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Research Papers

The Realization of Low Stress and Nonangular Distortion by Double-Sided Double Arc Welding

[+] Author and Article Information
Hua-Jun Zhang1

College of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China; State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, Chinahuajunzhang@126.com

Guang-Jun Zhang, Hong-Ming Gao, Lin Wu

State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China

Chun-Bo Cai

College of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China

1

Corresponding author.

J. Manuf. Sci. Eng 131(2), 021004 (Mar 06, 2009) (6 pages) doi:10.1115/1.3070512 History: Received November 27, 2007; Revised December 12, 2008; Published March 06, 2009

Control welding residual stress and distortion is extremely important in manufacturing industry. Double-sided double arc welding (DSDAW), which can control residual stress and angular distortion, is developed. Because arc distance between fore and rear torches is the key effective factor of angular distortions in DSDAW, its effects are not clear on the stress and angular distortions. In this study, numerical simulation is used to predict the transient temperature and welding distortion and stress with different arc distances. Meanwhile, the transient temperature and angular distortion are measured. The calculated results are in good agreement with the experimental results. The effects of arc distance on the angular distortion and stress are investigated. Lower stress and nonangular distortion is obtained at arc distances of 0 mm and 50 mm.

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Copyright © 2009 by American Society of Mechanical Engineers
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References

Figures

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Figure 14

Longitudinal residual peak stress and the angular distortion at an arc distance

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Figure 13

Longitudinal residual stress at an arc distance

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Figure 12

Stress at an arc distance of 50 mm

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Figure 11

Longitudinal residual stress versus arc distance

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Figure 10

History plots of stress at different arc distances

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Figure 9

Stress distribution on the transverse section

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Figure 8

Z-direction displacements at an arc distance of 50 mm

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Figure 7

Angular distortion of different arc distances

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Figure 6

Angular displacement history plots

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Figure 3

Three-dimensional finite element model

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Figure 2

Weld plate and distribution of the thermocouple

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Figure 4

Calculated results (at different arc distances)

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Figure 5

Experimental results (at an arc distance of 40 mm)

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