電子ビーム溶接の利用に関する研究(第 1 報) : 高電圧ビームによる溶込の形状について

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This report describes the characteristics of the weld penetration shape by high-voltage electron beam. Included in this study were an investigation of the effect of welding conditions on the penetration shape for stainless steel and aluminum and the relationship between the species of metals and weld penetration. Results from the studies on the weld penetration shape are summarized as follows. 1) The penetratson shape for stainless steel are peculiar having a bowl-shaped part in the weld penetration. Increasing the accelerating voltage the penetration becomes narrower and deeper. The penetration depth is nearly proportional to the welding input and has no relation with the accelerating voltage in our experimental conditions. If the beam happens to pierce the specimen (over-penetration), the bead width suddenly decreases and the bowlshaped part disappears. 2) In the case of aluminum, triangular-shaped penetration with relatively wide bead is formed differs from the stainlesss teel welding. The penetration increases proportionally with increasing welding input in the range over 400 watts. The penetration ratio for aluminum are no more than 2 and it indicates a shallow and wide weld bead. 3) Investigation of weld penetration shapes on various metals shows thst shapes on steel material are narrow and deep but are nearly triangular and shallow on other metals. The prediction of the penetration depth is generally possible from the physical values, especially, thermal diffusivity and heat required for melting the metal.
社団法人溶接学会の論文
1964-11-25

電子ビーム溶接の利用に関する研究(第 1 報) : 高電圧ビームによる溶込の形状について

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