Oil Quenching Hardening

OIL Quenching hardening is the process of heat treatment that process
the whole workpice by oil cooling process of quenching.
Then, use the salt bath to do quenching in order to maintain carbon and oxidation.
Also, it help reduce  thermal shock which is the main factor of twisted and bend.
Then, use the salt bath to do quenching in order to maintain carbon and oxidation.
This process is much beter when compare to other furnace process of quenching.