Arrangement of heat treatment process for the shell of the reducer

Gearboxes are relatively delicate machinery in our daily and factory applications, and the arrangement of the heat treatment process for their housing in the process route mainly depends on the purpose of the heat treatment. So, let me briefly introduce the arrangement information of the heat treatment process for the housing in gearboxes:
1. The main purpose of annealing and normalizing the heat treatment of the casing in the gearbox before rough machining is to improve the cutting performance of the material and eliminate internal stress.
2. Quenching and tempering are generally arranged after rough machining and before semi precision machining. Quenching and tempering can achieve better comprehensive mechanical properties of the reducer parts, and can also refine and compact the metal structure as a preparatory treatment for subsequent quenching and nitriding to reduce deformation.

3. Generally, castings are arranged after rough machining, and high-precision and complex castings should be arranged once before and after semi precision machining. For reducer fine parts with poor rigidity, aging treatment should be arranged multiple times during rough machining, semi precision machining, and precision machining - the purpose of aging treatment is to eliminate internal stress generated in rough billet manufacturing and mechanical processing, and stabilize part accuracy.
4. Quenching can be divided into integral quenching, surface quenching, and carburizing quenching. Generally, quenching is arranged between precision machining and semi precision machining, and the surface of the reducer is often quenched and tempered and normalized before quenching - the purpose of quenching is to obtain high hardness and wear resistance of the parts.
5. Desalination is generally arranged before fine grinding and also requires quenching and tempering treatment - desalination can improve the hardness, wear resistance, fatigue strength, and corrosion resistance of gearbox parts.
I hope the information on the arrangement of the heat treatment process for the casing in the above reducer can provide some help for the heat treatment of product casings in the future!