Heat treatment of CNC Machined Components process can be divided into two kinds: preparation heat treatment and final heat treatment. 

Preparatory heat treatment is to improve mechanical properties and eliminate internal stress, so as to prepare for final heat treatment. Generally including annealing, normalizing, quenching and tempering and aging treatment. The preparation heat treatment is usually after rough processing. 

Final heat treatment: is to improve the hardness and wear resistance of parts, including quenching, carburizing, nitriding and so on. Usually carried out after semi-finishing and before finishing. JST supply the best China CNC Machining service for many years, welcome to contact us freely for more requirements