通过对三种磨削液的磨削性能、极化曲线的测试以及试件表层金相组织的分析，探讨了磨削过程的润滑和电化学作用．试验表明，磨削液中润滑剂应为适量；水基合成液的电化学作用可消除微观火花放电． Through the grinding performance of the three kinds of grinding fluid, the polarization curve of the test and the microstructure of the specimen surface analysis of the grinding process of lubrication and electrochemical interaction. Tests show that the amount of lubricant in the grinding fluid should be appropriate; the electrochemical action of water-based synthetic fluid can eliminate the micro-spark discharge.