An experimental study on rotating behavior of arc during magnetically impelled arc butt welding.

Satoh, Tsugihiko; Katayama, Joichi; Ioka, Seiji; Ôtani, Midori

doi:10.2207/qjjws.8.71

Cited by 4 publications

(5 citation statements)

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“…A pair of coil solenoids was constructed by winding an enamel wire 960 turns respectively. A constant current d.c. power source was used for supplying the exciting current to the solenoid [5].…”

Section: Methodsmentioning

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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Section: Methodsmentioning

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 mechanical property of welded joints of pipes of 16mm wall thickness was discussed. Sato, Katayama, Ioka, and Otani [4] studied the phenomenon of the arc initiation on the ID of steel pipes and then shifting to the OD, especially when welding thick cross-sections. Glickstein [5] developed a one-dimensional model of the welding arc that considers heat generation by the joule effect and heat losses by radiation and conduction in order to study the effects of various gases and gas mixtures for welding applications.…”

Section: Introductionmentioning

confidence: 99%

“…Although several studies [1][2][3][4][5][6][7][8][9][10] had reported MIAB welding, very little has been mentioned about the design and development of a laboratory test module for MIAB welding process. An attempt is made here to develop a laboratory module for MIAB welding and 2D finite element model (FEM) to investigate the impact of various parameters namely the welding voltage, welding current, magnetic coil voltage, magnetic flux density distribution and the magnetic coil current on the speed of arc rotation.…”

Section: Introductionmentioning

confidence: 99%

Some studies on the electromagnetic aspects governing the magnetically impelled arcs through experimentation, finite element simulation and statistical analysis

Vendan

Manoharan

Buvanashekaran

et al. 2009

JAE

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In this study, Magnetically Impelled Arc Butt welding (MIAB) laboratory setup for welding carbon steel tubes of small wall thickness is designed and developed. Magnetically Impelled Arc Butt welding is an efficient two phase process which is used in highly automated factory production lines in high volume industries such as automotive manufactures. In this process, an electric arc generated between aligned and properly gapped pipes are made to rotate along the peripheral butt ends. This arc swiftly 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 externally controlled magnetic field created by magnetic systems. The arc acts as a heating source providing the required heat to the butt ends of the pipes. Further an application of force on the pipe along the axial direction sets the weld. The electromagnetic force responsible for the arc rotation is governed by the magnetic flux density in the gap, the arc current and the arc length (gap size). To be precise the radial magnetic flux density is a critical factor in arc rotation and weld quality. Preliminary trials are conducted to understand the process parameters. Tubes with 45 mm Outer Diameter with 3 mm thickness are used for conducting the investigations. Further, for the first time an attempt is made to analyze the effects of weld input parameters such as welding current, welding voltage, magnetic coil voltage and magnetic coil current on the arc speed in MIAB welding process using software package STATA. The aim of this study also is to explore the distribution of the magnetic flux density in the tube gap region using finite element code ANSYS .The analysis emphasizes that the most significant factor that governs the arc speed is magnetic coil current (that creates magnetic flux density) and the welding current.

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“…The mechanical property of welded joints of pipes of 16‐mm wall thickness was discussed. Sato et al 3 studied the phenomenon of the arc initiation on the ID of steel pipes and then shifting to the OD, especially when welding thick cross‐sections. Photo‐transistors were used to assess the movement of the arc.…”

mentioning

confidence: 99%

“…Although several studies 1–14 had reported MIAB welding, very little has been mentioned about the design and development of a laboratory test module for MIAB welding process. An attempt is made here to develop a laboratory module for MIAB welding and to investigate the impact of various parameters, namely the welding voltage, welding current, magnetic coil voltage, and magnetic coil current on the speed of arc rotation.…”

mentioning

confidence: 99%

Experimental and Statistical Analysis of Impact of Various Parameters on Arc Rotation in Miab Welding Process by Developing a Laboratory Module

Vendan¹,

Manoharan

Nagamani

et al. 2009

Experimental Techniques

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An experimental study on rotating behavior of arc during magnetically impelled arc butt welding.

Cited by 4 publications

References 0 publications

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

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

Some studies on the electromagnetic aspects governing the magnetically impelled arcs through experimentation, finite element simulation and statistical analysis

Experimental and Statistical Analysis of Impact of Various Parameters on Arc Rotation in Miab Welding Process by Developing a Laboratory Module

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