How to improve the wear resistance of centrifugal fan impeller?

Release Time：

2022-09-15 15:57

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1、Improve blade structure

The blade working surface processing into serrated, change hollow blade for solid blade, blade welding anti-wear block and other methods, these can reduce the impeller wear to a certain extent.

2, the blade surface treatment

Can be carried out on the centrifugal fan blade surface treatment, generally have blade overlay welding, add wear-resistant lining plate, ceramic patch, etc., the advantage of these methods is to increase the blade surface hardness, so as to improve the blade wear resistance to a certain extent. Surface pile is the choice of surfacing welding rod (or welding wire), manual arc (or automatic welding) pile welding in the blade easy to wear parts, to improve the blade surface quality, to protect the blade and improve the blade life. Also can be in the blade working surface and the wheel surface with wear-resistant lining plate, the blade to implement the overall wear protection. Or use ceramic patch to enhance wear resistance, but the installation of ceramic patch is very inconvenient, take the bonding way to fix the ceramic lining is not solid, in the fan high-speed rotation process, ceramic lining is easy to fall off the failure, fall off the ceramic patch will also cause damage to the fan blade.

3, improve the pneumatic design

Reasonable choice of centrifugal fan inlet shape, design should ensure that the impeller small inlet relative speed, try to reduce the number of revolutions of the ventilator, choose the appropriate impeller runner shape, so that the blade to the exit of the radius of curvature of the arc from small gradually large, so as to reduce the impact of solid particles and blade opportunities.

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