| SCIENTIFIC AND TECHNICAL | |
|
KRIVTSUN I.V.
MODEL OF EVAPORATION OF METAL IN ARC, LASER AND LASER-ARC WELDING | 2 |
| The model of multicomponent plasma formed near the metal surface in gas-shielded arc, laser and laser-arc welding is suggested. The model is based on the system of balance relationships for flows of heavy particles, their momentum and energy in the Knudsen layer near the surface of metal evaporating into the plasma of external gas. Expressions derived for density of electron and ion currents flowing to the metal surface and for distribution of potential in the multicomponent near-surface plasma (arc, laser or combined) are given. | |
|
EROSHENKO L.E., PRILUTSKY V.P., BELOUS V.Yu. and ZAMKOV V.N.
AXIAL DISTRIBUTION OF TEMPERATURE IN ARC IN GTA WELDING OF TITANIUM | 10 |
| The spectral method was used to investigate the real GTA welding arc burning between a non-consumable tungsten electrode and a consumable titanium and non-consumable copper water-cooled anodes. Experimental data were obtained on distribution of temperature in the arc column along the arc radius near the anode. It is shown that axial distribution of temperature in the arc column depends upon the state of the anode. In a region adjoining the anode the arc temperature is higher in the vicinity of the consumable anode. | |
|
LOZOVSKAYA A.V., CHAJKA A.A., BONDAREV A.A., POKLYATSKY A.G. and BONDAREV Andr.A.
SOFTENING OF HIGH-STRENGTH ALUMINIUM ALLOYS IN DIFFERENT FUSION WELDING PROCESSES | 13 |
|
Base metal softening in the HAZ in EBW and argon-arc welding
(AAW) of work- and heat-hardened aluminium alloys (AMg6, 1420,
1201, 1460) was studied. It is found that in EBW the extent of
the softening zone is 4-5 times smaller than in AAW. After
artificial ageing the greatest hardness of the HAZ metal is
observed in alloy 1420 and the lowest | |
|
SHONIN V.A. and POKLYATSKY A.G.
LOW-CYCLE FATIGUE OF WELDED BUTT JOINTS MADE FROM ALLOY AMg6 IN INERT ATMOSPHERE | 18 |
| Results of experimental investigations of a low-cycle fatigue resistance of butt joints made from 6 mm thick AMg6 alloy at axial from-zero loading depending on the geometry of weld convexity, stipulated by the TIG and MIG welding methods, are presented. The feasibility of evaluation of fatigue limit of butt joints by parameter of the convexity height-weld width ratio which has a good correlation with an estimated stress concentration factor at the weld boundaries is proved. | |
|
LEVCHENKO O.G.
CHEMICAL COMPOSITION OF AEROSOL GASEOUS CONSTITUENT IN A SHIELDED-GAS WELDING | 23 |
| It was established that a carbon monoxide and nitrogen oxides are the main components of a gaseous constituent of the welding aerosol in mechanized solid wire welding in CO2, in Ar + CO2 and Ar + CO2 + O2 mixtures. The reduction in oxidizing ability of the shielding gas leads to the decrease in intensity of evolution of carbon monoxide and increase in nitrogen oxides. Introducing of oxygen to the shielding mixture composition reduces the evolution of the carbon monoxide at the expense of its oxidizing and increases the intensity of formation of the nitrogen oxides. The mechanisms of formation of gaseous components of the welding aerosol and relations between the intensity of their evolution and welding conditions are explained. | |
| INDUSTRIAL | |
|
GORBACH V.D. and GOLOVCHENKO V.S.
STAGES OF IMPROVEMENT OF SUBMERGED-ARC WELDING TECHNOLOGY IN SHIPBUILDING (REVIEW) | 27 |
| The paper presents the results of development and introduction of the technology of SAW of steels and structures used for ship hulls, that enabled construction of modern ships with a high quality and effectiveness. | |
|
KOZUBENKO I.D., KHASKIN V.Yu. and CHERNIENKO V.D.
TECHNOLOGY OF LASER SURFACING AND TREATMENT OF COMPONENTS OF ROLLING STOCK WHEELSETS | 33 |
| The importance of solving the problems of strengthening of roll surfaces of wheels is shown. Drawbacks of traditional repair technologies intended for reconditioning of necks of axles of railway car wheelsets are considered. The use of laser surfacing and heat treatment is suggested. Example of experimental-commercial implementation of recommended laser technologies in the Irkutsk-"Sorting" car depot (ESRR, Russia) is described. | |
|
POKLYATSKY A.G.
PECULIARITIES OF FORMATION OF MACROINCLUSIONS OF OXIDE FILM IN WELD METAL OF ALUMINIUM ALLOYS (REVIEW) | 36 |
| The effect of quality of manufacture and preparation of materials to be welded and a filler wire and also conditions of assembly and welding of joints on the appearance of macroinclusions of an oxide film in the weld metal during welding advanced aluminium alloys is considered. The regularities of formation and location of defects in weld section depending on the causes of their initiation are described. The conditions which contribute to the oxidizing processes and reduce the effectiveness of the cathode destroying of the oxide film in the zone of welding are analyzed. Peculiarities of formation of thread-like longitudinal inclusions of oxide film in the weld central part during welding Li-containing alloys are defined. | |
|
MEDVEDEV S.V. and KUNKEVICH D.P.
EXPERIENCE OF EFFECTIVE COMPUTERIZED DESIGN OF ASSEMBLY-WELDING JIGS | 39 |
| Structure and functional capabilities of INSVAR system of CAD of assembly-welding jigs are considered. Examples are given of jigs designed by computerized methods for fitting agricultural machinery with welded structures. Multivariant design allowed the quality of engineering solutions of the jigs to be improved, and the labour consumption in their construction to be reduced almost two times. | |
|
ZARUBA I.I., ANDREEV V.V. and DYMENKO V.V.
IMPROVEMENT OF TRANSFORMERS FOR MANUAL ARC WELDING | 43 |
| The advantages of thyristor control of welding transformers are considered. It is demonstrated that pulse stabilization of arcing in a thyristor-controlled transformer greatly expands its welding-technological capabilities and applications. A transformer of this type developed in PWI provides a smooth adjustment of the operational mode, "hot" and "cold" start, welding current modulation with an adjustable frequency. It can be used in AC and DC electrode welding. | |
| BRIEF INFORMATION | |
|
PETUSHKOV V.G. and TITOV V.A.
RESIDUAL STRESSES IN EXPLOSION TREATED WELDED JOINTS | 47 |
| General principles of formation of residual stresses and strains in welded joints as a result of their local explosion treatment are considered in terms of the elasto-plastic theory. Recommendations on optimization of explosion loading parameters are given. It is shown that results of the treatment do not depend upon the presence and value of initial residual stresses in weld metal. | |
|
EFIMENKO N.G. and KALIN N.A.
EFFECT OF Fe-C ALLOY IN COATING OF ILMENITE ELECTRODES ON REDUCTION PROCESSES DURING WELDING | 51 |
| Calculation formulae are suggested and the amount of silicon, titanium and aluminium being reduced from a slag in deoxidizing of ilmenite type electrodes with Fe-C alloy is defined. It is shown that TiO2 can serve an additional oxidizer of carbon in parallel with Fe-O. The use of alloy Fe-C in ilmenite type electrodes does not lead to a significant increase in content of silicon and aluminium in the deposited metal. | |
(You are viewing the simplified file contents)
The cost of subscription/purchase order journals or individual articles
| Journal/Currency | Annual Set | 1 issue printed |
1 issue |
one article |
| AS/UAH | 1800 UAH | 300 UAH | 300 UAH | 150 UAH |
| AS/USD | 192 $ | 32 $ | 26 $ | 16 $ |
| AS/EUR | 180 € | 30 € | 25 € | 15 € |
| TPWJ/UAH | 7200 UAH | 600 UAH | 600 UAH | 280 UAH |
| TPWJ/USD | 384 $ | 32 $ | 26 $ | 16 $ |
| TPWJ/EUR | 360 € | 30 € | 25 € | 15 € |
| SEM/UAH | 1200 UAH | 300 UAH | 300 UAH | 150 UAH |
| SEM/USD | 128 $ | 32 $ | 26 $ | 16 $ |
| SEM/EUR | 120 € | 30 € | 25 € | 15 € |
| TDNK/UAH | 1200 UAH | 300 UAH | 300 UAH | 150 UAH |
| TDNK/USD | 128 $ | 32 $ | 26 $ | 16 $ |
| TDNK/EUR | 120 € | 30 € | 25 € | 15 € |
AS = «Automatic Welding» - 6 issues per year;
TPWJ = «PATON WELDING JOURNAL» - 12 issues per year;
SEM = «Electrometallurgy Today» - 4 issues per year;
TDNK = «Technical Diagnostics and Non-Destructive Testing» - 4 issues per year.