Abstract: Provided are a non-oriented electrical steel sheet and a manufacturing method therefor. The electrical steel sheet of the present invention comprises, by weight %, C: 0.0050% or less, Si: 2.50 to 4.50%, Mn: 0.10 to 2.50%, P: 0.002 to 0.020%, S: 0.0010 to 0.0050%, Al: 0.50 to 2.50%, N: 0.0050% or less, Ti: 0.0050% or less, the balance being Fe and inevitable impurities, wherein Al, Si, and Mn satisfy relation expression 1, and the steel sheet's texture is formed to satisfy relation formula 3.

Abstract: The present invention pertains to a steel sheet used in automobiles etc. and, more specifically, to an ultra-high strength steel sheet having an excellent hole expansion ratio, and a method for manufacturing same.

Abstract: The present invention relates to a hot rolled steel sheet and a manufacturing method therefor. The objective of one aspect of the present invention is to provide a hot rolled steel sheet having excellent bending workability, strength and hardness, and a manufacturing method therefor. A preferred aspect of the present disclosure is to provide a hot-rolled steel sheet having excellent bending workability, strength, and hardness and a method for manufacturing the same.

Abstract: 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%.

Abstract: The present disclosure relates to a welding member and a wire for gas shielded arc welding.

Abstract: One aspect of the present invention relates to a plated steel sheet for hot press forming, having an excellent impact property.

Abstract: The present invention relates to a plated steel sheet which can be used for automobiles, home appliances, building materials, etc. and a method for manufacturing same and, more particularly, to a zinc alloy plated steel sheet having excellent adhesion to an adhesive and a method for manufacturing same.

Abstract: A gas shield arc welding wire is provided. The present invention relates to a gas shield arc welding wire 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% of less of S (excluding 0%); 0.50% or less of Cr (excluding 0%); 0.60% or less of Mo (excluding 0%); less than 0.10% of Al (excluding 0%); 0.40% or less of Ni (excluding 0%); 0.50% or less of Cu (excluding 0%); less than 0.10% of Ti (excluding 0%); and the balance of Fe and other unavoidable impurities, the wire satisfying relational expression 1 and relational expression 2.

Abstract: A black plated steel sheet may include a steel sheet and a zinc plating layer positioned on one side of the steel sheet. The zinc plating layer may contain a black layer on the uppermost surface. The black layer may include three or more portions of which the blackness is different from each other. In a first part, the thickness of the black layer may be more than 1 ?m. In a second part, the thickness of the black layer may be 250 nm or more to less than 1 ?m, and in a third part, the thickness of the black layer may be less than 200 nm.

Abstract: Methods of welding high manganese steel, the methods comprising: supplying at least one piece of high manganese steel; supplying the metal cored wire comprising a steel sheath with a core comprising powders of certain metal and carbon percentages and at least one of: i: sulfur in an amount less than 0.3 wt. %; or ii. phosphorous in an amount less than 0.03 wt. %; or a combination thereof; and the balance with iron; submerging the at least one piece of high manganese steel in a slag and arc stabilizer; and applying a current to the metal cored wire to produce a liquid alloy steel composition on the at least one piece of high manganese steel.

Abstract: Disclosed is a motion amplification device including: an encoder receiving a first frame and a second frame arbitrarily adjacent in an image, and decomposing the first frame into first shape information and first texture information and decomposing the second frame into second shape information and second texture information; a first module generating a third frame in which a motion of an object is amplified based on the first shape information, the second shape information, and the second texture information; a second module analyzing an intensity of the motion based on the first shape information, the second shape information, and the first texture information; and a third module generating amplification image data indicating the intensity of the motion on the third frame.

Abstract: An aspect of the present invention may provide a method for manufacturing a welded steel pipe having superior wear resistance and low-temperature toughness. And, the present invention may also provide a method for manufacturing a welded steel pipe having particularly suitable physical properties for delivering the slurry by minimizing occurrence of high-temperature cracks in a welded portion.

Abstract: A heat controllable battery pack is provided. The battery pack includes a lower cover including a first cooling line, through which a refrigerant moves, installed therein and supporting a lower portion of a plurality of cell modules, a plurality of crash structures installed in positions between the plurality of cell modules on an upper portion of the lower cover and including a second cooling line, through which the refrigerant cooling the cell modules moves, installed therein, a side frame protecting side surfaces of the plurality of cell modules, and an upper cover covering an upper portion of the plurality of cell modules.

Abstract: The present disclosure relates to methods for manufacturing a wire rod for cold forging and a screw part, which may manufacture with only quenching heat treatment a part with excellent drilling characteristics, and which may specifically manufacture a part to be used for mechanical coupling of automotive parts manufactured with different materials.

Abstract: The present disclosure relates to a graphite steel wire rod for TV PEM nut parts, a graphite steel, and a manufacturing and cutting method therefor, and more particularly, to a cutting method for manufacturing industrial parts, a graphite steel wire rod, a graphite steel wire rod, a graphite steel, and a manufacturing method therefor.

Abstract: An aluminum alloy-plated steel sheet having excellent workability and corrosion resistance and a method for manufacturing the same are disclosed. The aluminum alloy-plated steel sheet includes a base sheet, and an alloy-plated layer formed on the base sheet. Interfacial roughness between the alloy-plated layer and the base steel sheet is 25 ?m or less. Such an aluminum alloy-plated steel sheet prevents microcracks generated during hot forming and has excellent seizure resistance and corrosion resistance. A method for manufacturing such an aluminum alloy-plated steel is also disclosed.

Abstract: An embodiment of the present invention provides a hot-rolled steel sheet comprising, by wt %, 0.06-0.12% of C, 0.004-0.4% of Si, 0.8-2.0% of Mn, 0.01-0.05% of Al, 0.05-1.0% of Cr, 0.001-0.3% of Mo, 0.001-0.05% of P, 0.001-0.005% of S, 0.001-0.01% of N, 0.001-0.05% of Nb, 0.001-0.05% of Ti, 0.001-0.005% of B, and the remainder of Fe and other inevitable impurities, satisfying relational formula 1 below, and having a microstructure including, by area, 80% or more of auto-tempered martensite, and a remainder of at least one of fresh martensite, bainite, and ferrite. [Relational formula 1] (10[C]+[Si]+2.5[Mn])/(1.5[Cr]+2.0[Mo]?3.

Abstract: The present invention relates to a graphite steel having excellent machinability, and a manufacturing method therefor, and more specifically, to a calcium-containing graphite steel having machinability superior to that of normal free-cutting steel and a manufacturing method therefor.

Abstract: The present invention relates to a hot press formed member. A hot press formed member according to one aspect of the present invention comprises a steel sheet; and a plating layer on the steel sheet, wherein a number of voids per 1000 ?m2 of an area from an interface between the plating layer and the steel sheet to 15 ?m is zero and wherein a concentration gradient at a section having an Fe content of 45% to 80% in the plating layer in a thickness direction from a surface of the plating layer according to a result of GDS analysis is 7 wt %/?m or less.

Abstract: The present invention provides a shape checking device for a bending material including: a material fixing unit including a support member in which a first surface of a material including a first surface and a second surface, bent from the first surface is seated, and a pressing member configured to press the first surface of the material; and a distance measuring unit, and measuring a distance to the second surface, wherein the distance measuring unit includes a first distance measuring device for measuring a distance to the second surface, and a second distance measuring device for measuring a distance to a second surface, which is the same as the second surface on which a distance thereof is measured by the first distance measuring device, in a position, spaced apart from the first distance measuring device in a first direction, different from a bending forming direction of a material.