PVD Coating Technology

Overview of PVD Coating Technology.

PVD (physical vapor deposition) coating technology is mainly divided into three categories: vacuum evaporation coating, vacuum sputtering coating and vacuum ion coating. Corresponding to 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 coating technology has been the fastest, and it has become one of the most advanced surface treatment methods today. What we usually call PVD coating refers to vacuum ion coating; what we usually call PVD coating machine refers to vacuum ion coating machine.

The specific principle of PVD coating (ion coating) technology is to use low voltage and high current arc discharge technology under vacuum conditions, use gas discharge to evaporate the target material and ionize both the evaporated material and the gas, and use the acceleration of the electric field to deposit the evaporated material and its reaction products on the workpiece.

Characteristics of PVD coating film: 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, and the film layer has a longer life; at the same time, the film layer can greatly improve the appearance and decorative performance of the workpiece.

The main industries where PVD coating technology is currently applied are mainly divided into two categories: decorative coating and tool coating. The purpose of decorative coating is mainly to improve the appearance, decorative 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 knives and scissors, turning tools (such as turning tools, planers, milling cutters, drill bits, etc.), various hardware tools (such as screwdrivers, pliers, etc.), various molds and other products.