TIG 溶接による裏波ビード形成主要因と溶接条件との相関性

概要

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Experimental studies were carried out on the formation of penetration beads. To investigate the effects of welding conditions on the shape of TIG-penetration beads, mild steel, stainless steel and aluminium alloy were welded. The results obtained are as follows : (1) The penetration relates with the width bw and cross sectional area Am of the welds. (2) These experimental results agree with values analysed by two dimensional interfacial tension theory. (3) Relation between bead width bw and welding heat input is obtained by calculations of two dimensional heat conduction theory (using physical properties in the solid state near to the melting point and heat efficiency η=0.6). Relation between bead area Am and wire feeding is also obtained by calculations from bt (≒Am/bw).
1980-05-05