Method for beam welding of hardenable steels by means of short-time heat treatment

US6365866B1 · kind B1 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• Arnold Maschinenfabrik GmbH & Co. · DE

Inventors

• Berndt Brenner · Heidenau, DE
• Rudiger A. Gnann · Ravensburg, DE
• Dietmar Naunapper · Oberrimsingen, DE
• Carsten Duschek · Dresden, DE

Key dates

• Filing date: May 3, 1999
• Grant date: Apr 2, 2002
• Expiry date: May 3, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K26/60
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The invention concerns a method for beam welding of hardenable steels using a short-time heat treatment. A preferred area of application of the invention is motor vehicle and mechanical engineering. In the method according to the invention, the short-time heat treatment occurs first as the sole preheating in a defined manner, and then the beam welding begins after a defined cooling time, at the latest.