Dimensional modeling of single pass welding in wire and arc additive manufacturing

Wire and arc additive manufacturing is a technology to fabricate solid metal components by layer-by-layer surfacing using arc as energy carrier beam. Wire and Arc Additive Manufacturing has the advantages of high material utilization, high molding efficiency, low equipment cost and unlimited size of molded parts, etc., which has received wide attention from scholars in various countries. However, poor forming accuracy limits the development of this technology. In this paper, a quadratic regression model between weld pass size and welding voltage, welding current and welding speed was established by using the quadratic universal rotary assembly experiment method in single-layer single-pass Wire arc additive manufacturing test. The model could effectively predict weld pass size.