Agricultural machinery broken bolt how to take out

1. First, remove the sludge from the broken surface of the broken bolt, and use the center trowel to smash the center of the section. Then use an electric drill to drill a drill with a diameter of 6 to 8 mm. Drill the hole at the center of the section. Note that the hole must be drilled. . After the hole is drilled, the small drill bit is removed, and the drill bit with a diameter of 16 mm is replaced, and the hole of the broken bolt is further expanded and drilled.
2. Take a welding rod with a diameter of 3.2 mm or less, and use the medium and small currents to carry out surfacing welding from the inside to the outside of the broken bolt hole. Take the half of the entire length of the bolt from the beginning of the surfacing. Begin arcing at the beginning of the welding process so as not to burn the outer wall of the broken bolt. Surfacing to the upper end of the broken bolt. Then continue to build a cylinder with a diameter of 14 to 16 mm and a height of 8 to 10 mm.
3. After the surfacing is completed, hammering the end face with a hand hammer causes the dead bolt to vibrate in the axial direction. Due to the heat generated by the arc and subsequent cooling, coupled with the vibration at this time, loosening occurs between the broken bolt and the thread of the body.
4. Carefully observe that when traces of iron rust leaking from the fracture are found after tapping, the nuts of the M18 can be placed on the surfacing stigma and the two are welded together.
5. After soldering, it is cool, and it is twisted with a plum wrench around the nut to twist it back and forth. It is also possible to tap the nut face with a small hand hammer while twisting back and forth, so that the broken bolt can be removed.
6. After taking out the broken bolt, use the appropriate silk hammer to process the thread in the frame once to remove the rust and other impurities in the hole.

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