A photo-plastic experimental study on deformation of rotary forging a ring workpiece

The basic principle of rotary forging, the basic theory of photo-plastic experimental methods, and the mechanical and optical properties of photo-plastic material were introduced briefly. The heat treatment process of photo-plastic material was designed and made. The photo-plastic experiments of rotary forging a ring workpiece were acted by two schemes using polycarbonate samples at a 300 kN rotary forging press. Through taking photographs of equidifferent charts and drawing isocline charts of slices at the exit and entrance of the contact zone of samples, the strain distributions of crossing line of slices were calculated by the oblique passing method. The deformation characteristics of rotary forging a ring workpiece was given in detail.