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US 10,975,491 B2Granted
Use of H2SO4 as an electrolyte in processes for smoothing and polishing metals by ion transport via free solids
AssigneeDrylyte, S.L.
InventorPau Sarsanedas Millet
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Abstract
The disclosure relates to the use of H2SO4 as an electrolyte in processes for polishing metals, specifically metal parts, for example in jewellery. According to some embodiments the polishing is carried out based on ion transport with electrically conductive free solids in a gaseous environment. According to some embodiments the solids comprise spherical particles with porosity and affinity for retaining the electrolyte so that they have appreciable electric conductivity.
Claims17
A method for polishing a metal part, the method comprising:
- electrically coupling the metal part to a first pole of a current generator;
- and
- subjecting the part to friction with non-electrically conductive polymeric bodies charged with a negative electrical charge in a gaseous environment, the non-electrically conductive polymeric bodies retaining an aqueous solution of H2SO4 as an electrolyte, the non-electrically conductive polymeric bodies being electrically coupled to a second pole of the current generator and configured to polish the metal part via ion transport, the second pole having opposite polarity to the first pole.
Dependencies are inferred from the claim text.