e9

	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Contents (�9 2011)
to russian

SCIENTIFIC-TECHNICAL SECTION

Donchenko Ye. A. � Calculation of a dot thermal cycle at machine welding and surfacing taking into consideration melting features of the parent metal

It has been proved that it is possible to adjust the well � known N. N. Rikalin equations which are used to calculate the temperatures as well as the basic thermal cycle parameters of spots in machine welding and facing subject to factors related to the fusion of the basic metal.
Key words: thermal cycle parameters, peak temperature, fusion, heat, overheat, coefficient of thermal efficiency, fusion area, heat-affected area, instantaneous rate of cooling

Volkov S. S. � Ultrasonic butt-seam welding of rigid plastic

Butt-welded joints� design at rigid plastic ultrasonic welding with auxiliary pressing force is considered. Two methods of ultrasonic vibrationa energy input in immediate proximity to the weld zone using tangential input of vibrations and relative displacement of welded componentry in the interface surface; and welding with double-sided tangential input of vibrations are offered.
Key words: ultrasonic welding, plastics, ultrasonic vibrations, butt-welded joint

Khorev A. I. � Scientific foundations for achieving high and super high structural strength of the welded titanium alloys

Theoretical and practical bases of obtaining welded titanium alloys of high and super high strength by applying promising techniques of improving structural strength, such as multicomponent alloying, modification, strengthening heat treatment, cold deformation, thermomechanical treatment, cladding, thickening in the seam zone while machining are developed. Zirconium and rhenium modifying agents� effects on the structure and mechanical properties of the welded joints of BT14, BT15 and BT16 alloys are investigated.
Key words: titanium alloys, strength, welded joints, structure, properties

Anakhov S. V. � Influence of the intense gas mixture on the efficiency of plasma surface hardening

The opportunity of metal surface modification by moving by nitrogen-containing direct plasma arch is considered. The analysis of design and experimental data testifies to effect of nitrogen "freezing" after implantation in a superficial layer (up to 100 microns) due to reduction of surface desorption speed and diffusion in metal. At the same time, nitrogen has time to be dissolved up to the concentration necessary for formation of nitrides of iron of various phase structure, and to receive metal with the raised wear resistance of a superficial layer. In case of the additive in mix carbon-containing gases it is possible to raise hardness and a limit of endurance of the metal surface.
Key words: plasmotron, surface modification, nitriding, diffusion, desorption, implantation, plasma composition

PRODUCTION SECTION

Semionov V. D. � An installation for multiarc machine welding of steel-plate constructions with webbing set

A design and performance description of an installation for multiarc machine welding of a webbing cross-set by wire electrodes in shielding gas are covered. Use of the installation allows for raising labour productivity considerably.
Key words: multiarc machine welding, webbing, installation, labour productivity

Bardin A. I., Nikitin S. V., Romanov A. V., Janikyan A. V., Birykov A. P. � Single-phase welding inverter Forsage-200M

Performance specification, primary functions and conditions of a new welding inverter Forsage-200M using single-phase mains system or 220 V autonomous mobile power supply are given.
Key words: arc welding, welders, "Forsage", performance specification

Sivtsev M. N. � Mining hardware repair welding under conditions of low climatic temperatures

The results of repair welding of large-sized units of mining machinery at the cold climatic temperatures. Calculations and experimentally shown, with specific examples, the selection of the welding materials and preheating temperature.
Key words: welding, low-alloy steels, preheating, repair welding

ECONOMICS AND PRODUCTION ORGANIZATION

Rosinov A. Ya., Shatilov V. A., Logunov V. V. � Change of succession of assembly and welding of erection joints for the purpose of reduction of unproductive manhours

Means of reducing non-productive costs at assembling junctions of vessel bodies� thin-sheet constructions are considered.
Key words: assembly technique, thin-sheet constructions of vessel bodies, erection joints

EDUCATION & PERSONNEL TRAINING

Tibabisheva L. A., Beklemishev N. N., Tibabishev A. Yu., Murashko V. A. � Formation of personnel exploratory competency on the base of Internet-technology

Large-scale use of information technology resources in the personnel training system coordinated with the plan for expansion of the MATI scientific-and-educational centres allowed for developing a series of on-line laboratory practical training sessions, based on the results of testing efforts carried out in the scientific-and-educational centres on the modern control equipment. Laboratory practical work is founded on the methodological and soft ware integrated by internet-technology. A virtual experimental lab for a wide community of learners, including schoolchildren, students, post-graduates, specialists, is created, which provides research competence formation of the stuff at science intensive manufacturing department.
Key words: specialist, Internet-technology, virtual experimental laboratory, personnel

INFORMATION

Suslov An. A. � The 8th International specialized exhibition and conference "Coatings and Surface Treatment�2011"

BIBLIOGRAPHY

Contents of the foreign journals on welding

RF patents for the inventions in the field of welding

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N. P. Aleshin is 70 years old

S. S. Volkov is 80 years old

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