一、引言温挤压是一种高效率毛坯精化的新成形技术。它兼备冷、热挤压的优点,特别是能节省能源和材料。以轴承套圈为例,温挤与传统的热锻相比,材料利用率可提高15～18%。与管棒车削工艺相比,则可节省更多的材料。例如,襄阳轴承厂生产的804705万向节轴承滚针 First, the introduction of warm extrusion is a high efficiency of the new preform refining technology. It combines the advantages of cold and hot extrusion, especially to save energy and materials. Take the bearing ring as an example, the temperature extrusion can increase the material utilization by 15% ~ 18% compared with the traditional hot forging. Compared with the tube bar turning process, you can save more material. For example, the 804,705 universal joint bearing needle roller bearings manufactured by Xiangyang Bearing Factory