Electropolishing process means for inner and outer surfaces of a metal

摘要

An electropolishing device having: an electrode device, which includes a positive electrode guide, a negative electrode guide, a positive electrode plate, a negative electrode plate and a negative working electrode; a clamping apparatus, which includes at least an insulated screw, an upper insulated piece and a lower insulated piece; and an insulated structure, which includes an upper insulated cover and a lower insulated cover.