In the steel rolling production line, the main equipments are conveying roller table, heating furnace, rolling mill, testing device, cooling device and finished product collecting device.
Bearings are the most commonly used parts in rolling steel production. The environment of steel rolling production is very harsh, so the working environment of bearings is also very harsh most of the time. The main factors are:
High temperature
In the steel rolling production line, especially the heating furnace has the highest temperature, followed by the hot steel conveying line and the hot rolling mill. If the bearing is continuously rotated at a temperature exceeding 125 °C for a long time, the bearing life will be reduced, so necessary cooling measures should be taken.
high humidity
During the working process of the bearing, it is easy to be corroded by descaling water, cooling water, steam, etc., resulting in poor lubrication, rust, etc., and the bearing will fail early for a long time, which requires the bearing to take waterproof measures or replenish grease in time.
dusty
Generally, steel rolling enterprises are equipped with dust removal devices, which can effectively clear the dust generated during the rolling process, but there will still be dust residues. These dusts enter the bearing and easily cause bearing wear and affect the service life of the bearing.
shock
Vibration is quite sensitive to bearing damage, spalling, indentation, corrosion, cracks, wear, etc. will be reflected in the bearing vibration measurement. Therefore, by using a special bearing vibration measuring instrument (frequency analyzer, etc.), the magnitude of the vibration can be measured, and the specific situation of the abnormality can be inferred through the frequency distribution.
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