Two classic ball mill bearing wear repair case

Two classic ball bearing 2020 - bit wear repair cases 06 - 20 ( F the blue) Ball mill in the process of long-term operation, the bearing wear is a common problem, some manufacturers for urgent production task need to resume production, traditional brush plating, repair welding machining methods of on-line repairing, and easy cause secondary damage to bearing. The method mentioned in the article for polymer composite materials online repair method, combined with the equipment damage, scraping the research method and mold repair process online repair, repair short, cost-effective. One application case, mine ball mill bearing wear online repair a mining enterprise ball mill bearing wear occurs, bearing a diameter of 895 mm, width 240 mm, uneven wear quantity about 1 mm. Equipment in the process of production, bearing overheating caused by lubrication problem, holding in death of the sealed bearing inspection found bearing has appeared wear, enterprises get in touch with our company, we hope our technology for the implementation of the repair at the scene. Combined with the equipment damage, and eventually decided to adopt the repair process to implement repair the blue scraping the inquiry method. Due to large bearings, heating more troublesome, considering the bearing inner ring is separable, alone on the bearing inner ring heated hot charging process, install other parts bearing after cooling. A total of 8 hours to restore the bearing installation, saving precious downtime for the enterprise. Specific process is as follows: 1. Using oxygen acetylene to bake oil of wear and tear of the ball mill bearing chamber, until no sparks; 2. Using treated fixed position for grinding polishing machine, until the bared metal color; 3. Using anhydrous ethanol wipe the bearing surface, to ensure the surface is clean, dry, solid; 4. Mixed right amount at the blue 2211 f polymer composite material, apply to the surface of to repair, to apply a layer of thin and repeatedly research, to ensure that any microporous materials into a surface; 5. Using sample feet along the datum for scraping the inquiry; 6. After curing materials, the use of abrasive belt grinding to remove high; 7. Again to reconcile a small amount of 2211 f high polymer composite material, and then apply a layer of thin; 8. After completion of bearing heating, heating in a thin layer of bearing inner surface with brush tuomoji, rapid installation of bearing. Use case 2, large trunnion ball mill bearing wear online fix the ball mill axial uneven wear caused by 0. 7 mm, rear axle shoulder wear 10 mm. Have been unable to normal operation. Equipment parameters: the diameter of axle diameter: 1400 mm, width: 350 mm parts material: carbon steel equipment speed: 30 ~ 50 r/min or so wear size: uneven wear 0. 7 mm with form: interference fit equipment weight: more than 400 tons, adding more than 200 tons of steel ball weight repair process is as follows: 1, ready to repair ball mill bearing former work, such as tools, materials and positioning model feet; 2, used to make a good template rule to determine the ball mill diameter of axle wear repair anchor point and the height; 3, repair the surface of baked oil and rough handling, the surface is clean, dry, strong; 4, in strict accordance with the proportion of mixed blessing the blue polymer composites 2211 f, and mix until uniform color without chromatic aberration; 5, in the ball mill bearing wear place daub polymer material, thickness rate is higher than the wear size; 6, hot charging bearing, enough time curing materials, concrete curing time according to the temperature and the reference material technical data sheet.