To study Extrusion angles.

In this video you can comparatively see the extrusion process of Aluminium pipe and solid pipe. In upper and lower left half of the video pipe extrusion process is shown Which comprises of a mandrel in the extrusion die. On the upper half Ram velocity is set as 1mm per sec. Die angle is specified as 60o and it is specified that there is no friction during this cold extrusion process And on lower left half Ram velocity is set as 1mm per sec. Die angle is specified as 90o and it is specified that there is no friction during this cold extrusion process. Lower right half is showing solid Extrusion process where Ram velocity is set as 1mm per sec. Die angle is specified as 45o and it is specified that there is high friction during this HOT extrusion process. Extrusion forces with respect to pilot height are shown over the graph these Forces are maximum when there is sudden change in area of cross section of the billet. As the pilot height reduces the force required to extrusion of pipe is increases. Left side coloured strip shows temperature variation in the billet. The red region shows the maximum temperature generated at varying cross section. One fourth of the solid shaft is shown over the screen because this solid shaft is axis symmetric with X and Y direction.