Process and gaseous mixture for arc welding of aluminium components

US5667702A · kind A · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Richard Soula · Pontoise, FR
• Didier Marchand · Saint-Germain-en-Laye, FR
• Henri Diot · Saint-Ouen-l'Aumône, FR

Key dates

• Filing date: Sep 4, 1996
• Grant date: Sep 16, 1997
• Expiry date: Sep 4, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K2103/10
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The arc welding, with a refractory electrode, using alternating current, is performed with a gaseous protective mixture employing, at the location of the weld, at least 60%, typically between 70 and 80% of helium and more than 1000 vpm, typically between 1100 and 1200 vpm, of carbon dioxide, the remainder being argon. Application to manual or automatic welding of aluminium components.