1.改进前的轧机情况我厂φ250×5横列式热轧机是三十年代产品,机架为铸铁开口式,而且中辊不固定,不能实现对称调节。调整某一个轧辊均引起轧制线的变化,而轧辊的梅花头处经常扭坏,仅1985年一年损坏轧辊达30余只。老轧机中心线为850毫米,轧机与轨垫是平面接触,因此,轧机轧制时易造成窜动,不稳 1. Improve the situation before the mill I φ250 × 5 horizontal mill hot-rolled products are the 1930s, the framework of cast iron openings, and the roller is not fixed, can not achieve symmetrical adjustment. Adjustment of a roll all led to changes in the rolling line, while the head of the roll often twisted spoil, only a year in 1985 damaged more than 30 rolls. The center line of the old mill is 850 mm, the rolling mill and the track pad are in plane contact, therefore, the rolling mill is easy to cause the movement and instability