07-15-2005, 01:46 PM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Tuftride, Melonite and Tenifer are the same thing essentially, Salt bath nitrocarburization.
All three names are trademarks of Durferrit; in Europe they call the process Tenifer, in the USA it is sold as Melonite, and in other countires they call it Tuftride.
Similar proceses include Kolene Nu-tride, and anything else with "QPQ" in the name.
It is a heat treat that infuses nitrogen into the steel lattice near the surface, that increases surface hardness and rust resistance, along with reduced scuffing. They also black oxide it, polish that off, then blacken it again.
The local place around here that does it is Burlington engineering.
http://www.burlingtoneng.net/melonite/default.asp
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In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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