Tig welding equipment and tig welding method

Details Tig welding equipment and tig welding method Tig welding equipment and tig welding method

B - Operations, Transporting

23

K

B23K 9/16 (2006.01) B23K 9/167 (2006.01) B23K 9/29 (2006.01) B23K 35/38 (2006.01) C23C 8/10 (2006.01) C23C 26/02 (2006.01)

Patent

CA 2461317

A TIG welding equipment and a TIG welding method are described, capable of forming a welded metal portion deeply without lowering the welding quality, making the welding performance easier and improving the welding efficiency. The TIG welding equipment includes an electrode 2 for generating an electric arc 7 between itself and the welded object 10, a tubular inner nozzle 3 disposed surrounding the electrode 2, and a tubular outer nozzle 4 disposed surrounding the inner nozzle 3. A first shielding gas 8 composed of an inert gas can be supplied from the inner nozzle 3, and a second shielding gas 9 containing an oxidative gas can be supplied from between the inner nozzle 3 and the outer nozzle 4.

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