SUS 304 溶接鋼管のプラズマ-ティグタンデムシステムに関した研究
溶接速度に及ぼす水素ガス量の影響
1993 年 31 巻 4 号 p. 221-226
詳細
1993 年 31 巻 4 号 p. 221-226
An experimental test of the welding system shielding gas variation (H2 GAS) on plasma-TIG tandem system, was carried out in a commercial line to make SUS 304 stainless steel welded pipe of 150φ outside diameter, 3mm wall thictness. A shielding gas equipment were set to increase of hydrogen content of 5%, 10%, 15% respectively, in argon atmosphere. A plasma torch was located 20mm before the second squeeze roll and a TIG torch was located 200mm after second squeeze roll. An available speed of the plasma-TIG tandem system could be at least doubled by the change of hydrogen gas volume rate 5%, -15%, and satisfactory weld quality was obtained.
