Journal "Svarochnoe Proizvodstvo"ISSN 0491-6441
Contents (№02 2022)
to russian


DOI: 10.34641/SP.2022.1047.2.011
Ershov A. A., Ershov A. V. — Influence of interfacial tension forces on the formation of deposited metal during automatic submerged welding

Practical tests of techniques for determining the interfacial tension at the slag-metal boundary during automatic welding under a flux layer have been carried out. A mathematical model is proposed that allows describing the profile of the deposited roller according to known values: the geometric dimensions of the deposited roller and the physical parameters of the welding flux.
Key words: automatic welding, welding flux, formed forms of the melting zone

DOI: 10.34641/SP.2022.1047.2.012
Shneerson V. Ya. — Classification of small-scale weld periodic structures formed in fusion welding of metals

In the paper, the author offers the classification of small-scale periodic structures, which form the weld surface geometry and weld inner structure. The paper presents the formation mechanism of one of the most important types of these structures — weld layered inhomogeneity that is connected with the weld surface geometry, and determines the parameters of certain types of the small-scale structures.
Key words: weld periodic structures, classification of small-scale structures, weld layered inhomogeneity, parameters of structures

Koshlakov V. V., Rizakhanov R. N., Semenov V. N., Sigalaev S. K., Ivanov A. V., Dankova T. E., Konyukova K. S., Svetlov S. K. — Hydrogen and its effect on the properties of heat-resistant alloys and high-strength steels

The main regularities of the processes of heat-hardening of heat-resistant alloys and high-strength steels and its influence on their properties are investigated. It is established that the main source of flooding is electroplating of alloys and steels. Hydrogen in the EP-202 alloy causes a change in its microstructure, contributes to the appearance of mechanical stresses and microcracks during soldering of alloy parts with copper-silver solder, reduces the ductility of the alloy. A method is proposed to prevent flooding of the alloy when coating the soldering zone Ni, Cu, Ag by applying periodic changes in the direction of the galvanic current during electrodeposition of the coating. Frequent flooding of the treated surface during metal cutting with the use of COOLANT (based on organic oils) was revealed. Prevention of flooding during machining occurs when synthetic components are used in coolant instead of organic oils.
Key words: heat-resistant alloys, high-strength steels, flooding, electroplating of steels and alloys, stresses, microcracks, soldering, copper-silver solder, cutting, coolant


DOI: 10.34641/SP.2022.1047.2.014
Feofanov A. N. — Complex assembly-welding automated process equipment for automotive industry

Considered typical examples of complex automated assembly and welding and automated mass production lines.
Key words: assembly-welding process equipment, robotic technological complex, layout lines

DOI: 10.34641/SP.2022.1047.2.015
Pavlov N. V., Kryukov A. V., Sapozhnikov S. B., Zernin Ye. A., Kolmogorov D. Ye. — Computer application for the metal constructions assembly and welding processing steps standardization

An “estimator” automated application to calculate time allowance for metal ware assembling–welding is designed. Its principles of operation, main parts and their interrelation are considered.
Key words: automation, designing, processing, assembling, welding, rate setting

DOI: 10.34641/SP.2022.1047.2.016
Mchedlov S. G. — A new device for determining the adhesion strength of a gas-thermal coating

A new device has been created to determine the main indicators of the quality of a gas-thermal coating — the strength of its adhesive and cohesive bond on samples.
Key words: gas-thermal coating, adhesion, cohesion, sample

DOI: 10.34641/SP.2022.1047.2.017
Feofanov A. N., Skhirtladze A. G. — Friction welding of plastic parts

The technologies of friction welding of plastic parts are described. The objects of application of friction welding are given. The process of friction welding of thermoplastics is considered. Recommendations on the use of plastic welding by various methods, process modes are given.
Key words: industry, plastic, thermoplastics, welding, friction, process, heating, pressure, energy, activation, surface, contact, zone, method, vibration, condition, temperature, thermal destruction, rotation, period, parameter, mode, speed, cross-section, billet, structure, joint, grate, sediment, melt, equipment, productivity

DOI: 10.34641/SP.2022.1047.2.018
Sadovsky P. V., Lebedev Yu. A. — The use of equipment manufactured by Finnish Kemppi in welding critical structures for the petrochemical industry

The experience of using equipment manufactured by Finnish Kemppi in welding critical structures for the petrochemical industry is given.
Key words: welding torches, feeding devices, power sources, welding machines

DOI: 10.34641/SP.2022.1047.2.019
Golovkin P. A. — Improving the microassamblies cases quality of the electronic microwave devices be using forging operations

The possibilities of improving the quality of the microassemblies of microwave devices are being investigated in terms of improving their vacuum density with the use of forging operations in their manufacture.
Key words: microminiaturization, microassemblies, hermetic housings, vacuum density, aluminum alloys, material structure, hot-rolled plates, extruded rods, complex forging


DOI: 10.34641/TM.2021.231.9.031
Barzov A. A., Korneeva V. M., Korneev S. S., Feofanov A. N. — Expert justification of the effectiveness of the application of the ultra-jet method of express determination of the defect structure of heterogeneous materials

The possibilities of various methods for estimating the distribution of initial defects in structurally inhomogeneous materials such as ceramics and composites are considered. A comprehensive expert-analytical analysis shows a high potential for the effectiveness of express solutions to this problem by studying the erosion products of these materials under the action of a high-speed hydraulic jet.
Key words: method for estimating the distribution of defects, structurally inhomogeneous materials, ceramics and composites, expert analytical analysis, erosion products, high-speed hydraulic jet

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