With the right hydraulic fluid, you can get hot at minus 20 degrees

December 31, 2023

With the right hydraulic fluid, you can get hot at minus 20 degrees

Recently, the National Meteorological Center once again issued a yellow cold wave warning, many parts of the country will usher in more severe cold weather. Excavators, rollers, loaders, bulldozers, cranes.... All construction machinery with hydraulic system will face winter operation problems. Why is the equipment not obedient in winter? How to fix it?

In China's northeast, Inner Mongolia, Xinjiang and other regions, winter temperatures often reach -30 ° C ~-20 ° C, at this time many machines will be difficult to start, preheating time is long, this time we must consider whether the hydraulic oil is not selected.

Low temperature will make the viscosity of the hydraulic oil becomes larger, after the viscosity increases, the self-priming difficulty of the hydraulic pump is greatly improved, the pressure loss of the hydraulic system increases, and the power loss increases, which will not only affect the work efficiency and operation stability of the construction machinery, but also increase the fuel loss for some equipment.

When the viscosity of the hydraulic oil increases to exceed the starting viscosity specified by the equipment, the hydraulic pump cannot extract the hydraulic oil, which will cause the hydraulic system to fail to operate and the hydraulic equipment to stop working.

So is it possible to directly change the hydraulic oil with small viscosity? Of course not.

Although the hydraulic oil with low viscosity is conducive to the start-up of the equipment, it cannot ensure sufficient oil film strength after the smooth operation of the equipment.

After the operation of the equipment, the oil temperature rises, which will cause the oil film thickness to decrease, which is not conducive to the anti-wear protection of the equipment. After the dry friction of the equipment, the oil temperature will continue to rise, and the hydraulic oil will accelerate the aging, forming a vicious circle. In addition, oil with too low viscosity and strong fluidity will also increase the possibility of leakage.

So what kind of hydraulic oil can not only meet the smooth start of low temperature, but also meet the long-term stable operation?

High pressure anti-wear hydraulic oil for low temperature long life construction machinery should be used. This product has a high viscosity index, which can ensure good flow of hydraulic oil at low temperature and sufficient oil film strength at high temperature. It can be used in a wide temperature range, and is especially suitable for use in extreme temperature conditions, such as high-pressure hydraulic systems for open air, cold areas and large ambient temperature changes or harsh working conditions.

In addition, the pour point of hydraulic oil should be considered when selecting hydraulic oil. The lower the pour point, the better the low temperature flow of hydraulic oil, and the smoother the operation of mechanical equipment in a low temperature environment.

Author:

Mr. James

E-mail:

sales@cn-lubricantadditive.com

Phone/WhatsApp:

+86 13783582233