Gas composition for arc welding

Details Gas composition for arc welding Gas composition for arc welding

2006-07-04

2006-07-04

Shaw, Clifford C. (Department: 1725)

Electric heating

Metal heating

Nonatmospheric environment at hot spot

C219S1370WM

Reexamination Certificate

active

07071438

ABSTRACT:
The disclosed invention is a composition and process for employing a shielding gas in arc welding. The disclosed composition includes oxygen in an amount between about 0.6% and about 1.9%, helium in an amount between about 10% and about 24%, and the remainder consisting essentially of argon. The invention can be used in high-speed automated welding to result in significantly improved welding speed, joint fit-up tolerance, and burn-through minimization while maintaining excellent mechanical characteristics.

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