Method for producing a sheet metal component hardened at least partially from steel and an at least partially hardened sheet metal component made from steel

摘要

The present invention relates to a method for producing an at least partially hardened sheet metal component (4) made of steel, the method comprising the following steps: providing a sheet metal blank (1) made of steel and coated with a zinc-based coating (1.2), - reshaping the sheet metal blank (1) ) to a shaped sheet metal component (3), - at least partial-area heating of the shaped sheet-metal component (3) to a temperature of at least Ac1, - at least partial-area hardening of the warm sheet-metal component (3) for the production of the at least partially hardened sheet-metal component (4), characterized in, that the forming comprises at least two steps, wherein in a first step a preform (2) is produced from the sheet metal blank (1) in such a way that in the preform (2) at least partially excess sheet metal material (2.11, 2.12, 2.21, 2.23, 2.31) is provided, and in a further step the preform (2) at least partially a pressure forming ng is subjected to the production of the formed sheet metal component (3), the excess sheet metal material (2.11, 2.12, 2.21, 2.23, 2.31) being caused to flow by the pressure forming and leading to an at least partial compressive stress superposition in the shaped sheet metal component (3).