The temperature at which one phase of a solid
solution is transformed to another form is
called critical temperature. Different phases in
the above diagram have different properties.
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Metalworking Processes and Temperature Concepts, Slides of Mechanical Engineering
An overview of various metalworking processes, including normalizing, annealing, quenching, tempering, carburizing, flame hardening, cyaniding, high frequency induction hardening, hot working of steel, hand forging, and forge components. It also discusses the concepts of critical temperature and the functions of furnace components.
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2011/2012
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The temperature at which one phase of a solid solution is transformed to another form iscalled critical temperature. Different phases inthe above diagram have different properties.
Normalizing: to refine the structure after it hasbeen distorted by hammering or working whenin the cold state.
Annealing: to soften the metal
Quenching: to harden a metal
Tempering: to remove brittleness caused byhardening,
Hot Working of Steel: changing shape attemperature above critical point
Hand Forging and Forging Equipment:shaping carried out under hand cotrol
Forge: furnace
Hearth: to burn coke
Tuyere: pipes to force air into fire
Blower: for supplying air under pressure totuere
Chimney: to carry away smoke and gases
Bosh or Water Tank: to hold water forquenching