How to choose the imported vacuum pump oil? _

speck in Germany import vacuum pumps with constant only 100 # vacuum pump oil, has a good chemical stability and thermal stability, resistance to hydrolysis, and the compatibility of sealing material is very good.

import vacuum pump oil performance requirements:

1. Under the high temperature saturated vapor pressure is lower, less volatile components.

saturated vapor pressure is vacuum pump oil is one of the key indicators. In constant temperature in the airtight container, when the gas-liquid two phase reaches the dynamic balance of pressure appellation of saturated vapor pressure. Try to low oil saturation vapor pressure and under the highest working temperature of the pump, still need to have enough low saturated vapor pressure, and lower than the limit of the rules of the vacuum pump pressure. Under the condition of 60 ℃ temperature to reach at least six. 5×10- 5  kPa( Because every rising temperature 20 ℃, saturated vapor pressure down about one order of magnitude) 。

2。 The lowest water content and water absorption.

full pressure limit: by pyrrha, meter or thermocouple gage to measure all substances (vacuum pump Gas) The sum of the pressure. Foreign countries currently focus on all the pressure test. Pressure limit points: use mercury tightening type vacuum gauge, Maxwell house) Measured the limits of air pressure pump, double stage rotary vane pump pressure should be 6 x 10 - or less 5 kPa。 Limit full pressure and the limit request partial pressure difference is not more than an order of magnitude. The greater the difference between them, the more volatile component is contained in the vacuum pump oil, the nature of the product is poor.

3。 Want to have a certain viscosity, and temperature changes little, Viscosity temperature curve smoothing) 。

with suitable viscosity vacuum pump oil demand, the rapid start at low temperature can make the vacuum water pump, vacuum pump oil at high temperature can have good sealing, within the pump vacuum pump oil has low temperature rise. Does not contain the volatile composition of light, reduce the use of vacuum pump in the process of oil return rate.

4。 Good lubrication performance, has good resistance to cracking under mechanical stress.

decrease the temperature of the friction surface is smooth and an important role. Friction surface movement, work is necessary to control friction and cost on the restraint of friction work all is converted into heat, the result will make up the friction surface temperature to rise. The size of the friction heat is associated with smooth state, viscosity of high quantity of heat, the largest viscosity low minimum quantity of heat, and border friction heat is somewhere in between. With appropriate viscosity vacuum pump oil, therefore, is not only able to complete the liquid is smooth, reduce friction heat production, but also to be able to friction hot strip out of the pump in vitro in a timely manner.

5。 Corrosion resistance, oxidation resistance, stable chemical performance.

the friction surface friction wear, fatigue wear and corrosion wear appearance, etc. , are related to the smooth condition. To do well in the vacuum pump oil is conducive to inhibit corrosion and wear; Can effectively reduce the adhesion wear and fatigue wear appearance; Fluid smooth agent on the friction surface is clean, also can reduce the friction and wear. To reduce friction in order to save energy, reduce wear and prolong mechanical life.

6, vacuum pump oil detergency

friction pair cannot avoid to contact with the surrounding medium, provoking corrosion, rust and damaged. Performance excellent vacuum pump oil request as far as possible the friction area scale clean sweep; Corrosion rust protection and maintenance of friction surface is not affected by the oil change or external corrosion.

import vacuum pump use after a period of time the oil change in time, because after a period of using, the nature of the pump oil change, such as mechanical stress under the action of cracking, oxidation, chemical reaction, water vapor may non-condensable gas into the hydrolysis of emulsification, chemicals into lead to qualitative change, dust deposition which resulted in increased viscosity, etc. , this kind of situation, oil pump has been unable to meet the requirements of the normal work of the vacuum pump, thus deterioration in vacuum, the start-up difficulties, pump temperature, increase the phenomenon such as noise, if you don't change in time, can lead to increased wear of pump parts, pump parts in corrosion, shorten the service life, serious when even lead to water pump damage. Need to change in time a new oil pump, in order to ensure the normal work of the vacuum pump, prolong the service life of pump,

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