Metal fusion bonding – Process – With shaping
Patent
1979-07-26
1981-05-19
Weidenfeld, Gil
Metal fusion bonding
Process
With shaping
72177, 72181, 72196, 52180, 52377, B21D 508, E04F 1506
Patent
active
042679540
ABSTRACT:
A steel floor construction for freight hauling vehicles includes a plurality of elongated floor planking members arranged in side-by-side relation to provide a load bearing floor with a nailing groove between adjacent planking members. Each plank includes a downwardly open channel member having a relatively wide central web supported along its edges by integrally formed downwardly extending flanges, with the web being reinforced along its length by an upwardly directed generally U-shaped member welded to its bottom surface and having a pattern of anti-skid projections die-formed on and project upwardly from its top surface. The channels are progressively roll formed from a continuous length of strip steel by passing the strip through a series of forming roll pairs. A pair of die rolls are employed between two adjacent sets of forming rolls, with the die rolls being driven together and cooperating to form the anti-skid projections by a cold forming process after the sheet has been partially formed into this channel shape by passing through a plurality of the sets of forming rolls. The U-shaped reinforcing member is welded to the strip after the anti-skid projections are formed.
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National Steel Corporation
Ramsey K. J.
Weidenfeld Gil
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