基于电化学过程的电解加工间隙电场的研究

A STUDY ON THE GAP ELECTRICAL FIELD IN ECM BASED ON ELECTRODE PROCESSES

分析了电解加工电极界面双电层的特殊性。结合阴极设计的思路 ,讨论了电极表面去极化对电极过程的影响以及改变流场、改变电极表面电流分布对提高电解加工精度的作用。最后提出采用磁场改变电解加工间隙电场的分布 ,从而使加工精度得到提高的方法。因为在微观上磁场对电解液分子结构的作用和对作为带电粒子的离子运动方向的影响 ,构成了对电极过程和间隙电场的影响 ,宏观上表现为减少电解加工杂散腐蚀 ,减轻流纹。

Special features of the binary electrical layers of the electrode interface in ECM were analyzed. Aiming at the cathode design, influence of the depolarization of electrode surfaces on the electrode process and improvement in the precision of ECM through changes in the fluid field and in the distribution of electrical current on the electrode surfaces were discussed. A method was proposed to improve the machining precision of ECM through changes in the gap electrical field distribution by the magnetic field. Microscopically, the magnetic field affects the molecular structure of the electrolyte and the direction of movement of the charged ions. The effect affects the electrode process and the gap electrical field, which in turn reduces the dispersive corrosion and fluid wrinkles in ECM.