Published in Steel in Translation
AbstractTechnologies have been developed and tested for obtaining new types of agglomerated iron ore materials and mono raw materials for blast-furnace smelting, which have the best metallurgical characteristics of agglomerates and pellets. These have an increased content of iron and residual carbon. The use of these materials in blast-furnace prod...
Published in Steel in Translation
AbstractGraphitized steel is a very interesting material due to its high wear resistance, excellent cutability, and good properties at cold forming. Graphitized steel (0.43 wt % of C) of ferrite-and-graphite microstructure is plastically deformed by compression at room temperature using a universal testing machine. The microstructures of the deform...
Published in Steel in Translation
AbstractDispersion-hardening alloy based on the Ni–Cr–Nb–Mo system, which has high elastic characteristics, is used in telemetry and sensors. The presence of intermetallic phases of three modifications coherently associated with the matrix in the material after dispersion hardening was established using scanning electron microscopy (SEM), X-ray dif...
Published in Steel in Translation
AbstractThis article discusses the production of composite material by chip electroslag cladding using non-consumable electrodes. It has been demonstrated that, contrary to conventional discrete additives (shot, cut wire, granules, and others), the final composite material is characterized by complex structural phase composition upon chip cladding,...
Published in Steel in Translation
AbstractIn this paper, we present the results of laboratory studies of the effect of the tempering temperature of hardened rolled structural steel with a carbon content of 0.18–0.20% on changes in the structure, the microstress level and dislocation density, mechanical properties and resistance to cracking in a hydrogen sulfide-containing environme...
Published in Steel in Translation
AbstractThe sintering intensity is one of the important factors determining the technical and economic efficiency of sinter production which provides the blast-furnace process with the main kind of agglomerated raw iron ore. The process parameters of sintering critically influence the sinter burden caking rate. Therefore, the system study of the pr...
Published in Steel in Translation
AbstractAn approach to selecting the optimal composition of multicomponent blast-furnace burden based on a set of mathematical models for predicting change-of-state transformations of iron-ore raw materials, as well as for calculating chemical composition and properties of primary and final products of smelting, is presented. The results of predict...
Published in Steel in Translation
AbstractThe urgent problem regarding the depletion of mineral resources in ferrous metallurgy can be efficiently solved by a complex reuse of man-caused waste products. Such wastes are mostly presented by electric arc furnace (EAF) slag and ladle furnace (LF) slag. These two kinds of slag are not completely utilized. The residues of these slags are...
Published in Steel in Translation
AbstractThis article provides the results of adopting automated monitoring systems designed by the ISI NASU that allow maintaining long-term and energy-saving cast iron production in blast furnaces in Ukraine. The need for adopting these mathematical models is underpinned and the efficiency of their application is shown.
Published in Steel in Translation
AbstractThe main factors governing a mixed effect of nonmetallic inclusions as internal sources of microalloying on local strengthening of steels upon laser treatment are systematized and analyzed. The processes, which govern the nature of the microcomposite zone formation, heterogenization regarding the structure of steel matrix and inclusion–matr...
