Can the TRD process be applied to oil and water hardened tool steel?
The TRD furnace operates at the same temperature as hardening temperature of steel. The hardening process takes place when it is quenched in the air, in the salt, or in a high temperature oil furnace in order to reduce possible material distortion. However those quenching methods are not sufficient when hardening oil/water quenching steel. They need to be re-hardened by a non-oxygen atmosphere furnace or a carburized atmosphere furnace. Most machine components use this procedure.
