Press-hardened component and method for the production of a press-hardened component
AssigneeDaimlerChrysler AG
InventorsMichael Bayer, Martin Brodt
Life of this patent
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Abstract
A method for the production of press-hardened components, in particular a vehicle body component, from a semifinished product (2) made of unhardened, hot-workable steel sheet. A component blank (10) is formed from the semifinished product (2), pre-coated with a first coating (33), by a cold-forming method, in particular a drawing method. The component blank (10) is trimmed at the margins to a marginal contour (12′) approximately corresponding to the component (1) to be produced. The trimmed component blank (17) is heated and press-hardened in a hot-forming tool (23); then the press-hardened component blank (18) is covered with a second, anticorrosion coating (34) in a coating step.
Claims20
1-9. (canceled)
A method for the production of a press-hardened component from a semifinished product made of unhardened, hot-workable steel sheet and precoated with a first coating, comprising the following method steps:
- forming a component blank from the semifinished product by cold-forming;
- trimming the component blank at a margin to a marginal contour approximately corresponding to the component to be produced;
- heating and press-hardening the trimmed component blank in a hot-forming tool;
- and
- covering the press-hardened component blank with a second, anticorrosion coating.
A method for the production of a press-hardened component from a semifinished product made of unhardened, hot-workable steel sheet and precoated with a first coating, comprising the following method steps:
- heating and press-hardening the semifinished product in a hot-forming tool so as to define a component blank;
- trimming the component blank at a margin to a marginal contour corresponding to the component to be produced;
- covering the press-hardened component blank with a second, anticorrosion coating.
Dependencies are inferred from the claim text.