Research on arc characteristics and metal transfer modes of ultrasonic assisted GMAW process
Ultrasonic assisted GMAW (U-GMAW) method is a novel process, which combines the ultrasonic wave with gas metal arc welding to improve the process stability and weld quality. The U-GMAW system is developed and the ultrasonic wave is applied by means of acoustic radiation. The arc characteristics and...
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Veröffentlicht in: | 中国焊接 2011-09, Vol.20 (3), p.17-21 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Ultrasonic assisted GMAW (U-GMAW) method is a novel process, which combines the ultrasonic wave with gas metal arc welding to improve the process stability and weld quality. The U-GMAW system is developed and the ultrasonic wave is applied by means of acoustic radiation. The arc characteristics and metal transfer modes are studied in comparison with conventional GMAW process. The arc plasma is compressed and the arc length is shorter than that in conventional GMAW process after the ultrasonic is applied onto the arc. The parameter range of short-circuiting mode is extended and the range of unstable transfer is minimized. The changes in arc characteristics are responsible for changes in metal transfer modes. |
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ISSN: | 1004-5341 |