SECONDARY HARDNESS. The higher hardness developed by certain alloy steels when they are cooled from a tempering operation. This should always be followed by a second tempering operation.
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SPHEROIDIZING. Heating and cooling to produce a spheroidal or globular form of carbide in steel. Spheroidizing methods frequently used are: 1. Prolonged holding […]
SELECTIVE QUENCHING. Quenching only certain portions of an object.
THERMAL SHOCK. The development of a steep temperature gradient and accompanying high stresses within a structure.
SLOT FURNACE. A common batch furnace where stock is charged and removed through a slot or opening.