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Author:

Xiao, J. (Xiao, J..) | Chen, S. J. (Chen, S. J..) (Scholars:陈树君) | Zhang, G. J. (Zhang, G. J..) | Zhang, Y. M. (Zhang, Y. M..)

Indexed by:

Scopus SCIE

Abstract:

The ideal current-independent metal transfer characterized by ensured robust droplet detachment at a relatively small size at any reasonable low current, which can sustain the arc, has been successfully realized in the first part of this study by applying a high-power density pulsed fiber laser to irradiate the droplet neck. The desired one-droplet-per-laser pulse (ODPP) mode was ensured. The droplet flying trajectory deflected from the wire axial due to the use of a single laser. This second part of the study focuses on how relevant parameters influence the metal transfer behavior, especially the droplet deflection that affects the controllability of bead formation. To facilitate the study, the relevant parameters were categorized into three major types: laser positioning, laser pulse waveform, and arc parameters. A series of experiments was conducted to examine their effects on successful ODPP transfer and deflection minimization. In particular, the optimal laser incident point and angle for most submissive droplet detachment and smallest droplet deflection were first determined. Secondly, the minimums of the laser peak power and duration for stable ODPP were determined. Finally, the droplet deflections under different welding currents in the desirable low range, as well as different torch orientations and arc lengths, were measured and analyzed.

Keyword:

Droplet Metal Transfer Process Control Gas Metal Arc Welding (GMAW) Laser Irradiation

Author Community:

  • [ 1 ] [Xiao, J.]Beijing Univ Technol, Minist Educ, Engn Res Ctr Adv Mfg Technol Automot Components, Beijing, Peoples R China
  • [ 2 ] [Chen, S. J.]Beijing Univ Technol, Minist Educ, Engn Res Ctr Adv Mfg Technol Automot Components, Beijing, Peoples R China
  • [ 3 ] [Xiao, J.]Univ Kentucky, Inst Sustainable Mfg, Lexington, KY USA
  • [ 4 ] [Zhang, Y. M.]Univ Kentucky, Inst Sustainable Mfg, Lexington, KY USA
  • [ 5 ] [Zhang, G. J.]Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin, Peoples R China
  • [ 6 ] [Zhang, Y. M.]Univ Kentucky, Dept Elect & Comp Engn, Lexington, KY USA

Reprint Author's Address:

  • 陈树君

    [Chen, S. J.]Beijing Univ Technol, Minist Educ, Engn Res Ctr Adv Mfg Technol Automot Components, Beijing, Peoples R China

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Source :

WELDING JOURNAL

ISSN: 0043-2296

Year: 2016

Issue: 6

Volume: 95

Page: 194S-201S

2 . 2 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:305

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 8

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 8

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