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STRUCTURAL MATERIALS, METAL SCIENCE

Volkov G. M. — Materials science conception of domestic engineering industry re-equipment

For creation the fundamentally new engineering products proposed materials technology, whose properties are many times higher than the world average as a results of realization possibilities of nano-sized states of substance.
Key words: bulk nanomaterials, one-stage technology, technical capacity, ability for bio-engineering, system of carbon—carbon

BLANK PRODUCTION

Routsky D. V., Zyuban N. A., Galkin A. N., Konovalov A. S., Poslamovskaya Yu. A., Puzikov A. Ya. — Quality analysis of tubular billet from forge ingot with different feeder heat insulation

Results of structural, physical and chemical inhomogeneity investigation of oblong ingots up to 1.4 tonne from 38ХН3МФА steel with cold deadhead are covered. These ingots are intended for tube shell operation. Comparison of the obtained data with the one of the analogous ingots classically manufactured is shown.
Key words: tubular billet, structural, physical and chemical inhomogeneity, shrinkage hole

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

Ivanov V. S., Ivanov D. V. — Analysis of bi-rotor machine configuration for edge cutting round-profile parts with discrete-slot surface texture

On the basis of manufacturing capability analysis of series-produced turn/mill it is established that these machines are to be updated in order to be used for round-profile parts production with discrete-slot surface texture. Machine configuration stages are described. Formalization first principles of the kinematic structure showing quantitative and qualitative structure of the machine movable blocks, conjugation technique (sequential or parallel) and coordinate belonging are stated.
Key words: turn/mill machine, edge cutting machining, surface texture, updating

Demidov V. V. — Efficiency of gear milling by involute hobbing cutters with teeth rational geometry by force test

3D-images of the work material cut-off layers are obtained by computer simulation method of the spur gear milling process kinematics, gear milling has been carried out by involute hobbing cutters with teeth of different profiles. A new practically feasible profile of mill cutters is offered. Measured results of cutting force components at gear milling by involute hobbing cutters with both offered teeth profile and positive rakes and by cutters with only positive rakes are covered.
Key words: involute hobbing cutter, cutting pattern, shape of the cut-off layer, mill rake, cutter force, mill stability period

Terekhov V. M., Kondratenko L. A., Vinnikov V. S. — Forge-rolling force interaction

Force interaction in forge-rolling used for pipe fastening in tube plate of a heat-exchange apparatus is analyzed. Mechanics of the tube rolling process, roller and gudgeon interaction force characteristic are illustrated by construction of a forge-rolling. Software to calculate torsion torque on the tail of a forge-rolling used for fastening heat-exchange tubes up to 16 Ѕ 1,5 mm in size.
Key words: forge-rolling, force, torque, stress

TOOLING PRODUCTION

Bagayskov Yu. S. — Abrasive tools composite strength assurance

Results of investigating abrasive and interstice particles’ size and content effect on grinding tool composite strength are covered. Abrasive–binder-contact interaction features are considered, as well tool hardening means depending on the abrasive and binder particles’ sizes, on fine-grained filler introduction, on binder higher reacting activity.
Key words: composite material, abrasive tools, strength, reacting activity

MACHINING-AND-ASSEMBLY PRODUCTION

Rozinov A. Ya., Shatilov V. A., Logunov V. V. — Analysis of stressed state and thing-sheet design field joint strength when changing assembly and welding sequence

Research results of stress arising in the trimming and girders of the set of erection joints of constructions which were obtained at the traditional and changed succession of realization of the assembly-welding work are covered.
Key words: erection joints, state of stress, assemblage, welding, cyclical extension, cyclical bend

Beskrovny A. Yu. — Estimation of the joining edges deviations from theoretical line of the shell when carrying out hull erection joints

Shell joining edges’ deviations measuring technique at hull construction or repair is suggested. It allows determining maximum relative deviations.
Key words: joining edges, deviation, tolerance, hull

WELDING, RELATED PROCESSES AND TECHNOLOGY

Varlamov D. P., Steklov O. I. — Defects of corrosion cracking of circumferential welded joints of trunk gas pipelines in the two climatic regions of Russia

It is shown that extremely large quantity of anomalies of welded joints is the risk for safe operation of trunk gas pipeline system not only as possibility of destruction of welded joints but also as formation of the additional factor of origin and development of defects of stress corrosion cracking in the zone of intersection of longitudinal and girth welds.
Key words: pig-assisted inspection, stress corrosion cracking, anomalous girth welded joints

SPECIAL TECHNOLOGIES

Veselovsky A. A. — Optimum thickness determination of vanadic, chromic and manganese coating on the gears from high-duty cast iron

Estimation of vanadic, chromic and manganese coating critical thickness on gears from ВЧ60 high-duty cast iron is carried out. Regression dependences of teeth coating minimum thickness at which piercing will not occur in case of solid unbreakable particles may get into the contact area are obtained. Thickness upper limit bounding fatigue life of the diffusion layers is also determined.
Key words: cast iron gears, gear coating, critical coating thickness

Belousov V. P., Dianova N. G. — Stability design applied method upgrade

A simple applied method of stability design is suggested. In all the strength-of-materials text-books stability design applied method is conducted by method of successive approximations, whereas the suggested method allows obtaining end result at once.
Key words: stress, stability, bar cross-section

Khanakhmedova S. A. — Analysis of dynamic processes in the starter-generator complex

Results of starter-generator starter mode investigation are covered. Equations of stress equilibrium, of armature motion are given, as well as their transformations for analytical treatment; they are used for determining physics of electromechanical time constant. Transient start-up process of the starter-generator using analytical analysis which includes comparison of starter-generator behaviour with standard engines, belt drive crankshaft motion and effect of an internal combustion engine flywheel is considered.
Key words: starter-generator, rotating frequency, storage battery, off-side wheel, near-side wheel, driving wheel, shaft, pulley

METROLOGY AND MEASUREMENT ASSURANCE

Sufiyarova I. I., Nasratoollin E. M., Yanguirov I. F. — Higher metrological performance of the linear acceleration transducer

The original design of the converter of linear accelerations with additional use short circuited coil and performance on a coil of longitudinal cuts is resulted. Analytical parities with experimental acknowledgement of the last are deduced.
Key words: linear acceleration, ferromagnetic ring, sensitivity, steepness, electrospending short-circuited coil, cuts, pole

MATHEMATICAL MODELLING, CALCULUS OF APPROXIMATIONS AND SOFTWARE SYSTEMS

Iznairov B. M., Vasin A. N., Iznairov O. B. — Double-row ball bearing parts interaction mathematical model taking into consideration engineering errors

Shows that, in the build bearing may be three different cases contact phone rolling sound with footpath rolling sound-bearings. Received mathematical depending values clearances between objects and footpath rolling sound, footpath rolling sound, proposed an integrated criterion of quality bearings.
Key words: ball bearing double-row, clearance, contact angle, angle of skew, comprehensive test

PRODUCTION ORGANIZATION

Fiodorov V. K., Arkhiptsev S. A. — Foundations of organizing cooperation as a factor of risk decrease for WIP inventory origin in special engineering

Cooperation organization maxims ensuring work-in-progress origin risk decrease are considered.
Key words: cooperation, manufacturing, contract manufacturer, logistics

EDUCATION AND PERSONNEL TRAINING

Frolov V. A., Fiodorov S. A. — Recent approaches to the content of higher vocational education

The article is devoted to the problems education policy and to the questions connected with the transition of higher school to the two-level system of vocation training of scientifical and technical personnel.
Key words: third-generation Federal State Educational Standard, competency approach, bachelour degree, master degree, competence, guality of education

FOREIGN EXPERIENCE

Potapova G. S. — Review of the foreign journals

INFORMATION

Ivanov A. N. — International exhibition MITEX'2011

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