极薄带最小可轧厚度理论及试验分析

Theoretical and experimental analysis of minimum thickness in ultra-thin strip rolling

许多学者在试验中发现,试验得到的最小可轧厚度远小于常用最小可轧厚度公式计算得到的结果。针对上述问题,进行了最小可轧厚度理论分析,推导出新的最小可轧厚度公式。新公式计算的最小可轧厚度约为Stone公式计算结果的22%。通过实验室二辊轧机进行304不锈钢、纯铝、纯铜极薄带轧制试验,实测得到不同材质的试验最小可轧厚度。将实测结果和新公式计算结果及Stone公式计算结果进行对比,发现新公式计算结果更接近于实测结果,从而验证了模型的准确性。

Most scholars have found that the minimum thickness obtained by the experiment is much smaller than that calculated by the common formula of the minimum thickness. In view of the above problem, the theory of the minimum thickness was analyzed, and then a new formula of the minimum thickness was deduced. The minimum thickness calcu- lated by the new model is about 22% of the Stone formula. Finally, the minimum thickness of 304 stainless steel, pure aluminum and pure copper was obtained by a two-high mill. By comparing the measured results with the calculated re- suits of the new model and the Stone formula, it is found that the calculations of the new model are closer to the mea- sured results, which verifies the accuracy of the new model.