Germany Leybold vacuum pump oil how to choose

Overview: Germany Leybold vacuum pump oil is a vacuum pump specially developed for vacuum equipment and special lubricants, mineral oil and synthetic oil into two. Germany Leybold vacuum pump oil Features: l has excellent oxidation stability, long-term high temperature conditions and air, resin, chemical raw materials, such as direct contact is not easy to degenerate, reducing the formation of harmful paint and grease, to provide a longer change Oil cycle. l Germany Leybold vacuum pump oil has excellent rust and corrosion resistance, can form a very effective anti-corrosion film on the metal surface, which can be fully prevented due to inhalation of corrosive gases and moisture caused by system corrosion. l Germany Leybold vacuum pump oil can quickly separate the entrained water to reach the desired degree of vacuum. l Germany Leybold vacuum pump oil vapor pressure at the end to prevent the oil from the pump cavity back to the vacuum system proliferation caused by back to the oil. Thus ensuring a sufficient limit of vacuum. Scope of application: German Leybold vacuum pump oil for reciprocating booster pumps, mechanical booster pumps and oil seal mechanical vacuum pumps, etc. can also be used for various diffusion pumps. Recommended for handicrafts, ceramics, chemicals and other areas of the vacuum pump use. Germany Leybold vacuum pump oil physical and chemical index: 1. Kinematic viscosity by iso base 40cmm2 / s center value can be divided into vg46, vg68, vgl00, vg22, vg32, vgl50, vg220 a total of seven brands. Each pump oil grade is based on the type of pump, speed, pumping speed, sports clearance, extreme pressure and limit the total pressure conditions. Vacuum pump type Kinematic viscosity 40 ℃ Vacuum oil level Piston type (w) Rotary type (2x) Direct-coupled high-speed rotary type (2xz type) Sliding valve (h type) Trochoidal type (yz, yzr type) Roots Pressure pump), (zj, zjp type) vgl00, 1so vg32,46,68 vg22,32,46,68 vg68,100,150,220 vgloo, 150,220 vg22,32,46 dva (1 # vacuum pump oil) dvc dvc , Dve dvc dvc, dve dvc, dve 2. Viscosity Index Usually people experience that "sticky" the more "sticky" the better the degree of vacuum. In fact, not the case, "thin" and "sticky" is relatively visual and feel it, and no quantitative data. As measured at 40 ℃, only two oil viscosity values ​​?? the same words, when the oil cooled to room temperature, which "thinner" than "sticky" oil is good. Because "thin" oil viscosity index than "sticky" high. Viscous oil with temperature changes and viscosity change is also large, that is, low viscosity index, viscosity index is Germany Leybold vacuum pump significant index. Viscosity index high pump oil viscosity and temperature change between less. And the cold pump is easy to run, with significant savings in cost, especially in the summer, as the ambient temperature and pump oil temperature rise, the oil ultimate pressure to maintain good results. 3. Germany Leybold vacuum pump oil flash point: Flash Point Germany Leybold vacuum pump oil is more important one of the quality index. It is not only from the flammable safety performance considerations. But high flash point oil content is often less light components. Therefore, when the oil temperature rises, the light boiling oil molecules are not volatile, can effectively maintain the ultimate pressure. 4. Germany Leybold vacuum pump oil anti-emulsification degree: During the operation of the vacuum pump, the system of water and cold gas will be discharged into the pump oil, oil and water will form an emulsion, not only affect the life of pump oil also makes the ultimate pressure worse. Especially for pharmaceutical, food, ceramics and other industrial applications in the vacuum drying process, the anti-emulsification performance of pump oil is more important. Good anti-emulsification Pump oil-water separation ability, water vapor and condensate gas through the town gas valve, part of the water vapor will be discharged. In addition, low viscosity pump oil anti-emulsifying capacity is better than high viscosity oil. Additive pump oil pump oil effect is more obvious than without. 5. Germany Leybold vacuum pump oil anti-foam: the operation of the vacuum system gas will be sealed by the German Leybold vacuum pump continuously discharged, the exhaust gas will produce a large number of bubbles in the surface of the reservoir, and overflow from the pump exhaust hole, resulting in loss of oil and Equipment pollution. Anti-foam anti-foam pump oil, anti-foam effect has significantly improved. 6. Germany Leybold vacuum pump oil oxidation stability: natural mineral oil has its inevitable loopholes, thermal oxidation resistance than synthetic oil, pump oil composition with thermal oxidation, decomposition is easy to deteriorate, the ultimate pressure stability is poor, the pumping speed is also With the use of time down. However, the additive oxidation stability significantly improved compared with pure mineral oil, common pure mineral oil oxidation test method d943 for a few hundred hours, while d943 can be added to the additive on the 1500 hours. Shows that the service life has been increased. 7. Germany Leybold vacuum pump oil saturation vapor pressure: saturated vapor pressure is one of the key index of vacuum pump oil. In a thermostatic closed vessel, when the vapor-liquid two-phase reaches a dynamic equilibrium, the vapor phase has the pressure to indicate the saturated vapor pressure. In the 80c temperature environment to reach at least 6.5 × 10 a zpa (due to the temperature rise of 20 ℃, full steam with about an order of magnitude down). 8. Extreme pressure and extreme pressure limit Extreme pressure: all the substances (gas) generated by the Pirani meter or thermocouple vacuum gauge to produce the total pressure. It is understood that foreign emphasis on full pressure test using the index. Good pump oil can be measured (1.5 × 10.kpa). Limit partial pressure: Mercury compression vacuum gauge (Wheat's meter) measured the pump limit air partial pressure, two-stage rotary vane pump partial pressure should be ≤ 6 × 10-5kpa. Limit pressure and limit pressure difference conditions are not greater than an order of magnitude. The greater the difference between the two, the German Leybold vacuum pump contains more volatile components, the worse the nature of the oil. (Note: Regardless of the determination of saturated vapor pressure, the limit of the total pressure, limit the use of two-stage pressure-level super-vacuum pump as a test pump.) Disclaimer: "Germany Leybold Vacuum Pump Selection of reading," Ben Wang editor reprint, reproduced The purpose is to pass more information does not mean Ben Wang agree with their views and be responsible for its authenticity. If involved in the content, copyright and other issues, please contact with Ben Wang within 30 days, we will delete the content in the first time!