Patent · US Expired

Electrode for the TIG welding process

US4508955A · kind A · utility

0Cited by

2References

3Claims

0Family size

Assignee

Motoren- und Turbinen-Union Munchen GmbH · DE

Inventors

Michael Muller · Munich, DE
Dietmar Mautner · Herbertshausen, DE

Key dates

Filing date	Mar 12, 1984
Grant date	Apr 2, 1985
Priority date	—
Expiry date	Mar 12, 2004

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K35/222
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An electrode suitable for the TIG welding process, in which the welding arc produced by contact-less ignition between the tip of the electrode and the workpiece burns within an inert gas atmosphere and the application of the weld material is effected by a separately guided welding rod. In order to optimize the startability, the tungsten electrode has a thorium oxide content of 2-4% and a thorium-oxide particle size of 6-12 .mu.m.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.