Heat is an inevitable by-product of hydraulic operation. When power is converted into power by any means, some of this energy is always lost in the form of heat. You can see it everywhere. From the smartphone in your pocket to the refrigerator, the refrigerator generates by-product heat while keeping the room cool. This articleZhongyou Heavy IndustryWhat are the effects of high temperature on hydraulic oil.
Hydraulic systems also convert energy into heat during operation, and inefficiencies increase the heating of the hydraulic fluid. When the cylinder is not suitable for the application (for example, the slow jacking cylinder used in high repetition, high duty cycle applications), the efficiency may be reduced. Normal wear can also lead to increased friction and poor operation, thereby reducing efficiency. This is why well-designed and well-maintained hydraulic systems usually do not overheat. But the lower the efficiency and the worse the conditions, the more heat will be generated.
High temperature will have an adverse effect on the hydraulic system, and the hydraulic system is not designed to deal with this situation. What is the impact of high temperature on hydraulic oil brought by Zhongyou Heavy Industry in this article..
1) Higher heat equals lower oil viscosity.
You might think that hydraulic oil is oil and can withstand extreme temperatures. After all, motor oil is present in internal combustion engines and can survive for thousands of hours at high temperatures. However, not all of the reasons are true, the reason is simple. Oil viscosity varies with temperature. At high temperatures, the oil becomes thinner. This is important because the hydraulic oil is also responsible for lubrication within the hydraulic system. The oil with lower viscosity has poor lubrication performance and can no longer protect the reciprocating parts to a certain extent. Therefore, the higher the oil temperature, the greater your chance of experiencing mechanical accelerated wear. This means that you will change the pump and cylinder more frequently.
2) Increased heat leads to increased oxidation.
Oxidation is a chemical reaction that occurs when air is present in a hydraulic system. Oxidation is one of the main reasons for reducing the stability of hydraulic oil, and causes the oil to turn black and be contaminated. Chemical reactions lead to the formation of acids, which increase fluid viscosity and cause corrosion, gluing, varnishing and slow operation. The worst part is that for every 10 degrees increase in temperature, the chemical reaction doubles in speed. Therefore, the hotter the oil, the faster the oxidation rate.
3) Heat affects the service life of hydraulic oil.
Most importantly, excessive heat can have a significant impact on the service life of hydraulic oil, and poor maintenance can cause inefficiency and cause heat. This has a cascading effect on the entire system. In other words, if the components cannot be repaired when they start to become abnormally hot, it may increase the wear of other parts of the hydraulic system, and you will replace more components in the short term.
Zhongyou Heavy Hydraulic Technology Advantage]
Zhongyou Heavy Industry in strict accordance with the ISO international standard quality management system and 5S management standards for quality control and internal management. The "Henan Province Fluid Pressure Forming Intelligent Equipment Engineering Technology Research Center" has been established. The core team is composed of dozens of doctors, masters and metal forming experts and professors from various colleges and universities, focusing on the research and development of hydraulic forming core technology and product process.
Zhongyou Heavy Industry has carried out long-term production, learning, and research cooperation with the Institute of Metals of the Chinese Academy of Sciences, Nanjing University of Aeronautics and Astronautics, and jointly established a "Hydroforming Technology Industrialization Demonstration Base" to track domestic and foreign technologies and continuously improve "Zhongyou Heavy Industry" hydraulic equipment brand value.