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STRUCTURAL MATERIALS, METAL SCIENCE

Gnyusov S. F., Makov D. A. — Structure-phase composition and abrasive wear resistance of austenitic composition coatings. Part 3

The article presents research results of the influence of structure-phase composition coatings based on the austenitic steel containing 10 % TiC or 15 % WC on the abrasive wear features. It was established that additional heat treatment or process combination of deposit welding and aging caused increase of the relative wear resistance factor of composition coatings by approximately 38—42 % for the manganous austenite-based coatings ((Fe — 20 % Mn — 4 % V —4 % Mo) + 15 % WC) and by 5—12 % for the nickel austenite-based ones ((Fe — 20 % Ni —4 % V — 4 % Mo) + 15 % WC).
Key words: composition coatings, carbide addition, austenite, tungsten carbide, titanium carbide, wear resistance

TECHNOLOGIES AND EQUIPMENT FOR MACHINING, PHYSICOTECHNICAL PROCESSING, NON-CUTTING SHAPING

Cherepakhin A. A. — Toothed gear production process as a multilevel technological system

The article discusses the general structure of technological process of manufacturing of gear wheels, its direct and inverse information and energy links. The properties of the considered multilevel technological system (integrity, plurality and multiplicity) allowed to develop a generalized crete-holder efficiency lying in the three-dimensional criteria box "cost — accuracy — performance".
Key words: gear wheel, system, process, performance criterion

Chepchurov M. S., Gorbachev I. A., Feofanov A. N. — Hole making in heat-resistant alloys with surface undulation control

The article provides a way to obtain a deep hole in the heat-resistant alloys with use of the special tool — flexible drawing. Authors present the original instrument of control surface obtained holes.
Key words: drawing, heat resisting alloy, opening, device of contactless definition of roughness of opening

Shalamov V. G., Smetanin S . D. — System approach and multi-variance of helical surfaces forming

On the basis of system approach we identified possible types of the helical surfaces forming tasks. Classification of these tasks allows forecasting of the shaping techniques development and mirrors advance of the helical surface forming theory.
Key words: system approach, helical surfaces, forming

TOOLING PRODUCTION

Krinitsyn D. A., Derevyanchenko A. G. — Automatic evaluation of the signs of wear zones and prognostication of the toolware residual life

The article describes development results of identification of the condition signs of the cutting tool deterioration zones. The data was obtained by periodic test using vision system. The suggested method allows for evaluating the current condition of the cutting tool and prognosticating its residual life.
Key words: wear zones, cutting tool, vision system

Dybino K. — Pinpoint accuracy in miniature

Radial runout of high precision tool and of high-frequency spindles is a well known problem. Particularly it applies to micromachining where microinstrument and spindles with high number of revolutions are used and where radial runout check is necessary to provide high quality and accuracy. With that end in view Schenck RoTec GmbH designed a new balancing machine Tooldyneμicro. Simple in operation this compact system is perfect for rotor balancing weighting up to 500 gram and for the tool up to 100 mm in diameter.
Key words: pinpoint accuracy, micromachining, radial runout

MACHINING-AND-ASSEMBLY PRODUCTION

Grigoryev V. S., Mironychev N. A. — Assembling-disassembling as a process of object shaping

General methodical grounds of building technological systems are presented. The role of assembling-disassembling while forming objects is reflected. Several technological systems are cited as an example that each process of changing form and structure of materials of an object follows the laws of succession of alternate processes of assembling-disassembling and vice-versa. It is set that every technological system when forming objects is characterized by three types of natural motions: main motion, feed motion and resulting motion.
Key words: assembling-disassembling, technology, system, process, information, stuff, energy

WELDING, RELATED PROCESSES AND TECHNOLOGY

Biryukov A. P., Mishachev A. P., Bardin A. I., Romanov A. V. — Investigation of the Forsazh welding set operation characteristic when supplying power by a portable off-line power source 

Electric power station operating conditions at feeding single-phase welding apparatus of the "Forsage-160, -160ÀÄ, -200" series and three-phase welding apparatus of the "Forsage" series are given. It is shown that feeding of the single-phase and three-phase devices by the mobile power plant as part of mobile welding station is safe.
Key words: "Forsage" welding apparatus, electric power station, output voltage, current consumption

SPECIAL TECHNOLOGIES

Komkov V. G. — Obtaining electrode materials for electrospark alloying of machine components

Obtainment conditions of such alloys as tungsten and chromium, tungsten and molybdenum by thermal reduction methods of scheelite concentrate with additions of oxides of alloying elements are studied. Charge makeup is established to ensure maximum extraction into alloy. Application of the alloys W—Cr, W—Cr—Mo for electrospark surface hardening of the machine components improves 1,5—2 times their wear resistance.
Key words: tungsten alloys, chromium, molybdenum, thermal reduction methods, scheelite concentrate, electrospark alloying

Ogolikhin V. M., Shemelin S. D. — Explosion cleaning process of cathodic shell

Cathodic shell is the metalwork major part of electrolyzers used in aluminium production. We experimentally confirmed a possibility of breakage and failure of the waste lining and technological remains to clean cathodic shells by blasting vertical spur charges. The suggested layout of explosion localization is functional; it allows carrying out demolition works on a limited area of the plant.
Key words: explosion cleaning, cathodic shell, cell, vertical blast-hole charge, explosion localizer, lining and technological remains failure

Amirkhanova N. A., Khamzina A. R. — Higher hot gas corrosion resistance of the gas turbine engine blades

The article covers investigations of gas turbine engine blades electrochemical treatment application and further electrochemical polishing to achieve higher hot gas corrosion resistance.
Key words: electrochemical polishing, corrosion resistance, corrosion rate

TESTING AND DIAGNOSTICS METHODS IN ENGINEERING INDUSTRY

Syasko V. A., Ivkin A. E. — Precious metal coatings thickness gauging using vortex eddy-current testing

The article describes mode of operation of a device to gauge thickness of precious metal coatings using eddy-current testing.
Key words: eddy-current testing, coating, thickness gauging, precious metals

PROCESSES AND PRODUCTION AUTOMATION AND CONTROL, CAD SYSTEMS

Nikolayev P. M. — Milling tool-path checking and correction algorithm relative to product working surface

Gouge check and removal algorithm for mill machining is covered. The algorithm is based on calculation of mutual positions of tool and detail. A triangulated surface representation is used. The possibilities of optimizing the speed of the algorithm using dimensional checks are offered.
Key words: cutter, gouge check, mill tolerance

MATHEMATICAL MODELLING, CALCULUS OF APPROXIMATIONS AND SOFTWARE SYSTEMS

Sokolov Yu. A., Kopayev V. N. — Mathematical model-based investigation of the layerwise melting of the two-component mixture WC—Co

The authors offer a model to determine characteristic of the layer-wise melting process by electron beam.
Key words: mathematical modelling, synthesis of products, electron beam, mass carry, heat transmission

ECONOMICS AND PRODUCTION ORGANIZATION

Bukhalkov M. I. — Economic feasibility methods of innovation projects’ efficiency

The methods of economic evaluation of innovation are showed. Recommendations to select an appropriate effective and innovative projects and the practical examples of calculation of economic indicators are given.
Key words: innovative project, methods of economic estimation, annual effect, time of recovery of outlay

EDUCATION AND PERSONNEL TRAINING

Smolkin A. A., Ukolov M. S., Batyshev K. A. — Computer test check of knowledge in manufacturing engineering

Issues of using information communication technologies for computer test check of students’ knowledge in manufacturing engineering are considered. Examples of test tasks are given.
Key words: computer test, forms of test tasks, ICT

FOREIGN EXPERIENCE

Potapova G. S. — Review of the foreign journals

INFORMATION

Suslov An. A. — The 17th Moscow International Salon of Inventions and Innovation Technologies "Archimedes—2014"

Exhibitions in October—December, 2014

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