Introduction to the cause of corrosion of IKO oil-free bearings and methods for preventing corrosion

Oil-free bearings use water-soluble cutting fluids, and users must work harder on machine maintenance and management to control erosion and even eliminate erosion. In order to prevent water from eroding the metal surface, the machine tool should always be fully lubricated and greased on important parts of the machine tool.

Oil-free bearings can have a long life under accurate use. If the damage is too early, it may be caused by improper selection, improper use or poor lubrication.

Therefore, when installing IKO bearings, we need to record the type of machine, the installation location, the premise of use and the nearby cooperation. Through research to summarize the type of bearing damage, the use environment when the problem occurs, to avoid similar situations happen again.

Correctly control the concentration of the cutting fluid. When the machine is shut down, use the cutting fluid to clean the surface of the machine, and open the machine cover to dissipate the humid air in the working area of ​​the machine. To prevent the occurrence of electrical corrosion, a layer of waterproof grease should be applied to the metal surface. Moreover, the machine tool should be grounded strictly. It is not enough to ground the electrical cabinet only. To avoid the breeding and breeding of bacteria, the cutting fluid should be cleaned or replaced on time, the chips should be removed in time, and soft water (pure water with low mineral content) should be used. Diluted the cutting concentrate.

In addition to excellent quality, oil-free bearings are also very precise parts. They are high-performance bearings. If they are used improperly during use, they will not achieve the expected functional effects, and it will easily damage IKO bearings. I have definitely paid attention to it.

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Judging the fault maintenance method of IKO high temperature bearing in use

High temperature bearings exhibit strong regularity during their use and are very repeatable. Normal high-quality bearings are relatively small in vibration and noise at the beginning of use, but the spectrum is somewhat scattered and the amplitude is small, which may be due to some defects in the manufacturing process, such as surface burrs.

After a period of motion, the vibration and noise are maintained at a certain level, and the spectrum is very single, only one or two times the frequency. There are very few spectrums above the power frequency, and the IKO bearing state is very stable and enters a stable working period.

After continuing to run, the bearing vibration and noise begin to increase, and sometimes abnormal sounds occur, but the vibration increase changes slowly. At this time, the bearing kurtness value suddenly reaches a certain value. We believe that the bearing is an initial failure at this time.

At this time, it is required to closely monitor the high temperature bearing and pay close attention to the change. After that, the bearing kurtosis value begins to drop rapidly and approaches the normal value, while the vibration and noise begin to increase significantly, and the increase rate begins to accelerate. When the vibration exceeds the vibration standard (such as ISO2372 standard), the bearing kurtosis value also begins. Rapid increase, when both the vibration standard and the kurtosis value exceed the normal value (the available kurtosis relative standard), we believe that the IKO bearing has entered the late fault production, and it is necessary to repair the equipment and replace the bearing in time.

Swedish high-temperature bearings show late failure characteristics to serious failures (generally bearing damage such as axles, burns, sand cracks, raceways, bead wear, etc.) are not more than one week, the larger the equipment capacity, the faster the speed The shorter the interval. Therefore, in the actual IKO bearing fault diagnosis, once the late fault characteristics are found, the bearing should be judged decisively and the repair should be arranged as soon as possible.

The use factors mainly refer to whether the installation adjustment, use and maintenance, maintenance and repair, etc. meet the technical requirements. According to the technical requirements of bearing installation, use, maintenance and maintenance, monitor and check the load, speed, working temperature, vibration, noise and lubrication conditions of the IKO bearing in operation, find the cause and find the cause immediately, and make adjustments. It returned to normal.

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