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CONSTRUCTIONAL MATERIALS, PHYSICAL METALLURGY

Grigoryants А. G., Shiganov I. N., Tretyakov R. S., Misyurov A. I., Smirnova N. A., Asyutin R. D., Perestoronin A. V., Usov S. V. — Features of the surface composite layer formation by laser-powder injection of tungsten monocarbide particles into a matrix from carbon steel 

The possibility of application of laser carbon steel for railway transport wheels manufacturing surface alloying with spherical tungsten carbides WC was considered. Experiments showed that volume part of reinforcing particles could reach 58 % when laserpowder alloying is applied. In the same time, if volume par of WC is exceeds 16 % cracks on the surface are observed.
Key words: laser alloying, composite layer, tungsten carbide, carbon steel, tyre, surface hardening

Kurilkin V. V., Saykov I. V., Malakhov A. Yu., Shchykin A. S., Berdychenko А. А. — Study of the compound boundary structure in a bimetal steel 08Cr18Ni10T + vanadium VnPd-1 + titanium VT1-0 at the action of explosion energy

The effectiveness of using a barrier layer of vanadium in a bimetallic composition consists of stainless steel 08Cr18Ni10T + vanadium VnPd-1 + titanium VT1-0 obtained by explosion welding meant to prevent the formation of an intermetallic interlayer under the effect of different temperatures was investigated. The evolution of the near-weld zone was investigated by analysis with scanning electron microscope of microsections from samples heated at 600, 700, 800 and 900 °C with 1, 3, 5 and 10 hours exposures. The researches indicated that the barrier layer of vanadium reliably prevents mutual diffusion between steel and titanium at high temperatures, thus eliminating the formation of intermetallic compounds in the adjacent zone. The limit of the barrier layer effectiveness was determined.
Key words: explosion welding, bimetals, intermetallics, barrier layer

TECHNOLOGIES AND EQUIPMENT FOR MECHANICAL AND PHYSICOTECHNICAL PROCESSING, PRESSURE TREATMENT

Maksimov Е. А., Ustinovskiy E. P. — Improving the quality of a thick plate at straightening on a roller-type correct machine equipped with a device for bending the front end

The design of a straightening machine (RPM) equipped with a device for bending the front end of the sheet is presented. The sheet straightening on such machine can improve the quality of the straightened sheets. A methodology for calculating the frame parameters of the device for bending the front end of the sheet during its correction on the RPM is developed.
The stresses in the upper cross-member and the base of the device frame are determined at carrying out laboratory studies by means of a polarizing-optical method.
Key words: improving the quality of the straightened sheets, the straightening machine, the device for bending the front end of the sheet

Chudin V. N., Pasynkov А. А. — Extrusion of pipeline elements at viscous-plastic deformation

The process is considered and relationships are proposed for calculating the modes of isothermal direct extrusion of pipeline parts. The material of the preforms is viscoplastic when deformed. The energy calculation method is applied to the discontinuous field of displacement velocities. Technological data and product samples are given.
Key words: velocity field, power, pressure, time, damageability, continuity

Sibagatulin D. S., Shiryaev А. А., Trofimov V. N., Karmanov V. V. — The influence investigation of mechanical processing modes for 38CrNi3MoV steel on the surface quality through the use of the Barkhausen noise recording method

The technological residual macrotension arising in the course of production of responsible and expensive products of mechanical engineering by methods of cutting or processing of metals pressure defines their quality, a resource and reliability in use.
At design and production of products of responsible appointment as one of the regulated parameters which are specified in design-technology documentation the level of residual macrotension is. In the conditions of mass production of products from ferromagnetic materials application of a method of registration of noise of Barkgauzen is expedient. This method allows to determine residual macrotension. In article influence of the modes of cutting on the level of the magnetonoise Barkgauzena parameter and its interrelation with the level of residual macrotension is investigated. In work: influence of the modes of machining of steel 38KhN3MFA (GOST 4543—71) on the size of the magnetonoise Barkgauzena parameter is investigated. Dependences of change of size of magnetonoise parameter for steel 38KhN3MFA at various modes of cutting are experimentally received. The dependence of size of magnetonoise parameter on the cutting modes — giving and speeds of cutting is established.
Key words: residual macro-stresses, non-destructive testing, X-ray diffractometry, Barkhausen noise, ferromagnetic materials, magneto-noise parameter, stress-strain state

TECHNOLOGIES AND MACHINES FOR WELDING PRODUCTION AND RELATED PROCESSES

Volkov S. S., Nerovny V. M., Remizov A. L. — Methods for increasing the productivity of ultrasonic welding of polymer films

Determined that with increasing length of contact butt welding of the waveguide linearly increases the speed and performance of seam welding. The use of low-power piezoelectric transducers for ultrasonic welding of polymer films with bilateral extraction of energy from the transducer improves the performance and efficiency of the welding process.
Key words: ultrasonic welding, plastic film, amplitude, pressure, frequency, converter, nickel, piezoelectric ceramic, the resistance of the load

Shtennikov B. N. — Thermal characteristics of soldering rods

The influence of the thermophysical characteristics of the material of the soldering rod on its thermal characteristics. The corresponding analytical dependence. Mapped: the decline of temperature during the soldering and heating time soldering after soldering rods made of different materials. On the basis of the conducted research the conclusion about the inappropriateness of the replacement of copper for silver soldering rods.
Key words: instrumentation, measuring equipment, experiment, comparison, temperature, heat transfer, soldering

SPECIAL TYPES OF TECHNOLOGIES

Matyushkin B. A., Denisov V. I., Tolkachev А. А. — General theoretical principles of electric arc metallization at coatings

The work is devoted to a comparative evaluation of the effectiveness of new processes for applying multicomponent metal coatings and their application in friction pairs for parts and components of APC machinery.
Key words: electric arc supersonic metallization (EDSM), multicomponent coating, adhesion, cohesion, dispersed air flow

Maksudov D. V., Ismagilov F. R., Yangirov I. F. — Arch induction motor as an element of a heating installation of the field oil pipelines

In the given scientific 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

METHODS OF CONTROL AND DIAGNOSTICS IN MECHANICAL ENGINEERING

Dronov Е. А., Barakhov V. I., Barakhov A. V. — The use of X-ray computed tomography at evaluation the probability of a diesel engine jamming

Suggested herein is one of possible approaches to evaluation of diesel engine seizing probability realized on the basis of X-ray computing tomography for the purpose of detec tion of cylinder wall strain under workloads. Subjected to the research were diesel en gi nes produced by Tulamashzavod JSC where cylinders and pistons are assembled accord ing to selective assembly system.
Key words: X-ray tomography, diesel engine, seizing probability

MATHEMATICAL MODELING, NUMERICAL METHODS, PROGRAM COMPLEXES

Korneeva B. M., Korneev S. S. — Mathematical modeling of the tool wear taking into account the effect of acoustic emission waves

Based on the submissions of kinetic concepts of strength of solids obtained mathematical model linking the time before the destruction of the basic volume of material cutting tool with the parameters of acoustic emission waves in non-stationary machining conditions at a given level of existing loads and temperatures, the use of which in the real conditions of the process of machining allows you to find the relationship between input and output processing options and develop Express-methods of rational selection and machining of parts of complex shape of hard-machinable materials.
Key words: wear of cutting tools, nonstationary processing conditions, waves of acoustic emission, stress, time prior to destruction

AUTOMATION AND CONTROL OF TECHNOLOGICAL PROCESSES AND MANUFACTURES, CAD

Eliseev D. N., Kuznetsov I. I., Bratukhin A. G. — Digital technologies and equipment in the production of aviation gas turbine engines

The article discloses the Scientific and Production Center for Gas Turbine Construction "Salute" experience over the using modern digital technologies and highly efficient process equipment with programmatic control in the serial production of Russian competitive gas turbine engines. The production modernization allowed ensuring the maximum reduction in the timing of projects and high quality products with reduced labor intensity.
Key words: gas turbine engine, batch production, digital technologies, software control, product quality, labor intensity

ECONOMICS OF MACHINE BUILDING, PRODUCTION ORGANIZATION

Barzov А. А., Korneeva V. M., Feofanov A. N. — Probabilistic modeling of the expert-analytical analysis of innovation quality

Proposed a probabilistic approach to the construction of models of expert quality assessment innovation physico-technological profile. Dependence effect collectively analyzed data on the probability of expertise and appropriate action. Analytic installed efficiency examination procedure as a function of the quality of analyzed proposals and competence-the quantitative characteristics of the Group of experts. Formulated algorithm simulation Monte Carlo simulation procedure for expert analysis.
Key words: expert evaluation, innovative proposal, decision making, probabilistic approach, algorithm simulation

FOREIGN EXPERIENCE

Potapova G. S. — Content of foreign journals

INFORMATION

Prygaev A. K., Kapustin О. Е., Muradov O. E. — Faculty of Oil and Gas Engineering Mechanics (NRU) by name I. M. Gubkin — 75 years old

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