Abstract: This invention relates to the building art, and more particularly to blocks for the construction of buildings, structures, and hardscaping items, and to a method for assembling building blocks without using mortar. A building block, configured as a parallelepiped, comprises three pairs of opposing faces, including four lateral faces and two faces constituting an upper and a lower bases, each of the faces including a plurality of elements constituting projections and recesses, wherein each of the elements is shaped as a regular pyramid with rounded edges, and the pyramid vertex angle between two opposing faces is within the range from 90 to 179.9 degrees.

Abstract: A novel freight car truck bolster comprising a top member with a center bowl and support shelves for side bearers, a bottom member with bearing surfaces for swing suspension springing elements, going into diagonal tension members, side walls joining the top and bottom members, vertical longitudinal ribs located between the top and bottom members with their thickness increased in the center bowl area, pockets to install friction wedges. The bottom member has increased thickness in the transition areas of the bearing surfaces into the diagonal tension members, and the vertical ribs have thickness increased at the top of the center bowl area, the rounded transitions of the sloping walls into the bottom member bearing surfaces have a radius exceeding the radius of the rounded transitions of the vertical walls into the said bearing surfaces.

Abstract: Disclosed is structural low-alloy manganese cast steel having increased hardness and wear resistance, and an article made therefrom. In particular, after carrying out conventional bulk hardening followed by tempering, the disclosed steel has hardness of approximately 418 to 512 HB and is suitable for use in railway engineering, in particular for manufacturing parts of freight car trucks such as a friction wedge. Due to improved hardness and wear resistance of the parts made of the steel according to the present invention, an increase in inter-repair service life, in particular, of the friction wedge/friction plate friction pair is provided without a significant increase in cost for the parts.

Abstract: This invention relates to the building art, and more particularly to blocks for the construction of buildings, structures, and hardscaping items, and to a method for assembling building blocks without using mortar. A building block, configured as a parallelepiped, comprises three pairs of opposing faces, including four lateral faces and two faces constituting an upper and a lower bases, each of the faces including a plurality of elements constituting projections and recesses, wherein each of the elements is shaped as a regular pyramid with rounded edges, and the pyramid vertex angle between two opposing faces is within the range from 90 to 179.9 degrees.

Abstract: The invention relates to the field of metallurgy, in particular to the methods for heat treatment of railway rolling stock parts, specifically railway rolling stock unit center plate. The center plate strengthening device contains a power coil and a sprayer, the power coil being implemented as turnable against the center plate central axis and containing a tube with spray cooling openings. The method for railway rolling stock unit center plate strengthening is performed by progressive induction hardening with simultaneous liquid cooling while rotating the center plate strengthening device 360° around the central axis where the center plate treated surfaces undergo induction heating, spray cooling immediately after the heating, and low-temperature volume tempering with a dwelling period.

Abstract: The invention relates to the field of heat treatment of metals and may be used for hardening the railway transport automatic coupler parts. The hardening method includes induction heating of the automatic coupler and its subsequent cooling. The induction heating is performed within the automatic coupler part working surface area. The heated surface is cooled by water fed through openings in the coil body.

Abstract: The invention relates to metal industry and more particularly to alloy for producing steel wheels, as well as to steel wheels made from such alloy for railway transport. The steel comprises the following components, in % wt.: from 0.45% wt. to 0.60% wt. of carbon, from 0.38% wt. to 0.50% wt. of silicon, from 0.80% wt. to 1.00% wt. of manganese, up to 0.15% % wt. of vanadium, from 0.80% wt. to 1.00% wt. of chromium, up to 0.02% wt. of phosphorus, up to 0.015% wt. of sulfur, up to 0.3% wt. of copper, up to 0.25% wt. of nickel, up to 0.04% wt. of aluminum, a balance of iron. The claimed steel alloy for use in producing railway wheels, either by metal working process or by casting methods, has improved mechanical and operational properties.

Abstract: A novel freight car truck bolster comprising a top member with a center bowl and support shelves for side bearers, a bottom member with bearing surfaces for swing suspension springing elements, going into diagonal tension members, side walls joining the top and bottom members, vertical longitudinal ribs located between the top and bottom members with their thickness increased in the center bowl area, pockets to install friction wedges. The bottom member has increased thickness in the transition areas of the bearing surfaces into the diagonal tension members, and the vertical ribs have thickness increased at the top of the center bowl area, the rounded transitions of the sloping walls into the bottom member bearing surfaces have a radius exceeding the radius of the rounded transitions of the vertical walls into the said bearing surfaces.

Abstract: The present utility model relates to design of open wagons used for transporting cargo that does not require protection from atmospheric precipitation. Disclosed is a railway car comprising at least two bodies supported by carriages, each body comprising a frame, two side walls and two end walls. Said at least two bodies are sequentially coupled to each other by means of at least one joint assembly, wherein each body is supported by two carriages, and wherein bodies adjacent to each joint assembly are supported by one common carriage. The distance between the closest points of mutually facing end walls of the neighboring bodies of said at least two bodies arranged on a straight track section is less than 800 mm. The technical result lies in increase of useable volume of the space between sequentially arranged railway car bodies and decrease of empty weight-to-carrying capacity ratio of the railway car.

Abstract: A tank car comprises at least two sequentially arranged tanks, connected by a joint assembly and supported at the joint assembly by a common carnage. The distance between the closest points of the two sequentially arranged tanks of the tank car on a straight rail track section is less than 1000 mm. The invention provides increased effective volume of a tank car achieved by decreasing the distance between neighboring tanks.