Dryer taper bearing a field repair of wear

Drying cylinder taper bearing wear and tear of the 2019 - at the site 04 - 09 ( F the blue) 【 Abstract 】 This article for drying cylinder shaft head wear causes of papermaking industry were analyzed, and put forward the f the blue technology products for drying cylinder bearing an on-site repair technology solutions, proves that using the blue technology products is a good way to solve the problem of drying cylinder bearing bit wear. 【 Keywords 】 : drying cylinder, taper bearing wear, paper machine, field repair, transmission parts wear, diameter of axle wear a dryer, equipment introduction is baked cadre of papermaking industry key equipment, by the cylinder, cylinder lid, joint bearings, steam, siphon, its role is in the process of running internal steam transfer paper baking hot light, dryer, generally adopts HT200, HT250 material, dryer ensure uniform heat transfer, everywhere in order to achieve the moisture within the paper drying, finishing the role of the paper, is the core of the key parts in the production of papermaking. Second, the site condition indicate that the papermaking enterprises in normal production for dryer operation side bearing wear problem caused downtime, the drying cylinder bearing for 1:12 taper shaft, trail size for & phi; 220 mm, bearing a width of 130 mm, maximize unilateral wear is about 5 mm. Three, dryer equipment problem analysis used bearings for the double LieDiao roller bearing, the way the bearing and shaft generally have the back sleeve, sleeve and the cone axis to cooperate. Drying cylinder bearing a high working temperature, drive side by steam, in normal production and operation of bearing in a sealed environment to normal operating temperature above 80 ℃, bearing components will therefore heat expansion, so in the process of operation of bearing radial clearance size greater than conventional theory under clearance, it is easier to make the material into attachment, due to material into easy to cause the roller surface contact with the raceway appear fatigue, caused by bearing roller running resistance increases, the roller surface appear small pitting or pit type flaking, and spalling of metal can be attached on the raceway surface of raceway surface roughness. Another dryer because bearing a harsh operation environment, the paper machine drying cadre likely to occur under the condition of low speed, overload, high temperature adhesive wear, and then again the raceway surface roughness. In production in the operation of the bearing inner ring friction heat continuously, and lead to inner ring expansion, and the diameter of axle surface fitting clearance, if not handled in time replace bearing is bound to cause the bearing inner ring and shaft relative motion causing wear and tear. Four, dryer cylinder bearing a repair process for papermaking enterprise bearing the wearing problem of conventional repair methods mainly include: spray, brush plating, welding of three methods for repair. Traditional way of repair is usually will spare dryer equipment downtime after the replacement, and then in the dryer will wear off for repair welding, machine repair. Either repair methods cannot be repaired quickly and in a short time, also because structure of paper machine, dryer to replace a longer downtime, time-consuming, laborious using f the blue polymer composite materials for field repair, use of f the blue patent match mold repair materials can be finished in 10 hours to repair, the maximum guarantee the repairing accuracy and operating conditions, dryer after repair of bearing a good application effect, is the first choice for field repair scheme. Dryer for the plant's bearing wear problem, first of all, according to the drawing size for processing repair mold, using unworn front axle shoulder position, in view of the wear parts use of polymer composite materials for filling. Materials are removed in curing mold, polishing the revised material directly bearing assembly. Five 1, site repair process. Repair process: 1) According to the drawing requirements and field measurement size, processing mould; 2) Surface baked oil processing, and then polished, bared metal luster; 3) Empty test mould, check the mold and shaft fit degree; 4) Mould fit to shaft without exception after remove the mold; 5) Mold is removed after brush 803 release agent, dry spare; 6) According to the proportion of mixed blessing the blue 2211 f metal repair materials and apply to the wear and tear parts; 7) Mold assembly, waiting for the material curing; 8) Polished surface; 9) According to the proportion of mixed blessing the blue 2211 f metal repair materials; 10) Again daub material and bearing assembly. 2. Repair legend: six dryer, the conclusion is the key equipment of the papermaking industry, its operation state directly affect the normal production enterprise, in the event of a dryer for bearing a after outages caused by the wear and tear problem how to choose a high quality solutions at the first time is the key of the enterprise equipment management, through the dryer for bearing wear problem of repair, proved that using the blue polymer composites is fast, efficient characteristics. Late repair after the completion of the continuous tracking, using a state is good, again proved the feasibility of the blue technology.