Królicka, Aleksandra Żak, Andrzej Kuziak, Roman Radwański, Krzysztof Ambroziak, Andrzej
Published in
Materials Science-Poland
The joining process of bainitic rails is significant in terms of their industrialization in high-speed and heavy-loaded railways. This paper demonstrates the microstructure changes in the critical zone of the welded joint, which is responsible for the greatest deterioration in mechanical properties. Extensive progress in the decomposition of the re...
Gromov, V. E. Kormyshev, V. E. Ivanov, Yu. F. Yuriev, A. A. Glezer, A. M. Rubannikova, Yu. A.
Published in
Inorganic Materials: Applied Research
AbstractA quantitative comparative analysis of the strengthening mechanisms for the surface layers of rails is carried out. It is based on the regularities in forming structure, phase composition, defective substructure, and properties of differentially hardened 100-m rails at different depths (up to 10 mm) and performed in the rail head along the ...
Markov, A. A. Maksimova, E. A.
Published in
Russian Journal of Nondestructive Testing
AbstractThis research is a continuation of the work aimed at analyzing the parameters of ultrasonic signals during high-speed rail inspection. The analysis of the behavior of the amplitudes of the sequences of bottom signals in the zone most problematic for the continuous-welded track, i.e., the zone of the welded joints of rails, has been carried ...
Markov, A. A. Maximova, E. A.
Published in
Russian Journal of Nondestructive Testing
Abstract—The results of investigating the parameters of ultrasonic signals when increasing rail testing speed presented. Signals from rail bolt holes were selected as test reflectors. It is shown that the holes closest to rail joints are not sounded fully, and signals due to them cannot be used as test reflectors. For a full assessment of the deter...
Dobuzhskaya, A. B. Galitsyn, G. A. Yunin, G. N. Polevoi, E. V. Yunusov, A. M.
Published in
Steel in Translation
AbstractRail steel samples have been tested for abrasive wear and sliding wear. It is shown that the wear resistance of rail steel is mainly determined by the carbon content therein and by the dispersity and structural homogeneity thereof: with increasing carbon content in the rail steel, the wear resistance exhibits an increase due to a decrease i...
kolovrátník, petr
Tato bakalářská práce se zabývá návrhem zařízení pro přesun kolejových vozidel pomocí lana. Cílem je navrhnout a provést kontrolu klíčových částí zařízení a navrhnout jejich uspořádání. Práce obsahuje představení existujících lanových vrátků a jejich komponent, poté následuje vlastní návrh zařízení, který zahrnuje návrh pohonu zařízení včetně převo...
Kozyrev, N. A. Shevchenko, R. A. Usol’tsev, A. A. Prudnikov, A. N.
Published in
Steel in Translation
AbstractIn this paper, we study the effect of welding modes with subsequent isothermal exposure on the quality parameters of the welded joint under laboratory conditions using rail steel samples. Welding of the samples was performed by passing pulses of alternating electric current after welding. Welding was carried out using an MS-2008M resistance...
Smirnov, L. A. Kushnarev, A. V. Dobuzhskaya, A. B. Kirichkov, A. A. Belokurova, E. V.
Published in
Steel in Translation
AbstractThe research results of the effect of small additions of vanadium and nitrogen on the microstructure and mechanical and service properties of high-carbon steels for railway transport are presented. The data on industrial production of metal products from such steels are considered. Medium-carbon bainitic and martensitic steels with a fine s...
Kushnarev, A. V. Smirnov, L. A. Kirichkov, A. A. Dobuzhskaya, A. B. Khlyst, S. V. Kuzmichenko, V. M. Khlyst, I. S. Gontar’, A. V. Belokurova, E. V.
Published in
Steel in Translation
AbstractTEC-DT differential heat hardening technology is developed based on the process of digital control of air humidity by high-efficiency mixing of air flows and the water ejected by it. The wide-range cooling rate control (2–14°C/s) makes it possible to heat hardened rails made of different steels, such as carbon steels, with a wide range of c...
Kozyrev, N. A. Shevchenko, R. A. Usol’tsev, A. A. Prudnikov, A. N. Bashchenko, L. P.
Published in
Steel in Translation
AbstractThe article describes the welding process study with the subsequent control of cooling for full-profile rail joints, produced by passing alternating electric current pulses after welding. The welding mode influence on the welded joint quality was investigated. Welding was carried out on a resistance butt welding machine MCP-6301 in conditio...
