Sheet-metal elements made of flexibly rolled material strip

US20050014015A1Inactive Publication Date: 2005-01-20MUHR UND BENNDER KG +1

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[0008] Insofar as flexibly rolled material strip is discussed here, this includes both the possibility of reshaping the material strip, which has not been divided, after rolling to form sheet-metal elements and then cutting to length. Also the material strip may be cut to length after the flexible rolling and then reshaped to form sheet-metal elements. And finally, the material strip may be cut to length before the flexible rolling, and then reshaping flexibly rolled blanks to form sheet-metal elements.

[0009] The sheet-metal elements described hereinafter preferably comprise sheet-metal elements manufactured of cold-rolled material strip.

[0010] A first solution according to the invention consists in a sheet-metal element reshaped about the longitudinal direction of the strip from a flexibly rolled material strip having different thicknesses in the longitudinal direction of the strip to form a tube or profile body having an out-of-round cross-section and variable wall thickness ove...

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Abstract

The invention relates to sheet-metal elements made of flexibly rolled material strip having different thicknesses in the longitudinal direction of the strip. A solution according to the invention consists in a sheet-metal element reshaped about the longitudinal direction of the strip or reshaped transverse to the longitudinal direction of the strip from a flexibly rolled material strip having different thicknesses in the longitudinal direction of the strip to form a tube or profile body having an out-of-round cross-section and variable wall thickness over the length or over the circumference.

Description

[0001] The invention relates to sheet-metal elements made of flexibly rolled material strip having different thicknesses in the longitudinal direction of the strip. BACKGROUND OF THE INVENTION [0002] Flexibly rolled material strip is produced by rolling starting material having an initially constant thickness with variable roller gap thickness. Such rolling methods to produce flexibly rolled material strip and reshaping methods to produce sheet-metal elements therefrom are known from the prior art. [0003] DE-PS 104 875 describes how a strip-shaped or flat piece of sheet-metal is brought to different wall thicknesses by rolling out, and from the piece of sheet-metal having variable wall thicknesses thus obtained, a tube having different wall thickness in the longitudinal direction is bent round and soldered along the slit. [0004] From EP 0 788 849 A1 it is known to first roll a metal sheet such that parallel indentations are formed transverse to the direction of rolling, wherein the ...

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Application Information

Patent Timeline

20 Jan 2005

Publication

US20050014015A1

IPC: B21C37/02; B21C37/15; B21C37/16; B21D51/16; B21D53/88; B62D21/15; B62D29/00; B62D65/00

CPC: B21C37/02; B21C37/15; Y10T428/12389; B62D29/00; B62D65/00; B62D21/157

Inventors: HAUGER, ANDREAS