According to the present invention, an electromagnetic steel sheet to be used for a laminated core has an insulating coating film 3 on the surface of a base steel sheet 2, said insulating coating film 3 being formed by applying a coating composition for electromagnetic steel sheets. This coating composition for electromagnetic steel sheets is obtained by blending, at a specific ratio, an epoxy resin, a first curing agent that is composed of an alkyl phenol, and a second curing agent that is composed of one or both of a phenolic resole resin and a phenolic novolac resin.
B32B 15/092 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising epoxy resins
C09D 5/25 - Electrically-insulating paints or lacquers
C09D 163/00 - Coating compositions based on epoxy resinsCoating compositions based on derivatives of epoxy resins
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 1/18 - 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 with insulating coating
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H02K 1/04 - Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
2.
COATING COMPOSITION FOR ELECTRICAL STEEL SHEET, ADHESIVE SURFACE-COATED ELECTRICAL STEEL SHEET AND LAMINATED CORE
This coating composition for an electromagnetic steel sheet comprises: an epoxy resin; a phenol-based curing agent (A); and at least one amine-based curing agent (B) selected from among aromatic amine and dicyandiamide, wherein the content of the phenol-based curing agent (A) is 1-40 parts by mass with respect to 100 parts by mass of the epoxy resin, and the content of the amine-based curing agent (B) is 0.5-5 parts by mass with respect to 100 parts by mass of the epoxy resin.
B32B 15/092 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising epoxy resins
B32B 27/26 - Layered products essentially comprising synthetic resin characterised by the use of special additives using curing agents
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
This electromagnetic steel sheet comprises a base steel sheet, a first insulating coating that is formed on a first surface of the base steel sheet and is capable of adhesion, and a second insulating coating that is formed on a second surface of the base steel sheet on the reverse of the first surface and is capable of adhesion. The average pencil hardness of the first insulating coating is HB to 3H, and the average pencil hardness of the second insulating coating is greater than the average pencil hardness of the first insulating coating.
H01F 1/147 - Alloys characterised by their composition
H01F 1/18 - 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 with insulating coating
H02K 1/04 - Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
In this layered core manufacturing method, core single sheets are obtained by punching electromagnetic steel strips provided with an insulative coating, and by layering the core single sheets a layered core is manufactured. Immediately prior to the punching, at least two of the electromagnetic steel strips are pressed using guide rollers and are thereby temporarily adhered. The at least two electromagnetic steel strips that have been temporarily adhered are inserted into a punching tool, and the punching is carried out to obtain the core single sheets.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
5.
COATING COMPOSITION FOR ELECTRICAL STEEL SHEET, ELECTRICAL STEEL SHEET, LAMINATED CORE AND ELECTRIC MOTOR
This coating composition for electromagnetic steel sheets contains an epoxy resin, a latent epoxy resin curing agent and a thermoplastic elastomer; the thermoplastic elastomer has a melting point of from 100°C to 200°C and a bending modulus of elasticity of more than 5 MPa but not more than 100 MPa; and the content of the thermoplastic elastomer is not less than 10 parts by mass but less than 40 parts by mass relative to a total of 100 parts by mass of the epoxy resin and the latent epoxy resin curing agent.
B32B 15/092 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising epoxy resins
H01F 1/18 - 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 with insulating coating
H02K 1/04 - Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
Provided is a method for producing reduced iron by reducing iron oxide charged in a shaft furnace, wherein a mixed gas containing a reducing gas and a nitrogen gas and heated to a predetermined temperature is blown into the shaft furnace, the reducing gas containing at least 90 vol% of hydrogen gas.
An austenitic wear-resistant steel sheet according to an aspect of the present invention has: a predetermined chemical composition in which the contents of C and Mn in mass% satisfy -20×C+30
C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium
C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
C22C 38/20 - Ferrous alloys, e.g. steel alloys containing chromium with copper
C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
B23K 11/00 - Resistance weldingSevering by resistance heating
A steel material which has a chemical composition that contains, in mass%, 0.01-0.20% of C, 0.01-1.00% of Si, 0.05-3.00% of Mn, 0-0.050% of P, 0-0.0100% of S, 0.05-0.25% of Sn, 0-0.100% of Al, 0.0005-0.0100% of N, 0.0001-0.0100% of O, 0-0.050% of Ti, 0-0.050% of Nb, 0-0.050% of V, 0-0.050% of W, 0-0.050% of Mo, 0-0.10% of Cu, 0-0.05% of Ni, 0-0.10% of Cr, 0-0.05% of Sb, 0-0.0010% of B, 0-0.0100% of Ca, 0-0.0100% of Mg and 0-0.0100% of REM, with the balance made up of Fe and impurities. This steel material is configured such that the Sn ratio, which is expressed by the a/b ratio between the Sn concentration (a) at the crystal grain boundaries and the Sn concentration (b) within the crystal grains, is 1.2 or less.
Provided is a method for producing reformed coal, the method having a dry distillation step for dry-distilling coal at 300-650°C to obtain dry-distilled coal, and an oxidation treatment step in which the dry-distilled coal is subjected to oxidation treatment for 10-60 minutes in a temperature range from more than 200°C to no more than 240°C.
Provided are: a nickel-containing steel sheet for low-temperature applications which has a prescribed chemical composition, a residual austenite volume fraction of 3.0-20.0 vol% at a position 1.5 mm from the surface in the thickness direction, and a maximum distance of at most 12.5 µm between adjacent residual austenite grains on a prior austenite grain boundary at the position 1.5 mm from the surface in the thickness direction, wherein residual austenite grains have an equivalent diameter of at most 2.5 µm at a position 1/4 of the sheet thickness from the surface in the thickness direction; and a tank using a nickel-containing steel sheet for low-temperature applications.
This device for detecting a magnetic property changing part of an elongated material comprises: an excitation coil into which an elongated material is inserted and which magnetizes the elongated material along the longitudinal direction; a detection coil into which the elongated material is inserted and which detects the magnetic flux generated in the elongated material by the magnetization by the excitation coil; and a yoke member having a first opening section, which is positioned on one side along the longitudinal direction of the elongated material and into which the elongated material is inserted, and a second opening section, which is positioned on the other side along the longitudinal direction of the elongated material and into which the elongated material is inserted, and having a shape that is approximately axially symmetric with respect to an axial line passing the first opening section and the second opening section, wherein the excitation coil and the detection coil are surrounded by the yoke member, the first opening section, and the second opening section.
G01N 27/80 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating mechanical hardness, e.g. by investigating saturation or remanence of ferromagnetic material
13.
HOT-ROLLED STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Provided is a hot-rolled steel sheet that has a prescribed composition and that includes a two-phase structure in which a martensite phase has a structural fraction of 10-40% in terms of area fraction, and in which a ferrite phase has a structural fraction of at least 60%, wherein ferrite grains have an average grain diameter of at most 5.0 μm, and the coverage factor of martensite grains by the ferrite grains is more than 60%. Also provided is a hot-rolled steel sheet manufacturing method comprising: a step for achieving, in the last three rolling stands, a rolling load of at least 80% of that of an immediately-preceding rolling stand, and an average rolling temperature of 800-950°C; and a step for forced-cooling a steel sheet and then rolling up the steel sheet, wherein the forced cooling starts within 1.5 seconds of the termination of rolling to cool down the steel sheet to 600-750°C at an average cooling rate of at least 30°C/sec, and then the steel sheet is subjected to spontaneous cooling for 3-10 seconds, and then further cooled down to 200°C or lower at an average cooling rate of at least 30°C/sec.
The coated metallic sheet according to the present invention has a metallic sheet and a fat-containing first coating film which is disposed at least on one surface of the metallic sheet, wherein: the first coating film has a first region having a urethane linkage backbone and a second region having a triazine ring backbone; the first coating film has a glass transition temperature of 85-170°C; and when the second region is stained with osmium oxide and observed with a transmission-type electron microscope in a magnification ratio of 100,000, a dispersive second region in which particles having a number average particle diameter not less than 5 nm are dispersed and a concentrated second region in which such particles having a number average particle diameter not less than 5 nm are not found, are observed.
B32B 15/095 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyurethanes
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
B05D 7/24 - 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 for applying particular liquids or other fluent materials
B32B 15/098 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
B32B 27/20 - Layered products essentially comprising synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
B32B 27/42 - Layered products essentially comprising synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
C09D 161/26 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
The present invention provides an overlapping bonded structure in which breaking of a bonded section at holes formed during bonding can be prevented when an overlapping section formed by overlapping a plurality of meal plate members is bonded by means of a mechanical bonding means or a friction stir spot-welding means. This overlapping bonded structure, in which overlapping portions of a plurality of plate members are spot-welded at a plurality of bonded sections by means of a mechanical bonding means or a friction stir spot-welding means, and in the bonded sections a hole into which the mechanical bonding means is inserted or a hole formed during the spot-welding by the friction stir spot-welding means exists in at least one plate member, is characterized in that a cutout recess is formed between adjacent bonded sections, from an end portion of the overlapping section in the bonded-section direction, in the overlapping section of at least one of the plate sections, and when the inner diameter of the hole is K, an inside bottom portion of the cutout recess is formed at a position having a depth of K or greater from the end portion of the overlapping section.
F16B 5/02 - Joining sheets or plates to one another or to strips or bars parallel to them by means of fastening members using screw-thread
B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
B62D 21/09 - Means for mounting load bearing surfaces
B62D 25/00 - Superstructure sub-unitsParts or details thereof not otherwise provided for
F16B 5/04 - Joining sheets or plates to one another or to strips or bars parallel to them by means of riveting
F16B 5/08 - Joining sheets or plates to one another or to strips or bars parallel to them by means of welds or the like
This electrolytically Sn-plated steel sheet is provided with: a base steel sheet; and an electrolytic Sn plating layer which is arranged on the base steel sheet and has an Sn layer and an alloy layer, while containing a specific component. The Pb content in the whole electrolytic Sn plating layer is 50 ppm by mass or less. If the thickness of the electrolytic Sn plating layer is represented by t and the region from the surface of the electrolytic Sn plating layer to the depth of ((1/10) × t) in the plate thickness direction is defined as a surface layer region, the Pb content in the surface layer region is 5 ppm by mass or more, and the Pb content in the surface layer region is higher than the Pb content in the whole electrolytic Sn plating layer.
This method for manufacturing a cold forged product is for manufacturing a bottomed cylindrical cold forged product by moving a punch in an approaching/separating direction with respect to a workpiece placed in a die. The distance L1 (mm) between a first reference position and an end edge of a first annular cooling-medium flow path closest to the workpiece satisfies H-t < L1 < 1.5 × H, wherein, when viewed in the approaching/separating direction, the length of the workpiece before start of pressing is defined by H (mm), the ending position of pressing is defined by the first reference position, and the thickness of the bottom of the cold forged product is defined by t (mm).
This nickel-containing steel for use at low temperatures has a chemical composition comprising, in mass%, 0.020-0.070% of C, 0.03-0.30% of Si, 0.20-0.80% of Mn, 12.5-17.4% of Ni, 0.010-0.060% of Al, 0.0015-0.0060% of N, and 0.0007-0.0030% of O, and has a metallic structure which includes an austenite phase at a volumetric fraction of 2.0-30.0%, wherein, at a sheet thickness central part in a surface parallel to a rolling direction and a thickness direction, the average particle size of prior austenite grains is 3.0-20.0 μm, and the average aspect ratio of the prior austenite grains is 1.0-2.9.
This nickel-containing steel for low-temperature use has a chemical composition within a prescribed range. The metal structure in the center section of the plate thickness contains an austenite phase of 2.0–20.0 volume%, the average grain diameter of prior austenite grains is 3.0–15.0 µm, the average aspect ratio of the prior austenite grains is 1.0–2.4, the plate thickness is 4.5–30 mm, the chemical components and the average grain diameter of prior austenite grains are further restricted according to plate thickness, the yield stress at room temperature is 460–710 MPa, and the tensile strength at room temperature is 560–810 MPa.
This nickel-containing steel for low-temperature use has: a chemical composition that contains, in mass%, 0.030%–0.070% C, 0.03%–0.30% Si, 0.10%–0.80% Mn, 12.5%–17.4% Ni, 0.03%–0.60% Mo, 0.010%–0.060% Al, 0.0015%–0.0060% N, and 0.0007%–0.0030% O; a metal composition that includes, in volume fraction%, 2.0%–30.0% austenite phase; an average prior austenite grain diameter of 3.0–20.0 µm, in a plate thickness center section in a plane parallel to the extension direction and the plate thickness direction; and an average prior austenite grain aspect ratio of 3.1–10.0.
This Ni steel has: a chemical composition within a prescribed range; a metal composition in the plate thickness center section that contains a 2.0–20.0 volume% austenite phase; an average grain diameter for prior austenite grains of 3.0–12.0 µm; an average prior austenite grain aspect ratio of 2.6–10.0; a plate thickness of 4.5–20 mm; a yield stress at room temperature of 590–710 MPa; a tensile strength at room temperature of 690–810 MPa; at least 11.5% Ni when the plate thickness exceeds 16 mm; and an average grain diameter for prior austenite grains of no more than 6.0 µm when the plate thickness is no more than 16 mm and there is less than 11.5% Ni.
This electric furnace is provided with: one or more upper electrodes; one or more bottom-blowing tuyeres; a mechanical agitator including an impeller; and a feeding device for feeding an iron oxide-containing iron raw material.
C21B 11/10 - Making pig-iron other than in blast furnaces in electric furnaces
F27B 3/08 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces heated electrically, e.g. electric arc furnaces, with or without any other source of heat
C22B 5/10 - Dry processes by solid carbonaceous reducing agents
23.
BEAM JOINING METHOD, BEAM JOINING STRUCTURE, AND SUPPORT MEMBER
A beam joining method according to a first embodiment of the present invention comprises: a joining step for joining a beam made of H-shaped steel extending in the horizontal direction, to a structure member at a position above a gap in a state where the gap is generated, in the horizontal direction, between a lower flange of the beam and the structure member; a fixing step for inserting, into the gap, a first wedge member having an obliquely upward first inclined surface that horizontally faces the structure member, and fixing the first wedge member to the lower flange; and a press-fitting step for press-fitting a second wedge member into a portion between the structure member and the first wedge member by moving the second wedge member downward while causing sliding-contact of an obliquely downward second inclined surface of the second wedge member with the first inclined surface.
The threaded connection partially in a self-locking arrangement comprises a first and a second tubular component provided respectively with male and female threaded zone at their respective ends. Only a portion (10p) of a first portion (11) with varying thread width of the male threaded zone (3) cooperate by self-locking tightening with only a portion (10b) of the second portion (12) with varying thread width of the female threaded zone (4) when made up one into the other. The connection is able to withstand high torques required for special applications such as drilling with casing or intermediate casing.
NIPPON STEEL CHEMICAL & MATERIAL CO., LTD. (Japan)
NIPPON STEEL & SUMITOMO METAL CORPORATION (Japan)
Inventor
Murakami Shinkichi
Nakatsuka Jun
Ishii Mamoru
Inaguma Toru
Iijima Takashi
Negi Noriyuki
Okada Katsumi
Abstract
Provided are a separator for fuel cells, the separator not only having excellent gas impermeability and conductivity but also excellent corrosion resistance, surface flatness, and flexibility, a method for producing the separator, and a separator precursor. The present invention is a separator for fuel cells, a method for producing the separator for fuel cells, and a separator precursor useful for obtaining the separator, the separator comprising: a metal substrate; a power generation part that is formed from a carbon resin composite layer laminated on at least one surface of the metal substrate; and a flat surface section that is provided on the outer peripheral edge of the carbon resin composite layer and surrounds the outer periphery of the power generation part, wherein the carbon resin composite layer forming the power generation part has a resin content of 5 to 50 mass% and a porosity of 3 to 30 volume%, the flat surface section has a resin section that contains a surface resin on at least the front surface side and a buffer section that has a resin impregnated region formed through permeation by the surface resin, and the surface roughness Ra of the resin section of the flat surface section is 1 to 10 μm.
233, a metal soap, a wax and a basic aromatic organic acid metal salt. A threaded joint (1) for pipes according to one embodiment of the present invention is provided with a pin (5) and a box (8). Each of the pin (5) and the box (8) has a threaded part (4, 7) and a contact surface that has a non-threaded metal contact part. The threaded joint (1) for pipes is provided with a lubricating coating film layer (21), which is formed from the above-described composition, on the contact surface of at least one of the pin (5) and the box (8); and the lubricating coating film layer (21) functions as the outermost layer.
C10M 169/06 - Mixtures of thickeners and additives
C10M 115/04 - Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing oxygen
C10M 115/10 - Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing sulfur
C10M 117/08 - Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to a carbon atom of a six-membered aromatic ring
C10M 125/10 - Metal oxides, hydroxides, carbonates or bicarbonates
C10M 129/40 - Carboxylic acidsSalts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms monocarboxylic
C10M 159/06 - Waxes, e.g. ozocerite, ceresine, petrolatum or slack-wax
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 30/06 - OilinessFilm-strengthAnti-wearResistance to extreme pressure
C10N 40/00 - Specified use or application for which the lubricating composition is intended
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
F16L 15/04 - Screw-threaded jointsForms of screw-threads for such joints with additional sealings
C25D 7/00 - Electroplating characterised by the article coated
B32B 3/30 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
C25D 5/26 - Electroplating of metal surfaces to which a coating cannot readily be applied of iron or steel surfaces
C25D 5/36 - Pretreatment of metallic surfaces to be electroplated of iron or steel
C25D 5/48 - After-treatment of electroplated surfaces
29.
THREADED JOINT FOR PIPES AND METHOD FOR PRODUCING THREADED JOINT FOR PIPES
Provided is a threaded joint for pipes, which has achieved excellent welding resistance without performing a surface roughening step, said excellent welding resistance being comparable to those in cases where a surface roughening step is performed, and which has low shouldering torque. A threaded joint (50) for pipes according to the present invention is provided with a pin (13) and a box (14). This threaded joint for pipes is provided with a Zn-Ni alloy plating layer (21) and a solid lubricating coating film (23). The Zn-Ni alloy plating layer (21) is formed on a contact surface of at least one of the pin (13) and the box (14), and contains 10-16% by mass of Ni. The solid lubricating coating film (23) is formed on the Zn-Ni alloy plating layer (21). The contact surface, on which the Zn-Ni alloy plating layer (21) is formed, has been ground. If Ra1 is the arithmetic mean roughness of the surface of the Zn-Ni alloy plating layer (21) and Ra2 is the arithmetic mean roughness of the contact surface, Ra1 is 0.1-3.2 μm, and Ra1 is larger than Ra2.
F16L 15/04 - Screw-threaded jointsForms of screw-threads for such joints with additional sealings
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
F16L 15/00 - Screw-threaded jointsForms of screw-threads for such joints
C25D 5/26 - Electroplating of metal surfaces to which a coating cannot readily be applied of iron or steel surfaces
30.
METHOD AND DEVICE FOR MANUFACTURING OUTER-PLATE PANEL HAVING CHARACTER LINE
Provided is an outer-plate panel manufacturing method with which it is possible, when manufacturing an outer-plate panel having a character line by pressing, to suppress the occurrence of line misalignment. A punch 2 has a punch apex portion 2a provided with a projecting portion 2b for molding a bent surface of a character line and a punch shoulder R portion 2c. At least one of the projecting portion 2b and the punch shoulder R portion 2c provides a blank with a surface pressure higher than a surface pressure with which the blank is provided by means of a remaining portion 2d of the punch 2 excluding the projecting portion 2b and the punch shoulder R portion 2c. A first portion of the punch 2 including at least one of the projecting portion 2b and the punch shoulder R portion 2c has a coefficient of static friction with respect to the blank which is greater than a coefficient of static friction of a second portion of the punch 2 excluding the first portion with respect to the blank.
B62D 65/00 - Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
31.
TORSION BEAM MANUFACTURING METHOD AND TORSION BEAM MANUFACTURING DEVICE
This torsion beam manufacturing method is for manufacturing a torsion beam provided with: a central part in which a cross-section orthogonal to the longitudinal direction is a closed cross-section of a roughly V or U shape at an arbitrarily defined position in the longitudinal direction; and a shape change part which is connected to the central part and has a connection region having a closed cross-section shaped differently from that of said closed cross-section. This torsion beam manufacturing method has a compression step for making the torsion beam by increasing the thickness of at least the connection region through application of a compression force in the longitudinal direction with respect to at least the connection region in the torsion beam material in which the central part and the shape change part have been formed.
B21D 22/02 - Stamping using rigid devices or tools
B21D 53/86 - Making other particular articles other parts for bicycles or motorcycles
B60G 9/04 - Resilient suspensions for a rigid axle or axle housing for two or more wheels the axle or housing not being pivotally mounted on the vehicle
32.
HOT-STAMP MOLDED ARTICLE, HOT-STAMP STEEL SHEET, AND METHODS FOR PRODUCING THESE
All or part of this hot-stamp molded article has a chemical composition that includes, in percent by mass, at least 0.001% and less than 0.080% of C, 2.50% or less of Si, at least 0.01% and less than 0.50% of Mn, 0.200% or less of P, 0.0200% or less of S, 0.001-2.500% of sol. Al, 0.0200% or less of N, and at least 0.30% and less than 2.00% of Cr, the balance being Fe and unavoidable impurities. The metal structure includes, in percent by volume, over 60.0% of ferrite, at least 0% and less than 10.0% of martensite, and at least 0% and less than 20.0% of bainite. The tensile strength of the hot-stamp molded article is less than 700 MPa. After a heat treatment for 20 minutes at 170°C, the ΔTS, which is the amount by which the tensile strength is reduced, is 100 MPa or less.
An austenitic stainless steel having a chemical composition, in mass%, of C: 0.04%-0.12%, Si: 0.25%-0.55%, Mn: 0.7%-2.0%, P: not more than 0.035%, S: not more than 0.0015%, Cu: 0.02%-0.80%, Co: 0.02%-0.80%, Ni: 10.0%-14.0%, Cr: 15.5%-17.5%, Mo: 1.5%-2.5%, N: 0.01%-0.10%, Al: not more than 0.030%, O: not more than 0.020%, Sn: 0%-0.01%, Sb: 0%-0.01%, As: 0%-0.01%, Bi: 0%-0.01%, V: 0%-0.10%, Nb: 0%-0.10%, Ti: 0%-0.10%, W: 0%-0.50%, B: 0%-0.005%, Ca: 0%-0.010%, Mg: 0%-0.010%, REM: 0%-0.10%, and balance: Fe and impurities, and satisfying [18.0 ≤ Cr + Mo + 1.5 x Si ≤ 20.0] and [14.5 ≤ Ni + 30 x (C + N) + 0.5 x (Mn + Cu + Co) ≤ 19.5].
An austenitic stainless steel weld metal having a chemical composition, in mass%, of C: 0.01%-0.10%, Si: 0.20%-0.70%, Mn: 0.8%-2.5%, P: not more than 0.035%, S: not more than 0.0030%, Cu: 0.01%-0.60%, Co: 0.01%-1.00%, Ni: 8.0%-12.0%, Cr: 14.5%-17.5%, Mo: 1.0%-2.2%, N: 0.02%-0.10%, Al: not more than 0.030%, O: not more than 0.020%, Sn: 0%-0.01%, Sb: 0%-0.01%, As: 0%-0.01%, Bi: 0%-0.01%, V: 0%-0.10%, Nb: 0%-0.10%, Ti: 0%-0.10%, W: 0%-0.50%, B: 0%-0.005%, Ca: 0%-0.010%, Mg: 0%-0.010%, REM: 0%-0.10%, and balance: Fe and impurities, and satisfying [17.5 ≤ Cr + Mo + 1.5 x Si ≤ 19.5] and [11.0 ≤ Ni + 30 x (C + N) + 0.5 x (Mn + Cu + Co) ≤ 17.0].
Provided is a method for spot welding that is a technique for spot welding with which it is possible to suppress intrusion of hydrogen, which is one factor leading to delayed fracture, during spot welding, wherein the method involves: machining in advance one or both steel sheet surfaces that form facing surfaces of overlapped steel sheets, the machining being carried out at locations that form contact points at which the steel sheets contact each other during initial application of pressure for spot welding, and forming a plurality of lines that extend through the contact points to beyond the contact points; and performing spot welding at the locations of the contact points. Also provided is a steel sheet on which a plurality of lines are machined in advance at locations that form contact points at which steel sheets contact each other during initial application of pressure for the spot welding.
This steel sheet has a predetermined chemical composition, and the carbon equivalent represented by a specific formula falls within a predetermined numerical range. The metal structure at a position of ¼ of the thickness from the steel sheet surface (1/4 of the sheet thickness) has, in area fraction, 10-75% ferrite phase, 10-90% bainite phase, 0-15% pearlite phase and 0-1% martensite/austenite mixed phase, with the average particle size (diameter) measured by electron backscatter analysis of all phases not exceeding 20 µm. The circle-equivalent diameter (diameter) contained in ¼ of the thickness of the steel sheet is at least 2 µm, the total of oxides, sulfides and oxysulfides does not exceed 50 units/mm2(1/2)(1/4)(1/2)(1/4)(1/4)) at a position at a quarter of the sheet thickness (quarter sheet thickness) is 0.90-1.80.
A hat-shaped steel sheet piling 1 that extends in a longitudinal direction and that constitutes a wall by a plurality of same being disposed wherein: the relationship per 1 m length in the width direction of the hat-shaped steel sheet piling 1 between the cross-sectional area A (cm2/m) and the cross-sectional second moment of area I (cm4/m) about a cross section center of gravity line M extending in the width direction in the plan view seen from the longitudinal direction of the hat-shaped steel sheet piling 1 satisfies formula (1); and formula (2A) and formula (2B), formula (3A) and formula (3B), formula (4A) and formula (4B), or formula (5A) and formula (5B) are satisfied with D1 (mm) as the distance between the cross section center of gravity line M and a first intersection point P1 of extension lines for each of a pair of flanges 11 on the plan view, and D2 (mm) as the distance between second intersection points P2 where the cross section center of gravity line M intersects each of the pair of flanges 11. (1): A < 0.00252I + 94.4 (2A): 262.6 < D1 < 281.0 (3A): 496.9 < D1 < 520.9 (4A): 621.5 < D1 < 650.9 (5A): 625.2 < D1 < 654.8 (2B): 484.0 < D2 < 499.0 (3B): 474.0 < D2 < 489.0 (4B): 476.0 < D2 < 491.0 (5B): 474.0 < D2 < 489.0
Provided are a plating adhesion evaluation device, a plating adhesion evaluation method, equipment for manufacturing an alloyed hot-dip galvanized steel sheet, and a method for manufacturing an alloyed hot-dip galvanized sheet, with which it is possible to more accurately measure the quantity of a Γ·Γ single phase and to more accurately evaluate the plating adhesion of an alloyed hot-dip galvanized steel sheet. [Problem] A plating adhesion evaluation device according to the present invention comprises: an X-ray diffraction intensity measurement unit that measures the intensity of X-ray diffraction of a Γ·Γ single phase through an X-ray diffraction method with respect to an alloyed hot-dip galvanized steel sheet; and an evaluation unit that, on the basis of the X-ray diffraction intensity of the Γ·Γ single phase and the galvanization weight, evaluates the plating adhesion of the alloyed hot-dip galvanized steel sheet.
G01N 23/20 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by using diffraction of the radiation by the materials, e.g. for investigating crystal structureInvestigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materialsInvestigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by using reflection of the radiation by the materials
C23C 2/06 - Zinc or cadmium or alloys based thereon
C23C 2/28 - Thermal after-treatment, e.g. treatment in oil bath
An austenitic stainless steel welding metal which has a chemical composition that contains, in mass%, 0.05-0.11% of C, 0.10-0.50% of Si, 1.0-2.5% of Mn, 0.035% or less of P, 0.0030% or less of S, 0.01-1.00% of Co, 9.0-11.5% of Ni, 17.0-21.0% of Cr, 0.60-0.90% of Nb, 0.001-0.100% of Ta, 0.01-0.15% of N, 0.030% or less of Al, 0.020% or less of O, 0-0.10% of V, 0-0.10% of Ti, 0-0.50% of W, 0-0.50% of Mo, 0-0.50% of Cu, 0-0.005% of B, 0-0.010% of Ca, 0-0.010% of Mg and 0-0.10% of REM, with the balance made up of Fe and impurities, and which satisfies (Nb - 7.8 × C) ≤ 0.25.
A welding material for austenitic heat-resistant steel having a chemical composition, by mass, of 0.06 to 0.14% of C, 0.10 to 0.40% of Si, 2.0 to 4.0% of Mn, 0.020% or less of P, 2.0 to 4.0% of Cu, 15.0 to 19.0% of Ni, 16.0 to 20.0% of Cr, 0.50 to 1.50% of Mo, 0.30 to 0.60% of Nb, 0.10 to 0.30% of N, 0.030% or less of Al, 0.020% or less of O, 0 to 0.0030% of S, 0 to 0.0030% of Sn, 0 to 0.0030% of Bi, 0 to 0.0030% of Zn, 0 to 0.0030% of Sb, 0 to 0.0030% of As, 0 to 0.50% of V, 0 to 0.50% of Ti, 0 to 0.50% of Ta, 0 to 2.0% of Co, 0 to 0.020% of B, 0 to 0.020% of Ca, 0 to 0.020% of Mg, 0 to 0.06% of REM, with the remainder being made up by Fe and impurities, and containing two or more elements selected from S, Sn, Bi, Zn, Sb, and As in the range satisfying [0.0005 ≤ S + Sn + Bi + Zn + Sb + As ≤ 0.0030].
Provided are: a core sheet 1 having an annular core back part 11 and a plurality of teeth parts 12 that extend from the core back part 11 toward the radial center O thereof; and a method for manufacturing the same. The core sheet 1 is obtained by carrying out a punching step, a winding step, and a removal step. The removal step includes at least partially removing a region of a grain-oriented magnetic steel sheet 3 where a band-shape core back part is to be formed, a band-shape core back part 21 of a sheet piece 2, and an insulating coating 31 in the core back part 11 of the core sheet 1.
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/04 - Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
H02K 1/12 - Stationary parts of the magnetic circuit
[Problem] To stabilize the coating amount of molten metal applied onto a steel strip. [Solution] Provided is a method for manufacturing a gas wiping nozzle that is provided with a pair of lip sections disposed so as to face each other and a slit formed between the pair of lip sections and serving as a gas blow-out port, the slit being used to blow gas through same onto a steel strip having been pulled up from a plating bath, thereby adjusting the thickness of a molten metal film having adhered to the surface of the steel strip, the method comprising: a fitting process in which fitting protrusions provided on one of the lip sections are fitted into fitting holes provided in the other lip section; and a fixing process in which, while the fitting protrusions and the fitting holes are in a fitted state of having been fitted together, the pair of lip sections are fixed to each other. There are two pairs each constituted by one fitting protrusion and one fitting hole, and the two pairs are removed from each other in the width direction of the steel strip. When said fitted state has been established, relative movement of the pair of lip sections is restricted in the thickness direction of the steel strip, and gaps between the fitting protrusions and the fitting holes in the thickness direction of the steel strip satisfy predetermined conditions.
C23C 2/18 - Removing excess of molten coatings from elongated material
B05B 1/04 - Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops in flat form, e.g. fan-like, sheet-like
The purpose of the invention is to provide a pile construction method that can reliably improve pile bearing capacity. Provided is a pile construction method comprising a step of driving a pile by applying vibration with a vibratory hammer while injecting a high-pressure fluid into the ground, wherein one or more high-pressure fluid delivery devices and a manifold device having a cylindrical inner space are disposed, the one or more high-pressure fluid delivery devices are respectively connected to one or more injection holes in the manifold device, and a plurality of discharge holes in the manifold device are respectively connected to a plurality of jet pipe members. With the inner space of the manifold device filled with the high-pressure fluid, the high-pressure fluid is discharged from each of the plurality of discharge holes and, in terms of the discharge rates of the high-pressure fluid discharged from each of the plurality of discharge holes, the difference between the maximum discharge rate and the minimum discharge rate is no more than 5% of the maximum discharge rate.
A plated steel sheet which comprises: a steel sheet; a first aluminum plating layer which is provided on a first surface of the steel sheet; a zinc compound layer or zinc metal layer, which is provided on the surface of the first aluminum plating layer; and a second aluminum plating layer which is provided on a second surface that is the outermost surface of the steel sheet. A plated steel sheet coil and a method for producing a hot pressed article, each of which uses this plated steel sheet. An automobile component which uses a pressed article that is produced by this method for producing a hot pressed article.
B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
C23C 2/28 - Thermal after-treatment, e.g. treatment in oil bath
45.
STAINLESS STEEL SHEET AND PRODUCTION METHOD THEREFOR, SEPARATOR FOR SOLID POLYMER FUEL BATTERY, SOLID POLYMER FUEL BATTERY CELL AND SOLID POLYMER FUEL BATTERY
Provided are: a stainless steel sheet with excellent corrosion resistance, low contact resistance, and excellent press workability without using expensive starting materials such as gold and rare metals; and a production method therefor. The stainless steel sheet production method has: a step (step S1) for preparing a slab, the chemical composition of which comprises, in mass%, Cr: 20-26%, N: 0.1% or less, Si: 2.0% or less, etc.; a step (step S2) for obtaining a rolled steel sheet of 50-200 µm thickness by hot rolling and cold rolling said slab; an annealing step (step S3) for annealing said rolled steel sheet in a nitrogen-containing gas atmosphere and cooling; and a step (step S4) for pickling said rolled steel sheet after the annealing step in a solution containing a non-oxidizing acid. For said stainless steel sheet, the N content is 0.6-2.0 mass%.
The steel tube according to one embodiment of the present invention comprises: a base material part that comprises a tubular steel sheet; and a weld part that is provided at a joint part of the steel sheet and extends in the longitudinal direction of the steel sheet. The steel sheet has a prescribed component composition, a Ceq of 0.30–0.53, and a Pcm of 0.100–0.165. The metal structure of a surface layer of the steel sheet includes, by area ratio, 0%–50% polygonal ferrite. The metal structure of a 1/4t part of the steel sheet includes, by area ratio, 10%–40% polygonal ferrite. The metal structure of a 1/2t part of the steel sheet includes, by area ratio, 5%–30% polygonal ferrite. The effective grain size at a sheet thickness surface of the steel sheet is no more than 20 μm. At the sheet thickness surface of the steel sheet, hardness is uniformly distributed in the sheet thickness direction, and the difference between the hardness of the surface layer and the hardness of the 1/2t part is no more than 30 Hv.
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
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
This steel pipe includes a base material section composed of a tube of steel plate having a predetermined chemical composition, and a weld section that is provided to a butted section of the steel plate and extends in the longitudinal direction of the steel plate. A surface section metallographic structure, which is the metallographic structure of the base material section in a range from the surface to 1.0 mm in the depth direction, contains polygonal ferrite and granular bainite; the area ratio of the polygonal ferrite in the surface section metallographic structure is 0 to 70%; the total area ratio for the polygonal ferrite and the granular bainite is 50% or more; and the maximum hardness in the surface section metallographic structure is 270 Hv or less. An internal metallographic structure, which is the metallographic structure of the base material section in a range from over 1.0 mm in the depth direction from the surface to a plate thickness center, contains polygonal ferrite at an area ratio of 40% or less; the maximum hardness in the internal metallographic structure is 248 Hv or less; and the mean hardness is 150 to 220 Hv.
This eddy current-type damper (1) is provided with: a threaded shaft (7) that is capable of moving in an axial direction; a plurality of first permanent magnets (3); a plurality of second permanent magnets (4); a magnet holding member (2) formed in a cylindrical shape; a current-conducting member (5) which is formed in a cylindrical shape and which has conductive properties; a ball nut (6) which meshes with the threaded shaft (7); and a heat transfer layer (12) which covers a surface of the current-conducting member (5) facing the first permanent magnets (3) and the second permanent magnets (4). The magnet holding member (2) holds the first permanent magnets (3) and the second permanent magnets (4). The current-conducting member (5) is disposed so as to face, across a gap, the first permanent magnets (3) and the second permanent magnets (4). The ball nut (6) is disposed inside the current-conducting member (5) and the magnet holding member (2) and is fixed to the magnet holding member (2) or the current-conducting member (5). The heat transfer layer (12) has a higher thermal conductivity than the current-conducting member (5).
F16F 15/03 - 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 using electromagnetic means
Provided is a steel material having excellent rolling fatigue characteristics, the steel material being characterized by comprising: 0.10-1.50 mass% of C; 0.01-0.80 mass% of Si; 0.10-1.50 mass% of Mn; 0.02-2.50 mass% of Cr; 0.002-0.010 mass% (exclusive of 0.010) of Al; 0.0001-0.0025 mass% of Ce+La+Nd; 0.0005-0.0050 mass% of Mg; 0.0001-0.0020 mass% of O; 0.000-0.005 mass% (exclusive of 0.005) of Ti; 0.0180 mass% or less of N; 0.030 mass% or less of P; 0.005 mass% or less of S; 0.0000-0.0010 mass% of Ca; 0.00-0.40 mass% of V; 0.00-0.60 mass% of Mo; 0.00-0.50 mass% of Cu; 0.000-0.050 mass% (exclusive of 0.050) of Nb; 0.00-2.50 mass% of Ni; 0.00-0.10 mass% of Pb; 0.00-0.10 mass% of Bi; 0.0000-0.0050 mass% of B; and the balance being Fe and impurities, wherein an inclusion, which is present at the start point of fatigue and detected by an ultrasonic fatigue test, contains Mg, Al, O and at least one among Ce, La and Nd, and also has a composition ratio satisfying formula (1).
This hot-dip plated checkered plate has: a base material steel plate, an Ni plated layer, and a hot-dip plated layer, and has on the plate surface a projecting part and a flat part. The film thickness of the Ni plated layer of the projecting part is 0.07 to 0.4 µm, the film thickness of the Ni plated layer of the flat part is 0.05 to 0.35 µm, and the film thickness of the Ni plated layer of the projecting part is more than 100% and 400% or less than the film thickness of the Ni plated layer of the flat part.
C22C 18/04 - Alloys based on zinc with aluminium as the next major constituent
C23C 2/06 - Zinc or cadmium or alloys based thereon
C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
C25D 21/00 - Processes for servicing or operating cells for electrolytic coating
53.
HOT STAMPING MOLDED ARTICLE AND METHOD AND DEVICE FOR MANUFACTURING HOT STAMPING MOLDED ARTICLE
Provided is a steel hot stamping molded article having: at least one of a tensile strength of 1200 MPa or higher and a martensitic steel structure; and a first part, a corner, and a second part which are sequentially contiguous from one end to the other end in a longitudinal direction, wherein the hot stamping molded article is characterized in that, in a cross-section view perpendicular to the longitudinal direction, each of the first part, the corner, and the second part has a top plate, and two vertical walls which are connected to the top plate, in that the second part has a first outward flange which is adjacent to the vertical walls, and in that the corner has a vertical flange which extends from the vertical walls of the first part, a second outward flange which is adjacent to one of the two vertical walls located on the outer peripheral side of the corner, and a transition part to which the vertical flange and the second outward flange are contiguous.
This Zn-Al-Mg plated steel sheet includes a steel sheet, an alloy layer formed on a surface of the steel sheet and containing Fe and Si, and a plating layer formed on the surface, of the alloy layer, opposite to the steel sheet, wherein: the average composition of the plating layer and the alloy layer contains, in mass%, 45.0-65.0% of Al, 0.50-5.00% of Si, and 1.00-10.00% of Mg, the remaining portion being Zn, Fe, and impurities; the plating layer contains 0.1-20.0% of a Mg-Si phase in terms of volume fraction; when a 1-μm range from the surface of the plating layer in the thickness direction of the plating layer is defined as the surface layer portion of the plating layer, the average equivalent circular diameter of the Mg-Si phase in the surface layer portion in a direction in which a planar view of the plating layer is obtained is 0.1-15.0 μm; the integrated value of the Si content from the surface of the plating layer to the center in the thickness direction of the plating layer is not less than 0.55 times of the integrated value of the Si content from the surface of the plating layer to the interface.
An inspection apparatus (800) reduces the signal intensity of a low-frequency component included in chronological data for the measured value of longitudinal force and generates chronological data for a high-frequency component of the longitudinal force. The inspection apparatus (800) calculates the amount of deviation in line on the basis of the chronological data for the high-frequency component of the longitudinal force.
B61K 9/08 - Measuring installations for surveying permanent way
G01B 21/00 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
An eddy current damper (1) includes a screw shaft (7), a plurality of first permanent magnets (3), a plurality of second permanent magnets (4), a cylindrical magnet holding member (2), a conductive member (5) having conductivity and a cylindrical shape, and a ball nut (6) engaged with the screw shaft (7). The screw shaft (7) is movable in the axial direction. The first permanent magnets (3) are arrayed along the circumferential direction around the screw shaft (7). The second permanent magnets (4) are disposed between the first permanent magnets (3), leaving gaps with the first permanent magnets (3), and dispositions of magnetic poles are inverted between the first permanent magnets (3) and the second permanent magnets (4). The magnet holding member (2) holds the first permanent magnets (3) and the second permanent magnets (4). The conductive member (5) opposes the first permanent magnets (3) and the second permanent magnets (4), leaving gaps with the first permanent magnets (3) and the second permanent magnets (4). The ball nut (6) is disposed in the magnet holding member (2) and the conductive member (5), and is fixed to the magnet holding member (2) or the conductive member (5).
F16F 15/03 - 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 using electromagnetic means
57.
STEEL SHEET FOR CARBURIZATION, AND PRODUCTION METHOD FOR STEEL SHEET FOR CARBURIZATION
Provided are a steel sheet for carburization that demonstrates even superior ultimate ductility prior to carburization, and a production method therefor. This steel sheet contains, in mass%, 0.02% to less than 0.30% C, 0.005% to less than 0.5% Si, 0.01% to less than 3.0% Mn, no more than 0.1% P, no more than 0.1% S, 0.0002% to 3.0% sol.Al, and no more than 0.2% N, with the remainder comprising Fe and impurities. The average value of the ratios of X-ray diffraction intensity in a random sample of the {100}<011> to {223}<110> orientation group of ferrite grains is no higher than 7.0. The average circle equivalent diameter of carbides is no larger than 5.0 μm. The proportion of the number of carbides with an aspect ratio of no higher than 2.0 is at least 80% relative to all of the carbides, and the proportion of the number of carbides present within the ferrite grains is at least 60% relative to all of the carbides.
Provided are a steel sheet for carburizing having excellent ductility, and a production method therefor. This steel sheet contains, by mass%, 0.02% to less than 0.30% C, 0.005% to less than 0.5% Si, 0.01% to less than 3.0% Mn, not more than 0.1% P, not more than 0.1% S, 0.0002% to 3.0% sol. Al, not more than 0.2% N, and 0.010% to 0.150% Ti, with the remainder comprising Fe and impurities. The number of carbides per 1,000 μm2 is not more than 100. The percentage of carbides having an aspect ratio of 2.0 or less is 10% or more relative to all carbides. The average circle equivalent diameter of the carbides is not more than 5.0 μm, and the average crystal grain size of ferrite is not more than 10.0 μm.
Provided is a clock component including a titanium alloy, wherein the titanium alloy contains, in percent by mass, 1.0-3.5% of Al, 0.1-0.4% of Fe, 0.00-0.15% of O, 0.00-0.10% of C, 0.00-0.20% of Sn, and 0.00-0.15% of Si, the balance being Ti and unavoidable impurities. The average grain size of α-phase crystal grains is 15.0 μm or less, the average aspect ratio of the α-phase crystal grains is 1.0-3.0 (inclusive), and the variation coefficient of the number density of β-phase crystal grains dispersed in the α phase is 0.30 or less.
A titanium sheet wherein: the chemical components are, in mass%, Cu: 0.70-1.50%, Cr: 0-0.40%, Mn: 0-0.50%, Si: 0.10-0.30%, O: 0-0.10%, Fe: 0-0.06%, N: 0-0.03%, C: 0-0.08%, H: 0.0.013%, elements other than the above and Ti: 0-0.1% each with the total sum thereof being 0.3% or less, and the balance being Ti; the A value defined by equation (1) is 1.15-2.5 mass%; and in the metal structure thereof, the area fraction of α phases is at least 95%, the area fraction of β phases is 5% or less, the area fraction of intermetallic compounds is 1% or less, and the average crystal grain diameter D (µm) of the α phases is 20-70 µm and satisfies expression (2).
[Problem] To improve, with high mass efficiency, an energy absorbing amount at the time of a load input. [Solution] This hollow member is provided with: a hollow metal member which has a bending induction part in a portion thereof in the longitudinal direction; and a resin member which is made from a resin having a Young's modulus of at least 20 MPa and which is disposed at the bending induction part so as to be in close contact with the metal member.
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
B62D 25/00 - Superstructure sub-unitsParts or details thereof not otherwise provided for
F16S 3/00 - Elongated members, e.g. profiled membersAssemblies thereofGratings or grilles
[Problem] To implement, with high mass efficiency, absorption of energy at the time of a load input. [Solution] This hollow member is provided with: a hollow metal member which has a bending induction part in a portion thereof in the longitudinal direction; and resin members which are disposed on both sides, in the longitudinal direction, of the bending induction part so as to be in close contact with the metal member, and which are disposed within at least a portion of the range of less than five sixths of the cross sectional height of the metal member so as to each extend from an end of the bending induction part toward the outside in the longitudinal direction, wherein the amount of the resin members on the outer side of the bending induction part is larger, per longitudinal length, than that of the resin members on the inner side of the bending induction part.
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
B62D 25/00 - Superstructure sub-unitsParts or details thereof not otherwise provided for
F16S 3/00 - Elongated members, e.g. profiled membersAssemblies thereofGratings or grilles
A titanium alloy member characterized by comprising, in percent by mass, 1.0-8.0% of Al, 0.10-0.40% of Fe, 0.00-0.30% of O, 0.00-0.10% of C, 0.00-0.20% of Sn, and 0.00-0.15% of Si, the balance being Ti and unavoidable impurities; the average grain size of α-phase crystal grains being 15.0 μm or less, the average aspect ratio of the α-phase crystal grains being 1.0-3.0 (inclusive), and the variation coefficient of the number density of β-phase crystal grains distributed in the α phase being 0.30 or less.
This alloy plate has a predetermined chemical composition, the Ti/Al ratio of Ti and Al in atomic% thereof is 0.001-0.100, the metallographic structure thereof includes an austenite phase as a parent phase and a fine second phase having an equivalent circle diameter of 150 nm or less, the surface area of the fine second phase in the metallographic structure being 0 to 8%, and the average value of the aspect ratio L1/L2 being more than 3.0 and no more than 10, where L1 is the length of the long axis and L2 is the length of the short axis of crystal grains of the austenite phase.
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
F16J 15/08 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
66.
SLAG FOAMING SUPPRESSION METHOD AND CONVERTER REFINING METHOD
[Problem] To accurately estimate the phosphorus concentration in molten steel during a decarburization treatment. [Solution] The present invention provides a method for estimating the phosphorus concentration in molten steel during a decarburization treatment by a converter when not carrying out a dephosphorization treatment prior to the decarburization treatment or when carrying out dephosphorization treatment using different equipment from the converter used in the decarburization treatment. The method includes: an exhaust gas data acquisition step of acquiring exhaust gas components and an exhaust gas flow rate; a molten steel data acquisition step of acquiring the molten steel temperature and carbon concentration of the molten steel by means of sub-lance measurement; and a phosphorus concentration estimation step of calculating a dephosphorization rate constant using data pertaining to decarburization oxygen efficiency obtained on the basis of the exhaust gas components and the exhaust gas flow rate, data pertaining to the exhaust gas components, the exhaust gas flow rate, the molten steel temperature, and the carbon concentration, and operation conditions pertaining to the decarburization treatment, and using the calculated dephosphorization rate constant and the phosphorus concentration in the molten steel at the start of the decarburization treatment to estimate the phosphorus concentration in molten steel after the sub-lance measurement.
This method for setting a rolling mill having at least four stages each provided with a plurality of rolls including at least a pair of work rolls and a pair of back-up rolls supporting the work rolls includes: before adjustment of a reduction position zero point or before the start of rolling, a thrust reaction force measuring step of measuring a thrust reaction force in a roll body length direction acting at least on a roll other than the back-up rolls, taking any one roll from among the rolls aligned in the reduction direction as a reference roll; and a roll chock position adjusting step of adjusting the position of a roll chock by moving the roll chock of a roll other than the reference roll in the rolling direction of the rolling stock, with the rolling direction position of the roll chock of the reference roll fixed as a reference position, in such a way that the measured thrust reaction force lies within a permissible range.
B21B 13/14 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load
B21B 37/00 - Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
This manufacturing method includes: a first preparatory shaping step of obtaining an initial rough forging from a billet; a second preparatory shaping step of obtaining a final rough forging from the initial rough forging; and a finish forging step of shaping the final rough forging to the finished dimensions of the forged crankshaft by means of at least one die forging. In the first preparatory shaping step, a part that is to become a second pin portion is decentered while a plurality of flat portions are formed. The second preparatory shaping step includes: a step of using a pair of second dies to depress parts that are to become a plurality of journal portions, with the width direction of the flat portions arranged in the depressing direction; and a step of using a third die, after the depression using the second dies has begun, to decenter a part that is to become a first pin portion, disposed in a first position, and a part that is to become a third pin portion, disposed in a third position, in mutually opposite directions, with the width direction of the flat portions arranged in the decentering direction.
This manufacturing method includes: a first preparatory shaping step of obtaining an initial rough forging from a billet; a second preparatory shaping step of obtaining a final rough forging from the initial rough forging; and a finish forging step of shaping the final rough forging to the finished dimensions of the forged crankshaft by means of at least one die forging. In the first preparatory shaping step, a plurality of flat portions are formed by depressing pin-corresponding portions and journal-corresponding portions from a direction perpendicular to the axial direction of the billet. The second preparatory shaping step includes: a step of using a pair of first dies to depress parts that are to become a plurality of journal portions, with the width direction of the flat portions arranged in the depressing direction; and a step of using a second die, after the depression using the first dies has begun, to decenter parts that are to become a plurality of pin portions, with the width direction of the flat portions arranged in the decentering direction. In the final rough forging, the thickness of parts that are to become a plurality of crank arm portions is the same as the finished dimension thickness.
000, given a cross section including the center axis of a lance and bisecting a boundary plane between a flow path of a lance inner tube and a nozzle hole, is the length of a line segment which passes through the most downstream point of the lance on the boundary plane and traverses the nozzle hole on a straight line perpendicular to the lance center axis, and L is the length of said traversing line segment when projected within the range of the flow path of the lance inner tube on a horizontal cross section taken perpendicular to the lance center axis.
Provided is a steel material for a carburized bearing component such that excellent toughness, surface-initiated spalling life, and wear resistance are exhibited. The steel material for the carburized bearing component according to the present invention contains, in terms of mass%, C: 0.25-0.45%, Si: 0.15-0.45%, Mn: 0.40-1.50%, P: 0.015% or less, S: 0.005% or less, Cr: 0.60-2.00%, Mo: 0.10-0.35%, V: 0.20-0.40%, Al: 0.005-0.100%, Ca: 0.0002-0.0010%, N: 0.0300% or less, O: 0.0015% or less, and the balance Fe and impurities, and said steel material satisfies expressions (1) through (3). (1) 1.20 < 0.4 Cr + 0.4 Mo + 4.5V < 2.75, (2) A1/A2 > 0.50, and (3) 2.7 C + 0.4 Si + Mn + 0.45 Ni + 0.8 Cr + Mo + V > 2.55, where expression (2) indicates the area ratio of sulfides containing 1 mol% or more of Ca among sulfides having a circle equivalent diameter of 1 μm or larger.
Provided is a vehicular bumper beam that is lightweight and highly strong. A vehicular bumper beam (1) is provided with a first member (2) and a second member (3). The first member (2) includes a first top plate part (5), two first vertical wall parts (6), and two first flange parts (7). The first top plate part (5) is flat in a cross-section perpendicular to the longitudinal direction. The second member (2) includes a second top plate part (4), two second vertical wall parts (8), and two second flange parts (9a, 9b). The second top plate part (4) has a protrusion (20) that protrudes in the direction opposite the first top plate part (5). The two second vertical wall parts (8) are connected to both side portions (4a, 4b) of the second top plate part (4), respectively. The two second vertical wall parts (8) are disposed inside the first member (2) so as to respectively face the first wall parts (6) from a close distance. The two second flange parts (9a, 9b) are connected to the two vertical wall parts (8), respectively, and disposed joined to the first flange parts (7), respectively.
B60R 19/04 - Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section
This lap fillet arc welding joint is provided with: a first steel plate and a second steel plate which overlap each other and each of which has a tensile strength of at least 950 MPa; and a weld metal extending along a corner that is formed by the surface of the first steel plate and an end surface of the second steel plate, wherein when β is the toe angle of the weld metal, NA is the total number of recesses present on the surface of the weld metal within a range of 0.4 mm from a melting boundary, and among such recesses, NB is the number of recesses in contact with ferrite particles having a maximum particle diameter of at least 10 μm, the weld metal satisfies both of the following conditional equations (1) and (2): 0°<β<30°…(1) NB/NA≤0.70…(2) (where, NA is at least 20)
A steel pipe sheet pile (20) includes a steel pipe body (21), and a linking member (22) that extends in the lengthwise direction of the steel pipe body (21). The linking member (22) demarcates a hollow portion (221) that extends in the lengthwise direction, and a slit (222) that extends in the lengthwise direction and forms a boundary plane (222S) between the hollow portion (221) and the outside. At a cross-section perpendicular to the lengthwise direction, the boundary plane (222S) is inclined in relation to a perpendicular line (221E) that is perpendicular to a direction (221D) extending from the center (221C) of the hollow portion (221), through the center of the slit (222), and towards the outside.
A hot rolled steel sheet according to an embodiment of the present invention is configured such that: the hot rolled steel sheet has prescribed chemical components; the metal structure in a center position in the sheet width at 1/4 the depth of sheet thickness is formed of 90% by volume or greater martensite with the remaining structure being 0 – 10% by volume; the remaining structure is either one or both of bainite or ferrite; the average length of crystal grains in direction L is 0.2 – 5.0 µm, the average length of crystal grains in direction C is 0.1 – 5.0 µm, and the ratio of C direction grain lengths, which are the average lengths for the crystal grains in the direction C, to the L direction grain lengths, which are the average length for crystal grains in the direction L, is 0.2 ≤ C direction grain lengths/L direction grain lengths ≤ 5.0; and tensile strength is 1180 MPa or greater.
MAXMINMINMIN or less than 0.04%; and the metal structure has an equivalent circle average crystal grain diameter that is 10 mm or less, and equal to or less than half the thickness, in a central portion along the thickness direction of the titanium block. This titanium block can be produced inexpensively.
The present invention has: an acquisition means that acquires measurement data pertaining to periodic movement of a physical object that performs periodic movements; a determination means that determines a revision coefficient, which is a coefficient in a revised autoregressive model, on the basis of the measurement data acquired by the acquisition means; and a diagnosis unit that diagnoses an abnormality in the physical object on the basis of the revision coefficient determined by the determination means. The revised autoregressive model is a formula for deriving a prediction value of the measurement data on the basis of the measurement data pertaining to the periodic movement of the physical object and the revision coefficient for the measurement data. The determination means determines the revision coefficient on the basis of eigenvalues of an autocorrelation matrix derived from the measurement data, the eigenvalues being derived by performing singular value decomposition on the autocorrelation matrix.
Provided is a zinc hot-dipped steel sheet having a zinc hot-dipped layer on at least one side of the parent material steel sheet, characterized in that: the Fe content of the zinc hot-dipped layer exceeds 0% but does not exceed 3.0%, and Al content exceeds 0% but does not exceed 1.0%; the zinc hot-dipped steel sheet has an Fe-Al alloy layer at the interface between the zinc hot-dipped layer and the parent material steel sheet; the thickness of the Fe-Al alloy layer is 0.1-2.0 µm; the difference between the maximum and minimum values for the thickness of the Fe-Al alloy layer in the width direction of the parent material steel sheet is within 0.5 µm; within the parent material steel sheet there is a refined layer which is in direct contact with the Fe-Al alloy layer; the average thickness of the refined layer is 0.1 µm to 5.0 µm, the average particle size of the ferrite phase within the refined layer is 0.1 µm to 3.0 µm; the refined layer contains or more types of oxides of Si and Mn; the maximum diameter of the oxides is 0.01 µm to 0.4 µm; and the difference between the maximum and minimum values for the thickness of the refined layer in the width direction of the parent material steel sheet is within 2.0 µm.
In the range of 1/8 to 3/8 of the thickness, centering on 1/4 of the thickness, from the surface of a parent material steel sheet, the ferrite phase has a volume fraction of 50% to 97%, the total of hard structures comprising one or more of the bainite phase, bainitic ferrite phase, fresh martensite phase and tempered martensite phase accounts for a volume fraction of at least 3%, retained austenite phase accounts for a volume fraction of 0% to 8%, the total of pearlite phase and coarse cementite phase accounts for a volume fraction of 0% to 8%, and at the interface between the zinc hot-dipped layer and the parent material steel sheet, there is an Fe-Al alloy layer having an average thickness of 0.1 µm to 2.0 µm and a difference between the maximum and minimum thickness in the steel sheet width direction of within 0.5 µm, and in a refined layer which is in direct contact with the Fe-Al alloy layer, the difference between the maximum and minimum thickness of the refined layer in the steel sheet width direction is within 2.0 µm.
In a specific thickness range centering on ¼ of the thickness from the surface of the parent material steel sheet, the ferrite phase has a volume fraction of 0% to less than 50%, the total of hard structures comprising one or more of bainite structure, bainitic ferrite phase, fresh martensite phase and tempered martensite phase has a volume fraction of at least 50%, retained austenite phase has a volume fraction of 0% to 8%, the total of pearlite phase and coarse cementite phase has a volume fraction of 0% to 8%, and at the interface between the plated layer and the parent material steel sheet, there is an Fe-Al alloy layer having an average thickness of 0.1-2.0 µm, and a difference between the maximum thickness and minimum thickness in the steel plate width direction of within 0.5 µm. In a refined layer which is in direct contact with the Fe-Al alloy layer, the difference between the maximum thickness and minimum thickness of the refined layer in the width direction of the steel plate is within 2.0 µm.
33 phase having a Si content of 0-5.0 at% and a δ phase having a Si content of 0-5.0 at%; one or two selected from the group consisting of an ε phase having a Si content of 0-5.0 at% and an η' phase having a Si content of 0-5.0 at%; and a SiOx phase (x = 0.50 to 1.70). The alloy particles exhibit a peak having the greatest integrated diffraction intensity at a diffraction angle 2θ in the range of 42.0-44.0 degrees in an X-ray diffraction profile. The half-width of the peak is 0.15-2.5 degrees.
Provided is a non-oriented electromagnetic steel plate that contains, in the chemical composition thereof in terms of % by mass, 0.0015%-0.0040% C, 3.5%-4.5% Si, 0.65% or less Al, 0.2%-2.0% Mn, 0%-0.20% Sn, 0%-0.20% Sb, 0.005%-0.150% P, 0.0001%-0.0030% S, 0.0030% or less Ti, 0.0050% or less Nb, 0.0030% or less Zr, 0.030% or less Mo, 0.0030% or less V, 0.0010%-0.0030% N, 0.0010%-0.0500% O, less than 0.10% Cu, and less than 0.50% Ni, wherein the remnant consists of Fe and impurities, the product plate thickness is 0.10 mm-0.30 mm, the average crystal grain size is 10 μm-40 μm, the iron loss W10/800 is 50 W/kg or less, the tensile strength is 580 MPa-700 MPa, and the yield ratio is 0.82 or greater.
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
H01F 1/147 - Alloys characterised by their composition
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
Provided are: a raceway member that is used for a bearing that rotatably supports a rotary shaft rotating about the axial line thereof, and that is characterized by being provided with, on a raceway surface, a layer containing diamond-like carbon in which the proportion of diamond bonds is at least 70%; and a bearing that rotatably supports a rotary shaft rotating about the axial line, and that is characterized by being provided with a first raceway member having a first raceway formed coaxially with the axial line, a second raceway member having a second raceway formed coaxially with the axial line, and a plurality of rolling elements that are disposed between the first raceway and the second raceway, and that are capable of rolling along the first raceway and the second raceway, wherein a layer containing diamond-like carbon in which the proportion of diamond bonds is at least 70% is provided on the raceway surface of the first raceway and/or the second raceway.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 19/10 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
This method for manufacturing a steel H-beam comprises a rough rolling step, an intermediate rolling step, and a finishing rolling step. A rolling machine that performs the rough rolling step is provided with a plurality of grooves that shape a to-be-rolled material. The plurality of grooves include: one or a plurality of dividing grooves in which protrusions are formed that cause a divided part to be formed in an end portion of the to-be-rolled material by forming a cut in a direction perpendicular to the width direction of the to-be-rolled material; and a plurality of bending grooves in which protrusions are formed that contact the cut and sequentially bend the divided part formed at the dividing groove. The protrusion formed in a final dividing groove among the dividing grooves is constituted by a tapered tip part having a prescribed tip angle and a base part located at the base of the tip part and having a tapered shape with a gentler slope than the tip part.
B21B 1/08 - 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 work of special cross-section, e.g. angle steel
This oriented electromagnetic steel plate is provided with a base material steel sheet, an intermediate layer arranged in contact with the base material steel sheet, and an insulating film arranged in contact with the intermediate layer so as to become the topmost surface. Viewed on a cut surface in which the cutting direction is parallel to the plate thickness direction, the intermediate layer has selective oxidation regions, and the thickness of the intermediate layer in the regions where selective oxidation regions are present is greater than or equal to 50 nm, and the thickness of the intermediate layer in regions where selective oxidation regions are not present is less than 50 nm.
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
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
This oriented electromagnetic steel sheet has: a base metal steel sheet; a middle layer disposed over and in contact with the base metal steel sheet; and an insulation film disposed over and in contact with the middle layer and serving as the top surface layer. The insulation film has an average Cr concentration of 0.1 at% or higher. In a cross section of the steel sheet, where the cutting direction is parallel to the direction of thickness, a compound layer having crystalline phosphide is observed in the region where the insulation film is in contact with the top of the middle layer.
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
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
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
This oriented electromagnetic steel plate comprises a steel plate and an amorphous oxide film formed on the steel plate. As the chemical composition, the steel plate contains, in mass %, less than or equal to 0.085% C, 0.80-7.00% Si, less than or equal to 1.50% Mn, less than or equal to 0.065% acid soluble Al, less than or equal to 0.013% S, 0-0.80% Cu, 0-0.012% N, 0-0.50% P, 0-1.00% Ni, 0-0.30% Sn and 0-0.30% Sb, the remainder consisting of Fe and impurities, and the NSIC value of the surface, which is the value obtained by measuring the image clarity of the surface with an image clarity measurement device, is greater than or equal to 4.0%.
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
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
This oriented electromagnetic steel plate is provided with a base material steel sheet, an intermediate layer arranged in contact with the base material steel sheet, and an insulating film arranged in contact with the intermediate layer so as to become the topmost surface. Viewed on a cut surface in which the cutting direction is parallel to the plate thickness direction, the insulating film has a crystalline phosphide-containing layer that contains crystalline phosphides in a region in contact with the intermediate layer.
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
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
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
This internal combustion engine piston comprises: a steel first member; and an aluminum alloy second member that is bonded to the first member via an annular bonding layer. The bonding layer is 1.0–20.0 μm thick on both the inner circumferential side and the outer circumferential side thereof.
B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
F16J 1/01 - PistonsTrunk pistonsPlungers characterised by the use of particular materials
91.
ORIENTED ELECTROMAGNETIC STEEL SHEET, AND MANUFACTURING METHOD OF ORIENTED ELECTROMAGNETIC STEEL SHEET
This oriented electromagnetic steel sheet comprises a steel sheet 1, an intermediate layer 4 arranged on the steel sheet and containing Si and O, and an insulation film 3 arranged on the intermediate layer, wherein the intermediate layer 4 contains metal phosphide 5, the thickness of the intermediate layer 4 is greater than or equal to 4 nm, and, in a cross-section of the intermediate layer 4, the amount of the metal phosphide 5 is 1-30% in cross-sectional area percentage.
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
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
2and a tension insulating film formed on the oxide film. As chemical components, the base material steel sheet contains, by mass percent, less than or equal to 0.085% C, 0.80-7.00% Si, less than or equal to 1.00% Mn, less than or equal to 0.065% acid soluble Al, and less than or equal to 0.050% of the Seq represented by S+0.406*Se, the remainder consisting of Fe and unavoidable impurities. Regarding the FWHMs, i.e., the half-value widths of the peaks of cristobalite-type aluminum phosphate obtained by X-ray diffraction, (i) the half-value width (FWHM-Co) of the peak appearing at 2θ = 24.8° when using a Co-Kα excitation source is less than or equal to 2.5 degrees, or, (ii) the half-value width (FWHM-Cu) of the peak appearing at 2θ = 21.3° when using a Cu-Kα excitation source is less than or equal to 2.1 degrees.
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
22, and a tension insulation film formed on the oxide film. As the chemical composition, the steel plate contains, in mass %, less than or equal to 0.085% C, 0.80-7.00% Si, less than or equal to 1.00% Mn, less than or equal to 0.065% acid soluble Al, less than or equal to 0.013% S, 0-0.80% Cu, 0-0.012% N, 0-0.50% P, 0-1.00% Ni, 0-0.30% Sn and 0-0.30% Sb, the remainder consisting of Fe and impurities, wherein the tension insulation film contains a chrome compound, and the amount of Fe in the oxide film and the tension insulation film is 70-250mg/m2.
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
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
The hot-rolled steel sheet according to one embodiment of the present invention is configured such that: the steel sheet has a prescribed chemical composition; at a depth position 1/4 of the sheet thickness from the surface, the area ratio of ferrite is 10–55%; the total area ratio of bainite and martensite is 45–90%; the total area ratio of the ferrite, the bainite and the martensite is at least 90%; and the average crystal grain diameter is 12.0 µm or less. In the texture measured at a section that is central in the sheet thickness direction, the maximum pole density in the {100} <011>, {211} <011>, {311} <011>, {110} <011>, and {332} <113> orientation groups is 8.0 or less and the total pole density of {211} <011> and {332} <113> is 10.0 or less, and the tensile strength is at least 950 MPa.
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
95.
STEELMAKING SLAG FOR USE AS FERTILIZER STARTING MATERIAL, METHOD FOR PRODUCING STEELMAKING SLAG FOR USE AS FERTILIZER STARTING MATERIAL, METHOD FOR PRODUCING FERTILIZER, AND FERTILIZATION METHOD
STEELMAKING SLAG FOR USE AS FERTILIZER STARTING MATERIAL, METHOD FOR PRODUCING STEELMAKING SLAG FOR USE AS FERTILIZER STARTING MATERIAL, METHOD FOR PRODUCING FERTILIZER, AND FERTILIZATION METHOD
2522325255 is at least 50%, the proportion of soluble MnO in the MnO is at least 80%, the slag basicity is greater than 1.5 and no greater than 2.2, and the bulk specific gravity is 1.9-2.8, inclusive.
A high-strength steel wire comprising a predetermined material composition, wherein: in a cross-section including a central axis of the steel wire and parallel to the central axis, the area ratio of pearlite structures in the steel wire is 90% or greater, the area ratio of pearlite structures in a surface layer part of the steel wire is 80% or greater, and from among the structures over the whole of the steel wire, the area ratio of lamellar pearlite structures with an average cementite length of 1.0 µm or larger is 30% to 65%, and the area ratio of fragmented pearlite structures with an average cementite length of 0.30 µm or smaller is 20% to 50%; and the steel wire has a tensile strength of 1,960 MPa or greater.
NIPPON STEEL CHEMICAL & MATERIAL CO. ,LTD. (Japan)
Inventor
Iijima, Takashi
Tadokoro, Kenichiro
Hiyoshi, Masataka
Furukawa, Shinya
Komura, Tomoko
Mizuuchi, Kazuhiko
Abstract
A solid polymer-type fuel cell catalyst carrier which satisfies the following requirements (A), (B), (C), and (D), a method for manufacturing the same, a catalyst layer for a solid polymer-type fuel cell, and a fuel cell. (A) The specific surface area according to a BET analysis of a nitrogen adsorption isotherm is 450 to 1500 m200.47-0.9close00 at which the hysteresis loop is closed is more than 0.47 to 0.70. (D) The half-value width of G-band detected in a range of 1500 to 1700 cm-1according to Raman spectrometry is 45 to 75 cm-1.
A steel sheet according to one embodiment has a prescribed chemical composition. The indicator Q determined from formula (1) is 0.00 or more. The carbon equivalent amount Ceq (%) determined from formula (2) is less than 0.800%. The ratio of the difference between the surface hardness and the hardness in the center in the sheet thickness direction relative to the surface hardness at room temperature is 15.0% or less. The surface hardness at room temperature is a Vickers hardness of 400 or more, and the sheet thickness is 40 mm or more. Formula (1): Q=0.18-1.3(logT)+0.75(2.7×[C]+[Mn]+0.45×[Ni]+0.8×[Cr]+2×[Mo]) Formula (2): Ceq(%)=[C]+[Mn]/6+[Si]/24+[Ni]/40+[Cr]/5+[Mo]/4+[V]/4
Provided is a high-strength steel member which has a predetermined chemical composition, and a tensile strength of at least 1000 Mpa, and which contains: at least 0.10% by area of at least one Ti precipitate which has an average circle equivalent diameter of 30-200 nm at a position of 1 mm deep from the surface of the steel member, and is selected from the group consisting of Ti carbides, Ti nitrides and composite compounds thereof; and at least 0.5 mass ppm of non-diffusible hydrogen, in hydrogen temperature-programmed desorption analysis, released in a temperature range of 400-800°C.
