Study on Penetration Form Using Stationary TIG Arc : Study on Low Speed DC-TIG Welding Method

概要

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Generally, in TIG arc welding method, the ratio of penetration depth (D) to bead width (W) is small and a deep penetration cannot be obtained. But in the case of using the static TIG arc when the welding conditions are set in a suitable range, the value of D/W is closer to unity and penetration becomes deep. Paying attention to the above mentioned phenomenon, We have made research into the practical application of the static TIG arc. In this paper, the welding conditions which we obtained from the above mentioned penetration forms were investigated using SUS304. It was found that when sulfur (S) content of the base metal is more than 0.005%, both the method of using the electrode with obtuse angle or with tip-cutting in argon shielding gas and the method of using helium as shielding gas are successful. In the case of using the base metal which contains sulfur about 0.001%, the method of using the tip-cutting elctrode in argon shielding gas is successful.
社団法人溶接学会の論文
1993-10-01