With the deepening of industrial refinement, the role of gears in industrial manufacturing cannot be ignored. Every perfect meshing of gears cannot be separated from the role of gear oil. Although the frequency of gear oil replacement is low, and it is generally replaced every half a year, it must not be ignored. Once the gear oil goes wrong, it will cause abnormal equipment conditions! Why is gear oil so important? Today, I will give you an analysis.
The gear oil is mainly composed of petroleum lubricating oil base oil or synthetic lubricating oil and added with anti-wear agent. It is used for the transmission device between gears of equipment. It is mainly used to lubricate and prevent wear, so as to prolong the service life of gears and improve the transmission efficiency.
1. Suitable viscosity and good viscosity temperature property
The gear oil has high viscosity, which can form a thick oil film and enhance the bearing capacity of the gear. However, the viscosity should not be too high, or the oil film may be broken due to excessive internal friction. Therefore, the viscosity of the gear oil should be in a proper range. Under the high-temperature conditions caused by friction, the gear oil is required to maintain sufficient lubricating oil film, and under the low-temperature conditions, it can also maintain sufficient fluidity to avoid wear. The good viscosity and temperature property can ensure that the gear oil has sufficient lubricating oil film under the high-temperature and low-temperature conditions to prevent wear.
2. Sufficient extreme pressure wear resistance
The gear load is generally above 490mpa, which can be as high as 2942mpa. This requires that the gear oil can quickly form an oil film and maintain it for a long time under the continuous high speed and high load, so as to achieve the effect of anti-wear and anti scratch.
3. Good oxidation stability and thermal stability
When gear oil works, it is mostly in high temperature environment. High temperature will accelerate the oxidation reaction of oil, increase its viscosity, reduce the fluidity of oil, produce insoluble and corrosive substances, accelerate the deterioration of oil, affect the performance of gear oil, and even cause metal corrosion and rust.
4. Good demulsibility
Gear oil will inevitably contact with water in the production process, and the oil will be emulsified after absorbing water, which will not only damage the oil film on the metal surface and make it lose its lubrication function, but also make the additives in the oil ineffective and produce precipitates, resulting in tooth surface wear. Therefore, gear oil should have good anti emulsification property.
5. Good foam resistance
In the production process, gear oil is easy to produce foam due to stirring. If left unchecked, foam may always exist. The thermal conductivity of foam is poor, which can not reduce the temperature generated by gear friction. The overheating of the tooth surface causes the oil film to break. The presence of foam also affects the formation of new oil film. Once the oil film is not complete enough, the lubricating performance of gear oil will be lost, resulting in wear. Good anti foaming property can ensure less foam produced by gear oil and easy to dissipate.
6. Good rust and corrosion resistance
With the participation of moisture and oxygen, the tooth surface and gear box are easy to rust, which requires the gear oil to have good rust resistance. In order to improve the antirust property, sulfur salt or fatty acid salt and other antirust agents are generally added. However, the sulfur in the extreme pressure additive is easy to corrode copper, so it is necessary to add anti-corrosion additives, so that a protective film can be formed on the metal surface to prevent corrosive substances from corroding the tooth surface.
In addition, the gear oil has adhesion, shear stability and other properties, which jointly ensure that the gear oil can play its role of anti-wear and lubrication.
Selecting proper gear oil can reduce the lubrication cost of the equipment; Help the gear to dissipate heat and play a certain cooling role; Reduce friction, reduce working noise, reduce power loss and prolong gear life; Prevent metal corrosion or rusting; Improve production efficiency, etc.
Gear oil plays an important role in the whole production process, so a proper gear oil is essential. However, more attention should be paid to avoid abnormal conditions during operation.
The above is the detailed introduction of long-term gear oil. I hope it will help you. If you have any questions, please contact us. We will provide you with services with a professional attitude https://www.smxnykj.com/