Basic knowledge of PVD vaccum coating equipment 2
At this stage, PVD coating cannot replace chemical electroplating, and in addition to direct PVD coating on the surface of stainless steel materials, it is required before PVD coating is performed on workpieces of many other materials (such as zinc alloy, copper, iron, etc.) They are electrolessly plated with Cr (chromium). PVD coating is mainly applied to some relatively high-end hardware products. For those hardware products with lower prices, chemical plating is usually carried out instead of PVD coating. The film layer plated by PVD coating technology has the characteristics of high hardness, high wear resistance (low friction coefficient), good corrosion resistance and chemical stability, etc., 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.
PVD film can be directly plated on stainless steel and cemented carbide. For zinc alloy, copper, iron and other die castings, electroless chromium plating should be carried out before PVD plating is suitable. PVD coating technology is an environmentally friendly surface treatment method that can truly obtain micron-level coatings and pollution-free. It can prepare a variety of 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 film is micron level, and the thickness is relatively thin, generally 0.1μm～5μm, and the thickness of the decorative coating film is generally 0.1μm~1μm, so the surface of the workpiece can be improved without affecting the original size of the workpiece. It has various physical and chemical properties, and can maintain the size of the workpiece basically unchanged, and does not need to be processed after plating.
The application of PVD vaccum coating equipment 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 decoration performance 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 increase the service life of the workpiece; this aspect is mainly used in various cutting tools, turning tools (such as turning tools, planing cutters, milling cutters). , Drill bits, etc.) and other products.
The basic knowledge of PVD vaccum coating equipment is not only the above knowledge, for example, according to the type of optics, decoration, winding, hard coating, etc., the type is different, and the related equipment knowledge is also different.
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