METHOD FOR PRODUCING A HOT-FORMED AND HEAT-TREATED STEEL COMPONENT THAT IS COATED WITH A METAL ANTI-CORROSION COATING FROM A SHEET STEEL PRODUCT

摘要

The present invention is coated with a metallic coating corrosion products from the steel sheet having a Mn content of at least 0.4% by weight The steel related to a method for producing a structural component. While economically producing a high-strength steel metal components - in order to minimize the risk of development induced cracking, the production method of the present invention, up to 25 vol.% H ₂ , as the balance of 0.1 to 10% by volume of NH _{of 3} , H ₂ 0 and N ₂ , as well as the inevitable impurities contained relating to the fair and to -5 -50 range under the annealing atmosphere having a dew point, at a holding temperature of 400 to 1100 , 5 s for a holding period of 1 to 600 s, is treated in a continuous annealing in a steel sheet product. The annealed sheet product has a nitride layer (N) of 5 to 200 thickness, it is more fine than the grain size of the particle size of the nitride layer of the steel sheet product the inner core layer (K). Coating the steel sheet product and a metallic protective layer, remove the blank from the steel sheet product, optionally after preforming the blank, and the blank is heated in the austenitizing temperature of 780 to 950 , steel components the hot forming and to form, and in that it comprises a rapid cooling step to form the cured structure in the steel sheet product characterized. ;