Method of making a sheet-metal part

Abstract

The invention relates to a method for producing components from sheet metal, wherein at least one patch sheet (2) is placed on a base sheet (1) to form a material doubling and is positionally securely fixed, the component unit thus formed, comprising base sheet (1) and patch sheet (2), is heated to a temperature suitable for hot forming and is then hot-formed to form the component and, preferably subsequently or simultaneously, is subjected to partial or total cooling or quenching for the purpose of a specific structure conversion, wherein, for the purpose of improved corrosion protection, the base of sheet (1) in the contact region of the patch sheet (2), or the patch sheet (2) on the side thereof facing the base sheet (1), or both base sheet (1) and patch sheet (2) in the corresponding area are coated with an anti-corrosion coating (6) that is resistant to the temperatures occurring during the hot forming, before the patch sheet (2) is placed on the base sheet (1).

Dependencies are inferred from the claim text.