Effects of Water Temperature on Cracking of Wet-Welded Carbon Steel

摘要

Industry generally accepts that carbon steel shielded metal arc welding electrodes can be used to wet-weld carbon steel base metals without incurring hydrogen-induced un-derbead cracking, as long as the carbon equivalent of the base metal is approximately 0.40 or less. At higher carbon equivalents, austenitic wet welding electrodes can be used to avoid such cracking. ANSI/AWS D3.6-93, Specification for Underwater Welding (Ref. 1), lists both the carbon equivalent and carbon content as essential variables during wet welding procedure qualifica- tion.