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Solve pinion shaft grinding of ball mill on site

Date:2019-06-05 13:43     writer:cement editor     Views:

  Ball mill is widely used in the production of cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal dressings and glass ceramics. It is used for dry or wet powder of various ores and other grindable materials. mill. The ball mill has a load every time it starts, so it has a great influence on various components and equipment such as motors, reducers, bearings and large and small gears. Frequent startup increases the load of components, increases the failure rate of equipment, and reduces equipment. The service life.

  The ball mill is under the heavy load of low speed, heavy load and high speed, and under the action of equipment vibration and radial impact, metal fatigue occurs in the bearing chamber or bearing position, resulting in permanent deformation; bearing inner ring and shaft or bearing outer ring and bearing A clearance fit occurs in the chamber, causing wear in the relative motion. Once this problem occurs, it will seriously affect the normal production of the equipment. In the 21st century, developed countries often use carbon nano-polymer materials for on-site repair. For different equipment, different operating conditions, different wear conditions, using the corresponding repair process, it can be repaired quickly, simply and effectively, especially due to the concession of polymer materials, always maintain 100% contact area, avoiding the generation of matching clearance, The life of the repaired equipment is even higher than that of the new equipment, which fundamentally solves the problem of shaft wear of the ball mill.

  An enterprise maintenance personnel found that the vibration of the pinion shaft bearing housing of the ball mill reducer is relatively large, and the bearing temperature is continuously rising. In this case, the emergency stop, the inspection of the pinion shaft bearing seat, the bearing of the pinion shaft support side is seriously damaged, and the bearing position is seriously worn. The bearing position of the original diameter of 280 mm is now 268 mm after the wear, the diameter size Wear 12mm, single side wear depth of 6mm, and local wear is more serious. The speed of the equipment is relatively high, reaching 960r/min per minute, and the requirements for concentricity after repair are very high. During this period, business executives learned more about online repair technology through network and telephone consultation. Other online repair technologies require on-site reels, but enterprise equipment does not have the conditions for disc driving at all, and there is no way to wear depths up to 6mm. In the end, Solei Industries was selected to implement on-line rapid repair of the problem of enterprise ball mill wear.

  How does Sole carbon nano-polymer repair technology achieve rapid on-site repair?

  The specific operation process is as follows:

  (1) Surface baking oil: using acetylene oxygen for baking oil, the operation time is controlled between 10 minutes and 15 minutes;

  (2) Surface grinding: The surface is ground and cleaned with a sander to improve the adhesion of the Sole carbon nano-polymer SD7101H. The entire grinding process is controlled in about 20 minutes;

  (3) Calculate the amount of Sole carbon nano-polymer SD7101H, and adjust SD7101H according to the calculation result;

  (4) Evenly apply the conditioned SD7101H evenly to the surface of the bearing position, and quickly install the tooling in place; from harmonizing SD7101H to

  The tooling is installed in place and the process is completed within 10 minutes;

  (5) After the SD7101H is naturally cured for 30 minutes, it is cured by heating, and the entire curing time is 2 hours;

  (6) After the SD7101H is cured, prepare the heating bearing and disassemble the work tool, and both at the same time. After the tooling is removed, the surface is removed.

  Do a simple process to verify the size of the repair and remove excess material from the surface. At the same time, the bearing is heated to the specified temperature, quickly installed in place, and the repair is completed.

  Field repair ball mill pinion shaft bearing position picture


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