US 10,704,159 B2 · Method of metal polishing and oxidation film process and system thereof

Abstract

The present invention is a method of metal polishing and oxidation film process applied on a metal workpiece. The process comprises (a) providing the metallic workpiece in an electrolysis polishing liquid; (b) a temperature control device controlling a liquid temperature of the electrolysis polishing liquid; (c) a voltage supply device to exercising an operating voltage between the metallic workpiece and the electrolysis polishing liquid; (d) polishing the surface of the metallic workpiece and forming an oxidation layer by regulating the temperature control device and the voltage supply device; and (e) determining a film thickness of the oxidation layer formed on the metallic workpiece according to an operation time, wherein the film thickness is related to a roughness and a color displayed on the metallic workpiece. The metallic workpiece may be dyed together during the polishing process without adding any dyes. The present invention further provides a system of alloy oxidation film process.

Claims9

Dependent claims

A method of metal polishing and oxidation film process applied on a metallic workpiece comprising:

providing the metallic workpiece in an electrolysis polishing liquid, wherein the electrolysis polishing liquid comprises an inorganic acid and a bio-bacteria;
a temperature control device controlling a liquid temperature of the electrolysis polishing liquid;
a voltage supply device exercising an operating voltage on the electrolysis polishing liquid;
forming an oxidation layer on the metallic workpiece by regulating the temperature control device and the voltage supply device, wherein the electrolysis polishing liquid is operated under a condition that the liquid temperature is less or equal to 5° C. and the operating voltage is more or equal to 15 V;
and
determining a film thickness of the oxidation layer formed on the metallic workpiece according to an operation time, wherein the film thickness is related to a roughness and a color displayed by the metallic workpiece.

3 more elements

A system of metal polishing and oxidation film process applied on a metallic workpiece comprising:

a first electrode being connected to an external positive voltage;
a second electrode being connected to an external negative voltage, wherein the voltage difference between the external positive voltage and the external negative voltage is more or equal to 15 V;
a liquid tank providing with the first electrode and the second electrode, and an electrolysis polishing liquid injecting into the liquid tank to contact at least part of the metallic workpiece;
a temperature control device being configured to a side of the liquid tank, and the temperature control device providing to regulate a liquid temperature of the electrolysis polishing liquid in the liquid tank, wherein the liquid temperature is less or equal to 5° C.;
wherein a film thickness of an oxidation layer on the metallic workpiece is determined by regulating the liquid temperature, the external positive voltage and the external negative voltage within a time duration;
wherein the electrolysis polishing liquid comprising an inorganic acid and a bio-bacteria, and a range of volume ratio of the inorganic acid to the bio-bacteria between 20:1 and 60:1.

3 more elements

Dependencies are inferred from the claim text.

Method of metal polishing and oxidation film process and system thereof

Life of this patent

Method of metal polishing and oxidation film process and system thereof

Life of this patent

Abstract

Claims9