By Ken Healy
Edited by Leslie Gordon, Senior Editor
Published in Machine Design August 26, 2010.
Summary: The technique is the only metal-forming process that can vary part thickness to produce thinner and thicker sections without removing material.
A lesser-known cold-extrusion metal-forming technique, flowforming, makes seamless, near-net, complex, hollow metal parts. The process eliminates welds, which reduces the need for testing, and uses less energy than other manufacturing methods because it wastes less material.
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