부산대학교 도서관

The article presents the results of studying the choice of temperature-time and energy-force parameters in flash butt welding (FBW) of the core of railway crossings (110G13L steel) with rail steel (K76F) through an intermediate chrome-nickel austenitic insert (08Kh18N10T). Using an algorithm of numerical solution of the three-dimensional heat conduction equation under the initial and boundary conditions corresponding to the real conditions of welding of the specimens, thermal cycles in FBW of K76F steel with 08Kh18N10T austenitic steel and 110G13L steel with 08Kh18N10T austenitic steel and temperature distribution in welded joints (in the heat-affected zone for both steels) were obtained. Ranges of varying the main technological parameters of the FBW process have been determined, in which during flashing of rails from K76F, 110G13L, and 08Kh18N10T steels, their uniform heating across the cross-section and length is provided, sufficient for achieving deformation to the specified extent during upsetting. 13 Ref., 4 Tabl., 11 Fig. [ABSTRACT FROM AUTHOR]