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CoCr-A/Stellite 6 overlay to Monel400

CoCr-A/Stellite 6 overlay to Monel400

CoCr-A/Stellite 6 overlay to Monel400

(OP)
Our base material Monel400 and weld overlay CoCr-A/Stellite 6 powder, PTA/PAW(Plasma Arc Welding) process.
Pre-heat to 250°C before welding. After welding found to be more porosity & improper fusion.
Please advise for correct procedure.

RE: CoCr-A/Stellite 6 overlay to Monel400

Either change your PTA parameters or consider putting down a NiCr (low C) bond layer.

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P.E. Metallurgy, Plymouth Tube

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