Journal "Svarochnoe Proizvodstvo"ISSN 0491-6441
Contents (11 2013)
to russian


SCIENTIFIC-TECHNICAL SECTION

Labur T. M., Zhernosekov A. M., Yavorskaya M. R., Pashulya M. P. Pulsed metal-arc welding of aluminium alloys with adjustable pulse shape

Results of manufacturing capability research of pulsed metal-arc welding of aluminium alloys with pulse shape control are described. Mechanical properties of butt joints of such aluminium alloys as 6, 5, 16 and 1915 are determined. It is established that the designed high-functional welding equipment with welding current pulse shape control may be efficiently used to weld aluminium alloys of different alloying systems.
Key words: aluminium alloys, consumable electrode, pulsed arc welding, power supply, pulse shape, welded joints, mechanical properties

Semenov V. N. Model of physicochemical interaction between alloy 202 and copper-silver brazing alloy, and bond strength on the interface

An interaction pattern of the NiCr-based compound alloy and copper-silver solder is worked-out. The pattern allows for estimating selective affinity of separate alloy components, Ni in particular, with components of solder on atomic level.
Key words: soldered structures, compound alloy, solder, physicochemical properties

Ostsemin A. A., Shmatkov A. S. Strength of welded joints with asymmetric mechanical inhomogeneity at static loading

Research results of the stressed state with an asymmetric mechanical inhomogeneity of the welded joint at static loading are covered. Computational formulae of stress tensor of mean ultimate stress on contact surfaces are obtained, which conform well to experimental data.
Key words: welded joints, strength, static loading, soft interlayer

Gladkov E. A., Perkovsky R. A., Kiselev O. N. Contactless sensor of penetration at arc welding

Construction theoretical grounds of a contactless sensor of penetration at arc and plasma welding, functional diagram of the sensor, structure and exterior view, as well merits of the designed device are described.
Key words: contactless sensor, penetration, plasma welding, arc welding, welded seam, arc radiation, spectrum, photodetectors, light filter

Bulkov A. B., Peshkov V. V., Balbekov D. N., Nebolsin S. M., Maltsev G. V. Diffusion welding of titanium feedstock through interlayer with high resistance to deformation

Deformation progress research results of the titanium laminar interlayers, which are between rough workpieces from an alloy with globular (equiaxial fine-grained) structure, under conditions of diffusion welding are described. It is shown that when thickness ratio of a laminar workpiece reduces, its creep rate steps up; conditionally termed as softening. Expressions to estimate softening coefficients of workpieces with lamellar structure depending on their thickness ratio and applied pressure are obtained.
Key words: diffusion welding, titanium alloys, deformation, contact softening

PRODUCTION SECTION

Rudzey G. F. Effect of welding defects and of the repair pass number on fatigue resistance of aluminium welds

Research results of different welding defects influence on fatigue resistance of welded joints are covered, which allow standardizing defects taking into account strength characteristics.
Key words: welding defects, fatigue resistance, aluminium alloys

Komkov V. G. 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 WCr, WCrMo for electrospark surface hardening of the machine components improves 1,52 times their wear resistance.
Key words: tungsten alloys, chromium, molybdenum, thermal reduction methods, scheelite concentrate, electrospark alloying

Volkov S. S. Effect of the ultrasonic seam welding conditions of polymer films on seam formation and process flow

A procedure of ultrasonic welding of film materials is developed. It is shown that characteristic determining production rate of the ultrasonic seam welding of the polymer slivers are amplitude of oscillation, welding pressure, welding rate and the length of the coupling butt end along the direction of welding. It is established that as the contact spot length extends seam welding rate increases linearly.
Key words: ultrasound, production rate, pressure, amplitude of oscillation, waveguide-tool, polymer films, durability

ECONOMICS AND PRODUCTION ORGANIZATION

Khomenko V. V. Technological realizability of design and engineering decisions aimed at upgrading high-technology projects

The analysis of technological features of design and technologicai solutions aimed at improving the quality of high-tech prooycts is made and the concept of technological reahzability is formulated.
Key words: design and technological solutions, improving the qualite, high-tech projects and products

EDUCATION & PERSONNEL TRAINING

Grigoryants A. G., Fedorov B. M., Taksants M. V., Misyurov A. I. Training concept of specialists at the "Laser technologies in machine building" Department of the Bauman Moscow State Technical University 

Fundamentals of training of specialists at the Laser technologies in machine building Department of the Bauman Moscow State Technical University are covered. Specific character of the approach to the specialists training at the Department is that along with the conventional polytechnic education its research and practical components are intensified with individual approach to students education.
Key words: education, individual approach, engineer, specialist, scientific research

INFORMATION

Psakhye S. G., Sarayev Yu. N., Lebedev M. P., Sleptsov O. I., Golikov N. I., Kapitonova T. A. International scientific and technical workshop "Ways of operational reliability improvement of large-size high-duty metalware when used under difficult climatic conditions of the Extreme North and the Arctic"

Ivanov A. N. The 14th International forum "High Technology of I2013"

BIBLIOGRAPHY

Contents of the foreign journals on welding

RF patents for the inventions in the field of welding


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