It is shown that melting and casting of cast iron with flaky graphite are the complex physical and chemical nanostructural processes. The majorrole in these processis played by the centers of crystallization of dendrites of graphite, graphite nanocrystals, the dissolved and adsorbed oxygen. The modifying ligature of FS75 is used to decrease concentration of the adsorbed oxygen and to fusion enrichment by the centers of crystallization of dendrites of graphite. 

The composition, structure, methods of receipt of ultradisperse materials (UDM) and the prospect of their application in engineering procedures of foundry production are considered. Positive influence of UDM when entering in fusion on structure and properties of the gray cast iron intended for production of castings of motor group is established. 

The influence of the complex modifier by chemical – active and surface-active additives of gray cast iron on the size of chill and on the width of molted iron zone was researched. The width of a chill zone and molted iron zones were measured at chank ends of various diameter cores. The cores were casted on a massive steel plate and also in standard chill tests. It was established that additional adding of surface-active bismuth in structure of various graphitizing modifiers promoted to reduce the width a chill zone and molted iron zones. It was established that the complex modifiers consisting of chemical – active and surfaceactive components are effective in fight with chill in cast iron castings and can be recommended for application in foundry shops of the entities of a machine-building profile for production of high-quality castings. 

The mathematical models of the electrical resistivity of ESR slag dependence on their composition and temperature are developed. The calculated models are tested for adequacy and can be used in engineering calculations and computer programs, APCS, simulation models and computer programs that permit quickly and accurately determine the parameters of slag in their composition and temperature, as well as to select the composition of slag for the specified parameters. 

Influence of heat-insulating release coatings on quality of light-alloy wheels is considered. Comparison of properties of the developed compositions and foreign analogues is carried out. Computer simulation of wheel casting by low pressure method in the painted die mould is executed. Results of approbation of the developed composition under the conditions of existing industry are presented. 

Designs of the turn-out core boxes with loose sides are given. Standard designs of elements of the turn-out core boxes with loose sides depending on their sizes are given. Tabular data of the sizes and fasteners of these elements of turn-out core with loose sides according to the existing state standard specifications are provided. Content of the article allows to reduce considerably duration of designing of the turn-out core boxes with loose sides in preparation of new technological processes of cast details production. 

The parameters were selected and the analysis of their compliance to assess the processing complexity of castings was made. A variant of the organization of process design for the castings of varying difficulty, defined on a set of proposed geometrical parameters was proposed. 

A theoretical analysis of the influence of carbon content in the steel and nature of macrostructure on segregation of impurities in the crystallization process were made. It is shown that increase of carbon content and transgranular macrostructure creation degree of segregation is being increased. A comparison of sulfur segregation in the ingot with equiaxial and transgranular structure was carried out and the theoretical points were confirmed. 

The possibilities of parameterization of microstructures such as SHG2, SHG4, SHG6, SHG10, SHG12, SHgd15, SHgd25, SHgd45, SHgd90, SHgd180, SHgd360 according to GOST (State All-union standard) 3443–87 based on the microstructures of cast iron with different diameter spheroidal graphite are shown. It is proposed to use the function of the density distribution of graphite inclusions in size for the classification of cast iron microstructures with spheroidal graphite. It is shown that density function of graphite inclusions can be used as a criterion of classification of microstructures of cast iron with spheroidal graphite, that offers new opportunities for the quantitative analysis of relations «microstructure-property» for cast iron with spheroidal graphite. 

Numerical simulations of the process of obtaining a cast steel of bearing cases were performed for two options of technical processing. Three-dimensional motion dynamics ofsteel was calculated in the gate-casting system, three-dimensional temperature fields and densities in the process of casting were calculated as well. The possibilities of computer simulation were shown in order to find the best technical processing in the foundry production.

The article describes the results of tests of asbestos-free friction materials in the brake pads cranes at scrap yard of OJSC «BSW». The tests were made on cranes of two manufacturers: PJSC «Tribo», Ukraine and the Metal-Polymer Research Institute of National Academy of Sciences of Belarus. The following aspects were defined: requirements for materials, main features of operation; there were shown the characteristic types of wear in materials. 

The article discribes the following types of adjusting rotary equipment such as: balancing in own bearings, on-center alignment and shaft alignment, elimination of soft foot. The vibration alignment is based on the results of vibration diagnostics at production run of OJSC «BSW – Management Company of Holding «BMC». 

The issues of technical and cost efficiency of system of statistical thyristor compensators on the example of the Belarusian steel works are considered. Information on researches of system of power supply of arc-furnace melting shops is provided. The data of the highest harmonicas of the arc steel-melting furnace and ladle furnace are specified. The diagrams of current, voltage, capacities during the operation of the arc steel-melting furnace both with system of thyristor compensators, and without it are provided. 

A proper numerical model of expanding process on a three roll continuous reeling mill was created and number of numerical experiments of the process of tubes rolling were performed. Based on the analysis of the stress-strain state of a rough tubes deformation zone, optimal speed rates of the mandrel providing the decrease in mill rolls and deterioration of mandrel which direct influences on the quality of rough tubes were determined. 

The synergy effect of creation of Belarusian Metallurgical Company holding is described in the article, the analysis of directions of its implementation is provided, the prospects of development of synergy potential are defined. The synergy effect is shown on examples of production of cut knivesforscrap metal forthe entities of holding by other enterprises of holding, production of the grinding forged balls from own metal, testing of bearings of JSC Minsk Bearing Plant at the Belarusian steel work. 

The concept of an integrated indicator of quality of rolled metals, for example bearing steel 1.3520(EN), as a set of properties reflecting the quality of the profile geometry, surface defects, macro and microstructure and mechanical properties was considered. The qualitative evaluation of the achieved quality level, the calculation of the probability of occurrence of defects was made. The methodology of technology management on the basis of statistical relations of the studied quality indicators with parameters of industrial technologies in steelmaking and rolling shops was established. 

The estimation of the impact of the SiC powder in the mode of super-deep penetration (SDP) and subsequent heat treatment on the evolution of the fine structure parameters of aluminum casting alloy Al-12%Si are made. Impulse impact on the alloy provided evolution of its structure at different scales. Thus a massive composite material reinforced with the fiber zones was obtained from aluminum alloy casting. 

The optical effects which appeared on internal defects of optically transparent materials by use of various methods of optical staining, i. e. dark-field illumination and polarized light were researched. It was shown that methods of optical staining support to determine spherical defects under a surface of optically transparent materials. Formation of optical effects on materials defects in dark background are partially determined by design features of microscope objective and it was found out. It was defined that the investigation using polarized light the image formation of spherical defects occurs similar to uniaxial crystal. 

Experimental data of measuring the pulse pressure in axial magnetic-pulse treatment of aluminum-based melt are obtained. Dependences between the electromagnetic pressure on the melt, amplitude and processing parameters such as the amplitude of current in the discharge circuit, the frequency of the discharge current and the distance between the inductor and the melt surface are shown. 

The computer modeling of the strain distribution in the structure of ductile iron with ferrite-pearlite matrix and inclusions of spherical graphite dependence on increasing degree of deformation during direct hot extrusion was researched. Using a software system of finite-element analysis ANSYS the numerical values of the strains at the phase boundaries: ferrite-perlite, graphiteferrite and also inside the graphite inclusions were defined. The analysis of the strain distribution in the investigated structures was performed and local zones of increased strains were discovered. The results of modeling are compared with metallographic analysis and fracture patterns. The obtained results could be used in the prediction of fracture zones in the cast iron products. 

The variety of requirements for friction pairs requires the development of different technologies for the production of tribological materials with reference to the operation modes. Composite materials obtained by the casting technology have been successfully applied for the normalization of the thermomechanical state of the steam turbines. These composites consist of the matrix based on copper alloys reinforced with cast iron granules. Because the structure and properties of cast iron are determined by the conditions of their production studies have been conducted on determination of preparation conditions on grain structure and properties of the synthesized composite material. Using an upgraded unit for production of granules technological regimes were determined providing narrow fractional composition. It has been found that granules formed are characterized with typical microstructure of white cast iron containing perlite and ledeburite. Microhardness of pilot cast iron granules is characterized by high values (from 7450 up to 9450 MPa) and depends on the size of the fraction. Composite materials obtained using experimental granules had a microhardness of the reinforcing cast iron granules about 3500 MPa, and a bronze matrix – 1220 MPa, which is higher than the hardness of the composite material obtained by using the annealed DCL-1granules (2250 MPa). Metal base of experimental granules in the composite material has the structure of perlitic ductile iron with inclusions of ferrite not exceeding 10–15% and set around a flocculent graphite. As a result, the increase of physical-mechanical properties of finished products made of composite material is observed. 

Computer model for simulating piercing process of steel workpiece was developed. Using finite element method the results obtained appropriate to the actual process with a high degree of accuracy. These results can be used when configuring the piercing mills, as well as piercing process optimization.