Vacuum coating process on the environment What are the requirements?
From: VacuumFamily.COM News Centre Add Time: 2016-1-19 10:09:00
Vacuum coating process what are the requirements for the environment? In the vacuum coating processing, vacuum coating process substrate (substrate) surface cleaning is very important. Substrate into the coating chamber should be careful before cleaning treatment before plating, achieve the workpiece to the purpose of the oil, decontamination and dehydration. The vacuum coating technology on environmental requirements?
We know that the substrate surface contamination from the general parts in processing, transportation and packaging adhesive in the dust, oil, grease, oil, polishing paste, perspiration, etc; The surface oxide film in wet or humid air generated in the; The surface absorption and adsorption of gases. These contaminants are basically can be used to oil or chemical erase method to remove it.
Clean the surface of after cleaning process of vacuum coating technology, can not be stored in the atmospheric environment, with a closed container or cleaning tank storage, to minimize dust contamination. Using just the aluminum oxide container storage glass substrate, can make to minimize adsorption hydrocarbon vapors. Because the container priority adsorption hydrocarbon. For highly unstable, sensitive to water vapor of the surface, the general should be stored in a vacuum oven.
Clear coating indoor dust and equipment in the workshop cleanliness higher, maintain indoor high cleaning is the basic requirement of vacuum coating technology on the environment. Air humidity larger area, except to the substrate before plating, vacuum indoor parts cleaning, seriously also baked degassing. To prevent oil into the vacuum chamber, pay attention to the oil diffusion pump return oil, the heating power high diffusion pump oil baffle measures must be taken.
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