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Weld zone
Jul 18, 2018

The joint metal and filler metals are melted and then cooled and solidified after a relatively fast cooling rate. The weld microstructure is composed of liquid metal crystallization as cast microstructure, coarse grain, segregation of components and Uncompact structure. However, because of the small welding pool, fast cooling and strict chemical composition control, carbon, sulfur and phosphorus are low, and the chemical composition of the weld is adjusted by the alloying alloy, so that it contains some alloy elements. Therefore, the performance of the weld metal is not very serious, it can meet the performance requirements, especially the strength is easy to reach.