Materials Transactions Online

Materials Transactions, Vol.52 No.05 (2011) pp.999-1002
© 2011 The Japan Institute of Light Metals

Joining of Aluminum to Steel Pipe by Magnetic Pulse Welding

Ji-Yeon Shim1, Ill-Soo Kim2, Moon-Jin Kang3, In-Ju Kim1, Kwang-Jin Lee4 and Bong-Yong Kang1

1Environmentally Materials & Components Center, KITECH, Korea
2Department of Mechanical Engineering, Mokpo National University, Korea
3Advanced Welding & Joining Technology R&D Department, KITECH, Korea
4Automotive Components Center, KITECH, Korea

Magnetic Pulse Welding (MPW) is not only one of the most useful welding processes for the dissimilar metal joining which uses cylindrical materials such as a pipe, but also a new technology for metal welding by means of repulsive force on account of the interaction between magnetic part of working coil and current induced in an outer pipe. Since the factors effected on quality of MPW are the charged voltage, the gap between inner pipe and outer pipes and a thickness of an outer pipe, the this study was focused on the investigation of the effect of process parameters and development of the mathematical model for the prediction on a quality of joint using Response Surface Method (RSM). To achieve the objective, the MPW equipment manufactured by WELDMATE CO., LTD. has been employed and applied for the materials such as the Al 1070, SM45C for Al and steel pipe respectively. After the sequent experiment, leakage test has been done to verify efficiency of the welding. The experimental values have been shown the good agreement with the predicted ones, indicating suitability of mathematical model employed. It is concluded that the gap between outer pipe and inner rod is one of major process parameters for influence on quality of joint while Al/steel pipe welding using the MPW.

(Received 2010/10/5; Accepted 2011/3/2; Published 2011/5/1)

Keywords: magnetic pulse welding, dissimilar metal joining, response surface method, process parameter

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