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Titanium and its alloys have a wide range of applications in the aerospace, medical equipment and other fields , such as aviation metal strainer , aviation engine damping bushing fine structure , as well as artificial bone and joint , cardiovascular stents and other implants . Currently processing the electrolytic method , the laser processing of the laser processing and the mask fine titanium used can be obtained three-dimensional three - dimensional structure, but it is easy to produce a heat-affected surface of the workpiece and burrs ; mask fine electrolytic controllable depth poor and difficult to process complex three-dimensional structure . Titanium micromachining above , our group of innovative titanium electrochemical micromachining . Titanium electrochemical micromachining Mechanism analyzed in theory to analyze the relationship between the polarization voltage and current through the polarization curves , to create a physical model for the micro electrolysis electrode potential of the single electrode . Pole electric field numerical simulation using the finite element method and obtained the law of the electric field distribution , a fine cathode production and design provides a theoretical basis . The strong titanium self blunt , in the conventional water-soluble electrolyte in the surface thereof can easily passivation . Through the polarization curve analysis test , pure methanol can be a good solution to this problem . Were selected according to the requirements of the electrochemical micromachining , tungsten, copper material prepared fine electrodes . Fine array electrode can improve the efficiency of the titanium electrochemical micromachining , ultrashort pulse power processing , due to the equivalent capacitance increases between the poles , the machining gap and the voltage subsequently becomes large delocalized deteriorates , stray corrosion serious. In this paper, the DC low voltage in pure methanol solution titanium electrochemical micromachining test , processing pores and fine array pit structure . Optimized by single factor test machining gap, electrical parameters , the feed rate of the processing quality , process parameters obtained for electrochemical micromachining of titanium . The test results show that when the machining voltage is 4V, and the feed rate was 0.04 μm / s , and the machining gap of 8 ~ 15μm , the machining accuracy and efficiency optimum . Laid the foundation for future processing micro three-dimensional structure in titanium engineering applications .
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