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CONSTRUCTIONAL MATERIALS, PHYSICAL METALLURGY

Kovtunov А. I., Khokhlov Yu. Yu., Myamin S. V. — Effect of aluminum melt alloying by nickel on liquid-phase processes at formation of composite materials foam-aluminum-titanium

Foam aluminum is a promising material with a unique combination of mechanical and operational properties: low specific gravity, low coefficient of thermal conductivity, ability to absorb acoustic and electromagnetic oscillations, the ability to deform under constant load.
To increase the mechanical properties of foams, it has been proposed to use layered composite structures as foam aluminum-titanium, which can be successfully prepared by mold filling with molten aluminum with installed titanium sheets, between which is a layer of water-soluble granules. Increasing the adhesion strength between foam aluminum and titanium is ensured by aluminum alloying with nickel. The processes investigation of aluminum wetting and spreading doped with nickel on titanium under the conditions of formation of foam aluminum-titanium composites is carried out. The influence of flux composition, melt temperature and degree of doping on the spreading area of aluminum on titanium, the wetting strength and adhesion strength of aluminum and titanium is established.
Key words: foam aluminum, titanium, composite material, activating flux, wetting, spreading, adhesion strength, aluminum melt

BLANK PRODUCTION

Karpova E. Yu., Gabelchenko N. I., Gaburay Yu., Karpova N. V. — Improving the quality of castings from 45L steel by selecting the optimum heat treatment mode

The paper is devoted to obtaining stable mechanical properties of castings from carbon steel 45L by developing a new heat treatment regime. The parallel testing of the metal after the standard and proposed heat treatment are carried out. It is established that the pendulum thermal-cycle processing effectively eliminates defects of the primary structure and ensure the best complex of mechanical properties of 45L steel.
Key words: carbon steel, thermo-cycling, ferrite vid manstetts, dendrite structure

SHAPING TECHNOLOGY

Babentsova L. P., Antsiferova I. V. — The process features of selective laser sintering

Additive production technologies are on the threshold of new discoveries. Until recently, the question of their practical application was not so global. The rapid production of parts, without the funds expense for the manufacture of equipment and molds, is a transition to a new revolution of the 21st century. The technology of 3D-printing allowed creating products, changing only the parameters in the digital model. In this paper, the process of obtaining articles by the method of selective laser sintering is considered.
Key words: additive technologies (AT), 3D-printing technology, selective laser sintering (SLS), quality, structure, defects, mechanical properties

Demidov V. V. — The accuracy of the teeth profile of the corrected gears treated with worm-modular mills with positive back rake angle

The influence of positive back rake angles of worm-module mills, profiled from an involute and Archimedean (with approximation of tooth profile by chords) worms, on the teeth profile accuracy of corrected spur and helical gears with a correction factor from –0,6 to 0,6 is established.
Key words: worm-modular milling cutter, positive back rake angle, computer imitating simulation, gear tooth shape accuracy, corrected wheel, correction factor

Erenkov O. Yu., Erukov A. I. — The effect investigation of caprolon heat treatment on the quality of the blanks turning

The results of experimental researches of a new method of turning workpieces made of caprolon are presented. The technical essence of the method lies in the fact that before cutting the heat treatment of the workpiece is processing. The results of experimental verification of the developed method confirmed the feasibility of its implementation, as the turning of caprolon after heat treatment according to the proposed sequence leads to reduction of the roughness of the processed surface details, as evidenced by the values of the roughness parameters and the type of the resulting chip.
Key words: caprolon, turning, heat treatment, roughness, chip formation

MACHINE-ASSEMBLING PRODUCTION

Rosinov A. Ya., Dogadin A. V., Beskrovny A. Yu. — The operative installation system of stack assembly means for connections of ship hulls external shelling

The analysis of labor costs associated with the application of the traditionally used temporarily welded fastening elements of the assembly as well as production and technological features of the joints of the outer skin, performed on the stocks is presented. The researches results of physiologists relating to hands muscles loading of building slip assemblers as well as the permissible mass of the assembling tools they raise are considered.
The imperfection of the building slip assembly performed with the application of existing facilities is indicated. The device and principle of a new system application for fast mounting of building slip assembly means are considered. The results of calculating the limiting forces created by the new system and the torque value of the push elements creating these forces are presented. By comparing the amount of assembly effort required to perform the outer sheathing joints and the power parameters of the quick assembly system, a possible area of its application is established.
Key words: mounting effort features of sheathing connections, assembling means, maximum permissible static loads, energy and material consumption, support bridges, gun to check pins, assembly forces, tightening torques

RECEIPT TECHNOLOGY OF THE PERMANENT CONNECTIONS

Peshkov V. V., Bulkov A. B., Korchagin I. B. — Diffusive welding of laminated panels with honeycomb filler by thin-walled composite from OT4-1 alloy

The effect of preliminary gas-thermal nitriding of the titanium alloy OT4-1 on increasing its resistance to high-temperature deformation is considered. It is established that the kinetics of high-temperature deformation under conditions of isothermal testing of pre-nitrided titanium is caused by the development of two competing processes: "hardening" caused by the presence of nitride layers on the surface and "softening" associated with the nitrogen dissolution in a metal substrate and deblocking the titanium surface with nitrides.
The duration of diffusion welding with the use of a nitrated filler was determined, the ultimate loss of its stability under conditions of diffusion welding and the strength of the diffusion joining during the tearing off tests.
Key words: titanium alloys, composite, diffusion welding, nitriding

SPECIAL TECHNOLOGIES

Khalfun L. M., Bratukhin A. G., Sokolov V. P. — Development and manufacture of precision aggregates for aircraft engines based on digital technologies at MPO-Rumyantsev

The article describes the features of the modern digital technologies application at all stages of the gas turbine aircraft engines life cycle and precision fuel distribution units. The use of modern computing facilities and software allowed to reduce to maximum the implementation time-frame of project and reduce labor intensity.
Key words: electronic models of aggregates, software, dimensional chains, constructive documentation, competitiveness

METHODS OF CONTROL AND DIAGNOSTICS

Bulatov A. S., Syasko V. A. — Modern ultrasonic methods for measuring the walls residual thickness of metal products under protective coatings

The article is devoted to the comparative analysis of modern measuring methods the residual thickness of metal under protective coatings. The implementation principles of each method, their advantages and disadvantages, as well as the sphere of use are considered. Measures permit to improve the characteristics of the developed instruments are indicated. Recommendations over improving the reliability of the results when performing measurements through the coating are given.
Key words: ultrasonic testing, coating, residual thickness, echo-echo-method

MATHEMATICAL MODELING, NUMERICAL METHODS, PROGRAM COMPLEXES

Khanakhmedova S. A., Gasanov Z. A. — Simulation of the starting process by taking into account the static moment change

With research system DCE — ICE (direct current engine — internal combustion engine) is modeled starting process of the engine direct current in the environment of MATLAB/Simulink, taking into account change of the static moment depending on speed. Change of factor of the pressure setting to intensity submitted on anchor chain of the engine of a direct current, defines an optimum mode of process of start-up. With application of new model, changing necessary parameter, its influence on character of starting process is studied.
Key words: starter-generator, modeling of starting process, factor of the steepness of pressure, electromagnetic moment, static moment, pulse-width modulation

STANDARDIZATION, QUALITY PRODUCTION MANAGEMENT

Baraev A. V., Dolzhanskiy Yu. M., Ilingina A. V. — Electronic certification of technologies and special equipment of the RCT

The perspective of the digital production platform application, in particular, the features of electronic certification of new technologies with the purpose of improving the quality of products are presented.
Key words: information passport, electronic certification parameters, interactive database

ECONOMY AND ORGANIZATION OF PRODUCTION

Ryabkov O. Yu. — Methodological bases for management systems formation of intellectual property in the science intensive organizations

The article deals with the formation of information systems, management of intellectual property in knowledge-intensive organizations. The aim of the research is theoretical justification for the development and implementation of automated information systems, management of intellectual property in high-tech companies and corporations that are part of an integrated automated information systems management organization or corporation, as the application of ERP II. The survey identified the nature and content of information systems in the economy, investigated the role of intellectual property in the development of innovative economy in Russia, the classification of technical solutions in the field of information systems, intellectual property management, analyzed the experience of intellectual property management in the leading Russian and foreign organizations and corporations, and is represented by review of the existing automated information systems, management of intellectual property. In conclusion, the conclusion about the necessity of practical testing of the development and implementation of automated information systems, management of intellectual property in high-tech companies and corporations as the application of ERP II.
Key words: intellectual property, intellectual property management, innovative economy, national innovation system, information system

EDUCATION AND TRAINING

Frolov V. A., Fedorov S. A. — Possibilities of an education and training dual model of professional personnel for high-tech industries

The article considers conceptual bases of professional training based on dual education model.
Key words: the dual training model, professional staff, a combination of academic education and practical training, the interaction of educational and occupational spheres

FOREIGN EXPERIENCE

Potapova G. S. — Content of foreign journals

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