How to take out a broken screw? Screw processing manufacturers teach you six tricks to take out a broken screw!

In daily life, screws are used in all aspects of our lives, if we are not careful Accidentally broke the screw during screw processing, it is the beginning of the disaster, then the editor will teach you 6 tricks below, no longer afraid of being unable to remove the short screw!

1. First, remove the sludge on the surface of the broken screw, and use the center gun to kill the center of the section. Then install a drill bit with a diameter of 6-8 mm with an electric drill, and drill the hole in the center of the section, paying attention to the hole must be drilled through. After the hole is drilled through, remove the small drill bit, replace it with a drill bit with a diameter of 16 mm, and continue to expand 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 a small and medium current in the drilled hole of the broken bolt, from the inside Carry out surfacing welding outside, and cut off half of the entire length of the bolt at the beginning of surfacing welding. When starting surfacing welding, the arc should not be too long to avoid burning through the outer wall of the broken bolt. After surfacing to the upper end face of the broken bolt, continue surfacing to form a cylinder with a diameter of 14-16 mm and a height of 8-10 mm.

3. After surfacing, hammer the end face with a hammer to make the broken bolt along its axis to produce vibration. Due to the heat generated by the previous arc and the subsequent cooling, coupled with the vibration at this time, there will be loosening between the broken bolt and the thread of the body.

4. Observe carefully, when it is found that there is a small amount of rust leaking from the fracture after tapping, you can take M18 The nut sleeve is placed on the surfacing column head and the two are welded together.

5. After welding, use a torx wrench while it is cool and twist it back and forth on the nut. You can also tap the end face of the nut with a small hand hammer while twisting back and forth, so that the broken bolt can be taken out.

6. After taking out the broken bolt, use a suitable screw hammer to process the thread in the Remove rust and other debris from the hole.

Whether it is the tiny screws of electronic equipment, or the general screws of furniture appliances, or even engineering, construction, bridges , large screws used in transportation equipment, aircraft, trams, automobiles, etc., screws occupy a very important position in these fields.