For a long time, the importance of hydraulic oil filter or hydraulic oil filter has not been valued by people. People think that if there is no problem with hydraulic equipment, there is no need to check hydraulic oil. The problem is mainly in these aspects: 1. Management and maintenance technicians No attention and misunderstanding; 2. It is considered that the newly purchased hydraulic oil can be directly added to the oil tank without filtering; 3. The cleanliness of the hydraulic oil is not linked to the life of the hydraulic components and seals and the failure of the hydraulic system.
In fact, the cleanliness of hydraulic oil directly affects the normal operation of hydraulic equipment. Relevant studies have proved that 80% to 90% of the failure of the press is caused by the pollution of the hydraulic system.
Main problems: 1) When the hydraulic oil is seriously oxidized and dirty, the action of the hydraulic valve will be affected, and the valve will be stuck and the valve core will be quickly worn; 2) When the hydraulic oil is oxidized, emulsified and particle pollution occurs, the oil pump will Cavitation, corrosion of the copper parts of the oil pump, lack of lubrication of the moving parts of the oil pump, etc. may cause failures, or even burn the pump; 3) When the hydraulic oil is dirty, the life of the seals and guides will be greatly shortened;
Causes of hydraulic oil pollution:
1) Friction of moving parts, impact of high pressure oil flow;
2) Wear of seals and guides;
3) Waxy substances produced by qualitative changes such as oxidation of hydraulic oil.
The correct way to maintain the cleanliness of hydraulic oil: 1) The hydraulic system must be equipped with an independent high-precision circulating filter system and a high-precision oil return filter; 2) When changing the oil, the new oil must be filtered and added to the oil tank, and must be Pay attention to avoid secondary pollution; 3) Strictly control the oil temperature, the normal oil temperature should be controlled at 40 ~ 45 ℃; 4) Regularly check the cleanliness and oil quality of the hydraulic oil; 5) Every filter alarm is activated for two to three months in time Replace filter element.
Use a hydraulic oil filter to filter the hydraulic oil when necessary to reduce the failure of the press due to unclean hydraulic oil.
