ISSN 0491-6441
Journal "Svarochnoe Proizvodstvo"
WELDING, RELATED PROCESSES AND TECHNOLOGIES
UDC 621.791.14
DOI: 10.34641/SP.2025.1074.5.033
Feofanov A. N., Ovchinnikov V. V., Dmitrashko P. S. — Friction stir spot welding of lap joints of a pack of thin sheets made of V1341T1 alloy
The article presents the results of a study of the process of friction stir spot welding of lap joints of V1341T1 aluminum alloy sheets with a thickness of 1 mm. It is shown that the mechanical properties of spot joints of the studied alloy depend on the main parameters of the welding mode: the duration of the welding process, the rotational speed of the working tool, and the axial pressing force on the working tool.
Keywords: V1341T1 aluminum alloy, friction stir spot welding, two-stage friction stir welding, resistance spot welding, spot shear force, spot pull-out force
SCIENTIFIC AND TECHNICAL SECTION
UDC 621.791.36
DOI: 10.34641/SP.2025.1074.5.034
Fedotov I. V., Ivannikov A. A., Terekhova S. M., Dzhumaev P. S., Klyushin I. I., Davydov G. A., Sevryukov O. N. — Influence of ceramic surface modification on the structure and properties of a brazed ZTA/Ti joint
The influence of ceramic surface modification using a laser and titanium hydride (TiH2) on the microstructure and properties of brazed ZTA/Ti joints is investigated. It is established that notching of ZTA ceramics in combination with the application of a titanium hydride coating significantly improves the wettability of the ceramic surface, which is reflected in a drop in the wetting angle to 28° at a temperature of 1000 °C.
Keywords: brazing, surface modification, contact angle, ceramics, titanium, solder
UDC 621.791
DOI: 10.34641/SP.2025.1074.5.035
Parkhomenko A. G., Perlov D. S., Volobuev S. Yu., Volobuev Yu. S., Karakin I. A. — Investigation of the influence of the physical and chemical characteristics of ceramic alloying fluxes for strip electrode surfacing of wear-resistant coatings
Studies of the physical and chemical characteristics of alloying ceramic fluxes built on the basis of the SiO2-Al2O3-MgO-CaF2 slag system, intended for strip surfacing of wear-resistant coatings, are carried out. It is shown that optimization of the component composition of the ceramic flux plays an important role in the development of new compositions and allows significantly improving both the welding and technological characteristics of the flux and increasing the level of alloying of the deposited wear-resistant coatings and the operational characteristics of the manufactured equipment.
Keywords: flux, surfacing, coating, strip electrode, physical and chemical characteristics
UDC 778.64
DOI: 10.34641/SP.2025.1074.5.036
Shishkin D. V., Sliva A. P., Rodyakina R. V., Goncharov A. L. — Investigation of the influence of electron beam scanning parameters on the behavior of the liquid pool in electron beam additive manufacturing
The paper presents the results of a study of the influence of electron beam scanning parameters on the behavior of the liquid pool in electron beam additive manufacturing, obtained using high-speed video recording, which allows recording pool surface oscillations, melting features, and metal transfer during the surfacing process with high temporal resolution.
Keywords: electron beam additive manufacturing, electron beam scanning, influence of electron beam scanning parameters on the behavior of the liquid pool, video recording, dynamic action of the electron beam, stationary heat source
PRODUCTION SECTION
UDC 621.791.052:539.4
DOI: 10.34641/SP.2025.1074.5.037
Lanin A. A., Ilyin S. A., Prokhorova T. V., Reva V. V. — An engineering criterion for the technological crack resistance of welded assemblies — the basis for reducing the development time of welding technologies
Based on many years of research and theoretical developments carried out by OJSC NPO TsKTI, uniform regularities in the development of technological cracks (hot, cold, and reheat) during welding and heat treatment have been established, which develop over time according to the mechanisms of intergranular brittle fracture under the action of temporary and residual welding stresses. Theoretical and numerical modeling, the fundamentals of the methodology, fracture criteria, and experimental methods make it possible to quantitatively analyze a large number of technological options in a short time and select the most stable welding technologies that provide the highest safety factors for technological crack resistance.
Keywords: technological cracks, crack resistance, near-weld zone, welding thermal cycle, threshold value of fracture toughness, intergranular brittle fracture
UDC 621.791
DOI: 10.34641/SP.2025.1074.5.038
Kalugin R. N., Volobuev Yu. S., Darakhvelidze Yu. D., Frolov V. A. — Domestic welding consumables for the manufacture and repair of tubular elements made of chromium steel grades as part of high-temperature equipment of power plants
The results of comprehensive studies of welded joints of martensitic chromium steels manufactured using domestic welding consumables are presented. The analysis of the research results is carried out with an assessment of the resource characteristics of welded joints.
Keywords: welded joints, R91, X10CrMoVNb9-1 and 10Kh9MFB (DI82) steels, TsL-57 electrodes, experimental data, long-term strength
UDC 621.791.92
DOI: 10.34641/SP.2025.1074.5.039
Gulakov S. V., Burlaka V. V., Golovin A. Yu., Psareva I. S. — Features of the selection of power sources for manual arc welding with coated electrodes
The paper presents the results of comparative studies of the influence of the volt-ampere characteristics of power sources for manual arc welding with coated electrodes on the nature of the change in the thermal power of the arc depending on the welding current. The studies were carried out on power sources with different volt-ampere characteristics, including a source with the arc force function enabled. The features of the formation of deposited beads on a vertical surface are shown.
Keywords: welding power source, manual arc welding, arc force, volt-ampere characteristics, arc thermal power
UDC 621.791.039
DOI: 10.34641/SP.2025.1074.5.040
Chavdarov A. V., Popov N. A., Evsyukov A. A. — Application of a welding oscillator in multi-pass welding
A new Russian development of a pendulum programmable welding torch oscillation unit (oscillator) is presented. Studies of a multi-pass weld on 40Kh steel using SV08G2S filler wire are carried out. It is established that the use of an oscillator allows reducing the heat-affected zone on the base metal. The use of an oscillator makes it possible to obtain high-quality filling of the groove in multi-pass welding and to improve the appearance of the capping weld.
Keywords: welding and surfacing equipment, automation of welding processes, welding oscillation unit, weld study
UDC 621.791
DOI: 10.34641/SP.2025.1074.5.041
Dragunov V. K., Glinsky A. V., Zhmurko I. E., Shishkin D. V. — Creation of functionally graded transitions in electron beam welding of pipe adapters made of dissimilar steels
The paper presents a technology for forming functionally graded transitions in continuous multi-pass electron beam welding with a linear decrease in beam power for butt adapters made of dissimilar steels 12Kh1MF and 12Kh18N10T. This approach makes it possible to increase the thermal stability of welded structures operating at high temperatures.
Keywords: functionally graded material, electron beam welding, thermal stability, dissimilar steels, transition joints
INFORMATION
VII International Forum on Robotization - 2025
Journal "Svarochnoe Proizvodstvo"
WELDING, RELATED PROCESSES AND TECHNOLOGIES
UDC 621.791.14
DOI: 10.34641/SP.2025.1074.5.033
Feofanov A. N., Ovchinnikov V. V., Dmitrashko P. S. — Friction stir spot welding of lap joints of a pack of thin sheets made of V1341T1 alloy
The article presents the results of a study of the process of friction stir spot welding of lap joints of V1341T1 aluminum alloy sheets with a thickness of 1 mm. It is shown that the mechanical properties of spot joints of the studied alloy depend on the main parameters of the welding mode: the duration of the welding process, the rotational speed of the working tool, and the axial pressing force on the working tool.
Keywords: V1341T1 aluminum alloy, friction stir spot welding, two-stage friction stir welding, resistance spot welding, spot shear force, spot pull-out force
SCIENTIFIC AND TECHNICAL SECTION
UDC 621.791.36
DOI: 10.34641/SP.2025.1074.5.034
Fedotov I. V., Ivannikov A. A., Terekhova S. M., Dzhumaev P. S., Klyushin I. I., Davydov G. A., Sevryukov O. N. — Influence of ceramic surface modification on the structure and properties of a brazed ZTA/Ti joint
The influence of ceramic surface modification using a laser and titanium hydride (TiH2) on the microstructure and properties of brazed ZTA/Ti joints is investigated. It is established that notching of ZTA ceramics in combination with the application of a titanium hydride coating significantly improves the wettability of the ceramic surface, which is reflected in a drop in the wetting angle to 28° at a temperature of 1000 °C.
Keywords: brazing, surface modification, contact angle, ceramics, titanium, solder
UDC 621.791
DOI: 10.34641/SP.2025.1074.5.035
Parkhomenko A. G., Perlov D. S., Volobuev S. Yu., Volobuev Yu. S., Karakin I. A. — Investigation of the influence of the physical and chemical characteristics of ceramic alloying fluxes for strip electrode surfacing of wear-resistant coatings
Studies of the physical and chemical characteristics of alloying ceramic fluxes built on the basis of the SiO2-Al2O3-MgO-CaF2 slag system, intended for strip surfacing of wear-resistant coatings, are carried out. It is shown that optimization of the component composition of the ceramic flux plays an important role in the development of new compositions and allows significantly improving both the welding and technological characteristics of the flux and increasing the level of alloying of the deposited wear-resistant coatings and the operational characteristics of the manufactured equipment.
Keywords: flux, surfacing, coating, strip electrode, physical and chemical characteristics
UDC 778.64
DOI: 10.34641/SP.2025.1074.5.036
Shishkin D. V., Sliva A. P., Rodyakina R. V., Goncharov A. L. — Investigation of the influence of electron beam scanning parameters on the behavior of the liquid pool in electron beam additive manufacturing
The paper presents the results of a study of the influence of electron beam scanning parameters on the behavior of the liquid pool in electron beam additive manufacturing, obtained using high-speed video recording, which allows recording pool surface oscillations, melting features, and metal transfer during the surfacing process with high temporal resolution.
Keywords: electron beam additive manufacturing, electron beam scanning, influence of electron beam scanning parameters on the behavior of the liquid pool, video recording, dynamic action of the electron beam, stationary heat source
PRODUCTION SECTION
UDC 621.791.052:539.4
DOI: 10.34641/SP.2025.1074.5.037
Lanin A. A., Ilyin S. A., Prokhorova T. V., Reva V. V. — An engineering criterion for the technological crack resistance of welded assemblies — the basis for reducing the development time of welding technologies
Based on many years of research and theoretical developments carried out by OJSC NPO TsKTI, uniform regularities in the development of technological cracks (hot, cold, and reheat) during welding and heat treatment have been established, which develop over time according to the mechanisms of intergranular brittle fracture under the action of temporary and residual welding stresses. Theoretical and numerical modeling, the fundamentals of the methodology, fracture criteria, and experimental methods make it possible to quantitatively analyze a large number of technological options in a short time and select the most stable welding technologies that provide the highest safety factors for technological crack resistance.
Keywords: technological cracks, crack resistance, near-weld zone, welding thermal cycle, threshold value of fracture toughness, intergranular brittle fracture
UDC 621.791
DOI: 10.34641/SP.2025.1074.5.038
Kalugin R. N., Volobuev Yu. S., Darakhvelidze Yu. D., Frolov V. A. — Domestic welding consumables for the manufacture and repair of tubular elements made of chromium steel grades as part of high-temperature equipment of power plants
The results of comprehensive studies of welded joints of martensitic chromium steels manufactured using domestic welding consumables are presented. The analysis of the research results is carried out with an assessment of the resource characteristics of welded joints.
Keywords: welded joints, R91, X10CrMoVNb9-1 and 10Kh9MFB (DI82) steels, TsL-57 electrodes, experimental data, long-term strength
UDC 621.791.92
DOI: 10.34641/SP.2025.1074.5.039
Gulakov S. V., Burlaka V. V., Golovin A. Yu., Psareva I. S. — Features of the selection of power sources for manual arc welding with coated electrodes
The paper presents the results of comparative studies of the influence of the volt-ampere characteristics of power sources for manual arc welding with coated electrodes on the nature of the change in the thermal power of the arc depending on the welding current. The studies were carried out on power sources with different volt-ampere characteristics, including a source with the arc force function enabled. The features of the formation of deposited beads on a vertical surface are shown.
Keywords: welding power source, manual arc welding, arc force, volt-ampere characteristics, arc thermal power
UDC 621.791.039
DOI: 10.34641/SP.2025.1074.5.040
Chavdarov A. V., Popov N. A., Evsyukov A. A. — Application of a welding oscillator in multi-pass welding
A new Russian development of a pendulum programmable welding torch oscillation unit (oscillator) is presented. Studies of a multi-pass weld on 40Kh steel using SV08G2S filler wire are carried out. It is established that the use of an oscillator allows reducing the heat-affected zone on the base metal. The use of an oscillator makes it possible to obtain high-quality filling of the groove in multi-pass welding and to improve the appearance of the capping weld.
Keywords: welding and surfacing equipment, automation of welding processes, welding oscillation unit, weld study
UDC 621.791
DOI: 10.34641/SP.2025.1074.5.041
Dragunov V. K., Glinsky A. V., Zhmurko I. E., Shishkin D. V. — Creation of functionally graded transitions in electron beam welding of pipe adapters made of dissimilar steels
The paper presents a technology for forming functionally graded transitions in continuous multi-pass electron beam welding with a linear decrease in beam power for butt adapters made of dissimilar steels 12Kh1MF and 12Kh18N10T. This approach makes it possible to increase the thermal stability of welded structures operating at high temperatures.
Keywords: functionally graded material, electron beam welding, thermal stability, dissimilar steels, transition joints
INFORMATION
VII International Forum on Robotization - 2025
