1. It takes a lot of time to remove screws by hand, so relevant tools are needed. For example, a hammer, screwdriver, or screwdriver are needed. First, heat the local area and carve a small hole on the broken surface. Insert a screwdriver into the small hole and then use a hammer to gradually break it out.
2. You can also use a hammer and chisel to work together, first make a small hole on the exterior wall, clip the chisel into this small hole, and use the hammer to gradually break it out.
3. It is also possible to weld the nut and broken bolt together using pliers, including welding the nut. By turning the bolt with a wrench, the screw can be removed.
4. There is a very useful tool, a screw extractor. First, smash a small hole, and then use an electric drill to drill the hole. With the help of a broken wire extractor, the screw can be directly removed.