The reducer is a relatively precise machine.The casing is the casing of the reducer.The arrangement of its heat treatment process on the process line mainly depends on the purpose of heat treatment.Heat treatment process layout information for the reducer shell:
1. The heat treatment annealing and normalizing of the reducer shell are usually arranged before rough machining.Their main purpose is to improve the machinability of the material and to eliminate internal stress.
2. Quenching.Divided into overall quenching, surface quenching and carburizing quenching.Generally arranged between finishing and semi-finishing.Quenching, tempering and normalizing are often carried out before surface quenching.The purpose of quenching is to make parts obtain higher hardness and wear resistance.
3. Aging treatment.General castings are usually arranged after rough machining.High-precision complex castings should be arranged once before and after semi-finishing.Precision parts with poor rigidity should be subjected to multiple aging treatments during rough machining, semi-finishing and finishing.The purpose of aging treatment is to eliminate the internal stress generated in blank manufacturing and machining, and stabilize the precision of parts.
4. Fading.Arrange before fine grinding.Quenching and tempering treatment should be carried out before desalination to improve the hardness, wear resistance, fatigue strength and corrosion resistance of parts.
5. Quenching and tempering is generally arranged after rough machining and before semi-finishing.The comprehensive mechanical properties of the parts obtained through quenching and tempering are better, and the metal structure can be refined and compacted, making preparations for reducing deformation through quenching and nitriding in the future
