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１．用电加工的方法可以十分经济而且快速地做出合乎二级和一级精度的齿轮；但刀具工作的寿命还很短。 ２．电加工过程中，刀具与工件的相对磨损值（Ｖｋ／Ｖａ）随电用量（电流与电压的乘积）的增长几乎成比例地增长；在适当的刀具与工件的相对速度之下，可以使Ｖｋ／Ｖａ 之值最小。 ３．耐高温并具有高硬度的非金属材料与金属粉末压烧结后的混合物质，用来做刀具材料，是有效的降低Ｖｋ／Ｖａ值的可能途径；改变两极间介质的成份也是有效的降低Ｖｋ／Ｖａ值的可能途径。
1. Electric machining can be very economical and fast to make the second-level and first-class precision gear; but the life of the tool is still very short. 2. During electrical processing, the relative wear value (Vk / Va) of the tool to the workpiece increases almost proportionally with the increase of the electrical quantity (current and voltage product); at the appropriate relative speed of the tool and the workpiece, Vk The value of Va is the smallest. 3. High temperature and high hardness of non-metallic materials and metal powder pressure sintering after the mixed material, used as a tool material, is an effective way to reduce the Vk / Va value; change the composition between the two media is also effective to reduce the Vk / Va value of the possible ways.