COMPARATIVE ANALYSIS OF CHARACTERISTICS OF MACRO-AND MICROSTRUCTURE OF ROLLED STEEL SHKH15SG FROM DIFFERENT MANUFACTURERS
The data of bearing steel SHKH15SG macro- (сentral porosity, point inhomogeneity, liquation square) and microstructure (microporosity, carbide liquation, structural banding, depth of decarburized layer) comparative analysis are presented. It was established that the steel SHKH15SG-SH of electroslag remelting produced by PJSC EMZ "Dneprospetsstal" is characterized by the best macro-and microstructure in comparison with the direct reduction steel SHKH15SG-PV produced by JSC "OEMK" and vacuumed steel SHX15SG-V produced by PJSC "Nadezhinsky MZ". According to the same parameters, SHKH15SG-PV steel is comparable or better than vacuum steel produced by PJSC "Nadezhinsky MZ" SHKH15SG-V.