The advantages of fag bearing processed by repair welding machine are high repair accuracy, but its disadvantages are also obvious: firstly, the shaft wear of large equipment such as fans cannot be repaired online. The shaft needs to be disassembled as a whole and returned to the equipment manufacturer for repair through heavy machinery and transportation tools. In this way, the overall cycle is about 20 days or even longer, Disassembly and transportation will greatly increase the repair cost and repair cycle, with low comprehensive cost performance, greatly affect the normal production of the enterprise and increase the maintenance cost; Secondly, the process itself has the problem of thermal stress, which is easy to lead to the bending deformation of the shaft. At the same time, it may cause cracks in the welding parts of the car, resulting in the risk of interrupting the shaft during use; At present, ina bearings are generally repaired by manual grinding after welding. The premise of this treatment method is that there is an undamaged datum plane at the repaired part. Based on the undamaged part, the pre processed module is used for manual grinding. The manual grinding process is difficult and the repair time is long. At the same time, it is difficult to reach more than 50% of the repaired contact surface, Cause potential safety hazards for future production.
Based on the above, it can be found that repair welding and machining do have many disadvantages in repairing shaft wear. Is there a better technology to solve the problem of shaft wear in addition to this process? Next, we will introduce a new technology for shaft wear repair – soray carbon nano polymer material.
1. The material has good adhesion, compressive properties and comprehensive mechanical properties such as elastic deformation of NSK bearing metal, so as to realize on-line repair with high repair efficiency and short repair time.
2. The material itself has the comprehensive advantages of compression resistance, bending resistance and ductility, which can effectively absorb the impact of external forces, greatly resolve and offset the radial impact force of the bearing on the shaft, avoid the possibility of clearance, and avoid the wear of the equipment caused by the increase of clearance.
3. This technology is similar to a cold welding technology. It will not produce high temperature in the process of on-line repair, well protect the equipment body from damage, and is not limited by the wear of one side of the shaft in the process of repair.
4. Metal fatigue and wear will not occur during use after repair. On the premise of normal maintenance of NTN bearings, the service life after repair is even higher than that of new parts.