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Industrial lubricant manufacturers need to master the 10 major knowledge points

Category: Common problems    Release time: 2020-12-01    Author: Lanzhou Liulian Kunrun Petrochemical Co., LTD
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    在Industrial lubricating oilPeople who have worked in the factory for many years understand the importance of doing a good job of lubricating oil cleaning and environmental pollution manipulation。Gases can also cause environmental pollution to lubricants, which not only do not contain moisture content, magazines, and other oil liquids, but also avoid carrying gas, whether it is the foam on the surface of the oil or the bubbles contained within the oil。The reason for the infiltration of gas in the lubricating oil is very complicated, and sometimes it is not the problem of the oil itself, so the oil change can not be dealt with。Bubbles and foams are harmful to lubricating oil and equipment. Bubbles will speed up the air oxidation and mildew rate of lubricating oil, speed up the consumption of preservatives, harm heat removal, can not produce detailed lubricating oil film, and cause wear to machinery and equipment。The bubble in the high pressure system software will continue to cause some high temperatures, making the oil quickly mildew。In addition, the gas is easy to shrink, there is steam in the lubricating oil, the thin and thick oil film will become soft and even the oil film will crack, and the middle of the mechanical parts will immediately friction, leading to wear out。The bubble cracks under the effect of working pressure, and the metal surface will continue to produce cavitation damage。In addition, the bubble will continue to cause instability in the operation of machinery and equipment。

Industrial lubricating oil

    In view of the bubble problem in lubricating oil, this situation should be mastered by industrial lubricant manufacturers:
    1.Mechanical equipment structure caused by oil flow obstruction will also cause bubble problems, such as pipeline turn, oil circuit obstruction caused by oil flow restrictions, will release the oil in the melting gas to produce bubble, this situation will also cause mechanical equipment cavitation and oil part of the high temperature。
    2.Pure oil itself is not easy to create foam, if you add other items will cause foam, such as external residue, there are also added preservatives。Lubricating oil should be prepared with basic oil and preservative,Base oil is the oil before the addition of preservatives,The oil is pure at this time,Not easy to create foam plastic,But in order to improve the characteristics of the oil,You need to add some preservatives,Such as anti-wear agent, anti-fire hydraulic oil agent, quiet thickening agent these,The more active preservatives you use,The easier it is to make foam,For example, anti-wear agents and anti-fire hydraulic oils are classified as optically active preservatives。
    3.The addition of water to the lubricating oil will reduce the surface tension of the oil, making the lubricating oil more prone to foam, for most oils, if there is a moisture content of 1000ppm, the oil will continue to form foam。
    4.The higher the viscosity of the lubricant, the smaller the bubbles in the oil, the slower the rate at which the bubbles are released, which will lead to more bubbles in the oil。If the bubble volume *2, then the time of the bubble release will be reduced to 1/4, which is very well understood, the larger the bubble volume, the easier it is to float the oil surface。
    5.The volume of the bubble is inversely proportional to the viscosity of the lubricating oil, low viscosity oil is very easy to form a large bubble, and high viscosity oil is very easy to cause bubbles。The larger the bubble, the easier it is to crack, and the relative nature of the bubble is relatively "strong and unyielding", not easy to crack, so it is relatively stable after formation, and it takes a long time to fade。
    6.At ultra-low temperature, low viscosity lubricating oil (ISOVG10~32 oil) is very easy to form steam bubbles。If it is under the operating temperature standard of the machine and equipment (30 ° C ~60 ° C), the situation is exactly the reverse, and the high-viscosity oil (ISOVG460~1000 oil) is very easy to form a bubble。
    7.Deep, narrow fuel tanks are more likely to cause foam problems, and wide, short fuel tanks are relatively difficult to cause foam problems。This is very well understood, the tank is deep, narrow unfavorable bubble release, in addition, the tank is narrow, the oil return area and the oil absorption area spacing is short, the oil out of the return pipe is not able to catch up with the release of the bubble is pumped away, causing the bubble to stay in the system software。
    8.When the gas infiltration in the lubricating oil is above 30%, it is generally thought that there is a foam problem, for manyIndustrial lubricant manufacturersWhen the volume of the penetrated gas is 10%, the viscosity of the oil will be increased by about 15%, so the information effect of the bubble on the lubrication is very significant。
    9.When the bubble passes through the high-pressure area in the whole process accompanied by the flow of the oil, it will be rapidly warmed by shrinking, and the temperature will reach several hundred degrees Celsius, resulting in high temperature of the oil and therefore mildew。
    10.The size of the bubble in the oil is related to the surface tension of the oil, and the supporting force is small, the resulting bubble is small。The smaller the bubble, the easier it is for the oil to produce more and smooth foam, which is not easy to crack and disappear。
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