.311 hole in 4140 that needs heat treating
#10
heat the part in molten salt to the temp you need when you drop it in oil the salt will peel off and you will have a nice clean maybe blue colored part, depending on the salt used. regular table salt melts around 1600 degrees F
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RE: .311 hole in 4140 that needs heat treating - by dallen - 03-02-2016, 09:41 AM



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