Influence of Welding With Two-Jet Gas Shielding On the Shaping of a Welding Joint

Chinakhov, D. A.; Chinakhova, E. D.; Grichin, S. V.; Gotovschik, Y M

doi:10.1088/1757-899x/125/1/012013

Cited by 15 publications

(10 citation statements)

References 1 publication

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“…3. Oscillograms and frames of high-speed video recording: a) traditional single-jet gas shielding; b) double-jet gas shielding As the gas-dynamic action of active shielding gas jet upon the processes in the weld area increases the controlled change of the chemical composition and structure of the weld metal [7,15] and, as a result, change of the performance characteristics of the weld joints also take place. The dynamics of the weld pool changes as well and here two aspects should be considered and taken into account (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…It is obvious that the welding method with application of double-jet gas shielding ensures more stable, better mechanic properties. The metal of the weld becomes stronger with some reduction of plasticity which is an indirect indicator of more intense stirring of metal in the weld pool [7,15]. Chemical analysis of the weld metal was completed on the welded samples ( When welding with application of double-jet gas shielding the content of chromium increases by 0.05%.…”

Section: Resultsmentioning

confidence: 99%

“…The amount of manganese is reduced by 0.09% and that of silicon -by 0.03%. The explanation for this fact is that more intense gas-dynamic action on the droplet of molten electrode metal when welding with application of double-jet gas shielding results in increased frequency of droplet transfer, reduction of their size and growth of their surface activity [7,15]. When changing the gas-dynamic action we can control the electrode metal droplets transfer, the chemical composition of the weld metal, thermal and other processes of consumable electrode welding and, this way, form the required properties of the weld joints.…”

Section: Resultsmentioning

confidence: 99%

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2019

IOP Conf. Ser.: Earth Environ. Sci.

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Strength of laser welded joints of polypropylene composites V Votrubec, P Hisem, L Vinšová et al. -Hardness variation of welded boron steel using continuous wave (CW) and pulse wave (PW) mode of fiber laser K I Yaakob, M Ishak, S R A Idris et al. Abstract. The author considers the gas-dynamic action of the shielding gas jet during consumable electrode welding on the processes in the welding area and properties of the weld joints produced from alloyed high-strength steel 30HGSA. The results of the research on the gas-dynamic action of the jet on the process of consumable electrode welding are provided. It was established that the method of consumable electrode welding with double-jet gas shielding ensures regulated gas dynamics in the welding area and allows controlling the electrode metal transfer, the chemical composition of the weld metal, stabilizing the process of welding and ensures stable high mechanic properties of the weld joints. Introduction.At the present time welding is applied for producing permanent joints of the widest range of metallic, nonmetallic and composite constructional materials under the conditions of earth atmosphere, World's ocean and aerospace. In spite of continuously growing application of light metal alloys, polymer and composite materials in construction, steel remains the basic constructional material. Consumable electrode welding in the atmosphere of shielding gases stays one of the main production methods in the process of developing the material basis of modern civilization.The history of the thermal processes determines the productivity of the basic metal and welding filler fusion, trend and completeness of the metallurgic processes in the weld pool, conditions of weld and heat-affected zone metal structure formation, performance characteristics of the weld joints [1][2][3][4][5].The shielding gas is normally used to protect the welding area from the harmful action of the air but, under certain conditions, it can become the instrument for controlling the processes in the weld zone and the properties of weld joints. A number of studies [6-13 and other] investigating the influence of the shielding gas flow upon the process of consumable electrode welding notice that increase in the gas flow rate is associated with improvement of the quality of the weld zone protection, weld formation, welding process stabilization, improvement of the weld metal properties. Increase of the shielding gas flow ensures increased hardness of the gas jet which is especially important when completing the welding works in an exposed position [2,6,10].

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

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“…This is one of the key factors affecting the development. One of the principal methods in this direction is the use of modern technologies for joining materials in the manufacture of shape complex structures of various sizes and purpose [1,6,14,[20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Laser Welding of Stainless Steel 321 in Different Welding Positions

Bernatskyi

Berdnikova

Sydorets

et al. 2021

SSP

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It was revealed that spatial position during laser welding of AISI 321 stainless steel influences the processes in the weld pool and the process of its crystallization. The geometry, structure, distribution of chemical elements depend on the cooling rate of the welded joint, which varies in different spatial positions during laser welding of stainless steel AISI 321. To achieve the lowest variance of results and the maximum values of mechanical characteristics of the welded joints of AISI 321 stainless steel it is recommended to produce laser welding in a vertical position.

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“…It is known that the mechanical properties and resistance to the formation of cold cracks in welded joints of low-alloyed highstrength steels are significantly affected by the structure of the weld metal and HAZ of the joints [1, 3, 5, 7-9, 13, 17, 18, 26-30]. At present, the processes of structure formation in the weld metal and HAZ of welded joints during arc welding are studied quite well [31][32][33][34][35][36]. The effect of the thermal cycle in hybrid laser-arc welding on the structure and properties of the weld metal and the HAZ remains insufficiently studied, since, as a result of the synergistic effect, during such a process, the above parameters can vary significantly.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale Structures of Laser–Arc Welded Joints of High-Strength Low-Alloy Steels

2020

Nanosist. Nanomater. Nanotehnol.

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Ключові слова: низüколеґована високоміöна сталü, гібридна лазернодугове зварювання, структурно-фазовий склад, нанорозмірні структури, густина дислокаöій, тріщиностійкістü. Ключевые слова: низколегированная высокоïрочная сталü, гибридная лазерно-дуговая сварка, структурно-фазовый состав, наноразмерные структуры, ïлотностü дислокаöий, трещиностойкостü.

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Influence of Welding With Two-Jet Gas Shielding On the Shaping of a Welding Joint

Cited by 15 publications

References 1 publication

DMAIC Method of Quality Improvement of Ground Works Processes: Case Study

DMAIC Method of Quality Improvement of Ground Works Processes: Case Study

Laser Welding of Stainless Steel 321 in Different Welding Positions

Nanoscale Structures of Laser–Arc Welded Joints of High-Strength Low-Alloy Steels

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