Daily Care And Winter Maintenance Of Vacuum Coating Machines

When the vacuum coater rough pump (slide valve pump, rotary vane pump) works continuously for one month (halved in rainy season), it needs to be replaced with new oil, unscrew the oil release bolt, drain the old oil, then start the pump for a few seconds, so that the old oil in the pump is completely discharged. Screw back the oil drain bolt and add new oil to the rated quantity (observed by oil sight glass). After continuous use for more than half a year, the oil cover should be opened when changing the oil and the tank should be wiped clean of dirt with a cloth.

Diffusion pump more than 6 months of continuous use, pumping speed has become significantly slower, or improper operation, filling into the atmosphere, should be removed from the joint water pipe, remove the electric furnace plate, the first nozzle screw out, first with gasoline will pump cavity and pump gallbladder clean once, and then wash again with washing powder to water, and then thoroughly cleaned with water, after the water evaporates dry, install the pump gallbladder, add new diffusion pump oil, and put back into the body, connect the water pipe, install the electric furnace plate. Then you can turn the machine on again. Before restarting the machine, pay attention to the leak detection work: start to maintain the pump, close the door, after a few minutes, observe whether the vacuum level of the diffusion pump part reaches 6X10 Pa, otherwise the leak detection should be carried out. Check if the coupling is fitted with a sealing rubber ring or if the seal is crushed. Exclude the hidden danger of air leakage before heating, otherwise the diffusion pump oil will burn the ring and cannot enter the working state.

The vacuum coating machine should be cleaned once every 200 coating procedures or more. Use caustic soda (NaOH) saturated solution to repeatedly scrub the inner wall of the vacuum chamber (note that human skin should not be in direct contact with caustic soda solution to avoid burns), the purpose is to make the film material aluminum (AL) and NaOH react, after the reaction of the film layer off, and release hydrogen, and then clean the vacuum chamber with water and clean the dirt inside the fine extraction valve with a cloth dipped in gasoline.

As the key equipment in the coating production line, for example, glass coating is mostly a bedroom cleaning machine, which undertakes the role of polishing, cleaning, drying and other surface treatment of the original coated glass, in order to make the original film to achieve a clean level of no dirt, no dust, no ions, so that the film layer can be firmly attached to the original glass. If the entrance cleaning machine does not work properly, the coated glass produced by the coating line will produce spots, pinholes and other visual defects and physical defects such as poor adhesion of the film layer. And once the cleaning is not clean, it is not easy to find in time, will cause a lot of bad products. Therefore, the cleaning machine plays a vital role in the whole coating line.