近年来,我国进口了一批高速线材轧机,同时也在努力开发国产45°无扭高速线材精轧线。 1.无扭精轧机的进步我国研制的第一台45°10机架精轧线样机已于1980年成功地轧出了3500t线材,1981年3月通过了对设备和产品的质量鉴定。接着又开发了两种不同传动型式的精轧机,一种是内齿型,由8机架组成,来料为Φ12.7mm,轧制速度为36m/s,生产Φ5.5 In recent years, China imported a number of high-speed wire rod mill, but also efforts to develop domestic 45 ° twisted high-speed wire finishing line. 1. No twisting and finishing mill progress China’s first 45 ° 10 mill finishing line prototype has been successfully rolled out in 3500 tons of wire, in March 1981 passed the quality appraisal of equipment and products. Then developed two different types of finishing mill, one is the internal gear type, composed of 8 racks, incoming Φ12.7mm, the rolling speed of 36m / s, the production of Φ5.5