5 Questions
Which process involves heating above the transformation range, usually 1300oF to 1350oF, and cooling slowly to soften the metal and increase in machining?
Annealing
Which process involves heating above the transformation temperature and quenching usually in oil, for the purpose of increasing the hardness?
Hardening
Which process involves reheating to a temperature below the transformation range, followed by any desired rate of cooling to attain the desired properties of the metal?
Normalizing
Which process involves heating to subcritical temperature, about 1100oF to 1300oF and holding at that temperature for a suitable time for the purpose of reducing internal residual stresses?
Stress relieving
Which process involves heating some 100oF above the transformation range with subsequent cooling to below that range in still air at room temperature to produce uniform structure of the metal?
None of the above
Test your knowledge of heat treatment processes with this quiz! Identify the correct technique for softening, increasing hardness, and reheating metal. Will you ace it? Find out now!
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