Method for the production of a sheet metal part by forming

US6185977A · kind A · utility

Assignee

• AUDI AG · DE

Inventors

• Gerhard Schiessl · Augsburg, DE
• Hans Bergmann · Bayreuth, DE

Key dates

• Filing date: Jun 18, 1999
• Grant date: Feb 13, 2001
• Expiry date: Jun 18, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D2221/02
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A process of forming a sheet of metal having varying material thickness corresponding to selected strength and/or stiffness requirements generally consisting of varying the degree of heat applied during drawing of the metal to correspondingly vary the elongation coefficient of the sheet across the surface thereof.