Journal "Svarochnoe Proizvodstvo"ISSN 0491-6441
Contents (№12 2012)
to russian


SCIENTIFIC-TECHNICAL SECTION

Kozyrev N. A., Igushev V. F., Kryukov R. Ye., Goldun Z. V., Kovalsky I. N. — Influence of carbon-containing and fluorine-containing additions to flux composition on content of nonmetallic impurities and on weld properties 

Experimental researches have shown that the supplement of CF-additive in an amount of 3—10 % in the oxidative flux AH-348A contributed to obtaining the welds with a low content of nonmetallic inclusions and the high values of mechanical properties, especially impact strength.
Key words: automatic arc welding, electrode wire, flux, nonmetallic inclusions, mechanical testing

Krasnykh V. Yu., Grigoriev V. A., Patrushev A. N., Tolmachev Ye. M., Korolev V. N. — Dimension estimation of heat affected zone at welding of gas pipeline elements

On the basis of the analytical decision supported by experimental data, dependences for definition of the size of a heat affected zone are received at multilayered welding circular connections of the gas pipelines. Knowing the size of this zone is necessary to assess the feasibility of application of cold cuts at culling elements gas pipelines because of defects of circular welded joints or weld of the adapter rings adjacent to it.
Key words: gas pipeline, heat-affected zone, welding, welded connection, calculation, dependence, experiment

Sarayev Yu. N., Bezborodov V. P., Durakov V. G., Dampilon B. V., Orishich A. M., Ulyanitsky V. Yu. — Modified structures of compositions with protective coatings by alloying and high-energy influence

The research results of the influence of laser, electron-beam and electric arc effect on the modified structures, physico-mechanical properties and performance attributes of coatings are given. The possibility of hardening of composite coatings by means of modifying them by refractory joints with submicrocrystalline and nanocrystalline structures and by high-energy methods of influence is established.
Key words: modifying, structure, coatings, alloying, high-energy influence

Shtrikman M. M., Kaschuk N. M. — Research of technological parameters of friction welding with disk tool

The research results of influence of technological parameters of the friction welding with disk tool process on the formation of a root seam are given. The dependence connecting the faultiness of a joint with the process parameters is established. The calculating scheme for the analytical calculation of heat fields at friction welding with disk tool is suggested.
Key words: friction welding, disk tool, rale of travel, rotation speed, temperature distribution

Novokreschenov V. V., Rodyakina R. V. — Kinetics of particle interactions in penetration channel at electron-beam welding

The results of the analysis of the kinetics of processes arising at the electron flow of an electron beam on the channel are given. The estimation of the ionization rate constant characterizing a number of interactions between particles in the cross section of the electron beam (penetration channel) is performed as well as the estimation of the value of the charge which can be formed in the ionized steam phase of the channel.
Key words: kinetics of the interaction of particles, penetration channel, electron-beam welding, ionization rate constant

Peshkov V. V., Bulkov A. B., Safonov S. V., Petrenko V. R., Balbekov D. N., Kireyev L. S. — Mechanism of joint forming at diffusion welding of titanium

The hypothesis about the role of internal stresses in the mechanism of forming the diffusion joint is formulated and proved. This hypothesis consists in activation of welding surfaces as well as in formation of microreliefs in the contact area which divide the contact gap in line of considerably smaller pores and in creation of centers in the gap around which sintering processes can develop without external compressing pressures.
Key words: diffusion welding, titanium alloys, deformation, physical contact, microrelief, sintering

PRODUCTION SECTION

Novikov O. M., Persidsky A. S., Radko E. P., Khasyanov B. A., Samokhin I. A., Tazetdinov R. G., Zabolotnov V. M. — Presicion arc welding of high-pressure vessels with alternating pulse feed of protective gases

The technology of arc welding with alternating discrete-pulse feed of different gases — argon and helium is suggested. This technology ensures the improvement of mechanical properties in strength and plasticity of joints, the obtaining of qualitative welds of required dimensions and forms, the elimination of inadmissible deformations, the stability and productivity of the process. The universal and effective method of control of welding arc energy parameters is developed as well as gas equipment — gas feed regulators for which RF patents are taken out.
Key words: arc welding, protective gas, discrete-pulse feed, technological process

Petryakov B. I., Sakovtseva V. N. — Apparatus for electroarc hardening by indirect arc surfacing of nanocermet of parts working in the conditions of abrasive wear

The high-voltage device as the source of is concentrated the thermal energy intended for hardening of details, tillage and other technics working in the conditions of abrasive wear, ceramic welding by composite materials is presented.
Key words: the concentrated source electric energii, voltage, indirect arch, graphite electrodes, generator of the raised frequency

Bazhanov A. V., Gornostayev I. N., Stepanov V. V., Fedorov S. A. — High-temperature soldering of base load-bearing constructions of on-board equipment

Design features and types of solder joints housing units on-board equipment of aluminum alloys are considered. The technological process of brazing in electric ovens is developed and identify unacceptable solder joints defects to be corrected are defined.
Key words: the device case, solder joint, aluminum alloys, technology of brazing, the electric oven, solder joints defects

Kufaykin A. Ya. — Influence of heating modes on stability of titanium shells in composition of soldering conical sections

The origin of bucling of thin-walled titanic shells in brazing conical sections wos investigated. Calculations of the pressing force, which influences the shell in conditions nonuniform heat, and critical force on reaching that shell loses the stability and bucling is produced, was completed. Experimental heats of the sections had discovered adequacy of calculations and practical conditions appearance of the bucling. The algorithm of mathematical basing of heating without buckling formation is reduced.
Key words: brazing of titanium, thin-wall shells, nonuniform heat, loss of stability, prevention of bucling

Perminov N. I., Tokmakov D. A. — Application of amorphous solder CTEMET 1101 at soldering of parts of electrical devices and apparatus ВВЭР-1000

The results of application of the amorphous solder CTEMET 1101 at the soldering of shunts for electron electricity supply meters and of silver-containing ceramics (90 % of silver) to the copper base are given.
Key words: soldering, solder CTEMET 1101, brazed seam

EDUCATION & PERSONNEL TRAINING

Korshunov S. V., Maslov B. G. — Methodology of assessment of professional qualifications in machine building

A quantitative method of estimation professional level is worked out for machine-building specialists.
Key words: certification, educational standards, professional competents

INFORMATION

Ivanov A. N. — 13d International exhibition Metalworking’2012

* * *

Z. A. Sidlin is 70 years old

BIBLIOGRAPHY

Contents of the foreign journals on welding

RF patents for the inventions in the field of welding

Alphabetic index of the articles published in 2012


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