Quenching, tempering & annealing
Quenching, Tempering and Annealing: cooling in heat treatment processes
Quenching is when a part that has been heated to a given metal transformation temperature is cooled quickly. Compared to slow cooling, rapid cooling modifies the metal's structure and thereby its hardness characteristics (surface or core) and elasticity.
Tempering and annealing a part are heat treatments added to quenching that can relax some of the residual stresses from quenching and even produce a new metal transformation (total or partial recrystallization) to obtain the best compromise between metal characteristics.
Compared to other heating methods, using induction heating for quenching, tempering or annealing a part provides the following advantages:
- Accurate adjustment for the speed of temperature increase
- Heat zone precision
- Repeatable stable cycle
Fives metal heat treatment systems are designed to be integrated into automated units for maximum productivity.