Online repair of high temperature fan bearing wear

Wearing traditional repair method of high temperature fan bearing repair welding and processing: thermal stress concentration, easy to cause axial bending deformation or fracture, and regarding repair or large axle bearing chamber, high comprehensive capital, repair cycle is long, the intensity of labor is big, the processing equipment request tough; At the same time to implement online repair; Brush plating: about transmission part wear mode request strict, namely average wear, the wear depth less than 0. 2 mm, repair efficiency as the additive of brush plating thickness increase exponentially, when brush plating compare with thick, easily shattered; Thermal spraying, has strict request to the thickness of coating layer, about large axial or bearing housing repair, comprehensive capital is high, the repair cycle is long, the intensity of labor is big, the processing equipment request tough, and unable to implement online repair; To sum up, repair welding machining, thermal spray repair process cannot be implemented online repair, brush plating is able to complete the online repair, but the strict request compare on the wear depth, that in addition to can have a better online repair process? Sauvy carbon nanometer polymer materials technology online repair of high temperature fan bearing wear and this technology is the application data of mechanical property and corresponding repair online repair and other large axial fan of wear and tear. The technology to repair the advantage of high temperature fan axis wear has the following points: ( 1) Good bond pressure resistance, abrasion resistance and have metal comprehensive mechanics performance of elastic deformation and so on to complete the online repair, repair of high efficiency and no demand of equipment a large number of disassembly, eight hours to finish repairing the ordinary situations; （ 2) The technique, similar to a cold welding technology, on-line repairing process does not produce high temperature, good maintenance equipment from damage of ontology, and in the process of repair is not restricted by axial uneven wear quantity; （ 3) After repair will not produce in the process of using metal fatigue wear and tear, in normal maintenance under the premise of care equipment, its use life and higher than that of the new parts after the restoration of life. Online repair of high temperature fan bearing wear cases show high temperature fan: spindle diameter of 160 mm, the speed of 1500 r/min, drive side parts bearing wear, wear width is 80 mm, the wear depth is about 0. 2 - 0. 5mm。 Simple: repair process also compare to not wear surface as a benchmark, adopt sauvy tooling repair process stop online repair.