METHOD FOR PRODUCING A STEEL COMPONENT HAVING A METAL COATING PROTECTING IT AGAINST CORROSION, AND STEEL COMPONENT

摘要

The invention relates to a method which allows production of a steel component that has a well-adhering metal coating protecting it against corrosion. For this purpose, a flat steel product produced from a steel material which has a yield point of 150 - 1100 MPa and a tensile strength of 300 - 1200 MPa is coated with an anti-corrosion coating that is produced from an alloy which contains 35 - 70 wt.-% aluminum, 35 - 60 wt.-% zinc, 0.1 - 10 wt.-% magnesium, up to 10 wt.-% Si and up to 5 wt.-% Fe. A billet is obtained from the flat steel product, is directly heated to at least 800°C and is then molded into the steel component or is first molded into the steel component and then heated to at least 800°C. The steel component obtained is subsequently heat-treated by cooling it sufficiently quickly from a sufficiently high temperature.