Can a metal spray-on shaft sleeve replace the silicon carbide shaft sleeve in a canned pump?
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Can a metal spray-on shaft sleeve replace the silicon carbide shaft sleeve in a canned pump?
This probably isn’t appropriate; since the manufacturer chooses silicon carbide for the shaft sleeves, they must have taken into account its corrosion resistance, thermal conductivity, and other properties. The final choice still depends on the characteristics of the medium involved in the operating conditions. Other materials for bushings include silicon nitride, alumina ceramics, and pressureless sintered silicon carbide.
If it’s pure water being used, that’s fine, but since silicon carbide bushings are chosen, it must be in a specific polluted environment. For general bushings, we choose silicon carbide bushings, cemented carbide YG8 bushings, or graphite bushings. If you need further information, feel free to contact me again
Sure! Now, pump manufacturers offer similar combinations; Dalian Empire and Dalian Haimi both have them, but the coating material has to be very tough! Generally speaking, if the bearings are optimized silicon carbide types, it is better to use sprayed bushings. If the original configuration uses silicon carbide bushings, it is difficult to find suitable spray-coated, durable bushings.
Theoretically, it is possible; however, the spraying process is usually outsourced by pump manufacturers, and it’s difficult to ensure good quality control. If the coating wears out severely, it can cause the pump to stop functioning properly； Now many pump manufacturers are also seeking this combination, as the shaft sleeves made from this sprayed material are relatively inexpensive, and they have better strength than silicon carbide (in other words, they are less likely to break), but their wear resistance is not as good as that of silicon carbide