There are many types of screws, whether they are very small screws for eyeglasses or large screws for large-scale heavy electrical engineering. The main purpose is to use high-level industrial products to form a fixed unit. If it is often used, the teeth cannot be closely attached. , If you tighten too hard, the screw head will break off, or if the tooth pattern is not tight and the lock will not meet the conditions of use, it is a quality accuracy problem; How to use screw performance skillfully?
The screw factory shares the following with you: First, remove the sludge on the surface of the broken screw and use the center blaster 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.
Take a welding rod with a diameter of less than 3.2 mm 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 China Chipboard Screws Manufacturers start the arc too long So as not to burn through the outer wall of the broken bolt. After surfacing welding to the upper end surface of the broken bolt, continue to surfacing a cylinder with a diameter of 14-16 mm and a height of 8-10 mm.
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 before and the subsequent cooling plus the vibration at this time, the bolt and the thread of the body will be broken There is looseness between.
Carefully observe. When it is found that there is a trace of rust leaking from the fracture after knocking, you can take the M18 nut and put it on the surfacing stigma and weld the two together. After welding, use a torx wrench to set the nut on the nut while it is still cool and twist it left and right. You can also twist it back and forth while tapping the end face of the nut with a small hand hammer so that the broken bolt can be taken out. After taking out the broken bolts, use a suitable wire hammer to process the threads in the frame to remove the rust in the holes.
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