摘要 |
The present invention is an electropolishing process means for inner and outer surfaces of a metal, especially applied to a metal that inner and outer surfaces both needing high clean and passivation. The present invention comprises: 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; an insulated structure, which includes an upper insulated cover and a lower insulated cover.
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