China Nut Is Practical

  • With the gradual transformation of the hardware market to the Internet, self-locking nuts have also received more and more attention from netizens. But people only know that self-locking nuts are used in many ways, but they don't know how to install self-locking nuts. In order to make the automatic nut work better, we should pay attention to some details when installing. Let's follow Bolt Factory to learn how to cleverly install the self-locking nut.
      Self-locking nut installation
    1. First, remove the sludge on the surface of the broken self-locking nut. Use the center to kill the center of the section. Then use an electric drill to install a 6-8 mm diameter drill to drill the hole at the center of the section. Note that the hole must be drilled through. . After the hole is drilled, remove the small drill bit and replace it with a drill bit with a diameter of 16 mm, and continue to enlarge and drill the hole of the broken bolt.
    2. Take a welding rod with a diameter of 3.2 mm or less and use small and medium current to carry out surfacing from the inside to the outside of the hole of the broken bolt. Take half of the entire length of the bolt at the beginning of the surfacing. When starting the surfacing, do not start the arc too long So as not to burn through the outer wall of the broken bolt. After welding to the upper end of the broken bolt, continue to weld a cylinder with a diameter of 14-16 mm and a height of 8-10 mm.
    3. After the surfacing is completed, hammer the end face with a hand hammer to cause the broken bolt to vibrate along its axial direction. Due to the heat generated by the arc and the subsequent cooling plus the vibration at this time, the bolt and the thread of the body will be broken Loose between.
      4. Observe carefully. When it is found that there is a trace of rust leaking from the fracture after knocking, you can take the M18 self-locking nut and put it on the surfacing stigma and weld the two together.
      5. After welding, use a torx wrench to set the nut on the nut while it is still hot. You can also twist it back and forth while tapping the end of the nut with a small hand hammer to take out the broken bolt.
      6. After taking out the broken bolts, use a suitable wire hammer to process the threaded buttons in the frame to remove rust and other debris in the holes.
      Self-locking nut structure, the diagonal angle between the six narrow grooves on the top and the hexagonal nut is 100. These six grooves are different from the general grooves with split pins. They are relatively deep and narrow, mainly for deformation. When tightened according to the specified torque, there is a reaction force P on the bottom plane of the nut, and a bending moment pair is generated to the nut at the same time, so that the upper narrow groove of the nut shrinks and deforms, and the bolt is tightly pinned. The closer the slot on the top of the nut is to the diagonal, the better the self-locking performance. The self-locking torque is determined by the reaction force P on the bearing surface of the lock nut, so the specified torque must be reached when tightening the self-locking nut. Otherwise, the reaction force is too small, and it is easily affected by vibration during operation, resulting in loosening and losing the self-locking effect.
      China Nut is very practical, but it needs to be carefully checked before installation, so that it can play the role of self-locking nut. I believe everyone has a general understanding of the installation of self-locking nuts. Hope this article can help you to install the self-locking nut correctly.