電気熔接に適する高張力鋼の研究

概要

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Vast application of electric welding to ship works for weight and labour saving has required good high tensile steels, as HT and D steels, being satisfied for ord nary practice, are unsuitable for very high temperature treatment of arc welding due to their high contents of carbon and manganese. So 13 sorts of high tensile steel of various contents are studied to improve the demerit. Investigating the test result of these samples against mechanical properties, weldability, and strength of welded joint, Si-Mn steel (C 13%, Si 1.0% Mn 0.8%) proved to be the most su table one. As to the test for weldability, it seems to be necessary to examine for hardening ratio of test pieces heat-treated similar to affected zone by welding heat to raw material, and moreover to investigate the condition of ruptures of test pieces heated actually by the same manner as welding.
社団法人日本船舶海洋工学会の論文