Process for die forming a tubular member at a reduced...

Details Process for die forming a tubular member at a reduced... Process for die forming a tubular member at a reduced...

F - Mech Eng,Light,Heat,Weapons

16

L

189/52, 113/55

F16L 9/00 (2006.01) B21C 37/083 (2006.01) G02B 6/44 (2006.01)

Patent

CA 1205757

-16- ABSTRACT A process for die forming a tubular member from a metal or metal alloy strip at a reduced drawing force is described herein. The process uses shaping of at least one edge portion of each strip prior to drawing each strip through a die. The shaping reduces the drawing force exerted on the strip material and/or any joint. To form a tube with a substantially closed seam, the strip is provided with an initial cross- sectional area greater than the cross-sectional area of the tube to be formed.

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