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	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Contents (�04 2018)
to russian

SCIENTIFIC-TECHNICAL SECTION

Labur �. �., Ostash �. P., Pashulya �. P., Yavorska �. R., Golovatyuk Yu. V., Uchanin V. M., Koval V. A., Shinkarenko V. S. � Features of the structure formation and mechanical properties of welded joints of an aluminum alloy AMg5M manufactured by using a consumable electrode at different welding speeds and the butt spatial position

The dependence of the structure and mechanical properties of the AMg5M alloy welded joints from the butt spatial position relative to the horizontal plane when welding with a consumable electrode is studied. Welded joints optimal properties of assemblies or structural elements for given alloy in installation conditions can be achieved by placing joints at an angle of 30 degrees relative to the horizontal plane. It is conditioned by the formation of a fine-grained structure of the weld metal and the favorable character of the precipitates distribution, their size, and also the degree of defectiveness.
Key words: argon-arc welding with a consumable electrode, the spatial butt position relative to the horizontal plane, welded joints, structure, strength, plasticity, cyclic notch toughness, study

Shiganov I. N., Melnikov D. M., Zo Ye Myat � Effect of laser impact treatment on the properties of aluminum alloys welded joints

The features of formation of structure of welded joints of heat-treatable and not treatable aluminium alloys in the conditions of laser welding. Shows the structural difference of the weld and the transition zone from the core material and effects on strength of welded joints.
To increase the strength of welded joints is proposed to use laser shock processing. The results of studies on the influence of the understanding of the modes of laser shock processing on microhardness of welded compounds of the aluminum alloy.
Key words: laser, welding, aluminium, impact, structure, properties, modes

Ananev A. I., Borshchev Yu. P., Kurkov �. �., Shibalov �. V. � The microporosity of the AlSi10Mg alloy obtained by selective laser fusion

The growth kinetics of micropores in the selective laser alloying (SLA) AlSi10Mg over a wide range of annealing temperatures and micropores influence on the density and mechanical properties change of the initial alloy are considered. The possibility of a significant controlled increase of the ductility and toughness is noted.
Key words: microporosity, supersaturated solid solution, heat treatment, mechanical properties

Trushnikov D. N. � High-frequency oscillations of the secondary current in the plasma during electron beam processing of materials

The paper describes the results of studies aimed to identifying of the nature of the of plasma high-frequency oscillations detected at the electron beam processing. It is found that the secondary current fluctuations caused by thermionic processes penetration channel, are modulated by self-oscillations in the plasma. The probability of the oscillation increases with increasing magnitude of the secondary current in the plasma. The observed instabilities have ion-acoustic nature, and their frequency depends on the position of the measuring electrode � collector mounted above the welding zone. The existence of these self-oscillating processes must be taken into account when the methods of operational control of electron beam processing are developed.
Key words: plasma at electron-beam treatment, high-frequency plasma oscillations, channel of fusion penetration, auto-oscillations in a plasma

Yulenets Yu. P., Gaykov �. V., Markov �. V., Osipova �. V. � Analytical model for assessing the quality of high-frequency plastics welding

A prognostic model to appraise the quality of high-frequency welding of plastics is suggested.
Presented in formalized view the model corresponds to the solution of optimal through the depth of the material temperature distribution problem due to welding process and reverberates the data-processing relationship between the welding joint quality characteristics of components of various thickness with the regime parameters of welding, i.e. the electric field intensity, the temperature of working condenser, the time of welding.
Key words: high-frequency welding, plastics, thickness of parts, quality evaluation, prognostic model

PRODUCTION SECTION

Volkov S. S., Konovalov �. V., Kurkin �. S. � Development of a technology for removing residual stresses and deformations in the welded joint zone by using the ultrasonic vibrations

The studies in the article indicate the possibility of usage of ultrasonic fluctuation as a method of removing residual tensions and improving the quality of welded joints. The existing methods for eliminating residual tensions were analyzed. The shape and material of the waveguide � a tool with the hammer mechanism of a spherical shape were chosen. It was shown that ultrasonic treatment of the welded joint area reduces the deformation degree more than twice.
Key words: strength, deformation, residual tensions, ultrasonic vibrations, waveguide, welded joints

Krivonosova �. �. � Corrosion failure features of the chromium-nickel stainless steels welding joints

In this article the features of the welded joint corrosion failure of chromium-nickel steels of austenitic and austenitic-ferritic structural class when working in a corrosive environment of highly concentrated NaCl and KCl salts are researched. The assessment data of resistance to corrosion cracking at stress are systemized according to the method of a salt solution drop evaporation. Conclusions are given on the choice of welding materials enabling to the minimum possible corrosion damage of welded seams of the potash production technological equipment.
Key words: stainless chromium-nickel alloys, welded seams, austenitic-ferritic structure, welding wires, corrosion failure

Gurkin S. V., Kobernik N. V., Mikheev R. S., Kremlev S. S., Gontsa A. V. � Features of the antifriction coatings formation on the grounds of babbitt alloys at the plasma deposition

The article is devoted to the plasma-powder deposition process of antifriction coatings based on babbit. The main attention is paid to pore formation in the metal deposit, as well as the adhesion strength of the coating with the steel substrate. Two methods for evaluation the porosity of the metal deposit are considered: "by slice" and "by mass". The advantage of the porosity evaluation method "by slice" is shown, which allows the pores distribution evaluation over the depth of metal deposit and their dimensions. The influence of the pulsed deposition regime and the sublayer presence on the pore formation is studied. The possibility of influence on the porosity of the metal deposit by means of the regimes selection (through the current asymmetry coefficient) (on the size, number and distribution of pores in the metal deposit) is established. In addition, the necessity of using a sublayer, which reduces the porosity and increases the adhesion strength of the coating to the steel substrate, is substantiated.
Key words: plasma-powder deposition, antifriction coating, babbit, porosity of the deposited material, steel base

Shestel L. �., Volkov S. S., Sayapin Yu. A., Sokolov V. A., Kutashov D. A. � Multipoint ultrasonic welding of the frame structures from rigid plastics

Considered the question the development of technology and equipment for multipoint ultrasonic welding of hull structures of rigid plastics.
Key words: multipoint welding, ultrasonic, hull structures, technology, equipment, rigid plastic

STANDARTIZATION, PRODUCTION QUALITY

Petrov P. Yu. � Modern definition of the term "Manufacturability"

The analysis of the utilization practice the concept of "Manufacturability" and improving the terminology associated with this term is given. The definition of manufacturability as a certain integral characteristic of the applied technology and the created control system is proposed.
Key words: the term "Manufacturability", integral characteristic, technology, control system

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