Electric heating – Metal heating – By arc
Patent
1998-03-20
2000-01-11
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21913051, B23K 909
Patent
active
060138963
ABSTRACT:
An improved method of gas metal arc welding (GMAW) utilizing relatively low current levels. The method includes providing a variable current to form and detach a droplet from a consumable wire electrode. During the welding process, the current is sufficient to produce a droplet at the end of a consumable electrode wire, but not to independently detach the droplet. After the droplet reaches a desired diameter, the current is lowered to induce an oscillation in the droplet. At a selected oscillation of the droplet, the current is increased. The combination of the momentum created by the oscillation of the droplet and the electromagnetic force caused by the increased current serves to detach the droplet from the electrode wire.
REFERENCES:
patent: 3683149 (1972-08-01), Mages et al.
patent: 3781511 (1973-12-01), Ryglol
patent: 5432317 (1995-07-01), Church
patent: 5473139 (1995-12-01), Matsui et al.
patent: 5525778 (1996-06-01), Matsui et al.
patent: 5643479 (1997-07-01), Lloyd et al.
Kovacevic et al.; On-Line Sensing of Metal Transfer for Adaptive Control of GMA Welding; 4.sup.th International Conf. on Trends in Welding Research; Gatlinburg, TN; Jun. 5-8, 1995.
Rhee et al.; Observation of Metal Transfer During Gas Metal Arc Welding; Welding Research Supplement; Oct., 1992; 381-S to 386-S.
Reutzel et al.; Derivation and Calibration of a Gas Metal Arc Welding (GMAW) Dynamic Droplet Model; Trends in Welding Research; Gatlinburg, TN; Jun. 5-8, 1995.
Jones et al.; The Temperal Nature of Forces Acting on Metal Arc Welding; Trends in Welding Research; Gatlinburg, TN Jun. 5-8, 1995.
Watkins et al.; A Dynamic Model of Droplet Growth and Detachment in GMAW; Proceedings of the 3.sup.rd International Conference on Trends in Welding Research; 1992; Jun. 1-5.
Wang et al.; A New Close-Loop Droplet Transfer Control System in the Pulsed GMAW; AWS Annual Meeting, Apr. 1994; Philadelphia, PA.
Ueguri et al.; Study of Metal Transfer in Pulsed GMA Welding Welding Research Supplement; Aug. 1985; 242-S to 250-S.
Wang et al.; Arc Light Sensing of Droplet Transfer and its its Analysis in Pulsed GMAW Process; Welding Research Supplement; Nov. 1997; 458-S to 469-S.
Essers et al.; Arc Control with Pulsed GMA Welding; Welding Journal; Jun. 1984; 26-32.
Siewert et al.; Through-the-Arc Sensing for Measuring Gas Metal Arc Weld Quality in Real Time; Materials Evaluation; Nov. 1992; 1314-1318.
Liu et al; Metal Transfer in Gas Metal Arc Welding Droplet Rate; Welding Research Supplement; Feb., 1989; 52-S to 58-S.
E Liguo
Kovacevic Radovan
Zhang Yuming
Shaw Clifford C.
University of Kentucky Research Foundation
LandOfFree
Method of gas metal arc welding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of gas metal arc welding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of gas metal arc welding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1464144