How to remove bolts
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The stainless steel hexagon socket bolt broke into the equipment. How to remove the broken bolt without damaging the original thread? Notice: It has been removed by welding. After welding, the bolt is still not strong enough and cannot be removed.
Use a drill with a small diameter and then shave it out bit by bit.
Make a counter-thread in the center of the broken bolt, add some lubricant when removing it, and test it
1. Use a small chisel to shave it out little by little in reverse direction 2. Use a drill to drill a small hole in the bolt, and then use a screw extractor to take it out (screw extractors are available in the market)
The bolt may be stuck inside due to corrosion. The bolt is M8. Due to corrosion, the material of the bolt has changed and its strength is very poor. How to solve it? The third floor said to make reverse thread, how to do it? Tapping?
Use a drill bit as large as possible to drill into the center of the bolt, and then use a chisel to remove the remaining bolt fragments. Notice: Be sure to center the hole when drilling and do not damage the threads with the drill bit.
In other words, there is enough processing length outside the equipment. You can try grinding it into regular edges and unscrewing it with a wrench.
THANK YOU VERY MUCH!!
It's a stainless steel bolt. It may be chewed. I think I can only use a drill bit to drill slowly from small to large, and finally pull it out.