| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.33 ( January 1996 ) Welding, Logistics, and Environmental Engineering ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| High-Efficiency Submerged Arc Welding for Corner Joint
of Box-Shaped Columns* Shuichi Sakaguchi, Tadamasa Yamaguchi, Yoshifumi Nakano |
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Synopsis : The effects of the addition of iron powder to agglomerated flux on welding performance and the optimum welding conditions for high heat input welding were investigated. The main conclusions obtained are as follows: (1) The addition of iron powder to flux increases the deposition rate and improves welding operability. (2) The cross sectional profile of the bead was influenced by the current ratio of the trailing electrode to the leading one. The optimum range of the ratio for avoiding the weld defect is ranging between 0.70 and 0.80. (3) The use of flux-containing iron powder together with the optimum welding conditions enabled the development of the high-efficiecy welding techniques such as the tandem-wire one-pass submerged arc welding for the plates not thicker than 60 mm and the two pass welding for those thicker than 60 mm. |
| TextiPDF: 6p./306kbj |