CAJ | 학술논문

提出了一种利用动态场致射流作为工具电极进行微细放电加工的方法。该方法是利用工件和喷嘴之间的电势差形成高压电场，使喷嘴出口的带电液滴同时受到表面张力和电场力的作用，带电液滴形成泰勒锥。在强电场力作用下，泰勒锥顶端产生一束极微细的电解液射流。当场致射流喷射到工件表面附近时，高压电场击穿射流尖端与工件间的气体介质，产生放电现象，工件表面放电点局部材料因放电所产生的热量而熔融、气化，从而产生材料蚀除。
제출료일충이용동태장치사류작위공구전겁진행미세방전가공적방법。해방법시이용공건화분취지간적전세차형성고압전장，사분취출구적대전액적동시수도표면장력화전장력적작용，대전액적형성태륵추。재강전장력작용하，태륵추정단산생일속겁미세적전해액사류。당장치사류분사도공건표면부근시，고압전장격천사류첨단여공건간적기체개질，산생방전현상，공건표면방전점국부재료인방전소산생적열량이용융、기화，종이산생재료식제。
The dynamic field jet is proposed as a tool electrode of the micro electric discharge machining. The high electric field is formed through the potential between the workpiece and the nozzle,and the charged droplets in nozzle are balanced by the surface tension force and the electric force,and then the Taylor cone is formed. When the electric field intensity is large enough,Taylor cone tip generates a bunch of very fine electrolyte jet ,and when the jet injection is near the workpiece surface,the high electric field break down the gas medium,resulting in a discharge phenomenon. The material erosion on the local surface of the material is removed through melting, vaporization by the heat of the electrical discharge.