An abrasive grinding process undergoes a process of sliding (elastic deformation), plowing (plastic deformation) and cutting (forming chips, along the front of the abrasive grains), so that the surface of the workpiece to form thermal stress and deformation stress. The grinding, grinding and cutting of the abrasive grains on the cutting surface are related to the condition of the abrasive grains and the nature of the material being processed. The above three processes and the wheel speed, the higher the wheel speed, the smaller the elastic-plastic area. The elastoplastic zone is also associated with the actual amount of grinding per abrasive grain.