METHOD FOR HOT FORMING A COATED METAL PART AND FORMED PART

摘要

The invention relates to a method for manufacturing a coated part having very high mechanical properties using hot forming techniques. According to the invention, the method comprises the following steps: - providing an annealed steel strip or blank or pre-shaped part that has been coated with a metal or metal alloy before the annealing - if a strip is provided, cutting a blank from the strip before or after the annealing - optionally forming a pre-shaped part from the blank - heating the blank or pre-shaped part to a temperature of 500° C at an average heating rate of 16° C/s or more - further heating the blank or pre-shaped part to a temperature between 700 and 1000° C - hot forming the blank or pre-shaped part into a hot formed part - hardening the hot formed part. The invention also relates to a method for manufacturing a coated steel strip, blank or pre-shaped part, and to a coated steel strip, blank or part and a hot formed part.