Vacuum Furnace Brazing IN-713 with BNi-2 1

[jsokal]

I am particularily interested in any comments related to the pre-braze preparation for IN-713 using BNi-2 braze alloy? Can this braze be accomplished without first applying a nickel plate of 0.0003-0.0006"? I have heard that only a nickel blast (Nicrobraze) can do the job.

 

[Goahead]

Previous nickel plating is necessary because the oxides of aluminum and titanium present in Inconel 713 (a precipitation hardening superalloy) are almost impossible to reduce in a vacuum furnace atmosphere.

http://www.welding-advisers.com/

 

[jsokal]

Thanks Goahead,
This is what I understood as well, thanks for confirming this. Some people overseas who are doing some brazing for us say that they can do it simply with an acid clean followed by a Nicroblast operation. I had my doubts, 6% Al is just way too much without plating.

 

[proptorudder]

I am not sure I am jumping in at the proper time here but I am looking for a manufacturer to produce a 713 inconel shaft 9mm +0.000 -0.015 in diameter and 102.18mm long. I under stand that this alloy requires a vacuum melt

 

[NickE]

proptorudder- generally its a good Idea to start a new thread when its a different question.

Try special metals corp, they make most of the inconel alloys in the us.