Shandong Weirun Industrial Manufacturing Co., Ltd. hints at problems encountered in the operation of hydraulic cylinders
1. Hydraulic oil oxidative deterioration
When the construction machinery is working, the hydraulic system generates a large amount of heat due to various pressure losses, so that the temperature of the system hydraulic oil rises. When the system temperature is too high, the hydraulic oil is easily oxidized, and an organic acid is formed after oxidation, and the organic acid will corrode the metal components. A gel-like precipitate that is insoluble in oil is formed, so that the viscosity of the hydraulic oil is increased, and the abrasion resistance is deteriorated.
2. Mixing water and air into the hydraulic oil
The new hydraulic oil has water absorption and contains a trace amount of water; when the hydraulic system stops working, the system temperature decreases, and the moisture in the air condenses into water molecules mixed into the oil. When the hydraulic oil is mixed with water, the viscosity of the hydraulic oil is lowered, and the hydraulic oil is oxidized and deteriorated, and water bubbles are formed, so that the lubricating performance of the hydraulic oil is deteriorated and cavitation is generated.
Hydraulic oil dissolves some of the air and sometimes sucks in air bubbles. Air mixed into the hydraulic oil can accelerate the oxidation and deterioration of the hydraulic oil, and also cause noise, cavitation, vibration and the like.
3, mixed with particulate dirt in hydraulic oil
Hydraulic systems and components are mixed into the system during processing, assembly, storage and transportation; insoluble materials are formed after leaking or leaking during use; wear debris generated after wear of metal parts in use; mixing of dust in the air, etc. Forming particulate contaminants in the hydraulic fluid. The hydraulic oil is mixed with particulate dirt, which easily forms abrasive wear, reduces the lubricating performance of the hydraulic oil, and cools the performance. There are several reasons for solid particle contamination:
(1) The residual impurities in the hydraulic system itself, such as those produced during the manufacturing process, have not been completely removed;
(2) The new oil contains impurities because the oil pipe through which the oil flows and the oil drum in which the oil is stored contain impurities;
(3) The open air working environment in the field is harsh, and various flying material particles are immersed in the hydraulic system;
(4) Intrusion of pollutants during the process of disassembling components and pipelines during maintenance of the hydraulic system, or the use of unclean filter containers to bring in pollutants when refueling or changing oil;
(5) Contamination from mechanical friction, deformation and chemical reactions.
1. Hydraulic oil oxidative deterioration
When the construction machinery is working, the hydraulic system generates a large amount of heat due to various pressure losses, so that the temperature of the system hydraulic oil rises. When the system temperature is too high, the hydraulic oil is easily oxidized, and an organic acid is formed after oxidation, and the organic acid will corrode the metal components. A gel-like precipitate that is insoluble in oil is formed, so that the viscosity of the hydraulic oil is increased, and the abrasion resistance is deteriorated.
2. Mixing water and air into the hydraulic oil
The new hydraulic oil has water absorption and contains a trace amount of water; when the hydraulic system stops working, the system temperature decreases, and the moisture in the air condenses into water molecules mixed into the oil. When the hydraulic oil is mixed with water, the viscosity of the hydraulic oil is lowered, and the hydraulic oil is oxidized and deteriorated, and water bubbles are formed, so that the lubricating performance of the hydraulic oil is deteriorated and cavitation is generated.
Hydraulic oil dissolves some of the air and sometimes sucks in air bubbles. Air mixed into the hydraulic oil can accelerate the oxidation and deterioration of the hydraulic oil, and also cause noise, cavitation, vibration and the like.
3, mixed with particulate dirt in hydraulic oil
Hydraulic systems and components are mixed into the system during processing, assembly, storage and transportation; insoluble materials are formed after leaking or leaking during use; wear debris generated after wear of metal parts in use; mixing of dust in the air, etc. Forming particulate contaminants in the hydraulic fluid. The hydraulic oil is mixed with particulate dirt, which easily forms abrasive wear, reduces the lubricating performance of the hydraulic oil, and cools the performance. There are several reasons for solid particle contamination:
(1) The residual impurities in the hydraulic system itself, such as those produced during the manufacturing process, have not been completely removed;
(2) The new oil contains impurities because the oil pipe through which the oil flows and the oil drum in which the oil is stored contain impurities;
(3) The open air working environment in the field is harsh, and various flying material particles are immersed in the hydraulic system;
(4) Intrusion of pollutants during the process of disassembling components and pipelines during maintenance of the hydraulic system, or the use of unclean filter containers to bring in pollutants when refueling or changing oil;
(5) Contamination from mechanical friction, deformation and chemical reactions.