1. China Nut's welding technology process: work preparation → joint assembly → installation of temporary bolts → installation of high-strength bolts → tightening of high-strength bolts → inspection and inspection.
2. Preparation for welding of finish-rolled nuts: prepare wrenches, temporary bolts, overshoots, wire brushes, etc. The first thing to do is to check the construction torque, that is, to check the torque wrench used, it is necessary to check before the class, and only after the torque is checked Quasi-use. The torque calibration corresponds to a designated person. The length of the hexagonal finish-rolled nut is selected, considering that the steel used in the processing of steel components is usually normal service. Sometimes the material substitutes are mostly large instead of small, and thick instead of thin. Therefore, the total thickness of the connection is increased by 3 to 4 mm. Many, therefore, the length of high-strength bolts and nuts should be selected, usually 2 to 3 buckles should be grown after tightening, and then a set of spare parts should be equipped according to the request.
3. Assembling of Bolt Factory's finishing-rolled nuts: sort out the conflicting surface. If the plate is not flat, it should be assembled after the flatness meets the requirements. There should be no paint or sludge on the conflict surface, and there should be no burrs around the hole. The conflict surface should be cleaned with a wire brush, and the brush direction should be perpendicular to the direction of the conflict force. When in doubt about the installation hole, do not use oxygen-acetylene to ream the hole. Use a reaming drill to ream the hole. After reaming, rearrange the burrs around the hole.