Abstract The effect of stress release on the shape and deformation of strip between stands are rarely considered or quantified in the traditional strip shape model. In order to make up this deficiency, a high precision shape model is established by the mechanism of the strip shape forming and the deformation of roll system in this paper. Special concentration is placed on the effect of roll wear, roll thermal expansion, metal transverse flow and stress release on the shape. In addition, a tolerance factor which is used to describe the attenuation and tolerance abilities of each stand for longitudinal strain difference is proposed as a foundation for a presetting strategy. Compared to the traditional presetting strategies using the empirical coefficient or Shohet theory, the presetting strategy on the basis of the tolerance factor can better play the control ability of each stand. A systematical description of the presetting strategy and the modeling process of the high precision shape model is given in the present study. The calculated results agree well with experiments, and the actual production data show that the shape model has satisfactory accuracy.

中文翻译：

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带钢热轧高精度形状模型及预调策略

摘要 传统的带钢形状模型很少考虑或量化应力释放对机架间带钢形状和变形的影响。为了弥补这一不足，本文通过带钢成形机理和辊系变形机理建立了高精度的形状模型。特别关注轧辊磨损、轧辊热膨胀、金属横向流动和应力释放对形状的影响。此外，提出了一个用于描述每个支架对纵向应变差异的衰减和耐受能力的公差因子，作为预设策略的基础。与使用经验系数或 Shohet 理论的传统预设策略相比，基于容差系数的预置策略可以更好地发挥各机架的控制能力。本研究对高精度形状模型的预设策略和建模过程进行了系统描述。计算结果与实验吻合较好，实际生产数据表明该形状模型具有满意的精度。