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Old 07-28-2008, 09:33 AM
jt20 jt20 is offline
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Join Date: Mar 2008
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Quote:
Originally Posted by Mustang_man298 View Post
Ahh, but be careful on this, true that cranks are hardened...in certain places such as journal surfaces to certain depths. The entire crank is not and cannot be hardened completely, it would shatter quickly if that were the case since cranks actually do flex back and forth at the rod journals with each combustion cycle from the sudden explosive forces, and hardened steel is very brittle, unable to absorb that. As to whether or not the snout is hardened, I don't know for sure, but have my doubts since it is not a heavy load wear surface as a bearing journal would be.

very sorry, but I believe that is completely wrong. Nitride hardening occurs on the entire surface of an item. It is heated evenly and completely in a type of gas bath. There is no reasonable means of nitride hardening specific locations on larger items.

http://www.longwear-nitriding.co.uk/htm/benefit.htm
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