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为了提高热连轧带钢成材率和宽度精度，国外一些钢厂开发了精轧宽度自动控制系统，在精轧机架间设置了测宽仪，利用机架间张力动态调整带钢宽度。实际应用表明，带钢宽度偏差有明显减少。
In order to improve the yield rate and width accuracy of hot strip, some foreign steel mills have developed a system of automatic control of finish rolling width. A width gauge is set up between the finishing stands to dynamically adjust the strip width by the tension between the stands. Practical application shows that strip width deviation is significantly reduced.