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	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Contents (�7 2011)
to russian

SCIENTIFIC-TECHNICAL SECTION

Razmyshlyayev A. D., Mironova M. V. � Parent material penetration efficiency at flux wire arc surfacing

With regard to flux wire surfacing it is shown that experimental values of the coefficient of thermal efficiency of the parent material penetration at small values of current and surfacing rate are approximately twice less than theoretical ones. Application of correction to the known Rykalin method allows by calculation showing error not higher than 10 per cent to determine area of the parent material penetration zone at flux arc surfacing: facing current range is 400�1000 A and facing rate is 5�40 mph.
Key words: arc surfacing, coefficient of thermal efficiency of the parent material penetration, thermal diffusivity

Krampit A. G. � Welding with double modulation of the conditions basic quantities

The paper considers researches on welding process based on double impulse in order to improve weld creation while narrow welding: welding wire feed speed and impulse welding.
Key words: double impulse, impulse welding, weld, geometrical demension, metal structure

Fedorenko G. A., Andreyev G. M. � On the mechanism of gas-shielded zone formation

Research results of the physical bases of gas shield formation at gas-shielded arc welding are covered. The data provide creation of scientifically grounded calculation methods of equipment design parameters to weld in shielding gas.
Key words: arc welding, shielding gas, parameters, shield efficiency

Frolov V. A., Fiodorov S. A., Bazhanov A. V. � Light-beam welding: Review

Results of research of features of welding are resulted by a light beam of arc xenon lamps. The listed products, successfully welded by a light beam are defined.
Key words: light beam, arc xenon lamp, technological features, constructional materials

Sarayev Yu. N., Bezborodov V. P., Shtertser A. A., Ulyanitsky V. Yu., Orishich A. M., Ulyuschenko A. F., Skakov M. K. � Coating modification by refractory compounds aimed at product operational reliability growth

The article covers solution of the fundamental problem of improving material strength properties and running ability of the products subject to heavy wear. Strengthening is achieved by directed modifying influence of the dispersed refractory compounds on the surfacing process, structure, physical-mechanical and service properties of the coats from metals and alloys. Analysis results of the modifying influence of the introduced into melt dispersed refractory compounds additions obtained by different methods on coating crystallization, structure and physical-mechanical properties are given.
Key words: coating, technology, surfacing, method, strengthening, wear, corrosion, properties, structure

Tsumarev Yu. A. � Bearing capacity of the butt-type composite soldered joints

On-load operation features of the butt-type composite soldered joints are considered. It is shown that in order to increase their bearing capacity the number of steps in the junction should be scale up. It is established that soldered seam thicknesses at the butt and lap parts of the joints are important design parameters, on which working capacity of the step joining depends. The greater is the number of steps the less is soldered seam inherent strength effect on the bearing capacity limit of the butt joint.
Key words: soldered joints, bearing capacity, seam thickness, working capacity

PRODUCTION SECTION

Fainberg L. I. � Thermal cycle reproduction of the large-diameter pipe welding

Some methodological reasons leading to seam thermal cycles� differences are studied. Welding is carried out on gas pipes of large diameter and on laboratory patterns of limited width.
Key words: submerged multiarc welding, large-diameter pipe, sas pive. thermal cvcle, impact toughness

Lebedev V. A., Tischenko V. A. � Punching tools rework engineering resources by machine arc surfacing

Problems of technology selection and equipment creation at reconditioning and repair surfacing of the punching tools mold in order to raise tool resistance characteristic minimize power and resource inputs are considered. Off-the-shelf design usage of the ��107�-t�� deposition semiautomatic devices and of programmable mobility of a semiautomatic machine support using NC-controlled machine units are grounded and offered. A method of self-clinching flux cored electrode wire with modulation characteristic regulation is applied.
Key words: stamping tool, matrix, surfacing, process, conditions, modulation, arc, semiautomatic device, electrode wire, characteristics

Korotkov V. A., Mikhailov I. D. � Repair welding practice of mining and smelting equipment

An experience of applying repair welding, welding-up technique and semiautomatic devices when upgrading constructions of the mining and smelting equipment is considered.
Key words: repair welding, crack, semiautomatic device, welding materials

Bochkariov N. A., Belyavsky M. V., Kharkovsky V. A., Saguirov Kh. N., Dyurguerov N. G. � Mechanization of the freight stock box bodies maintenance

Technology and equipment for mechanized repairs of freight stock box bodies by method of additional parts using plug lap joints for consumable electrode submerged strip welding to wear-out box webbing are suggested.
Key words: freight stock, box, arc surfacing, electrode

Frolov V. A. � Processing characteristics analysis of the thyristor power sources

Welding and processing characteristics analysis results of the welders are described. Estimation procedure of me control circuit operation is given; drawbacks of control circuit construction are brought out. Methods of welding and processing characteristics improvement are suggested.
Key words: thyristor power sources, control circuit, oscillogram, volt-ampere characteristic

ECONOMICS AND PRODUCTION ORGANIZATION

Soloviova I. P., Asayeva T. A., Ignatyev A. I. � Organizational principles of an industrial plant costs optimization

One of the principal conditions of successful activity of an enterprise is production cost optimization. The present-day methods of economic management make the enterprises change production cost management. The problem is directly contacted with the condition, search for renewal source and efficient use of production resources as a considerable part of circulating capital. One of the solutions of the problem may become a logistic method application for determining inventory optimum quantity and cut in manufacturing cost as a consequence.
Key words: cost optimization, inventory, stock of materials/resource, inventory optimization, efficiency, manufacturing cost, logistic methods, the Pareto principle

EDUCATION & PERSONNEL TRAINING

Strunina V. V. � Professional competence and competitiveness of a specialist to be

Requirements are considered, which a present-day specialist, a graduating student is to meet.
Key words: specialist, education, mobility, competitiveness

BIBLIOGRAPHY

Contents of the foreign journals on welding

RF patents for the inventions in the field of welding

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