METHOD FOR PRODUCING A HOT-FORMED AND PRESS-HARDENED METAL COMPONENT

The present invention relates to a method for producing a hot-formed and press-hardened metal component for an automobile having at least two regions of different hardness. A hardenable sheet-metal blank is heated to at least an austenizing temperature and a first region of the sheet-metal blank is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PELLMANN MARKUS, BOEKE JOHANNES
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention relates to a method for producing a hot-formed and press-hardened metal component for an automobile having at least two regions of different hardness. A hardenable sheet-metal blank is heated to at least an austenizing temperature and a first region of the sheet-metal blank is intermediately cooled at a cooling speed greater than the lower critical cooling speed of the material of the sheet-metal blank. The sheet-metal blank is then hot-formed and press-hardened in a press-hardening tool by quenching the first region from a bainitic structure transformation stage, thereby adjusting a mixed structure of martensite and bainite in the first region.