Cathode apparatus and method for plasma electrolytic polishing of inner surface of pipe

摘要

In one embodiment of the present invention, a pair of guide insulation portions that are inserted and supported at the open ends of both sides of the tube; A main cathode installed between the pair of guide insulating portions so that each end portion of each side passes through each of the pair of guide insulating portions; And an auxiliary cathode surrounding the circumference of the main cathode and installed between the pair of guide insulating portions. It provides a plasma electrolytic polishing cathode device comprising a. According to an embodiment of the present invention, by providing an auxiliary cathode in addition to the main cathode, it is possible to increase the voltage and improve the efficiency of plasma electrolytic polishing. In addition, since it is located inside the tube, plasma electrolytic polishing of the inner surface of the tube can be smoothly performed.