The Friction Acoustic Emission Signal Characteristics During the Plastic Forming Process of Metal

In the plastic forming process of metal, at the great pressure, the friction was produced between the deformation metal and the mold, which could made energy waste, and also so the non-uniform deformation of the metal blank. Using acoustic emission testing technique, the plastic deformation acoustic emission signals of friction were detected during the simulated metal slider and skateboards on three uniform speed and three contact pressure. Testing results showed that under certain conditions, as the pressure was increased, the counts and amplitude of acoustic emission signals would reduce.