Furnaces Used for Heat Treatment

Heat treatment furnace may be defined as a refractory-lined chamber in which the metal part to be heat-treated, is heated to the required temperature. Usually a heat-treatment furnace is a box-like structure i.e., a steel shell with an access door, a refractory lining, temperature controls and indicators. Furnaces used for heat treatment are classified as: (a)    Hearth furnace             (i)         Stationary hearth furnace             (ii)        Movable hearth furnace (b)    Bath furnace             (i)         Salt bath             (ii)        Lead bath             (iii)       Oil bath Stationary Hearth Furnaces        These are of…

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