How to take out the high-strength bolt after it is broken? Don't worry, below, the editor will give you the method, friends who don't know it yet, take the time to find out! 1. Start to remove the sludge on the surface of the broken high-strength bolts, use the center gun to kill the center of the cross section, then install a twist drill with a diameter of 6-8mm with a hand drill, and drill a hole at the center hole of the cross section. Note that the hole must be drilled through. After the hole is drilled through, remove the small twist drill bit, replace the twist drill bit with a diameter of 16mm, and expand and drill the hole of the broken screw again. 2. Take welding rods with a diameter of 3.2mm or less, use large, medium and small electric currents in the drilled holes of the broken screws, and carry out surfacing welding from the inside to the outside. Take half of the length of the broken anchor bolts at the slow part of the surfacing welding. Can. When gradually surfacing, the arc should not be too long to avoid burning through the surface of the broken anchor bolt. After surfacing to the inner hole of the broken anchor bolt, a cylinder with a diameter of 14-16mm and a height of 8-10mm is surfacing again. 3. After surfacing, hammer the inner hole with a hammer to disconnect the anchor bolts to cause vibration along its axial direction. Due to the heat generated by the arc before and the subsequent cooling, coupled with the current vibration, the break bolts will loosen between the threads of the device. 4. Carefully observe the high-strength bolts. When it is found that a little rust is exposed from the cracked surface after knocking, you can take the M18 anchor bolt sleeve and weld the two on the top of the surfacing column. 5. After welding, use the torx wrench glove to shake it back and forth, left and right, on the nut. You can also hit the inner hole of the nut with a two-handed hammer while shaking back and forth, so that the anchor bolt can be broken. remove. 6. After removing the broken anchor bolts, use a suitable screw hammer to manufacture the threaded fasteners in the frame to remove rust and other dirt in the holes. Whether it is small screws such as electronic equipment, or general screws for furniture and household appliances, or even large screws used in construction projects, construction projects, roads, bridges, urban transportation equipment, airports, battery cars, cars, etc., screws are used in these fields. All occupy a very important position.