CAJ | 학술논문

微细电火花加工技术因其非接触加工等显著特点，在难加工合金材料微细制造领域具有突出的优势与潜力。选择对加工性能影响较大的峰值电流、脉宽、脉间及电容4种电参数，开展了难加工合金微细通道电火花加工正交实验，并结合实验结果分析了电参数对加工时间和电极损耗的影响规律。最后，针对两个加工目标，采用多目标优化算法得到了最优电参数组合，并分别在不锈钢、殷钢、钛合金3种难加工合金材料上加工了微细通道。实验结果表明，放电参数对加工时间和加工效率具有显著影响，采用所提出的多目标优化方法可以在保证加工质量的同时有效提高加工效率。
미세전화화가공기술인기비접촉가공등현저특점，재난가공합금재료미세제조영역구유돌출적우세여잠력。선택대가공성능영향교대적봉치전류、맥관、맥간급전용4충전삼수，개전료난가공합금미세통도전화화가공정교실험，병결합실험결과분석료전삼수대가공시간화전겁손모적영향규률。최후，침대량개가공목표，채용다목표우화산법득도료최우전삼수조합，병분별재불수강、은강、태합금3충난가공합금재료상가공료미세통도。실험결과표명，방전삼수대가공시간화가공효솔구유현저영향，채용소제출적다목표우화방법가이재보증가공질량적동시유효제고가공효솔。
Due to its contact-less process ,micro-electrical discharge machining (EDM ) enables very small machining forces between the electrode and workpiece , and it has been one of the most important technologies in micro-manufacturing field of difficult-to-cut alloy materials .Discharge peak current ( I ) , pulse duration ( Ton ) , pulse interval ( Tof ) and capacitance ( C ) are selected as experimental parameters , and an orthogonal experiment of micro-channels on difficult-to-cut alloy materials is carried out . Moreover , the machining characteristics of the electrical parameters on machining time and electrode wear are analyzed according to the results of experiments .Finally ,a multi-objective optimization method is employed to achieve the highest processing efficiency and the lowest electrode wear ,and micro-channels on the three kinds of difficult-to-cut materials ,stainless steel ,invar steel ,titanium alloy ,are machined with the optimal parameters .The experimental results show that the electrical parameters have a great impact on processing efficiency and quality ,and the processing efficiency can be improved greatly without losing machining quality by the proposed multi-objective optimization method .