Electroless plating, a new surface treatment process, has a bright future
* source: * author: admin * Published on: 2022-08-25 15:31:42 * browse: 30
Electroless plating refers to the process of reducing metal ions into metal and depositing them on the surface of parts to form a metal plating layer by using the reducing agent in the plating solution without an applied current.
Electroless plating, as a new metal surface treatment process, has been widely used in many fields, and has attracted more and more attention because of its energy-saving, environmental protection and simple process. In terms of protection performance, it can improve the corrosion resistance and service life of the workpiece; In terms of functionality, it can improve the wear resistance, conductivity, lubrication and other special functions of machined parts, so it has also become a hot spot of surface treatment technology.
At present, the field of electroless plating in China is constantly expanding. Hardware, electronic communication and computer equipment have become the major demand for electroless plating. Many electroless plating processes and materials are officially developed according to the needs of the development of electronic communication and calculator industry. These industries are paying attention to the corrosion resistance and wear resistance of electroless plating, especially the characteristics of solderability, conductivity, magnetism, connection performance and electromagnetic mask.
For example, electronic equipment must be shielded to prevent electromagnetic and interference, and electroless nickel alloy is recognized as an effective shielding method. In addition, electroless alloy plating is used for crystal oscillators, transistors, IC chips, high-energy microwave tubes, pedestal tubes, ceramic substrates, plugs, computer hard disks, etc.
In the oil, natural gas equipment and other industries, electroless plating is widely used to improve its corrosion resistance. For example, in oil pipelines and various spare parts, if ordinary low-carbon copper spare parts are used, their service life is only 2-3 months; on the contrary, pump equipment, impellers and other parts made of electroless nickel alloy have a service life of more than four months; Another example is that the connectors of civil drinking water pipes are copper products, which are prone to copper rust due to long-term exposure to water and pollute the water source. After electroless plating, the problem of copper rust is solved.
In the chemical industry, due to the use of electroless alloy plating technology to solve the corrosion problem of equipment, the service life of equipment parts has been greatly improved; On the other hand, it also promotes the purity and output of chemical products, so the application prospect in this industry is also considerable.
In the future, electroless plating will enter a period of rapid development in China. There are three reasons:
For the needs of environmental protection, energy conservation and technological progress, China's traditional electroplating industry will limit its development. According to relevant information, there are more than 30000 electroplating factories in China at present. In the future, new electroplating factory licenses will not be issued, and the original old factories will be reduced by 10% every year until they are controlled to about 6000 nationwide. After such a large number of electroplating plants are shut down, their business will be filled by electroless plating.
Second, with the development of some large projects or emerging industries in China, the demand for electroless plating has increased greatly. For example, many units and equipment in the Three Gorges project need to apply electroless plating technology. In addition, with the booming development of the electronic industry, especially the computer and mobile phone industries, electroless plating is also essential.
Third, with the application of special materials and the promotion of the great development of the automobile industry, electroless plating will also be brought into a new field. For example, it is the development trend of the current automobile industry to solve the problem of ethanol and gasoline mixed fuel, and the most urgent task in using mixed fuel is to prevent corrosion of the fuel system. According to the experience of the United States, the use of electroless nickel alloy in various power systems and transmission systems such as automobile carburetors, fuel pumps, oil delivery systems, fuel injectors, etc. can solve the corrosion problem of gasoline mixed fuels, and also improve the horsepower and reliability of automobiles.
With the growing maturity of China's electroless plating technology and the development of domestic automobile industry and electronics industry, electroless plating has brought a broad market and bright prospects.
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