NASA NTRS · 19660000009
Coiled sheet metal strip opens into tubular configuration
Abstract
Copper alloy is converted into a spring material that can be rolled into a compact coil which will spontaneously open to form a tube in the long direction of the strip. The copper alloy is passed through a furnace at a prescribed temperature while restraining the strip in the desired tubular configuration.
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Park, J. J.. 1966-01-01. Coiled sheet metal strip opens into tubular configuration. https://ntrs.nasa.gov/citations/19660000009
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