Institute of Metal Technology  
212030 Mogilev, Bialynitskaga-Biruli Str. 11

Technology for the production of antifriction silumin as a replacement for antifriction bronze









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Alena Patuk
+375 22 264 0699
The Institute of Metal Technology offers consumers a technology for the production of antifriction silumin as a replacement for antifriction bronze under a commercial agreement with technical assistance or a license agreement and is looking for partners to conclude a technical cooperation agreement.
Antifriction silumin (AC) is a light and wear-resistant aluminum-based alloy with high mechanical and anti-friction properties. AS in terms of friction wear resistance is not inferior to the most common Al-Fe bronzes (BrAZh9-4, etc.) and Pb-Zn-Sn bronzes (BrOTsS5-5-5, etc.) and can replace them in friction units (worm wheels, plain bearings , bushings).

A technology has been developed for manufacturing blanks from AS by casting with an increased solidification rate. This makes it possible to obtain workpieces with a diameter of up to 200 mm with a highly dispersed microstructure without the use of modifying ligatures and fluxes. Subsequent heat treatment in a special accelerated mode improves the tribotechnical properties of AS blanks. The obtained workpieces from AS, manufactured by the proposed technology, have an inverted microstructure with globular silicon crystals with a dispersion of 2..4 μm. Solid and hollow billets from AS are produced by continuous horizontal, cyclic and centrifugal casting methods. Methods for obtaining workpieces from AS are quite simple, productive and do not involve the introduction of expensive alloying elements.

The Institute of Technology of Metals can produce the following AS billets:
- solid cut-to-length cylindrical billets in diameters up to 200 mm and heights up to 150 mm;
- hollow billets with outer diameters from 90 to 200 mm;
-continuously cast bars with diameters from 40 to 80 mm.
Technical parameters of antifriction silumin billets:
- hardness - 125÷140 НВ;
- tensile strength - 350÷450 MPa;
- elongation - 4÷8 %;
- density - 2700 kg/m3.

Technical parameters   БрАЖ 9-4
Antifriction silumin
 Material's density, kg/m3  7500  2700
 Comparative wear resistance 1  4÷6
 Mass of a billet (Ø100mm, length 100 mm), kg   5.9 2.2
 Cost of a billet (Ø100mm, length 100 mm), $ USD  59  26.4

Mechanical properties of AS billets are not worse than those of the bronze ones and their antifriction properties exceed analogous of the latter 4 - 6 fold. Cost and mass of AS billets are less than those of Al-Fe and Pb-Zn-Sn bronze billets by factors of 2÷2.5 and 2.5÷3, respectively.

Advantages and Innovations
An innovative aspect is the technology of casting Al-Si alloys with globular silicon crystals with a dispersion of 4..6 μm, evenly distributed in an aluminum matrix, developed at the State Scientific Institution "ITM NAS of Belarus" without the use of modifiers. Thanks to this microstructure, the obtained workpieces from AS are superior in mechanical and antifriction properties to those from Al-Fe bronzes and Pb-Zn-Sn bronzes.

Worm and gear wheels made of AS in terms of mechanical properties are not inferior to similar ones made of bronze, and in terms of antifriction, they surpass them by 4..6 times.

In terms of mechanical properties, blanks made of AS are not inferior to similar ones made of bronze, and in terms of antifriction properties, they surpass them by 4..6 times. Billets from AS are cheaper than similar bronzes from Al-Fe and Pb-Zn-Sn by 2..2.5 times, and their weight is 2.5..3 times lower.
Stage of development
Already on the market
Comments regarding stage of development
At present, billets from AS have been introduced into production and are supplied to the enterprises of the Republic of Belarus: JSC "Plant" Optic "" (Lida), JSC "Belshina" (Bobruisk), RUPP "Machine-tool plant" Krasny Borets "" (B. Orsha), OAO Bobruiskselmash (Bobruisk), Production Association Gomselmash (Gomel), VS-Tekhnika (Polotsk), Transmaster (Mogilev) and Novaeks Plus (Mogilev), etc.
Funding source
State budged
IPR status
Exclusive rights
Patents granted
Secret know-how
Comments regarding IPS status
Patent of the Republic of Belarus dated December 30, 2013 No. 17697
Patent of the Russian Federation dated January 20, 2014 No. 2504595
Obtained decisions of granting titles of protection for subjects of industrial property:
1. Invention а20111530 of 16.05.2013, Aluminum-Based Antifriction Alloy. V.Ju. Stetsenko, E.I. Marukovich, A.I. Rivkin
2. Invention 2012119330 (RU) of 16.08.2013, Aluminum-Based Antifriction Alloy. V.Ju. Stetsenko, E.I. Marukovich.
Sector group
Aeronautics, Space and Dual-Use Technologies
Maritime Industry and Services

Organization information

R&D institution
Year established
NACE keywords
C.24.10 - Manufacture of basic iron and steel and of ferro-alloys
C.25.61 - Treatment and coating of metals
C.25.99 - Manufacture of other fabricated metal products n.e.c.
M.72.19 - Other research and experimental development on natural sciences and engineering
M.74.90 - Other professional, scientific and technical activities n.e.c.
Turnover (in EUR)
Already engaged in transnational cooperation
Additional comments
- Development of theoretical foundations for controlling the processes of formation of the structure and properties of metals and alloys during their crystallization and solidification;
- Thermal physics and hydrodynamics of special types of casting;
- Creation of new materials and resource-saving technological processes for their production, processing and hardening.

The results of fundamental research of the institute are presented in scientific publications and are used by:
- when creating environmentally friendly resource-saving technologies for continuous casting of ingots from ferrous and non-ferrous alloys;
- development of new cast, including bimetallic, materials with high consumer properties (strength, ductility, density);
- development of wear-resistant composites based on carbon, including those with a gradient of physical and mechanical properties.

The Institute develops, manufactures, supplies, assembles and maintains equipment for:
- continuous casting of ferrous and non-ferrous metals;
- electroslag casting of blanks,
- including bimetallic ones;
- centrifugal casting of bimetals.

The Institute has developed and introduced high-performance, resource-saving, environmentally friendly technologies:
- continuous horizontal casting from cast iron and alloys based on copper and aluminum;
- continuous-cyclic freezing casting of cast-iron blanks of cylinder liners for engines and pneumatic compressors, piston and sealing rings for various purposes;
- continuous casting of reinforced copper chloride tape for water-activated power sources into a roller mold;
- manufacturing by centrifugal and electroslag casting methods of bimetallic castings with an extended service life;
- casting of high-quality blanks of zinc anodes for electroplating production from their waste;
- obtaining blanks of aluminum-silicon alloys with nanostructured silicon by casting by hardening;
- production of lead tape by the combined method of casting and rolling in a roll mould;
- production of cast parts from wear-resistant cast irons.
Languages spoken

Information about partnership

Type of partnership considered
Commercial agreement with technical assistance
License agreement
Technical cooperation agreement
Type and role of partner sought
Customers interested in purshasing the technology for the production of antifriction silumin as a replacement for antifriction bronze under a commercial agreement with technical assistance or a license agreement.

Partners interested in joint activities in the field of improving the technology for the production of antifriction silumin as a replacement for antifriction bronze on the basis of a technical cooperation agreement.
Type and size of partner sought
> 500 MNE
> 500
SME 51-250
SME 11-50
SME <= 10
R&D Institution
Sole proprietor


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