Process for producing a rolled section having a corrugated part and installation intended for this purpose
First Claim
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1. A process for making a longitudinally extending rolled section comprising:
- (a) rolling a blank to near finished dimensions;
(b) passing the blank between a first pair of opposed rolls to elongate the blank, at least on of said rolls having a non-uniform diameter with a larger diameter over a portion of its length so that additional relative elongation is imparted to a portion of the blank to form corrugations on the blank; and
(c) shaping the rolled section by uniformly and repeatedly folding the corrugations;
said rolled section exhibiting particular resistance to bending and buckling.
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Accused Products
Abstract
To produce an I-section (1) rolled in one piece, of which part (9) of the web (3) is corrugated, the section is passed between two rolls having an increased diameter over a portion of length, and it is subsequently passed between two rollers having a structured surface, so as to carry out a continuous uniform folding.
21 Citations
13 Claims
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1. A process for making a longitudinally extending rolled section comprising:
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(a) rolling a blank to near finished dimensions; (b) passing the blank between a first pair of opposed rolls to elongate the blank, at least on of said rolls having a non-uniform diameter with a larger diameter over a portion of its length so that additional relative elongation is imparted to a portion of the blank to form corrugations on the blank; and (c) shaping the rolled section by uniformly and repeatedly folding the corrugations; said rolled section exhibiting particular resistance to bending and buckling. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11)
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7. An apparatus for making a longitudinally extending rolled section, comprising:
a first pair of rolls arranged perpendicular to the longitudinal direction, at least one of said rolls having a non-uniform diameter with a larger diameter over a portion of its length to form corrugations on a blank passed between the rolls, and means for shaping the rolled section by folding the corrugations. - View Dependent Claims (12, 13)
Specification