Troubleshooting：

Centrifugal fan transmission parts wear is often equipment problems, including fan bearing bits, bearing chamber wear and so on. For the centrifugal fan for the above failure, the traditional repair methods are pile welding, thermal spraying, brush ferry, etc., but there are certain disadvantages: patch welding high temperature thermal stress can not be completely eliminated, easy to cause damage to the material, resulting in bending or fracture of the parts; and brush plating by the thickness of the coating is limited, easy to flake off, and the above two methods are metal to repair the metal, can not change the "hard to hard" fit relationship, under the combined effect of the forces will still cause encapsulation of the metal. The above two methods are to repair metal with metal, which cannot change the "hard-to-hard" relationship, and under the combined effect of various forces, it will still cause the re-wear of rubber-coated rollers.

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