NPO "Center" offers consumers a technology for obtaining high-quality cubic crushed stone from dense rocks for the ballast layer of a railway track under a commercial agreement with technical assistance, a crushing and screening complex for its implementation under a manufacturing agreement and is looking for partners to conclude a technical cooperation agreement.

The proposed technology and the crushing and screening complex for its implementation make it possible to obtain cubic-shaped railway crushed stone with a fraction of 25–60 mm with a flakiness of 2–7%, and use it to form the ballast layer of the railway track.

The crushing and screening complex allows to obtain cube-shaped crushed stone, which makes it possible to increase their durability, resistance to precipitation, improve drainage, elastic and electrical insulation properties during the construction of any types of railways (including high-speed ones).

* obtaining cube-shaped crushed stone of group I according to GOST 7392–2002 for the ballast layer of railways, which is not currently produced in the CIS;
* the possibility of crushing the material of any strength;
* the flakiness of the finished material is usually 2-7%, which corresponds to the crushed stone of group I according to GOST 7392-2002 (crushed stone for the ballast layer of the railway track);
* crushed stone strength is 10–15% higher than the strength of the original material;
* dust content of fractions of the finished product does not exceed 1%;
* reduction of environmental impact on the environment due to partial processing of crushing screenings (fraction 0–5 mm) into commercial sand fractions;
* reduction of capital costs for the entire crushing process due to the use of a high-performance centrifugal impact crusher with increased feed size.

The production base of JSC "NPO Center", equipped with modern equipment, makes it possible to perform almost all types of metalworking, shot blasting, high-quality painting, ensures the manufacture of large-sized structures of increased complexity, crushing and screening, medical equipment, attractions, technological lines, complexes, non-standardized equipment. The company provides a full range of services related to the use of equipment and technologies.

The presence of modern universal CNC milling machines DMU -60 T2 and a 5-coordinate machining center FUQ 150-VR / 10 with a working stroke along the X, Y, Z axes of 9000x1500x2000 mm and a positioning accuracy of 20 microns makes it possible to manufacture high-precision parts, including large-sized, by milling various surfaces, drilling, boring, threading.

Machine MS MTT 1600, machines TRK 80, W100, 2H637G F1 provide the production of units, mechanisms and medium-sized parts weighing up to 20,000 kg.

The enterprise has such unique technological equipment as lathes 1L532, 1540F1, which are capable of processing large parts with a diameter of up to 4 m, a height of up to 2 m and a weight of up to 60,000 kg. sheet bending presses CNC HAP 4100-160 with CNC, IA 1434, IB 2424A for bending and rolling metal sheets up to 25 mm thick and up to 5000 mm wide.

Welding production is equipped with modern energy-saving welding equipment operating in a pulsed mode, which saves energy and ensures the performance of high-quality welded joints. The enterprise has a mechanized complex for automatic welding and surfacing in shielding gases RTK IRB 1600-6/1.45, which allows to reduce the labor intensity of surfacing with a wear-resistant coating by 50% and increase the durability of products during operation by more than 30%, as well as 30 welding stations certified according to DIN 188000-7 class E.

An automated plasma cutting complex created by the enterprise for automated figured and linear cutting of sheet metal from corrosion-resistant, ferrous and non-ferrous metals with high productivity and guaranteed cut quality (thickness of the cut metal: plasma - 0.5-80 mm, autogenous - 20-250 mm ) allows you to reduce the material consumption, energy intensity of products, significantly reduce labor costs in its production through the use of rational automated cutting of metal, the removal of additional machining from the technological process and manual gas cutting operations.

The waterjet cutting complex KGR-01 manufactured by JSC "NPO Center" allows cutting sheet metal, non-conductive materials of various densities (from granite to foam rubber) with high productivity and guaranteed cut quality.

Balancing machine mod. MS 9717 DMR allows you to balance parts weighing up to 1000 kg, with an outer diameter of up to 1800 mm.

Radial drilling machine mod. The RFh 100/3000 allows drilling holes up to 170 mm in diameter in workpieces up to 6,000 mm in diameter.

In 2013, the enterprise organized a site for the manufacture of large-sized products weighing up to 32,000 kg.

Consumers interested in purchasing a technology for obtaining high-quality cubic-shaped crushed stone from dense rocks for the ballast layer of a railway track under a commercial agreement with technical assistance and purchasing a crushing and screening complex for its implementation under a manufacturing agreement.

Partners interested in developing the technology for obtaining high-quality cubic crushed stone from dense rocks for the ballast layer of the railway track and improving the crushing and screening complex for its implementation under a technical cooperation agreement.