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

[0010]The gold content, pH value, working temperature, replenishment volume for maintenance and stirring rate of electrolytic solution are optimized by adding LJJAS compounding agent to the electrolytic solution, setting the electroforming temperature between 50 to 60 degrees, speed at 0.05 g / h and setting the pH value of electrolytic solution between 7.0 to 7.5. Thus, the disadvantages of unfavorable and unstable matte plating, frequently arisen of shinning matte and maldistribution, weak coating capacity will be conquered. The products have the advantages of high hardness and good rigidity. The hollow gold product will reduce the thickness of gold plating and gold consumption, moreover, it will make the gold plating more effective and even. Therefore, it can achieve even distribution, strong covering capacity, thin coating, short molding time, big size, light weight and high hardness.

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.