We were successful applying the Stellite 6 to the carbon steel substrate without indications. After a 24hr. slow cool we performed a dye penetrant test and passed. We sent it off to PWHT and then to the machinist, after they machined the piece it passed another dye penetrant test. For some...
In reading about stellite 6 i have noticed that the "buttering" step is usually involved. However, my wps shows only RCoCr-A as the deposited material.
Our wps states a preheat of 500 F we have maintained that. With a maximum 650 F interpass temp. we have maintained that. minimum 2 layers of overlay. why are we getting cracks in the second layer? not the first. tig process,1/8" filler.
