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	Journal "Svarochnoe Proizvodstvo"	ISSN 0491-6441
	Contents (�01 2020)
to russian

SCIENTIFIC-TECHNICAL SECTION

Krivonosova �. �., Trushnikov D. N., Shchitsyn Yu. D., Kartashev M. F. � Structuring and properties of aluminum alloys in the processes of products layer-by-layer synthesis

This paper presents the results of comparative studies of the structure and properties of aluminum alloys obtained by complex technologies: plasma surfacing on reverse polarity and pulsed deposition with cold feed material (CMT Advanced) with layer-by-layer deformation hardening and without it.
Key words: additive processes, layer-by-layer deformation hardening, aluminum alloys, porosity, mechanical properties

Yangirov I. F., Ismagilov F. R., Maksudov D. V. � Electromechanical double-spiral magnetocumulative generator microwave radiation at welding

The article proposes an original design of an electromechanical double-spiral magnetocumulative generator microwave radiation. Its mathematical model is created and the calculated relationships for practical use are derived. In the course of the work, the theory statutes of electric circuits and magnetic fields, elements of mathematical analysis and the theory of electrical oscillatory processes (beating, resonance, etc.) in complex contours are used. As a result, a relation was obtained that determines the maximum value of the beating frequency between two electric circuits connected by a weak capacitive coupling and makes it possible to carry out the calculations necessary to create a magnetocumulative generator with high microwave radiation to regulate it. Thus, the mathematical model of the magnetocumulative generator presented in the article is based on a fundamentally new combined application of the electrodynamics laws and the theory of electrical oscillatory processes. Based on this model, proposals for using the proposed design with an original circuit design are developed.
The results of the work can find application in mechanical engineering, in particular in the welding industry for spot welding due to the high concentration of energy in a narrow beam and with a high frequency (in medicine, military equipment, radio physics, etc.).
Key words: liner, double helix solenoid, beating, capacitive coupling, oscillatory process

Mukhametrakhimov M. Kh. � Mechanical properties of a solid-phase composition from VT6 titanium alloy obtained under conditions of lowtemperature superplasticity

The problem of obtaining high-quality solid-phase compound (SPhC) of bulk nanostructured titanium alloy VT6 at temperatures of 800...600 �C under conditions of low-temperature superplasticity is researched in the paper. The factors that determine the quality of the SPhC are considered: the structure of the material, the welding conditions (temperature, degree of deformation), geometric shape of the joined blanks. It is experimentally proven that at pressure welding in the temperature range of 800...700 �C with a degree of deformation within 5 %, it is possible to obtain high-quality SPhC. With an increase of the deformation degree up to 15 %, the influence of the temperature-time factor increases and the strength characteristics of the welded specimens decrease. The possibility of superplastic flow localization in the joint zone by changing the geometric shape of the blanks is shown. Complex design and physical experiments on the feasibility of pressure welding of blanks from VT6 alloy at temperatures of 650 and 600 �C using the phenomenon of low-temperature SP are performed.
Key words: pressure welding, low-temperature plasticity, material structure, deformation degree

PRODUCTION SECTION

Dubrovskiy V. A., Amelicheva A. Yu., Potapov A. V. � Prediction of the dimensions residual radial movement in "sleeve"-type parts after electrocontact welding by means of welding wire

A comparison of the quantitative values of residual radial displacements of dimensions after EWW with �v-08G2� wire with 1.2�2 mm in diameter and mechanized arc deposition in carbon dioxide with the same material with a diameter of 1.2 mm is considered.
The influence of various factors on the change in the quantitative values of such movements after EWW is considered. It is proposed to appoint one of the five described methods for repairing of the "bushing" type details based on the prediction of the quantitative values of dimensions residual radial displacements prior to the implementation of the such details recovery technology through the use of EWW. Mathematical dependencies based on experimental studies is proposed for prediction the quantitative values of the residual radial displacements of the "bushing" type details dimensions, restored with EWW in 1�3 layers.
Key words: thermal radial displacements, welding wire, mechanized arc deposition, carbon dioxide, repair of details, experimental researches

Zhukov M. B. � Manufacturing of ribbed structures by layer-by-layer deposition of rollers on a sheet

The problems of the ribbed monolithic panels and beams manufacture by the method of layer-by-layer roller deposition on a flat sheet with the formation of ribs are considered. For stringer type panels, deposition in combination with the warm rolling of the roll metal results in a compaction of the roll metal, there is also a decrease in residual stresses and strains.
High rigidity and strength of the wafer panel is provided by technology, as a result of which the panel crossbar and the places where the ribs and the sheet are joined together present a single unit, i.e. they are monolithic.
T-beams are attributed also to ribbed structures. Increasing the stability of the T-beam wall shape is obtained by replacing a flat wall with two walls of a sinusoidal shape. The walls are obtained by deposition the rollers on a narrow sheet. Depending on the parameters of the sinusoid, the beam can resist not only bending, but also torsion and deformation as result of local and general loss of stability. The manufacture of panels and beams by ribs deposition on a sheet is performed in one installation of the blank at one workplace.
Key words: ribbed panels and beams, layer-by-layer deposition, electric arc deposition, thermal rolling of deposition, rigidity of the T-structure

Pashkov I. N., Shargaev �. �., Bazlova �. �., Bazhenov V. �. � Soldering a thermoelectric module with zinc-based alloy

At present time quite actual problem consists in increasing the operating temperatures as well as increasing the work reliability of the thermoelectric converters, which are widely used in microprocessor electronics, radio electronics and electric power. In the work, the possibility of connecting the elements of the thermoelectric module using solder Zn � 4 % wt. Al is studied. The microstructures of soldered samples are studied and the distribution of elements in soldered joints is researched through the use of scanning electron microscopy and X-ray microanalysis. The necessity of using an aluminum coating to prevent dissolution of the gold and nickel sublayer by solder and destruction of the semiconductor material in the entire temperature range from 440 to 480 �C is experimentally confirmed. The effect of the aluminum coating on the interaction of solder with the base material is studied. The influence of soldering temperature on the formation of a soldered seam and the effect of the applied load on the formation of a soldered seam are studied.
Key words: soldering, coating, solder, thermoelectric module, Peltier module, semiconductor

STANDARDIZATION, PRODUCTION QUALITY

Budkin Yu.V., Taller S. L., Knyazev A. V. � Perfection of the interstate standards general technical systems based on modern information technologies

Developed proposals for updating the standards ESKD, ESTD, ESPD, CAD, ESS ASU, IT are the basis of regulatory information of the product life cycle.
Key words: informatization, standard, design documentation, technological documentation, automated systems, product

INFORMATION

19-th International exhibition of welding materials, equipment and technologies "Weldex/Rossvarka-2019"

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