Method of resistance welding wires to a massive workpiece

US4203020A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Franz O. Armbruster · Aurora, US
• Albano Paoli · Mühlacker, DE
• Gerd Bassler
• Hans-Peter Sitka · Ludwigsburg, DE
• Gunter Schmidt · Reutlingen, DE

Key dates

• Filing date: May 24, 1978
• Grant date: May 13, 1980
• Expiry date: May 24, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K11/20
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method for producing strong resistance-welded joints between wires and massive workpieces, especially welded joints between nickel-plated copper wires and steel workpieces. The melting of the nickel coating is insured by producing locally high temperatures and pressures, due to the special configuration of the surface of the workpiece. The work surface is provided with bulges or protrusions which cause a concentration of electrical current and electrode pressure.