介绍了一种新的奥氏体不锈钢无缝管材制备工艺 ,即对空心铸坯直接热挤压制备荒管。在对铸管坯的热压缩试验研究的基础上制定了正确的热挤压工艺。同时对热挤压后的荒管的组织与性能进行了研究 ,结果表明新工艺可获得组织和性能均与传统工艺水平相当的不锈钢荒管 ,但工艺流程缩短 ,生产成本降低 A new austenitic stainless steel seamless pipe preparation process is introduced, that is, the direct slab is prepared by hot extrusion of the hollow slab. Based on the hot compression test of cast billet, the correct hot extrusion process was developed. At the same time, the microstructure and properties of waste pipe after hot extrusion were studied. The results show that the new process can obtain the stainless steel waste pipe with the same structure and performance as the traditional process, but the process flow is shortened and the production cost is reduced