The problem of increasing the resistance of welded joints of power equipment against local destruction in the conditions of non-stationary mode of high-temperature operation is relevant. In the studies performed, the analysis of the causes and nature of LR was carried out from the standpoint of classical physics of high-temperature deformation and intergrain destruction by the creep mechanism. Most of the test methods developed simulate just such loading conditions. However, the most objective assessment of the susceptibility of the welded joints to LR can be given by the method of testing welded joints under conditions of high-temperature low-frequency low-cycle loading.
The purpose of this work is to increase the efficiency of manufacturing non-standard fasteners. In the course of the work, the technology of friction welding bolts, which ensures the formation of high-quality welded joins, from steels of grades 14X17H2 and 12X18H10T was experimentally investigated and developed.
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