In article the main world tendencies of development of the production technology of sandy cores and value of this production in complex technology of manufacture of castings are considered. It is established that the most rational way of production technically and economically is manufacture of wafer sandy cores using the Cold-box-amin technology. Scientific, technical, technological and economic aspects of modernization of foundry production of JSC MTZ with complete transition to production of sandy cores on the resource-saving Cold-box-amin technology are provided. The main distinctive feature of this reequipment – all planned works are based on the domestic technological developments and the equipment created in the cooperation by specialists of JSC BELNIILIT and JSC MTZ. Within GNTP essential support to the provided works was given by the state.

The article presents the results of studies of gas movement and heat and mass transfer processes in the rotary tilting furnace (RTF) at the heat treatment of disperse materials. The study was performed through computer modeling using software packages ANSYS CFX and Solid Works Flow Simulation. The results were used to design RTF with different capacity and application and helped to improve their technical and economic characteristics.

It is shown that melting and molding of the eutectic silumin are difficult physical and chemical nanostructural processes. In them the major role is played by the centers of crystallization of the eutectic dendrites of aluminum, aluminum nanocrystals, the dissolved and adsorbed hydrogen. The role of the modifying gumboil is reduced to formation of a sodium emulsion. On it there is an allocation of vials of hydrogen at the eutectic crystallization. It promotes a branching of dendrites and receiving the modified silumin microstructure.

The main difficulties of the modern theory of crystallization of metal fusion are imperfect ideas of a structure of fusions, processes of origin and growth of crystals and influence of nonmetallic particles and the dissolved gases. In order to overcome these difficulties it is necessary to assume: fusions consist of stable nanocrystals and atomic unstructured zones; the centers of crystallization of phases are formed of nanocrystals of these phases; the basic construction elements of crystals are not atoms, but nanocrystals; nonmetallic particles play a supporting role in the course of crystallization; the dissolved gases exert direct impact on formation of crystals and their morphology.

The main problems of silumin’ moulding are connected with insufficient modifying of casting structure, their considerable inclination to gas porosity, difficult to remove nonmetallic inclusions and these features are shown in the article. Protection of liquid silumin from influence of the air atmosphere; use of crucibles from aluminum oxide; refinement of fusion from nonmetallic inclusions and application of the accelerated hydrogen hardening of castings were used to solve these problems, as it is shown in the article.

The technological process of receiving figurine castings of a heat resisting alloy HN57KTVYuMBL brand developed and tested by authors a combined method of oflost-wax casting (pouring gate system) and of consumable expanded polystyrene pattern in shell forms kompleks modify ceramics promotes decrease in crack formation of forms at the expense of correctly picked up temperature and time mode of annealing of a form with model. Besides this method allows to receive figurine castings with minimization of an allowance for machining of details, to increase their geometrical accuracy and to lower a roughness.

The review deals with the design flask tooling and patterns for effective hardening sand mixture in the vacuum molding (V-Process), and molding on a one-off patterns (Lost Foam Casting). Sealing and evacuating sand mixture – two major factors influence the strength of the casting mold and casting quality, management practices which will enable to improve the casting process.

Melting and crystallization of metals are equilibrium thermodynamic processes. As the main structural units of dendrites serve construction nanocrystals which are formed of elementary nanocrystals. The main mechanisms of processes of melting and crystallization of metals are disintegration of dendrites on nanocrystals and formation of dendrites from nanocrystals. On process of crystallization and morphology of dendrites the great influence is exerted by the hardening speed, surface-active elements and the dissolved gases.

It is shown that melting and molding of steel are difficult physical and chemical nanostructural processes. In them the major role is played by the centers of crystallization of dendrites of austenite, austenite nanocrystals, the dissolved and adsorbed oxygen. The role of modifiers of magnesium and calcium is reduced to decrease in concentration of the adsorbed oxygen and an intensification of processes of coagulation of nanocrystals of austenite in the centers of crystallization of dendrites of austenite.

Testing the slide shutters of a new design of «book» type and refractory materials for shatters from a number of suppliers are carried out.

In given article main attention is spared co-ordinations force in area of quality management to organizations, are considered possible ways of the achievement sinergistic effect from co-ordination effort.

The quality of furnace charge in an electric arc melting furnace to a large extend determines the efficiency of melting. With a tendency of increase of light scrap with a high content of non-iron impurities scrap fine crushing can increase the metallurgical value of scrap and improve technical and economic parameters of electric arc furnace operation.

The article describes influence of uncontrollable disturbances for output parameters of converting smelting. You also find numerical values of impact impurity of scrap, falling mixer slag with cast iron, limestone instead of lime and water from cooled elements on decarbonization, bathtub temperature and slag basicity. Created a control algorithm with the influence of uncontrolled disturbance.

The research conducted in laboratory of metallurgical science by which the factors exerting impact on hardenability of steel microalloyed by boron were analysed. The research was made because the implementation of this process in mass production is connected with the certain difficulties. The conducted researches have allowed to draw a conclusion that changing content of various chemical elements, such as nitrogen, boron, the titan and aluminum in steel containing boron, produced by JSC «BSW – Management Company of Holding «BMC» at the stage of preparation of chart flowsheet make it possible to predict terms of hardenability of the final product.

The correlation of mechanical hardening to the degree of dispersion of the perlite (interlamellar spacings) and strength indices of rolled steel diameter of 6.5 mm made of steel grade C72D is showed. Using the method of hydrostatic weighing and X-ray analysis it was established that to increase the degree of the deformability of high-carbon rolled during hardware production is the most preferred way is high-temperature unscramble of rolled coils with following process of controlled accelerated air cooling. The results of the research could serve as a basis for the creation of an additional process of assessing the quality of cold wire by non-destructive testing.

Influence of austenite grain size of chrome-molybdenum-vanadium steel on formation of structure at continuous cooling has been studied. It is shown, that at the coarsen of grain with increasing temperature of austenitization from 850 till 1050°С stability of the supercooled austenite in structure of chrome-molybdenum-vanadium steel is increased, that is promoted decrease in critical quenching rate.

Results of studies of the kinetics of changes in actual grains during technological process at different stages of the manufacture of parts with the use of a universal metallographic etchant to identify borders of valid grains in rolling and stamping in carburizing layers and core parts made of alloy structure steel grades are presented.

The article analyzes the existing artificial reflectors are used to adjust the sensitivity of the ultrasonic flaw detectors. Noting their shortcomings, mainly related to the accuracy of manufacture. As an alternative, the angular cylindrical reflector. The influence of manufacturing error on the amplitude of the reflected signal. On the basis of the result proposed by the sensitivity setting method that eliminates the main drawback.

The scheme of strip’s rolling with variable thickness and with a bend of a trailer site is offered. Conditions of strip’s rolling on the offered scheme at production of a brake shoe pin of railway transport are defined. Expressions for calculation of torsion torque on the leader and a permission rolls are defined. Equations for calculation of a forward tension and the pulling effort on a frame are defined.

The calculation of the nominal torque on the rolls during asymmetric rolling of a strip with small laminated springs are held. To stabilize the rolling process it is proposed to use a front tension and a certain minimum value was calculated. Misalignment of the circumferential speeds of the driving and driven rolls are calculated. The design of a composite roll banded with two tabs on the brace and the two grooves on the shaft are proposed. Crumpling test and shear test of the tabs on the brace were conducted. Necessary structural toughness was provided.

Through the example of an induction centrifugal overlay welding of furnace charge from powders of tin bronze (90–100% of total lump) and an intermediate product (boehmite) the possibility of hardening of the coverings by means of chemical synthesis of nanodisperse modifiers (Al2O3) in the course of heating and transition to a liquid-phase condition of coating material is shown. Reasons about necessity to use in furnace charge of an intermediate product of larger fraction, than the nanodisperse modifiers synthesized from it are provided, if such furnace charge is produced by mechanical mixing and is affected by centrifugal forces. Results of metalgraphical researches and tribotechnical testing of the coverings received from powders of tin bronze and a boehmite in the course of an induction centrifugal overlay welding on the temperature conditions promoting synthesis a-Al2O3 are given.

Influence of cooling conditions and the size of stock material of instrumental steel 4H5MF1S on сability to surface hardening after high-temperature tempering at 500–650 °C is investigated. Comparison with hardening of forgings is given.

Influence of local vibration on workers in foundry shops is considered (distribution of occupational diseases according to professions and indicators of professional incidence of workers).

Influence of noise on working in foundry shops is considered (distribution of occupational disease cochlear neuritis of an auditory organ by professions and indicators of incidence of working).

Modern educational approaches to studying of discipline «Materials science and technologies of constructional materials» in educational activity of technical colleges during training engineers are considered.