不锈钢冷连轧板带的表面粗糙度建模

针对不锈钢冷连轧生产工艺的特点，在引入转印率和遗传因子概念的基础上，通过深入的理论分析，推导出带钢表面粗糙度理论模型.首先通过SUS430不锈钢冷轧润滑实验进行表面粗糙度研究，定量分析压下率、来料厚度、带钢变形抗力和乳化液工艺参数等对转印率和遗传因子的影响，给出了轧辊粗糙度衰减函数方程，并对末机架入口带钢表面粗糙度进行近似求解，最终建立了不锈钢冷连轧成品板面粗糙度数学模型，并将其应用到冷连轧生产实践中.统计结果表明，粗糙度模型计算值与实测值的相对误差小于634%，该模型具有较高的精度和较好的泛化能力.

Modeling for Surface Roughness of Stainless Steel Strip in Tandem Cold Rolling

According to the characteristics of stainless steel in tandem cold rolling and based on transfer rate and genetic factor， a set of models about surface roughness of stainless steel strips were derived theoretically. First， the surface roughness of the SUS430 stainless steel strip was studied through lubrication experiments in the cold rolling process. The effects of main factors， such as reduction ratio， initial thickness， deformation resistance， and emulsion technological parameters， etc.， on the transfer rate and genetic factor were analyzed quantitatively， with attenuation function equations developed for describing surface roughness. The surface roughness of strips at the entry of last mill was calculated approximately. Ultimately， a mathematical model of stainless steel strip surface roughness was built which was applied to the practical production. A great number of statistical results show that the relative deviation between the roughness values calculated from the model proposed and the experimental data was less than 634%， which means that the model has relative high accuracy and good generalization ability.