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Old 03-25-2013, 11:41 PM   #12979
DR Ozzy
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Joined: Feb 2012
Location: Adelaide
Oddometer: 578
"what's 'hard facing?"


Heat the face of the gear so that the hard carbon in the steel comes to the surface then cool rapidly to hold it there = tougher surface area ... http://www.youtube.com/watch?v=Lv5VSb4IKQE
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