Quote:
Originally Posted by zrayr
post #3 above has a link to comp cams nitriding info page. there is also a pdf download on the comp cam info page for more detail. For non- roller cam applications getting the nitriding treatment seems to be a smart move.
Z.
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The Navy did not use that process, they submerged the parts in nitric acid for a measured length of time and rinsed several times, thats all.
Also used saline solution with dc current to de-burr and do some machining in late 60's.
I think industry has adopted some of this also.
I remember a beautiful piece of work, a 40mm machine gun barrel. bright chrome inside bright black chrome outside.
We found that out of all the coatings we used, a very light [flash] coat of
zinc chromate prime coad with a proper coat of paint was the most important for the exterior protection.
The phosphate coatings are very good under paint or for a lubed surface.