脉冲磁场辅助磁粒研磨加工试验  

Experimental Research on Pulse Magnetic Field Assisted Magnetic Abrasive Finishing

作　　者：闫宇航 王荟江 丁云龙 王杰 马小刚[1] 韩冰[1] 巨东英 YAN Yuhang;WANG Huijiang;DING Yunlong;WANG Jie;MA Xiaogang;HAN Bing;JU Dongying(School of Mechanical Engineering&Automation,University of Science and Technology Liaoning,Anshan 114051,China;Yantai Port Co.Ltd.,Joint General Terminal Branch,Yantai 264000,China;Ningbo Haizhi Inst Mat Ind Innovat,Ningbo 315000,China)

机构地区：[1]辽宁科技大学机械工程与自动化学院,鞍山114051 [2]烟台港股份有限公司联合通用码头分公司,烟台264000 [3]宁波市海智材料产业创新研究院,宁波315000

出　　处：《中国表面工程》2025年第1期107-117,共11页China Surface Engineering

基　　金：辽宁省教育厅科学研究经费项目(LJ212410146074);辽宁省科技厅博士启动经费项目(2021-BS-241)。

摘　　要：针对SUS304不锈钢板表面的线状或者点状缺陷等质量问题,采用磁粒研磨法去除SUS304不锈钢板件的表面缺陷和原始加工纹理,通过设计脉冲磁场以及电路,探究脉冲磁场辅助平面磁粒研磨的影响因素,使加工区域的磁场复杂化,进而使加工轨迹多样化,提升加工效率和表面质量。提出一种脉冲磁场辅助平面磁粒研磨的装置,采用磁场模拟软件对电磁辅助永磁的磁场进行仿真,对不同分布状态的磁场进行分析;通过信号发生器产生并调节脉冲电流的频率和占空比,从而控制电磁铁。脉冲电磁铁产生脉冲磁场,促进磨粒的翻滚更新。通过设计电路有效解决电磁铁发热严重的问题;通过试验对比不同参数的研磨磁场对SUS304不锈钢板的研磨效果,研磨间隙为2mm时,对比不同电压幅值、不同电流频率、不同电流占空比对工件表面质量的影响。使用触针式表面粗糙度测量仪和超景深3D电子显微镜检测并对比试验前后工件的表面质量并对仿真结果进行验证。当加工参数为脉冲电流幅值20 V、脉冲电流频率为4.5 Hz、脉冲电流占空比为50%时,SUS304不锈钢板研磨后表面的加工纹路以及缺陷得到有效去除,表面粗糙度值由原始的0.346μm降低至0.047μm。试验结果验证由脉冲磁场辅助的周期性变化的研磨磁场可以使磨粒进行周期性运动,复杂化研磨轨迹,促进磨粒在加工区域的翻滚更新,提高研磨效率与研磨效果。SUS304 stainless steel is a common stainless steel material with good corrosion resistance,heat resistance,and mechanical properties.But various defects may appear on its surface.Therefore,in response to the surface quality problems of SUS304 stainless steel plate,magnetic abrasive finishing method is used to remove the surface defects and original texture of SUS304 stainless steel plate.Traditional magnetic abrasive finishing has a relatively single magnetic field during processing,and the movement trajectory of the abrasive particles is relatively regular,so that the grinding marks are obvious.Moreover,because of overheating of the electromagnet,the working time can not be too long,which leads to lower working efficiency.Based on the traditional magnetic abrasive finishing,a pulse magnetic field has been added and a circuit has been designed.This not only complicates the magnetic field in the processing area and diversifies the processing trajectory,but also solves the serious heating problem of electromagnetic,and working efficiency of the device can be improved.Therefore,a pulsed magnetic field assisted planar magnetic abrasive finishing device was proposed,and the permanent magnet assisted with pulse magnetic field of electromagnetic was simulated using magnetic field simulation software.Firstly,the field domain was set as a transient field,and the materials in the device were set.Furthermore,an air domain was added.Finally,a calculation step was added to analyze the magnetic field under different distribution states.Based on the results of simulation,the influence of magnetic field on the motion of abrasive particles can be observed.In order to explore the influence factors of planar magnetic abrasive finishing assisted with pulse magnetic field,response surface methodology was used to optimize the data of three influencing factors:pulse current amplitude,pulse current frequency,and pulse current duty cycle.Through single factor experiments,the range of the three factors was obtained:pulse current amplitude

关 键 词：磁粒研磨 脉冲磁场 SUS304不锈钢 表面粗糙度 

分 类 号：TM15[电气工程—电工理论与新技术]