lanternnate Posted March 19, 2017 Share Posted March 19, 2017 I've been searching through threads here and elsewhere, and I've found plenty of guides through from start to finish. I'm looking for some guidance on restarting when things didn't work out. I had a go today at heat treating some 5160 blades. First time trying 5160, so these were two practice pieces I had made to make sure I had the full process down before mangling something with more time invested. Propane forge was the heat source and preheated canola oil was the quenchent. The first attempt did not result in a hardened blade (file dug in). I believe my mistake was going too soon after hitting non magnetic and not getting quite hot enough. I reheated, this time holding a little longer past non magnetic and requenched. It hardened this time, but also took a nasty warp. The second blade I gave the extra time past non magnetic on the first go round and it hardened and also did not warp at all. Blades were not the same profile but we're the same thickness (1/8" approximately). I figure it's always possible that odds just resulted in one warp and one no warp, but I'm wondering if I needed to do something to "reset" after the initial fail. If I had gone all the way back to the beginning of the process and done 3 rounds of normalizing over again would that have reduced the chances of warping? Quote Link to comment Share on other sites More sharing options...
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