Types of Heat Treatment

Heat treatment is defined as an operation or combination of operations, involving heating and cooling of a metal or alloy in the solid state to obtain desirable properties. Heat treatment consists of three phases. (a)        Heating of the metal (b)       Soaking of the heat into metal (c)        Cooling of the metal Heating.       Heating temperature of metal for the purpose of heat treatment depends upon its grade, grain size, type and shape of a metal or alloy. Generally, the metal is never heated much beyond its upper critical temperature. Plastic…

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