What you need to know about using PVD ion vacuum coating machine to do vacuum coating
PVD technology is a new technology that has emerged in recent years. The prepared film has the advantages of high hardness, low friction coefficient, good wear resistance, and good chemical stability. First of all, the successful application in the field of high-speed steel cutting tools has aroused the great attention of manufacturing industries around the world. While developing high-performance and high-reliability coating equipment, more in-depth coating application research has been carried out on cemented carbide and ceramic tools. Compared with the CVD process, the PVD process has a lower processing temperature, and has no effect on the bending strength of the tool material below 600 ℃; the internal stress state of the film is compressive stress, which is more suitable for the coating of carbide precision and complex tools; PVD The process has no adverse effects on the environment and is in line with the development direction of modern green manufacturing. At present, PVD coating technology has been widely used in the coating of cemented carbide end mills, drills, step drills, oil hole drills, reamers, taps, indexable milling inserts, turning inserts, special-shaped tools, welding tools, etc. handle.
PVD technology not only improves the bonding strength of the film and the tool matrix material, but also makes the coating composition develop from the first generation tin to tic, TiCN, ZrN, CrN, MoS2, TiAlN, tialcn, tin-AlN, CNx, DLC and ta- C composite coating.
1: What is PVD? Vacuum coating technology
PVD is the English abbreviation for physical vapor deposition, and the Chinese means "physical vapor deposition". It refers to a thin film preparation technology that physically deposits materials on a workpiece under vacuum conditions.
2: What is PVD coating? What is a PVD coating machine?
Physical vapor deposition (PVD) technology is mainly divided into three categories: vacuum evaporation coating, vacuum sputtering coating and vacuum ion coating. Compared with the three major categories of PVD technology, the corresponding vacuum coating equipment includes vacuum evaporation coating machine, vacuum sputtering coating machine and vacuum ion coating machine. In the past ten years, the rapid development of vacuum ion plating technology has become one of the surface treatment methods. What we usually call PVD coating is vacuum ion coating; in general, PVD coating machine refers to vacuum ion coating machine.
3: What is the principle of PVD coating?
The principle of ion plating (PVD) technology is to use low-voltage high-current arc discharge technology under vacuum conditions. The target is evaporated, and the evaporated material is ionized by the gas discharge. Under the action of an electric field, the evaporated substance or its reaction product is deposited on the workpiece.
4: What are the advantages of PVD coating compared with traditional electroless plating (water plating)?
The similarity between PVD coating and traditional electroless plating is that both belong to the category of surface treatment, which can make one material cover the surface of another material in some way. The difference between the two is: PVD coating has greater adhesion to the surface of the workpiece, higher hardness of the coating, better wear resistance and corrosion resistance, and more stable coating performance; PVD coating can be coated with a wider range of films It can be coated with a variety of colors to make it more beautiful; PVD coating will not produce toxic or polluting substances.
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