Manufacturer of diesel generator sets, fire pump power units, and other products
02
2026
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02
Maintenance Plan for Faults Occurring in Pump Motors During Long-Term Operation
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During long-term operation, water pumps often experience wear in the bearing housing and bearing journal, cracking and rupture of the pump casing, cavitation, and erosive wear.
During long-term operation, pump bearings and bearing housings often suffer from wear, bearing-seat wear, cracks and fractures in the pump casing, cavitation, and erosive wear. When these problems occur, the conventional remedial approach adopted by most enterprises is either repair by surfacing welding or brush plating followed by machining. However, both methods have inherent drawbacks: surfacing welding generates thermal stresses at high temperatures that cannot be completely eliminated, which can damage the material and lead to deformation or fracture of the component; brush plating, on the other hand, is limited by coating thickness and is prone to spalling. Moreover, since both methods involve repairing metal with metal, they fail to alter the “hard-on-hard” mating relationship, meaning that under the combined action of various forces, re-wear will still occur. In contrast, contemporary Western countries increasingly rely on polymer-based composite materials for addressing these issues, owing to their exceptional adhesion, outstanding compressive strength, and other comprehensive performance characteristics. Polymer-based repair eliminates the need for disassembly and machining, avoids the adverse effects of welding-induced thermal stresses, and imposes no restrictions on repair thickness. Furthermore, unlike metallic materials, polymer composites possess inherent resilience, enabling them to absorb impact and vibration, thereby reducing the likelihood of re-wear and significantly extending the service life of equipment components. This not only saves substantial downtime but also generates considerable economic value for enterprises.
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Manufacturer of diesel generator sets, fire pump power units, and other related products
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Mihe Industrial Park, Qingzhou City, Shandong Province
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