Importance of cleaning work during vacuum electroplating
The cleaning of vacuum electroplating surfaces is very important and directly affects the quality of electroplated products. Before the workpiece enters the coating room, it must be carefully cleaned before plating. Surface contamination comes from various dust, lubricating oil, engine oil, polishing paste, grease, sweat stains, etc. adhered to the workpiece during processing, transportation, and packaging. In order to avoid defects caused during processing, vacuum plating manufacturers can basically use degreasing or chemical cleaning methods to remove them. Clean surfaces that have been cleaned cannot be stored in the atmosphere. They must be stored in closed containers or cleaning cabinets to reduce dust contamination. Storing glass substrates in freshly oxidized aluminum containers can minimize the adsorption of hydrocarbon vapor. Because these containers preferentially adsorb hydrocarbons. For highly unstable and water vapor-sensitive surfaces, vacuum coating processing should generally be stored in a vacuum drying oven.
Vacuum coating processing removes dust in the coating room, sets up a high-cleanliness workshop, and keeps the room highly clean. These are the basic requirements of the coating process for the environment. In areas with high air humidity, in addition to carefully cleaning the substrate and the components in the vacuum chamber before plating, baking and degassing are also required. To prevent oil from entering the vacuum chamber, pay attention to the oil return of the oil diffusion pump, and take oil blocking measures for the diffusion pump with high heating power.