Questions and Answers
What process involves heating above the transformation range and cooling slowly to soften the metal and increase in machining?
Annealing
What process involves heating above the transformation temperature and quenching in oil to increase the hardness?
Hardening
Which process involves reheating to a temperature below the transformation range followed by controlled cooling to attain desired properties of the metal?
Normalizing
What process involves heating to subcritical temperature and holding for a suitable time to reduce internal residual stress?
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What is the purpose of tempering in the heat treatment process?
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