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How to repair the roller of the impact crusher

The impact crusher uses rollers to crush and break materials, so it plays an important role in the equipment. In the operation of the equipment, if the feed is not strictly controlled, it is very likely to be this part If damage occurs, it must be resolved in time after the problem is discovered, so as not to affect production efficiency. The following is the repair method of this equipment roller to share with you:  
 
1. First, make preparations before repair, clean up oil, dust, broken pieces, and rust, check the shape and position of each main working part and assembly part, and make a record. Temporarily block the part of the fallen tooth to reduce the impact of the failure.

2. When the impact crusher's roller shaft is lightly worn, you can choose to repair the roller teeth. The roller teeth are bottomed, filled, and then dried. After heat preservation for 1 hour, vertical welding is used for symmetrical deposition. After layering, use a hammer to hammer and remove the stress. The surface layer of the roller teeth is insulated for 1 hour, and the pre-welded part is preheated. The preheating temperature is 150°C. The welding rod is 4mm in diameter and the welding current is 200A. Two people use horizontal symmetrical welding at the same time, stacking from bottom to *. . Cover with as*os cloth immediately after welding for heat preservation and slow cooling.

3. If there is serious wear or leakage, the roller shaft and the roller teeth can be welded together. The two ends of the roller shaft are erected on two rollers, and the root of the roller teeth is processed with a carbon arc gouging and fixed on the single side V-shaped groove. The corresponding position of the roller shaft. After each row is welded, the roller is rotated and the next row is welded until the welding is completed.

4. After all parts that need welding or surfacing are welded and meet the requirements, machine the spindle bearing and sealing parts to ensure the assembly dimensions of each part, and then assemble according to the technical requirements of the drawings. Note that the assembly should be in accordance with the original The structure is installed in order to prevent the normal operation of the equipment from being affected.



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