Introduction to Heat Treatment

Heat treatment is an operation or combination of operations, involving heating and cooling of a metal or alloy in the solid state for the purpose of changing the properties of the metal. Heat treatment consists of three phases. (a) Heating of the metal. (b) Soaking...
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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...
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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...
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Heat Treatment of Tools

General purpose tools like chisel, hammer, file, punch, lathe tools etc. are manufactured by forging. These tools are normalized immediately after forging to restore their original structure and to relieve stresses and strains set up while forging. Hardening is carried out to induce hardness at...
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Iron-Carbon Equilibrium Diagram

Alloys of the Iron carbon system are of the most vital importance to the modern industry due to their extensive, versatile applications. The Iron carbon system provides the most prominent example of heat treatment and property alteration based on the transformation from one form to...
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Methods of Case Hardening

Various types of surface hardening or case hardening processes are. (a)       Carburising (b)       Cyaniding (c)        Nitriding Carburising The formation of a high carbon case is carried out by heating the steel in contact with a carbonaceous material. Carbon diffuses on to the surface layers of...
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