与四辊轧机的板形预报问题相比，六辊轧机的未知量更多，计算速度更慢。为此，将模型耦合法拓展到六辊轧机，建立相关的带材塑性变形模型与辊系弹性变形模型的线性方程组。考虑到板形问题的输入参数中通常并不包含空载辊缝值，根据带材出口平均厚度已知的条件提出一个新的线性方程，将空载辊缝值纳入到未知量中，提高了模型耦合法的适用性。两个计算实例表明，六辊轧机板形快速预报的模型耦合法的计算结果与松弛因子法吻合良好，但可使计算速度提高100倍左右。
Compared with the shape prediction of the four-high mill,there are more unknowns obout the six-high mill, and the calculation speed is slower. Therefore,the model coupling method is extended to the six-high mill,and the linear equations of the strip plastic deformation models and the elastic deformation model of roll system are established. Con-sidering the input parameters of flatness problems usually does not include the no-load roll gap value,a new linear equa-tion is proposed according to the average thickness of the strip at exit. The value of the no-load roll gap is incorporated into the unknown quantity. Therefore,the applicability of the model coupling method is improved. Two calculation exam-ples show that,when applied to six-high mill,the calculation results of model coupling method are in well agreement with the calculation results of relaxation factor method,but it can increase the calculation speed by about 100 times.
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