Heat Treatment

Heating and cooling a solid metal or alloy in such a way as to obtain desired conditions or properties. Heating for the sole purpose of hot working is excluded from the meaning of this definition.

Colour Method
A technique of heat treating metal by observing the colour changes that occur to determine the proper operation to perform to achieve the desired results.

See also: Ageing, Annealing, Black Annealing, Blacksmithing, Box Annealing, Case Hardening, Colour Temperature, Firing, Flame Annealing, Hardenability, Hardening, Heat Affected Zone, Heat Treating Cast Iron, Normalizing, Spinodal Structure, Temper, Thermal Stress.

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Subjects: Mechanical Engineering Physics