Method and apparatus for producing hardened formed parts

US8707751B2 · kind B2 · utility

Assignee

• BENTELER AUTOMOBILTECHNIK GMBH · DE

Inventors

• Christian Hielscher · Ritterhude, DE
• Markus Pellmann · Sassenberg, DE

Key dates

• Filing date: Mar 17, 2011
• Grant date: Apr 29, 2014
• Expiry date: Nov 22, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C38/04
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a method of producing a hardened formed part, in particular for a structure or body part of a motor vehicle, a metal blank is heated and then hot formed in a cavity of a thermoforming mold to produce a formed part. The formed part is hardened in the cavity of the thermoforming mold through contact with a coolant fed into the cavity via feed channels, whereby a state of aggregation of the coolant is adjusted or the coolant is maintained at a pressure above the steam pressure.