Light weight metal framing member

Details Light weight metal framing member Light weight metal framing member

E - Fixed Constructions

04

C

E04C 3/07 (2006.01) B21D 13/04 (2006.01) B21D 47/00 (2006.01) E04C 3/06 (2006.01) E04C 3/09 (2006.01)

Patent

CA 2568111

The present invention provides for a lightweight metal framing member having a plurality of depressions and a plurality of reinforcing ribs on the surface thereof, the depressions and ribs both being inwardly oriented and cooperating to aid in stiffening of the metal stud. The present invention also provides a method of manufacturing a metal framing member having a plurality of depressions and a plurality of reinforcing ribs on the surface thereof, the depressions and ribs both being inwardly oriented and cooperating to aid in stiffening of the metal stud. The method utilizes a cold roll forming apparatus having a first roller with a plurality of projections on its surface and a second roller having a surface provided with holes aligned with the projections on the surface of the first roller to form the depressions in the surface of the material having clearly defined edges generally aligned with the plane of the metal sheet. A second roll forming apparatus is used having a first roller with projections on its surface to form the reinforcing ribs in the surface of the sheet material and a second roller to allow for a softer transition between the surface of the sheet material and the edges of the reinforcing ribs and so as not to unduly deform the depressions formed in the first roll forming step. A third roll forming apparatus is used having rollers to form the metal stud or track.

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