Wear reasons of common bearing and repair method

(1) normal fatigue wear of metal, which is the inherent characteristic of metal itself;

(2) Fit relationship problem, parts in the process of processing no matter how high the precision of processing, can never reach 100% of the parts fit, from the microscopic magnify observation, metal fit surface can only do 30%-50%, so the small force surface of the fit part is also one of the fundamental causes of metal fatigue wear;

(3) Installation problems. During the installation process, the installation position of bearings cannot be well controlled or the clearance of bearings cannot be effectively controlled, resulting in the bearing cannot be in an optimal state during operation. As a result, the running resistance increases, the temperature rises, and more torque is applied to the mating surface, resulting in the relative motion between the bearing inner ring and the shaft surface, resulting in shaft wear;

(4) Four is the operation and maintenance, including the poor lubrication of bearings, the high operating temperature caused by the blockage of the cooling system, the loosening of the fastening device, etc.

For a long time, there are no more than several repair methods for shaft wear, such as repair welding, spraying, brush plating, etc., but these methods are often limited by complex technological conditions and site environment, especially in the face of some sudden emergency, large equipment, complex disassembly and other equipment problems, these methods are obviously willing but insufficient. Now we can also choose Solay carbon nano polymer material technology to repair shaft wear. This technology can be completely repaired on site without secondary processing of the repaired surface, and the whole repair process will not affect the material and structure of the shaft itself, which is safe and reliable.