1. First remove the broken screws at the end of the surface of the sludge with a central punch to the center of the section of the die and then with an electric drill loaded with a diameter of 6-8 mm drill in the Section Center punch Hole Drilling, attention hole must be drilled through.
After drilling through the hole, the small drill is removed and replaced with a 16 mm diameter drill, which continues to expand and drill through the hole of the broken bolt. 2.
The electrode with a diameter of less than 3.2 mm is used to take half of the whole length of the bolt by using medium and small current in the drill hole of the broken bolt from inside to outside for surfacing surfacing. The arc should not be too long to prevent the outer wall of the broken bolts from burning. Surfacing to the top of the broken bolts and then continue to heap weld 1 diameter 14-16 mm high 8-10 mm cylinder.
3. After surfacing, hammer the end face with hammer to cause the broken bolt to vibrate along its axis. The heat generated by the arc and subsequent cooling, coupled with the vibration at this time, will make the break bolts and the body's threads loose.
4. Careful observation, when found that a small amount of rust after tapping from the fracture of the leakage of the M18 can be taken out of the nut cover on the surfacing and weld the two together.
5. After the micro-cooling after welding with plum wrench set in the nut around the twist can also twist the edge back and forth with a small hammer tapping nut end so that the broken bolts out. 6. Remove the broken bolts and use the appropriate taps to process the wire buckle inside the rack to remove rust and other debris in the hole.
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