The pump casing is frequently worn out, and the impeller is damaged

I understand the owner’s trouble; frequent wear and damage to the pump casing and impeller is indeed very troublesome. I’ll give you a few directions to check as a reference: First, see if there are any hard particle impurities in the medium being transported, such as sand, gravel, or metal shavings; hard particles moving at high speeds can easily cause erosion and wear on the pump casing and impeller ； Check whether the clearance between the impeller and the pump casing is within the normal range; too small a clearance can lead to frictional wear. It is also necessary to verify whether there are any issues with the dynamic balance of the impeller, as an unbalanced impeller will wobble during operation, thereby increasing wear ； If the operating conditions indeed involve severe wear, it is possible to consider replacing the components with wear-resistant materials, or applying a wear-resistant coating to the inner wall of the pump casing for reinforcement. It is best to have professional pump maintenance technicians examine the actual operating conditions on site, as the operating environments for different pumps vary; only through accurate diagnosis can the problems be completely resolved.

I think it’s being ground; I still don’t know what material will be used. There is a small amount of silicon dioxide in the medium

Are there solid particles in the medium? If not, it is caused by cavitation. Cavitation can be resolved by cleaning the inlet filter, increasing the diameter of the inlet pipe, raising the inlet pressure, and reducing the outlet valve opening.

It seems that cavitation is more likely

Yes. Will strengthening the material be enough?

The rotation speed can be reduced (by changing the pump), wear-resistant materials can be used, and a pump type suitable for transporting particles can be selected