Contents of the Paton Welding Journal no 10, 2008 (in English)

Contents of the Paton Welding Journal no.10, 2008
Subscription:	Page
50 years of electron beam welding at the E.O. Paton Electric Welding Institute	2
SCIENTIFIC AND TECHNICAL
Kuchuk-Yatsenko S.I., Kirian V.I., Kazymov B.I., Mirzov I.V. and Khomenko V.I. Peculiarities of impact toughness tests of automatic flash butt welded joints on pipes	5
The effect of mechanical heterogeneity of flash butt welded joints on values of impact toughness KCV, as well as of natural stress raisers in the form of the welding zone defects, resulting from violation of the welding technology, on fracture energy has been studied. It is shown that inadmissible welding defects act as softer stress raisers than a standard sharp notch. Also, it is shown that the KCV values of sound joints in the as-welded state reflect the level of their service properties and high operational reliability.
Knysh V.V., Solovej S.A. and Kuzmenko A.Z. Accumulation of fatigue damage in tee welded joints of 09G2S steel in the initial condition and after strengthening by high-frequency mechanical peening	10
Criteria of fracture of welded T-joints on 09G2S steel in as-welded condition and after strengthening by the technology of high-frequency mechanical peening (HFMP) loaded in the decreasing, increasing and quasi-random loading modes, are considered in the context of the hypothesis of linear summation of fatigue damage. It is noted that the linear hypothesis of fatigue damage accumulation is well suitable for prediction of fatigue life of welded joints strengthened by the HFMP technology. For the as-welded joints, where accumulation of damage strongly depends upon the load history, the rule of summation of damage is suggested that decreases the scatter of total damage.
Krivtsun I.V., Sukhorukov S.B., Sidorets V.N. and KovalevO.B. Modelling of the processes of evaporation of metal and gas dynamics of metal vapour inside a keyhole in laser welding	16
Self-consistent mathematical models are suggested to describe processes of metal evaporation, surface condensation and gas dynamics of metal vapour inside a keyhole formed in molten metal in deep-penetration laser welding. Numerical analysis of thermal and gas-dynamic characteristics of the flow of vapour inside the keyhole in laser welding of steel has been conducted. The effect of the gas-dynamic processes on the state of vapour in the keyhole, its pressure on the keyhole wall and heat exchange in the molten pool induced by the processes of evaporation and condensation on its free surface has been studied.
Poklyatsky A.G., Ishchenko A.Ya. and Podielnikov S.V. Influence of friction stir welding process parameters on weld formation in welded joints of aluminium alloys 1.8-2.5mm thick	22
Geometrical dimensions of working surfaces of tools, requirements to edge preparation of butt joints on aluminium alloys, and desired accuracy of their assembly and fixation, have been experimentally determined. The ranges of variation of process parameters, providing defect-free welded joints, have been established.
Makhnenko V.I., Shekera V.M. and Onoprienko E.M. Determination of parameters of simplified static corrosion crack resistance diagram for pipe steels in soil corrosion	26
Procedure for determination of parameters of a simplified static corrosion crack resistance diagram for pipe steels in soil water solution environment is described. The possibility of plotting simplified diagrams using small-sized Charpy-type specimens with a pre-induced fatigue crack is shown. The use of acoustic emission for fixation of crack growth steps allows the test time to be reduced to 5-7 days.
INDUSTRIAL
Nazarenko O.K. Up-to-date equipment of the E.O. Paton Electric Welding Institute for electron beam welding	31
The paper presents the main results of the E.O. Paton Electric Welding Institute activities on development of electron beam welding equipment over the last 15 years. Technical data of the developed range of power units (gun-power source-control system), as well as of some of the electron beam welding machines, are given.
Golovko V.V., Galinich V.I., Goncharov I.A., Osipov N.Ya., Netyaga V.I. and Olejnik N.N. Agglomerated fluxes - new products of OJSC «Zaporozhstekloflyus»	36
Advantages and disadvantages of application of fused and agglomerated fluxes for arc welding are considered. The features of the new synergetic technology of manufacturing agglomerated fluxes in the city of Zaporozhie are noted.
Ma P. and Bondaruk A.V. Experience and prospects of using equipment for welding of rails in Peoples Republic of China	39
Some indices of macroeconomics of China are presented. Plans of development of the country transport system are shown. Main welding technologies used for construction of a railway bed are described. Resistance welding equipment and its main technical-economic characteristics are given. The focus is on innovation technologies for construction of high-speed railroads. Potential demand for new equipment is estimated on basis of rough calculations. Main lines of the technological potential development in the field of equipment for welding of rails are determined.
Karasyov M.V., Rabotinsky D.N., Alimov A.N., GrebenchukV.G., Golovin S.V. and Rosert R. Welding of butt joints of bridge structures and pipelines using flux-cored wire and equipment for metal transfer control	42
Results of development of the technology for butt welding of pipelines under field conditions are presented. Advantages of new types of flux-cored wires with the rutile type core, used with the VD-506DK rectifier, are shown. Recommendations for selection of shielding gas mixtures and welding conditions are given.
Chajka V.G., Volokhatyuk B.I. and Chajka D.V. Series of «Chajka» machines for resistance butt welding of band saws, wires and rods	46
Peculiarities of existing technologies of resistance and flash butt welding of band saws, rods and wires are considered. Existing producers of the machines and drawbacks, peculiar of their application, are noted. Advantages of a new series of the «Chajka» machines are described.
BRIEF INFORMATION
News	49
NEWS
Actual problems of welding consumable production (according to results of broadened meeting of «Electrode» Association of CIS countries)	50
61st Annual Assembly of International Institute of Welding	54
Developed at PWI	30 35 53

Subscription:

Contents of the Paton Welding Journal no.10, 2008

50 years of electron beam welding at the E.O. Paton Electric Welding Institute

2

Kuchuk-Yatsenko S.I., Kirian V.I., Kazymov B.I., Mirzov I.V. and Khomenko V.I. Peculiarities of impact toughness tests of automatic flash butt welded joints on pipes

5

Knysh V.V., Solovej S.A. and Kuzmenko A.Z. Accumulation of fatigue damage in tee welded joints of 09G2S steel in the initial condition and after strengthening by high-frequency mechanical peening

10

Krivtsun I.V., Sukhorukov S.B., Sidorets V.N. and KovalevO.B. Modelling of the processes of evaporation of metal and gas dynamics of metal vapour inside a keyhole in laser welding

16

Poklyatsky A.G., Ishchenko A.Ya. and Podielnikov S.V. Influence of friction stir welding process parameters on weld formation in welded joints of aluminium alloys 1.8-2.5mm thick

22

Makhnenko V.I., Shekera V.M. and Onoprienko E.M. Determination of parameters of simplified static corrosion crack resistance diagram for pipe steels in soil corrosion

26

Nazarenko O.K. Up-to-date equipment of the E.O. Paton Electric Welding Institute for electron beam welding

31

Golovko V.V., Galinich V.I., Goncharov I.A., Osipov N.Ya., Netyaga V.I. and Olejnik N.N. Agglomerated fluxes - new products of OJSC «Zaporozhstekloflyus»

36

Ma P. and Bondaruk A.V. Experience and prospects of using equipment for welding of rails in Peoples Republic of China

39

Karasyov M.V., Rabotinsky D.N., Alimov A.N., GrebenchukV.G., Golovin S.V. and Rosert R. Welding of butt joints of bridge structures and pipelines using flux-cored wire and equipment for metal transfer control

42

Chajka V.G., Volokhatyuk B.I. and Chajka D.V. Series of «Chajka» machines for resistance butt welding of band saws, wires and rods

46

News

49

Actual problems of welding consumable production (according to results of broadened meeting of «Electrode» Association of CIS countries)

50

61st Annual Assembly of International Institute of Welding

54

Developed at PWI

303553

30
35
53