e7

	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Contents (�7 2012)
to russian

SCIENTIFIC-TECHNICAL SECTION

Sudnik V. A., Erofeev V. A., Maslennikov A. V., Slezkin D. V., Tsvelev R. V. � Mathematical model of submerged arc welding process and phenomena of arc cavity

A transient mathematical model of the submerged arc welding process with the hydrostatic statement description of its basic physical phenomena has been presented for the first time. The special attention is given to the physics of the arc cavity. A comparison between the calculated and experimental data has shown their good correspondence.
Key words: mathematical model, submerged arc welding, arc cavern, heat transfer by radiation, deformable weld pool surface

Donchenko E. A. � Heat dissemination process at beading of solid piece

A possibility of correcting N. N. Rykalin known equation to calculate spot temperature in the welding area is shown to factors related to the fusion of the basic metal.
Key words: fusion heat, overheat, heat, area fusion, isoterma, coefficient of thermal efficiency

Zeer G. M., Zelenkova E. G., Koroleva Yu. P., Mikheev A. A., Prokopyev S. V. � Diffusion welding through intermediate layers

The review of papers devoted to the application of interlayers in diffusion welding was presented. The classification of interlayers for the diffusion welding of heterogeneous materials was suggested. The role of interlayers ad their contribution to the formation of a junction at all stages of the welding was considered.
Key words: diffusion welding, interlayer, transition zone

Shirshov V. S. � Research of parameter influence of surface preparation of metal constructions on coating cohesive strength with foundation

The research results of the surface preparation of metal constructions for the plasma spraying of coatings are shown. The practical recommendations of the choice of surface treatment parameters by thermoabrasive instrument for plasma spraying are given.
Key words: plasma spraying, coating, surface preparation, cohesive strength

Myamin S. V., Chermashentseva T. V., Kovtunov A. I. � Zinc influence on liquidphase processes of aluminizing of steel

The zinc influence on the processes of aluminium wetting and spreading on the steel surface is researched. The zinc influence on the thickness of intermetallic layer which formed during liquid-phase aluminizing of steel and on the adhesive strength of layers is established.
Key words: laminated composite materials, steel, aluminium, wetting, spreading

PRODUCTION SECTION

Meyster R. A., Meyster A.R. � Features of arc striking and arcing in low current at carbon dioxide welding

The methods improving arc striking with the wires of minor diameter and ensuring the weld formation at the current of 10 A with minimum melting and spatter losses are considered.
Key words: MIG welding, arc initiation, low current, metal transfer, sputtering

Tsumarev Yu. A., Ignatova E. V. � Substantiation of choice of brazed joint construction

The research results of the comparative analysis of the carrying capacity of the brazed lap joints and brazed double-strap joints of different kinds are given. It is shown that brazed double-strap joints ensure the load-carrying capacity higher than lap joints. The constructions of brazed joints with disc straps as well as in the form of ball segments which have low material capacity are suggested.
Key words: brazed joint, lapping, eccentric tension, flexural stress, disc straps, ball segment

Ogolikhin V. M., Shemelin S. D. � Method of flexible current lead making by explosion welding

The construction of a flexible current lead making it possible to reduce electric power losses considerably on external and internal electrical contacts of the current lead in high power electrical installations which can work at the temperature to 500 �C is suggested. The method of flexible current lead making is developed. This method ensures the local explosion welding on the ends of an assembled pack out of flexible metal strips with the quality joint formation of an accelerated plate with the unlimited number of flexible metal strips and the welding on the ends of each previous strip with following and accelerated plates in the areas exceeding the cross-sectional areas of strips.
Key words: flexible current lead, explosion welding, electric power losses, construction

Ivannikov A. A., Fedotov V. T., Sevryukov O. N., Kalin B. A., Suchkov A. N., Logvenchev I. S., Fedotov I. V. � Brazing of reactor ferritic-martensitic steels by hardened amorphous ribbon solder based on Ni

A solder for the brazing of ferritic-martensitic steels is developed. The technology for obtaining the alloy of the solder based on Ni in the form of an amorphous strip is well-tested. The brazing of steels ��-450 ��, ��-823 is performed using this solder. The regularities of brazed seam formation are discovered in the obtained joints. The results of the brazing of prototype fuel elements made of steels ��-139 � ��-823 (��-450 ��) are given as well as the results of the mechanical shearing test of brazed joints.
Key words: brazing, ferritic-martensitic steels, amorphous solder, strength

Kilin P. I., Kilin K. P. � Device for effective exhaust ventilation of welding posts

The technological welding process is considered. The calculation of the number of extract air from the point high-temperature source is performed. The constructive devices of the localization of hazardous emissions and the apparatus of deep polluted air treatment for powdered and gaseous hazardous substances are described.
Key words: exhaust ventilation, welding posts, hazardous substances, device

EDUCATION & PERSONNEL TRAINING

Frolov V. A., Fedorov S. A. � New approaches to content of higher professional 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

INFORMATION

Suslov An. A. � Innovative materials and technologies

BIBLIOGRAPHY

Contents of the foreign journals on welding

RF patents for the inventions in the field of welding

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