The article presents the results of research recycling of dispersed materials in rotary furnaces. Has been received new data on the of heat and mass transfer processes and carry out intensive and continuous process of solid- liquid-phase reduction of oxides in a single unit.

It is shown that melting and molding of hypereutectic silumin are complicated physical and chemical nanostructural processes. The major part at these processes is played by the centers of crystallization of primary crystals of silicon, silicon nanocrystals, the dissolved and adsorbed oxygen. The part of the modifying crystals of Cu3P is reduced to decreasing of concentration of the adsorbed oxygen and an intensification of process of coagulation of nanocrystals of silicon in the centers of crystallization of primary crystals of silicon.

The article shows the advantages and disadvantages of precision casting into disposable ceramic molds. The high quality shaped castings produced by modernized ceramic molding process are proved the reliability and prospects of this advanced technology.

Through the example of production of specific castings the effectiveness of the precision ceramic molding technology for the production of shaped castings and castings with the higher performance requirements has been demonstrated.

Considered physico-mechanical, physico-chemical processes occurring in the zone contact metal-mold core at all stages of the formation of the casting. The degree of influence of these processes on the formation of internal surfaces of castings.

The influence of the chemical composition on the corrosion rate of high-chromium cast iron was researched. During the castings’ cooling process the replacement of the atoms of nickel, iron and manganese by the atoms of chromium in the carbides took place. As a result, the areas with reduced chromium content were formed near carbides. After decreasing the chromium content in these areas below 12% the corrosion processes activated. Using the mathematical experimental design techniques the regression dependence between the corrosion rate of the cast irons and content of C, Cr, Mn and Ni in them was established. The conducted research showed that the minimum corrosion rate was observed in the cast iron containing: 1.09% C, 25.57% Cr, 0.6% Mn and 1.87% Ni. The obtained results allow predicting the corrosion rate of the high-chromium cast irons alloyed with Mn and Ni and may be used while establishing the new compositions of wear-resistant materials.

Comparison of the properties of the casting paints based on sodium silicate and sodium aluminat, and sodium aluminat as an additive to the ink for the organic binder has shown that sodium aluminat provides a higher level of properties than sodium silicate and aluminat, in addition to an organic paint binder improves properties

The interaction of the filler (distensillimanit or binder (sodium aluminate) after mixing them to form a mold wash, drying the paint and removing water of crystallization. The conclusion of the sodium aluminate suitability as a foundry binder paints.

The major factors having an detrimental harmful impact on ecology in forming sites in foundry shops are examined in the article. The well-known ways of solution of these issues are described and the new ways of solution are proposed. The general approach to the solution of environmental issues on forming sites of foundry shops is formulated.

In article introduction of an energy saving activity in technological process of wire’s surfacing by borate of soda during drawing is described. This activity is directed to decrease in electricity consumption for heating of solution in borate of soda bathtubs by use of the recovered heat of steel-smelting shops and is described in the article.

Enhancement of calibration of mill rolls of the rolling mill 150, to improve of the mill products quality characteristics and to increase efficiency of the whole production is described in the article.

Deformation by drawing with the raised share of the squeezing tension and application of additional deformation with small degrees in the line of a drawing camp allow to minimize a wire annealing of a cold-deformed wire during a twist of a highstrength metal cord.

The high efficiency of application of electrolytes of new generation on the basis of methane-sulfonic acid and nickel acetate at production of profiled cathode sediments is shown.

Analysis of forces acting on the rolls in the radial direction made by the analytical method and with use of computer modeling techniques is made. Application of FEM has allowed to calculate distribution of power parameters of the technological process during time. The deviation of the experimental data on the results of analytical calculation is within 3%.

Modeling of process of strip’s rolling with variable compression and an end’s bending was carried out. The computer model of production of a brake shoe pin of railway transport was defined. The values of the heat transfer coefficients during the contacts of workpiece with air, and the mandrel roll were defined. The heating temperature of the workpiece is required to comply conditions of rolling was identified. Tension distribution in hotbeds of deformation and the fall of the workpiece temperature as the flow of the rolling process has been fixed.

Explanatory imprecisions of concept of globular pearlite and ferrite-carbide-mixture are considered. The need of concept binding of globular pearlite to specific grain with 0.8% carbon content is explained with the assistance of exemplary data obtained at the present metallographic equipment. The question of educational material presentation concerning the process of teaching of discipline «Materials and construction materials technology» is discussed in relation to the educational process of technical universities, in particular, the Belarusian State Agrarian Technical University.

The alloys of Fe-Cr-Ni-C system for the purpose of development the economic alloy paramagnetic (not magnetic) steels are investigated. A series of alloys are melted for this purpose, deformation is carried out and a structural state was studied.

The area for the selection of the chemical composition of the economic alloy steels with stable paramagnetic properties is defined.

The technology of obtaining diffusion doped alloys made from metal scrap is reviewed in the article. The influence of short term preprocessing at high temperature on structure formation by concentrated energy sources within the further induction deposit is reviewed. A mechanism of a contact eutectic melting in diffusion doped alloys at short term high temperature treatment is described and suggested in this work. It was shown that such kind of processing of diffusion doped alloys is a perspective way of treatment when using induction hard-facing technologies for obtaining wear resistant coatings. A resource and energy saving technology was developed for obtaining wear resistant coatings based on diffusion doped alloys from metal scrap treated using induction hard-facing process.

Differences of magnetic properties of cast iron with various structure and tasks of structure control of castings by their magnetic parameter are analyzed in the article.