زيت لتصنيع جهاز تفريغ كهربائي

Oil to manufacture electric vacuum device (1) the influence of the technological process of the vacuum electronic devices, in order to improve the weldability between the metal parts corrosion and tube parts, part of tube parts need the plating processing, electroplating process, the oil on the surface of the parts must be clean, otherwise it can have influence on the coating, can make its sparkling hair flower, etc (2) In the use of brazing furnace vacuum furnace hydrogen furnace drying furnace, it is required that the surface of parts and components are clean without oil pollution. If there is oil pollution on the surface of parts and components, the environment in the furnace will be polluted and the vacuum degree will be reduced Parts surface is oil adsorption gas, in after completion of the whole pipe, vacuum storage device placed over time, the oil adsorption gas will release slowly, make the whole tube vacuum decline Ultra high vacuum system, the disposal of the materials on the surface of clean, can make its deflated rate lower orders of magnitude stainless steel exposed in the air, the gas rate is 2.7 10-1Pa·L/(s·m2), and after oil removal after pumping 4 h, can be reduced to 1.310-3 Pa·L/(s·m2), after cleaning, baking at 250 for 15 h, the gas rate is reduced to 1.310-6 Pa·L/(s·m2) (3) electric vacuum solder has good vacuum tightness Strong heat resistance to impact The sealing strength is high Vacuum electronic devices (brazing welding different kinds of metal and alloy parts, and even can connect metal and ceramics, tiny parts connected into a large and complex parts, at the same time can guarantee the quality of parts of the finish and precise size solder directly affects the quality of weld and internal for vacuum electronic devices After welding, leakage is detected by helium mass spectrometer. The leakage rate is required to be below 5 10-9 Pa·m3/s. We believe that if the solder surface used by the electric vacuum device is not clean Have oil, make the wettability on the surface of the welding material and diaspora is bad, after the solder melts, in the scum of the weld surface will form a black or dark spots, cause porosity, destruction of seam gas tightness, leakage phenomenon, influence on the performance of the vacuum electronic devices (vacuum, vacuum electronic devices (cause of chronic gas leak, result in device failure eventually scrapped (4) By loading the resonant cavity to reduce its quality factor, coating the wall and bottom of the resonant cavity with microwave attenuation material is an effective prevention of reducing the quality factor of iron silicon aluminum film microwave attenuation material is a high performance microwave attenuation material, which can be prepared on the wall of the oxygen-free copper resonant cavity by coating and sintering method, to form attenuation coating Before coating, the oxygen-free copper substrate should be wool treated, and the surface of the resonant cavity should be coated with attenuation material according to the coating specification, and the coated workpiece is sintered at high temperature in a wet hydrogen atmosphere The anaerobic copper substrate needs to ensure that the surface is free of oil stains before it can be roughed, and after treatment, it also needs to be treated again to remove oil stains before it can be coated with attenuation materials on the surface of the anaerobic copper substrate Oil can make the attenuation material and the substrate, if parts surface oil pollution, cause attenuation material on a substrate surface coating, attenuation material loss may occur after sintering, is more serious is that possible for vacuum electronic devices in use after a period of time, the attenuation on the oxygen-free copper material loss, at this time will cause a greater loss.

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