Gordon England Surface Engineering Forum



Re: A286 SS Build Up


Posted by Gordon England on January 08, 2004 at 04:44:24:

In Reply to: Re: A286 SS Build Up posted by john on January 06, 2004 at 18:14:08:

: Sorry first email address wrong.

: : I have project that requires a dimensional restoration of A286 SS prior to applying an 88/12 WC-Co. I am considering Diamalloy 4006 or JK 513 (316 SS). Build-up thickness to be 0.005 - 0.010" Final WC-Co to be 0.002 - 0.004".

: : I also need to strip the existing 88/12 WC-Co.

: : Any suggetions would be appreciated.


Hi John

I don't see any problem generally with what you propose. Are you planning on machining the initial coating for dimensional restoration before spraying the WC/Co coating? If so, care will be needed in grit bast preparation of the machined coating. If this is not necessary, you could consider applying the total thickness as WC/Co as this should not be a problem with the total thickness you indicate.

Diamalloy 4006 and 316 s/s at this thickness level should be ok, but if you need to restore more significant dimensions, I would choose less stressful coatings like 4008 NiAl (arc spray NiAl or 13Cr steel works well with very thick build-ups).

Regards Gordon


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