How can to weld CuNi to Carbon Steel (API 5L X52)

[Thuhuongengineer]

Hi friend,
I have to weld CuNi to Carbon Steel (API 5L X52), Butt weld, thickness 5-7mm.
Which is welding consumable?
Which is Process (GTAW or Brazing..)
Which is parameter (Heat treament, Pre-heat.....)

Pls give me advice.

 

[stanweld]

You can use specific aluminum bronze fillers, nickel filler F41, ERNi-1.

 

[gtaw]

What is the application? What are the operating parameters? What welding standard applies? What welding processes are available? Is there a preference for one welding process over the others? What are the production requirements, i.e., one piece versus many pieces?

Best regards - Al

 

[stanweld]

I should add that GTAW process is recommended if you weld, although I have used pulsed GMAW for this joint as well. Preheat/PWHT will be based on Code requirements and thickness to be welded.
Is the joint configuration amenable for brazing?