Contents of the Paton Welding Journal
no.2, 2010 |
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Page |
SCIENTIFIC AND TECHNICAL |
Makhnenko V.I. and Romanova I.Yu. Calculation prediction of fatigue life of freight car side frame under alternating cyclic loads |
2 |
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An example of calculation prediction of fatigue crack growth in a side frame of freight cars at a preset range of random cyclic loads is considered. Relationship between exceeding design conditions of operation of the car and probable cause of its fracture was studied. |
Falchenko Yu.V., Muravejnik A.N., Charchenko G.K., Fedorchuk V.E. and Gordan G.N. Pressure welding of micro-dispersed composite material AMg5 + 27 % Al2O3 with application of rapidly solidified interlayer of eutectic alloy Al + 33 % Cu |
7 |
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Solid-phase weldability of micro-dispersed composite material AMg5 + 27 % Al2O3 by using rapidly solidified interlayer of eutectic alloy Al + 33 % Cu was studied. It was established that application of the rapidly solidified strip as an interlayer activates the mating surfaces and allows decreasing the temperature and time of diffusion welding of AMg5+ 27 % Al2O3 material. Employment of the techniques that accelerate diffusion processes in a butt joint (forced deformation, thermal cycling) made it possible to reduce the interlayer thickness to its almost complete dissolution and improve shear strength of the welded joint to the base metal strength level. |
Tsybulkin G.A. Evaluation of quality of the arc self-adjustment process |
11 |
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Steady-state modes in the welding circuit during gas metal arc welding are considered. An approach is offered to evaluate quality of the arc self-adjustment process based on the use of the error index method. |
Chernaya T.I., Tsaryuk A.K., Siora A.V., Shelyagin V.D. and Khaskin V.Yu. Laser welding of root welds of thick joints of heat-resistant steel |
14 |
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Technology of laser welding of root welds from heat-resistant steel is described. Optimum conditions for sound formation of root welds with complete penetration and smooth transition from the back bead to the base metal were determined. |
Dolinenko V.V., Skuba T.G., Kolyada V.A. and Shapovalov E.V. Optimal control of formation of weld reinforcement |
17 |
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Method is proposed for development of the optimal system for automatic control of formation of the weld reinforcement with transportation lag in the feedback loop under MAG welding conditions. A dynamic model of formation of the weld reinforcement was developed to build the optimal controller. Mathematical modelling was performed by using the MATLAB software package. The developed control system provides a minimal duration of the process at preset limitations of dynamics of the adjustment actions. |
INDUSTRIAL |
Kuchuk-Yatsenko S.I., Nejlo Yu.S., Gavrish V.S. and GushchinR.V. Prospects of increasing energy characteristics of flash butt welding (Review) |
23 |
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Developments aimed at increasing energy characteristics of flash butt welding are reviewed, and possible investigation trends in this area are analysed. |
Rudenko P.M. and Gavrish V.S. Portable system of monitoring and control of resistance spot welding process |
27 |
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The paper presents the schematic diagram and operative algorithm of system of quality control of welded joints made by resistance spot welding, based on a pocket PC. In addition to real-time quality control, the system also implements functions of expert system for technology selection and production analysis. |
Zhudra A.P., Krivchikov S.Yu. and Petrov V.V. Technology for wide-layer hard-facing of crankshafts |
32 |
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Results of experimental investigations of the effect of wide-layer hard-facing parameters on characteristics of the deposited layer are presented. Optimal ranges of variations of the process parameters in hard-facing of cylindrical parts 180--300mm in diameter were determined. Application of the investigation results to development of the technology for repair of large-size diesel generator crankshafts is shown. |
Royanov V.A. and Korostashevsky P.V. Determination of additional resistances to sheet panel displacement over dead roller table of assembly and welding lines |
36 |
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The nature of force interaction of the front edge of sheet panels in displacement along the dead roller table of assembly and welding lines was investigated. The value of additional resistance to displacement of panels for a case of arrangement of rollers with a critical pitch, as well as relationship between its components, was determined. Load cyclograms, allowing for additional resistance to displacement, to be used in calculation of power of the transportation device drives, and recommendations for decrease of the additional resistance were developed. |
BRIEF INFORMATION |
News |
41 |
NEWS |
XIII Republican Scientific-Technical Conference of Kazakhstan Welders |
42 |
Problems of Life and Safe Operation of Structures, Constructions and machines (Final scientific conference at the E.O. Paton Electric Welding Institute of the NAS of Ukraine) |
43 |
INFORMATION |
Loyalty Program of Fronius Ukraina Ltd. in Crisis Period and its Results |
47 |
Developed at PWI |
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