B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 9/16 (2006.01) B23K 9/173 (2006.01) B23K 35/38 (2006.01)
Patent
CA 2073840
A method of welding metal products, at least one of which being made of nickel or a nickel alloy, comprises the steps of generating an arc between the products to be welded serving as a positive pole and a tungsten electrode held by a welding torch serving as a negative pole, emitting a shielding gas consisting of an argon-based mixed gas containing one or both of hydrogen and helium from a confining gas nozzle concentric with the tungsten electrode, thus confining the apparent flaring angle of the arc within 80 degrees, and moving the welding torch along the weld line while feeding the tip of a filler wire to a part of the molten pool directly below the arc. This method is applicable to the welding of metal products, at least one of which is made of nickel or a nickel alloy.
Imaizumi Hiroshi
Kashimura Hideki
Katayama Kiichi
Katou Toshio
Murakami Yasuo
Aichi Sangyo Co. Ltd.
Fetherstonhaugh & Co.
Nippon Steel Corporation
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