精密轧机的辊型电磁调控工艺参数  

Roll profile electromagnetic control process parameters in precision rolling mill

作　　者：杜凤山 刘文文 冯岩峰 孙静娜 

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,秦皇岛066004

出　　处：《工程科学学报》2017年第12期1874-1880,共7页Chinese Journal of Engineering

基　　金：国家自然科学基金重点资助项目(U1560206);国家自然科学基金资助项目(51374184)

摘　　要：为了实现微尺度辊缝形状调节,提出了辊型电磁调控技术,并自行设计制造了Ф270 mm×300 mm辊型电磁调控实验平台.通过电磁-热-力耦合数理建模,并对比分析相同工况实验和仿真结果,发现两者结果十分接近,模型可靠.在此基础上,分析了不同等效电流密度和频率下轧辊凸度及轧辊凸度增长速率随加热时间的变化规律,给出了等效电流密度、频率、加热时间对辊型曲线的影响,并从避免电磁棒局部温度过高及便于轧辊凸度调节出发,给出了合理的工艺参数.To achieve micro-scale roll gap shape adjustment,roll profile electromagnetic control technology was proposed and a Ф270 mm × 300 mm roll profile electromagnetic control experimental platform was designed and built. Meanwhile,a mathematical model based on electromagnetic,thermal and mechanical coupled parameters was established. The results of both the experiment and simulation were compared and analyzed under the same process conditions. The comparison shows that the experimental and simulated results are in the agreement,thus verifying the model. Based on the simulated results,the roll crown and the roll crown growth rate changing with heating time were calculated under different equivalent current densities and frequencies. The influence of current density,frequency and heating time on the roll profile curve was presented. In addition,reasonable technological parameters were used in order to avoid local overheating of the electromagnetic stick and further facilitate adjustment of the roll crown.

关 键 词：精密轧机 电磁调控轧辊 电磁棒 辊凸度 辊型曲线 

分 类 号：TG335.1[金属学及工艺—金属压力加工] O441.3[理学—电磁学]