Due to rough machining of some gear tooth surfaces, under high local pressure, pitting corrosion may occur due to contact between the tip and end of the tooth surface. If the viscosity of industrial gear oil is too low and the load is high, it will also cause tooth surface sliding under heavy load, resulting in tooth surface adhesion; When working under heavy load, gears with better tooth surface smoothness should be selected as much as possible; When selecting industrial gear oil with high viscosity, consideration should be given to the pour point and low-temperature flowability of the oil; Gear units that are frequently started at low temperatures, especially those that are outdoors in winter, must be preheated with industrial gear oil before use, and the temperature must be strictly controlled during preheating; During the installation of gears, attention should be paid to the clearance of the gear pair, as poor meshing can also cause the tooth surface to stick together.

In the use of industrial gear oil, excessive temperature and load can cause sintering and scratching of the tooth surface. At this time, the operating temperature and load should be reduced to avoid overloading at high temperatures; Choosing a low quality grade of industrial gear oil can also cause sintering or scratching of the gear tooth surface due to insufficient oil film strength formed by the oil. Therefore, the quality grade of industrial gear oil should be high rather than low; One of the main functions of lubricating oil is to remove the heat generated during friction, but in practical use, the load on gears often causes the oil temperature to rise, which can be controlled by cooling. If the oil temperature exceeds the process operation regulations, there may be the following reasons:

• The cooling effect is not good when the temperature is high;
  
• The high viscosity of gear oil also affects heat dissipation;
  
• The gearbox casing is covered with oil or dust, which affects heat dissipation;
  
• The oil level in the gearbox is insufficient, resulting in insufficient circulation of gear oil and insufficient oil supply to wet or spray lubricate the gears.
  
  

The wear of gear tooth surfaces is caused by mechanical impurities in gear oil or poor lubrication performance of the oil. The particles in gear oil are mostly small metal particles or foreign pollutants generated by the lubricating oil system and the wear of the gear itself. The presence of these impurities greatly reduces the load-bearing capacity of the gear oil and also acts as abrasives, accelerating the wear of the gear. These mechanical impurities can be removed through filtration; In addition, before changing the oil and adding new oil, it is necessary to thoroughly clean the oil tank, oil circulation pipeline, and gear components, leaving no dead corners. In addition, oil containing water can cause extreme pressure additives in gear oil to decompose into water-soluble acidic substances. The presence of these acidic substances not only reduces the performance of industrial gear oil, but also corrodes gear equipment.

In response to this issue, the LPC-M, LPC-P5, LPC-P50, LPC-P6, LPC-L2, LPC-L3 and other series of particle counters developed and produced by Honghe can be used to detect both solid particle content and micro water content in gear oil; The tested oil can be analyzed by bottle sampling or connected to the tested system for continuous testing, with stable performance and easy operation.