Andreev V.V., Nuraliev F.A., Kovalevich E.V., Udod P.A. Nodular cast iron for rollers of finishing trains of hot rolling mills
A new composition of chromium-aluminum cast iron with nodular graphite, which has high heat resistance, wear resistance and strength at operating temperatures of the rollers of finishing trains of hot rolling mills and a technology of centrifugal casting of roller bodies from this material has been developed. The chemical composition the developed cast iron is as follows, %: 3.0…3.6 C; 2.0…2.6 Si; up to 0.6 Mn; 0.8…2.0 Al; 0.4…0.6 Cr; up to 1.0 Ni.
Keywords: Cast iron, flake and spherical graphite, chemical composition, mechanical properties, modifiers and master alloys, rollers, sheet rolling mills.

Panov A.G., Gurtov D.A., Shayekhova I.F., Gimazetdinova Ch.A., Malanova D.D. Prospects for cast iron and tasks of material science of cast iron intended for aircraft engine production
The results of development of mechanical properties of cast irons, modern examples and prospects of their application in aircraft engine building are presented. It is shown that during the last half a century cast irons have achieved higher specific gravity and, moreover, higher specific volume mechanical properties which gives reason to introduce them in aircraft engine construction instead of aluminum alloys without increasing their weight and with increasing power and service life of engines at least in small aircraft, first of all for unmanned aerial vehicles.
Keywords: High-strength cast iron, aircraft engine construction.

Ivanov S.V., Boldyrev D.A. Gray iron for automobile brake discs: grades, features of properties and production
The results of development of mechanical properties of cast irons, modern examples and prospects of their application in aircraft engine building are presented. It is shown that during the last half a century cast irons have achieved higher specific gravity and, moreover, higher specific volume mechanical properties which gives reason to introduce them in aircraft engine construction instead of aluminum alloys without increasing their weight and with increasing power and service life of engines at least in small aircraft, first of all for unmanned aerial vehicles.
Keywords: High-strength cast iron, aircraft engine construction.

Koltygin A.V., Pavlov A.V. Influence of Gd and Y on the properties of the casting alloy in the Mg-Nd-Gd-Y-Zn-Zr system
This work presents the results of researches on the mechanical properties and engineering properties of the cast alloy of the Mg-Nd-Gd-Y-Zn-Zr system. The positive effect of Gd and Y on castings made from magnesium casting alloys has been demonstrated. The following values were obtained for the heat-treated alloy UTS equal to 325 ±2.2 MP a; EL equal to 4.7 ± 0.3%; YS equal to 227 ± 1.3 MPa.
Keywords: Magnesium alloy, casting, Mg-Gd-Nd-Y-Zn-Zr, high strength alloy, light alloys.

Korostelev V.F. Improvement of injection molding processes
Improving the quality of castings in the presented work is associated with improving the physical and mechanical properties, with the formation of a homogeneous structure without shrinkage defects of the crystallizing metal due to more efficient use of pressure. Based on the analysis of the results of the performed research and generalization of production experience, a schematic diagram of the process of applying pressure and crimping metal before crystallization, followed by pressing out of the 12...14% of the poured metal volume from under a hard crust to compensate for shrinkage under pressure, is developed. The behavior of metal under pressure is discussed, and solutions aimed at using the process on an industrial scale are proposed.
Keywords: Casting, castings, pressure, volumetric shrinkage compensation, pressure control, algorithm, application potential.

Saubanov M.N., Illarionov I.E., Leushin I.O. Analysis of molding materials and mixtures for the production of titanium casting
The analysis and research work on the selection of optimal compositions of molding materials and mixtures in order to improve the quality of shaped casting from titanium alloys in industrial production conditions has been carried out.
Keywords: Magnesite and periclase powder, inertia and thermal resistance to titanium, fire resistance.

Chechukha V.I., Sadokha M.A. Ventilation systems in high-pressure casting molds
Various versions of the ventilation system for castings made by high-pressure casting are considered. The variants of the design and placement of the chelvent in the mold are presented. The practical experience of using chilvent in order to improve the ventilation system of the mold to ensure a reduction in the defect of castings by gas shells and porosity is described.
Keywords: High-pressure casting, casting, casting defects, gas sinks, gas porosity, casting quality, mold, mold design, mold ventilation system, CAD.

Dmitriev V.A. Optimization of the charge composition by linear programming
A method for calculating the charge of the metallurgical process of melting aluminum alloy in MS Excel is presented, which allows optimizing the composition of the charge according to the criterion of the minimum cost of the melting process, taking into account restrictions on the use of charge components and the content of harmful impurities in the final alloy and automating the calculation process.
Keywords: Charge, aluminum alloy, linear programming, MS Excel, charge, melting cost.

Yudin D.M., Zhdanova A.V., Kostin S.I., Torpishcheva O.N. Analysis of SLS and SLM technology parameters for foundry production
The article discusses additive manufacturing using 3D metal printing, including SLS and SLM technologies. The principle of 3D printing, the processes of creating a model and forming an object, as well as the advantages and disadvantages of this technology are described. The description of the main defects of the surface of products obtained by additive manufacturing, as well as possible difficulties in introducing 3D technologies into the production cycle, is given. The article notes the high potential of 3D printing for various industries, but also points out the need to develop an individual approach to each scenario of the introduction of this technology.
Keywords: SLM technologies, 3D-printing, additivity, SLS-technologies.

Andreev V.V., Nuraliev F.A., Kovalevich E.V., Udod P.A. Nodular cast iron for rollers of finishing trains of hot rolling mills

Panov A.G., Gurtov D.A., Shayekhova I.F., Gimazetdinova Ch.A., Malanova D.D. Prospects for cast iron and tasks of material science of cast iron intended for aircraft engine production

Ivanov S.V., Boldyrev D.A. Gray iron for automobile brake discs: grades, features of properties and production

Koltygin A.V., Pavlov A.V. Influence of Gd and Y on the properties of the casting alloy in the Mg-Nd-Gd-Y-Zn-Zr system

Korostelev V.F. Improvement of injection molding processes

Saubanov M.N., Illarionov I.E., Leushin I.O. Analysis of molding materials and mixtures for the production of titanium casting

Chechukha V.I., Sadokha M.A. Ventilation systems in high-pressure casting molds

Dmitriev V.A. Optimization of the charge composition by linear programming

Yudin D.M., Zhdanova A.V., Kostin S.I., Torpishcheva O.N. Analysis of SLS and SLM technology parameters for foundry production