Investigation of metal extrusion forming through steadily rotating container

Abstract

To deal with the problems of high energy consumption and low material utilization in low plastic alloy extrusion, a new forming technology – container rotation extrusion – is proposed, and the die structure is also designed. Compared with the die rotation extrusion, which is only suitable for circular section parts, container rotation extrusion can solve the problem of axial ‘cut off’ caused by odd-shaped section product extrusion. The study results show that, in comparison to conventional extrusion, plastic zone expands obviously during forming process and the forming load decreases by 42.1%. What is more, during container rotation extrusion, ‘dead zone’ is disappeared. Consequently, this technology can form both complex cross-section and low plastic material products to achieve ‘small equipment does large workpiece’.