C21D1/74

ANNEALING SEPARATOR COMPOSITION FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET, GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND MANUFACTURING METHOD THEREFOR
20230047863 · 2023-02-16 · ·

An annealing separator composition for a grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention contains a composite metal oxide containing Mg and a metal M, wherein the metal M is one or more of Be, Ca, Ba, Sr, Sn, Mn, Fe, Co, Ni, Cu, and Zn.

NON-ORIENTED ELECTRICAL STEEL SHEET, AND METHOD FOR MANUFACTURING SAME
20230045797 · 2023-02-16 · ·

A non-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes, in wt%, Si: 1.5 to 4.0%, Al: 0.5 to 1.5%, Mn: 0.05 to 0.55%, C: 0.005% or less, Ti: 0.004% or less (excluding 0%), N: 0.005% or less (excluding 0%), S: 0.005% or less (excluding 0%), and Cu: 0.01% or less (excluding 0%), and the balance of Fe and inevitable impurities, and satisfies Formula 1 and Formula 2 below.


[N]≤0.005×([Al]×[Ti])  [Formula 1]


[S]≤0.01×([Mn]+[Cu])  [Formula 2]

(In Formula 1 and Formula 2, [N], [Al], [Ti], [S], [Mn], and [Cu] represent a content (wt %) of N, Al, Ti, S, Mn, and Cu, respectively).

METHOD, FURNACE INSTALLATION AND SYSTEM FOR THE HOT STAMPING OF WORKPIECES
20180002774 · 2018-01-04 ·

A system for the hot stamping of workpieces having a furnace installation, in which workpieces can be heated to a forming temperature, and a forming installation, in which the heated workpieces can undergo forming. A transfer device is provided for transferring workpieces from the furnace installation to the forming installation. The transfer device is arranged in a transfer space, which is delimited at least in certain regions by a housing and largely bridges the space between the furnace installation and the forming installation. Also provided is a method for the hot stamping of workpieces.

METHOD, FURNACE INSTALLATION AND SYSTEM FOR THE HOT STAMPING OF WORKPIECES
20180002774 · 2018-01-04 ·

A system for the hot stamping of workpieces having a furnace installation, in which workpieces can be heated to a forming temperature, and a forming installation, in which the heated workpieces can undergo forming. A transfer device is provided for transferring workpieces from the furnace installation to the forming installation. The transfer device is arranged in a transfer space, which is delimited at least in certain regions by a housing and largely bridges the space between the furnace installation and the forming installation. Also provided is a method for the hot stamping of workpieces.

HIGH-STRENGTH PLATED STEEL SHEET AND METHOD FOR PRODUCING SAME

A high-strength plated steel sheet sequentially includes an internal oxidized layer, a soft layer containing the internal oxidized layer, and a hard layer including a structure having metallic structure which contains a low-temperature-transformation produced phase in a proportion of 20 to 85% by area of the whole of the metallic structure, polygonal ferrite in a proportion more than 10% by area, and 70% or less by area of the whole of the metallic structure, and-retained austenite in a proportion of 5% or more by volume of the whole of the metallic structure. The high-strength plated steel sheet satisfies the average depth D of the soft layer being 20 μm or more, the average depth d of the internal oxidized layer being 4 μm or more and less than D, and a tensile strength being 980 MPa or more.

SPUTTERING TARGET AND/OR COIL, AND PROCESS FOR PRODUCING SAME
20180010241 · 2018-01-11 ·

A sputtering target and/or a coil disposed at a periphery of a plasma-generating region for confining plasma are provided. The target and/or coil has a surface to be eroded having a hydrogen content of 500 μL/cm.sup.2 or less. In dealing with reduction in hydrogen content of the surface of the target and/or coil, a process of producing the target and/or coil, in particular, conditions for heating the surface of the target and/or coil, which is believed to be a cause of hydrogen occlusion, are appropriately regulated. As a result, hydrogen occlusion at the surface of the target can be reduced, and the degree of vacuum during sputtering can be improved. Thus, a target and/or coil is provided that has a uniform and fine structure, makes plasma stable, and allows a film to be formed with excellent uniformity. A method of producing the target and/or the coil is also provided.

SPUTTERING TARGET AND/OR COIL, AND PROCESS FOR PRODUCING SAME
20180010241 · 2018-01-11 ·

A sputtering target and/or a coil disposed at a periphery of a plasma-generating region for confining plasma are provided. The target and/or coil has a surface to be eroded having a hydrogen content of 500 μL/cm.sup.2 or less. In dealing with reduction in hydrogen content of the surface of the target and/or coil, a process of producing the target and/or coil, in particular, conditions for heating the surface of the target and/or coil, which is believed to be a cause of hydrogen occlusion, are appropriately regulated. As a result, hydrogen occlusion at the surface of the target can be reduced, and the degree of vacuum during sputtering can be improved. Thus, a target and/or coil is provided that has a uniform and fine structure, makes plasma stable, and allows a film to be formed with excellent uniformity. A method of producing the target and/or the coil is also provided.

METHOD FOR APPLYING A METAL PROTECTIVE COATING TO A SURFACE OF A STEEL PRODUCT

A method for applying a metallic protective coating to a surface of a steel product, where another surface is to remain free from the metallic protective coating, may involve applying the metallic protective coating by hot dip coating in a hot dip coating bath. A preliminary coating may be applied to the surface that is to remain free from the metallic protective coating prior to the hot dip coating. The preliminary coating may include SiO.sub.2 and may prevent the metallic protective coating from adhering to the intended surface during hot dip coating. Thus one surface of a steel product may be provided with a metallic protective coating, and another surface of the steel product may be kept free from the protective coating, all with a minimum of cost and complexity and with optimized resource economics. Further, the preliminary coating, deposited from a gas phase to that surface of the steel product that is to be kept free from the metallic protective coating, may be a layer that includes amorphous silicon dioxide and has a layer thickness of 0.5-500 nm.”

HIGH-STRENGTH PLATED STEEL SHEET HAVING EXCELLENT PLATING PROPERTIES, WORKABILITY, AND DELAYED FRACTURE RESISTANCE, AND METHOD FOR PRODUCING SAME

The high-strength plated steel sheet of the present invention has a plated layer on the surface of a base steel sheet and contains predetermined steel components. The steel sheet includes, in the order from the interface of the base steel sheet and the plated layer towards the base steel sheet: a soft layer having a Vickers hardness that is 90% or less of the Vickers hardness at a portion t/4 of the base steel sheet, where t is a sheet thickness of the base steel sheet: and a hard layer containing martensite, bainite, and ferrite in predetermined ranges. The average depth D of the soft layer is 20 μm or greater, and the average depth d of an internal oxide layer is 4 μm or greater and smaller than D.

THERMOFORMED COMPONENT HAVING EXCELLENT COATING ADHESION, AND MANUFACTURING METHOD THEREFOR

Disclosed are thermoformed component having excellent coating adhesion and a method for manufacturing the same. The thermoformed component comprises a substrate layer and an aluminum coating coated on at least one surface of the substrate layer, wherein the average roughness Ra of a surface of the thermoformed component is between 1.0 μm and 3.0 μm, the peak height and the peak-to-valley height Rt are between 8 μm and 30 μm, and the roughness peak count Rpc is greater than or equal to 50. The thermoformed component has good paintability, good coating adhesion and good corrosion resistance, and is very suitable for automotive parts.