Keywords
pulse electric current
strong skin-effect
weld seam
metal tape
How to Cite
Abstract
The possibility of using of contactless induction method for the introduction of pulse current into aluminum sheet for processing welding seam is considered. Due to the effect of a magnetic pressure, mechanical stresses occur in the material and induced high-density currents flow. The necessary values of the inductor current, the distribution of magnetic pressure, and the induced current density of the sheet are estimated using the design model of a rectilinear current conductor of circular cross-section. It is found that with a strong skin-effect, the magnetic pressure reaches the yield point only under the condition of an ultrahigh current density of the current contour. The expediency of using of pulse electromagnetic field for seam treatment with high-density currents or combined method with the simultaneous use of high-density currents and electrodynamics methods of action on the seam is substantiated. References 9, figures 8.
References
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Copyright (c) 2018 Yu. Vasetskyi1, I. Kondratenko, O. Pashchyn, K. Dziuba