TEMPERING. Reheating quenched steel to a temperature below the critical range, followed by any desired rate of cooling. Tempering is done to relieve quenching stresses, or to develop desired strength characteristics.
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SPALLING. A chipping or flaking of a surface due to any kind of improper heat treatment or material dissociation.
SEVERITY OF QUENCH. Ability of quenching medium to extract heat from a hot steel workpiece; expressed in terms of the H value.
AGE HARDENING. Hardening by aging, usually after rapid cooling or cold working.
WATER QUENCHING. A quench in which water is the quenching medium. The major disadvantage of water quenching is its poor efficiency at the […]