表面技术2025，Vol.54Issue(12)：164-174,11.DOI:10.16490/j.cnki.issn.1001-3660.2025.12.015
基于磁粒研磨法的电磁铁温升研究
Temperature Rise of Electromagnet Based on Magnetic Abrasive Finishing Method
摘要
Abstract
The work aims to explore the temperature change when the electromagnet is working,and design a reasonable cooling device.With the effective machining time and the inner surface roughness of the pipe fitting as the evaluation criteria,the effective machining time of the electromagnet was extended to improve the processing efficiency by optimizing the current parameters and heat dissipation conditions of the electromagnet.Multi-physical field coupling simulation was carried out for the electromagnet.Maxwell software was used for electromagnetic loss analysis,and the electromagnetic loss was coupled to Fluent for temperature field simulation.According to the simulation results,a reasonable heat dissipation device was designed and the current was optimized.Finally,the best current parameters were determined by the finishing test of titanium alloy tube surface.The air-cooled heat dissipation of electromagnets was compared under 3 A,3 Hz sinusoidal currents from different angles.The highest temperature of the electromagnet after air cooling at station 1 was 59.5 ℃.The highest temperature of the electromagnet after air cooling at station 2 was 51.3 ℃.At station 2,the peak current increased to 3.5 A and 4 A respectively,and the simulation temperature after air cooling was 66.9 ℃ and 88.9 ℃ respectively.The temperature rise and current loss of the electromagnet under different working conditions were monitored.Under the current of 3 A and 3 Hz,without heat dissipation measures,the electromagnet reached the limit operating temperature after 15 min,and the current loss was 0.49 A.Under the heat dissipation condition,when the titanium alloy pipe was finished with 3 A,3 Hz current,the electromagnet temperature was finally stable at 58.6 ℃,and the current loss was 0.34 A.After finishing for 40 min,the inner surface roughness of the pipe fitting decreased from the original Ra 0.601 μm to Ra 0.172 μm.When the titanium alloy pipe was finished with 3.5 A,3 Hz current,the electromagnet temperature finally stabilized at 75.7 ℃,and the current loss was 0.23 A.After finishing for 20 min,the inner surface roughness of the pipe fittings decreased from the original Ra 0.618 μm to Ra 0.223 μm.When the titanium alloy pipe was finished with 3 A,3 Hz current,the electromagnet temperature was finally stable at 58.6 ℃.After finishing for 40 min,the inner surface roughness of the pipe fitting decreased from the original Ra 0.601 μm to Ra 0.172 μm.From the two groups of comparative tests,it can be concluded that the difference between the simulated temperature and the actual temperature is relatively close,which verifies the accuracy of the simulation.The cooling fan is arranged on the side(station 2),the electromagnet cooling effect is better and the device is more safe and reliable when running.The ideal machining current of 3 A,3 Hz is determined by simulation and finishing test.When 3 A,3Hz current is adopted for finishing,under the action of air cooling,the electromagnet does not need to stop cooling while improving the processing efficiency.关键词
电磁铁/磁粒研磨/电磁损耗/电磁-热-流耦合/表面质量/表面粗糙度Key words
electromagnet/magnetic abrasive finishing/electromagnetic loss/electromagnetic-thermo-fluid coupling/surface quality/surface roughness分类
金属材料引用本文复制引用
孙岩,潘明诗,刘冰洋,李厚乐,韩冰,陈燕..基于磁粒研磨法的电磁铁温升研究[J].表面技术,2025,54(12):164-174,11.基金项目
辽宁省教育厅科学研究经费项目(LJ212410146074)Scientific Research Funding Project of the Education Department of Liaoning Province(LJ212410146074) （LJ212410146074）
