A plated steel sheet for hot press forming with improved hydrogen delayed fracture properties is disclosed. The disclosed plated steel sheet includes a base steel sheet, and a plating layer formed on a surface of the base steel sheet and including, by weight, Si: 5.0 to 15.0%, Zn: 10.0 to 30.0%, Fe: 4.0 to 12.0%, and the remainder including Al and unavoidable impurities.
B21D 22/02 - Stamping using rigid devices or tools
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
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
B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
C21D 1/18 - HardeningQuenching with or without subsequent tempering
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
C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
2.
AUSTENITIC STAINLESS STEEL HAVING EXCELLENT LOW-TEMPERATURE IMPACT TOUGHNESS AND METHOD FOR MANUFACTURING SAME
According to an embodiment of the present invention, an austenitic stainless steel comprising, in weight percentage, C: 0.03% or less (excluding 0), N: 0.15 to 0.25%, Si: 1.0% or less (excluding 0), Mn: 3.3 to 7.5%, Cr: 17.0 to 22.0%, Ni: 6.5 to 9.5%, Cu: 1.2% or less (excluding 0), Mo: 0.8% or less (excluding 0), and the balance being Fe and inevitable impurities, wherein the austenitic stainless steel satisfies formula (1): 70≤(100−ASP)/(Ni/Mn)≤170, and the Charpy impact energy at −196° C. is 120 J or more (where ASP represents the austenite phase stability and ASP is calculated by 551−462(C+N)−9.2Si−8.1Mn−13.7Cr−29 (Ni+Cu)−18.5Mo (Ni and Mn represent the weight percentages of respective elements thereof).
To this end, an aspect of the present invention provides a thermal fusion device comprising: a first plate; a second plate disposed to face the first plate with a laminate interposed therebetween; a pressing block disposed opposite the laminate with at least one of the first plate and the second plate interposed therebetween; and a connector for fastening the first plate, the second plate, and the pressing block. The coefficient of linear expansion of the pressing block is greater than the coefficient of linear expansion of the laminate.
B32B 37/10 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using direct action of vacuum or fluid pressure
B32B 37/04 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
B32B 37/06 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
The present invention relates to a wire rod and a method for manufacturing same and, more specifically, to a wire rod and a method for manufacturing same, the wire rod containing, in wt%, 0.600-1.000% of carbon (C), 1.500-1.990% of silicon (Si), 0.100-0.600% of manganese (Mn), 0.010-0.150% of sulfur (S), 0.005-0.020% of titanium (Ti), 0.003-0.015% of nitrogen (N), 0.005-0.050% of chromium (Cr), 0.005-0.050% of molybdenum (Mo), 0.005-0.150% of nickel (Ni), 0.005-0.150% of copper (Cu), 0.005-0.100% of aluminum (Al), and 0.005-0.050% of phosphorus (P), with the remainder comprising Fe and other impurities, and having a microstructure including graphite grains and ferrite.
C21D 8/06 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
C21D 9/573 - Continuous furnaces for strip or wire with cooling
5.
HOT PRESS FORMED MEMBER AND METHOD FOR MANUFACTURING SAME
The present invention provides a hot press formed member, particularly a hot press formed member obtained from a non-plated steel sheet, and a method for manufacturing same.
A steel wire according to one embodiment of the present invention can be a high-strength and high-corrosion-resistant steel wire comprising, by wt%, 0.50-0.75% of carbon (C), 0.5-0.9% of manganese (Mn), 0.2-0.5% of silicon (Si), 0.03-0.18% of molybdenum (Mo), and the balance of iron (Fe) and inevitable impurities, wherein an average diameter of a pearlite block of the steel wire is 25 μm or less, and a carbon content of cementite in pearlite is 18 at% or higher.
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
C21D 8/06 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
7.
COMPOSITION FOR SURFACE TREATING COLD-ROLLED STEEL SHEET, COLD-ROLLED STEEL SHEET SURFACE-TREATED USING SAME, AND MANUFACTURING METHOD THEREFOR
The present invention relates to a composition for surface treating a steel sheet and, more specifically, to a composition for surface treating a cold-rolled steel sheet, a cold-rolled steel sheet surface-treated using the composition, and a manufacturing method therefor.
C09K 3/18 - Materials not provided for elsewhere for application to surface to minimize adherence of ice, mist or water theretoThawing or antifreeze materials for application to surfaces
One aspect of the present invention is to provide an apparatus and a method capable of effectively reducing welding residual stress without going through multiple post-welding processing steps after a weld is formed.
B23K 31/00 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups
B23K 37/003 - Cooling means for welding or cutting
The present invention relates to a material applied to vehicle members and, more specifically, to a cold-rolled steel sheet and a plated steel sheet, having highly excellent bending properties, and method for manufacturing same.
A zinc-based plated steel sheet having excellent room-temperature aging resistance and bake hardenability. The zinc-based plated steel sheet includes: a base steel sheet and a zinc-based plated layer formed on a surface of the base steel sheet. The base steel sheet includes, by weight percentage (wt %), carbon (C): 0.005% or less (excluding 0%), manganese (Mn): 0.1 to 1.0%, silicon (Si): 0.3% or less (excluding 0%), phosphorous (P): 0.01 to 0.08%, sulfur(S): 0.01% or less, nitrogen (N): 0.01% or less, soluble aluminum (sol.Al): 0.01 to 0.06%, niobium (Nb): 0.002 to 0.02%, boron (B): 0.001 to 0.004% (excluding 0.001%), and a balance of iron (Fe) and unavoidable impurities. CS of Relational Expression 1 below satisfies a range of 0.0002% to 0.002%, Relational Expression 1: CS=[C]−(12/93)*[Nb] where [C] and [Nb] of Relational Expression 1 refer to contents (wt %) of C and Nb of the base steel sheet, respectively.
A flash-butt joining member and welding method are provided. In the joining member and the welding method with excellent workability, the joining member having excellent workability includes a joint obtained by flash-butt welding a steel plate, and an average effective grain size difference between the coarse-grained heat-affected zone and a fine-grained heat-affected zone formed on either left or right side of the joint is within 10 μm.
A soft magnetic steel wire rod is provided, which comprises, in weight%, 0.0001 to 0.0300% of C, 0.001 to 3.000% of Si, 0.001 to 0.500% of Mn, 0.001 to 0.100% of Al, 0.0001 to 0.0100% of P, 0.0001 to 0.0100% of S, 0.0001 to 0.0100% of N, and the remainder being Fe and other inevitable impurities, wherein, after the soft magnetic steel wire rod is drawn at room temperature at a reduction ratio of 59% to 93%, the number density of shear bands of the steel wire is 11.4/mm2 or more.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/573 - Continuous furnaces for strip or wire with cooling
B21C 37/04 - Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided forManufacture of tubes of special shape of rods or wire
14.
CONSTRAINED-TYPE VIBRATION-DAMPING METAL SHEET HAVING FOAM PORES AND METHOD FOR MANUFACTURING SAME
Provided are a constrained-type vibration-damping metal sheet having foam pores and a method for manufacturing same. The constrained-type vibration-damping metal sheet of the present invention comprises: a lower metal sheet; a foam resin film bonded to the lower metal sheet; and an upper metal sheet bonded to the foam resin film, wherein the foam resin film has foam pores comprising, by wt % of itself, 85-95% of a thermoplastic polyethylene resin having a number average molecular weight of 8000-12000, 0.1-1% of stearic acid, 1-5% of a styrene-ethylene-butadiene-styrene (SEBS) resin, 0.5-5% of a foaming agent, 1-4% of a dicumyl peroxide crosslinking agent, and 0.5-2% of ZnO foaming aid.
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
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
B32B 15/085 - 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 polyolefins
B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
B32B 37/10 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using direct action of vacuum or fluid pressure
15.
NON-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF
The present invention relates to a non-oriented electrical steel sheet used as a material for an iron core material of an electric power machine and, more specifically, to a non-oriented electrical steel sheet having excellent surface properties and electromagnetic properties, and a manufacturing method thereof.
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
The present invention provides a side member for a vehicle, which can increase energy absorption capacity by inducing a stable crushing shape and at the same time has a structure with high mass producibility, the side member comprising: a first tubular shape portion which extends in the lengthwise direction and has a hexagonal cross-sectional shape; a second tubular shape portion which is connected to the first tubular shape portion, extends in the lengthwise direction, and has a hexagonal cross-sectional shape; and welding portions which are formed on the outer walls of the first tubular shape portion and the second tubular shape portion, wherein the first tubular shape portion and the second tubular shape portion are integrally formed by bending a single first plate.
B21C 37/08 - Making tubes with welded or soldered seams
B21D 39/04 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of tubes with tubesApplication of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of tubes with rods
B21D 5/01 - Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
B60R 25/02 - Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism
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
17.
METHOD FOR MANUFACTURING HIGH-CHROMIUM (CR) MOLTEN STEEL, METHOD FOR MANUFACTURING CAST PIECE, AND METHOD FOR MANUFACTURING PRESS ROLL
An embodiment of the present invention relates to a method for manufacturing high-chromium (Cr) molten steel having a chromium (Cr) content of 4.5 wt % to 5.5 wt %, and the method may comprise the operations of: inserting molten steel into a steel converter used in the process of manufacturing stainless steel; and inputting chromium (Cr)-containing chromium steel alloy into the steel converter such that the content of chromium (Cr) in the molten steel reaches 4.5 wt % to 5.5 wt %. Therefore, according to the embodiments of the present invention, high-chromium (Cr) molten steel can be manufactured by using a steel converter that is used in the steelmaking process of other steel types, without contaminating same.
mm) measured using the selected sensing member. Therefore, according to embodiments of the present invention, it is possible to suppress or prevent the flow of the molten steel melt surface from becoming unstable.
An method of manufacturing a hot press-formed member comprises heating a blank of an aluminum-based plated steel sheet in a heating furnace, removing the heated blank from the heating furnace and conveying the removed blank between an upper mold portion and a lower mold portion of a mold, mounted on a press, to be seated; and performing a forming process after the upper mold portion of the mold is in contact with the seated blank.
The present invention relates to a cold rolled steel sheet for hot-press forming, a hot-press-formed member, and a method for manufacturing same and, more specifically, to a cold rolled steel sheet for hot-press forming, having excellent surface quality, a hot-press-formed member, and a method for manufacturing same.
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
C21D 9/48 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals deep-drawing sheets
The present invention provides a coating film composition and a coated metal plate using same, the coating film composition comprising: a polymer resin; foaming capsules; a plasticizer; and silica, wherein the coating film composition comprises, with respect to 100 parts by weight of the polymer resin, 0.1-10 parts by weight of the foaming capsules; 5-40 parts by weight of the plasticizer; and 1-10 parts by weight of the silica, the foaming capsules are in the form of foaming capsules containing a foaming agent in a thermoplastic plastic cell structure, and the weight ratio of the foaming capsules to the silica is 1:1-1:10.
Embodiments of the present invention relate to a cover device which can open/close the opening of a ladle capable of accommodating molten steel, and which may comprise: a cover member which can be supported on or separated from the ladle such that the opening of the ladle can be opened and closed; and a protruding member extending downward from the lower surface of the cover member so as to be immersed in a slag layer floating on the molten steel. Therefore, according to embodiments of the present invention, an operation of destroying a solidified slag layer prior to a refining operation can be omitted. In addition, even if the operation of destroying the solidified slag layer is performed as necessary, the solidified slag layer can be more easily and more quickly destroyed than that destroyed by a conventional device. Therefore, refining operation time is shortened.
According to the present disclosure, an asymmetric rolling apparatus comprises: a small-diameter work roll that comes in contact with one surface of a material to be rolled; and a large-diameter work roll that comes in contact with the other surface of the material to be rolled and has a diameter larger than that of the small-diameter work roll, wherein the centers of the small-diameter work roll and the large-diameter work roll are arranged to be offset from each other. The small-diameter work roll is disposed such that the center thereof is eccentric from the center of the large-diameter work roll, so as to apply maximum shear deformation during rolling, thereby enabling productivity to be ensured.
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
According to the present disclosure, an asymmetric rolling apparatus comprises: a small-diameter work roll that comes into contact with one surface of a material to be rolled; and a large-diameter work roll that comes into contact with the other surface of the material to be rolled and has a larger diameter than the small-diameter work roll. The diameter of the small-diameter work roll is within 70-90 mm, and the diameter of the large-diameter work roll is within 2-5 times the diameter of the small-diameter work roll.
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
Provided is an unconstrained vibration damping metal sheet with foam pores. The unconstrained vibration damping metal sheet of the present invention comprises: a metal sheet; an organic-inorganic pretreatment layer containing an acrylic resin formed on the metal sheet; and a foam resin layer formed on the pretreatment layer, the foam resin layer containing, based on weight: thereof, a thermoplastic polyvinyl chloride resin: 40-80%, a plasticizer: 5-40%, a foaming agent: 0.1-10%, an oxide-based crosslinker: 1-4%, and spherical silica: 1-10%.
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
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
C08J 9/10 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen
A gas shield arc weld metal is provided. The present invention relates to a weld metal, obtained by gas shield arc welding a weld base material, which comprises, by wt %: 0.001 to 0.30% of C; 0.25% or less of Si (excluding 0%); 0.50 to 3.00% of Mn; 0.030% or less of P (excluding 0%); 0.030% or less of S (excluding 0%); 0.50% or less of Cr (excluding 0%); 0.60% or less of Mo (excluding 0%); less than 0.07% of Al (excluding 0%); 0.40% or less of Ni (excluding 0%); 0.50% or less of Cu (excluding 0%); less than 0.07% of Ti (excluding 0%); and the balance of Fe and other unavoidable impurities, the metal satisfying relational expression 1 and relational expression 2.
The present disclosure provides a method of recycling a waste battery, the method including: introducing and charging waste battery raw materials; heating the introduced and charged waste battery raw materials; cooling the heat-treated products; and discharging the cooled reactants, wherein in the introducing and charging of the waste battery raw materials, a weight ratio of carbon/nickel in the charged raw materials is 20 wt % or more.
The present invention relates to an iron core for a transformer having low no-load loss and a method for manufacturing same. According to an embodiment of the present invention, the iron core for a transformer comprises: a first stacking unit formed by stacking a plurality of electrical steel sheets in a first direction and positioned to form a continuous surface in a second direction intersecting the first direction; and a second stacking unit formed by stacking a plurality of electrical steel sheets in the first direction and positioned to form a continuous surface in a third direction intersecting the first direction and the second direction, wherein a coupling unit in which the first stacking unit and the second stacking unit are connected includes a stepped portion formed at a first end, which is an end of the electrical steel sheet included in the first stacking unit, and an accommodation unit in which a second end, which is an end of the electrical steel sheet included in the second stacking unit, is shape-coupled to the stepped portion, and the electrical steel sheets included in the first stacking unit and the second stacking unit are stacked in a step lap manner in the first direction.
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 27/26 - Fastening parts of the core togetherFastening or mounting the core on casing or support
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
29.
LOW THERMAL EXPANSION STEEL AND METHOD FOR MANUFACTURING SAME
A low thermal expansion steel according to an embodiment of the present invention comprises, in weight %, C: 0.000% (exclusive) to 0.040% (inclusive), Si: 0.080% to 0.200% (both inclusive), Mn: 0.150% to 0.450% (both inclusive), P: 0.000% (exclusive) to 0.0030% (inclusive), S: 0.0000% (exclusive) to 0.0030% (inclusive), Cr: 0.00% (exclusive) to 2.00% (inclusive), Ni: 34.0% to 39.0% (both inclusive), Co: 0.000% (exclusive) to 0.400% (inclusive), with the balance being Fe and inevitable impurities, and satisfies the value of formula (1) 0.5×[Cr] − [Ni] − 2.7×[Mn] − 4×[Co] + 40 ranging from 0.00 to 4.00 (both inclusive).
The present invention relates to an iron core for a transformer having low no-load loss and a manufacturing method thereof. The iron core for a transformer according to an embodiment of the present invention includes a core subpart in which multiple steel sheets are stacked and which includes a through-hole penetrating in a stacking direction, wherein a direction intersecting the stacking direction is defined as a first direction and a direction intersecting the stacking direction and the first direction is defined as a second direction, and a ratio (D/W) of a diameter (D) to a width (W) of the through-hole is 0.02 to 0.20 under the assumption that a shorter length is defined as a width (W) when comparing a length in the first direction and a length in the second direction in the core subpart.
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 27/26 - Fastening parts of the core togetherFastening or mounting the core on casing or support
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
31.
ELECTROGALVANIZED STEEL SHEET HAVING SUPERB WHITENESS AND METHOD FOR MANUFACTURING SAME
The present invention provides an electrogalvanized steel sheet and a method manufacturing same, the electrogalvanized steel sheet having superb whiteness, and an attractive exterior surface due to reduction in surface scale.
The present invention relates to a plated steel sheet for hot press forming, a hot press formed part, and manufacturing methods thereof and, more specifically, a plated steel sheet for hot press forming having excellent impact resistance, a hot press formed part, and manufacturing methods thereof.
A tube for a transportation system is disclosed. The tube for a transportation system according to one embodiment comprises a plurality of segments disposed along the circumference of a traveling path of a traveling body and connected to each other to form a traveling space in which the traveling body can travel, wherein each of the segments comprises: a segmented panel surrounding the circumference of the traveling space on a cross section orthogonal to the traveling path; and a reinforcing member including a first reinforcing part extending from the segmented panel toward the traveling space and a second reinforcing part extending from the first reinforcing part in a direction intersecting the extension direction of the first reinforcing part.
A tube for a transportation system, according to the present disclosure, comprises: a first pipe having a first cut portion of which the width in the vertical direction perpendicular to the lengthwise direction is gradually reduced along the lengthwise direction; and a second pipe having a second cut portion having a shape corresponding to the first cut portion. The first pipe and the second pipe are coupled such that the first cut portion and the second cut portion face each other.
Embodiments of the present disclosure relate to a nozzle engagement device and method in which image information having a preset range of wavelength blocked is received using one or more cameras, a first nozzle and a second nozzle are identified on the basis of the image information, position information of the first nozzle and position information of the second nozzle are calculated on the basis of the image information, position difference information is calculated on the basis of the position information of the first nozzle and the position information of the second nozzle, whether the position difference information satisfies a preset criterion is determined, and either the first nozzle or the second nozzle is moved or the first nozzle and the second nozzle are engaged on the basis of the position difference information according to whether the position difference information satisfies the preset criterion.
Provided is a method for manufacturing an ultra high-strength and high-ductility steel sheet having an excellent yield ratio. The method includes: heating a slab in a temperature range of 1050 to 1300° C.; finish hot rolling the heated slab in a temperature range of 800° C. to 1000° C.; winding the hot-rolled steel sheet in a temperature range of 50° C. to 750° C.; cold rolling the wound hot-rolled steel sheet at a reduction rate of 15% or higher after pickling; and annealing the cold-rolled steel sheet in a temperature range of 600° C. to 720° C. for 10 sec to 3,600 sec, or annealing in a temperature range of higher than 720° C. and 900° C. or lower for 10 sec to 3,600 sec and cooling, followed by a second annealing in a temperature range of 480° C. to 700° C. for 10 sec to 3,600 sec.
The present invention relates to a hot formed part for use in components such as automotive structural members and reinforcements, and to a manufacturing method thereof.
A high strength steel plate according to an aspect of the present disclosure includes, by weight: 0.05 to 0.20% of C, 0.15 to 0.55% of Si, 0.9 to 1.75% of Mn, 0.001 to 0.05% of Al, 0.03% or less of P, 0.03% or less of S, 0.05 to 0.3% of Cr, 0.05 to 0.6% of Ni, 0.005 to 0.35% of Cu, 0.05 to 0.2% of Mo, 0.005 to 0.07% of V, 0.005 to 0.04% of Nb, 0.0005 to 0.005% of Ca, 0.005 to 0.025% of Ti, 0.002 to 0.006% of N, less than 0.0005% of B, and a balance of Fe, with inevitable impurities, satisfies relationships of Cu+Ni+Cr+Mo: 1.5% or less, Cr+Mo: 0.4% or less, V+Nb: 0.1% or less, and Ca/S: 1.0 or higher, and includes a combined structure of tempered martensite and tempered bainite as a microstructure.
Provided are a device and a method for detecting an anomaly of an electrode rod through the steps of: collecting time series data from a plurality of sensors used for process monitoring of an electric furnace; reconstructing input time series data of a predetermined size by using a reconstruction-based artificial neural network model; calculating a reconstruction error between the input time series data and the reconstructed time series data; and determining, on the basis of the reconstruction error, whether the electrode rod is damaged.
F27B 3/28 - Arrangement of controlling, monitoring, alarm or like devices
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
The present disclosure relates to a zinc-based coated steel material having excellent corrosion resistance and spot weldability and, more particularly, to a zinc-based coated steel material plated with a multilayer zinc alloy, which has two or more layers, and having excellent corrosion resistance and spot weldability. A zinc-based coated steel material according to an aspect of the present disclosure includes: a base steel; and a multilayer zinc-based plating layer composed of two or more discriminated plating layers, in which the multilayer zinc-based plating layer may include Mg of 0.12˜0.64 percent by weight.
A sub material feeding device of an electric furnace and an electric furnace having same are disclosed. The sub material feeding device of an electric furnace, according to one embodiment, comprises: a chute that supplies sub material to a sub material input port provided in a roof of an electric furnace body from above the sub material input port; and a sub material feeder that supplies the sub material to the chute from above the chute, wherein the chute includes: an upper inlet that receives the sub material from the sub material feeder; a lower outlet that supplies the sub material to the sub material input port; and a connecting portion that connects and provides communication between the inlet and the outlet, wherein the outlet is configured to be ventilated in a vertical direction, and the connecting portion communicates with the outlet through a side surface of the outlet and is provided with an injection port for injecting air downward, wherein the injection port may include a first injection port disposed in an upper region of the connecting portion.
A method for monitoring a condition of a blast furnace, according to an embodiment, comprises the steps of: obtaining real-time acoustic data of an electric furnace from an acoustic sensor arranged adjacent to the electric furnace; generating a frequency image obtained by imaging the acoustic data by performing frequency time series analysis on the obtained acoustic data; extracting an acoustic pattern corresponding to a dissolution state of the electric furnace on the basis of the frequency image by using an artificial intelligence-based autoencoder; and generating an acoustic feature map from the acoustic pattern, the acoustic feature map obtained by visualizing the acoustic pattern in time series.
The present invention relates to an iron core of a transformer in which no-load loss is low. The iron core of a transformer comprises core sub-parts in which a plurality of steel sheets are stacked and which include coupling holes that pass through in the stacking direction, wherein the number of the coupling holes is two or less. A plurality of the core subparts are disposed in a direction crossing the stacking direction.
A wire rod and a steel wire which are for springs and have excellent corrosion fatigue resistance properties, and a method for producing same. The wire rod and steel wire containing, in wt ¾, 0.40-0.70% of C, 1.20-2.30% of Si, 0.20-0.80% of Mn, 0.20-0.80% of Cr, 0.015% or less of P, 0.015% or less of S, and 0.010% or less of N, with the remainder including Fe and other unavoidable impurities, along with at least one among 0.01-0.20% of V and 0.01-0.10% of Nb, wherein the V and Nb satisfy relational expression 1 below, the average grain size of prior austenite is no greater than 20 μm, and the surface decarburization depth is no greater than 0.1 mm.
A wire rod and a steel wire which are for springs and have excellent corrosion fatigue resistance properties, and a method for producing same. The wire rod and steel wire containing, in wt ¾, 0.40-0.70% of C, 1.20-2.30% of Si, 0.20-0.80% of Mn, 0.20-0.80% of Cr, 0.015% or less of P, 0.015% or less of S, and 0.010% or less of N, with the remainder including Fe and other unavoidable impurities, along with at least one among 0.01-0.20% of V and 0.01-0.10% of Nb, wherein the V and Nb satisfy relational expression 1 below, the average grain size of prior austenite is no greater than 20 μm, and the surface decarburization depth is no greater than 0.1 mm.
[V]+[Nb]□0.08 (where the V and Nb contents are in wt ¾). [Relational expression 1]
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
A non-magnetic austenitic stainless steel according to the present invention comprises, by wt%, 0.01-0.04% of C, Si in an amount of more than 0% and equal to or less than 1.0%, 0.5-1.2% of Mn, 16.0-22.5% of Cr, 9-11.5% of Ni, Mo in an amount of more than 0% and equal to or less than 1%, 0.2-1.5% of Cu, 0.01-0.25% of N, 0.001-0.005% of Ti, B in an amount of more than 0% and equal to or less than 0.003%, Al in an amount of more than 0% and equal to or less than 0.005%, and the balance of Fe and other inevitable impurities, and satisfies relations (1) and (2). Relation (1): 0 < 3×(Cr+Mo)+5×Si-65×(C+N)-2×(Ni+Mn)-28 ≤ 5 Relation (2): 1842+878×C-26.7×Si+1.21×Mn-58.6×Cr+48.1×Ni-63.4×Mo-283×Ti+58.5×Cu-75.4×Al+923×N ≤ 1296 (In relations (1) and (2), C, Si, Mn, Cr, Ni, Mo, Cu, N, Ti and Al represent the wt% of the respective elements.)
06 - Common metals and ores; objects made of metal
12 - Land, air and water vehicles; parts of land vehicles
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Metal pipes and tubes; common metals and their alloys; unwrought or semi-wrought common metals; ores of metal; unwrought or semi-wrought iron; unwrought or semi-wrought steel; steel wire; steel; steel pipes; steel plates and sheets; unwrought or semi-wrought non-ferrous metals; metallic materials exclusively used in building or construction, namely, framework of metal for building, girders of metal, beams of metal, brackets of metal for building, metal reinforcement materials for buildings, metal building fascia, metal building panels, metal building flashing, metal staircases, metal doors, metal windows, metal ceiling panels and tile; barrels of metal; signboards of metal; modular buildings of metal; galvanized steel sheets; stainless steels; tubes of stainless steel; nickel and its alloys; magnesium and its alloys; zinc and its alloys; titanium and its alloys; bolts of metal; metal nuts; screws of metal; pipes of metal; wire of common metal Vessels, namely, boats and ships; structural parts and fittings for vessels; braking systems for vehicles and parts thereof; motorcycles; structural parts and accessories for motorcycles; motors for land vehicles; driving motors for land vehicles; axle bearings for land vehicles; wheel bearings for land vehicles; engines for land vehicles; automobiles; automobile engines; structural parts and accessories for automobiles; bicycles; structural parts and fittings for bicycles; rolling stock for railways; structural parts and fittings for railway vehicles; tires for vehicle wheels; aircraft; structural parts and fittings for aircraft Welding services; rental of welding apparatus; rental of welding and soldering apparatus and machines; processing of structural steels; treatment of materials, namely shearing of steel; industrial treatment of effluents; processing of metals; metal casting; metal treating; electricity generation; incineration of industrial waste; production of energy; blacksmithing; recycling of waste and trash; millworking; processing of plastics; treatment of waste materials relating to environmental pollution control; recycling of coal; processing of coal; recycling of coke; processing of coke; casting of metal molds Research in the field of welding; engineering services relating to metal forming systems; research relating to metals; engineering services relating to metal handling systems; engineering surveying; construction planning; product design; research in the field of building construction; electrical engineering services
48.
COLD-ROLLED STEEL PLATE FOR HOT FORMING, HAVING EXCELLENT CORROSION-RESISTANCE AND SPOT-WELDABILITY, HOT-FORMED MEMBER, AND METHOD FOR MANUFACTURING SAME
An aspect of the present invention relates to a cold-rolled steel plate for hot forming, which is excellent in corrosion-resistance and spot-weldability, contains, by weight %, C: 0.1-0.4%, Si: 0.5-2.0%, Mn: 0.01-4.0%, Al: 0.001-0.4%, P: 0.001-0.05%, S: 0.0001-0.02%, Cr: 0.5% to less than 3.0%, N: 0.001-0.02%, and a balance of Fe and inevitable impurities, satisfying formula (1) below, and includes an Si amorphous oxidation layer continuously or discontinuously formed at a thickness of 1 nm-100 nm on the surface thereof. Formula (1): 1.4≤0.4*Cr+Si≤3.2 (wherein element symbols denote measurements of respective element contents by weight %).
The present invention provides an apparatus and a method for controlling a vehicle and a vehicle system having same. According to an embodiment, the apparatus for controlling a vehicle comprises: a processor; and a storage medium storing instructions executable by the processor, wherein the processor is configured to execute the instructions to: determine a driving mode on the basis of traveling information of a vehicle; determine the shaft ratios of a plurality of motors included in the vehicle on the basis of the driving mode and a boundary speed; and drive the vehicle on the basis of the shaft ratios of the plurality of motors.
B60L 15/38 - Control or regulation of multiple-unit electrically-propelled vehicles with automatic control
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
50.
FLASHBUTT WELDING MEMBER WITH EXCELLENT PROCESSABILITY AND MANUFACTURING METHOD
A flashbutt joint member having excellent processability of a joint portion and a welding method thereof are provided. The present disclosure relates to a joint member having excellent processability and a manufacturing method thereof, and in a joint member having a joint portion obtained by flashbutt welding a butt joint portion of a steel sheet using an electrode, an average hardness difference between a coarse grain heat-affected zone and a fine grain heat-affected zone formed on any one of left and right sides of the joint portion, based on a joint line (joint interface) is within 50 in Vickers hardness.
A welding member having excellent weld fatigue characteristics is provided. The present disclosure can provide a gas shielded arc welding member that can secure excellent fatigue characteristics in an automotive industry.
A martensitic stainless steel according to one embodiment of the present invention can be a martensitic stainless steel comprising, by wt%, 0.500-0.800% of carbon (C), 0.200-1.000% of silicon (Si), 0.300-1.000% of manganese (Mn), 0.001-0.500% of copper (Cu), 0.007-1.000% of nickel (Ni), 12.000-15.000% of chromium (Cr), 0.050-1.000% of molybdenum (Mo), 0.030-0.500% of vanadium (V), 0.003-0.100% of titanium (Ti), 0.020-1.000% of nitrogen (N), and the balance of iron (Fe) and inevitable impurities, wherein the value of carbide index relation (1) 327*[C]+25*[Si]-0.9*[Mn]+18*[Cu]+8.6*[Ni]+13.8*[Cr]+2.3*[Mo]+74*[V]+35*[Ti]-191*[N] is 425 or less.
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 32/00 - Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
53.
DOUBLY ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
A oriented electrical steel sheet according to an embodiment of the present invention includes: in wt %, Si at 2.0 to 4.0 wt %, Al at 0.01 to 0.04 wt %, S at 0.0004 to 0.002 at %, Mn at 0.05 to 0.3 wt %, N at 0.008 wt % or less (excluding 0 wt %), C at 0.005 wt % or less (excluding 0 wt %), P at 0.005 to 0.15 wt %, Ca at 0.0001 to 0.005 wt %, Mg at 0.0001 to 0.005 wt %, and the balance including Fe and other impurities unavoidably added thereto.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
Provided is a method for producing high strength multi-phase steel. the method includes: reheating a slab; hot-rolling the reheated slab to obtain a hot-rolled steel sheet; firstly cooling the hot-rolled steel sheet to a first cooling end temperature of 500° C. to 700° C. at a rate of 10° C./sec to 70° C./sec; air-cooling the firstly cooled hot-rolled steel sheet at the first cooling end temperature for 3 to 10 seconds; secondly cooling the air-cooled hot-rolled steel sheet to a second cooling end temperature of 400° C. to 550° C. at a rate of 10° C./sec to 70° C./sec; coiling the secondly cooled hot-rolled steel sheet at the second cooling end temperature; and thirdly cooling the coiled hot-rolled steel sheet to 200° C. or less at a rate of 25° C./hour or less, excluding 0° C./hour.
One aspect of the present invention is to provide a stainless steel material having excellent diffusion bonding properties and a method for manufacturing same. In addition, another aspect of the present invention is to provide a method for diffusion bonding of the steel material capable of securing high strength and excellent low-temperature impact toughness.
RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY (Republic of Korea)
Inventor
Jeong, Cheon-Woo
Kim, Ji-Won
Kim, Sung-Joong
Kim, Joon-Woo
Ryoo, Ho-Geun
Lee, Dong-Cheol
Jung, Suk-Yong
Song, Han-Dock
Ha, Chang-Ho
Park, Yun-Sung
Moon, Gun-Hyeok
Abstract
The present invention provides an ammonia recovery device comprising: a first ammonia purification column for separating impurity gas from a mixed gas containing ammonia; a second ammonia purification column for separating a first residual impurity gas from the mixed gas that has passed through the first ammonia purification column; and a third ammonia purification column for separating a second residual impurity gas from the mixed gas that has passed through the second ammonia purification column.
The present invention relates to a cold-rolled steel sheet and a manufacturing method therefor and, more specifically, to a cold-rolled steel sheet suitable for use as a steel material for automotive reinforcements such as bumper beams, seal side beams, and for the protection of electric vehicle battery cases like side frames, cross members, etc., and to a manufacturing method therefor. A preferable aspect of the present disclosure is to provide an ultra-high strength cold rolled steel sheet with excellent bending properties, shape and weldability and tensile strength of 1470 MPa or more and a manufacturing method thereof.
The present invention relates to an antivirus composite resin composition comprising: 30-60 weight % of a urethane-modified polyester binder resin; 3-15 weight % of a hardener; 0.1-10 weight % of a pigment; 0.1-10 weight % of an antivirus compound; and the remainder of a solvent, wherein the antivirus component comprises one or more selected from the group consisting of (A) metal hydroxide ([M1OH2]), (B) hydroxyapatite ([Ca10(PO4)6(OH)2)), and (C) metal-doped thermosensitive titanium dioxide photocatalyst ([M2—TiO2]), wherein M1 is Ca or Mg, and M2 is Pt, Cr, V, Mn, Fe, Zn, Cu, Ni, Zr, Mo, Ag, W, or Au.
Embodiments of the present disclosure provides an aluminum alloy-plated steel sheet having high surface quality and weldability, a hot-formed member, and methods for manufacturing the aluminum alloy-plated steel sheet and the hot-formed member. The aluminum alloy-plated steel sheet includes: a base steel sheet; and an aluminum alloy plating layer formed on the base steel sheet, wherein the aluminum alloy plating layer includes, by weight %, Zn: 21% to 35%, Si: 1% to 6.9%, Fe: 2% to 12%, and the balance of Al and inevitable impurities.
A hot-rolled steel sheet and a manufacturing method therefor are provided. The hot-rolled steel sheet of the present disclosure comprises, in wt %, 0.03-0.08% of C, 0.01-1.0% of Si, 1.0-2.0% of Mn, 0.01-0.1% of Sol.Al, 0.005-0.5% of Cr, 0.005-0.3% of Mo, 0.001-0.05% of P, 0.001-0.01% of S, 0.001-0.01% of N, 0.005-0.12% of Ti, 0.005-0.06% of Nb, 0.005-0.2% of V, 0.0003-0.003% of B, and the balance being Fe and inevitable impurities, and satisfies relational formula 1-2.
An electric furnace equipment including: a body part having an inner space capable of processing a raw material; an electrode part installed to be inserted into the inner space of the body part; an input part installed in the body part to be capable of inputting the raw material to the inner space of the body part; and a photographing part installed in the body part to be capable of photographing the area around the electrode part in the inner space of the body part; and an input control part which detects a spacing distance (Dm) between the electrode part and a raw material stack formed by the raw material stacked around the electrode part by using a photograph image acquired by the photographing part and controls an input of the raw material input to the body part from the input part according to the detected spacing distance (Dm).
C21B 13/12 - Making spongy iron or liquid steel, by direct processes 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
H05B 7/20 - Direct heating by arc discharge, i.e. where at least one end of the arc directly acts on the material to be heated, including additional resistance heating by arc current flowing through the material to be heated
62.
PLATED STEEL SHEET FOR HOT PRESS FORMING HAVING EXCELLENT SURFACE PROPERTIES AND METHOD FOR MANUFACTURING SAME
The present invention relates to a plated steel sheet for hot press forming, having excellent surface properties, and a method for manufacturing same, and more specifically relates to a plated steel sheet for hot press forming, which has excellent production properties and corrosion resistance, and has excellent surface quality as the plating layer does not separate from the base material even after hot press forming, and a method for manufacturing same.
The steel sheet according to an aspect of the present invention has a GDS profile of an Mn element and a GDS profile of an Si element, which are observed from the surface to the depth, sequentially including a maximum point and a minimum point, wherein a difference of converted concentration of Mn is 80% or more, and a difference of converted concentration of Si is 50% or more.
A method for operating an electric furnace after pausing the operation thereof, according to the present disclosure, comprises: feeding pig iron, through a supplementary material feed port of the electric furnace, to deposit same underneath an electrode rod of the electric furnace while a roof of the electric furnace is closed; applying a high current to the electrode rod to melt the pig iron to produce a molten material; and introducing scrap into the molten material through a side opening of the electric furnace so as to melt the scrap.
RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY (Republic of Korea)
Inventor
Nam, Sang Cheol
Song, Jung Hoon
Abstract
This proposes a minimum core radius for nickel-based metal hydroxide particles having a core-shell gradient (CSG) in which a concentration of nickel in a core portion is constantly maintained and a concentration of nickel in a shell portion is sharply decreased.
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
66.
COLD-ROLLED STEEL SHEET HAVING EXCELLENT BENDABILITY AND HOLE EXPANDABILITY AND METHOD FOR MANUFACTURING SAME
Provided is a method of manufacturing a cold-rolled steel sheet. The method includes: hot-rolling a steel slab under a finish rolling outlet temperature condition of Ar3 to Ar3+50° C. after reheating the steel slab; coiling the hot-rolled steel sheet at a temperature of 600° C. to 750° C.; by cold-rolling the hot-rolled steel sheet at a reduction rate of 40% to 70%; and overaging the cold-rolled steel sheet after continuous annealing, primary cooling at a cooling rate of 1 to 10° C./sec to 650° C. to 700° C., and secondary cooling at a cooling rate of 5 to 20° C./sec to a temperature of Ms−100° C. to Ms° C. The steel slab includes, by wt %, 0.03 to 0.07 of carbon, 2.0 to 3.0 of manganese, 0.01 to 0.10 of soluble aluminum, 0.3 to 1.2 of chromium, 0.03 to 0.08 of titanium, 0.01 to 0.05 of niobium, 0.0010 to 0.0050 of boron, 0.001 to 0.10 of phosphorous.
Provided is a method of manufacturing a heterogeneous coated steel sheet having excellent workability and corrosion resistance. The method includes: preparing a steel sheet; levitating a coating material by electromagnetic force in a vacuum chamber to generate zinc deposition vapor, and forming a zinc coating layer having an adhesion amount of 5 to 60 g/m2 on one surface of the steel sheet by inducing and ejecting the zinc deposition vapor; and generating zinc-magnesium alloy deposition vapor by levitating a coating material by electromagnetic force in a vacuum chamber, and forming a zinc-magnesium alloy coating layer having an adhesion amount of 10 to 40 g/m2 on the other surface of the steel sheet by inducing and ejecting the zinc-magnesium alloy deposition vapor. A Mg content contained in the zinc-magnesium alloy deposition vapor is 8 to 30 weight %.
The present invention provides a vehicle wheel disk comprising: a fixing unit; and a spoke unit extending radially outward from the fixing unit. The fixing unit comprises: a fixing body having a fixing hole formed through the center portion thereof; and multiple fastening portions formed in the fixing body and spaced apart from each other around the fixing hole to be fastened to an object to be fixed. When a virtual circle connecting the center portions of fastening holes of the fastening portions is referred to as a hole connection circle and when a portion surrounded by the hole connection circle, the spoke unit, and the fastening portions is referred to as a reference area, the fixing unit comprises a reference surface that is brought into contact with the object to be fixed in at least a partial area of the reference area when installed on the object to be fixed.
The present disclosure relates to an extremely thick steel material for a flange having excellent strength and low-temperature impact toughness, and a method of manufacturing the same.
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
B21B 1/02 - 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 heavy work, e.g. ingots, slabs, billets, in which the cross-sectional form is unimportant
B21B 1/04 - 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 heavy work, e.g. ingots, slabs, billets, in which the cross-sectional form is unimportant in a continuous process
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
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
72.
AUSTENITIC STAINLESS STEEL WITH IMPROVED LOW-TEMPERATURE IMPACT TOUGHNESS AND STRENGTH AND METHOD OF MANUFACTURING THE SAME
The present invention relates to a steel sheet suitable for automobile chassis members, etc., and, more particularly, to an ultra-high strength steel sheet having excellent bendability, and a manufacturing method therefor.
The present invention relates to a reduced iron producing facility and method and, more specifically, to a reduced iron producing facility and method for producing reduced iron by reducing a raw material. A reduced iron producing facility according to an embodiment of the present invention comprises: a reduction unit capable of producing reduced iron; a thermal decomposition unit capable of preparing hydrogen gas and solid carbon by thermally decomposing hydrocarbon-containing gas; and a connection unit connecting the reduction unit and the thermal decomposition unit so that at least a portion of exhaust gas discharged from the reduction unit can be supplied to the reduction unit together with the hydrogen gas prepared by the thermal decomposition unit.
C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
80.
APPARATUS AND METHOD FOR CONTROLLING VEHICLE AND VEHICLE SYSTEM INCLUDING SAME
The present invention provides an apparatus and method for controlling a vehicle and a vehicle system including same. An embodiment provides an apparatus for controlling a vehicle, the apparatus comprising a processor and a storage medium storing instructions executable by the processor. By executing the instructions, the processor is configured to: measure the speed of the vehicle; determine an axle ratio of the vehicle on the basis of the speed of the vehicle and a preset boundary speed; and drive the vehicle on the basis of the axle ratio.
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
81.
HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET HAVING GOOD PLATING QUALITY, STEEL SHEET FOR PLATING, AND METHODS FOR MANUFACTURING SAME
The steel sheet according to an aspect of the present invention has a GDS profile of an Mn element and a GDS profile of an Si element, which are observed from the surface to the depth, sequentially including a maximum point and a minimum point, wherein a difference of converted concentration of Mn is 80% or more, and a difference of converted concentration of Si is 50% or more.
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
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 3/20 - ElectroplatingBaths therefor from solutions of iron
C25D 5/50 - After-treatment of electroplated surfaces by heat-treatment
82.
PLATED STEEL SHEET FOR HOT PRESS FORMING HAVING EXCELLENT PLATING QUALITY, STEEL SHEET, AND RESPECTIVE METHODS FOR MANUFACTURING SAME
The steel sheet according to an aspect of the present invention has a GDS profile of an Mn element and a GDS profile of an Si element, which are observed from the surface to the depth, sequentially including a maximum point and a minimum point, wherein a difference of converted concentration of Mn is 80% or more, and a difference of converted concentration of Si is 50% or more.
The steel sheet for plating according to an aspect of the present invention has a GDS profile of an Mn element and a GDS profile of an Si element, which are observed from the surface to the depth, sequentially including a maximum point and a minimum point, wherein a difference of converted concentration of Mn is 10% or more, and a difference of converted concentration of Si is 10% or more.
Provided are an austenite stainless steel having high strength, high ductility, and improved corrosion resistance by realizing ultrafine grain characteristics and a manufacturing method therefor.
Provided are an austenite stainless steel having high strength, high ductility, and improved corrosion resistance by realizing ultrafine grain characteristics and a manufacturing method therefor.
The austenite stainless steel according to an embodiment of the present disclosure includes, in weight %, at least 0.05% but not more than 0.1% of C, at least 0.2% but not more than 0.7% of Si, at least 2.0% but not more than 4.0% of Mn, more than 0% but less than 0.1% of P, more than 0% but less than 0.01% of S, at least 17% but not more than 19% of Cr, at least 2.0% but not more than 4.0% of Ni, at least 1.0% but not more than 2.5% of Cu, at least 0.15% but not more than 0.25% of N, and the balance being iron (Fe) and inevitable impurities and is 5 μm or less in average grain diameter of the thickness center.
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
85.
HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND ELECTRIC RESISTANCE SPOT WELDABILITY, AND MANUFACTURING METHOD THEREFOR
A hot-dip galvanized steel sheet according to one aspect of the present invention comprises a base steel sheet and a hot-dip galvanized layer formed on the surface of the base steel sheet, wherein the difference between the average of the Mn/Si values of surface oxides present on a surface portion, which is the region from the interface between the hot-dip galvanized layer and the base steel sheet to a depth of 15 nm, and the average of the Mn/Si values of internal oxides, which are present in the region from the interface to a depth of 50-100 nm, can be 0.5 or more. Mn and Si of each oxide mean the amounts (wt %) of Mn and Si components in the oxide, which are measured by EDS, and the average of Mn/Si values means the averaged value of the Mn/Si values measured for each oxide.
The present invention relates to a buffer tank provided in an air conditioning system of a data center, and a distributor provided in the buffer tank. There may be provided: a distributor that can prevent destruction of a water-temperature stratification layer; and a buffer tank equipped with same.
The present invention relates to a buffer tank provided in an air conditioning system of a data center, and a distributor provided in the buffer tank, and may provide: a distributor which can prevent breakdown of a temperature-separated layer; and a buffer tank equipped with same.
The present invention relates to: a buffer tank provided in an air conditioning system of a data center; and a distributor provided in the buffer tank. A distributor capable of preventing the destruction of a thermocline and a buffer tank having same may be provided.
The present invention relates to a buffer tank installed in an air conditioning system of a data center and a distributor provided in the buffer tank. The buffer tank comprises: a case that has a first space formed therein and an inlet through which fluid flows into the first space from the outside, wherein a first surface, which is one of the surfaces surrounding the first space, is at least partially open; a first wall portion that covers the open first surface and has a plurality of first through-holes; and a second wall portion that is formed, inside the case, in a direction intersecting the first surface, and divides the first space into a first region and a second region. The first region is a region surrounded by the second wall portion, and the second region is a region outside the second wall portion. Accordingly, the present invention provides the effect of preventing the destruction of a thermocline and thus sufficiently satisfying the time required for stratification.
Provided are a non-quenched and tempered steel rod wire with improved machinability and impact toughness and method for manufacturing same. The non-quenched and tempered steel rod wire according to the present disclosure includes, in percent by weight (wt %), 0.3% to 0.5% of C, 0.4% to 0.9% of Si, 0.5% to 1.2% of Mn, 0.02% or less of P, 0.01% to 0.05% of S, 0.015% to 0.05% of sol·Al, 0.1% to 0.3% of Cr, 0.007% to 0.02% of N, and the balance being Fe and inevitable impurities, wherein a microstructure includes ferrite and pearlite, and Relational Expression 1 below is satisfied: [Relational Expression1][N]-[Al]/1.93≤0.009.
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
The present invention relates to a buffer tank provided in an air conditioning system of a data center and a distributor provided in the buffer tank. The present invention may provide a distributor capable of preventing destruction of a water temperature separation layer and a buffer tank comprising same.
An impact reinforcement component according to the present invention comprises a component body having side walls formed on both longitudinal sides thereof and a top plate connecting the upper ends of the two side walls; and end flanges formed by being bent at respective longitudinal ends of the component body, wherein the component body, formed by repeated roll stamping in succession through which material is rotatingly pressed multiple times by means of stamping rolls, comprises: a body portion having beads formed along the top plate in the longitudinal direction; and boundary portions which are integrated with the body portion and respective end flanges, being the connecting portions therebetween, and have a flat top plate.
An aspect of the present invention may provide a welded steel pipe having superior wear resistance and low-temperature toughness, and a method for manufacturing the same. And, the welded steel pipe may have particularly suitable physical properties for delivering the slurry by minimizing occurrence of high-temperature cracks in a welded portion.
C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
C22C 38/38 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
94.
METHOD FOR PREPARING ACRYLIC EMULSION RESIN COMPOSITION HAVING ANTIVIRAL AND ANTIBACTERIAL EFFECTS AND ACRYLIC EMULSION RESIN COMPOSITION PREPARED THEREBY
The present invention relates to a method for preparing an acrylic emulsion resin composition having antiviral and antibacterial effects and, in particular, to a preparation method in which an acrylic emulsion resin is prepared by polymerizing a monomer mixture including a vinyl monomer containing a quaternary ammonium functional group, which is widely used due to having excellent antiviral and antibacterial effects. Also, the present invention relates to an acrylic emulsion resin composition having antiviral and antibacterial effects, the acrylic emulsion resin composition comprising a polymer of a monomer mixture including a vinyl monomer containing a quaternary ammonium salt group.
Provided are a non-quenched and non-tempered steel wire rod with improved machinability and impact toughness and a method for manufacturing the same. The non-quenched and non-tempered steel wire rod according to the present disclosure includes, in percent by weight (wt %), 0.3% to 0.5% of C, 0.4% to 0.9% of Si, 0.5% to 1.2% of Mn, 0.02% or less of P, 0.01% to 0.05% of S, 0.01% to 0.05% of sol.Al, 0.1% to 0.3% of Cr, 0.01% to 0.02% of Ti, 0.0005% to 0.002% of Ca, 0.007% to 0.02% of N, and the balance of Fe and inevitable impurities, and includes ferrite and pearlite as a microstructure, wherein Relational Expression 1 below is satisfied and an area fraction of MnS satisfies a range of 0.10% to 0.60%. [Relational
Provided are a non-quenched and non-tempered steel wire rod with improved machinability and impact toughness and a method for manufacturing the same. The non-quenched and non-tempered steel wire rod according to the present disclosure includes, in percent by weight (wt %), 0.3% to 0.5% of C, 0.4% to 0.9% of Si, 0.5% to 1.2% of Mn, 0.02% or less of P, 0.01% to 0.05% of S, 0.01% to 0.05% of sol.Al, 0.1% to 0.3% of Cr, 0.01% to 0.02% of Ti, 0.0005% to 0.002% of Ca, 0.007% to 0.02% of N, and the balance of Fe and inevitable impurities, and includes ferrite and pearlite as a microstructure, wherein Relational Expression 1 below is satisfied and an area fraction of MnS satisfies a range of 0.10% to 0.60%. [Relational
2
0
≤
[
Mn
]
/
[
S
]
≤
7
0
[
Relational
Expression
1
]
C21D 8/06 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
The present invention relates to a high-strength steel plate and a manufacturing method therefor and, more specifically, to a high-strength steel plate having excellent impact resistance after cold forming and having a high-yield ratio, and a manufacturing method therefor.
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
97.
PLATED STEEL SHEETS FOR HOT PRESS FORMING HAVING EXCELLENT HYDROGEN BRITTLENESS RESISTANCE AND IMPACT RESISTANCE, HOT PRESS FORMED PARTS, AND MANUFACTURING METHODS THEREOF
Provided are a plated steel sheet for hot press forming including: a base steel sheet; an aluminum or aluminum alloy plating layer provided on at least one surface of the base steel sheet; and a Sb-rich layer provided between the base steel sheet and the plating layer, wherein the plated steel sheet for hot press forming satisfies the following Relational Expressions 1-1 and 1-2, a hot press formed member manufactured using the same, and methods for manufacturing the plated steel sheet for hot press forming and the hot press formed member.
Provided are a plated steel sheet for hot press forming including: a base steel sheet; an aluminum or aluminum alloy plating layer provided on at least one surface of the base steel sheet; and a Sb-rich layer provided between the base steel sheet and the plating layer, wherein the plated steel sheet for hot press forming satisfies the following Relational Expressions 1-1 and 1-2, a hot press formed member manufactured using the same, and methods for manufacturing the plated steel sheet for hot press forming and the hot press formed member.
Sb
max
Sb
coat
≥
1.2
[
Relational
Expression
1
‐
1
]
(
Sb
max
-
Sb
coat
)
2
×
Δ
t
≥
0
.
0
0
8
[
Relational
Expression
1
‐
2
]
Provided are a plated steel sheet for hot press forming including: a base steel sheet; an aluminum or aluminum alloy plating layer provided on at least one surface of the base steel sheet; and a Sb-rich layer provided between the base steel sheet and the plating layer, wherein the plated steel sheet for hot press forming satisfies the following Relational Expressions 1-1 and 1-2, a hot press formed member manufactured using the same, and methods for manufacturing the plated steel sheet for hot press forming and the hot press formed member.
Sb
max
Sb
coat
≥
1.2
[
Relational
Expression
1
‐
1
]
(
Sb
max
-
Sb
coat
)
2
×
Δ
t
≥
0
.
0
0
8
[
Relational
Expression
1
‐
2
]
[In Relational Expressions 1-1 and 1-2, Sbcoat represents an average content of Sb in the plating layer, and a unit thereof is wt %, Sbmax represents a maximum value of a content of Sb in the Sb-rich layer, and a unit thereof is wt %, and Δt represents a linear distance from a boundary between the plating layer and the Sb-rich layer to a point where Sbmax is measured, and a unit thereof is μm.]
Provided is a method of manufacturing a high-strength hot-dip galvanized steel sheet. The method includes: heating a slab at 1100 to 1300° C., the slab containing, 0.003 to 0.005% of C, 0.05% or less of Si, 0.4 to 1.0% of Mn, 0.04 to 0.06% of P, 0.01% or less of S, 0.005% or less of N, 0.1% or less of S. Al, 0.05 to 0.08% of Mo, 0.005 to 0.03% of Ti, 0.02 to 0.035% of Nb, 0.06 to 0.1% of Cu, 0.0015% or less of B, and a balance of Fe and inevitable impurities; hot-rolling the heated steel slab to a finish temperature of 920 to 970° C., and coiling the heated steel slab at 600 to 650° C.; cold-rolling the coiled steel sheet; annealing the cold-rolled steel sheet at 760 to 830° C. and hot-dip galvanizing the cold-rolled steel sheet; and alloying heat-treating the hot-dip galvanized steel sheet at 500 to 560° C.
According to the present invention, provided are a shaped part manufactured by sintering soft magnetic iron-based powder, and a manufacturing method thereof. According to an embodiment of the present invention, provided is a shaped part manufactured by sintering soft magnetic iron-based powder, wherein 90% or more of the soft magnetic iron-based powder has an average particle size of 150 to 400 ㎛, and 10% or less of the soft magnetic iron-based powder has an average particle size of 50 ㎛ or less. The shaped part may be a stator core of a linear motor.
H02K 1/02 - Details of the magnetic circuit characterised by the magnetic material
H02K 1/12 - Stationary parts of the magnetic circuit
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H01F 1/147 - Alloys characterised by their composition
H01F 1/22 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
B22F 3/16 - Both compacting and sintering in successive or repeated steps
B22F 1/16 - Metallic particles coated with a non-metal
C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
