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What processing is needed after removing the broken stainless steel screw


1. First remove the sludge on the surface of the broken stainless steel screw and use the center blunder 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, pay attention to the hole must be drilled through . After the hole is drilled through, remove the small drill bit and replace it with a drill bit with a diameter of 16 mm, and continue to expand and drill the hole of the broken stainless steel screw.
2. 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 stainless steel screw. Take half of the entire length of the bolt at the beginning of the surfacing. Do not over start the arc when starting the surfacing. Long so as not to burn through the outer wall of the broken bolt. After surfacing to the upper end of the broken bolt, continue to surfacing to form 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 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.
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 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 cool and twist it left and right. 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 threads in the frame to remove the rust and other debris in the holes.

Haiyan Tianqi Fastener Co., Ltd is Square Head Wood Screws Manufacturers and Wood Screws Manufacturers

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