Furnaces Used for Tempering of Steel | Heat Treatment | Metallurgy
As tempering is the process of reheating a hardened steel up to a temperature, maximum A1, it is a low temperature process. It can be performed in a: (a) Oil-bath furnace (b) Salt bath furnace (c) Lead bath (d) Forced-air circulation furnace. 1. Oil-Bath Furnace: Oils can be used as a medium for quick transfer of heat for tempering, or [...]