Release Date : 2022/2/15 16:18:51 Clicks : 2022
The cleaning of the surface of vacuum coating processing is very important, which directly affects the quality of electroplating products. Before the workpiece enters the coating chamber, it must be carefully cleaned before plating. The surface contamination comes from various dusts, lubricating oil, engine oil, polishing paste, grease, sweat and other objects that adhere to the workpiece during processing, transmission and packaging. In order to avoid the defects caused during the processing, vacuum plating manufacturers can basically use degreasing or chemical cleaning methods to remove them.
The cleaned surfaces that have been cleaned should not be stored in the atmospheric environment, but should be stored in closed containers or cleaning cabinets to reduce dust contamination. Storage of glass substrates in freshly oxidized aluminum containers minimizes the adsorption of hydrocarbon vapors. Because these vessels preferentially adsorb hydrocarbons. For highly unstable, water-vapor-sensitive surfaces, vacuum coating processes should generally be stored in a vacuum oven.
Vacuum coating process removes the dust in the coating room, sets up a work room with high cleanliness, and maintains a high degree of indoor cleanliness is the basic requirement of the coating process for the environment. In areas with high air humidity, in addition to carefully cleaning the substrate and various components in the vacuum chamber before plating, baking and degassing should also be performed. To prevent the oil from being brought into the vacuum chamber, pay attention to the oil return of the oil diffusion pump. For the diffusion pump with high heating power, oil blocking measures must be taken.
The vacuum coater is dust-proof, and the source material used in the equipment must meet the necessary purity requirements. After taking out the equipment samples, pay attention to the cleanliness of the storage environment. After a period of vacuum coating, the inner wall of the vacuum chamber must be cleaned. Vacuum coating to clean the substrate material must be strictly in line with the process requirements. Vacuum coating appropriately increases the humidity of the environment, which is beneficial to reduce the suspended solid particles in the surrounding environment. Staff need to wear gloves, foot covers, etc., and special clothing when operating.
Since dust will have a greater impact on the coating effect, in order to avoid leaving dust in the vacuum coating equipment, you should pay attention to the above points in use to avoid it as much as possible. In addition, you should also pay attention to frequent cleaning to avoid the accumulation of dust. .
