Caterpillar tractors, combine harvesters, straw returning machines, and other farmland work machines, when operating in the field, are likely to be pulled off due to large traction resistance or untimely maintenance. Here's how to remove broken bolts.
1. Remove the dirt from the broken end of the broken bolt. Use the center pin to make a hole in the center of the section. Then install a hand drill with a 6 to 8 mm drill to drill in the center hole of the section. Note that this hole must be drilled . After drilling, remove the small drill and replace it with a drill with a diameter of 16 mm. Continue to expand and drill through the holes of the bolt.
2. Select the electrode with a diameter of 3.2m or less, use the medium and small currents in the drill hole of the broken bolt to weld from the inside to the outside, and use the 1/2 of the entire length of the bolt as the starting point for surfacing. When starting welding, do not start the arc too long so as not to burn the outer wall of the broken bolt. After surfacing to the upper end of the broken bolt, a further cylinder with a diameter of 14 to 16 mm and a height of 8 to 10 mm is continuously welded.
3. After welding is completed, hammer the end face with a hammer to cause the broken bolt to vibrate along its axial direction. Due to the heat generated by the arc and its subsequent cooling, coupled with the vibration at this time, the loosening occurs between the broken bolt and the thread of the body.
4. Look carefully after percussion. When traces of rust fall out at the fracture, you can put the nut of M18 on the stencil welded out and weld the two together.
5. After welding, it is possible to cool slightly. Afterwards, use a spanner to put the wrench on the nut and turn it to the right or left (also twist the nut face with a small hammer while twisting the left and right hands). This will remove the broken bolt. .
6. After removal, thread the inside of the rack hole with a suitable tap to remove rust and other debris from the hole.
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