Gold color writing instrument PVD coating machine
PVD coating process is specifically designed for writing instrument pen cap, barrel and plug.
The coating that we use for watches is TiN, AlTiN, DLC (Diamond like Carbon) which is a combination of Carbon, Titanium and Nitrogen, that enhances the watch casing and band in a number of ways:
PVD Coating Colours
PVD coatings can be deposited with a wide colour range. Metals used as target material in decorative PVD processes are zirconium, titanium, chromium, titanium-aluminum alloys and niobium. Ceramic coatings are deposited to increase the hardness of the coating. This is achieved by introducing reactive gases during the deposition process. The most widely used reactive gases for decorative coatings are nitrogen and methane or acetylene to produce metal-nitride, metal-carbide, metal-carbonitride and diamond like carbon DLC coatings. Also oxygen can be used to produce oxides, oxinitrides, etc. The decorative coatings are produced in a certain colour range, depending on the metal-to-gas ratio in the coating and the structure of the coating. Both of these factors can be altered by changing the deposition parameters.
Zirconium is the most widely used target material for decorative coatings in sanitary and door hardware and other applications such as watch cases because of the relatively wide colour range that is possible, ZrCN for example can look exactly the same as gold if the composition is correct.
The process parameters to deposit each colour are stored in software recipes with various different process steps. During the coating process all the relevant process parameters are continuously monitored and controlled by an automatic computer control system. As a result it is possible to achieve excellent coating quality reproducibility.
Computer controlled PVD coating systems offering high flexibility and reliability are available. Products made of brass, zinc and ABS will all look the same colour no matter when the coatings were deposited.
The PVD coating equipment comes with all facilities, control systems and auxiliary appliances for the deposition of many metals on many substrates.
It’s equipped with the newest Ion Bombardment (plasma) option for preparation and pre-treatment of the part to be metalized: through the Ion Bombardment application it is possible to increase the adhesion onto the substrate of the metal deposited. Ion Bombardment process is applied directly in the same cycle of metalizing, before the metal deposition phase. The automation software and the systems guarantee maximum uniformity and quick operation.