Method for producing a shaped steel component from a hot-formable flat steel product provided with a metallic coating that protects against corrosion, a flat steel product and a steel component that can be produced by the method

摘要

The present invention relates to a method for producing a shaped steel component from a hot-formable flat steel product provided with a metallic coating that protects against corrosion. In known processes, the penetration of liquefied coating material regularly leads to liquid metal embrittlement of the flat Stagl product. In order to avoid such a liquid metal embrittlement, the process according to the invention comprises the steps a) providing the hot-formable flat steel product, b) applying a Zn-based coating on the flat steel product, the coating comprising the constituents 5-30% by weight of a rare earth metal or 5-30 % By weight of a mixture of at least two rare earth metals, each with 1-99% by weight of the mixture, consisting of unavoidable impurities and the remainder Zn, c) hot forming and hardening of the flat steel product for producing the steel component.