Repair welding technology fix axis wear reliable? - bearing knowledge

After repair welding technology is to use metal repair welding using professional equipment repair parts for cars, milling, planing, grinding or artificial grinding, is worn axis to restore the original size. Repair repair welding machine has the advantage of high precision, but its shortcomings are obvious: first of all, for a large equipment such as fan axis wear problem can't be online repair, need to remove for shaft as a whole, return through heavy machinery and transport equipment manufacturer for repair, so that the overall need cycle is about 20 days, or longer, disassembly and transportation will greatly increase the cost of repair and repair cycle, low comprehensive cost performance, greatly affect the normal production of the enterprise, increase the maintenance cost; Secondly the technology itself thermal stress problems, easy to cause the shaft bending deformation, and building cars might be weld crack, cause the risk of using process break shaft; Finally the repair welding repair generally used artificial grinding processing, this approach is the premise of repair parts did not wear datum, worn parts as a benchmark, to not use beforehand module manually grinding processing, using artificial grinding process is difficult and repair for a long time, at the same time, after repair interface is difficult to achieve 50% above, cause potential safety hazard for later production. Based on the above mentioned, we can see that the repair welding and machining axis wear repair aspect exists many disadvantages, that in addition to the process there is no better technology to solve the shaft wear and tear problems? Small make up next to introduce a new technology of shaft wear repair - — Sauvy carbon nano polymer material, hope to help you. The advantage of the material online repair axis wear 1. The material has good cohesive force, compressive properties and have metal comprehensive mechanics performance of elastic deformation and so on to realize online repair, repair of high efficiency, short time to repair. 2. The material itself has a compressive strength, bending, stretching rate and other comprehensive advantages, can effectively absorb the impact of the external force, great resolve and offset the bearing of the shaft radial impact, and to avoid the possibility of a gap appears, also avoids the equipment wear and tear caused by clearance increases. 3. The technology similar to a cold welding technology, the online repair process does not produce high temperature, good to protect equipment from damage of ontology, and in the process of repair is not restricted by axial uneven wear amount. 4. After the repair will not produce in the process of using metal fatigue wear, on the premise of normal equipment maintenance, the service life of repaired even higher than the service life of the new parts. Case 1 quick fix axis wear problem. On both sides of some cement enterprise 710 kw motor spindle bearing wear, the speed of 990 r/min, uneven wear depth of more than 1 mm, bearings for the NU series bearings, normal running temperature 50 ℃ or so, both ends fixed. 2. Some group subsidiary company German roots blower MG60S bearing wear, rotating speed of 1485 r/min, journal of 70 mm, wear width 30 mm, 2 - wear depth 3 mm, operating temperature about 100 ℃. 3. A large group enterprise bearing wear, bearing interior diameter 680 mm, bearing width 163 mm, 2 mm wear size.