How to improve the bonding force of vacuum coating machine film, common maintenance method of rotary vane vacuum pump
The vacuum coating machine rotary vane vacuum pump is the main equipment for removing the gas in the sealed container to obtain a vacuum. In the actual application process, proper maintenance is required to improve its performance and life. (It is not suitable to pump oxygen-containing, sexual, corrosive and particulate dust-containing gases). According to the survey, there are quite a few users who have problems due to improper use. In this paper, we need to pay attention to the common maintenance of the rotary vane vacuum pump of vacuum coating equipment.
1. Check the oil quality frequently and find that the vacuum pump oil should be replaced in time to ensure that the vacuum pump works normally.
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2. The time limit for changing the vacuum oil of vacuum pump vacuum pump according to the actual use conditions and whether it can meet the performance requirements, etc., at the discretion of the user. Generally, when the new vacuum pump is used to remove clean and dry gas, it is recommended to change the oil once every 100 hours. After the black metal powder is not visible in the oil, the vacuum oil replacement period can be extended in the future.
3. It is strictly forbidden to switch to other types of oil. Be sure to use professional vacuum oil. Always check the position of the oil level. If it does not meet the requirements, it must be adjusted to meet the requirements. When running with a rotary vane vacuum pump, the oil level is at the center of the oil mark.
4. Under normal circumstances, the vacuum pump should be inspected after 2000 hours of operation, check the aging degree of the rubber seal, check whether the exhaust valve piece is cracked, and clean the dirt deposited on the valve piece and the exhaust valve seat. Clean the parts of the entire vacuum pump chamber, such as rotors, rotary vanes, springs, etc. Usually cleaned with gasoline and dried. After cleaning the rubber parts, dry them with a dry cloth. Care should be taken when cleaning and assembling, and be careful of bruising.
5. Check the vacuum pump piping and joints for looseness and air leakage. Turn the vacuum pump by hand and try to see if it is flexible.
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6. Conditionally clean the pipeline to ensure that the pipeline is unblocked.
7. It is strictly forbidden to pump the atmosphere for a long time! A vacuum valve should be installed at the link between the pumping system and the vacuum pump. The channel should be closed before stopping to prevent the vacuum from flowing back into the pumping system! Ensure that the pumped system is free of corrosive gases.
8. After the revolving of the rotary vane vacuum pump, it should be tested. Generally, it must be unloaded, idling for 2 hours and changing oil twice. Since a certain amount of volatile matter remains in the rotary vane vacuum pump casing during the cleaning process, it is put into normal operation after being volatilized.
How to improve the bonding force of the vacuum coating machine layer?
How to improve the bonding force of the vacuum coating machine layer? Increase the instantaneous bombardment energy and the ionization rate of the sputtering target (up to 50% to 60%), close to the ionization rate of the arc. The vacuum coating machine can greatly increase the energy of the deposited ions by the action of the electromagnetic field, thereby improving the bonding force and compactness of the film layer.
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Improve the quality of bombardment cleaning, especially for pre-plating cleaning of non-conductors, assisting deposition during coating, increasing the energy of deposited particles, and improving the bonding strength of the film. Vacuum coating equipment thin film nano-deposition technology, vacuum coating machine film deposition is the future development direction of the coating structure, through the nano-thickness of different components deposited layer composite structure film, the coating performance is greatly enhanced. Recommended article: The process of making glass phone lenses
Vacuum coating machine film single color PVD coating can not meet the market demand, and then propose the requirements of two-color plating, which is the development direction of decorative coating, the quality of two-color plating has become the production technology level of PVD processing enterprises. Reduce the ignition of the workpiece, increase the deposition ion energy, enhance the film-based bonding force, and increase the deposition rate. The vacuum coating machine film quickly captures the residual gas in the vacuum system, especially water vapor, through the low-temperature condensation effect, greatly shortening the vacuuming time and obtaining a clean vacuum environment. The film is green and environmentally friendly, greatly reducing energy consumption, stable pumping speed of the vacuum system, stable and reliable coating process and good reproducibility.