METHOD FOR PRODUCING A MOTOR VEHICLE COMPONENT WITH AT LEAST TWO REGIONS OF DIFFERENT STRENGTHS

The invention relates to a method for producing a motor vehicle component (14) with at least two regions of different strengths and a protective layer. The method is characterized by the following steps: - providing pre-coated blanks (2), in particular precut blanks, made of a steel alloy which can...

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Bibliographische Detailangaben
Hauptverfasser: HIELSCHER CHRISTIAN, DVORAK BOREK, KOUT RADOVAN, HORN STEFAN, WERNEKE SIMON, SCHAELE MARTIN
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:The invention relates to a method for producing a motor vehicle component (14) with at least two regions of different strengths and a protective layer. The method is characterized by the following steps: - providing pre-coated blanks (2), in particular precut blanks, made of a steel alloy which can be hardened, - homogenously heating the blank to a heating temperature which is at least equal to orgreater than the AC1 temperature, preferable equal to or greater than the AC3 temperature - maintaining the heating temperature such that the pre-coating alloys with the blank (2), - homogenously intercooling the alloyed blank (2) to an intercooling temperature between 450 and 700 DEG C, - partially heating the blank (2) from the intercooling temperature in regions of a first type (10) to at least the AC3 temperature and keeping regions of a second type (11) substantially at the intercooling temperature, - hot-forming and press-hardening the partially tempered blank (12) so as to form a motorvehicle component (14), w