US 11,878,374 B2
Welding gas compositions and method for use
Philip L. Miller, Corfu, NY (US); Kevin A. Lyttle, Williamsville, NY (US); Jeremy B. Neff, Boston, NY (US); Douglas A. Steyer, Orchard Park, NY (US); and Keith G. Pierce, East Amherst, NY (US)
Assigned to PRAXAIR TECHNOLOGY, INC., Danbury, CT (US)
Filed by Philip L. Miller, Corfu, NY (US); Kevin A. Lyttle, Williamsville, NY (US); Jeremy B. Neff, Boston, NY (US); Douglas A. Steyer, Orchard Park, NY (US); and Keith G. Pierce, East Amherst, NY (US)
Filed on May 12, 2021, as Appl. No. 17/318,557.
Application 17/318,557 is a division of application No. 14/107,275, filed on Dec. 16, 2013, granted, now 11,040,417.
Prior Publication US 2021/0268611 A1, Sep. 2, 2021
Int. Cl. B23K 35/38 (2006.01); B23K 9/23 (2006.01); B23K 9/173 (2006.01); B23K 9/167 (2006.01); B23K 103/10 (2006.01)
CPC B23K 35/38 (2013.01) [B23K 9/167 (2013.01); B23K 9/173 (2013.01); B23K 9/23 (2013.01); B23K 35/383 (2013.01); B23K 2103/10 (2018.08)] 8 Claims
OG exemplary drawing
 
1. 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 consisting of:
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.