Effect of Arc Current Ultrasonic-Frequency Pulsation on Plasma Cut Quality

Abstract:

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The present work proposes a novel plasma cutting system using the ultrasonic frequency pulsed arc, and then experimentally investigates the effect of pulse process parameters on cut quality in the frequencies of 20-60 kHz. It is shown that kerf widths, bevel angle, straightness and dross attached level decrease obviously with the appropriate increases in the frequency and amplitude of pulse current. Furthermore, cutting heat affected zone narrows and cut hardness drops clearly in the pulsed cutting. This current pulsation can thus improve plasma cut quality remarkably, and finally leads to a narrower, flatter and more perpendicular cut of better remachinability. Experimental results simultaneously demonstrate that the effectiveness of the ultrasonic-frequency pulsed cutting process developed at the low current of arc.

Info:

Periodical:

Materials Science Forum (Volumes 628-629)

Edited by:

Dongming Guo, Jun Wang, Zhenyuan Jia, Renke Kang, Hang Gao, and Xuyue Wang

Pages:

721-726

DOI:

10.4028/www.scientific.net/MSF.628-629.721

Citation:

J. Y. Wang et al., "Effect of Arc Current Ultrasonic-Frequency Pulsation on Plasma Cut Quality", Materials Science Forum, Vols. 628-629, pp. 721-726, 2009

Online since:

August 2009

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Price:

$35.00

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