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	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Contents (�4 2015)
to russian

SCIENTIFIC-TECHNICAL SECTION

Meyster R. A., Padar V. A., Meyster A. R., Bayandina O. V., Vatslavskiy E. S. � CO2-shielded welding in the straight polarity

When arc feeding from a single phase rectifier with capacitor voltage multiplier and throttle inductance of 1,2 mH, ensured the seams formation is provided with wires of 0,8 and 1,2 mm and current of 12 A and more on straight polarity in carbon dioxide. At current below 50 A the melting coefficient increases and the difference in the melting rate on the straight polarity as compared with the feedback is reduced. Judging by filmograms and oscillograms, transfer with large size drops is not accompanied by displacement drops from the electrode axis and increased spraying.
Key words: welding in carbon dioxide, straight polarity, melting coefficient, drops displacement

Zhemanyuk P. D., Petrik I. A., Ovchinnikov A. V., Seliverstov A. G. � Influence of the welding manner on the welded joints structure and mechanical properties of the heat resistant titanium alloys with different initial structural state

In this work questions about welding of rotor parts made of heatproof titanium alloys are examined. Comparative research of fusion and rotor friction weldings influences on structure and properties of welding joints have been carried out. It is shown, that friction welding occurs in solid phase with tempered structure creation. Welding joints which have been obtained by friction welding have structure of alloying zone close to basic material and almost have no heat-affected zone. It is established that welding with such options, gave us ultimate strength of welded samples not less than parent metal.
Key words: titanium alloys, friction welding, welding joint, microstructure, mechanical properties

Topolyanskiy P. A., Ermakov S. A., Sosnin N.A. � Compressed-arc titanium welding

Conditions of sustainable plasma welding process of titanium and its alloys for rolling mill sheet metal of dissimilar thickness have been studied with the use of similarity theory methods.
Main regularities of choice of the optimal plasma welding parameters for titanium and its alloys have been determined on the basis of titanium properties that have an impact on the welding process.
Key words: welding, titanium welding, plasma welding

Babinets A. A., Ryabtsev I. A. � The fatigue life of multiple-beaded samples

The samples design and methods of fatigue life experimental evaluation of a multiple-bead deposit metal under cyclic mechanical loading. For test three-point bending scheme was chosen with cyclic loading from zero on the sample center, which with certain assumptions reproduces power loads that are typical to mill rolls, rollers for continuous casting machines and other tools, accessories and equipment for metals and alloys hot deformation that in operation are subjected to simultaneous action cyclic thermal and mechanical loads. Through the use of the developed methodology the durability of samples from steel 40X, overlaying welding using a flux-cored wire PP-Hp-25X5FMS with and without plastic sublayer is investigated. For sublayer overlaying welding used solid wire Sv-08A or flux-cored wire PP-Hp-12X1MF. It is established that the plastic sublayer overlaying welding using a wire Sv-08A and PP-Hp-12XlMF increases the fatigue life of overlaying welding samples of 1.3 and 1.6 times, respectively. The wire PP-Hp-12X1MF providing receipt overlaying welding metal with higher mechanical properties compared to wire Sv-08A, provides higher fatigue life of the multilayer overlaying welding specimens.
Key words: arc overlaying welding, multi-layer overlaying welding, plastic sublayer, fatigue tests methodology, fatigue life

Anakhov S. V., Pykln Yu. A., Matushkin A. V. � Research of the plasmatrons gas-vortex stabilization systems

The analysis of several plasmatrons for metal cutting is done. Influence of desing features of an air-gas path on an overall performance or gas rotating systems for stabilization in plasmatrons is investigated. Non-uniformity of plasma gas distribution in cross-section of a path is revealed. The way of stabilization due to change of the expansion chamber sizes is analyzed. Directions of the further designing are formulated.
Key words: plasmotron, designing, flow dynamics, velocity, dynamic pressure, air-gas path, profiling, gas rotating stabilization, swirl canals, expansion chamber, plasma gas, plasma jet, computational modeling

Domanov V. l., Domanov A. V., Mishin A. V., Karpukhin K. E. � Creature of the control system for arc-welding equipment

Considered control system of manual arc welding. The synthesis of a nonlinear model of the electric arc. Considered structures with non-controlled and adjustable welding current source and transfer functions of these schemes. Performed modeling and analysis of structures under the action of random signals. Necessary to optimize the use of reconfigurable (adaptive) regulator. Analyzed extreme regulatory system that is configured to search for the minimum dispersion of the current. Used incremental search mode.
Key words: arc, nonlinear systems, operator, random signal, extreme system, adaptive regulator, dispersion

PRODUCTION SECTION

Royanov V. A., Bobikov V. I. � Facility fbr arc spray with a pulsating mode outflow of the air � pulverizing stream

On the grounds of literature review is established, that the applied electroarc metallizing have a high consumption of compressed air. During sputtering occurs the intensive influence of the pulverizing air jet on the liquid metal of the melted electrode ends, which leads to significant burning of alloying elements. The degree of the oxidation reaction depends on the heat resistance of the pulverized material, particles dispersion, the oxygen affinity of the components, the technological parameters of the coating process.
In order to reduce the oxidative influence is proposed to use a pulsating air-pulverizing jet. To solve this problem it was necessary to develop an appropriate device to a stationary electroarc metallizing EM-17, providing a pulsating mode outflow air-pulverizing jet in the range 9�130 Hz. It is established, that the pulverizing jet has the pulsate shape with a temporal intervals.
Through the use of a circular cross section pulse has gradually increasing form. Through the use of a rectangular flow section made it possible to get more steeply increasing pulse shape.
The obtained research results are evidence of a oxidizing influence reduction of the air-pulverizing jet. It is established, that the optimum frequencies that improve the properties of the coating are 40�80 Hz.
Key words: arc-welding spray coating, pulsed mode, the pulverizing air jet, metallizing nozzle channel, the dynamic jet pressure

Chigarev V. V., Shchetinina V. I., Chthetinin S. V. � Magnetic field at arc welding

It is established, that when welding a longitudinal magnetic field of the two plates welding current transform to one plate field, which supports an electromagnetic nature interatomic bonding forces. When a gap is 0,002 m the longitudinal magnetic field induction of the welding current sharply increases as a result of force limes thrust. Under the induction action the arc rotates, the electromagnetic force and the magnetic pressure, directed forward and to lateral edges of the bath, arise that provides the movement of the liquid metal to the front part of the crater and to the side edges, forming seams without undercutting and confirms electromagnetic nature undercut formation with one-sided high-speed welding.
A method of one-sided high-speed welding by composite electrode on the melt backing with gap of 0,002 m is developed, which provides increase of the process stability, of the electromagnetic forces directed forward and to the side edges of the bath and quality and toughness of welded joints.
Key words: a longitudinal magnetic field, root openingin, the electromagnetic force, undercuts, one-sided high�speed welding, composite electrode

Lyalyakin V. P., Aulov V. F., Ishkov A. V., Krivochurov N. T., Ivanayskiy V. V. � The choice or steel, hardened by inductive hard-facing, according to the structural heterogeneity criterion

The simple�s technique of the steel quality, hardened by a method of induction overlaying welding, by results of original metallurgical survey of samples of a weld ability test is developed. The test has allowed by criteria of structural heterogeneity of a built-up layer of alloys ��-��27, ��-�27, ��-14-60 is proved to recommend steel 50�� for manufacturing the lancet claw of a welded assembly and the subsequent reinforcement induction overlaying welding, and also to develop composition of new steel.
Key words: steel, induction overlaying welding, weld ability, microstructure, structural heterogeneity, wear, soil-cultivating details of agricultural machinery

Kozyrev N. A., Kryukov N. E., Kryukov R. E., Igushev V. F., Kovalskiy I. N. � Technological aspects of the carbon-ftor containing additive utilization for submerged arc welding

Technological aspects of the introduction carbon-fluorine containing additives in fluxes AN-348, AN-60 and AN-67 welding 09G2S are considered. It is shown that the use of supplements reduced the total oxygen content in the weld, reduced pollution oxide non-metallic inclusions and the level of gas saturation of the weld metal, the complex increases the required mechanical properties and toughness of the weld with the concentration of carbon in the weld remains at the base metal.
Key words: automatic arc welding, welding flux, electrode wire, nonmetallic inclusions, mechanical testing

Shkodkin V. I., Chernyadev Yu. L., Romanenko D. N., Chernyadev A. Yu. � Utilization experience of the wire PP-Hp-18X1G1M.01 at wheelsets tyre comb surface welding of the industrial electric locomotive

Efficiency of a choice of a naplavochny wire of NP-18H1G1M.01 for a wearproof naplavka of crests of bandages and increase in a between-repairs cycle is shown.
Key words: electric locomotive, naplavka, wheel couple, wear, vykatka, crest

Romanenko D. N., Shkodkin V. I., Terekhin M. S., Dogdelev A. M. � Tool life increase by electrospark alloying with the application electrode from carbide recycled waste

In work production tests of the cutting tool of the electrospark alloying strengthened by method of different function with use of the electrode material received from the processed waste of a firm alloy by method of electroerosive dispergating are presented.
Key words: resistance, electrospark covering, hardness, the electroerosive dispergating, the cutting tool

ECONOMICS AND PRODUCTION ORGANIZATION

Medvedeva L. N., Yushkov E. S. � Influence accounting and analysis of the finished product valuation methods on the industrial enterprises financial results

Set out the accounting treatment for the finished product to determine the feasibility of using a particular method of accounting for the finished product in the company, taking into account the specifics of its activities.
Key words: finished products, costs, methods of assessment, cost of production, expenditure, financial result, standard cost

BIBLIOGRAPHY

Contents of the foreign journals on welding

RF patents for the inventions in the field of welding

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