高融点金属材料の電子ビーム溶接条件に関する研究 : 電子ビーム溶接に関する研究 (2)

概要

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Optimum weld heat inputs for electron-beam welding of sheets of various refractory metals such as titanium, zirconium, niobium, molybdenum and tungsten were investigated by theoretical and exprimental methods. The conclusions are as follows : (1) The exprimental optimum weld heat input up to 60cm/min of welding speed (V, cm/min) is given by Optimum weld heat input=(3.8∿4.4)×(10)^<-3>×(C_<20>・ρ_<20>・T_m)^<1.5>×t^<1.3>×V^<-0.65> where, C_<20> (cal/gr℃) is specific heat at 20℃, t(mm) thickness, ρ(gr/(cm)^3) density, and T_m (℃) melting point (2) In the above equation, V^<-0.65> is gradually changed to V°at higher welding speed range than 50cm/min. Then the experimental equaton agrees with the theoretical equation. (3) Weld heat inputs by electron-beam welding are 1/2 to 1/3 times smaller than by TIG welding. Therefore, electron-beam welding is more effective welding method for refractory metals sheets.
社団法人溶接学会の論文
1963-04-25