Structural metal sheet and method for forming the same

Details Structural metal sheet and method for forming the same Structural metal sheet and method for forming the same

1983-08-05

1986-10-21

Larson, Lowell A.

Metal deforming

Process

Deforming sheet metal

72307, 72350, 52630, B21D 1702

Patent

active

046178180

ABSTRACT:
A structural metal sheet employed as an outer sheet for a railway vehicle, for example, is generally pretensioned in order to prevent buckling. Hitherto, the pretensioning is effected by various methods after or during the assembly of a structure. According to the invention, the metal sheet itself is pretensioned by a plastic working for increasing the flexural rigidity thereof. Thus, there is no fear of buckling, and the workmanship is improved as compared with the prior art.

REFERENCES:
patent: 2313111 (1943-03-01), Wilson
patent: 2330572 (1943-09-01), Frey et al.
patent: 2831521 (1958-04-01), Collins
patent: 2980046 (1961-04-01), McGregor et al.
patent: 3073021 (1963-01-01), Goodwill et al.
patent: 4211102 (1980-07-01), Hurvitz
patent: 4400965 (1983-08-01), Schey

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