Hi,
I am creating a new WPS for hardfacing overlay of AISI 4130 Q&T using the parameters below:
Base metal Tensile: 655 MPa; Hardness: 235 HBW
Filler: Stellite 6 (SFA-5.21; ERCoCr-A)
Process: GTAW
Preheat temp: 225ºC
Current: 90-94 A
Voltage: 10-13 V
Travel Speed: 50-90 mm/min
Heat Input: 0.921...