Has been classified and investigated the composition and properties of particulate iron-containing waste and the possibility of their processing and return to the industry. Describes the capabilities and prospects of recycling of particulate wastes in tilting rotary furnaces (TRF) without preprocessing

It is shown that extent of modifying of an alloy is proportional to overcooling at its hardening, viscosity of fusion and interphase superficial energy of crystals of the leading phase. The key technological parameters of modifying of an alloy are the speed of its hardening, viscosity of fusion and extent of refinement from surface-active elements. Their adsorption on crystals of the leading phase interferes with modifying of an alloy.

Influence of chrome and aluminums on casting and mechanical properties of chromic heat-resistant steels for making poured details, working in aggressive environments to 1250 °С is studied. It is determined that under optimum relationship of basic components steels have satisfactory casting and mechanical characteristics, allowing to make foundings of different mass, geometry and overall sizes. It becomes obvious that better oxidation resistance at different temperatures can be reached by various contents of chromium and aluminum. Experimental findings have proved that adding aluminum to chromium steel improves the oxidation resistance of steels investigated. To get steels with more than 25% chromium with addition of 2–3% aluminum are aims for further investigation.

The article describes the features of the modification of cast iron, high chrome cast iron and steel. It is shown that the modification of cast iron complex modifier should be based on the thickness of the walls of castings, and for steel and high chrome cast iron, it is beneficial to the macro and microstructure. The data confirming the removal of transcrystallization and size reduction microand macrostructure of castings in various types of iron-carbon alloys. Experimentally proved that in the transition from columnar to equiaxed structure observed increase in the number of eutectic cells, which confirms the position that transcrystallization terminated as a result of nucleation and growth of equiaxed crystalsin the area of concentration supercooling

The paper presents the results of a study on the effect of a method for dispersing the size of the component of the dispersed phase separation coatings used in high pressure die casting aluminum alloys.

It is shown that clusters in liquid metals are equilibrium nanocrystals. Stability of nanocrystals is confirmed by the rule of phases and is provided very low (in hundreds of times) with values of specific interphase superficial energy. It is shown that nanocrystals in liquid metals have the sizes more critical diameter.

Three fundamental principles of modern production: Saving resources; Environmental cleanliness; Security. During the reconstruction, re-equipment, modernization and creation of a new thermal equipment, it is necessary to choose units and technologies that provide greater efficiency and higher efficiency equipment, strict compliance with environmental and safety standards.

The analysis of results of 180 casts in the short-flame rotor furnace with use in quality the batch mixture of aluminum shaving, slag and pro-sowing of slag is carried out. Influence of composition of furnace charge on a metallurgical exit and duration of melting is estimated. The compositions of furnace charge providing the maximum metallurgical exit are defined.

The article compares different aspects of brake disc production using vertically parted flaskless molding lines and horizontal parted tight flask molding lines. In the first section the vertical molding process demonstrates advantages in terms of investment costs. Furthermore, annual energy consumption of the molding lines in relation to castings produced is discussed, again demonstrating clear benefits from the Disamatic-technology. In the second section a comparison between two molding technologies for the production of brake discs is made on the basis of production data from the South Korean foundry Hyundai Sungwoo. The Disamatic molding process, however, offers advantages in terms of tooling costs and energy consumption.

We have defined the regularities of the doping of cast iron through the slag phase of nickel and copper due to the waste catalysts using a carbonaceous reducing agent. We have justified the need to use the cast iron chips as a seed in the composition of the slag mixture. We have defined the dependence of the degree of extraction of nickel or copper from spent catalyst on the amount of the catalyst, on the basicity of the slag mixture, on the temperature and time of melting.

Motor is one of most important part of automobile determine its economical effectiveness of usage. On the other hand, sleeves, pistons and rings are crucible parts as they determine the service life of a motor. These parts are producing in big scale – dozens of millions pieces. Increase of cylinder sleeves physical-mechanical properties results in prolongation of motor service life and improvement of motor’s characteristics. Nowadays low alloyed cast irons with perlite structure are used to manufacture motor’s sleeves. For alloying purposes such traditional elements as Cr, Ni, Cu, and V are applied. But it is interesting to use molybdenum for cast iron alloying. It is known that alloying of alloys allows considerable increasing of consumption properties of castings. But in spite of advantages of alloys alloying the increase of molybdenum containing iron-carbon alloys production is restricted by economical reasons – high cost of alloying additions. Expenditures on alloying additions can be reduced by the application cheap secondary alloys in the charge. So, the present paper is devoted to investigation of alloying peculiarities during the treatment of ferrous alloys with molybdenum applying different initial materials.

The present article describes prerequisites for introduction and operation of CRM systems at the metallurgical enterprises, and also shows specific features of CRM systems for metallurgical branch.

Transition from system of planned and compulsory repairs, to service of the equipment in connection of its current technical condition is one of the main directions in resource saving.

Experience of utilization of IBA automation equipment for diagnostics of malfunctions of the equipment is given. The analysis of advantages of utilization of diagnostic aids of malfunctions of IBA firm in the BSW pipe-rolling shop is made.

In the article analysis of the existing methods of calculation of temperature of a steel liquidus is made on the basis of which the option providing results with the minimum error of experimental data is chosen. To define the metallurgical length of the ingot spilled in the conditions of the of continuous casting machine and time of full solidification of a metal new assessment technique is offered; existence of clusters in liquid melt and a liquidation of impurities in the course of crystallization is taken into consideration

The basic elements of the new complex technologies providing effective receiving of the materials with the new level of properties are considered. Prospects of creation of new systems for alloying of constructional materials for mechanical engineering with management of their primary crystal structure, hardening mechanisms and resistance to fragile destruction are noted. The resource-saving method of direct surface alloying and modifying (using oxides) is developed. Industrial wastes and semi-products of adjacent processes are used as modifying additives. The metals reduction is made by atomic hydrogen and carbon from the special coverings of a casting mold and cores containing high-polymeric connections.

The necessary level of material’s hardness is determined by the exploitation conditions and presence of technological operations during manufacturing of articles. Mechanical edge cutting machining of wear resistant materials is impeded because of their high hardness. It is recommended to apply annealing in order to decrease hardness and improve machinability. The purpose of the work consisted in obtaining of regression dependences of cast iron’s macrohardness on its chemical content after annealing at 730 °С. With the use of mathematical experimental design the regression dependences of cast iron’s macrohardness and structural components’ microhardness on С, Cr, Mn, Ni content have been established. The minimal hardness of 27,6 HRC after annealing at 730 °С is obtained in the cast iron containing: 3,9% С; 11,4% Cr; 0,6% Mn; 0,2% Ni. The maximal hardness of 70,4 HRC is obtained when the content is as follows: 1,1% С; 25,6% Cr; 5,4% Mn; 3,0% Ni. Annealing at 730 °С decreases the cast irons’ hardness containing the minimal amount of Cr, Mn and Ni. Annealing at 730 °С is recommended for cast irons alloyed by Mn and Ni for increasing of hardness.

Various schemes of ultrasonic oscillatory system are developed: with a «force nonsensitive» support, with a «force sensitive» support, with the deforming steel balls in bulk. Results of the ultrasonic treatment showed that hardening of a surface of the samples took place when the vibration amplitude of a radiator exceeds a certain level. The level of hardening increases with increase in amplitude of fluctuations of a radiator. Higher level of hardening is registered when the surface is treated by steel balls.

The application of the method of dark field microscopy for the study of colored objects of material technology was researched. The capability of corrosive damage analysis and determination of the thickness of the metal coating were demonstrated. The performance capability of analysis of «reflection» in the dark field during the study of non-metallic materials – orthopedic implants and fireclay refractory were tested. An example of defect detection of carbon coating was displayed.

To carry out experimental studies of the influence of temperature modes on residual deformation of the sample-ing knives were manufactured pilot models of chipper knives 6HV2S steels (basic) and U8A 9HF each in size up to its analog (finished knife). We draw on the modes recommended for these steels.

The experimentalresultsshowed that the samples with smallsize and relatively large thickness after THEN do not have any permanent deformations. Samples ments concerning thin and having a rectangularshape (length 300 mm), then there are residual after deformation as Trough. The magnitude of the deflection is greater the smaller the ratio of the thickness of the sample to its length and width. It is found that the samples made from steel 6HV2S have a deflection value smaller than the samples of steel grades and 9HF U8A.

Repair any defects in the form of troughs manage curved by heating the samples to the tempering temperature and the subsequent exposure between steel plates in a hydraulic press under a load to cool the workpiece.

Thus, as a result of the research found that the residual deformation-tion (trough) samples of knives from different grades (6HV2S, 9HF, U8A) has a different value, depending on the geometrical parameters of knives (length, thickness, width) and grades. The deflection can be easily eliminated by additional straightening.

In the course of the work of steel 6HV2S supplied to the Belarusian market of Russia, at the branch of JSC «Atlant» -BSZ it was manufactured a few sets of prototypes chipper knives, intended for testing in a production environment on the woodworking enterprises of the republic (of «Ivatsevichidrev», JSC «Vitebskdrev/»).

Production tests of experimental knives made in accordance with the process technology-mi, developed in Barga, showed their compliance with production requirements and also require-ments of state standards, which allows recommend them for a wide introduction to woodworking factories, specializing in the production of wood chips.

The advantages and drawbacks of high-strength cast irons with bainitic structure are reviewed basing on the authors’ own experience in the production of critical partsfrom this material and on the analysis of world trends. A possibility of the replacement of alloy steels by bainitic cast iron in manufacturing critical machine parts is discussed.

The problems of improving tool life of cold deformation. Composition designed and studied mechanical properties of the new tool steel 75H5GMFS, by allowing the application of different types of heat treatment, including high-temperature tempering after casting, the use for the manufacture of cold-forming tool, for example, upon receipt of the housings of watches brass billets.

The presented results show that coverings from mechanically alloyed thermoreacting powders of system «nickel–aluminum» are nonequilibrium multiphase systems which basis represents solid solution of aluminum in nickel. It has the microcrystalline type of structure which is characterized by an advanced surface of borders of the grains and subgrains stabilized by nanodimensional inclusions of oxides and alyuminid. These coverings surpass by 1,2–1,6 times analogs in durability, hardness and wear resistance.

The information about the St. Petersburg Technical Fair 2015.