DocDrew Posted August 2, 2006 Share Posted August 2, 2006 I'm using some bearings (a ball and a pin) to make some power hammer dies. I annealed successfully with vermiculite cooling, looking for suggestions for reharding-- air quench, water, oil, brine? Quote Link to comment Share on other sites More sharing options...
rthibeau Posted August 2, 2006 Share Posted August 2, 2006 bearings as in 52100 stuff? Oil, for sure I would say. Quote Link to comment Share on other sites More sharing options...
DocDrew Posted August 2, 2006 Author Share Posted August 2, 2006 Don't know exactly what they're made of, the usual scrap finds. Recommendations for what kind of oil? I've heard you can use vegetable oil. Yes? No? Quote Link to comment Share on other sites More sharing options...
Rich Waugh Posted August 2, 2006 Share Posted August 2, 2006 Yes, veggie Quote Link to comment Share on other sites More sharing options...
rthibeau Posted August 2, 2006 Share Posted August 2, 2006 Depends on if you want the wife to hang around the shop. If not, use fish oil or that from a fried fish joint, or motor oil from a '58 Buick that died awhile ago. Almost any oil will do. Quote Link to comment Share on other sites More sharing options...
clang Posted August 21, 2006 Share Posted August 21, 2006 Having used some really nasty stuff for quench oil, including PCB laden transformer oil ( worked real well!) and lots of drain oil...i'd say, go for deep-fry oil. When it starts to go rancid, either trade it in or cover it up and wait a few months. However, rancid quench oil and a big glowing bar of steel will rid your shop of gawkers, wives and tourists pronto. Quote Link to comment Share on other sites More sharing options...
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