Muhr Und Bender Kg

Bayerische Motoren Werke Aktiengesellschaft

Benteler-Automobiltechnik Gmbh

Andreas Hauger

Ludger Gehringhoff

Reiner Kopp

Christoph Wiedner

Stefan Pohl

Mark Riess

Peter B&ouml;hlke

Alexander Ebert

Rainer Kopp

Johannes Schäfers

A process of producing profiles whose cross-section is variable in the longitudinal direction, characterized by the process stages of cutting a blankwith a substantially constant width along a longitudinal direction, deforming the blankby deep-drawing to form an open profile whose cross-section is variable along the longitudinal direction, and cutting the flanges projecting from the open profile.

Process of producing profiles whose cross-section is variable in the longitudinal direction

The invention relates to a process for the continuous heat treatment of steel strip material whose thickness d, dperiodically varies along its length, more particularly of strip flexibly rolled with a roll gap varying as a function of time, wherein the continuous heat treatment of the strip material takes place while the strip material passes through an induction furnace in which the strip material is induction heated at a constant frequency which can be selected to be such that the mathematical induction depth &#x3b4; of the induced current up to which the magnetic field has been reduced to 63% of the field strength of the outer field is greater than half the thickness of the strip portions with the smallest thickness d.

Heat treatment of flexibly rolled strip

A process of producing profiles whose cross-section is variable in the longitudinal direction, characterised by the process stages of cutting a blankwith a substantially constant width along a longitudinal direction, deforming the blankby deep-drawing to form an open profile whose cross-section is variable along the longitudinal direction, and cutting the flanges projecting from the open profile.

A metal strip rolling system (), having a first reeling device () for reeling-off strip (), a rolling stand () having at least two working rolls () between which there is formed a roll gap () whose width is controllable, and a second reeling device () used for reeling-on strip () with a reduced strip thickness. A first strip storage assembly () having a plurality of rolls is positioned between the first reeling device () and the rolling stand (), and a second strip storage assembly () having a plurality of rolls is positioned between the rolling stand () and the second reeling device (). At least one of the strip storage assemblies () is formed of a double roll assembly with strip being wrapped around two rolls () in an S-like way, the rolls () being arranged at different levels.

Rolling process and rolling system for rolling metal strip

The invention relates to a method for manufacturing tubes and profiles with variable wall thickness over the length. The method comprises the steps of flexible rolling of continuous material strip with variable thickness in the longitudinal direction of the strip material to a final wall thickness which is continuously reduced with respect to the original wall thickness, reshaping the material strip to form a continuous tube or profile and cutting to length individual tube or profile pieces from the continuous tube or profile.

Method for manufacturing tubes and profiles

A method and a device for flexibly rolling a metal band by guiding the metal band through a roll gap formed between a first working roll and a second working roll, and by varying the size of the roll gap in such a way that band sections with a greater band thickness and band sections with a lesser band thickness are obtained over the length of the metal band. In the device and method, the time of contact between each point on the circumference of the first working roll and the metal band is shorter in duration than the time of contact between each point on the circumference of the second working roll and the metal band such that an asymmetric band thickness profile is obtained in a region of the band sections with a lesser band thickness.

Method and device for flexibly rolling a metal band

A device for forming components from billets having a thickness profile which is essentially symmetric to the central plane of the billet, i.e., the billet contains a thickness transition on both sides, and wherein the thickness transitions on both sided of the billet are transferred to one side of the formed such that the side of the formed component is planar. The forming surface of the forming device which faces the side of the billet that has a thickness transition in the formed state of the billet has a shape is adapted to the thickness transition to be realized, and the forming surface of the forming device which faces the side of the billet that becomes planar in the formed state is planar. Due to these measures, it is possible to transfer the thickness transition that originally existed on both sides of the billet to one side of the billet in only one step.

Method and device for forming components from billets of a flexibly rolled metal band

A method for the flexible rolling of a metallic strip in which, during the rolling procedure, the metallic strip is lead through a roll gap which is formed between two working rolls, and during the rolling operation, the roll gap is deliberately changed in order to obtain different strip thicknesses over the length of the metallic strip. A good planeness of the metallic strip can be obtained, and particularly, also for relatively wide strips, in that, during each setting of the roll gap or directly afterward, the deflection curve bending line of the working roll is controlled depending on the setting of the roll gap for the achievement of planeness of the metallic strip.

Growing community of inventors

Attendorn, Germany

Andreas Hauger