Fan Impeller Surface Treatment
The fan impeller can be processed with carburizing, plasma welding, spraying hard alloy, stickup ceramic chip, and so on.
Common advantage of these methods is to increase the hardness of the blade surface of the centrifugal fan, to improve the wear resistance of the blade.
But there are some disadvantage. Carburizing process is too difficult, and carburizing layer thickness need to be determined by the thickness of the blade, wear condition and carburizing process.
What is more, welding make the surfacing blade deformation, and repeated welding cracks can cause foliage, in this case, the efficiency will be not good.
Spraying hard alloy, the coating thickness is difficult to determine during the spraying.
While if stickup the ceramic chips, the effect is better, but the price is higher.
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| wear resistant treatment of centrifugal fan impeller |
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