PTA welding on hard materials by nature - inconel,monel & duplex material

[dhish]

dear friends,
can you please suggest me the best possible technique to perform Stellite powder coating BY PTA welding on hard materials like monel & inconel? i found difficulty and components often got rejected..please give me your best suggestions.

Regards.

 

[hsbcn]

Different methods and techniques apply to different underlying alloys. Have a look at the attachment, which should help you specify your query.

I work with valves in exotic alloys at alloy-valves.com. This is me on Twitter and LinkedIn. Let's connect!

 

[mgh70]

Why were the components rejected? Micro fracturing?