Because the continuous improvement of the domestic economy and the improvement of people’s living standards have greatly affected the position and role of the coating industry in the national economy, the domestic market has more and more requirements for product coating, and the market demand is growing. The application of vacuum technology includes electronic technology, aerospace technology, accelerator, surface physics, microelectronics, material science, medicine, chemical industry, industrial and agricultural production, daily life and other fields. The application of vacuum pump coating is a big branch of vacuum application, which is widely used in optics, electronics, physical and chemical instruments, packaging, machinery and surface treatment technology. Next, we will introduce the application of screw vacuum pump in coating equipment.
The main methods of vacuum coating are as follows:
Vacuum sputtering: when high-energy particles (positive ions accelerated by electric field) hit the solid surface, they exchange energy with atoms and molecules on the surface, so that these atoms and molecules splash out.
Vacuum evaporation: in vacuum, the material used to make the film is heated and evaporated to make it deposit on a proper surface.
dry screw vacuum pump advantages:
1. The surface of working chamber and screw rotor is provided with anti-corrosion coating, which can adapt to severe working conditions
2. The gas is not compressed in the pump, so it is suitable to extract condensable gas
3. No fuel consumption, no dripping
4. Simple structure and convenient maintenance
5. The pumped gas is directly discharged from the pump body, without water pollution, environmental protection pressure, and gas recovery is more convenient
Screw vacuum pump is an indispensable equipment in the production of vacuum coating equipment. Its main function is to control the temperature of the coating machine to ensure the quality and production efficiency of the plated parts. Its application can avoid the malpractice caused by the influence of ambient temperature on the cooling of tap water and cooling tower, and ensure that the coating machine works in high precision and high efficiency at all times. The cooling effect of vacuum pump also directly affects the quality of products. With the rapid development of vacuum coating industry, high-quality and efficient screw vacuum pump has become the production equipment that vacuum coating manufacturers attach great importance to.
Screw vacuum pump for coating equipment is an important part of coating industry. Without advanced and efficient coating machine, there will be no modern coating industry. Compared with the traditional chemical coating and water and electricity coating, the coating materials of vacuum ion coating are deposited on the surface of the workpiece by plasma in the vacuum environment, which solves the problem of solution pollution in the chemical coating, and does not produce toxic or polluting substances; the coating has higher hardness, good wear resistance and corrosion resistance, and more stable performance, such as hard alloy cutter plating The processing temperature can be controlled below 150-500 ℃, which is suitable for a variety of matrix materials, and can be used to prepare colorful films.
Therefore, since the 1950s, chemical coating has been gradually replaced by vacuum coating, which is more in line with the development direction of modern green manufacturing. Vacuum coating is the inevitable trend of the development of coating industry. The application of screw vacuum pump in coating equipment has attracted the attention of manufacturing industry in the world.