Views: 2 Author: Site Editor Publish Time: 2020-08-24 Origin: Site
Lubrication is a technology that uses lubricating substances to reduce the friction and wear of the friction pair. At present, about 80% of equipment damage is caused by friction and wear. Of course, the wear can be slowed down by rationally selecting materials and design, and rational use of lubrication is currently the most effective and economical measure to reduce the wear of the reducer.
Lubrication is the use of a substance to form an elastic film on the contact surface to separate the surfaces that move relative to each other. This material has low traction coefficient, low shear resistance, low wear, good heat dissipation, and can run for a long time. Other equipments are lubricated with lubricating oil. The main function of lubricating oil is to reduce the wear of the contact surface, reduce the friction resistance, and maximize the service life of the mechanical relative moving parts. In addition, lubricating oil also has the functions of sealing, cooling, sealing, rust prevention, shock absorption, unloading, cooling, washing, and insulation.
Lubricants are generally divided into mineral oil and synthetic oil. Base oil: Mineral oil is refined from petroleum, processed by vacuum distillation, solvent refining, dewaxing and hydrogenation processes to form mineral oil. Mineral oil has different viscosity index, flash point, pour point and oxidation stability according to the degree of hydrogenation process. Performance. API therefore divides mineral base oils into: Class I, Class II, and Class III. At the microscopic level, the C molecular chain lengths of the three mineral base oils are different, and their performances are different. Class III base oils have been greatly improved in many aspects, but in terms of viscosity index, high temperature stability, oxidation stability, pour point, and anti-wear Characteristics and other aspects are still different from synthetic base oils.
Synthetic lubricating oil refers to a high-performance lubricating oil that is blended by chemically synthesized base oils of organic substances (such as ethylene, ether, etc.) and corresponding additives. The overall performance is far superior to ordinary mineral oils, and can be used in more demanding conditions. Work under different conditions. API synthetic base oils are divided into: IV and V. Synthetic oils generally include polyether PAG, poly-α-olefin PAO, silicone oil, phosphate ester, polyethylene glycol, and fluorinated oil. Common synthetic oils are usually poly-α-olefin. Olefin PAO, polyether PAG.