New data separation of traditional machining technology to repair reducer bearing wear

【 Abstract 】 A steel mill reducer bearing wear, the wear quantity for unilateral 0. 5 mm or so, the speed reducer is the key equipment of the enterprise consumer line, rendering the wear problem after reducer bearing ablation phenomenon, form bearing wear problem, using the traditional separation the blue polymer composite materials machining technology to deal with the problem very well. 【 Keywords 】 Rolling mill, steel industry, online repair, trunnion running wear, bearing inner ring, polymer composite materials, the blue, 1, equipment general reducer gear box is a kind of transmission, the common used for low speed high torque transmission device, the principle is the electric motor, internal combustion engine, motor, or other high-speed operation of the power, through the reducer on the input shaft of less number of teeth on the gear engagement output shaft of the wheel, so as to reach the purpose of the deceleration; Is the ratio of the size of the number of teeth on the gears, gear ratio. Reducer is a kind of the blockade in rigid casing of gear transmission, worm drive and gear - Worm drive composed of independent components, commonly used for the original reduction drive between moving parts and working machine installation. Between the prime mover and work machine or actuator has a function in matching speed and transfer torque is used widely in modern machinery. 2, fault phenomenon and reason analysis of some iron and steel enterprise reducer bearing is a bearing fracture formation bearing wear, 280 mm diameter of axle, bearing a 140 mm, wear is 0. About 5 mm. Reducer bearing wearing reason is mainly due to the speed reducer of working conditions, in the process of long-term operation, the bearing appearance was bearing inner circle of the extrusion pressure and the effect of compound mechanical force, mating surface rendering metal fatigue. Poor concession of metal materials, the passage of time is easy to form micro fit clearance, if not found in time and take measures, can form micro clearance from time to time extension, form directly run bearing inner ring, bearing damage. 3, the traditional form and f the blue field repair repair form of technical analysis. 3. 1, the traditional repair form for such bearing wear and tear of equipment, the traditional repair process is after removal transportation equipment to repair workshop to stop treatment, and the traditional machine processing plant to wear is usually stop after repair welding machine disposal, while smaller for wear by electroplating way to stop to repair. Above two kinds of repair technology is now commonly used the outside of the usual industries repair workshop repair wrist, such repair process is repair precision is higher, but affected by domestic machining level incurred after repair welding to repair the bearing and the bearing of the effective contact area is lesser, the use of smaller effective contact area after a period of time for metal fatigue damaged would render wear problems; Larger bearings in addition to wear a stop repair welding, the repair welding process needs strict control, is likely to be affected by any carelessness form bearing parts for repair welding high temperature through the cause of thermal deformation, influence of overall rigidity, bring irreversible damage to the equipment. 3. 2, the blue field repair form f the blue polymer composite materials 2211 f is a kind of high temperature resistance, strong corrosion resistance and can stop the machining of metal repair data, the data after curing has a good bonding power and mechanical performance, not only the strength and hardness of metal, and its microscopic concession, USES the high polymer material to repair, no repair welding thermal stress effect, repair thickness will not been restricted. Because of the speed reducer for any downtime, and thus to ensure accuracy under the premise of repair time as short as possible, the enterprise has the machining ability, but concerns about traditional repair welding technology will influence on shaft formation heat, thermal stress and repair welding repair as demand control, and repair welding for a long time. So he gave up the traditional repair welding machine repair process, repair welding link will adopt alternative products f the blue 2211 f, 2211 f in applying information after heating curing 75 min can stop grinding treatment, repair time is short, high precision, is applicable to the repair. 4, 4 f the blue repair process and application of image information. 1, the blue 4 repair process. 1. 1, first of all, the practice of the field measurement of axial size, once again confirm the uneven wear size; 4. 1. 2 after lathe car one knife, eliminate impurities repair the appearance and the oxide layer, make its unilateral depth greater than zero. 8 mm, and the surface coarsening disposal ( Processing coarse thread) ； 4. 1. 3 using acetone or ethanol ( Analyze the pure, the purity of 99. 7%) Clean appearance; 4. 1. 4 according to the proportion to reconcile data until the colorless difference; 4. 1. 5 axis under the conditions of low speed rotation daub polymer materials. Points repeatedly daub, the first layer to thin, to ensure that data into every pore pressure, the thickness of the coating material is greater than the benchmark size of shaft, and set aside the machining allowance; 4. 1. 6 daub data after the shaft stick to rotate in a state of nature or heating solidifying ( Temperature in 40 ℃ ~ 60 ℃) ； 4. 1. 7 curing after the completion of the data, and then stop after grinding machine grinding base dimensions of the shaft, the amount of interference can be adequate add 0. 03 ~ 0. 05mm。 Note: grinding, necessary use of grinding liquid cooling; Shaft end parts repair data chamfering disposal must stop. 4. 1. 8 machining repair after the completion of the heat load bearing. 4. 2, 5, and conclusion after the repair process for the victory of the reducer shaft wear problem of gear repair, once again proved that f the blue technology can basically very good deal with axial wear problem, compared with the traditional repair not only save the maintenance time, and use common, hazard risk small, quick lunch, simple operation, low human strength. The blue products can match a variety of repair process, on the premise of precision guarantee repair quickly and efficiently deal with all kinds of transmission parts wear problem.