电解磁力复合加工对磁性磨粒性能的影响

利用单纯的磁力研磨工艺加工镍基高温合金等材料时，磁性磨粒失效严重，严重影响了磁力研磨工艺的研磨效果。为了解决这一技术难题，将电化学与单纯的磁力研磨加工工艺结合，通过电解加工在工件表面形成质地较软的钝化膜，再利用磁力研磨对其表面进行加工。对复合加工后的磁性磨粒进行电镜成分分析，得知铝的相对质量分数仅从27.60%降至23.48%，有效地降低了磁性磨粒中研磨相成分的损失，延缓了磁性磨粒的失效时间，提高了磁性磨粒的利用率和使用寿命，从而保证了工件的加工质量。 

Effect of electrolytic magnetic composite machining on properties of magnetic abrasive particles

When the nickel base superalloy and other materials are machined by simple magnetic grinding process, the failure of magnetic abrasive particles seriously affect the grinding effect of the magnetic grinding process. In order to solve this technical problem, electrochemistry is combined with the abrasive finishing technology.Eelctrolytic processing is used to form a softer passivation film on the workpiece, and then the surface is machined by magnetic abrasive finishing.The compositions of the magnetic abrasive particles after the composite processing are analyzed by electron microscopy, the relative mass fraction of aluminum decreases from 27.60% to 23.48%. It effectively reduced the loss of abrasive phase components in magnetic abrasive grains, delags the failure time and improves the utilization and service life of magnetic abrasive grains, thus ensures the machining quality of workpieces.