When selecting the heat treatment scheme, the advanced heat treatment process shall be selected as far as possible according to the workpiece material and the heat treatment capacity already possessed. The selection of general heat treatment scheme shall follow the following principles:
① Requires comprehensive performance workpieces. For this kind of workpiece, it is usually treated by tempering.
② Elastic structural members are required. If a large amount of elastic deformation is not required, such as all kinds of springs, spring steel can be selected, and stress relief annealing or quenching and medium temperature annealing heat treatment can be used according to the selected materials. If a large amount of elastic deformation is required, such as sensitive elements, copper base alloy can be selected, and stress relief annealing or quenching + aging can be used.
③ Wear resistant parts are required. When low carbon steel and alloy steel are selected, carburizing or cyaniding treatment is used; when medium carbon steel and alloy steel are selected, high frequency quenching and nitriding heat treatment is generally used.
④ Parts requiring special physical and chemical properties. Stainless steel and heat-resistant steel shall be selected according to the working environment and the performance requirements of the workpiece, and then the corresponding treatment shall be carried out according to the technical requirements.
On 2018-08-08 11:45:46
