The effects of welding current and welding speed on the forming quality and mechanical properties of high nitrogen steel straight wall formed by TIG arc additive were studied. The results show that the weld width and weld height are inversely proportional to welding speed but proportional to the welding current. When the welding current is 178 A, the welding speed is 0.28 m/min and the wire feeding speed is 1.9 m/min, the forming quality of straight wall body is the best. The microstructure of TIG surfacing...
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