The purpose of lubrication management is to prevent equipment lubrication failures, reduce equipment overheating losses, save maintenance costs and reduce parts replacement, extend equipment life, reduce lubricant consumption, and save the cost of purchasing lubricating materials. Modern mechanical equipment is developing in the direction of high precision, high efficiency, high speed, heavy load, small size, maintenance-free, and energy saving, which puts forward higher requirements on the friction parts of mechanical equipment.
1. The machine is not working well
When the equipment is running, the motion is lagging, the speed is uneven, and the power consumption is large. It will inevitably produce vibration and noise. Sometimes the motor will overheat and fail to reach the design parameters. If the motor power is increased at this time, the machine will overheat. Transmission components, such as bearings, belts, gears, etc., will be severely damaged.
main reason:
① Improper installation of the friction mechanism or design defects, such as the sliding bearing gap is too small, and increase the friction, or vice versa, the gap is too large, resulting in impact and poor lubrication, resulting in increased friction and unstable movement, the friction part Parts, gaps that are too large, too small, or insufficient supply of lubricating oil will cause poor lubrication of parts and worsen running conditions. Some of the above conditions are improper design, and some are caused by poor processing or assembly.
② When the material or combination of the moving parts is improper, and the lubricating oil is not selected properly, it will also cause unstable movement and easily cause seizure and bonding damage.
③ Foreign matter has entered. When abrasive solids such as dust, sand, etc. invade, they are likely to be embedded in the friction pair and hinder the movement. Often, particles such as dust and sand are 0.2-0.8mm or more and have extremely high hardness. They not only hinder the operation but also cause significant friction.
④ Wear, seizure, peeling and other damages of its own mechanical equipment parts will deteriorate the motion state and make it difficult for lubrication to work.
2 Vibration and noise
When the mechanical equipment is in operation, due to various reasons, abnormal vibration and noise will be generated, which will reduce the performance of the machinery and make the environment not up to the standard. The reason has a lot to do with lubrication.
3 The temperature is too high
The resistance of the friction pair increases, and the temperature rises rapidly, without the influence of heat sources, such as bearings, gearboxes, etc. When the external temperature exceeds 80°C, attention should be paid to it. Their internal temperature is tens of degrees higher than the external temperature and even burnt.
main reason:
① The frictional resistance is too large, and it is forced to run and generate intense heat. For example, the sealing device of the water pump packing will cause severe resistance and heat when the pressure is too tight.
②The viscosity of the lubricating oil is too large and the amount of oil filled is too much, which will cause excessive stirring during operation, resulting in heat generation, but also due to the high viscosity of the lubricating oil, poor fluidity, and poor heat dissipation.
③ Poor heat dissipation conditions, high ambient temperature, poor ventilation, and heat cannot be dissipated in time.
④Due to running heat, improper gap adjustment, deformation of parts and thermal expansion, it will also accelerate the heat of the parts.
Causes of damage to equipment lubrication parts and solutions
When machinery fails, especially lubrication failures, obvious abnormal phenomena often occur. However, there are many subtle phenomena that are not easy to detect. Their existence can easily cause major failures and must be paid attention to.
This requires that when the equipment is in normal operation, the corresponding operators should make various records in time, including data such as noise, vibration, temperature, power consumption, etc., and frequently check the operating status of the mechanical equipment, which helps to find minor faults and solve problems in time , Avoid major losses.
