脱酸劑を含む鋼用ガス熔接棒の化学組成および熔接諸條件の影響について(第 4 報) : 熔接後熱の影響および結論

概要

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In this report, effects of post heating on mechanical properties of gas weld steel were investigated. The results obtained are as follows. Welds made by continuous welding operation, depositing multilayers, were remarkably improved by torch normalizing. Judging from the results mentioned in Report 1-4,the authors recommend to use the clean welding rod made of low carbon steel containing 1.3-1.5% Mn and 0.1-0.3% Si to obtain excellent weld for mild steel. Very good welded joints are obtained by using above mentioned welding rods and adopting the following welding conditions : 1) Dissolved acetylene and neutral flame, 2) Comparatively large diameters of rod and nozzle, 3) To deposit layers not exceeding about 5mm in thickness, 4) To have each layer cool in still air at some intervals, 5) Backhand and weaving techniques for thicker plates. The low-carbon steel welding rods containing about 1,6-1,8% Mn and 0,1-0,3% Si appear to be high tensile suitable for high tensile steels.
社団法人溶接学会の論文
1955-04-01