アーク溶接の溶融池現象に関する界面張力論的解析(第 1 報) : 裏波溶接における溶融池の保持限界

概要

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The equilibrium and stability of molten pool in I-butt welding are discussed under the condition that arc pressure is negligibly small. The critical molten pool size for Rayleigh-Taylor Instability is made clear and compared with the permissible molten pool size, derived from the static equilibrium of surface tension and gravity. In conclusion, the critical size of molten pool in flat positional welding without backing can be explained by the disturbance of the above mentioned static equilibrium. On the other hand, the molten pool phenomenon in overhead positional welding is disturbed by Rayleigh-Taylor Instability. Consequently, in order to avoid this instability, it is necessary to limit the molten pool to small size at this position.
社団法人溶接学会の論文
1979-10-05