Articles published in the issue 3, 2018

Identification of transverse defects of the top and the bottom of rails

Keywords: railroad, rails, defects, defectoscopic means, nondestructive check.

Maksimenko Alexander — master, Russian University of Transport (MIIT). E-mail: max3285@mail.ru

Sychev Vyacheslav — D.Sci., professor, Russian University of Transport (MIIT). E-mail: vp@vpm770.ru

Abdurashitov Anatoly — Ph.D., technical expert JSC VNIIZT. E-mail: abdran@yandex.ru

Abstract. The analysis of the detection of rail defects and discusses applications of the use on the road network of eddy current flaw detectors to control the surface rolling fatigue cracks, negative result, which will be followed by additional abrasing of the rail head with the aim of extending their service life.

Rails production technology reserves

Keywords: rails, differential thermal hardening, chemical composition, mechanical properties, microstructure, wear resistance.

Polevoy Egor — JSC «EVRAZ ZSMK» Deputy Head of Department for Research and Development of Normative Technical Documentation. E-mail: Egor.Polevoj@evraz.com

Yunin Gennady — Evraz plc., Adviser on the technology of production of rail products. E-mail: Gennady.Yunin@evraz.com

Golovatenko Alexey — Ph.D., JSC «EVRAZ ZSMK», Director for Rail production.

E-mail: Alexey.Golovatenko@evraz.com

Abstract. Starting from 2013, EVRAZ ZSMK JSC delivers differently thermally strengthened railway rails to the network of JSCo Russian Railways. In the article features of qualitative characteristics of new categories of rails, the problems revealed at the initial period of their operation, as well as measures aimed at their elimination are considered. It is shown that in order to increase the service life of rails, complex efforts are needed to improve the quality of rails and their operation.

Creating a high-performance material for a ballast layer railway track

Keywords: ballast layer, polymer material, strength, durability.

Solovyova Valentina — D.Sci., Professor of Department of Engineering Chemistry and Natural Sciences, Emperor Alexander I St. Petersburg State Transport University (PGUPS). E-mail: soloviova-pgups@mail.ru

Kondratov Valeriy — Ph.D., associate professor of «Bridges» department, Emperor Alexander I St. Petersburg State Transport University (PGUPS). E-mail: soloviova-pgups@mail.ru

Stepanova Irina — Ph.D., associate professor of «Bridges» department, Emperor Alexander I St. Petersburg State Transport University (PGUPS). E-mail: ivstepanova88@ mail.ru

Abu-Khasan Makhmud — D.Sci., Professor of Department of Engineering Chemistry and Natural Sciences, Emperor Alexander I St. Petersburg State Transport University (PGUPS). E-mail: pgups1967@mail.ru

Abstract. The ballast layer element of the upper structure of railway track — it provides vertical and horizontal stability under the influence of train loads and varying temperatures. As a base material for a ballast layer of gravel is used, corresponding to the technical documentation requirements. The purpose of research — to improve the performance characteristics of the ballast layer to reduce clogging and moisture ballast, reduce or eliminate the emission of rubble from the ballast layer to reduce the amount of work on the current content. For high performance, it is proposed polymer-cement material, a modified organo-mineral composition containing nanoparticles. The developed material is characterized by a high elasticity, crack resistance, does not lose its properties under the action of the train load, resistant to chemical materials (oil, grease, acids), is not destroyed during the operation in a temperature range from + 50 to -60 °C.

Testing large-scale models, made from rubble and develop a polymer-modified cement material showed that the tensile strength of the associated ballast in the 28 days of 18.0—20.0 MPa, which is about 30 times higher than the design pressure of the sleepers on the ballast, and durability associated ballast at two million cycles without fatigue damage is provided a composite material sample onto at a pressure 4—5 times higher than the possible pressure of sleepers on the ballast train load.

Application Of Kgt-4rs In The Process Replacing inventory rails with rail lashes

Keywords: rail lash, backhoe loader, KGT-4RS, inventory rails, rail change.

Korsakov Andrey — chief engineer of Track and track machines Department of Infrastructure design office of Russian Railways. E-mail: ankor20031@yandex.ru

Fedasov Dmitry — lead designer of Track and track machines Department of Infrastructure design office of Russian Railways. E-mail: fedasovds@gmail.com

Grinchar Nikolay — D.Sci., professor of the department «Railroad, construction machines and robotic systems», Russian university of transport. E-mail : nggrin@yandex.ru

Chalova Margarita — Ph.D., associate professor of the department «Railroad, construction machines and robotic systems», Russian university of transport. E-mail: margarita_chalova@mail.ru

Abstract. The article considers the possibility of using the KGT-4RS excavator for work on the replacement of rail lashings. The scheme of replacement of rail lashes and transfer of efforts is presented. Calculations was made.

Self-propelled snow-removing trains

Keywords: self-propelled snow removal train, design features, SM-6, PSS-1 and PSS-1K trains.

Danilin Vladimir — lecturer of the Kaluga division of Moscow training center of the professional qualifications, the structural unit of the Moscow Railway, a branch of JSC «RZD».

E-mail: danilin.vladimir2016@yandex.ru

Annotation. The article discusses the history of self-propelled snowplow trains, a brief analysis of the design features of existing trains of this type and the concept of their development in the near future.