NASA NTRS · 19950065399
Improved Back-Side Purge-Gas Chambers For Plasma Arc Welding
Abstract
Improved chambers for inert-gas purging of back sides of workpieces during plasma arc welding in keyhole (full-penetration) mode based on concept of directing flows of inert gases toward, and concentrating them on, hot weld zones. Tapered chamber concentrates flow of inert gas on plasma arc plume and surrounding metal.
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Ezell, Kenneth G., Mcgee, William F., Rybicki, Daniel J.. 1995-05-01. Improved Back-Side Purge-Gas Chambers For Plasma Arc Welding. https://ntrs.nasa.gov/citations/19950065399
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