Press-hardened component and method for the production of a press-hardened component

US8127449B2 · kind B2 · utility

Assignee

• Z.A.T. Zinc Anticorosion Technologies SA · CH

Inventors

• Michael Bayer · South Euclid, US
• Martin Brodt · Weil der Stadt, DE
• Leonid Levinski · Brussels, BE
• Victor Samoilov · Moscow, RU

Key dates

• Filing date: Jul 20, 2004
• Grant date: Mar 6, 2012
• Expiry date: Feb 21, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/8305
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

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.