管内水冷溶接による SUS 304 鋼管溶接部の残留応力および鋭敏化軽減法

概要

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This report covers experimental results on the relation between welding methods (natural cooling and inside water cooling) and residual stress and carbide precipitation in heat affected zone of 2B, 3B, 4B, 8B and 12B welded austenitic stainless steel pipes. The results of this experiment are as follows : (1) The inside surfaces of pipe welds by natural cooling show tensile residual stress. (2) The inside surface of pipe welds with inside water cooling in appropriate conditions show compressive residual stress. (3) The weld sensitized zone of pipe welds can be reduced by inside water cooling technique. From the above results, it is considered that the inside water cooling method is effective to prevent SUS 304 pipe weldment from stress corrosion cracking.
社団法人溶接学会の論文
1979-10-05