The electromagnetic control roll (ECR) and electromagnetic stick (ES) are the core elements and the main driving parts of roll profile electromagnetic control technology (RPECT). To prolong the service life, it is necessary to treat ECR and ES surfaces. According to the heterogeneous characteristics of surface treatments, the roll profile electromagnetic control characteristics were analyzed for different parameters. An electromagnetic-thermal-force coupled axisymmetric finite element model was built to explore the differences in performance as a result of several treatment strategies, and the model was verified by experimental results measured with a roll profile electromagnetic control experimental platform. This model was used to analyze the influence of the heterogeneity of ECR inner hole and ES on the roll crown, the roll profile, the average contact pressure, and the stress state during RPECT process. The results indicate that the heterogeneous layer at ECR inner hole has a restrictive effect on RPECT and that the heterogeneous layer of ES can enhance the profile control ability of RPECT. A reasonable configuration scheme between the heterogeneity of ECR inner hole and the ES can increase the life of ECR and maintain the control ability of RPECT.

电磁控制辊（ECR）和电磁棒（ES）是辊型电磁控制技术（RPECT）的核心元件和主要驱动部件。为了延长使用寿命，需要对 ECR 和 ES 表面进行处理。根据表面处理的异质特性，对不同参数的辊型电磁控制特性进行了分析。建立了电磁-热力耦合轴对称有限元模型，探讨了几种处理策略导致的性能差异，并通过滚动轮廓电磁控制实验平台测量的实验结果验证了该模型。该模型用于分析ECR内孔和ES的异质性对辊冠、辊形、RPECT 过程中的平均接触压力和应力状态。结果表明，ECR内孔异质层对RPECT具有限制作用，ES异质层可以增强RPECT的调剖能力。ECR内孔异质性与ES之间的合理配置方案，可以增加ECR的寿命，保持RPECT的控制能力。