Hydraulic oil is an essential part of the hydraulic system, and the quality of hydraulic oil directly affects the normal operation of the hydraulic system. Therefore, hydraulic oil must be kept dry and free from moisture damage during use. So, why is hydraulic oil afraid of water? Composition and properties of hydraulic oil

Hydraulic oil is mainly composed of base oil, additives, and other additives. The composition of base oil is usually mineral oil, synthetic oil, or bio base oil. The type and content of additives may vary depending on the requirements of different hydraulic systems. Common additives include antioxidants, corrosion inhibitors, anti foaming agents, and cleaning agents. These additives can improve the performance of hydraulic oil, enhance its antioxidant, anti foam, anti rust, cleaning and other capabilities.

Why hydraulic oil is afraid of water

1. Water can cause oxidation

Water will accelerate the oxidation of hydraulic oil, causing it to lose its properties and produce acidic substances. These substances can damage the metal surface of the hydraulic system and contaminate the hydraulic oil. For hydraulic oil containing additives, the mixing of water will reduce the effectiveness of the additives, thereby affecting the normal operation of the hydraulic system.

2. Water can cause the formation of bubbles and oxygen

During the operation of the hydraulic system, the water in the hydraulic oil will evaporate and produce bubbles. And these bubbles will form "air pockets" in the hydraulic system, preventing the normal flow of hydraulic oil, which will cause the hydraulic system to fail. In addition, moisture can also affect the oxygen content in hydraulic oil, thereby affecting the stability of the hydraulic system.

3. The evaporation of water will produce a large amount of sediment

The moisture in hydraulic oil will evaporate when heated, and a large amount of sediment will be generated during the evaporation process. These deposits will deposit on the pipeline walls of the hydraulic system, leading to blockage and failure of the hydraulic system.

Method for keeping hydraulic oil dry

In order to ensure the quality of hydraulic oil and the normal operation of the hydraulic system, it is necessary to keep the hydraulic oil dry and clean. In practical applications, there are several methods that can be implemented:

1. Use hydraulic oil with good water resistance.

2. Use waterproof filter to filter water in hydraulic system.

3. Pay attention to the sealing of hydraulic oil and avoid contact between hydraulic oil and air.

4. Regularly replace the hydraulic oil and regularly check the drainage port and sediment.

5. Regularly maintain the hydraulic system, clean pipelines regularly, and inject new hydraulic oil.

In short, hydraulic oil must be kept dry and free from moisture damage during use. Due to the high precision and susceptibility to contamination of hydraulic systems, a series of measures must be taken to ensure the quality of hydraulic oil and the normal operation of the system.