A steel sheet production method includes: a hot rolling process in which a steel slab is heated, rolled, cooled, and coiled to obtain a hot-rolled sheet; a cold rolling process in which the hot-rolled sheet is cold rolled to obtain a cold-rolled sheet; and an annealing process in which the cold-rolled sheet is annealed to obtain a steel sheet. In the annealing process, the cold-rolled sheet is subjected to: heating at 1 to 7° C./sec from 600° C. to an annealing temperature; annealing from (AC1 point+50° C.) to (AC3 point+20° C.) for 1 10 to 35 sec; cooling at 10 to 50° C./sec from the annealing temperature to a primary cooling stop temperature of 450 to 600° C.; and cooling for 20 to 100 sec from the primary cooling stop temperature to a temperature of 400 to 500° C.
This manufacturing condition determination method comprises: a defect prediction step for predicting the presence/absence of a defect for each prescribed range by inputting manufacturing conditions for each prescribed range to a defect prediction model; a characteristic prediction step for predicting characteristics for each prescribed range by inputting the manufacturing conditions for each prescribed range to a characteristic prediction model; and a manufacturing condition determination step for extracting manufacturing conditions predicted to have no defect by the defect prediction model from among the plurality of manufacturing conditions inputted to the defect prediction model and the characteristic prediction model, and determining, as a manufacturing condition for a metal material, a manufacturing condition in which the characteristics predicted by the characteristic prediction model are maximum or minimum, from among the extracted manufacturing conditions.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
Provided is a stainless steel having excellent oxidation resistance, Cr poisoning resistance, and electric conductivity, not only in use environments for solid oxide fuel cells (SOFCs) but also in use environments for solid oxide electrolysis cells (SOECs). In the present invention, the composition of components is appropriately controlled, and, in particular, is set to contain 0.05-0.40 mass% Si, 1.01-3.00 mass% Mn, 10.0-22.0 mass% Cr, 0.10-1.10 mass% Al, and 0.20-0.45 mass% Nb, and to satisfy the relationships of formulae (1), (2), and (3). Formula (1): [Mn] + 0.50 × [Cr] ≥ 7.00. Formula (2): [Mn] +1.67 × [Al] ≤ 4.34. Formula (3): [Si] + 0.33 × [Al] ≤ 0.67.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
C25B 9/23 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
surface1/4surface1/4surface1/4surface1/41/4) in the part at 1/4 the sheet thickness is 0.80 or more; the amount of diffusible hydrogen in the steel is less than 0.75 mass ppm; and the surface of the steel sheet has a galvanization layer.
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
C23C 2/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
C23C 2/06 - Zinc or cadmium or alloys based thereon
5.
METHOD FOR MANUFACTURING CURED BODY, AND CURED BODY
Provided is a transformer iron core having an exceptional effect for improving a building factor. This transformer iron core is obtained using a grain-oriented electromagnetic steel sheet, wherein the grain-oriented electromagnetic steel sheet is configured to have a difference Δλp−p(−) of 3.0 ppm or less between the magnetorestriction amplitude λp−p(B−) when compressive stress of 0.3 kgf/mm2is applied in a steel sheet rolling direction and the magnetorestriction amplitude λp−p(A−) when compressive stress of 0.3 kgf/mm2 is applied in the steel sheet rolling direction under an Ar atmosphere after strain-relief annealing is implemented for 3 hours at 800°C.
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
Provided is a grain-oriented electrical steel sheet production method with which it is possible to produce a grain-oriented electrical steel sheet having better magnetic properties than conventional products in a component system in which an inhibitor is not actively used. This grain-oriented electrical steel sheet production method involves subjecting a steel slab to hot rolling, hot-rolled sheet annealing, cold rolling, primary recrystallization annealing, and secondary recrystallization annealing. In the final pass of the rough rolling in the hot rolling, the rolling temperature is set to 950-1150°C, and the reduction ratio is set to 25% or higher. In a temperature raising process in the hot-rolled sheet annealing, the average temperature increase rate when heating a hot-rolled steel sheet from 50°C to 350°C is set to 40°C/s or more.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
Provided is a bulging amount measurement device capable of measuring the bulging amount of a cast slab in a non-contact manner even in an environment in which a large amount of steam is generated at a high temperature. The present invention pertains to a bulging amount measurement device for measuring the bulging amount of a cast slab cast by a continuous casting machine, the bulging amount measurement device comprising: a two-dimensional laser distance meter that is provided on both sides in a long side direction and/or a short side direction of a cast slab in which solidification has been completed, and measures the distance to the cast slab from a plurality of positions in the short side direction and/or the long side direction; and a calculation device that calculates the bulging amount on a short side and/or a long side of the cast slab by using the distance measured by the two-dimensional laser distance meter. The two-dimensional laser distance meter emits blue laser light having a wavelength of 360-480 nm onto the cast slab.
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
C21D 1/74 - Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
A method for recovering a valuable element, by which method not only a valuable element but also lithium can be recovered; wherein, an oxide is reduced by adding a reductant and a flux containing CaO and SiO2 are added to the oxide, followed by heating, the oxide containing: at least one element selected from the group consisting of nickel and cobalt; and lithium. A mass ratio between CaO and SiO2 (CaO/SiO2) contained in the flux is not more than 0.50.
A method for manufacturing a formed component includes: determining a stress margin with a strain amount as a variable based on results of a test including placing a metal sheet in a predetermined hydrogen entry environment in a state where a load stress is loaded to a sheared surface of the metal sheet and the metal sheet is restrained; performing forming analysis of forming the metal sheet into the formed component and determining a residual stress and the amount of strain in a sheared end surface of the formed component; determining a load stress to be loaded to the sheared end surface by assembling the formed component to another component; and assessing a margin of the delayed fracture in the formed component based on the stress margin corresponding to the determined amount of strain and a total stress of the determined residual stress and the determined load stress.
22 in a gas component on the basis of the distribution state of the gas component, calculating the radial distribution of the direct reduction rate during operation by applying the radial distribution of the ratio of the number of moles of oxygen and iron and the radial distribution of the ratio of the number of moles of oxygen and carbon to a list model, and evaluating whether there is an excess or deficit in the quantity of supplied heat in the radial direction using the calculated radial distribution of the direct reduction rate.
A continuous casting method for steel and a continuous casting machine for steel are disclosed. A continuous casting method for steel includes: applying rolling reduction to a cast piece to be continuously cast at a rolling reduction rate of 0.3 mm/min or more and 2.0 mm/min or less in a range where a center solid phase ratio being a solid phase ratio in a thickness center of the cast piece is at least 0.2 or more and less than 1.0, in which a segment deflection T being a deflection in the thickness direction of a segment frame of the segment (18) where the rolling reduction is applied to the cast piece satisfies Equation (1).
A continuous casting method for steel and a continuous casting machine for steel are disclosed. A continuous casting method for steel includes: applying rolling reduction to a cast piece to be continuously cast at a rolling reduction rate of 0.3 mm/min or more and 2.0 mm/min or less in a range where a center solid phase ratio being a solid phase ratio in a thickness center of the cast piece is at least 0.2 or more and less than 1.0, in which a segment deflection T being a deflection in the thickness direction of a segment frame of the segment (18) where the rolling reduction is applied to the cast piece satisfies Equation (1).
2×τ−A/(n−1)≤3.25×2×δ≤1.3 (1)
Provided are: a grain-oriented electrical steel sheet with an etching resist coating film, comprising an etching resist coating film excellent in resist characteristics and peelability; and a method for producing a grain-oriented electrical steel sheet using the etching resist coating film. The grain-oriented electrical steel sheet with an etching resist coating film according to the present invention has a grain-oriented electrical steel sheet, an etching resist coating film formed on at least one surface of the grain-oriented electrical steel sheet, a plurality of non-coated regions not coated with the etching resist coating film provided linearly along a direction intersecting a rolling direction of the grain-oriented electrical steel sheet, and a groove formed on a surface of the grain-oriented electrical steel sheet in the non-coated regions, wherein the surface insulation resistance of the etching resist coating film is 20 Ω·cm2 or more per sheet, and the pencil hardness of the etching resist coating film is H-8H.
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
B05D 7/14 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C23F 1/00 - Etching metallic material by chemical means
Provided are: a grain-oriented electrical steel sheet with an etching resist coating film, comprising an etching resist coating film excellent in laser removability, resist characteristics, and peelability; and a method for producing a grain-oriented electrical steel sheet using the etching resist coating film. The grain-oriented electrical steel sheet with an etching resist coating film according to the present invention has a grain-oriented electrical steel sheet, an etching resist coating film formed on at least one surface of the grain-oriented electrical steel sheet, a plurality of coating-film removal regions from which the etching resist coating film is removed linearly along a direction intersecting a rolling direction of the grain-oriented electrical steel sheet, and a groove formed on a surface of the grain-oriented electrical steel sheet in the coating-film removal regions, wherein the surface emissivity of the etching resist coating film is 0.40 or more, the thermal conductivity of the grain-oriented electrical steel sheet with the etching resist coating film is 15 W/(m·K) or more, and the pencil hardness of the etching resist coating film is H-8H.
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
B05D 7/14 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C23F 1/00 - Etching metallic material by chemical means
The present invention provides a joined body which can be easily manufactured at a low cost by joining stainless steel through atmospheric brazing, and which has excellent corrosion resistance. The Sn content of a joined part is 40 mass% or more, and the deepest point of a surface Cr-concentrated layer of a heated region in a base material is 300 nm or less.
Proposed is a heat recovery technique that manifests an energy-saving effect to the greatest extent possible. Provided is a device comprising: a drainage path through which flows post-cleaning wastewater that has been used in cleaning treatment of a material having increased temperature; a replenishment water path through which flows replenishment water for the cleaning treatment; a first circulation path through which a first heating medium circulates; a first heat exchanger that is provided to the drainage path and the replenishment water path, the first heat exchanger performing heat exchange between the wastewater and the replenishment water; a second heat exchanger that is provided downstream of the first heat exchanger in the drainage path, the second heat exchanger performing heat exchange between the wastewater and the first heating medium; a heat pump of which the low-temperature side is connected to the first circulation path and the high-temperature side is connected downstream of the first heat exchanger in the replenishment water path; and a control unit that controls the first heat exchanger so that the coefficient of performance of the first heat exchanger and the heat pump improves when the replenishment water that has been increased in temperature via the first heat exchanger is furthermore increased in temperature due to heat from the wastewater recovered in the first heating medium and electric power supplied to a compressor and an evaporator of the heat pump.
The present invention provides: a steel sheet which has excellent ammonia stress corrosion cracking resistance, excellent low-temperature toughness, small change in mechanical characteristics due to PWHT treatment, and high strength; and a method for producing the same. The steel sheet contains specific amounts of C, Si, Mn, P, Al, Ti, Mo, Nb, Ca, N, and O by mass%, and satisfies 0.05 ≤ 2 × Cr + Mo + V + W ≤ 0.60, with the balance being made up or Fe and inevitable impurities. The steel sheet has a steel structure that is composed of ferrite and a hard structure other than the ferrite at the position of 1/4 the sheet thickness from the surface of the steel sheet. The hard structure has bainite, the volume fraction of ferrite is 40% or more and 90% or less, the average crystal grain size of ferrite is 2.0 μm or more and 10.0 μm or less, the volume fraction of bainite is 10% or more and 50% or less, the average hardness of the hard structure is 200 HV 0.01 or more and 350 HV 0.01 or less, and 60% or more of the hard structure by volume fraction is adjacent to the ferrite without being adjacent to the hard structure.
22 corrosion resistance, and excellent hydrogen embrittlement resistance; and a method for producing same. This stainless-steel seamless pipe: has a constituent composition that contains, in terms of mass%, 0.05% or less of C, 1.0% or less of Si, 0.01-1.0% of Mn, 0.05% or less of P, 0.005% or less of S, 12.0-14.0% of Cr, more than 3.0% and not more than 7.0% of Ni, more than 0.5% and not more than 3.0% of Mo, 0.10% or less of Al, 0.10% or less of N and 0.010% or less of O, with the remainder comprising Fe and unavoidable impurities; has a structure which contains, in terms of volume ratio, 70% or more of a martensite phase, 20% or less of a retained austenite phase and 10% or less of a ferrite phase and in which the average grain size of prior austenite is 50 μm or less and the maximum grain size of prior austenite is 100 μm or less; and has a yield strength of 655 MPa or more.
B21B 17/08 - Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions
C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
21.
STAINLESS STEEL SEAMLESS PIPE AND METHOD FOR PRODUCING SAME
22 corrosion resistance, and excellent hydrogen embrittlement resistance; and a method for producing the same. The present invention specifically provides a stainless steel seamless pipe which has a component composition that contains, in mass%, 0.05% or less of C, 1.0% or less of Si, 0.01-1.0% of Mn, 0.05% or less of P, 0.005% or less of S, more than 16.0% but not more than 18.0% of Cr, 2.5-6.0% of Ni, 1.0-4.0% of Mo, 0.10% or less of Al, 0.10% or less of N, and 0.010% or less of O, with the balance being made up of Fe and inevitable impurities, and has a structure in which, in terms of volume percentages, the martensite phase is 40% or more, the retained austenite phase is 25% or less, and the ferrite phase is 45% or less, the average prior austenite grain size is 50 µm or less, and the maximum prior austenite grain size is 100 µm or less. This stainless steel seamless pipe has a yield strength of 758 MPa or more.
B21B 17/08 - Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions
C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
22.
ETCHING RESIST FILM-BEARING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
Provided are: a method for producing a grain-oriented electromagnetic steel sheet that has an etching resist film that exhibits an excellent laser removability, resist characteristics, and peelability; and an etching resist film-bearing grain-oriented electromagnetic steel sheet that uses said etching resist film. The method for producing a grain-oriented electromagnetic steel sheet according to the present invention further comprises: a step for applying an etching resist film-forming coating agent to a surface of a prescribed steel sheet, this being a selection from the group consisting of hot-rolled steel sheet, hot-rolled annealed steel sheet, cold-rolled steel sheet, primary recrystallization-annealed steel sheet, and secondary recrystallization-annealed steel sheet; a subsequent step for subjecting the prescribed steel sheet to a baking treatment and baking the etching resist film-forming coating agent to form an etching resist film; a subsequent step for irradiating the surface of the etching resist film with a laser to form a plurality of film-removed regions linearly along a direction that intersects the rolling direction of the prescribed steel sheet; and a subsequent step for subjecting the prescribed steel sheet to an etching treatment to form a groove in the surface of the prescribed steel sheet in the film-removed regions. The emissivity of the surface of the etching resist film is at least 0.40; the thermal conductivity of the etching resist film-bearing grain-oriented electromagnetic steel sheet is at least 15 W/(m·K); and the pencil hardness of the etching resist film at least H and not more than 8H.
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
Provided is a coating agent for forming an etching resist coating film, with which it is possible to form an etching resist coating film that is excellent in terms of laser removability, resist characteristics, and separability. A coating agent for forming an etching resist coating film according to the present invention contains, in a solvent, 100 parts by mass of an aqueous alkyd resin, 0.10 part by mass or more and 30 parts by mass or less of a melamine resin, 20 parts by mass or more and 200 parts by mass or less of an aluminum-containing oxide, 10 parts by mass or more and 100 parts by mass or less of a titanium-containing oxide, and 0.10 part by mass or more and 5.0 parts by mass or less of carbon black in terms of solid content, and the total amount of the respective solid contents of these components accounts for 80 mass% or more of the total solid content.
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
The present invention makes it possible to evaluate buckling of a panel component before assembly to another component through simple molding analysis. Provided is a method for evaluating buckling in which buckling prior to assembly of a panel component obtained by press molding a plate material into a three-dimensional form is evaluated through molding analysis using a computer. This method for evaluating buckling comprises: a press molding analysis step (20A) for performing press-molding analysis in which the plate material is formed into the panel component, and acquiring the panel shape after mold release as a reference panel shape (10); a self-weight analysis step (20B) for performing self-weight analysis with respect to the reference panel shape (10) in a condition in which the panel component is placed on a flat surface, and acquiring the panel shape after deformation resulting from the weight of the panel component as an evaluation panel shape (11); and a buckling evaluation step (20C) for evaluating buckling of the panel component having the evaluation panel shape (11).
A motor vehicle body design method according to the present invention includes: an optimization analysis model generation step S1 for generating an optimization analysis model for performing optimization analysis on the optimal shape of a vibration control member; and an optimization analysis step S3 for performing optimization analysis for determining the optimal shape of a vibration control member model in the generated optimization analysis model. In the optimization analysis model generation step S1, a vibration control member model having a one-layer structure is generated. In the optimization analysis step S3, the density, thickness, and rigidity of the vibration control member model are set so that the vibration characteristics of a vehicle body component provided with the vibration control member model are equivalent to the vibration characteristics of the vehicle body component provided with the vibration control member having a two-layer structure.
G06F 30/20 - Design optimisation, verification or simulation
B62D 25/00 - Superstructure sub-unitsParts or details thereof not otherwise provided for
F16F 15/02 - Suppression of vibrations of non-rotating, e.g. reciprocating, systemsSuppression of vibrations of rotating systems by use of members not moving with the rotating system
G06F 30/15 - Vehicle, aircraft or watercraft design
26.
METHOD FOR REFINING MOLTEN STEEL AND METHOD FOR PRODUCING STEEL
The present invention provides a method with which it is possible to perform a desulfurization treatment of molten steel without causing desulfurization failure by estimating the S concentration in the molten steel with high accuracy. Provided is a method for refining molten steel that is contained in a ladle, the method comprising: inputting, to a mathematical model, refining conditions that include component concentrations of the molten steel, component concentrations of the slag, and the molten steel temperature before the start of the refining treatment or at an arbitrary point in time during the refining treatment; estimating the concentrations of two or more molten steel components including S during the refining treatment; and determining the subsequent refining treatment conditions on the basis of the estimated component concentrations of the molten steel and the target component concentrations in the refining treatment.
Proposed is a method for producing a grain-oriented electromagnetic steel sheet, with which it is possible to further improve magnetic properties and suppress fluctuations in magnetic properties and film properties in a coil without using an inhibitor. This method for producing a grain-oriented electromagnetic steel sheet includes: a hot rolling step for hot rolling a steel roll material having a constituent composition which contains C, Si, Mn, acid-soluble Al, N and Sb and in which S and Se are contained so as to satisfy a prescribed relational expression; an optional hot-rolled sheet annealing step; a cold rolling step; an acid washing step; a primary recrystallization annealing step; and a finish annealing step. In intermediate annealing in the hot-rolled sheet annealing step or cold rolling step before a final cold rolled steel sheet is obtained, the γ-phase fraction in the steel structure at the annealing temperature is 1.0-25.0 vol%, the average cooling speed after annealing is 20-50ºC/s, acid washing is carried out using a solution which contains 2-15 mass% of Fe ions and has an acid concentration of 1-20 mass% in the acid washing step, and an annealing separating agent contains a Ti compound at a quantity of 0.3-8 parts by mass in terms of Ti relative to 100 parts by mass of magnesia in the finish annealing step.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
H01F 1/147 - Alloys characterised by their composition
28.
METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET
The present invention provides a method for producing a grain-oriented electrical steel sheet, in which an AlN-based inhibitor is used, and with which it is possible to achieve further improvement of magnetic characteristics and stable production. The present invention specifically provides a method for producing a grain-oriented electrical steel sheet, which includes: a hot rolling step for hot-rolling a steel material that has a component composition which contains C, Si, Mn, sol. Al, and N and at least one of S and Se; a hot-rolled sheet annealing step; a cold rolling step; a primary recrystallization annealing step; and a finish annealing step. In the hot-rolled sheet annealing step, when Ct is defined as the coil winding temperature after hot rolling and when the temperature rising process of the hot-rolled sheet annealing is divided into three temperature zones that are a zone from normal temperature to a temperature T1, a zone from the temperature T1 to a temperature T2 °C, and a zone from the temperature T2 to the highest temperature of the hot-rolled sheet annealing, and t1, t2, and t3 are defined as the respective temperature rising rates of the three temperature zones, the following formula (1) and formula (2) are satisfied. (1): t1 > t2 > t3 and t1 ≥ 5 × t3, (2): T1 ≤ Ct ≤ T2 and T2 ≥ T1 + 150
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
22 corrosion resistance, and excellent hydrogen embrittlement resistance; and a method for producing the same. This stainless steel seamless pipe has a component composition that contains, in mass%, 0.10-0.30% of C, 1.0% or less of Si, 0.01-1.0% of Mn, 0.05% or less of P, 0.005% or less of S, 12.0-14.0% of Cr, 0.10% or less of Al, 0.10% or less of N, and 0.010% or less of O, with the balance being made up of Fe and inevitable impurities, and has a structure in which, in terms of volume percentages, the martensite phase is 70% or more, the retained austenite phase is 20% or less, and the ferrite phase is 10% or less, the average prior austenite grain size is 50 µm or less, and the maximum prior austenite grain size is 100 µm or less. This stainless steel seamless pipe has a yield strength of 552 MPa or more.
B21B 17/08 - Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions
C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
C22C 38/18 - Ferrous alloys, e.g. steel alloys containing chromium
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
30.
STAINLESS STEEL SEAMLESS PIPE AND METHOD FOR PRODUCING SAME
22 corrosion resistance, and excellent hydrogen embrittlement resistance; and a method for producing same. This stainless-steel seamless pipe: has a constituent composition that contains, in terms of mass%, 0.05% or less of C, 1.0% or less of Si, 0.01-1.0% of Mn, 0.05% or less of P, 0.005% or less of S, more than 14.0% but no more than 16.0% of Cr, 5.0- 8.0% of Ni, 0.5-3.5% of Mo, 0.10% or less of Al, 0.10% or less of N and 0.010% or less of O, with the remainder comprising Fe and unavoidable impurities; has a structure which contains, in terms of volume ratio, 50% or more of a martensite phase, 40% or less of a retained austenite phase and 10% or less of a ferrite phase and in which the average grain size of prior austenite is 50 μm or less and the maximum grain size of prior austenite is 100 μm or less; and has a yield strength of 758 MPa or more.
B21B 17/08 - Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions
C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
31.
OPERATION DEVICE FOR BLAST FURNACE AND OPERATION METHOD FOR BLAST FURNACE
Provided is an operation device that makes it possible to determine the restoration of the flow rate of blowing air in a wind reduction state of a blast furnace. An operation device 1 is used for operation of a blast furnace 100, the operation device comprising a control unit 30. The control unit 30 executes a determination process using a determination index that includes at least an evaluation index for ventilation abnormality when a wind reduction state is attained upon detection of the ventilation abnormality in the blast furnace 100, and decides to perform a wind increase operation when the control unit 30 determines in the determination process that a predetermined condition is satisfied.
The present invention provides: a method for producing a grain-oriented electrical steel sheet having an etching resist coating film that is excellent in terms of resist characteristics and separability; and a grain-oriented electrical steel sheet with an etching resist coating film, which uses the above-described etching resist coating film. A method for producing a grain-oriented electrical steel sheet according to the present invention comprises: a step for applying a coating agent for forming an etching resist coating film to the surface of a specific steel sheet which is one selected from the group consisting of a hot-rolled steel sheet, a hot-rolled sheet annealed steel sheet, a cold-rolled steel sheet, a primary recrystallization annealed steel sheet, and a secondary recrystallization annealed steel sheet in such a manner that a plurality of non-coated regions, in which the coating agent for forming an etching resist coating film is not applied, are left linearly along a direction that intersects with the rolling direction of the specific steel sheet; a step for subsequently subjecting the specific steel sheet to a baking treatment so as to bake the coating agent for forming an etching resist coating film, thereby forming an etching resist coating film; and a step for subsequently subjecting the specific steel sheet to an etching treatment so as to form a groove in the surface of the specific steel sheet in each of the non-coated regions. The surface insulation resistance coefficient of the etching resist coating film is 20 Ω∙cm2/sheet or more, and the pencil hardness of the etching resist coating film is H or more and 8H or less.
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
Provided is a coating agent for forming an etching resist coating film that is capable of forming an etching resist coating film which has excellent resist characteristics and separability. A coating agent for forming an etching resist coating film according to the present invention contains, in a solvent, 100 parts by mass of an aqueous alkyd resin, 0.10 parts by mass to 30 parts by mass of a melamine resin, and 5.0 parts by mass to 100 parts by mass of an extender pigment in terms of solid content, and the total amount of the respective solid contents of the aqueous alkyd resin, the melamine resin, and the extender pigment accounts for 80 mass% or more of the total solid content.
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
34.
COATING AGENT FOR FORMING ETCHING RESIST COATING FILM
Provided is a coating agent for forming an etching resist coating film that is capable of forming an etching resist coating film which has excellent laser removability, resist characteristics, and separability. A coating agent for forming an etching resist coating film according to the present invention contains, in a solvent, 100 parts by mass of an aqueous alkyd resin, 0.10 parts by mass to 30 parts by mass of a melamine resin, 50 parts by mass to 200 parts by mass of an aluminum-containing oxide, 30 parts by mass to 100 parts by mass of a titanium-containing oxide, and 0.10 parts by mass to 5.0 parts by mass of carbon black in terms of solid content, and the total amount of the respective solid contents of said components accounts for 80 mass% or more of the total solid content.
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
35.
DATA SET GENERATION METHOD, ELECTROMAGNETIC FIELD ANALYSIS METHOD AND A NON-TRANSITORY COMPUTER READABLE MEDIUM
A data set generation method is a method of acquiring two-dimensional magnetic properties and includes measuring a first magnetic field strength vector generated in an analysis target in response to first elliptical magnetization applied clockwise, measuring a second magnetic field strength vector generated in the analysis target in response to second elliptical magnetization applied counterclockwise, calculating a first average magnetic field strength vector by averaging the first magnetic field strength vector and the second magnetic field strength vector, calculating a first average magnetic flux density vector by averaging a first magnetic flux density vector corresponding to the first elliptical magnetization and a second magnetic flux density vector corresponding to the second elliptical magnetization, and generating a data set of the two-dimensional magnetic properties that associates the first average magnetic field strength vector and the first average magnetic flux density vector.
Provided is a coated steel sheet having excellent press formability. The coated steel sheet includes a base steel sheet and, on at least one side of the base steel sheet, a film containing organic resin and wax. The organic resin is at least one selected from the group consisting of acrylic resins, epoxy resins, urethane resins, phenolic resins, vinyl acetate resins, and polyester resins. The wax is polyolefin wax having a melting point that is 100° C. or more and 145° C. or less and an average particle size that is 3.0 μm or less. The film has a specified distribution of the wax. coating weight of the film per side is 0.3 g/m2 or more.
DECARBURIZATION ANNEALED SHEET FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H01F 1/147 - Alloys characterised by their composition
38.
METAL PLATE MOLDING LIMIT DETERMINATION METHOD, METAL PLATE MOLDING LIMIT DETERMINATION SYSTEM, AND METAL PLATE MOLDING LIMIT DETERMINATION PROGRAM
In a metal plate molding limit determination method according to the present invention: a surface of a test piece 101 is molded while being sequentially images, and a strain on the surface of the test piece 101, which is generated from the start of molding to a point at which fracture occurs, as well as three-dimensional coordinates of the surface of the test piece 101, are measured to construct a database (S10); an evaluation point string is set along a fracture orthogonal direction that is orthogonal to a fractured section 103 generated in the test piece 101, and strain or three-dimensional coordinates in the evaluation point string are extracted from the database (S20); and a fracture orthogonal direction gradient of the strain or the three-dimensional coordinates in the evaluation point string is calculated, and a molding limit is determined (S30).
Provided is a ferritic stainless steel sheet excellent in brazability when performing brazing heat treatment at high temperature and press formability, and excellent in corrosion resistance after the brazing heat treatment. This ferritic stainless steel sheet has a component composition of, in mass%, C: 0.003-0.030%, Si: 0.01-1.30%, Mn: 0.05-0.30%, P: 0.050% or less, S: 0.020% or less, Cr: 24.0-28.0%, Ni: 1.60-2.50%, Mo: 1.50-3.00%, Al: 0.001-0.150%, Ti: 0.01-0.35%, and N: 0.030% or less, with the balance being Fe and unavoidable impurities, and has an average r value of 1.2 or more.
The present invention obtains a smooth finished surface by suppressing the occurrence of finished surface defects when grinding the surface of a material to be ground. This grinding method for grinding a surface of a grinding material comprises a first grinding step for grinding a surface of the material to be ground along a first direction of the surface of the material to be ground, and a second grinding step for grinding the surface of the material to be ground along a second direction crossing the first direction after the first grinding step.
B24B 47/20 - Drives or gearings for grinding machines or devicesEquipment therefor relating to feed movement
B24B 49/02 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
A manufacturing method of a press formed part, the press formed part including at least a main body portion, which has a top plate portion and vertical wall portions formed via ridge portions, and an outward flange portion formed continuously with the top plate portion, the ridge portions, and the vertical wall portions at an end portion of the main body portion, the method includes: an intermediate forming step of forming an intermediate formed part having the top plate portion and the vertical wall portions formed via the ridge portions, and including a step-shaped portion bulging outward at a root portion of an outward flange corresponding portion which is to be formed into the outward flange portion; and a target shape forming step of forming the outward flange portion by bending and raising the outward flange corresponding portion of the intermediate formed part outward, and acquiring a target shape.
This dressing method is for a grinding member (4) including abrasive grains and a binder for binding the abrasive grains, and comprises a dressing step of causing the grinding member (4) and a dressing member (5) to collide with each other. In the dressing step, the dressing method may cause the grinding member to collide with the dressing member (5) having a hardness higher than that of the grinding member (4) based on the bonding degree of the abrasive grains by the binder.
The present invention extends the lifetime of a grinding member when grinding the surface of a material to be ground. This grinding method for grinding a surface of a material to be ground by using a grinding member extending in a direction in which a rotation axis is inclined with respect to a surface of the material to be ground comprises: a pull-grinding step of grinding the surface of the material to be ground by moving the grinding member in a feeding direction in a state where a rear end side in the feeding direction of the grinding member is in contact with the surface of the material to be ground while rotating the grinding member; and a push-grinding step of grinding the surface of the material to be ground by moving the grinding member in the feeding direction in a state where a front end side in the feeding direction of the grinding member is in contact with the surface of the material to be ground while rotating the grinding member.
The present invention provides a galvanized steel sheet which combines high strength, excellent ductility, and excellent delayed fracture resistance. A base steel sheet is given a prescribed composition, steel structure, and diffusible hydrogen content. Specifically, M1/Mt is restricted to 0.30 or less in the steel structure of the base steel sheet, and the diffusible hydrogen content in the base steel plate is reduced to 0.50 mass ppm or less.
Provided is a mixed powder demonstrating both excellent extractability and compressibility at the time of molding. This mixed powder includes an iron-based soft magnetic powder, an insulating layer formed on a surface of particles forming the iron-based soft magnetic powder, and a lubricant. The lubricant contains an organic lubricant and an inorganic layered compound.
The present invention suggests a gas separation facility capable of performing gas separation processing that does not increase loss in power or pressure of a vacuum pump and that does not involve a cleaning step. The present invention comprises: two or more adsorbent filling layers 21a, 21b which are disposed in series in a flowing direction of a raw material gas; adsorption columns 22a, 22b which respectively accommodate the adsorbent filling layers 21a, 21b in a separated manner; desorbed gas discharge lines 15 which discharge, as desorbed gases, gas components desorbed from an adsorbent and which are provided to the respective adsorbent filling layers 21a, 21b at raw material gas supply sides and/or discharge sides of the adsorbent filling layers 21a, 21b; open/close valves V1, V2 which are provided to the desorbed gas discharge lines; a vacuum pump VP which is connected to the desorbed gas discharge lines 15 and which sucks the gases from the adsorption columns 22a, 22b; a desorbed gas recovery line 17 which is connected to the downstream side of the vacuum pump VP and which branches into a plurality of gas recovery lines 17a, 17b; and open/close valves V4, V5 which are provided to the gas recovery lines 17a, 17b.
B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
The purpose of the present invention is to provide: a hot-rolled steel sheet which serves as a starting material of a steel sheet for a can having high strength, high ductility and a high r value; and a method for producing the same. Disclosed is a hot-rolled steel sheet which has a specific component composition and a ferrite-based structure that contains ferrite in an area ratio of 70% or more, wherein: the average crystal grain size of the ferrite is 15 µm or less in terms of equivalent circle diameter; and the amount of N that is present in the form of a nitride and the total amount of N satisfy formula (1). (1): (Amount of N that is present in form of nitride)/(Total amount of N) ≤ 0.40 The total amount of N is the amount of all N included in the hot-rolled steel sheet.
The present invention provides a steel sheet having high strength and high ductility, and a method for manufacturing the same. The steel sheet has a specific component composition and a structure mainly composed of ferrite. The amount of N present as AlN and the total amount of N satisfy relational expression (1), and the amount of Nb present as Nb precipitates and the total amount of Nb satisfy relational expression (2). The yield strength is 500 MPa or greater, the HR30T hardness is 66 or greater, and the total elongation is 7.0% or more. (1): (Amount of N present as AlN)/(total amount of N) ≤ 0.40 The total amount of N is the amount of all N included in the steel sheet. (2): 0.10 ≤ (amount of Nb present as Nb precipitates)/(total amount of Nb) ≤ 0.80 The total amount of Nb is the amount of all Nb included in the steel sheet.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
49.
ABNORMAL-VIBRATION-PREDICTING METHOD FOR ROLL GRINDER, ROLLING-ROLL-GRINDING METHOD, METAL-STRIP-ROLLING METHOD, ABNORMAL-VIBRATION-PREDICTING DEVICE FOR ROLL GRINDER, AND ROLL-GRINDING APPARATUS
An abnormal-vibration-predicting method for a roll grinder that grinds an outer peripheral surface of a rolling roll with a grinding wheel while the rolling roll rotates includes an acquisition step and a prediction step. The acquisition step acquires a rigidity parameter related to a rigidity of the roll grinder and a wheel rotation parameter related to a rotational speed of the grinding wheel. The prediction step predicts an occurrence of an abnormal vibration in a process of grinding the rolling roll by using the rigidity parameter and the wheel rotation parameter.
B24B 55/00 - Safety devices for grinding or polishing machinesAccessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Proposed is a method for producing reduced iron briquettes, wherein apparent density and strength can be improved even when low grade ore is used in briquetting by hot forming reduced iron. In a method for producing reduced iron briquettes according to the present invention, a reduced iron group composed of reduced iron containing iron components is subjected to hot compression molding to form briquettes, wherein a mixture in which low-grade reduced iron obtained by reducing low-grade ore and high-grade reduced iron obtained by reducing high-grade ore are mixed at a volumetric ratio determined according to the target apparent density of the reduced iron briquettes is used as the reduced iron group.
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION (Japan)
Inventor
Tomozawa Masanari
Ishihara Tatsumi
Abstract
Provided is a powder that has a high reaction efficiency and can maintain said reaction efficiency even after repeated oxidation-reduction reactions. A powder according to the present invention includes iron oxide particles and a coating layer that coats the surface of the iron oxide particles. The coating layer comprises an oxide that includes Cr. The average thickness of the coating layer is no more than 50 nm. The average coverage of the coating layer is at least 50%. The coating layer comprises a Cr diffusion layer that has a gradient composition that has a Cr/Fe concentration ratio that decreases in the thickness direction from the surface side of the coating layer. When d is the thickness of the coating layer, the average gradient in the thickness direction of the Cr/Fe concentration ratio at a thickness of 3d/4 from the surface of the coating layer is at least 0.01/nm but no more than 0.20/nm.
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION (Japan)
Inventor
Tomozawa Masanari
Ishihara Tatsumi
Abstract
Provided is a powder which has a high reaction efficiency and which, even when repeatedly undergoing oxidation/reduction reactions, can retain the reaction efficiency. The powder comprises iron oxide particles and oxide particles, wherein the oxide particles include an oxide of Cr and/or Si and the oxide particles have an average particle diameter of 0.5-100 nm. The oxide particles have a ratio of the maximum Feret diameter Fmax to the minimum Feret diameter Fmin, Fmax/Fmin, of 2.0 or greater on average. The oxide particles are in contact with the iron oxide particles at an average degree of contact with the iron oxide particles of 20-80%.
The purpose of the present invention is to provide: a zinc-plated steel sheet and a member that are excellent in tensile characteristics and collision characteristics; and a method for manufacturing the zinc-plated steel sheet and the member. The zinc-plated steel sheet comprises a steel sheet having a prescribed steel structure, and a zinc plating layer on a surface of the steel sheet, wherein: after the zinc-plated steel sheet is subjected to U-bending for a bending radius of R=4 mm at a stroke speed of 1,500 mm/min, a spacer having a thickness of 5 mm is installed on the inner side (compression side) of the bent portion of the zinc-plated steel sheet; when the bent portion has been subjected to bending until the two surfaces of the steel sheet that are present at locations each facing toward an individual one of the upper and lower surfaces of the spacer in the thickness direction comes into close contact with the spacer, no cracks are produced on the outer side (tension side) of the bent portion; the tensile strength is at least 780 MPa and less than 1,180 MPa; and the yield ratio is 65-95%.
Provided is a coated steel sheet having excellent press formability. The coated steel sheet includes a base steel sheet and, on at least one side of the base steel sheet, a film containing organic resin and wax. The organic resin is at least one selected from the group consisting of acrylic resins, epoxy resins, urethane resins, phenolic resins, vinyl acetate resins, and polyester resins. The wax is polyolefin wax having a melting point that is 100° C. or more and 145° C. or less and an average particle size that is 3.0 μm or less. The proportion of the wax in the film is 5 mass % or more and 70 mass % or less. Coating weight variation σ′ is 0.300 or less. Coating weight μW of the film is 0.3 g/m2 or more.
C10M 107/24 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol, aldehydo, ketonic, ether, ketal or acetal radical
C10M 107/28 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
C10M 107/32 - Condensation polymers of aldehydes or ketonesPolyestersPolyethers
C10M 107/44 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
C10M 125/10 - Metal oxides, hydroxides, carbonates or bicarbonates
C10M 125/24 - Compounds containing phosphorus, arsenic or antimony
C10M 125/26 - Compounds containing silicon or boron, e.g. silica, sand
C10M 151/00 - Lubricating compositions characterised by the additive being a macromolecular compound containing sulfur, selenium or tellurium
C10M 161/00 - Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
C10N 50/02 - Form in which the lubricant is applied to the material being lubricated dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
57.
ENERGY OPERATION ASSISTANCE SYSTEM, INFORMATION PROCESSING DEVICE, INFORMATION OUTPUT DEVICE, ENERGY OPERATION DEVICE, ENERGY OPERATION ASSISTANCE METHOD, AND ENERGY OPERATION METHOD
This energy operation assistance system comprises an information acquisition unit. Constraint conditions for an optimization calculation include a power interchange amount constraint for which there is used a power interchange direction determination parameter that represents the direction in which electric power is sent and interchanged from one steel mill to another steel mill constituting a plurality of steel mills and is used for adjusting the upper limit of the power interchange amount between the steel mills. The objective function of the optimization calculation is an energy operation cost of the plurality of steel mills, the energy operation cost including a power interchange cost associated with interchange of power between the steel mills. The energy operation assistance system furthermore comprises: an output unit for outputting information calculated by an optimization unit; an output information acquisition unit for acquiring an operation condition for an energy facility of the plurality of steel mills; and an information output unit for outputting the operation condition for the energy facility of the plurality of steel mills.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
Provided is a technology for expanding PRPD-pattern teaching data in partial-discharge measurement. This partial-discharge analysis system carries out analyses of partial discharge incidents in electrical equipment, and is provided with a control unit and a partial-discharge detection sensor. The control unit generates a PRPD pattern on the basis of input signals obtained by the partial-discharge detection sensor, and inputs the PRPD pattern as a two-dimensional image into an analysis model for analysis, thereby diagnosing the presence of partial-discharge incidents. Teaching data utilized in the analysis model contains, as a base image pixel-displayed as a two-dimensional image, a PRPD pattern obtained from past partial discharges, and contains as teaching data an image in which the base image has been shifted up/down, has been stretched up/down, or has been composited with a noise image.
This impact test device for performing an impact test on an impact test object includes: an impact device for vibrating an impact test object by impacting the impact test object; a surface wave receiving device for measuring a surface wave signal generated on a surface of the impact test object by the vibration caused by being impacted by the impact device; and a calculation device for collecting data of the surface wave signal measured by the surface wave receiving device and calculating the collected data. The calculation device detects an abnormality of the impact device on the basis of an index of a normal state extracted from changes over time in the waveform of the surface wave signal measured by the surface wave receiving device.
Provided is a method for manufacturing an oriented electromagnetic steel sheet having excellent magnetic characteristics and capable of reducing the heating temperature of a steel slab to at most 1,300ºC. This method for manufacturing an oriented electromagnetic steel sheet comprises subjecting a steel slab to hot rolling, hot-rolled sheet annealing, cold rolling, primary recrystallization annealing, and secondary recrystallization annealing, wherein, in the hot-rolled sheet annealing, first-stage soaking holding in which the hot-rolled steel sheet is held at a soaking temperature of 350-1,000ºC for a soaking time of 3.5-120 s is performed at least once, and second-stage soaking holding in which the hot-rolled steel sheet is held at a soaking temperature of higher than 1,000ºC and at most 1,100ºC is performed.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
Cutting equipment for steel strips (1), the cutting equipment including: a cutting device (4) configured to laser cut a vicinity of a joint portion (2) in which a rear end of a preceding steel strip and a front end of a succeeding steel strip are joined that has been detected by a joint portion detection device (5), and a vicinity of a defective portion of the steel strips that has been detected by a defect detection device (8); and a control unit (9), wherein the control unit includes a plurality of modes, including a first cut mode that causes laser cutting in the vicinity of the joint portion, and a second cut mode that causes laser cutting in the vicinity of the defective portion, and the control unit operates the cutting device in accordance with one cut mode in the plurality of modes.
B21B 38/00 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
B21B 15/00 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B23K 26/38 - Removing material by boring or cutting
B23K 101/16 - Bands or sheets of indefinite length
62.
SURFACE-TREATED STEEL SHEET AND PRODUCTION METHOD THEREFOR
Provided is a surface-treated steel sheet that can be produced without using hexavalent chromium and has excellent corrosion resistance at BPA-free painted worked part. A surface-treated steel sheet comprises: a steel sheet; and a chromium-containing layer disposed on a surface of the steel sheet on at least one side, wherein when the chromium-containing layer is observed from a surface direction, linear regions in which an element smaller in atomic number than chromium is concentrated are present, and the number of the linear regions is 5.0 or more per 100 nm.
This pallet detection device is provided with: an optical detector that outputs point-cloud data that is represented by two-dimensional coordinates, comprising an X-axis extending along a pallet transporter widthwise and a Y-axis orthogonal to the X-axis and extending along the pallet transporter lengthwise, and that correspond to a detected object; and a processing circuit. The processing circuit is configured so as to, if determining that a detected object is a pair of legs of the pallet: compute a first virtual point on the basis of first point-cloud data corresponding to one of the pair of legs; compute a second virtual point on the basis of second point-cloud data corresponding to the other of the pair of legs; and compute, as a target point toward which the pallet transporter should head, a midpoint of a line segment connecting the first virtual point and the second virtual point.
G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
G01B 11/26 - Measuring arrangements characterised by the use of optical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of optical techniques for testing the alignment of axes
G05D 1/43 - Control of position or course in two dimensions
G05D 1/242 - Means based on the reflection of waves generated by the vehicle
64.
STATE ESTIMATION METHOD FOR VACUUM DEGASSING TREATMENT, OPERATION METHOD, MOLTEN STEEL PRODUCTION METHOD, AND STATE ESTIMATION DEVICE FOR VACUUM DEGASSING TREATMENT
Provided are a state estimation method for vacuum degassing treatment, etc. capable of highly accurate state estimation in vacuum degassing treatment. A state estimation method for vacuum degassing treatment includes: an input step (S1, S2) of receiving input of operation track records related to manipulated variables during vacuum degassing treatment and time-series exhaust gas measured values including a flow rate of exhaust gas discharged from a vacuum degassing line that performs the vacuum degassing treatment and component concentrations of CO gas, CO2 gas, and O2 gas contained in the exhaust gas, as input information; and a calculation step (S3) of, based on the input information, classifying sources of gases that constitute the exhaust gas into a plurality of sources including blown oxygen and air entering a vacuumized region in the vacuum degassing line before or during the treatment, and estimating a constituent ratio of the classified plurality of sources.
A control device (10) for a vacuum degassing line includes an operation information input unit (11) configured to receive information regarding a weight and concentrations of components of the molten steel before the decarburization processing, track records of operation when the decarburization processing is being executed, and information regarding auxiliary raw materials; a component calculation unit (12) configured to estimate an in-molten-steel carbon concentration in the molten steel; a correction calculation unit (13) configured to calculate correction parameters to correct an estimated value of carbon content discharged from the vacuum degassing line and the estimated in-molten-steel carbon concentration in the molten steel; and a decarburization processing control unit (14) configured to end the decarburization processing when the in-molten-steel carbon concentration in the molten steel that has been corrected by the correction parameter reaches a target value.
Provided is a stainless steel seamless pipe having high strength and excellent low-temperature toughness and corrosion resistance. The stainless steel seamless pipe comprises: a predetermined chemical composition; 30% or more martensite phase, 50% or less ferrite phase, and 40% or less retained austenite phase in volume fraction; a yield stress of 758 MPa or more; and a Charpy absorbed energy vE−10 at −10° C. of 40 J or more.
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C21D 1/18 - HardeningQuenching with or without subsequent tempering
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
C21D 9/14 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
This information processing device comprises a control unit. The control unit acquires information relating to defect positions obtained from a surface of a steel sheet before performing a prescribed step, and, on the basis of the information relating to the defect positions, creates a defect map indicating defect positions on each steel sheet in a step preceding or following the prescribed step, and/or creates an overlay map in which defect positions across a plurality of steel sheets in the step preceding or following the prescribed step are aggregated.
B21C 51/00 - Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
B21B 38/00 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
B21B 99/00 - Subject matter not provided for in other groups of this subclass
G01N 21/892 - Investigating the presence of flaws, defects or contamination in moving material, e.g. paper, textiles characterised by the flaw, defect or object feature examined
G01N 27/90 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
The present invention suppresses cracking from occurring in a corner part during press molding. A method for manufacturing a press-molded article according to the present invention comprises: a pre-molding step for press-molding a blank material into a pre-molded article 40; and a main molding step for molding the pre-molded article 40 into a press-molded article that is a target molded article. The manufacturing method is characterized in that when a linear section 11', which is one from among two linear sections 11', 12 of the pre-molded article 14 and is provided with an outer vertical wall section 43, is such that the end, from among both ends in an extension direction D3 of the linear section 11', closest to the other linear section 12 is defined as a proximal end P2, the end on the opposite side from the proximal end P2 is defined as a distal end P1, and an angle formed by an outer vertical wall section of the press-molded article and the outer vertical wall section 43 of the pre-molded article 40 is defined as an opening angle, press molding is carried out during the pre-molding step such that the opening angle at the proximal end P2 is larger than the opening angle at the distal end P1 and is an opening angle having a positive value.
Provided is a method capable of quantitatively evaluating delayed fracture characteristics of a sheared edge formed by a shearing process of a three-dimensional rear trim section. This method is a method for evaluating delayed fracture characteristics of a sheared edge of a metal sheet for press-molding. In the method for evaluating delayed fracture characteristics, a sheared edge for evaluating the delayed fracture characteristics is defined as one generated by press-molding a metal sheet into a component having a target component shape and then performing a shearing process on the metal sheet, the values of stress or strain at or around the sheared edge to be evaluated are obtained under two conditions: a pre-processing state of the metal sheet where the press-molded metal sheet is constrained by material constraints in the shearing process; and a post-processing state of the metal sheet where the shearing is completed by the shearing process and the constraints on the metal plate are lifted, and the delayed fracture characteristics are evaluated on the basis of the difference between the values of stress or strain obtained under the two conditions.
G06F 119/14 - Force analysis or force optimisation, e.g. static or dynamic forces
70.
METAL MATERIAL QUALITY PREDICTION MODEL GENERATION METHOD, METAL MATERIAL QUALITY PREDICTION METHOD, METAL MATERIAL QUALITY INFLUENCING FACTOR INFERENCE METHOD, METAL MATERIAL MANUFACTURING METHOD, QUALITY PREDICTION MODEL GENERATION METHOD, METAL MATERIAL QUALITY PREDICTION MODEL GENERATION DEVICE, METAL MATERIAL QUALITY PREDICTION DEVICE, AND METAL MATERIAL QUALITY INFLUENCING FACTOR INFERENCE DEVICE
This metal material quality prediction model generation method includes: a first collection step; a second collection step; a saving step in which, using the width of a prescribed range in one specific process among processes as a reference, manufacturing conditions and quality in the other processes are edited and the manufacturing conditions and quality are repeatedly saved in association with each of unified prescribed ranges that are prescribed ranges in which coarse or fine differences in the manufacturing conditions and the quality in the processes are compensated for and that correspond in number to the number of processes; a model generation step; and a model selection step.
B21B 38/00 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
B21B 37/00 - Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
B21B 99/00 - Subject matter not provided for in other groups of this subclass
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
71.
PROCESSING METHOD OF FILLER LAYER ACCOMODATED IN TUBULAR CONTAINER
In a blast furnace operation method according to the present invention, a blowing gas and a reducing material are blown from a tuyere. The reducing material contains a hydrocarbon-hydrogen mixed gas. The method includes: a step of preheating the hydrocarbon-hydrogen mixed gas to generate a high-temperature hydrocarbon-hydrogen mixed gas; and a step of blowing the high-temperature hydrocarbon-hydrogen mixed gas from the tuyere of the blast furnace. Blast furnace auxiliary equipment according to the present invention comprises: a preheating device that preheats the hydrocarbon-hydrogen mixed gas to generate high-temperature hydrocarbon-hydrogen mixed gas; and a blowing device that has a hydrocarbon-hydrogen mixed gas supply unit which introduces the high-temperature hydrocarbon-hydrogen mixed gas into the tuyere.
The present invention provides an iron-based mixed powder for powder metallurgy, which contains an iron-based powder and one or more binders that are selected from the group consisting of oleic acid amide, erucic acid amide, lauric acid amide, palmitic acid amide, stearic acid amide, behenic acid amide, and ethylene bis-oleic acid amide, have a melting point of 60°C to 120°C inclusive, and adhere to the surface of the iron-based powder, wherein the content of the binders with respect to the mass that is obtained by subtracting the mass of the binders from the total mass of the iron-based mixed powder for powder metallurgy is 0.01 mass% to 1.0 mass% inclusive. According to the present invention, the powder compact strength of an iron-based green compact that is obtained by pressure molding the iron-based mixed powder for powder metallurgy is increased, and damage to the iron-based green compact in green processing can be prevented. In addition, the energy consumption required for heating and mixing of an iron-based mixed powder for powder metallurgy can be reduced.
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
Provided is a blast furnace operation method with which it is possible to suppress gas blow-by near the furnace wall of shaft gas blown from the shaft of the blast furnace and disperse the shaft gas toward the center in the furnace. Provided is a blast furnace operation method in which coke and ore are alternately charged from the blast furnace top, coke layers and ore layers are alternately formed within the blast furnace, blast gas is blown from a tuyere provided in the lower part of the blast furnace, and shaft gas is blown from a blow-in pipe provided in the shaft of the blast furnace, wherein, when the amount of shaft gas blown in is taken as V1 (Nm3/t), the amount of bosh gas generated by blast gas blown in from the tuyere is taken as V2 (Nm3/t), the center position of the blast furnace is taken as 0.00, and the wall position of the blast furnace is taken as 1.00, the ratio of the ore layer thickness to the coke layer thickness charged when the normalized radius of the blast furnace is within the range of (V2/(V1+V2))0.5 to 1.00 is set to 0.7 times or more the ratio of the ore layer thickness to the coke layer thickness charged when the normalized radius is within the range of 0.00-1.00.
Provided is a steel continuous casting method that can identify the final solidification position accurately and inexpensively. A steel continuous casting method comprises: increasing a gap between the facing cast steel support rolls toward a downstream side in a casting direction of the cast steel, in a section; applying rolling reduction to the cast steel by a roll segment having a plurality of pairs of cast steel support rolls whose rolling reduction amounts are controlled by hydraulic cylinders, at least in a predetermined range; measuring a pressure difference between a plurality of hydraulic cylinders and estimating a final solidification position of the cast steel based on the pressure difference; and controlling a rolling reduction amount of the cast steel so as to satisfy predetermined formulas in a roll segment estimated to be the final solidification position and a roll segment immediately preceding the roll segment.
An automotive body joining position optimization analysis method includes: setting all or a part of an automotive body model as an analysis object model; generating an optimization analysis model by setting a candidate for weld line to the analysis object model; setting a variable amplitude load condition; setting the reciprocal of a predetermined target fatigue life as a target liner cumulative damage; setting improvement of the stiffness of the optimization analysis model, a reduction in the liner cumulative damage, which is the reciprocal of a fatigue life of the candidate for weld line, and minimization of the length of the candidate for weld line as optimization analysis conditions; performing optimization analysis by giving the variable amplitude load condition to the optimization analysis model, and determining the optimal arrangement of the weld line, which achieves the optimization analysis condition).
A battery case includes: a battery case lower having a rectangular shape, mounted below a floor of a vehicle body and configured to store a battery; and a battery case upper disposed to cover an upper surface of the battery case lower. The battery case lower includes: a case bottom portion; case front-rear side wall portions and case right-left side wall portions; and a case flange portion formed outward at upper ends of the case front-rear side wall portions and the case right-left side wall portions and joined to the battery case upper, and an inner surface and/or an outer surface of at least one of the case front-rear side wall portions, the case right-left side wall portions, and the case bottom portion is patched or coated with resin, and a reinforcing plate disposed to cover the resin is adhered to the resin.
H01M 50/242 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
B60K 1/04 - Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
H01M 50/231 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the material of the casings or racks having a layered structure
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/271 - Lids or covers for the racks or secondary casings
78.
QUALITY CHANGE FACTOR IDENTIFICATION METHOD, QUALITY CHANGE FACTOR IDENTIFICATION DEVICE, QUALITY CHANGE FACTOR IDENTIFICATION DEVICE SYSTEM, AND METAL MATERIAL MANUFACTURING METHOD
This quality change factor identification method executed by a computer comprises: a quality prediction step for predicting quality and outputting the quality as a quality prediction value; a quality prediction error calculation step for calculating the difference between a quality actual value and the quality prediction value as a quality prediction error; a variable selection step for selecting, on the basis of a first variable importance, manufacturing conditions having high contributions to the quality prediction error from among manufacturing conditions for respective groups; and a factor identification step for, on the basis of a second variable importance, identifying a manufacturing condition having a high contribution to the quality prediction error from among the selected manufacturing conditions as a factor of a quality change of a product.
METAL MATERIAL QUALITY PREDICTION MODEL GENERATION METHOD, METAL MATERIAL QUALITY PREDICTION METHOD, METAL MATERIAL MANUFACTURING METHOD, QUALITY PREDICTION MODEL GENERATION METHOD, DATA PROCESSING METHOD, METAL MATERIAL QUALITY PREDICTION MODEL GENERATION DEVICE, METAL MATERIAL QUALITY PREDICTION DEVICE, AND DATA PROCESSING DEVICE
A metal material quality prediction model generation method including a first collection step, a second collection step, a third collection step, a saving step, and a model generation step, wherein in the saving step, prescribed ranges for each work stage which correspond to prescribed ranges for a final work stage are specified on the basis of at least one ore more among longitudinal direction and width direction dimensions of a metal material that change in each work stage, and longitudinal direction and width direction cutting positions of the metal material, collected in the third collection step, and the manufacturing conditions of the metal material in the specified prescribed ranges for each work stage and the quality of the metal material in the final work stage are associated and saved per each specified range in the final work stage.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
80.
COLD ROLLING FACILITY, COLD ROLLING METHOD, AND METHOD FOR MANUFACTURING COLD ROLLED METAL SHEET
Provided is a cold rolling technology that makes it possible to suppress the occurrence of chattering. This cold rolling facility comprises: a cold tandem rolling mill provided with a plurality of rolling stands; a rolling oil supply system for supplying rolling oil to the cold tandem rolling mill; a plurality of plate thermometers for measuring the plate temperature of a material to be rolled at the entry side or the exit side of each rolling stand; and a control unit for controlling rolling conditions including rolling oil to be supplied to the entry side of each rolling stand. The rolling oil supply system includes a first rolling oil supply system for supplying first emulsion rolling oil, and a second rolling oil supply system for supplying second emulsion rolling oil having an oil content higher than that of the first emulsion rolling oil. The control unit is configured to adjust the mixing ratio of the first emulsion rolling oil and the second emulsion rolling oil at the entry side of a specific stand on the basis of the measurement result from the plate thermometer at the entry side or the exit side of the specific stand, and to supply the mixed rolling oil to the specific stand.
B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
B21B 38/00 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
A belt management device (10) for managing a damage state of a belt driven by a drive mechanism, said belt management device comprising: a belt surface measurement device (11) for measuring a surface shape of the belt; a calculation device (12) for generating time-series data in which information on the measured surface shape of the belt in time-series and information on a measurement position of the belt are associated with each other; and an analysis device (14) for predicting a future damage state of the belt on the basis of the time-series data.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
G01B 21/20 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
82.
STEEL SHEET, MEMBER, AND METHODS FOR PRODUCING SAME
A steel sheet and a member with a TS of 1180 MPa or more, and a method for producing them, are disclosed. A base steel sheet has a specified chemical composition. In a steel microstructure of the base steel sheet, bainitic ferrite, tempered martensite, retained austenite, and fresh martensite are in specified ranges. The concentration of carbon in retained austenite and the density of carbides in tempered martensite are in specified ranges. The amount of diffusible hydrogen is 0.50 ppm by mass or less. A V-VDA bending test is performed to the maximum load point. In an L cross section, a crack has a length of 400 μm or less. In a specified region of VDA bending, a change in the grain size of bainitic ferrite in the thickness direction due to processing is 5.0 or less.
An automotive body side structure includes: a side sill extending in a vehicle length direction; a battery pack disposed vehicle inside in a vehicle width direction relative to the side sill; and a collision energy absorptive part having a substantially U-shaped cross section, the substantially U-shaped cross section including: a bottom portion substantially parallel to a vehicle height direction; and a pair of side wall portions continuous from an upper end and a lower end of the bottom portion. The collision energy absorptive part is provided in a protruding shape toward vehicle outside in the vehicle width direction on an outer peripheral side in the vehicle width direction of the battery pack facing the side sill. The collision energy absorptive part is made of a steel sheet having a tensile strength of 270 MPa-class to 340 MPa-class and a plate thickness of 1.0 mm to 1.4 mm.
B62D 21/15 - Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
B60L 50/64 - Constructional details of batteries specially adapted for electric vehicles
H01M 50/242 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
84.
SLAB FOR HIGH-STRENGTH STEEL SHEET AND COOLING METHOD THEREOF, PRODUCING METHOD OF HIGH-STRENGTH HOT-ROLLED STEEL SHEET, PRODUCING METHOD OF HIGH-STRENGTH COLD-ROLLED STEEL SHEET, AND PRODUCING METHOD OF HIGH-STRENGTH PLATED STEEL SHEET
A slab for a high-strength steel sheet and a cooling method thereof are disclosed. In addition, producing methods of a high-strength hot-rolled steel sheet, a high-strength cold-rolled steel sheet, and a high-strength plated steel sheet using that slab are provided. The slab for a high-strength steel sheet is a slab continuously cast for a high-strength steel sheet, and is characterized in that an average prior austenite grain size at the position 10 mm from a slab surface layer is 2.0 mm or less, and that the slab has a microstructure in which bainitic ferrite and tempered martensite in total account for 50% or more and 97% or less by area, residual austenite accounts for 3% or more and 30% or less by area, ferrite accounts for 20% or less by area, and pearlite and quenched martensite in total account for 20% or less by area.
Provided is iron-based powder for an oxygen reactant that does not require the use of a metal halide and has excellent oxygen reactivity. The iron-based powder for an oxygen reactant contains iron powder having an atomic number ratio of oxygen to iron, O/Fe, of 0.30 or less, and at least one additive powder selected from the group consisting of copper powder, nickel powder, molybdenum powder, copper oxide powder, nickel oxide powder, and molybdenum oxide powder. The additive powder content is 1.0 mass % or more and 40.0 mass % or less.
B22F 9/22 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
86.
STEEL SHEET, MEMBER, AND METHODS FOR PRODUCING SAME
A base steel sheet is disclosed having a specified chemical composition and a steel microstructure at a quarter thickness position containing specified ranges of ferrite, fresh martensite, retained austenite, bainite, tempered bainite, and tempered martensite, the value obtained by dividing the total area fraction of isolated island-like fresh martensite and isolated island-like retained austenite by the sum of the area fraction of fresh martensite and the volume fraction of retained austenite in a ferrite grain is 0.65 or more, the isolated island-like fresh martensite and the isolated island-like retained austenite in the ferrite grain has an average grain size of 2.0 μm or less, and the amount of diffusible hydrogen in the base steel sheet is 0.50 ppm by mass or less.
Provided is a ferritic stainless steel having excellent high-temperature proof stress and excellent oxidation resistance. A ferritic stainless steel comprises a predetermined chemical composition, and has an amount of solute Nb of more than 1.00 mass %.
A continuously cast slab that is unlikely to cause thermal cracking during cooling therefor even if the toughness of the slab is low, and a method for producing the same. Specifically, a continuously cast slab for high-strength steel with features such that the average prior austenite grain size at a position 10 mm from the surface layer of the continuously cast slab is in the range of 0.5 mm to 2.0 mm; and a total of an area ratio of ferrite and an area ratio of pearlite in the microstructure of the slab is 90% or more, and the area ratio of ferrite is less than 5% or 10% or more.
Provided is iron-based powder for an oxygen reactant that has excellent oxygen reactivity. The iron-based powder for an oxygen reactants contains iron powder having an atomic number ratio of oxygen to iron, O/Fe, of 0.30 or less and carbonaceous powder having a C content of 50 mass % or more. The carbonaceous powder content is 0.20 mass % or more and 30.00 mass % or less.
B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
B01J 20/02 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material
90.
COLD ROLLING MILL ROLLING CONDITION SETTING METHOD, COLD ROLLING METHOD, STEEL SHEET MANUFACTURING METHOD, COLD ROLLING MILL ROLLING CONDITION SETTING DEVICE, AND COLD ROLLING MILL
A cold rolling mill rolling condition setting method using a prediction model generated with an explanatory variable being first multi-dimensional data obtained by transforming past rolling performance data including three-dimensional steel sheet information including information regarding a portion outside a sheet edge of the roll target material on an entry side of the cold rolling mill into multi-dimensional data, and an objective variable being a controlled variable of a steering roll and a press position of the cold rolling mill, the method includes estimating at least one of the controlled variable of the steering roll and the press position of the cold rolling mill, the estimation performs by inputting second multi-dimensional data to the prediction model, the second multi-dimensional data generates from the three-dimensional steel sheet information including the information regarding the portion outside the roll target material sheet edge on the entry side of the cold rolling mill.
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
B21B 37/30 - Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
91.
COLD ROLLING METHOD, METHOD FOR MANUFACTURING STEEL SHEET, COLD ROLLING FACILITY, AND METHOD FOR CONTROLLING COLD ROLLING FACILITY
The present invention involves performing a rolling process on a steel sheet while maintaining the temperature of the steel sheet within the range not lower than a ductile-brittle transition temperature but not higher than a non-uniform deformation occurrence temperature. This cold rolling method is for performing a rolling process on a steel sheet S by means of a plurality of rolling stands std arranged in the conveying direction of the steel sheet S while supplying a rolling oil to each of the plurality of rolling stands std. The method comprises supplying at least a portion of the rolling oil recovered from a rolling stand std disposed on a downstream side in the conveying direction of the steel sheet S among the plurality of rolling stands std, to a prescribed number of the rolling stands std including the rolling stand std disposed most stream in the conveying direction of the steel sheet S.
B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
92.
FILM FOR COATING METAL PLATE, RESIN-COATED METAL PLATE, METHOD FOR PRODUCING FILM FOR COATING METAL PLATE, AND METHOD FOR PRODUCING RESIN-COATED METAL PLATE
Provided are a film for coating a metal plate and a resin-coated metal plate that have exceptional ink adhesion. Provided is a film for coating a metal plate, the film having a polyester resin as a main component. The film 3 for covering a metal plate has a multilayer structure of two or more layers including a first outermost layer 3a and a second outermost layer 3b. The melting point of the film 3 is 230-260°C. The first outermost layer 3a contains 0.1-15 mass% of readily-sliding inorganic particles composed of silica having an average particle diameter of 0.2-1.0 μm. The number of readily-sliding inorganic particles distributed on the surface of the first outermost layer 3a is 400 or more per 1 mm2. The surface roughness Ra of the first outermost layer 3a is 0.30 μm or greater. The first outermost layer 3a contains at least 0.010 mass% and less than 1.0 mass% of a polyolefin as a lubrication component.
B29C 55/04 - Shaping by stretching, e.g. drawing through a dieApparatus therefor of plates or sheets uniaxial, e.g. oblique
B32B 27/20 - Layered products essentially comprising synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
Provided is steel for induction hardening that has excellent cold forgeability and, in a process of producing an induction hardened component, allows omission of annealing before cold forging and refining heat treatment before induction hardening. The steel for induction hardening includes a chemical composition containing C: 0.36 mass % to 0.55 mass %, Si: 0.10 mass % or less, Mn: 0.15 mass % to 0.45 mass %, P: 0.050 mass % or less, S: 0.050 mass % or less, Al: 0.010 mass % to 0.090 mass %, Mo: 0.05 mass % to 10 0.35 mass %, Ti: 0.010 mass % to 0.200 mass %, B: 0.0005 mass % to 0.0100 mass %, and N: 0.0150 mass % or less, with the balance being Fe and impurity. The total fraction of ferritic microstructure and pearlitic microstructure is 80% or more, and the fraction of ferritic microstructure is 40% or more.
C21D 8/06 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
A scrap discrimination system that can improve scrap discrimination technology are provided. A scrap discrimination system includes a scrap part extraction model that extracts, based on a camera image, a scrap part located in a central portion included in the camera image with reference to a window defined in advance in an image, a scrap discrimination model, generated by teacher data including training images, that sorts grades of scrap and a ratio of each grade from a scrap image extracted by the scrap part extraction model, and an output interface that outputs information on the grades of scrap and the ratio of each grade as discriminated based on the scrap image using the scrap discrimination model.
A transport vehicle includes a vehicle body comprising a cargo bed; an antenna for receiving positional information from a satellite positioning system; a satellite positioning for receiver receiving the positional information via the antenna; an antenna support member being a physical member comprising an antenna attachment portion with the antenna attached thereto and a vehicle body connector connected to the vehicle body; an automatic driving control apparatus comprising a processor including a vehicle position estimator for estimating a vehicle position of the transport vehicle; an antenna actuator for causing the antenna support member to move; an antenna position controller for controlling the antenna actuator; and an antenna control apparatus comprising a processor including a reception status determiner for determining a reception status of the antenna. The antenna position controller controls the antenna actuator to move the antenna or stop the antenna support member depending on the reception status.
Provided is an iron-based soft magnetic powder for a dust core, that allows manufacturing of a dust core with reduced hysteresis loss. More specifically, this iron-based soft magnetic powder for a dust core has a component composition satisfying at least one of the following: S: 20 ppm or less, Sn and Sb: total 200 ppm or less, S: 10 ppm or less, and Sn and Sb: total 5 ppm or more in mass concentration.
H01F 1/20 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
97.
FERRITIC STAINLESS STEEL FOR AMMONIA COMBUSTION ENVIRONMENT
333333 combustion environment has a component composition which contains, in mass%, 0.020% or less of C, 0.05-2.50% of Si, 0.05-2.00% of Mn, 0.050% or less of P, 0.010% or less of S, 0.20-6.00% of Al, 0.020% or less of N, and 12.0-25.0% of Cr, and in which the remaining portion includes Fe and unavoidable impurities.
Provided is a high-strength hot-dip galvanized steel sheet having a tensile strength of 780 MPa or more and excellent hydrogen desorption properties. The high-strength hot-dip galvanized steel sheet comprises a base material steel sheet, and a hot-dip zinc-plated layer formed on a surface of the base material steel sheet, wherein: the base material steel sheet has a predetermined component composition; the hot-dip zinc-plated layer has therein cracks extending continuously from the surface of the hot-dip zinc-plated layer to an interface between the base material steel sheet and the hot-dip zinc-plated layer, and further connecting to a crystal grain boundary of the base material steel sheet at an interface between the base material steel sheet and the hot-dip zinc-plated layer; and the crack density is at least 10 pieces/mm in a cross section of the steel sheet and the tensile strength is 780 MPa or more.
The present invention provide: a steel sheet which has a tensile strength TS of 1,320 MPa or more, a yield ratio YR of 75% or more, and excellent stretch flangeability, excellent fatigue resistance of a shear end surface part, and excellent delayed fracture resistance in a corrosive environment; a member; and production methods for these. A steel sheet according to the present invention has a specific component composition, and has a structure in which, at the position of 1/4 the sheet thickness, the amount of tempered martensite is 95% or more in terms of area fraction, the amount of retained austenite is less than 3% in terms of volume fraction, and the total amount of ferrite and bainitic ferrite is less than 5% in terms of area fraction. When P(C) is the average value of the occupancies of packets that each have the maximum occupancy in prior austenite grains at the central position in the sheet thickness direction of the steel sheet and P(S) is the average value of the occupancies of packets that each have the maximum occupancy in prior austenite grains at a depth of 100 µm from the surface of the steel sheet, the structure satisfies P(C) ≤ 70% and {P(S) - P(C)} ≤ 20%.
The present invention provides: a steel sheet and a member, both having a tensile strength TS of 1180 MPa or more, a yield ratio YR of 65% or more, and excellent ductility, fatigue resistance of a shear end surface part, and delayed fracture resistance in corrosive environments; and methods for manufacturing the steel sheet and the member. This steel sheet has a specific component composition, where, at a 1/4 thickness position of the steel sheet, the tempered martensite content is 83% or more in terms of area fraction, the residual austenite content is less than 3% in terms of volume fraction, and the total ferrite and bainitic ferrite content is 5% to 15% in terms of area fraction. When the average value of the occupancy of packets having the greatest occupancy in prior austenite grains at the center of the steel sheet thickness is defined as P(C) and the average value of the occupancy of packets having the greatest occupancy in prior austenite grains at a depth of 100 μm from the surface of the steel sheet is defined as P(S), the steel sheet has a microstructure satisfying P(C) ≤ 70% and {P(S) – P(C)} ≤ 20%.
