Application of Electric Arc Surfacing in the Manufacturing of Three-Dimensional Steel Products

Жаткин, С. С.; Никитин, К. В.; Деев, В. Б.; Pankratov, S. S.; Dunaev, D. A.

doi:10.3103/s0967091220060121

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…сельскохозяйственных машин [7][8][9][10]. Наплавка может быть выполнена для упрочнения новых или восстановления изношенных дисков [11]. Для наплавки использовали сормайт, сталинит, твердые сплавы ВК2 и ВК3, электроды Т-590, Т-620, ОЗН-6, порошковые проволоки ПП-Нп80Х10РМТ, ПП-Нп30Х5Г2СМ, ПП-АН170, порошковые ленты ПЛ-АН101, ПЛ-АН111 4 [12; 13].…”

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The Use of Surfacing Materials to Increase the Durability of Disc Harrow Working Elements

Gryadunov

Sivakov

2021

Engineering Technologies and Systems

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Introduction. For surface tillage operation there widely used disc harrows, working bodies of which are discs wearing out during operation. The wear intensity of discs depends on the wear resistance of their working surfaces, working modes and properties of the cultivated soil. It has been found that an effective way to increase the life of discs is surfacing them with wear-resistant materials. The aim of the work is to study the wear out of surfacing materials, which can be used to harden discs and to make recommendation for the use of these materials in the repair departments of agricultural enterprises. Materials and Methods. Surfacing with electrodes T-590 and powder wires PP-Np200Kh15S1GRT, VELTEK-N560.02 and PP-Np280Kh9F7SG4 were taken as test materials. For wear tests of materials in abrasive mass, there was used an apparatus to simulate the moisture content and composition (sandy loam or loam) of the soil. In the disk-pad tests, the effect of abrasive particle size, load and sliding friction velocity on the wear of the materials was studied. In field tests, wear of the disks made of 65G steel, surfaced toothed and solid disks were monitored. Results. Laboratory studies of the materials revealed the effect of soil moisture and composition, load, abrasive grit and sliding friction velocity on wear. The main factor determining the wear resistance of materials is their structural state. The indexes of wear resistance of surfacing were determined during the laboratory tests and confirmed by field tests. Discussion and Conclusion. Surfacing with flux-cored wire PP-Np280Kh9F7SG4 has the highest wear resistance of the studied materials. The technology of hard-facing disks with modern materials, in particular with flux-cored wire PP-Np280Kh9F7SG4, can be implemented in repair departments of agricultural enterprises when they have the equipment for hard-facing and sharpening of working surfaces.

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The Use of Surfacing Materials to Increase the Durability of Disc Harrow Working Elements

Gryadunov

Sivakov

2021

Engineering Technologies and Systems

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Effect of the structure and properties of welded zones made of Sv-AK5 welding wire at robotic surfacing

Никитин

Dunaev

Жаткин

et al. 2022

Izv.VUZ. Tsvet. Met.

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The study covers the effect of welding arc current (47, 57, and 67 A) on the structure and properties of deposited samples obtained by robotic electric arc surfacing. Sv-AK5 (ER4043) welding wire of the Al-Si system was used as a filler material. Surfacing was carried out on a substrate in the form of a 6 mm thick plate made of AMg6 alloy (Al-Mg system). During surfacing, a typical two-phase structure of a hypoeutectic composition is formed in samples typical for Al–Si alloys with a silicon content of 5 %. Along the height of deposited layers, there is a tendency to structure enlargement in the direction from the substrate, which is associated with the accumulation of heat in layers deposited along the height. As welding arc current increases, α-Al-based dendrites and eutectic silicon crystals are refined with an increase in the density and a decrease in the microhardness of deposited samples. The increase in density is due to the reduced proportion and size of gas pores, as well as refined structural components. The decrease in microhardness is associated with the increased proportion of the soft phase (α-Al dendrites) and decreased quantity of hard eutectic silicon crystals. The average content of silicon in samples deposited in three modes is in the range of 5.46–5.91%, which corresponds to the chemical composition of Sv-AK5 (ER4043) welding wire. Higher welding arc current contributes to an increase in the tensile strength and a slight decrease in the offset yield strength and relative elongation. The features of changes in the mechanical properties of deposited samples are determined by of the specific cast structure of deposited layers formed under conditions of directional solidification in the direction from the substrate.

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Studies of the Structure and Properties of Weld Deposits of the Sv-AK5 Filler Wire in Robotized Deposit Welding

Никитин

Dunaev²,

Жаткин³

et al. 2022

Russ. J. Non-ferrous Metals

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Application of Electric Arc Surfacing in the Manufacturing of Three-Dimensional Steel Products

Cited by 3 publications

References 21 publications

The Use of Surfacing Materials to Increase the Durability of Disc Harrow Working Elements

The Use of Surfacing Materials to Increase the Durability of Disc Harrow Working Elements

Effect of the structure and properties of welded zones made of Sv-AK5 welding wire at robotic surfacing

Studies of the Structure and Properties of Weld Deposits of the Sv-AK5 Filler Wire in Robotized Deposit Welding

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