Specific implementation of fix rollers of roll crusher

1.Repair of roller teeth

Based on roll tooth,it is firstly filled with the electrode J506,while J506 electrode is carried on drying to 380 degrees at first and kept heat 1 hour, then symmetrical stack deposited by vertical welding, heap rinsing after each layer with a hammer hammering to deal with stress. The surface of the tooth layer uses D856, electrode drying at 300 ℃ prior to the welding, and incubated for 1 hour.Preheating for the pre-welding portions,with the preheating temperature at 150 ℃. The electrode with a diameter is 4mm, and the welding current is 200A. Two individuals symmetrical cross-dressing while using welding, dressing up a road from the heap. After welding, immediately covered with asbestos cloth for insulation and slow cooling.

 

2.Welding of roller and roll teeth

The ends of the rollers mounted in the two rollers, the tooth root planed sided V-groove and fixed with a carbon arc gas in the corresponding position on the roller shaft. Hit bottom and fill layer using J506 welding, hammering the heap after each layer are deposited to the stress treated surface layer using D856 welding, after welding to weld the whole heated to 100 degrees covered with asbestos cloth insulation slow cooling. Each welding finished rotating roller shaft then welded to the next row until finished welding.

 

3.Machining and assembly

After all the parts to be welded or surfacing welding meet requirements embodiment, the spindle bearing and seal portions are machined to ensure the size of each part of the assembly, and finally assembled according to the requirements of technical drawings.
 

Using the above method for repairing roll crusher roller device,it can greatly reduce repair costs, significant economic, and  have a positive role in promoting benefits for enterprises to reduce the cost of production.