石家庄钢铁厂小型轧钢车间生产直径12～28毫米的圆钢和螺纹钢筋。精轧机列机架间距为1.8米,轧辊转速每分钟493转,采用活套轧制。当轧制25、28毫米圓钢时,成品前活套跳花处,易影响成品的水平尺寸,常出现椭园度超差,废品率较高。25、28毫米园钢是畅销产品,为了满足用户的需求,提高上述产 Shijiazhuang Iron and Steel Plant small steel rolling workshop production of 12 to 28 mm in diameter bar and thread steel. Finishing mill rack spacing of 1.8 meters, the roll speed of 493 revolutions per minute, using looper rolling. When rolling 25,28 millimeters round bar, the living flower lace before the product, easy to affect the level of the finished product size, often appear oval degree tolerance, the rejection rate is higher. 25,28 mm Park Steel is the best-selling products, in order to meet the needs of users, improve the above production