Method and device for producing a closed metal profile or...

Details Method and device for producing a closed metal profile or... Method and device for producing a closed metal profile or...

B - Operations, Transporting

21

B

B21B 19/00 (2006.01) B21C 37/08 (2006.01) B21C 37/15 (2006.01)

Patent

CA 2464912

A method and a roll-forming system for producing a metal profile are provided, wherein the wall thickness of the metal profile varies along its longitudinal axis. For this purpose, a sheet-metal strip with a thickness that varies along its length is used. Before welding together the profile or tube, which is manufactured through shaping into a closed profile or tube, this piece is sized to a desired outer diameter and in this way any existing ripples in the strip edges are made level, so that a simple, conventional straight welding of the profile or tube is possible.

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