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1999 / Solid Freeform Fabrication Proceedings
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84 Controlling Heat Input, Spatter and Weld Penetration in GMA Welding for Solid Freeform Fabrication

Author I. Kmecko, D. Hu, R. Kovacevic, Southern Methodist University

Source Solid Freeform Fabrication Proceedings, 1999, pp 735-742

Abstract Two new approaches for metal transfer control during the GMA welding process, one based on a laser beam placed through the arc and the other based on real-time image processing, allow lower heat input, reducing spatter and weld penetration. The controlled welding process and CNC milling operation are combined together to form a hybrid rapid prototyping process. Test parts obtained in this procedure show better surface quality, dimensional accuracy and high density, while demonstrating new technological opportunities in rapid prototyping of real metallic parts. (Auth abstract) [References: 10]




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Solid Freeform Fabrication Proceedings can be obtained from:  The Solid Freeform Fabrication Symposium

or contact:

The University of Texas at Austin
Laboratory for Freeform Fabrication / Texas Materials Institute
Mechanical Engineering Dept.
c/o The Solid Freeform Fabrication Symposium
MC C2200
Austin, TX 78712-1063 USA
512-471-3026; 512-471-7681 FX; Email: sffsymp@uts.cc.utexas.edu

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