Magnetically impelled arc butt welding of aluminium pipes

Mori, S.; Yasuda, Katsuhiko

doi:10.1080/09507118909449057

Cited by 12 publications

(12 citation statements)

References 2 publications

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“…Ze względu jednak na niższą gęstość pola magnetycznego metali nieżelaznych niż stali stosowane jest niekiedy umieszczanie rdzenia żelaznego w środku zgrzewanych elementów nieżelaznych [5,14]. Szczegółowa analiza wyraźnie wskazuje, że intensyfikacja prac nad tą techniką miała miejsce na przeło-mie lat 70. i 80.…”

Section: Zgrzewanie Wybranych Materiałów Inżynierskichunclassified

tendencje rozwojowe zgrzewania łukiem wirującym w aspekcie zastosowań w przemyśle motoryzacyjnym

Piwowarczyk

Małachowska

Sokołowski

2013

Przegląd Spawalnictwa

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Section: Zgrzewanie Wybranych Materiałów Inżynierskichunclassified

tendencje rozwojowe zgrzewania łukiem wirującym w aspekcie zastosowań w przemyśle motoryzacyjnym

Piwowarczyk

Małachowska

Sokołowski

2013

Przegląd Spawalnictwa

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“…The foregoing studies on the steel pipe welding show that the stronger the radial magnetic¯ux density becomes, the more the arc rotation speed increases, the more uniformly the pipe ends are heated and melted, and a better welding result is obtained. Therefore, in order to have a constant high-quality joint, it is necessary that a magnetic¯ux density, as large as possible, be formed in the pipe gap space [4].…”

Section: Principle Of Miab Weldingmentioning

confidence: 99%

A study on the numerical analysis of magnetic flux density by a solenoid for magnetically impelled arc butt welding

Kim

Choi

2003

Proceedings of the Institution of Mechanical Engineers, Part B:

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The magnetically impelled arc butt (MIAB) welding process uses a rotating arc as its heat source and is known as an e cient method for pipe butt welding. The arc in the gap of the pipe butt joints is rotated along the circumferential weld line by the electromagnetic force resulting from the interaction of the arc current and the magnetic ®eld in the gap. The electromagnetic force is determined by the magnetic¯ux density in the gap, the arc current and the arc length (i.e. gap size). In particular, the radial magnetic¯ux density is an important factor in arc rotation and weld quality.This paper proposes a two-dimensional ®nite element model for the analysis of magnetic¯ux density distributions in the MIAB welding process. The magnetic¯ux density is mainly dependent on the gap size between two pipes, the position of the exciting coil that generates the magnetic ®eld, the exciting current in the coil, and the relative permeability of the pipes. Thus, the relations between the magnetic ux density and the above main factors were investigated through experiments and analyses. Experiments were performed on the steel pipes (outer diameter 48.1 mm and thickness 2.0 mm). From the analyses and experiments, it was revealed that the magnetic¯ux density in the gap between the pipes increases when there is an increasing exciting current and relative permeability, and a decreasing distance from the gap centre to the coil and gap size. It is considered that the numerical analysis model proposed in this study can be used as a useful means when designing an electromagnetic system for the MIAB welding machine.

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“…In this study, it has been proved that welds of high quality and reliability can be obtained along with high efficiency, and that welding equipment can be used very effectively to lay pipelines. Mori and Yasuda [3] described the MIAB welding process developed for the welding of non-ferrous and non-ferromagnetic metals such as aluminium and copper. Ganowski [4] presents a survey of the current position and mechanical development of the magnetic arc welding process.…”

Section: Introductionmentioning

confidence: 99%

Magnetic flux distribution modelling of magnetically-impelled arc butt-welding of steel tubes using finite-element analysis

Vendan

Manoharan

Buvanashekaran

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part C:

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Magnetically-impelled arc butt-welding (MIAB) is a pressure-welding process. In this process, heat is generated prior to forging by an arc created between two clamped and aligned tubes. This arc rapidly rotates along the peripheral edges of the tubes to be welded due to the electromagnetic force resulting from the interaction of the arc current and the magnetic field in the gap. To be precise, the magnetic flux density is the significant parameter that governs the arc rotation and the weld quality. This paper presents a three-dimensional finite-element model to determine the magnetic flux density distribution in the MIAB welding process. The objective of this study is to perform a non-linear electromagnetic analysis using the finite-element package ANSYS, and to explore the interdependence of MIAB welding parameters such as gap size, exciting current in the coil, and coil position from the weld centre, which influence the electromagnetic force generated in the welding process and weld quality. The results of this analysis are verified with the available experimental data for steel tubes (outer diameter 50 mm and thickness 2 mm). The results obtained using finite-element analysis establish that the magnetic flux density distribution in the gap increases with increasing exciting current and decreasing gap size and coil position from the weld centre.

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Magnetically impelled arc butt welding of aluminium pipes

Cited by 12 publications

References 2 publications

tendencje rozwojowe zgrzewania łukiem wirującym w aspekcie zastosowań w przemyśle motoryzacyjnym

tendencje rozwojowe zgrzewania łukiem wirującym w aspekcie zastosowań w przemyśle motoryzacyjnym

A study on the numerical analysis of magnetic flux density by a solenoid for magnetically impelled arc butt welding

Magnetic flux distribution modelling of magnetically-impelled arc butt-welding of steel tubes using finite-element analysis

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