WELD TOUGHNESS IMPROVEMENT METHODS OF EGW WELDING LOW-TEMPERATURE PHASE TRANSFORMATION CUT WIRE USE

摘要

The present invention relates to a kind of improvement toughness, when welding EGW welding, and more particularly, to a kind of improvement toughness, when electric arcing gas welding low-temperature phase modified line. According to the present invention, the welding of EGW welding materials is inserted into during wire cutting type low temperature phase change. In addition, the part welding that low temperature phase change is embedded into the welding top portion of the welding material between at least one is completed, therefore, when the weld part that transformation generates, base metal is converted into the high ability test of toughness crackle (Kca) value, conversion is propagated and stops. It is adequately converted to run to base material, mechanism in weld part as localized compressive residual stress generates, is used for target part using low temperature conversion (LTT) welding material; A kind of method, to be deployed in electric arcing gas welding (EGW) wire cutting model, selection transformation stops, and toughness welding increases. ;The 2015 of copyright KIPO submissions