January 7, 201214 yr Author great thanks a lot for the info, that helps me understand it a lot better, do you run up to the desired temp in a short time or do you ramp up slower, is this part of the two hour tempering?
January 8, 201214 yr Once you get the correct temperature dialed in you can set your oven to it and not fiddle about with the experimentation. As long as you are using known material, or at least a piece of material that you have tested, you should be good without intermediate steps. If you are using scrap, you need to test every piece or parent stock. I have some coil springs, pulled from the same vehicle and presumably of the same manufacture and age that act differently when hardened. I can harden one in oil, the other needs water...teach me to cut up a second spring before I was finished with the first! Phil
January 10, 201214 yr I set the tempering temp then I insert steels, 2 hours later turn it off and a hour or so later return to remove form the oven. I let them cool in the oven. It wont hurt.
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