在负偏差轧制中,负移量的大小决定着负偏差轧制效益的大小。所谓负移量,即公称尺寸与负偏差轧制时的目标尺寸之差。负移量越大,负偏差轧制的增材率越高。同时,轧制出的钢材也越容易超出标准偏差而不能按合同交货,造成质量事故。因此,解决如何给定负移量,负移量与增材率的定量关系如何,以及如何判定是否具备负偏差轧制的 Negative deviation in the rolling, the size of the negative shift determines the size of negative deviation rolling benefits. The so-called negative shift, that is, nominal size and negative deviation of the target size difference between the rolling. Negative shift the greater the negative deviation of the increase of the higher the rate of rolling. At the same time, the easier it is for the rolled steel to exceed the standard deviation and not be delivered on contract, resulting in a quality accident. Therefore, how to determine how the given negative shift, negative shift and increase the quantitative relationship between the rate and how to determine whether the negative deviation of the rolling