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	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Contents (�3 2014)
to russian

SCIENTIFIC-TECHNICAL SECTION

Schetinina V. I., Schetinin S. V. � Magnetic field control of welding arc

It is established that electrode form significantly influences on the magnetic field of the welding arc. When welding speed and concentration increase and arc diameter reduces, the magnetic field of the welding arc grows. This corroborates electromagnetic theory of undercutting formation.
We worked out magnetic field control method of welding arc due to using of composite electrode, which ensured arc motion along the electrode end in longitudinal and transversal directions, area extension of the arc motion, deconcentration, reduction of magnetic field induction and of down-directed electromagnetic force and magnetic pressure, seam formation of high quality at one-sided high-speed welding with melt backing, cutting-down power intensity and materials consumption of the process.
Key words: welding arc, magnetic field, pinch effect, magnetic pressure, undercutting, high-speed welding, composite electrode

Krampit N. Yu., Krampit M. A. � Pulsed arc welding with stick-out distance heating in pause

The article shows method of pulse welding heated electrode in pause. Shows the influence of the distance between the contact tips on the melting rate.
Key words: pulse arc welding, device, heated, stick-out

Posh G., Holtsinger V., Bychkovsky S. L. � Railway car welding: Tasks in the field of materials, processes and automation

This paper discusses key points of the ongoing material development and gives an overview about latest achievements in the welding process technology development especially in respect to weld quality improvement and redaction of weld distortion by minimizing the heat input. Also some realized Fronius application concepts for welding rail vehicles will be shown.
Key words: welding, automation, technologies, rail vehicles, welding deformation

Fomichev Ye. O. � Monowheels' restoration techniques by electron-beam welding of repair insert

A restoration technique of gas-turbine engine monowheels by electron-beam welding of repair shell was developed.
Key words: electron-beam welding, monowheel, repair insert, technique

Fedotov I. V., Suchkov A. N., Fedotov V. T., Sevryukov O. N., Kalin B. A., Ivannikov A. A. � Brazing of hexagonal boron-nitride ceramics and titanium alloy �T1-0 by the rapid-chilled titanium-based braze

To braze boron-nitride ceramics and titanium alloy �T1-0, braze was obtained in the form of nano-structured rapidly hardened tape. Wetting ability of brazes of the Ti�Zr system of boron-nitride ceramics was estimated. Surface X-ray and topographic analyses of the braze tape, microstructure and mechanical tests of the brazed �T1-0 - boron-nitride ceramics joints were carried out.
Key words: brazing, boron-nitride ceramics, titanium alloy, rapid-chilled braze

PRODUCTION SECTION

Lyalyakin V. P., Aulov V. F., Ivanaisky V. V., Krivochurov N. T., Ishkov A. V., Koval D. V. � Induction surfacing features of long-measuring soil cultivating elements of farming and road-making machines

It is established that heating rates of charge mixture and of the surface of a long-measuring part mismatch at induction surfacing of hard metal. This causes quality loss of the strengthening coating, violate condition of heat removal and favours increase of the least wear-resistant fraction of hypoeutectic coating area. An inductor for one-sided automatic surfacing of long-measured operating members of farming machines was worked out and manufactured; procedure and conditions of hard-surfacing were selected.
Key words: surface hardening, high-frequency heating, hard alloy, operating members of farming machines, automatic technology, wear

Tsumarev Yu. A., Tsumarev E. N., Ignatova E. V., Latypova E. Yu. � Stress concentration reduction in welded joints by soldering

A technique of stress concentration reduction in welded joints is suggested. This method is based on use of soldered-on surface in the heat-affected zone from the material, which fusing temperature and elastic modulus are less than those of the parent material. It is shown that the most efficient material for soldering-on is zinc, application of which allows not only 27 per cent decrease of the maximum joint stress as compared to the known method providing surfacing of an additional bead by coated electrode, but also it allows improving wear-resistance of the joint, as well as reducing thermal influence on the joint and causing respectively lower power inputs.
Key words: welded joint, stress concentration, surfacing, coated electrode, soldering, elastic modulus, corrosion resistance

Shtrikman M. M. � Progress trend of the rotating-rod friction welding process

An analytical survey of development, investigation and industrial application of the rotating-rod friction welding of linear joints of plate-type structures are covered. Progress trend of the process is analysed, including research and practical development, joining alloys of aluminium, titanium, and steels, material and design of welding installations, etc.
Key words: friction welding, steel-plate structures, aluminium, titanium, steel

Volkov S. S., Shestel L. A., Sokolov V. A. � Technology and equipment for ultrasonic welding of produce from polyethylene terephthalate film

In the technology of ultrasonic seam welding of polyethylene terephthalate film. Designed and manufactured ultrasonic welders and waveguides with the spherical shape of the working face. The analysis of the amplitude-frequency characteristics of the speakers. The dependence of the strength of welded joints frequency welding pressure, welding speed and amplitude of ultrasonic vibration.
Key words: elastic container, film, frequency, durability, pressure, amplitude, waveguide, ultrasound, tightness, joint

Khorev A. I. � Theory and practice of application of weldable high-strength titanium alloy �T23 in rocket space complex "Buran" and aircraft �-50

Fundamental and applied work package aimed at creation of high-strength titanium alloys �T23, �T23M, �T43, their manufacturing techniques and component production for aircraft, rocket and space technology at engineering plants is carried out. Theories of complex alloying, microalloying, thermal and thermomechanical treatment, textural strengthening, designing composite materials with external and internal reinforcement by high-strength fibres, multilayer and clad composites are developed. Results of these works were used at creating "Buran" and aircraft �-50.
Key words: titanium alloys, complex alloying, microalloying, thermomechanical treatment, textural strengthening

BIBLIOGRAPHY

Contents of the foreign journals on welding

RF patents for the inventions in the field of welding

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