The PVD (Physical Vapor Deposition) process is widely used for surface treatment of stainless steel due to its ability to provide various functional and decorative coatings. Here’s the process of the PVD plating on stainless steel:

1. Surface Preparation: The stainless steel surface needs to be thoroughly cleaned and prepared before the PVD plating process. This typically involves removing any contaminants, grease, or oxide layers through cleaning methods such as degreasing, polishing, or etching.

2. Vacuum Chamber Preparation: The stainless steel parts or substrates to be plated are loaded into a vacuum chamber. The chamber is then pumped down to create a low-pressure environment.

3. Target Material Preparation: A titanium or titanium alloy target is placed within the vacuum chamber. The target material will be used as the source for the PVD

4. ionization and Vaporization: The PVD process involves ionizing and vaporizing the target material. A high-energy plasma is created within the vacuum chamber, and the plasma bombardment causes atoms or molecules from the target to be released into the chamber as vapor.

5. Deposition: The vaporized titanium atoms or molecules travel through the vacuum chamber and deposit onto the stainless steel surface. This deposition process forms a thin film of titanium on the substrate. The distance between the target and the substrate, as well as the duration of deposition, determines the thickness of the coating.

6. Post-Treatment (Optional): Depending on the specific requirements, post-treatment steps can be performed to modify the properties of the deposited titanium coating. These steps may include brushed satin, mirror polishing, or other application of protective topcoats to enhance durability and appearance.

Gold, Brass, or Rose Gold Finishes: PVD can be used to deposit thin films of gold, brass, or rose gold onto stainless steel, creating an attractive and luxurious appearance. Black or Colored Coatings: PVD can achieve black, blue, gray, or other colored coatings on stainless steel, providing aesthetic options for design purposes.

In addition to these commonly used titanium plating colors, other RAL colors can also be selected as PVD plating colors. In addition to these commonly used titanium plating colors, other RAL colors can also be selected as PVD plating colors. It is important to consider that the colors achieved through PVD plating can be influenced by various factors, including the plating technique employed, the thickness of the PVD layer, the presence of additional coatings or treatments, and the angle at which light is reflected.  Therefore, the resulting PVD color may not be the same as expected