The history of the development of electroplating in China, the history of the development of electro

The development of China's electroplating industry was after the founding of New China. First of all, in order to solve the problem of cyanide pollution, the research work of cyanide-free electroplating began in the 70s of the 20th century, and the cyanide-free galvanizing, copper, cadmium, and gold plating were successively put into production; Hard chrome plating of large parts, low concentration chromium plating, low chromic acid passivation, cyanide-free silver plating and anti-silver discoloration, trivalent chromium salt plating have been successively applied to industrial production; And realize the direct acquisition of bright plating from the plating solution, such as plating bright copper, bright nickel, etc., which not only improves the product quality, but also improves the heavy polishing labor; In terms of the research of new processes and equipment, bipolar electroplating, commutation electroplating, pulse plating, etc. have emerged. Double-layer nickel, three-layer nickel, nickel-iron alloy and anti-friction coating with high corrosion resistance are also used in production; Brush plating, vacuum plating and ion plating have also achieved promising results.

After the reform and opening up, China's electroplating industry has developed by leaps and bounds. In particular, significant progress has been made in the development of zinc-based alloy electroplating, composite plating, electroless nickel-phosphorus alloy plating, electronic electroplating, nano electroplating, various color plating, multi-functional electroplating and various cyanide and chromium substitution processes.

And here comes the bad one, of course.

What is the second largest electroplating process in the world, there are advantages and disadvantages of the stainless steel sandblasting process, although the performance of stainless steel has improved, but the sandblasting board can be plated with color, but there is still a color difference between the baked color and the ordinary stainless steel plating. Sandblasted stainless steel is also a popular product in the color stainless steel plate industry, and after the electroplating process, it has become the second largest process in the industry. After using the sandblasting process on the smooth surface of stainless steel, it can improve the fineness of the surface.

Secondly, it increases the uniformity of the entire decorative panel. I hope it can help you. If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress.

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Electroplating began with the invention of cyanide gilding by the British in 1838, which was mainly used for decoration. In the 40s of the 20th century, the development of the electronics industry and the soaring price of gold, most of which used thin gold plating. In order to further save money, brush gold plating (i.e. selective gold plating) appeared in the 60s of the 20th century, and pulse gold plating and laser gold plating appeared in the 80s of the 20th century.

In 1950, the stability of potassium gold cyanide in the presence of organic acids was discovered, and then neutral and weakly acidic gold plating solutions appeared. In the late 60s of the 20th century, cyanide-free gold plating was also used, especially sulfite gold plating was the most widely used.

At present, the commonly used gold plating solution can be divided into four categories: alkaline cyanide, acidic microcyanide, neutral microcyanide and non-cyanide. Most of the gold plating solutions are patented formulations, and the additives are made by professional companies**.

Compared with electroplating, the history of nickel plating solution is relatively short, and its real application to industry in foreign countries is only in the late 70s and early 80s. In 1844, it was discovered that nickel metal could be deposited by hypophosphite reduction from an aqueous solution of nickel salts. The real discovery of electroless nickel plating technology and its application to this day was in 1944, when the United States National Bureau of Standards and the discovery of the catalytic properties of the formation coating were clarified, and the method of depositing non-powdered nickel was discovered, which made the industrial application of electroless nickel plating technology possible.

However, the electroless nickel plating solution at that time was extremely unstable and therefore had no practical value in the strict sense of the word. The application of electroless nickel plating process is nearly a decade later than the results of laboratory research. After the Second World War, the American General Transportation Company became interested in this process, they wanted to transport the inner surface of the caustic soda cylinder nickel plating, which could not be achieved by ordinary electroplating methods, and five years later they researched and developed the technology of electroless nickel-phosphorus alloy and published many patents.

Their first pilot line was built in 1955 and a commercially useful electroless nickel plating solution was produced under the commercial name "Kanigen". Abroad, especially in the United States, Japan and Germany, electroless nickel plating has become a very mature high-tech and has been widely used in various industrial sectors. China's electroless nickel plating industrial production started late, but in recent years the development is very rapid, not only a large number of first-class publications, but also held a national electroless plating conference, according to the fifth electroless plating annual meeting published articles statistics has more than 300 manufacturers, but this number should be extremely conservative at that time.

It is estimated that the total size of the domestic electroless nickel plating market should be about 30 billion yuan per year, and it will develop at a rate of 10% to 15% per year.

At present, there are more than 15,000 electroplating enterprises in China, of which the annual output value of enterprises above designated size reaches 100 billion yuan, and the processing output is 1 billion square meters. Electroplating is not only an important processing link in the traditional machinery industry, but also an important supporting link in the fields of high-end equipment manufacturing industry and advanced information technology industry. Therefore, the electroplating industry has a pivotal position in the future development, and its irreplaceable characteristics make it have a unique role.

The Prospective Industry Research Institute believes that because most of China's electroplating enterprises were established relatively early, electroplating enterprises generally have problems such as small investment scale, low technology content, and insufficient investment in environmental protection.

With the awakening of people's environmental awareness and increasingly perfect environmental protection regulations, the traditional "two high and one low" electroplating enterprises are facing unprecedented challenges, green management is conducive to the rational use of resources, enhance the environmental awareness of enterprises, and improve the competitiveness of enterprises, therefore, it is the inevitable choice for electroplating enterprises to break through the bottleneck of development and achieve sustainable development.