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"Welding and Diagnostics" Journal

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2. Corporate charter. Non-profit partnership National agency of welding equipment and materials producers.

7. Corporate charter. Non-profit partnership National agency of welding equipment companies-producers.

Scientific and Technical Part

12. V.F. Lukjanov, B.V. Sobol, A.A. Parhomenko

Experimental, numerical and analytical study of strain-stress distribution in welds of pipe connection sample type

17. A.V. Shipilov, V.A. Erofeev, V.V. Brovko, S.I. Poloskov

Computer analysis of factors for high-quality welds formation in small diameter construction steel pipe-line orbital welding

24. N.V. Kobernik, G.G. Chernyshov, P.P. Gvozdev, A.A. Linnik

Influence of current type and polarity on electrode and base metal during the hidden-arc welding

28. N.N. Potapov, N.S. Kolokolnikov, I.A. Kadigrobov, V.B. Penkov

About the quantity of gases on the metal zones of the weld with nonsteady behavior during the electrode welding

31. E.B. Votinova, M.P. Shalimov

Development of methods for calculations of welds metal composition during flux cored electrode or covered-electrode welding

36. V.S. Lebedev

Researches on pulsed argon-arc welding of DCI basic parameters influence on the weld geometric sizes

40. G.V. Konyushkov, A.Ya. Zorkin, V.G. Konyushkov, D.A. Milyavskii

Welding of metals with non-metals using electrically exploding streaks in vacuum

44. V.V. Pankov, V.M. Bukin, S.V. Pankov, L.M. Gurevich, U.P. Tryikov

Development of mathematical model of self-fluxing alloy coat forming on the basis of Ni-Cr-B-Si during gas powder spattering with burning-off

Production Part

49. N.P. Alyeshin, E. A. Gladkov, A.I. Gavrilov, R.A. Perkovskii, T.A. Rahmatullin

Realization of adoptive pipe-lines circular joints welding technology

54. B.E. Paton, V.A. Lebedev, C.Yu. Maksimov, V.G. Pichak, S.I. Poloskov

Improvement of the equipment for flux cored electrode underwater machine and automatic welding and cutting

60. S.N. Sapolskih

Energy inductive storage in welding engineering

UDC 621.791.052.539.4.014

V.F. Lukjanov, Dr.- Ing.,

B.V. Sobol, Dr.- Ing.,

A.A. Parhomenko, PhD in Engineering Science

Don Sate Technical University

parkhomenko@spark-mail.ru

Experimental, numerical and analytical study of strain-stress distribution in welds of connection pipe type

There are the results of the research on the voltage distribution character in welds of connection pipe type. It was conducted taking into account the analytical approach, numerical studies and full-scale experiment. The possibility of connection pipe longer life-cycle was shown. It mignt be prolonged from 1.5 to 4 times, by means of macrogeometry connection changes. As for the technology of weld to the basic metal transitional zone additional remelt in argon with lateral vibration , it allows to achieve the connection of the same life-cycle as of the basic metal

Key words: welded interconnection with bias welds, stress state, strength, life cycle, calculation.

UDC 621.791:621.643.1/.2

A.V. Shipilov, Ing.

(DOAO Zentrenergogaz, OAO Gazprom),

V.A. Erofeev, PhD in Engineering Science

(TulaStateUniversity),

V.V. Brovko, PhD in Engineering Science,

S.I. Poloskov, Dr.- Ing.

(Welding and Control Scientific and Technical Centre at MoscowStateTechnicalUniversity n.a. N.E. Bauman)

a.shipilov@ceg.gazprom.ru

Computer analysis of factors for high-quality welds formation in small diameter construction steel pipe-line orbital welding

The main obstacle in low-carbon and low-alloyed structural steel pipeline welding is the bubbling of the metal and also unstable weld formation due to the excess content of oxygen in only half red-hot steel. Surface tension coefficient instability due to the spotty oxygen concentration in the basic metal is the reason of unstable weld formation during orbit welding. For welding bath total deoxidation, it’s rational to use argon arc impulse welding with filling wire.execute The computer-analysis of  factors for high-quality weld formation in argon-arc welding was carried out, and aloud to identify the parameters for stable high-quality weld formation.

Key words: rimming steel, compressed-air plant, nonconsumable electrode, orbital welding, boundary tension, pipeline, welding.

UDC 621.791.753.042.5

N.V. Kobernik, PhD in Engineering Science,

G.G. Chernyshov, Dr.- Ing.,

P.P. Gvozdev, student,

A.A. Linnik, student

Moscow State Technical University n.a. N.E. Bauman

koberniknv@yandex.ru

Influence of current type and polarity on electrode and base metal during the hidden-arc welding

We examined the influence of current type and polarityon the depth of fusion. We also carried out the experiments on the influence of welding current value and its balance on the depth of fusion and electrode metal melting rate during hidden arc welding. It was demonstrated that under the influence of changing the current balance without switching welding conditions, it’s rather possible to control the depth of fusion and the amount of weld metal.

Key words: hidden arc welding, depth of fusion, current type and polarity.

UDC 621.791.753

N.N. Potapov, Dr.- Ing.,

N.S. Kolokolnikov, Ing.,

I.A. Kadigrobov, Ing.

(OAO Science and Production Association Cniitmash),

V.B. Penkov, PhD in Engineering Science

(ZAO «Yuzhntechmontazh»)

oooaccniitmash@mail.ru

About the quantity of gases on the metal zones of the weld with nonsteady behavior during the electrode welding

The reasons of pore formation at the beginning and at the end of the weld during the basic coating electrode welding are shown. It happened due to the insufficient gas coverage of welding bath. We gave the recommendations for decreasing weld metal sponginess

Key words: electrode, welding, gas coverage, pore formation, arc discharge.

UDC 621.791.75.042–492

E.B. Votinova, Ph.D. candidate,

M.P. Shalimov, Dr.- Ing.

Ural Federal University

Shalimov@uchdep.ustu.ru

Development of methods for calculations of welds metal composition during flux cored electrode or covered-electrode welding

In the article we described physical and mathematical welding models, that are based on the full material balance of all the elements in each phase. We analyzed and gave the results of the study.

Key words: hand arc welding, flux-cored welding, transfer element factor, welding simulation

UDC 621.791:669.13

V.S. Lebedev, Ph.D. candidate

Lipetsk State Technical University

svarkavs@rambler.ru

Researches on pulsed argon-arc welding of DCI basic parameters influence on the weld geometric sizes

DCI is widely used nowadays in industry.  The development of existing and evolvement of new methods are of high priority. We got the dependences that possible to use during the weld geometric sizes calculations in terms of basic mode parameters during the argon arc welding.

Key words: impact argon-arc welding, dci, analogy parameters, mode parameters, weld geometry.

UDC 621.373.002

G.V. Konyushkov, Dr.- Ing.,

A.Ya. Zorkin, Dr.- Ing.,

V.G. Konyushkov, PhD in Engineering Science,

D.A. Milyavskii, Ing.

Saratov State Technical University

ems@sstu.ru

Welding of metals with non-metals using electrically exploding streaks in vacuum

We offer a promising technique of dissimilar materials with special mechanical-and-physical characteristics connection under the cool temperature and pressure – electrically exploding streaks welding.  Crystallographic aspects of metal combination of  metal with nonmetallic materials using electrically exploding streaks were analyzed. Percolation process model was developed. .

Key words: electrically exploding streaks, percolation model, metal with non-metal connection, preferential crystal directions.

UDC 621.791.92

V.V. Pankov, PhD in Engineering Science,

V.M. Bukin, PhD in Engineering Science

(Nizhni-Volzhskii Centre «Svarka»)

S.V. Pankov, Ph.D. candidate, L.M. Gurevich, PhD in Engineering Science,

U.P. Tryikov, Dr.- Ing.

(Volgograd State Technical University)

Volga-weld@yandex.ru

Development of mathematical model of self-fluxing alloy coat forming on the basis of Ni-Cr-B-Si during gas powder spattering with burning-off

There was shown the opportunity of using the main pureness theory equation calculating the shape of coating forming by das powder spattering with burning-off. We determined the size of capillary constant (2,9 mm)for the cases of burning off the self-fluxing alloys on the basis of Ni—Cr—B—Si by propane oxygen flame.

Key words: gas-thermal coating, self-fluxing powder, mathematical model, capillary constant, surface profile.

UDC 621.791:621.643

N.P. Alyeshin, member of the Academy of Science,

E. A. Gladkov, Dr.- Ing.,

A.I. Gavrilov, PhD in Engineering Science,

R.A. Perkovskii, PhD in Engineering Science,

T.A. Rahmatullin, Ph.D. candidate

Moscow State Technical University n.a. N.E. Bauman

alexgavrilov@mail.ru

Realization of adoptive pipe-lines circular joints welding technology

In the article we examined the questions of using digital technologies in pipelines circular joints automatic welding. We showed the behavior of base cases adaptive correction welding with making-off joint geometric parameter nominal deviations. The effectiveness of suggested methods in development of adaptation systems and digital complexes is confirmed by circular pipe joint with broker line edge preparation welding.

Key words: circular pipe joint, adaptive welding techniques and procedures, digital control welding system.

UDC 621.791.75(204.1)

B.E. Paton, member of the National Academy of Sciences of Ukraine,

V.A. Lebedev, Dr.- Ing.,

C.Yu. Maksimov, Dr.- Ing., V.G. Pichak, Ing.

(E.O. Paton Electric Welding Institute),

S.I. Poloskov, Dr.- Ing.

(Welding and Control Scientific and Technical Centre at Moscow State Technical University n.a. N.E. Bauman)

оffice@раton.соm.uа

Improvement of the equipment for flux cored electrode underwater machine and automatic welding and cutting

We analyzed new technologies in machine and automatic underwater arc welding, surfacing and cutting. The new generation of semiautomatic machines were presented. They meet the new technological requirements in letting-off electrode systems, arc welding current power supplies and hardware. They are tuned to increase the depth of leading works and integrity, improve the operational conditions of welding equipment.

We paid extra attention on the new type of underwater welding and cutting equipment – machine with software which maintains complex trace welding. It’s shown that the new underwater welding equipment has up-to-date quite simple and well-established software.

Key words:automatic machine, flux cored electrode, semiautomatic machine, motion planning, cutting, welding, handling system, control, electric drive.

UDC 621.373/.374:621.791.7

S.N. Sapolskih, PhD in Engineering Science

Vyat’ StateUniversity

vgu-sopromat@mail.ru

Energy inductive storage in welding engineering

We examined the peculiarities of pulse systems welding with inductive energy storage unit. In this article the pros and cons of these systems in comparison with condenser machine were shown. we paid extra attention on the point that defectiveness of both system might be diminished due to their joint use. Also questions of building the power supplement machines with inductive energy storage unit were examined. In particular, we studied electrical machines with inductive energy storage unit, that might be used for welding, cutting and erosion metal machining, and they also have higher energy datum.

Key words: welding, inductive energy storage unit, condenser machines, simulation.