Introduction to the basic knowledge of PVD vacuum coating machine coating

   To enter a new industry, you need to start with the most basic knowledge, and then gradually deepen the research. The same is true in the PVD vacuum coating equipment industry. It is necessary to start from the basic knowledge of PVD vacuum coating equipment. For example, the structure, principle, technology of coating equipment, maintenance of the machine in the later period, and the completion of the overall effect of the final product coating, all need to be done step by step. Zhicheng Technology introduces the five basic knowledge of PVD vacuum coating machine coating industry in detail. If you want to enter or prepare to enter the vacuum industry partner, you can refer to and learn:

       1. PVD (physical vapor deposition) technology is mainly divided into three categories, vacuum evaporation coating, vacuum sputtering coating and vacuum ion coating. Compared with the three categories of PVD technology, the corresponding vacuum coating equipment also includes vacuum evaporation coating machine, vacuum sputtering coating machine and vacuum ion coating machine. In the past ten years, the development of vacuum ion plating technology is the fastest, and it has become one of the most advanced surface treatment methods. What we usually call PVD coating refers to vacuum ion coating; what we usually call PVD coating machine refers to vacuum ion coating machine

       2. Vacuum multi-arc ion coating machine (PVD coating technology, its principle is that under vacuum conditions, using low-voltage, high-current arc discharge technology, using gas discharge to evaporate the target and ionize the evaporated material, in the role of the electric field Under the process, the evaporated substance or its reaction product is deposited on the workpiece. The same point of PVD coating and traditional electroless plating is that both belong to the category of surface treatment, and they both cover one material on the other in a certain way. The difference between the two is that the bonding force between the PVD coating film and the surface of the workpiece is greater, the hardness of the film is higher, the wear resistance and corrosion resistance are better, and the performance of the film is more stable; The types of films that can be plated by PVD coating are more extensive, and the colors of various films that can be plated are also more and more beautiful; PVD coating does not produce toxic or polluting substances.

       3. At this stage, PVD coating cannot replace chemical electroplating, and in addition to PVD coating directly on the surface of stainless steel materials, before PVD coating is performed on workpieces of many other materials (such as zinc alloy, copper, iron, etc.), Both need to be electrolessly plated with Cr (chromium) first. PVD coating is mainly used on some relatively high-end hardware products. For those hardware products with lower prices, chemical plating is usually performed without PVD coating. The film plated by PVD coating technology has the characteristics of high hardness, high wear resistance (low friction coefficient), good corrosion resistance and chemical stability, and the life of the film is longer; at the same time, the film can greatly Improve the appearance and decoration performance of the workpiece.

       4. The PVD film layer can be directly plated on stainless steel and cemented carbide. For zinc alloy, copper, iron and other die castings, electroless chromium plating should be performed first, and then PVD plating is suitable. PVD coating technology is an environmentally friendly surface treatment method that can truly obtain micron-scale coatings without pollution. It can prepare various single metal films (such as aluminum, titanium, zirconium, chromium, etc.), nitride films (TiN [titanium gold ], ZrN [Zirconium Gold], CrN, TiAlN) and carbide films (TiC, TiCN), and oxide films (such as TiO, etc.). The thickness of the PVD coating layer is micron level, and the thickness is relatively thin, generally 0.1μm ~ 5μm, and the thickness of the decorative coating layer is generally 0.1μm ~ 1μm, so the surface of the workpiece can be improved without affecting the original size of the workpiece. Various physical properties and chemical properties can be maintained, and the size of the workpiece can be maintained basically unchanged, and no further processing is required after plating.

       5. The application of PVD coating technology is mainly divided into two categories: decorative plating and tool plating. The purpose of decorative plating is mainly to improve the appearance and decorative properties and color of the workpiece while making the workpiece more wear-resistant and corrosion-resistant to extend its service life; this aspect is mainly used in various fields of the hardware industry, such as door and window hardware, locks, bathroom hardware and other industries. The purpose of tool plating is mainly to improve the surface hardness and wear resistance of the workpiece, reduce the friction coefficient of the surface, and improve the service life of the workpiece; , drill bits, etc.) and other products