---

CONSTRUCTIONAL MATERIALS, PHYSICAL METALLURGY

Kochanova A. V., Grogoryants A. G., Kochanov D. S., Drenin А. А. — Obtaining composite products with a metal matrix by selective laser melting 

In this review article the works devoted to the parts formation from composite materials in the process of selective laser melting are considered. Composite materials are of great interest, as they allow to combine the useful properties of the compositeconstituent elements and expand parts manufacturingpossibilities. Parts manufacturing from composites by selective laser melting (SLM) is interesting because the composite material is formed during thebuild process. There is a wide opportunity to combine the composition of the raw material for powder. Special attention is paid to composites with TiC-reinforced steel matrix. Carbide is able to improve performance and reduce the weight of the product due to low density. The formation of the composite in the process of SLM is not fully investigated, and creates prerequisites for a more in-depth study.
Key words: additive technologies, selective laser melting, composite materials, metalmatrix composites

TECHNOLOGIES AND EQUIPMENT OF MECHANICAL, PHYSICOTECHNICAL PROCESSING, PRESSURE TREATMENT

Zhukova A. V., Nurzhanova O. A., Musaev М. М. — Effect of setting the transverse of the cutting tool relative to the workpiece on the accuracy of processing during shaped turning

The influence of the transverse position changing of the form cutter relative to the blank on the size scatter diagram is considered. Calculations for a three-step small shaft part after the form cutter is displaced 0.02 mm closer to the part axis are performed. Size scatter graphs for a given part are plotted.
Key words: cutting tool, form cutter, machining accuracy, size scatter diagram

TECHNOLOGIES AND MACHINES FOR WELDING PRODUCTION AND RELATED PROCESSES

Tsumarev Yu. A., Sinitsa A. N., Lupachev A. V., Latypova E. Yu., Latun T. S. — Reducing stress concentration when making tie-ins into the main pipeline 

The features of insert work into main pipelines under the influence of internal pressure are considered. It is shown, that the welded joint of the branch with the main pipeline creates a significant stress concentration due to the presence of a through hole.
The maximum value of the operating stresses occurs on the inner surface of the main pipe in the longitudinal section with respect to it. To reduce the stress concentration, a new design of the insert is proposed, a distinctive feature of which is an elliptical hole instead of the known design with a round hole. The optimal relationship between the values of the ellipse axes equal to 12/7, which provides the minimum stress level under conditions of loading pipes by the internal working pressure, is established. A comparative calculation of stress fields, the results of which showed that replacing a round hole with an elliptical one provides a decrease in the level of maximum stresses by 1.54 times, is carried out.
Key words: main pipeline, inserts, stress concentration, elliptical opening, internal pressure, perfect fusion penetration

SPECIAL TECHNOLOGY

Dolzhanskiy Yu. M., Ilingina A. V., Kondaurov A. E., Kuzin A. I. — Technology for producing sheet metal blanks with a surface layer reinforced with fine-dispersed particles 

Results of the experimental technology development for rolling sheet of rocket and spacecraft products structural members with saturation (cladding) of their surface layers in the process of rolling with fine (in the future — nano-sized) particles in order to increase their performance properties.
Key words: aerospace products, structural members, performance properties, sheet blanks, rolling, cladding, fine particles

Yangirov I. F., Fedosov E. M., Maksudov D. V., Zuyaltdinova L. F. — Wireless transmission of electricity — Tesla generator 

The paper presents the scheme of the wireless transmission of electricity — Tesla generator. Mathematical model of the relevant decision. There are experimental data performed in the first stage. In the work that are addressing Global energy, wireless electricity transmission, and poses challenges for its implementation. The work is original and requires the attention of experts-electrical power engineers.
Key words: Tesla generator, wireless communications, magnetocumulative generator, beat cross frequency, phase and antiphase oscillations

METHODS OF CONTROL AND DIAGNOSTICS

Kuzin A. I., Egorov A. V., Mazurkevich A. N., Akxmedov F. A., Kinzhagulov I. Yu., Stepanova K. A., Ermakov V. A., Sukhorukov K. A. — Evaluation of the acoustic emission method applicability for quality control of joints made by friction stir welding

The paper analyzes the non-destructive quality control methods of the parts and products made by friction stir welding, substantiates the relevance of the acoustic emission method choice at monitoring various types of defects. Experimental studies for evaluation the applicability of the acoustic emission method were carried out. The corresponding conclusions were formulated.
Key words: non-destructive testing, friction stir welding, acoustic emission, stress-strain state

MATHEMATICAL MODELING, NUMERICAL METHODS, PROGRAM COMPLEXES

Yangirov I. F., Safiullin R. A. — Mathematical model of an induction heater new design

In the given article economic and technological advantages of application of induction heating of pipelines are considered. This method is compared with other heating methods. Describes a new design of induction Converter installations on the basis of stator arc asynchronous diately and developed its mathematical model.
Key words: induction heating, pipeline heating, energy-saving technologies, stator, arc asynchronous motor

ECONOMY AND ORGANIZATION OF PRODUCTION

Makarov G. I., Ivantsova S. G. — Import substitution policy strategy of the corrosion-resistant steels for the welding isothermal tanks for liquefied natural gases

The article considers the import substitution issues of corrosion-resistant steels for liquefied natural gases double-walled isothermal tankswelding. It’s shown that the imported steel X7Ni9 and AISI 304 used at the internal tank welding can be replaced by the domestic corrosion-resistant (stainless) austenitic steels, cold-resistant at cryogenic temperatures up to minus 196 °C. It’s proposed to change the design of the liquefied natural gas double-walled isothermal tank, excluding the external reinforced concrete casing, and save only the outer metal shell.
Key words: welded structures, isothermal tanks, corrosion-resistant austenitic steels, fracture toughness, cold resistance

Zagidullin R. R. — Optimization of the technological equipment population for subject-closed areas

The forming method of the technological equipment optimal composition for subjectclosed sections (SCS) of the machine-building enterprises is considered. The different alternative for building SCSs based on the theory of queuing are analyzed; models and their corresponding objective functions, as well as recommendations for the formation of multinomenclature SCSs that can be used in small-scale and mass production are developed. The proposed models have universal nature.
Key words: technological equipment, subject-closed section of machine-building production, target functions of the area, small-scale and mass production

Feofanov А. N., Frolov Е. B., Kryukov V. V., Shutikov М. А. — Improving the work efficiency of the technical control department from an integration of control results database with operational planning systems of the MES category

The article reflects the database integration of the Technical Control Department (TCD) control results of the company's products with the operational planning systems for the optimal production process. If to consider the interaction of CAD TP and MES-systems based on the data transmission relating to the control results, then it is possible to form a chain of integral systems that are introduced to the current operational plan for the realization of the arisen defect compensation and stabilize production.
Key words: work of TCD, work efficiency of technical control department, chief technologist department, sequence of incoming control of the assembly unit parts

FOREIGN EXPERIENCE

Potapova G. S. — Content of foreign journals

INFORMATION

Alphabetical Index of Articles for 2020 

---

Адрес: 127015, Москва, а/я 65.
Тел.: +7 (495) 640-7903
e-mail: ic@ic-tm.ru

© 2008-2024, ООО “Издательский центр ”Технология машиностроения”
Создание и реклама сайтов - www.itsite.ru