Parameter Optimization of WAAM with Pulsed GMAW for Manufacturing Propeller-Shaped Blade

The experiments of wire arc additive manufacturing (WAAM) with general pulsed gas metal welding (GMAW) machine were performed to optimize process parameters. As optimized conditions, 140A current, 34 V voltage, 40 cm/min speed, and 15 mm contact tip work distance (CTWD), selected. Welding current voltage affected heat input. Lower deposition, short circuit mode, spatters obtained by insufficient melting previous layer lower height excessive speed CTWD surface state stability. Unsound bead shape due mode observed in slow conditions. Arc instability also fast long With the parameter, curved propeller blade was manufactured change robot arm teaching point. It can be considered that desired sufficient quality shape.