Apparatus for plasma arc spot welding and method therefor

Details Apparatus for plasma arc spot welding and method therefor Apparatus for plasma arc spot welding and method therefor

B - Operations, Transporting

23

K

B23K 9/007 (2006.01) B23K 9/10 (2006.01) B23K 9/12 (2006.01) B23K 9/16 (2006.01) B23K 10/02 (2006.01) B23K 11/11 (2006.01)

Patent

CA 2321629

Oxygen gas is added to at least either a plasma gas traveling though a plasma gas passage 19 or a shield gas traveling through a shield gas passage 29. When oxygen gas is added it is added so as to be present in an amount that is from 10 mol mol% to 100 mol mol%, and preferably 50 mol%, of the total flow rate of gas components therein exclusive of oxygen gas.

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