Plated steel sheet and method of hot-stamping plated steel sheet
AssigneeNippon Steel Corporation
InventorsJun Maki, Masao Kurosaki, Seiji Sugiyama
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Abstract
In a plated steel sheet having an aluminum-plating layer comprising at least Al formed on one side or both sides of the steel sheet, there is provided a plated steel sheet which, owing to the presence of a surface coating layer containing a compound having wurtzite crystal structure on the aluminum-plating layer, has excellent lubricity, prevents the plating thickness from becoming uneven during heating, and can improve formability and productivity in hot stamping, and a method of hot-stamping the plated steel sheet.
Claims3
A method of hot-stamping aluminum-plated steel sheet, characterized in heating blanked aluminum-plated steel sheet comprising an aluminum-plating layer formed on one side or both sides of the steel sheet, and a surface coating layer containing ZnO overlaid on the aluminum-plating layer(s), and forming the heated aluminum-plated steel sheet by stamping.
A method of hot stamping aluminum-plated steel sheet, characterized in box-annealing coiled aluminum-plated steel sheet comprising an aluminum-plating layer formed on one side or both sides of the steel sheet, and a surface coating layer containing ZnO overlaid on the aluminum-plating layer(s), thereafter blanking and heating it, and stamping and forming the heated aluminum-plated steel sheet.
Dependencies are inferred from the claim text.