US 2021/0268611 A1 · WELDING GAS COMPOSITIONS AND METHOD FOR USE

Abstract

The present invention relates generally to welding gas compositions used as shielding gases in an electric arc welding process. More particularly, the invention is directed a shielding gas compositions used in gas metal or tungsten metal arc welding processes for welding aluminum or aluminum alloy containing work pieces. The compositions comprise from 200 to less than 400 ppm oxygen; from 200 to less than 400 ppm of a second gas selected from nitrous oxide, nitrogen, and combinations thereof; and the remainder being an inert gas preferably selected from argon, helium, and mixtures thereof.

Claims9

Dependent claims

A welding gas composition for use as a shielding gas in an electric arc welding process for the welding of aluminum containing workpieces, said composition comprising:

from 200 to less than 400 ppm oxygen;
from 200 to less than 400 ppm of nitrous oxide, nitrogen or a combination thereof;
and
the remaining balance being an inert gas.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/318,557Filed 12 May 2021

Priority

16 Dec 2013

Published

2 Sep 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

B23K 35/38
Characterised by the composition or nature of the material: selection of media, e.g. special atmospheres for surrounding the working area
B23K 9/167
Making use of shielding gas: and of a non-consumable electrode
B23K 9/173
Making use of shielding gas: and of a consumable electrode
B23K 9/23
Arc welding or cutting: taking account of the properties of the materials to be welded

Welding gas compositions and method for use

Life of this patent

Welding gas compositions and method for use

Life of this patent

Abstract

Claims9