I don't think it is possible to use the housing directly. I think we
 need to bond to sheet aluminum and

furnace braze that to> > the housing.
Paul Lamar> 

This is understood, I am refering to the final brazed assembly. The surface of the plate will need to

be ground and lapped after brazing before nitriding. To the non machinists out there any machining operation puts stress into the part, or in some cases
releases it. Even a thin cut on a forged or cold worked material will cause a major warpage. Grinding is usually the lowest stress inducing typical
operation.> Bill Jepson> Bill,

I was under the impression the surface would need to be lapped (again) after the nitriding. What is your take on that? Could the lapping wait until the

nitriding is done?

    Jim Brewer

 
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