鋳造モデルによる溶接金属凝固挙動の研究

概要

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Weihave studied the welding conditions which made the pear-shaped bead and also learned the relations between the coefficients of bead shape (P/W, Wm/W and A/P) and it's crack in the former reports. In this report, we studied the heat flow to welding divaction and the solidification pattern in the foundry model similar to the pear-shaped bead. At first, we investigated the heat flow in the welding bead changing it's speed and conducted that at the welding speed over a certain limit, the heat flow could be considered as 2-dimentional flow on a plane perpendicular to the welding line. Next, we made foundry models similar to the pear-shaped bead and studied the solidification pattern in it. From these results, we conjectured the location and the cause of the pear-shaped bead crack.
社団法人溶接学会の論文
1980-02-05