Patent ID: 6203689
Filing Date: 2001-03-20
Classification: C25F,Y10S

Abstract:
An electropolishing apparatus for polishing an inner face of a deep hole of an article comprising:a support for holding the article with the hole opening facing upward;an electrode adapted for insertion into the hole;flow guiding means for directing up electrolyte along the inner face of the hole, said flow guiding means comprising a through hole disposed in the electrode longitudinally, said flow guiding means adapted to form a gap between an outer face of the electrode and the inner face of the hole;a plurality of magnets adapted for arrangement around the article for forming a magnetic field in a zone including the article; anda plurality of removers fixed on a outer face of the electrode to remove an electrolysis coat from the inner face of the hole, said electrode adapted for moving up and down in the hole, and said support adapted for rotating the article held thereon.