Vacuum PVD Black Coating Machine for Watches, Jewellery

 

Vacuum PVD Black Coating Machine  is designed for decorative coatings on small items such as watches and jewellery, etc. It comes with a small smart vacuum chamber, it can be with arc ion deposition system and with MF magnetron sputtering coating systems. It allows you to obtain high quality PVD colors. 

 

                           (Gold coating made by PVD machine)                                                       (Black color made by PVD coating system)                            

PVD coating machine allows your to apply delicate color on your items. The common colors includes dark black, blue, golden, rose golden, champagne, grey, pink, etc.
The coating system works for different base material of items after cleaning process. It makes your products more beautiful and be popular in the market.
Small coater is also available for small batch of production.
Available coatings:  Different metal coatings, TiN(titanium nitride), Titanium oxidation, silver, aluminum, chrome, etc. 

The working principle of black decorative PVD coating machine is mainly based on vacuum ion plating or magnetron sputtering coating technology, which is used to coat black decorative film on the surface of workpiece. PVD, or Physical Vapor Deposition, is the abbreviation of Physical Vapor Deposition, which is a technology that deposits materials on the surface of workpieces by physical means in vacuum environment to form thin films. Under the vacuum condition, the arc discharge technology with low voltage and large current is used to make the gas discharge lead to the evaporation of the target material, and the evaporation material and the gas are ionized, so that a layer of uniform and compact black film is formed on the surface of the workpiece.

 Coating process 
 Pretreatment: clean, degrease and derust the workpiece to ensure that the surface of the workpiece is clean and free of impurities. 
 Vacuum pumping: pumping the coating chamber to a vacuum state to eliminate the influence of oxygen, water vapor and other impurities on the coating quality. 
 Coating: Under vacuum condition, the target material is evaporated and ionized by arc discharge, and then a black film is formed on the surface of the workpiece. 
 Cooling: after the coating is completed, the workpiece is cooled to ensure the bonding force between the film and the surface of the workpiece. 
 
Some advantages of PVD coating 
 High hardness and wear resistance: The black decorative PVD coating has high hardness, which can significantly improve the wear resistance of the workpiece. 
 Excellent corrosion resistance: PVD coating has good corrosion resistance and can resist the corrosion of various chemical substances. 
 Rich color: By adjusting the parameters in the coating process, different shades of black can be obtained to meet the individual needs of customers. 
 Environmentally friendly and pollution-free: PVD coating technology is a pollution-free and environment-friendly surface treatment method.