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Improvement of Welding Performances Using Wire Feeding Speed Control
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| Author(s) |
J. S. Gho; Y. M. Chae; G. H. Choe; F. C. Lee |
| Abstract |
In the gas metal arc welding(GMAW), the
welding current is determined by wire feeding
speed. Hence the constant wire feeding speed
control is very important for arc stability. The
fluctuation by external disturbances would
deteriorate the welding performances such as
more generated spatters and irregularly formed
bead surface. However most wire feeder
controllers have simple speed control loop of
the phase control in the welding machines.
To improve this, the four-quadrant chopper
circuit is used for instantaneous speed and
torque control. The proposed controller has two
loops for speed and current control. The
welding performances are compared with those
of the conventional scheme, and hence the
reduced spatter generation and better wire
feeding speed can be obtained. This can verify
the feasibility of the proposed scheme. |
| Download |
| Filename: | EPE1999 - PP00593 - Choe.pdf |
| Filesize: | 201.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-06 by System |
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