Javan C.R. Dempsey Posted September 28, 2011 Share Posted September 28, 2011 Might should have posted this in the HT section, but I didn't. Trinculo hooked me up with some nice unhardened 4140 dies for my Bull, and I'm looking for some advice on quenching. I've got a vertical blown gas forge that I can take the lid off of, and fit just the working portion of the dies into the forge, so getting them up to temp shouldn't be that hard. I'm going to heat them in sessions to try and even out the heat as much as possible, but I'm uncertain about quenching these. I've got 5 gal of really fast quench oil, Park HB #50, and I've also got plenty of canola. Will 5 gal of either of these be sufficient? The weight calculator tells me the actual weight of the die block itself should only be 3.4lbs, so that's below the 1g per lb rule I've heard tossed around, but the weight with the base plate is ~11.5lbs. The Parks 50 should be the closest approximation to water quenching for 4140, but it's expensive oil and I dont' want to overheat it, it's gentler than water so should harden well, but maybe I need to go with a higher volume of canola? I've only got 5gal of it atm, and not sure I've got a tank big enough for anything larger. Could I put my quench tank into a big tub of water? It's thin walled SS, but maybe not conductive enough to do any good? Thanks! Quote Link to comment Share on other sites More sharing options...
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