A Physical Vapor Deposition (PVD) coating machine is a vacuum-based equipment used to apply thin, durable, and high-performance coatings onto various surfaces. The process involves vaporizing a solid material, known as the target, and depositing it onto a substrate as a thin film. Common PVD techniques include sputtering and evaporation, each suited for different applications and materials.

The machine primarily consists of a vacuum chamber, a pumping system to create high vacuum, evaporation or sputtering sources, and a power supply. During operation, the substrate is placed inside the evacuated chamber. The target material is then vaporized using thermal energy or particle bombardment. The vaporized atoms travel through the vacuum and condense uniformly on the substrate's surface, forming a strong, adhesive coating.