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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 2

The article presents research results of the thermal treatment influence on the formation features of structure-phase composition of composite coatings (Fe—20 % Mn—4 % V—4 % Mo) + + 10 % TiC and (Fe—20 % Ni—4 % V—4 % Mo) + 10 % TiC. The authors showed a possibility of forming multimodal size distribution of the strengthening phase in the volume of the austenitic matrix in the process of combining vacuum electron-beam deposit welding and heat treatment.
Key words: composite coatings, carbide addition, austenite, titanium carbide

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

Dyakonov A. A., Popova A. V. — Development and practical application of process and working certificates of internal grinding wheels

The authors analyse works covering certification of grinding tool. They gave grounds to selection of the characteristic for the complex of performance criteria for internal grinding wheels. Methodology of a registration certificate creation for an internal grinding wheel is described, which is illustrated by an example of developing registration certificate of an internal grinding wheel graphically.
Key words: internal grinding wheel, performance criteria, methodology, registration certificate

Jenek M., Szwarcburg L. E., Serebryakov V. I. — Coated cutter effect on the machined surface condition of hardened steel

The results of studies on the effect of varying the thickness of the surface coating of cutting tools deposited by PVD, on the roughness of the machined surface of hardened steel turning 40H and its performance.
Key words: coverage by PVD, turning of hardened steel, roughness of machined surface, process of turning, tribological characteristics

TOOLING PRODUCTION

Sinenko E. G., Konischeva O. V. — Characterization of out-of-line epicyclic machinery of planetary milling

Features of the epicyclical misalignment mechanism are considered, axes of their central tooth gears are displaced on set eccentricity. Four schemes of mechanisms with various kinematic possibilities and with a complex plane rotary motion of their output links are received.
Key words: mechanism, transfer relation, tooth gears, eccentricity, angular speed

MACHINING-AND-ASSEMBLY PRODUCTION

Penner V. A., Morgunov A. P. — Automatic assemblage features of a threaded joint union — compressor house pipe when locating on revolving rollers

Means to implement one of the basic directions of development of technology of mechanical engineering to increase productivity and production efficiency is the mechanization and automation of production, and the re-use of components, machinery and machine parts after repair and control.
Key words: mechanization and automation, repair, control

WELDING, RELATED PROCESSES AND TECHNOLOGY

Mironova L. I. — Model problem for estimating thermostressed state of welded components in shell structures

The article covers computation for mathematical modelling of cylindrical shell local heating. The model calculation allows for identifying residual stress level in the welded components of a structure with acceptable accuracy in engineering practice.
Key words: local heating, temperature field, thermostressed state, cylindrical shell, elastic energy, welded structure

SPECIAL TECHNOLOGIES

Nevrovsky V. A. — Regular convective heating mode of cylindrical and plane produce

The paper suggests simple formulas for temperature calculation of moving and resting plane or cylindrical workpieces, being heated by immersing into a hot medium. The formulas are valid when the workpiece temperature approaches to the medium temperature and a concept of a regular thermal regime is applicable.
Key words: heating, thermal conduction, heat exchange, regular thermal mode, melt, flat workpiece, cylindrical workpiece

Belov P. S., Draguina O. G., Nikiforov D. Yu. — 3D models creation technology and rapid prototyping production

The article considers a possibility of rapid prototyping of product pilot samples in engineering industry. A virtual 3D model was created in the CAD system "Kompas-3D" to prototype a sprocket. The ready CAD file was loaded into the application programme of 3D printer where code G of the product obtainment programme had been generated, and then the prototype printing was carried out and used.
Key words: prototyping, CAD system, application programme

Seliverstov A. I., Shevchenko I. V. — Procedure of reducing the quantity of identifiable parameters of a carrier rocket construction at its dynamic testing

A technique for reducing static subsystems rocket having a low mass per unit length, but with a complex structure constructive. Application of the method to reduce the number of identifiable parameters in dynamic tests of rocket.
Key words: rocket, identifiable parameters, reducing static, vibration frequencies, stiffness characteristics

METROLOGY AND MEASUREMENT ASSURANCE

Erokhin V. V. — Error computation of workpiece locating in fixture

Detailed techniques and mathematical formalizations of calculations of components of an error of basing of workpiece are given.
Key words: accessories, operational properties, quality

TESTING AND DIAGNOSTICS METHODS IN ENGINEERING INDUSTRY

Budadin O. N., Kutyurin Yu. G., Yukhatskova O. V., Mykhanov E. E. — Optimization of thickness gauging of rubber-like coating on manifold substrate using vortex-current mode of control

The suggested control method of a rubber-like coating on the stages of its fabrication on metallic mounting and emplacement on a dielectric product using vortex-current non-destructive method of testing allowed for providing the required reliability of the thickness gauging over the range of 20 mm and exclude the effect of nuisance parameters.
Key words: rubber-like coating, vortex-current method, non-destructive testing

PROCESSES AND PRODUCTION AUTOMATION AND CONTROL, CAD SYSTEMS

Fedotov V. K., Lutsenko A. V., Kucheyeva E. A. — Maxims of product life formation by CAD usage

The article deals with actual problem of constructing an automated system of technological preparation of manufacture of products of special mechanical engineering.
Key words: automated system of technological preparation of production, common information space

MATHEMATICAL MODELLING, CALCULUS OF APPROXIMATIONS AND SOFTWARE SYSTEMS

Ivanov V. A., Erkayev N. V. — Modelling of roller-plate contact if there is lubrication

The article describes a developed calculation procedure of the contact between a roller and an elastic plate of finite size, lubricant layer taken into account. The pressure was determined by solving Reynolds equation, and ANSYS software was used to compute deformation of surface. On the basis of pressure distribution calculation in the area of contact and of deflection of the surface a function of the working surface compliance in the form of Fourier expansion was defined. In order to reduce spurious oscillations (noise) of the compliance function specific smoothing coefficients were introduced. The authors showed the application of the obtained compliance function to solve the problem of elastic hydrodynamic contact iteratively.
Key words: compliance function, deflection surface, deflection of surface, roller, elastic hydrodynamic contact

ECONOMICS OF THE ENGINEERING INDUSTRY AND PRODUCTION ORGANIZATION

Khomenko V. V. — Efficiency valuation method of innovative constructive engineering decisions and projects under conditions of incomplete information

The concept of the effectiveness of innovative design-technological solutions and projects with incomplete information is formulated. The methods of assessing the efficiency area for cases of decisionmaking on their development or implementation in the three levels of the lack of information are offered.
Key words: efficiency area design-technological solutions and projects, level of the lack of information

EDUCATION AND PERSONNEL TRAINING

Frolov V. A., Fedorov S. A. — Improvement of student-lecturer interaction system under conditions of transferring to competency model of engineering skills training at higher education institutions 

The characteristics of a modern student of technical university are presented, consider the role of the teacher, the basic principles organization and forms and methods of constructive interaction of students and teachers.
Key words: technical university, subjects of educational process, principles of the organization of interpersonal, forms and methods of constructive interaction

FOREIGN EXPERIENCE

Potapova G. S. — Review of the foreign journals

INFORMATION

Suslov An. A. — The 16th International exhibition for machine-building and metalworking "MASHEX’2013"

Exhibitions in July—September, 2014

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