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Influence of hydraulic oil density and temperature proportion on hydraulic system equipment

2018/5/15 Viewers:
Hydraulic oil is an excellent wear resistant hydraulic oil, specially designed to meet the requirements of various hydraulic equipment. This series of products can extend the service life of the oil / oil filter and protect the equipment most effectively, thereby reducing maintenance cost and product handling expenses. This series of products are developed jointly with the main equipment manufacturers, which can meet the strict requirements of high hydraulic and high output pumps for the precision hydraulic system, and also meet the strict requirements of other components of the hydraulic system, such as low clearance servo valves and high precision CNC machine tools. This series of products conforms to the most stringent performance requirements for various hydraulic systems and component manufacturers designed by multi metallurgical technology, and the single product has outstanding performance characteristics.

The definition of density in physics is the mass of matter contained in a unit volume. Therefore, the density of oil products in the unit volume of the quality of oil in China's petroleum product density determination method, whether measured by the density meter method or the specific gravity bottle method is the density of petroleum products. Although it is customarily known as "lateral gravity", the density is actually measured, not the specific gravity. What are the main factors that affect oil density? The main factors that affect oil density are as follows. It is related to the temperature of the cut fractions. Generally speaking, in the refining process of petroleum products, such as the temperature of the cut fraction is high, the average molecular weight of the oil product is large and its density is large. On the contrary, if the temperature of the cut fraction is low, the average molecular weight of the oil product is small, and the density of the oil product is also small.

It is related to the chemical composition of oil. The density of oil is related to the amount of hydrocarbons contained. The density of hydrocarbons is the smallest, followed by Naphthenic hydrocarbons and aromatic hydrocarbons. The density of non hydrocarbon compounds is also large, so the greater the content of aromatic hydrocarbons or non hydrocarbon compounds in oil products, the greater the density of oil products. When the oil is aging in operation, the resin and asphaltene produced will also affect the density of the oil.

It is related to the temperature of the environment. As we all know, the density of oil products is greatly affected by temperature. When the temperature rises, the volume of oil increases and the density decreases. Conversely, when the temperature decreases, the volume decreases and the density increases. Therefore, when measuring oil density, the temperature must be indicated.

Therefore, the density and proportion of hydraulic oil are important to the equipment. If the chemical components in the waste hydraulic oil have changed, the additives, antioxidants and antiwear agents are reduced. At the same time, under high temperature and high pressure, impurities, colloids and black carbides are produced. It is necessary to use hydraulic oil filter to remove impurities and carbides from the oil by physical heating and filtration.