CuNi 90/10 weld overlay on carbon steel 2

[saanu]

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/getfil...1-83f1-73919c506fe3&file=TYPE-18B_001_(2).jpg

Overlay on dia B1 and flange side C1 and C2

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

Thanks in advance

 

[weldstan]

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

 

[metengr]

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.

 

[weldstan]

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.

 

[saanu]

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