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CuNi 90/10 weld overlay on carbon steel

CuNi 90/10 weld overlay on carbon steel

(OP)

Hi Experts,

We need to overlay CuNi 90/10 alloy on carbon steel flanges IS 2062 . Deposit thickness is about 3mm premachining. See drawing http://files.engineering.com/getfile.aspx?folder=4...

Overlay on dia B1 and flange side C1 and C2

Do suggest the best process for optimum results ( Tig / Mig / Arcspray ).

Thanks in advance

RE: CuNi 90/10 weld overlay on carbon steel

70/30 Cu Ni alloy filler metal should be used.

RE: CuNi 90/10 weld overlay on carbon steel

If you need 90/10 your best bet is to use a butter layer followed by deposition of 90/10. I would use auto GTAW.

RE: CuNi 90/10 weld overlay on carbon steel

As per metengr, use 70/30 Cu Ni as the butter layer. Ni could also be used. The 70/30alloy will most likely provide superior corrosion resistance.

RE: CuNi 90/10 weld overlay on carbon steel

(OP)
Thank you for the response Weldstan and metengr. Will follow the same procedure.

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