Processing technique for hard pure gold accessories

Abstract

A processing technique of electroforming for hard pure gold accessories, including carving waxwork, making silica molding, grafting wax, trimming wax, oiling, electroforming, wax removing and quality inspection, characterized in that LJJAS compounding agent was added to the electrolytic solution, the electroforming temperature is between 50 to 60 degrees, the electroforming speed is 0.05 g / h and pH value of electrolytic solution is between 7.0 to 7.5. Thus, even distribution, strong covering capacity, thin coating, short molding time, big size, lighy weight and high hardness can be achieved. This processing technique is particularly suitable to the gold processing industry.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority under 35 U.S.C. §119 to China Patent Application No. 200810158017.4, filed on Oct. 22, 2008, in the China Intellectual Property Office, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Technology Field[0003]This invention regards a gold processing technique, more particularly, it regards a processing technique for hard pure gold accessories.[0004]2. Technology Background[0005]The range and types of gold jewelries, accessories and decorative articles are getting more and more wide and plentiful with the developing of modern industry and high technology. The demands of gold accessories in quality, appearance and size are also growing. Gold electroplating is a key stage in the processing technique of gold accessories. In current gold electroplating, some factors like gold content, pH value and working temperature of electrolytic solution will lead to maldist...

AI Technical Summary

Benefits of technology

This patent describes a processing technique for hard pure gold accessories that achieves even distribution, strong covering capacity, thin coating, short molding time, big size, light weight, and high hardness. The technique involves adding a compounding agent to the electrolytic solution, optimizing the gold content, pH value, working temperature, replenishment volume, and stirring rate. The process includes carving wax work, making silica molding, grafting wax, trimming wax, oiling, electroforming, wax removing, and quality inspection. The technique can overcome the disadvantages of unfavorable and unstable matte plating, frequently arisen of shinning matte and maldistribution, and weak coating capacity. The products have the advantages of high hardness and good rigidity.

Problems solved by technology

In current gold electroplating, some factors like gold content, pH value and working temperature of electrolytic solution will lead to maldistribution, long molding time and big thickness of gold plating, frequently arisen of shinning matte and small size, big weight and low hardness of products.