Generally, when the screw is broken, I don't believe ev […]
Generally, when the screw is broken, I don't believe everyone knows what to do. Many people give up directly and change their positions to continue. In fact, there are still many ways to solve it. It ’s not impossible to take it out. Then let's find out what are the six tips for removing the cleverly unscrewed screws?
1.First remove the mud on the surface of the broken screw, use the center 铳 to chop the center of the section, and then install a drill with a diameter of 6-8 mm using an electric drill, and drill the hole in the center 铳 hole of the section. Pay attention to the hole. through. After drilling the hole, remove the small drill bit and replace it with a 16 mm diameter drill bit. Continue to enlarge and drill through the hole of the broken bolt.
2. Take a welding rod with a diameter of less than 3.2 mm and use small and medium currents to drill the bolts from the inside to the outside. Surfacing is performed at the beginning of the surfacing, and half of the entire length of the bolt can be taken. When starting surfacing, do not start the arc too long, so as not to burn through the outer wall of the broken bolt. After surfacing to the upper end surface of the broken bolt, surfacing welding is continued to produce a cylinder with a diameter of 14-16 mm and a height of 8-10 mm.
3. After surfacing welding, hit the end face with a hammer to make the broken bolt vibrate along its axis. Due to the heat generated by the previous arc and the subsequent cooling, plus the vibration at this time, the loose bolt and the thread of the body will be loosened.
4. Carefully observe that when a small amount of rust leaks from the fracture after striking, you can take the M18 nut sleeve on the surfacing column head and weld the two together.
5. After welding, use a plum wrench sleeve while it is still hot, twist it left and right on the nut, or twist the end face of the nut with a small hand hammer while twisting back and forth, so that the broken bolt can be removed.
6. After removing the broken bolts, use a suitable wire hammer to process the wire fasteners in the rack again to remove rust and other debris in the holes.
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