In view of the difficulty of bolt disassembly that frequently occurs during maintenance,based on a large number of domestic and foreign scholars'relevant theoretical studies on the influence of temperature loading on bolt pre-tightening force,this paper proposed a bolt disassembly process based on temperature load.By using the principle of reducing bolt pre-tightening force under temperature load,and disassembling the bolt by heating with arc welding in the type of spot welding,it effectively solved the problems of fastening bolt seizure,adhesion,rust-ing,and the difficulties in disassembly due to serious corrosion of bolt hexagonal head.The method is easy to oper-ate and effectively avoids the disadvantages of the traditional bolt disassembly method.
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