Trivalent Decorative Chromium Plating Has Become The Trend Of Electroplating.

Plastic plating-trivalent decorative chromium plating has become the trend of electroplating.
The study of trivalent chromium plating began in the 1930s. By the 1960s, there was a method of adding urea to sulfuric acid solution. In the 1980s, trivalent chromium plating technology with formic acid as complexing agent was developed. At present, the more popular technology is the improved trivalent chromium plating technology based on the technology developed by Canning Company. The trivalent chromium plating technology of Alecra-3 introduced by Albright & Wilson Company was reported in China in the 1980s. Related research has been carried out in China, but there is no industrial product launch yet.
In particular, the industrial technology of decorative trivalent chromium plating has been mature and has been adopted in Europe, the United States and Japan. China's electroplating industry should also give proper attention.
As a harmful pollutant, hexavalent chromium is more and more strictly restricted in the electroplating industry. The relevant regulations have changed from governance in the past to restrictions on use. The United States, Japan, Europe and other countries and regions have also formulated strict restrictions on the use of chromium, not only in the form of acid fog and the discharge of hexavalent chromium from wastewater, but also on the use of chromic acid. Including the tracing of the status of cleaner production in the country of origin, it is also put forward as a concept of globalization. With the establishment of China's status as an international manufacturing center, China's electroplating industry should not only follow the norms of national environmental protection laws and regulations, but also face the challenge of green barriers in international commodity exchanges. Therefore, as a surface treatment industry, it is necessary to determine the technology to replace hexavalent chromium plating.
Now industrialized trivalent chromium plating can only be used to replace decorative hexavalent chromium plating because its hardness can not be compared with hexavalent chromium engineering plating. California and other areas in the United States are very strict because of the first implementation of EPA (Environmental Protection Agency). Most of them use trivalent chromium plating instead of hexavalent chromium plating. Since the 1990s, more than 120 companies in the United States have actually adopted trivalent chromium plating technology, and a number of companies have adopted it in other countries such as Norway, Britain, France, Spain, Italy and so on. Due to the strict environmental protection regulations in Norway, there are also high expectations for trivalent chromium plating. Japan, on the other hand, implemented the single-slot trivalent chromium plating arrangement electroplating enterprises in 1996.
Can use trivalent decorative chromium plating products are car handles, locks, internal and external decorations; motorcycles, bicycles other parts; cover, cover, heating equipment accessories; lighting, plumbing devices; gardening, farm supplies; hardware tools; furniture, store shelves and so on.