Environment-friendly imitation gold plating production technology

Abstract

Environment-friendly imitation gold plating production technology aims at solving the technical problems that the stability of plating solution is poor and the range of controllable color parameters is narrow in the present imitation gold plating technology. Potassium pyrophosphate is used as a main complexing agent, and copper sulfate and zinc sulfate are used as main salt, while nitrilotriaceticacid and seignette salt are used as auxiliary complexing agent for performing Cu-Zn-Sn ternary non-cyanide imitation gold plating. Imitation gold coating similar to real gold can be obtained in the technology. Experiments show that, compared with the previous imitation gold plating technology, the novel imitation gold plating technology is easier to control, the stability is greatly improved, theconcentration of main salt is lower, the technology is simpler and cyanide is not used as the complexing agent anymore. Therefore, compared with the conventional technology, toxicity and pollution ofthe novel technology are reduced significantly, thus benefiting popularization of green production.

Description

technical field [0001] The invention relates to an environment-friendly multi-complex copper-zinc-tin alloy imitation gold electroplating process, which is a means for the surface decoration plating process of metal or non-metal materials. Background technique [0002] The research of environment-friendly imitation gold electroplating process has become a research hotspot at home and abroad because of its huge processing market and the country's increasing environmental protection control. [0003] At present, the cyanide-free imitation gold electroplating process proposed to be applied to production at home and abroad includes binary (Cu-Zn, Cu-Sn) alloys, ternary (Cu-Zn-Sn, Cu-Sn-In) alloys and quaternary (Cu-Zn-Sn) alloys. - Zn-Sn-In, Cu-Sn-In-Ni) alloys. Systems include pyrophosphate, citrate, tartrate, HEDP systems, etc. According to current data records, to obtain a bright imitation gold coating must add appropriate additives, such as some alcohol amines or sulfamic ...

AI Technical Summary

Problems solved by technology

At present, domestic research on cyanide-free imitation gold electroplating is mainly concentrated in the stage of laboratory condition exploration. Due to the instability of the plating solution, it is difficult to realize industrialization. At the same time, the controllable process range of the coating color is narrow, resulting in the variation of product batch color. Not uniform, which is the key to its incomparability to cyanide imitation gold plating, so its process has not been widely used

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