Centrifugal blower bearing wear repair technology

Compared to 2020 - centrifugal blower bearing wear repair technology 01 - 16' Abstract 】 F the blue repair technology is the use of polymer metal repair materials centrifugal blower bearing chamber wear the scene to solve the problem, its biggest advantage is that can realize the scene to repair, repair of high efficiency, less input resources, its service life even more than the new parts. 【 Keywords 】 Bearing wear, bearing wear, polymer composites, the blue 1 repair process and equipment introduction centrifugal machine is according to the kinetic energy is converted to potential energy principle, the use of high-speed rotation of the impeller speed, the gas and then slow down, change flow direction, the kinetic energy is transformed into potential energy. In single stage centrifugal fan, the gas from the axial impeller, transform into radial gas flows through the impeller, and then into the diffuser. In the diffuser, gas caused slowdown, changed the direction of flow can this deceleration function converts kinetic energy into pressure. Increased pressure occurs mainly in the impeller, the second happened in the diffusion process. In multistage centrifugal fan, air burning into the next round, with reflux device has higher pressure. 2, fault phenomenon and reason analysis equipment due to the long run, lead to the emergence of the problem of bearing wear, bearing 'run outer phenomenon directly, make the equipment vibration, high temperature obviously, for a long time to run in spite of can lead to bearing damage, lock, such as fault, the equipment transmission failure. 3, centrifugal blower bearing wear the 3 at the site. 1, fault maintenance mode 1) Traditional maintenance mode according to the wear problem, the solution is machined repair after repair welding or brush plating, but both has certain disadvantages: repair welding high temperature thermal stress can not completely eliminate, easy cause material damage, lead to bend or break parts And brush plating coating thickness restrictions, easy to peel, and two methods above are with metal repair metal, cannot change 'hard in hard cooperate relationship, under the force combination, still can cause wear again. For some large equipment, the enterprise also cannot solve the scene, many rely on repair. 2) On-site repair and feasibility analysis of the advantages of the contemporary western countries to solve above problems more use of polymer composite materials repair methods, it has strong adhesion, excellent comprehensive properties such as compressive strength. Application of high polymer material to repair, can neither from removed from machining repair welding thermal stress effect, repair the thickness is not restricted, and the product of metal materials do not have rolled back, can absorb the impact of vibration equipment, avoid wear and tear, and greatly prolong the service life of equipment components, save a lot of downtime for the enterprise, creating huge economic value. 3. 2, the construction process at the site 1) Bearing chamber surface treatment: baked oil, sanding, ensure that the surface is dry, clean and strong. Anhydrous ethanol wipe the surface; 2) Strictly in accordance with a 2:1 ratio to reconcile 2211 f materials to colorless difference; 3) Bearing outer ring surface coating a layer of thin 803 release agent, the thinner the good, dry; 4) 2211 f material evenly to wear surface, and then use the scraper scrape datum on both sides along the fixed size; 5) Waiting for the material curing; 6) Material after curing, and then apply a layer of thin, direct bearing assembly, the process must be completed within 30 points. 4, contrast analysis, application examples of 6, 5 effect summary for bearing a wear is not very serious, the blow grind repair method is adopted to fundamentally good solve the problem of repair, short repair cycle cost is low, the scene without disassembly, without big outsourcing repair. When the wear reaches 1 mm above, can use at the blue patent mould method to repair on-site repair. Its craft is the use of scale bearing a unworn as a benchmark, through mould and f the blue material combination to meet the requirements of repair and use. Zibo f the blue company was founded in 2002, the blue field repair technology in coal mine, cement, paper making, steel, machinery manufacturing and other industries, for all kinds of generic reducer, gear box, gear reducer has been implemented on-line repairing. F the blue polymer composite material field repair technology compared with traditional repair not only save the maintenance time, and wide range of USES, hazard risk is small, fast and convenient, simple operation, low human strength and is worth extending the scene equipment maintenance maintenance of important technical means.