Emperor Alexander I St. Petersburg State Transport University, St. Petersburg, Russia:

R. V. Rahimov, Doctoral Student, е-mail: rakhimovrv@yandex.ru

Tashkent Institute of Railways Engineering, Tashkent, Uzbekistan:
Ya. O. Ruzmetov, Associate Professor, е-mail: yadgor.ruzmetov@yandex.ru

As is known, the economic indicators of any metallurgical process, especially in non-ferrous metallurgy, depend primarily on transportation costs. Transport costs include the delivery of ore from the quarry to the mining and processing plant, and then the delivery of metals to the metallurgical enterprises for the production of semi-finished or finished products. Naturally, the reduction of transportation costs is an important task, which depends on the fleet of wagons of railway companies. The current state and structure of the railway wagons fleet of Uzbekistan, which are currently experiencing a deficit of a serviceable fleet of freight wagons, are analyzed. To replenish the fleet of freight wagons, the wagon-building plants of the Republic of Uzbekistan every year increase their production capacities and also master and launch in mass production new types of freight wagons with an axle load of 23.5 tons. To determine the directions of the wagon fleet development of the Republic of Uzbekistan, the analysis of the existing Russian and foreign freight rolling stock has been carried out. Comparative characteristics of technical and economic parameters of domestic freight wagons and foreign production showed that freight wagons produced by domestic wagon building plants with an axle load of 23.5 tons are inferior in technical and economic parameters to wagons of foreign production, the metal structure of which is made with the use of high-strength steels and aluminum alloys and the load from the axis of the wheel set to the rails is 32–35 tons. Formulated the main proposals on the development and introduction of perspective freight wagons with increased axial load are developed with the use of modern construction materials on the railways of Uzbekistan, the implementation of which will significantly increase the throughput and carrying capacity of railways, reduce maintenance costs and specific fuel and energy resources consumption for traction trains, as well as increase the level of localization of products.

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