How to remove the broken high-strength bolt?

How to remove the broken high-strength bolt? Let's learn more about it. 1. First remove the silt on the surface of the broken high-strength bolts, use the center gun to kill the center of the section, then use an electric drill to install a drill bit with a diameter of 6-8mm, and drill a hole in the center of the section. Note that the hole must be drilled through. After the hole is drilled through, take out the small drill bit, replace the drill bit with a diameter of 16mm, and expand the hole of the broken bolt again and drill it through. 2. Take a welding wire with a diameter of less than 3.2mm, use small and medium currents in the drilled hole of the broken bolt, and carry out surfacing welding from the inside to the outside. The starting position of the surfacing welding can be half of the total length of the broken bolt. When gradually surfacing, the arc should not be too long to prevent the surface of the broken bolt from being burned through. After surfacing welding to the upper end surface of the broken bolt, continue surfacing welding to produce a cylinder with a diameter of 14-16mm and a height of 8-10mm. 3. After surfacing, hammer the end face with a hammer to make the broken bolt vibrate along its radial direction. Because of the heat generated by the previous electric arc and the subsequent cooling, coupled with the vibration at this time, the broken bolt and the thread of the human body will be loosened. 4. Carefully observe the high-strength bolts. When you find a small amount of rust leaking from the fracture after beating, you can take the M18 nut sleeve and weld them together on the top of the surfacing welding column. 5. After welding, use a torx wrench glove while it is slightly cold and shake it back and forth on the nut. You can also hit the end face of the nut with a hammer with both hands while shaking back and forth, so that the broken bolt can be removed. 6. After removing the broken bolts, use a suitable screw hammer to process the thread opening in the frame to remove rust and other dirt in the hole. Whether it is a small screw such as an electronic product, or a general screw for furniture appliances, or even a large screw used in engineering, construction, bridges, transportation equipment, aircraft, trams, vehicles, etc., screws occupy a very critical position in these industries.