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	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Abstracts of the published articles (�4 2009)
to russian

Structural steels arc welding metallurgy and welding materials. Pokhodnya I. K. P. 3�15.

A review of the researches, conducted at the E. O. Pa-ton electric welding institute, of the structural steels arc welding metallurgy problems and welding materials devel�opment is given. The article features such aspects as: arc consistency and electrode metal transfer, metal and slag evaporation, welding aerosol formation, metal and gas in�teraction, porosity, modelling of interactions in multicompo-nent systems, chemical inhomogeneity, systems of alloying and forecasting of microstructure of weld metal, cold-short cracking in welded joints from high-tensile low-alloy steel. Achievements of the institute in new welding materials de�velopment are covered and further research areas are out�lined.

Weld metal gassing at welding by the basic-cov�ered electrodes. PotapovN. N., FeklistovS. I., PenkovV. B. P. 16�19.

Gaseous phase effect on the weld metal gassing at fluo�ric-calcic-electrode welding is studied. Three modifications of carbon (soot, wood charcoal, graphite) are investigated. It is established that soot and wood charcoal are the most effec�tive modifications of carbon from the point of minimum oxygen and carbonic acid content in the added metal. Research results are given. The TsU-8 (UY-8) electrodes are designed on basis of the obtained results.

Protective corrosion-resistant covering formation features at pulse electroarc welding of the austenitic steels. Sarayev Yu. N., Bezborodov V. P., Selivanov Yu. V. P. 20�25.

A fused coating formation physical-and-mathematical process model is developed, which takes into consideration correlation of the external and internal forces affecting on the molten metal with its geometry features. The model allows for calculate deposition mode characteristics for different atti�tude. The offered variation algorithm of the deposition mode critical parameters ensures weld metal formation control and favours deposit upgrading.

Steel frames column reinforcement of the industrial buildings encasing. Rodionov I. K. P. 25�29.

Problems of the stress state, developing at steel frames column reinforcement (welding) of the encasing are fea�tured. Theoretical justification of the efficient welding tech�nology of struts reinforcement is described; this technology allows for welding both reinforced and reinforcing kernels at total assumed load. Criteria for welding works safe conduct at column reinforcement by the section enlargement meth�od are given.

Case welding features of the small size ionizing emission sources. Ivanovich Yu. V., Tabakin Ye. M. P. 29�32.

There is a possibility of forming a metal splashing of welding bath as a result of gas expansion inside a small free volume of the case at welding small-size ionizing radiation sources. It is determined that splashing is formed at the stage of weld seam overlapping at the excessive pressure of 430�450 kPa. Investigation of conducting pulse argon-arc welding and dwell-welding to achieve hermetization of the ionizing radiation sources are carried out. It is shown that ap�plication of these techniques allows for considerable reduc�tion of thermal effect on the source case and exclusion of splashing formation probability.

Commercial investigation of power inputs in the welding electrode drying and tempering facilities. Shelepov Ye. P. P. 37�46.

Research results of the power inputs in three tunnel elec�tric, two conveyor furnaces and five conveyor multiple-pass electric furnaces are considered. Using heat-balance equa�tion, general power inputs of the furnaces are divided into separate constituent parts, which allowed for cause analysis of unequal consumption of different furnaces. Furnace rank�ing according to power inputs is carried out. It is established that tunnel furnaces are the most economical. Energy con�sumption dependencies on production rate and tempering temperature are covered. It is shown that the sum of the pow�er inputs useful specific components (moisture evaporation and steam superheating, coating and bar heating) in sin�gle-pass furnaces does not depend on the electrode diame�ters, furnace capacity and construction.

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