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俄罗斯马格尼特哥尔斯克钢铁公司与地方科研院所合作,开发出在2 000 mm轧机上减少管线钢带钢表层缺陷的有效轧制方法。提出将粗轧机组最初3个机架中的压下量降低3%～5%。结果表明,采用该方法可形成较好的轧制条件,降低了缺陷的产生概率。另外,还对轧制厚规格带钢时的裂纹产生概率进行了研究,建议轧制厚度超过16 mm的带钢时分5个道次完成精轧。
In cooperation with local research institutes, the Magnitogorsk Steel Company of Russia has developed an effective rolling method for reducing surface defects in pipeline strip on a 2 000 mm mill. It is proposed to reduce the reduction in the first three stands of the roughing mill by 3% to 5%. The results show that this method can form a better rolling conditions, reducing the probability of defects. In addition, the possibility of crack initiation during thick gauge strip rolling was also studied. It is recommended that strip rolling with a thickness of more than 16 mm should be finished in 5 passes.