Chaikin A.V., Chaikin V.A. Theoretical prerequisites for creating a composite complex inoculand to eliminate chill structure in critical castings of gray cast iron
Gray cast iron is used to manufacture the «friction wedge» casting in a freight wagon’s bogie. To ensure the microstructure of SCH30 cast iron without chill formation, a new inoculant was developed. The composite inoculant consisted of dispersed powders of carbon- and silicon-containing materials (CCM and SCM). Theoretical prerequisites have been experimentally confirmed. The Cheboksary Aggregate Plant (OAO «Cheboksarsky Agregatny Zavod») implemented the production of the «friction wedge» casting made of SCH30 cast iron using the developed composite inoculant consisting of dispersed CCM and SCM, achieving economic benefits.
Keywords:Cast iron, melt, inoculation, composite inoculant, fluctuations, crystallization.

Boldyrev D.A. Optimization of the production of the «friction wedge» cast iron SCH35
A comprehensive adjustment of the chemical composition of the grey cast iron (ultimate strength ? 350 MPa) for key elements (carbon, silicon, chromium, copper and tin) has been performed, taking into account the multidirectional mechanisms of their influence on structure formation to optimize the cost of casting a friction wedge.
Key words:Friction wedge, chemical composition, cost.

Malinov L.S., Malinov V.L., Lavrova E.V., Cis E.A. Obtaining a liquid phase in hardened sections of steels during chemical-thermal and differentiated treatment technologies
Data are presented showing the expediency of obtaining a liquid phase in hardened sections of steels during chemical-thermal and differentiated treatment technologies to significantly accelerate diffusion processes, realize self–quenching from the liquid state, increase the depth of the hardened layer and obtain a multiphase structure with (metastable austenite undergoing dynamic deformation martensitic transformation (DDMT) under loading (effect self-hardening under loading – SHL).
Keywords:Liquid phase, chemical and thermal treatment, differentiated processing technologies, multiphase structure, metastable austenite, abrasive wear resistance.

Yerzhan A., Issagulova D.A., Kvon S.S., Okishev K.Yu., Kovaleva T.V. The possibility of using briquettes from ferroalloy production waste for deoxidation and alloying of silicon-containing steels
This study explores the possibility of using briquettes made from ferroalloy production waste for the deoxidation and alloying of silicon-containing steels. The briquettes were produced from high-dispersion ferrosilicon production dust (HDP) with the addition of iron ore concentrate. The chemical composition, mechanical properties, and microstructure of 30KhGS steel smelted using these briquettes were analyzed. As a reference, samples smelted using FS50-7 were used. The results showed that when deoxidized with the experimental briquettes, the chemical composition and mechanical properties of the steel met the GOST standards for this grade. This demonstrates the feasibility of using the experimental briquettes as a deoxidizer and alloying agent, which can help reduce steel production costs by lowering the charge material expenses and improving the environmental situation.
Keywords:Steel, high-dispersion dust, ferrosilicon, briquettes, deoxidation, alloying, microstructure, mechanical properties.

Marukovich E.I., Stetsenko V.Y., Stetsenko A.V. Crystallization of eutectic of aluminum-silicon alloys
Crystallization of the eutectic of aluminum-silicon alloys is a nanostructured process in which aluminum and silicon nanocrystals play a major role. ?-phase microcrystals are not solid solutions of silicon atoms in the aluminum crystal lattice. The main demodulating element of the structure of the eutectic of aluminum-silicon alloys is molecular hydrogen. Molecular hydrogen released on the dendritic microcrystals of eutectics prevents the dendrites from branching. This results in demodulating the eutectic structure. The main modifying element of the eutectic of aluminum-silicon alloys is sodium. In melts, sodium forms an emulsion that protects eutectic microcrystals from demodifying molecular hydrogen. Its negative effect effectively reduces the increased rate of solidification of the melts.
Keywords:Aluminum-silicon alloys, eutectic, crystallization, molecular hydrogen, nanocrystals, modification.

Yemelyanov V.O., Mikhailov O.V., Sokolov A.V. Prospects of optimization of casting processes by means of artificial intelligence
Industrial automation of foundry production in the modern sense is a synthesis of technology, marketing and artificial intelligence. The post-industrial organization of production requires maximum consideration of the client's interests. A breakthrough in the integration of marketing, product development, technology development and production organization became possible using an artificial intelligence algorithm. The use of AI in automation tools opens the era of cooperation between the manufacturer and the consumer of castings. In terms of artistic casting, the sculptor's task is to fill AI databases in order to ensure the most comfortable communication between the client and the program when composing his own composition. In mechanical engineering, AI can optimize the casting technology development process and production organization.
Keywords:Automation, PDM environment, foundry, post-industrial production, foundry, artificial intelligence.

Chaikin A.V., Chaikin V.A. Theoretical prerequisites for creating a composite complex inoculand to eliminate chill structure in critical castings of gray cast iron

Boldyrev D.A. Optimization of the production of the «friction wedge» cast iron SCH35

Malinov L.S., Malinov V.L., Lavrova E.V., Cis E.A. Obtaining a liquid phase in hardened sections of steels during chemical-thermal and differentiated treatment technologies

Yerzhan A., Issagulova D.A., Kvon S.S., Okishev K.Yu., Kovaleva T.V. The possibility of using briquettes from ferroalloy production waste for deoxidation and alloying of silicon-containing steels

Marukovich E.I., Stetsenko V.Y., Stetsenko A.V. Crystallization of eutectic of aluminum-silicon alloys

Yemelyanov V.O., Mikhailov O.V., Sokolov A.V. Prospects of optimization of casting processes by means of artificial intelligence