During the long -term operation of the pump, the bearing room wear, bearing position wear, pump cracks and rupture, water pump air erosion, and flushing wear of water pump bearing frames often occur. After the above problems occur, the traditional solution of the enterprise is to repair and repair after the welding or plating plating. ; The plating of the electrophoresis is limited by the thickness of the coating and is easy to peel off. The above two methods are fixed metal with metal. It cannot change the "hard pair" coordination relationship. Under the comprehensive effect of each force, it will still cause again. In contemporary Western countries, the above problems use the repair method of polymer composite materials. It has super strong adhesion, excellent pressure resistance strength and other comprehensive performance. The application of high -molecular materials can be removed from disassembly. Enterprises save a lot of shutdown time and create huge economic value.