Method for manufacturing components by critical formation of light metal strip

US6221185A · kind A · utility

Assignee

• Michelin Kronprinz Werke GmbH · DE

Inventors

• Wolfgang Tanzmann · Solingen, DE
• Helmut Tummler · Hilden, DE
• Ralf Duning · Solingen, DE
• Uwe Gohrbandt · Haan, DE
• Peter Von Czarnowski · Bloomfield, US
• Gerhardt Sollner · Sankt Augustin, DE

Key dates

• Filing date: Feb 26, 1999
• Grant date: Apr 24, 2001
• Expiry date: Feb 26, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a method for manufacturing components from critical cold forming of light metal strip, preferably naturally hard Al alloys of the AlMg or AlMg--Mn types, in which the desired component is manufactured from the strip by at least one cold forming step and the plasticity is improved before the cold forming by means of a soft annealing. According to the invention, it is proposed that the region of the longitudinal edges of the cold-slit strips is heated in a depth in the strip width of at least 1 mm to a maximum of 10 mm in such a way that a temperature of over 150.degree. C. is reached over a time span of more than 0.1 seconds to a maximum of 10 seconds.