耐食性アルミニウム合金 ANP 板の消耗電極式アルゴンアーク熔接の研究(第 2 報) : 熔着金属内の気孔の発生と割れについて

概要

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Various tests on the inert-gas metal arc welding of a corrosion resisting aluminum-manganese alloy "ANP", have been performed with ANP-O and ANP-1/4H plates, 1/4 in. in thickness, and various consumable electrode wires, 52S, A54S, 56S and ANP. The present report Part 2 discusses the effects of welding conditions, surface treatments, filler wires, preheat and back-chipping on the occurence of porosities in bead weldior buutt weld, as well as the cracking tendencies of various filler wires in welding a slit-type cracking specimen. The essential factors to prevent porosities have been shown to be; chemical cleaning of filler wire, adequate arc length, higher heat input, less magnesium content, proper backing and precautions in the back pass, that is, back-chipping, slower welding speed or preheat. Electrode wires, ANP and A54S, were the least crack-sensitive.
社団法人溶接学会の論文
1956-11-25