Define Annealing,Quenching ,Tempering,Nitriding & Case-hardening
It is the process of heating steel to redness followed by slow cooling.
Quenching or Hardening:
It is the process of heating steel to redness followed by sudden cooling and plunging the red hot steel into water or oil.
It is the process of heating the hardened or quenched steel to a temperature much below redness (350 °C) followed by slow cooling.
It is a process of giving a thin coating of hardened steel to wrought iron or to a strong, flexible, and mild steel by heating it in contact with charcoal followed by quenching in oil.
It is a process of heating steel at 700 °C in an atmosphere of ammonia. This process impart a hard coating of iron nitride on the surface of steel.
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