The customized duplxe roller chain wheel sprocket tells the relevant knowledge of Sprockets heat treatment distortion!
The change in the volume and shape of the workpiece during the quenching process is due to the volume expansion and contraction caused by the specific volume change during the structural transformation of the steel, and the plastic distortion caused by the heat treatment stress. Obviously, the specific volume change during the phase change in the heat-treated steel must exist.
The change in the volume and shape of the workpiece during the quenching process is due to the volume expansion and contraction caused by the change in the specific volume during the structural transformation of the steel, and the plastic distortion caused by the heat treatment stress. Obviously, the specific volume change during the phase change in the heat-treated steel must exist. Therefore, the greater the heat treatment stress, the more uneven the phase transition, and the greater the heat treatment distortion. When the heat treatment stress is timed, if the plastic deformation resistance of the steel is greater, the distortion will be smaller. Therefore, to reduce the distortion, it is necessary to reduce the quenching stress and improve the plastic resistance of the steel. To evaluate the distortion of Sprockets in the quenching process, the following aspects can be considered. Follow the editor of customized duplxe roller chain wheel sprocket to learn more about it!
1. The yield strength of steel. The yield strength of steel is used as an index of resistance to slight plastic deformation. Generally, the resistance of a metal material with a certain amount of residual plastic distortion due to a certain force is regarded as the yield strength of the material. Only when the internal stress reaches or exceeds the yield strength or plastic distortion resistance of the material, Sprockets can show heat treatment distortion. The main factors that determine the yield strength of steel are the chemical composition and structure of the steel, as well as the temperature and stress state of the steel. The higher the yield strength of Sprockets, the greater the resistance to plastic deformation and the smaller the amount of distortion.
2. Sprockets internal stress. The internal stress of the workpiece (mainly including machining stress and heat treatment stress) is another important factor that promotes the distortion of the workpiece. The greater the internal residual stress of the workpiece before quenching, the greater the distortion after quenching. When the internal stress reaches or exceeds the plastic deformation resistance or yield strength of the steel, the workpiece undergoes plastic distortion, that is, changes in the size and shape of the workpiece.
The above is the customized duplxe roller chain wheel sprocket editor introducing some knowledge about the distortion of Sprockets during heat treatment. I hope you can learn more.
ADD: Shimenqiao Industrial Zone, Renqiu City, Hebei Province, China
Alibaba: DongWang Sprocket