一、引言由于电解加工具有能加工复杂形状和难加工材料的特点。目前已广泛的应用于加工各种复杂型面、型腔模具、异形孔、薄壁件等等。当前,加工精度不够高已经成为电解加工扩大应用的主要障碍,成为迫切需要解决的一个问题。为了提高加工精度,这些年来研究出不少方法,其中主要有;钝化性电解液、混气加工、小间隙加工、脉冲电流加工、振动进给等等。作者近年来经过一系列的试验研究,认为低浓 First, the introduction of electrolytic machining with complex shapes and difficult to process the characteristics of materials. Has been widely used in processing a variety of complex profiles, cavity mold, shaped holes, thin-walled pieces and so on. At present, the processing accuracy is not high enough has become the major obstacle to the expansion of the application of electrolytic processing, has become an urgent need to solve a problem. In order to improve the machining accuracy, many methods have been developed over the years, mainly including passivation electrolyte, air mixing, small gap machining, pulse current machining, vibration feeding and so on. In recent years, the author through a series of experimental studies, that low concentration