1. Inspection when welding nuts are replaced
The inspection method of the replaced high-temperature welding nut is consistent with the installation requirements, and the steel stamp number should be made according to the requirements, and the corresponding original data should be sorted and archived.
2. Rebuild
The reassembly requirements and procedures of the high temperature welded nut are consistent with the installation, but it should be noted that the original length of the bolt should be the length measured during maintenance, not the original length of the bolt during installation. At the same time, due to the inevitable deformation of the cylinder during operation, it should be tightened first from the bolt at the position with the largest gap, and then tightened symmetrically at both ends. The position of the largest gap should be determined by closing the cylinder during maintenance.
