CAJ | 학술논문

将超声振动技术应用于微细孔的电解加工中，以排除间隙内的加工产物，然而，超声空化现象产生的冲击力会影响电极表面的绝缘层，并加速其破坏。为提高侧壁绝缘电极的使用寿命，采用微弧氧化和阴极电泳工艺在微细钛电极表面形成由陶瓷膜和电泳漆膜组成的双绝缘层。通过超声振动辅助微细孔电解加工实验，对电极侧壁双绝缘层的耐久性进行验证，并分析了超声振动功率、电解液浓度和加工电压对双膜侧壁绝缘电极微细孔加工精度的影响。实验表明：双绝缘层电极在超声辅助微细孔电解加工中显示了很强的绝缘耐久性；当超声振动功率超过一定值后，微细孔电解加工能稳定进行，之后，随着功率的增加，孔的精度改善很小。在稳定加工中，需降低电解液浓度和加工电压，从而减小杂散腐蚀，保证加工孔的形状精度。
장초성진동기술응용우미세공적전해가공중，이배제간극내적가공산물，연이，초성공화현상산생적충격력회영향전겁표면적절연층，병가속기파배。위제고측벽절연전겁적사용수명，채용미호양화화음겁전영공예재미세태전겁표면형성유도자막화전영칠막조성적쌍절연층。통과초성진동보조미세공전해가공실험，대전겁측벽쌍절연층적내구성진행험증，병분석료초성진동공솔、전해액농도화가공전압대쌍막측벽절연전겁미세공가공정도적영향。실험표명：쌍절연층전겁재초성보조미세공전해가공중현시료흔강적절연내구성；당초성진동공솔초과일정치후，미세공전해가공능은정진행，지후，수착공솔적증가，공적정도개선흔소。재은정가공중，수강저전해액농도화가공전압，종이감소잡산부식，보증가공공적형상정도。
Ultrasonic vibration technology had been used in the micro holes electrochemical machining (ECM) to exclude processed products within the gap ,but the impact of ultrasonic cavitation influenced the insulating layers on the electrode surface and accelerated its destruction. In order to improve the life of the sidewall insulated electrode ,the double insulating layer consisting of ceramic insulating film and electrophoretic paint film was formed on the surface of the fine titanium electrode by using the micro-arc oxidation and the cathodic electrophoresis. Through ultrasonic vibration assisted micro holes electrochemical machining experiments ,durability of sidewall double insulation was verified and the effects of ultrasonic vibration power ,electrolyte concentration and machining voltage on the micro hole machining accuracy with the sidewall-insulated electrode was analyzed. The experimental results showed that the double insulation layers displayed a strong durability in ultrasonic vibration assisted micro holes electrochemical machining; when the ultrasonic vibration power exceeded a certain value,the processing was able to stabilize. Afterwards,the machining accuracy changed little with the increase the power. It is necessary to reduce the electrolyte concentration and the machining voltage , thereby reducing the stray corrosion ,for ensuring the shape accuracy of the hole in stable machining.