Parameters effect on SS304 beads deposited by wire arc additive manufacturing

In the present study, the effect of process parameters in Wire Arc Additive Manufacturing (WAAM) of Stainless Steel 304 as filler wire and mild steel as a substrate has been investigated. The deposition was made by using the Cold Metal Transfer (CMT) process. Single-pass beads are most useful for remanufacturing and repairing purposes. The quality of cladding for additive manufacturing predominantly depends on bead geometry. Hence, it is required to have an optimum range of bead parameters to ensure the desired mechanical properties. Response surface methodology and ANOVA were used to estimate the effects of current, weld speed, standoff distance on bead characteristics. Multiple regression models were developed to relate process parameters to bead quality.