Matters needing attention before using PVD vacuum coating equipment for vacuum coating
The use of PVD vacuum coating equipment for vacuum coating, the cleaning of the vacuum coating surface is very important, which directly affects the quality of electroplated products. Before entering the painting room, the workpiece must be carefully cleaned before electroplating. Surface pollution comes from various dust, lubricating oil, engine oil, polishing paste, grease, sweat and other substances attached to the workpiece during processing, transportation, and packaging. In order to avoid defects in the process, vacuum coating manufacturers can basically remove them by degreasing or chemical cleaning.
The cleaned surface should not be stored in the atmosphere, but should be stored in a closed container or clean cabinet to reduce dust pollution. By storing the glass substrate in a freshly oxidized aluminum container, the adsorption of hydrocarbon vapors can be minimized. Because these containers preferentially absorb hydrocarbons. The vacuum coating treatment of highly unstable surfaces that are sensitive to water vapor should be stored in a vacuum drying box.
Cleaning the dust in the spray booth, establishing a clean workshop, and keeping the room highly clean are the basic requirements of the spray painting process on the environment. In areas with high air humidity, in addition to carefully cleaning the substrate and parts in the vacuum chamber before electroplating, baking and degassing are also required. In order to prevent oil from entering the vacuum chamber, attention should be paid to the oil return of the diffusion pump, and oil blocking measures should be taken for the diffusion pump with high heating power.
PVD vacuum coating machine
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