Electromagnetic Welding of Tubular Joints for Nuclear Applications
Electromagnetic Welding (EMW) technology is a promising and new manufacturing technology for welding of stainless steel alloys and aluminium alloys for nuclear applications. It has significant advantages over conventional welding techniques. A primary characteristic of this process is the use of non-contact electromagnetic forces to achieve welding of various metal workpieces. In this process, the welding is carried out by impact, when the workpieces are accelerated towards each other by the Lorentz force, produced due to magnetic field and the induced current in workpiece. The capacitor bank is required for generating high pulse discharge current at high frequency in the coil, which generates maximum magnetic pressure on the workpiece to obtain the weld. Electromagnetic Welding machines and weld coils are designed and developed for the welding of aluminium (Al 6061) and stainless steel (SS316L) alloys. This technique enables us to join similar and dissimilar metals, which are very difficult to weld by other conventional welding techniques.
KeywordsElectromagnetic welding Capacitor bank Coil Magnetic field
The authors wish to express thanks to Ms. Shobhna Mishra, Smt. Renu Rani, Shri J. M. V. V. S. Aravind, Shri Sukant Mishra, Shri Ekansh Mishra, Shri Pankaj Deb, Shri Ramanand Raman, Shri Nitin Waghmare and Dr. Rishi Verma of Pulsed Power and Electromagnetic Division and Shri Satendra Kumar, Shri M. R. Kulkarni, Shri P. C. Saroj and Shri Hitesh Choudhary of Accelerator and Pulsed Power Division for the development of EMW systems, for fruitful and useful discussions and experiments. The authors would also like to thank Shri R. K. Rajawat, Associate Director BTDG and Shri D. Venkateshwarlu, Regional Director, BARC Visakhapatnam for the motivation and support to carry out EMW research work. The author would also thank the organizers of AIMTDR-2016 to allow and present the research work in the conference.
- 2.Brown, W.F., Bandas, J., Olson, N.T.: Pulsed magnetic welding of breeder reactor fuel pin end closures. Weld. J. 57(6), 22–26 (1978)Google Scholar
- 4.Kumar, R., Saroj, P.C., Kumar, S., Kulkrni, M.R., Kolge, T.S., Sharma, S.K., Shajju, A., Das, C., Sharma, A., Shyam, A., Bora, D.: Design and development of 100 KJ, 75 KHz electro-magnetic pulse welding system for ODS. In: IEEE Pulsed Power Conference, Texas Tech University, Austin, USA (2015)Google Scholar
- 5.Kore, S.D., Date, P.P., Kulkarni, S.V., Kumar, S., Rani, D., Kulkarni, M.R., Desai, S.V., Rajawat, R.K., Nagesh, K.V., Chakravarty, D.P.: Application of electromagnetic impact technique for welding copper-to-stainless steel sheets. Int. J. Adv. Manuf. Technol. 54(9), 949–955 (2011)CrossRefGoogle Scholar
- 6.Rajawat, R.K., Desai, S.V., Kulkarni, M.R., Rani, D., Nagesh, K.V., Sethi, R.C.: Electromagnetic forming—a technique with potential applications in accelerators. In: 3rd Asian Particle Accelerator Conference, p. 187, Gyeongju, Korea, 22–26 Mar 2004Google Scholar
- 9.Desai, S.V., Kumar, S., Satyamurthy, Chakravartty J.K., Chakravarthy, D.P.: Analysis of the effect of collision velocity in electromagnetic welding process of aluminium strips. Int. J. Electromag. Mechan. 34(1), 131–139 (2010)Google Scholar
- 10.Loncke, K.: An exploratory study into the feasibility of magnetic pulse welding. Master thesis, Ghent University, pp. 1–147 (2009)Google Scholar
- 11.Zhang ,Y.: Investigation of magnetic pulse welding on lap joint of similar and dissimilar materials. The Ohio State University (2010)Google Scholar
- 12.Sartangi, P.F., Mousvi, S.A.A.A.: Experimental investigations on explosive cladding of cp-titanium/AISI 304 stainless steel. In: Lee, C., Lee, J.B., Park, D.H., Na, S.J. (eds.) Advanced Welding and Micro Joining/Packaging for the 21st Century, vol. 580–582, pp. 629–632. Trans Tech Publications Ltd., Stafa-Zurich (2008)CrossRefGoogle Scholar
- 14.Kore, S.D., Date, P.P., Kulkarni, S.V.: Numerical modeling of electromagnetic welding. Int. J. Appl. Electromag. Mech. 32(1), 1–19 (2010)Google Scholar
- 16.Grover, F.W.: Inductance calculations: working formulas and tables. Dover Publications Inc., New York (1946)Google Scholar
- 17.Knight, D.W.: Solenoid inductance calculation, January (2013) http://g3ynh.info/zdocs/magnetics/Solenoids.pdf