.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
dallen, proud to be a member of MetalworkingFun Forum since Apr 2012.

If life seems normal, your not going fast enough! Tongue
Reply
Thanks given by:


Messages In This Thread
RE: .311 hole in 4140 that needs heat treating - by dallen - 03-02-2016, 09:41 AM



Users browsing this thread: 10 Guest(s)