Compression spinning of circular magnesium tube using heated roller tool

摘要

The tube has high bending and torsional rigidity considering its weight. Thus, tubular products are effective industrial parts to reduce their weight and their employments volume is increasing. Spinning is a very effective and flexible manufacturing technology for short production runs in a variety of sizes and shapes. Spinning is widely applied to the tube forming corresponding to the increasing usage of the tubular parts. Magnesium and its alloys have many good properties as strength to weight ratio, vibration absorbability and excellent recyclability. It is very difficult to form the magnesium alloy to various shaped products. But, it is easy to form the alloys at high temperature. Therefore, authors have invented new Computer Numerical Control (CNC) spinning machine, which has roller tools with heaters. The heated tools heat and form the magnesium tubes into various shapes by the spinning. The forming possibility of magnesium tube and the properties of formed tube are made clear in this paper.