Welding of F11 buttered with Inconel 625

[arcpro]

Inconel,
Thanks for the valuable inputs. Actually, the buttering has already been made by manufacturer at his site. And the reason of buttering with Inconel 625 was to avoid PWHT after welding of nozzle-to-nozzle weld joint.
Here at site, we are just filling the weld joint with Inconel 82/182 consumables. I agree with you that the exact match for Inconel 625 is ER-NiCrMo-3 but at site Inconel 82/182 was readily available and we thought that it would be good to weld with this as Inconel 625 is not the process requirement. We just have to make a good weld which can be made by Inconel 82/182. Was using inappropriate welding consumable the main cause of cracking?

Abrar,
The purging gas we utilized was pure Ar 99.9%. How mixture of gases help during welding of inconel?
Please do share if you have any literature on the same.

[engr.abrar]

You can get some information on the following link regarding use of gas mixtures on welding

http://www.praxair.com/praxair.nsf/0/3a ... P-8201.pdf

[arcpro]

Thanks Abrar for sharing a very useful link.
It would be good if you please share your actual experience with welding of a nickel alloy as you mentioned in one of your post. Which nickel alloy was being welded, with which consumables and welding conditions? And what was the problem you encountered? Cracks?