近年来,中国进口了一批线材轧机,与此同时,中国致力于开发国产先进新工艺技术的45°无扭高速线材精轧线。第一台10机架精轧机样机在1980年中成功地轧出了3500多吨线材。此后,开发了两种不同传动型式的精轧机,一种是内齿轮传动型,另一种是非内齿轮传动型。在生产Φ5.5mm线材时:8机架终轧速度为36m/s时,使用来料尺寸为Φ127mm;10机架终轧速度为50m/s、60m/s时,使用来料尺寸为Φ17mm; In recent years, China has imported a number of wire rod rolling mills. At the same time, China is devoted to the development of a 45 ° twistless high speed wire finishing mill with advanced domestic and new technology. The first prototype of a 10-stand finishing mill rolled out more than 3,500 tons of wire in mid-1980. Since then, two different types of finishing mills have been developed, one of which is an internally geared type and the other a non-internally geared type. In the production of Φ5.5mm wire: 8 rack finishing speed of 36m / s, the use of incoming size Φ127mm; 10 rack finishing speed of 50m / s, 60m / s, the use of incoming size Φ17mm;