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	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Contents (�3 2013)
to russian

SCIENTIFIC-TECHNICAL SECTION

Shakhmatov D. M. � Risk estimation of brittle fracture in dissimilar joints

The recommendations were provided for structural and technological design of diverse compounds in the form of optimal selection of the joint angles, depending on the ratio of the shear modulus and Poisson�s ratio, ensuring the absence of stress concentration in dangerous corner points. The assessment of brittie strength of diverse compounds with high siress concentration in the corner points based on the criteria of fracture mechanics was proposed.
Key words: deverse compounds, ratio of the shear modulus, Poisson�s ratio, stress

Zaytchenko Yu. A., Mamykina A. Yu., Ferapontov A. N. � Application of induction surfacing technology to increase components� service life of the rolling stock

Wear reduction of the operated hardware components is one of the main industrial tasks. Application of the method described in the article began in the 1980th in rail transportation where the issue of wear was particularly burning. After the method has been tested and implemented they succeed in overhaul life increase of one assembly (e.g. an automatic coupler) from 2 months to 3 years and more. And that�s not a limit. Having appreciated advantages of the method, leaders of the RF Department of Transport introduced this method at carrying out scheduled types of carriage repair in depot and works aimed at increasing overhaul life of passenger equipment.
Key words: component, coating, induction surfacing, layer

Gnyusov S. F., Durakov V. G. � Influence of titanium and tungsten carbides on structure formation and properties of composition coatings. Part 2: Structure-phase composition of the coatings steel �6�5�TiC

Results of structure-phase composition formation features of the composition coatings steel �6�5�Ti� depending on titanium carbide content are covered. It is established that quantity of the retained austenite in the hardened layer, when 5 % of titanium carbide has been already introduced, does not exceed 5 % of the matrix total volume. Reduction of titanium carbide particles� average sizes and of volume fractions takes place at structure analysis from the top to the lower part of the surfacing.
Key words: multiplex coating, structure-phase composition, surfacing material

Bulkov A. K., Peshkov V. V., Petrenko V. R., Balbekov D. N., Stryguin A. I. � Influence of process-dependent parameters on the diffusion welding of titanium

Investigation results of the influence of the conditions characteristic and of welded work-pieces microstructure on the advancement of welding process and on diffused joint quality for the titanium samples from the alloy BT14 are described. It is established that joining formation is controlled by contact surfaces activation and by the progress of the volume interaction stage or by development of the physical contact depending on combination of work-pieces� microstructure and welding temperature.
Key words: diffusion welding, titanium alloys, physical contact, relative strength, characteristic of welding conditions

Frolov V. A., Konkevich V. Yu., Predko P. Yu., Belotserkovets V. V. � Friction stir welding of the heat-treatable alloy �95 of the Al�Zn�Mg�Cu system

Structure, tensile and corrosion properties of the Friction Stir Welded joints of the Al�Zn�Mg�Cu System B95 type alloy have been investigated. In spite of the B95 type alloy is "unweldable" alloy, FSW process provides high quality and high tensile strength of the welded joints. Ageing after welding provides improvement of the SCC resistance. Result from weld nugget investigation authors made conclusion that formation of the ultrafine equiaxial grains is result of secondary dynamic polygonization rather than dynamic recrystallization.
Key words: FSW, weld, nugget, strength corrosion, structure, polygonization, recrystallization

PRODUCTION SECTION

Gavrilov S. N., Khitsov O. V., Dmitriyev V. B., Popravka D. L., Lozovoy V. G., Dzyuba V. M. � Metal covered wire for mechanized and automatic welding in shielding gases of low-carbon and low-alloyed steels

Advantages of the metal covered wires as compared to solid wire or the powder ones are established, as well as utility of their application in antiseismic construction, shipbuilding, bridge engineering, motor industry, at high-pressure vessel production, surfacing, et al.
Key words: metal covered wire, mechanized welding, automatic welding, welding materials

Vasilyev A. S., Kondakov A. I., Shiganov I. N. � Surface wear resistance assurance of high-precision parts in heterogeneous technical structures using laser quenching

Results of research aimed at search for conditions of efficient use for heterogeneous technical structures of the type machining � laser quenching to assure wear resistance of the executive surfaces of high-precision parts are covered. It is shown that wear rate of the surfaces, exposed to laser quenching by continuous wave lasers without flashing, is much lower than that of the surfaces, manufactured by standard technology.
Key words: laser quenching, wear resistance, high-precision parts

Sidlin Z. A. � Manual arc-welding electrodes for the alloy �� 937 �� (��40��)

Key specifications of the industrial domestic and foreign electrode brands are described, i.e. chemical composition and mechanical properties of the weld metal.
Key words: manual arc welding, electrodes, added metal, corrosion test

Karguin V. A., Tikhomirova L. B., Abramov A. D., Galay M. S. � Influence of shock-vibrating machining on physical-mechanical properties of the surface layer of metal welds

An example of hardened layer formation on the surface of a railhead weld by the vibroimpact strengthening method using percussion electromagnetic machine is given. Research techniques and results of the vibroimpact strengthening effect on the physical-mechanical properties of the metal welds are described.
Key words: weld, vibroimpact strengthening, impact machine, microhardness, strengthening depth, local fatigue strength

EDUCATION & PERSONNEL TRAINING

Frolov V. A., Fedorov S. A. � Some aspects of a technical university activity on competency approach adoption into educational practice of personnel training

The article examines the main aspects implementing of competency approach in higher vocational education.
Key words: educational programs, countinuing education, competence, innovative educational technologies, third-generation Federal Educational Standard, competency approach

INFORMATION

Ivanov A. N. � The 6th International specialized exhibition "Termoobrabotka�2012"

Anniversary of the equipment and welding production engineering department of the Volgograd State Technical University

Vikhman V. B., Sharapov M. G. � The 2nd International scientific-and-technical conference "Welding materials'2012" (Petranyevskiye readings)

BIBLIOGRAPHY

Contents of the foreign journals on welding

RF patents for the inventions in the field of welding

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D. L. Popravka

V. V. Chernykh

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