If the bolt is rusty and can not be removed by using the screw loosening agent or the hammer with the hand hammer, just consider increasing the rotation force, for example, using a force rod or a 20-pound hammer to shake the wrench handle (the bolt may be Twist in the wire hole). The bolt is broken, and the bolt break is exposed outside the wire hole and tested with a pipe wrench. Pull out the exposed part of the bolt out of the square or two, and turn it off with a wrench. A nut is welded to the section to rotate the trial and disassembly. If the bolt break is located in the wire hole, if the diameter of the broken wire is small, the electrode with the appropriate thickness can be selected, so that the electrode itself is welded to the screw section, the exposed part of the electrode is bent, and the electrode is rotated and tested. It is also possible to weld a thin long rod bolt to the section and turn the bolt to the six sides for trial release. The process of welding repairs the welding of mine parts generally uses manual arc welding, while the manual arc welding process control requirements are strict, no matter the arcing, welding and arcing have strict operating specifications (especially in the welding motor shaft More stringent requirements). Welding defects cannot occur during the welding process, otherwise weak points will be formed and the use of the motor shaft will be affected. Therefore, after selecting the appropriate welding rod, welding machine and welding current, it is also necessary to arrange in the welding sequence (interval symmetrical welding is required. After welding on the circumference of the shaft, the welding should be carried out at the symmetrical position at this point) In order to avoid or reduce the deformation caused by welding; in the process of welding, attention should be paid to heat preservation, and forced cooling cannot be performed; the welding slag on the welding surface should be cleaned in time to reduce the possibility of slag formation. After the welding, the machined motor shaft is machined to meet the needs of actual use, and the surfacing part must be machined to meet the technical requirements of mechanical cooperation. Water-Based Fire Extinguisher,Pure Plant Fire Extinguisher,Wheeled Fire Extinguisher,Security Fire Extinguisher Ningxia Wanhui Import & Export CO.,LTD , https://www.whfireextinguisher.com