Sms Demag Ag

Other

Ulrich Skoda-Dopp

Harald Wehage

Michael Breuer

Joachim Hafer

Wilfried Modrow

Horst Jacobi

Wolfgang Grimm

Peter Lixfeld

Alexander Borowikow

Holger Blei

The invention relates to a production method for producing, on a production installation (), flat products, also of a large width, from continuously cast slabs having a large or medium thickness or from thin slabs. Said production installation is comprised of a single or multiple stand blooming train (), of a roller table (), which is provided for conveying the rolling stock and, optionally for oscillating, of a roller table section () with hinged heat-insulating covering hoods. The production installation is also comprised of a straightening unit () for straightening the pre-strips, of an, in particular, inductive heating installation () for effecting the controlled heating of the pre-strips to a defined temperature over the length and width of the pre-strips, of a multiple-stand finishing train (), of a delivery roller table with devices () for cooling the hot rolled strip, and of subsequently arranged coiling machines () for coiling the finished strip. In the single or two-stand blooming train (), one or more slabs comprised of carbon steels having an average carbon content of approximately 0.2 to 0.8% or of alloyed case hardening steels or heat-treatable steels are rolled on the roller table () to form one or more pre-strips. Said rolling is carried out in two stages with a pause between the same for effecting an intermediate cooling by oscillation. The pre-strips are heated over the length and width thereof to a defined temperature by the combined action of the covering hoods and heating installation, and are rolled in a multiple-stand finishing train () in the two-phase region in order to form thin high-strength finished strips.

Production method and installation for producing thin flat products

The invention relates to a method for increasing the process stability, particularly the absolute thickness precision and the installation safety during the hot rolling of steel of nonferrous materials, with small degrees of deformation (f) or no reductions while taking the high-temperature limit of elasticity (R) into account when calculating the set rolling force (F) and the respective setting position (s). The process stability can be increased with regard to the precision of the yield stress (k) and the set rolling force (F) at small degrees of deformation (f) or small reductions, during which the high temperature limit of elasticity (R) is determined according to the deformation temperature (T) and/or the deformation speed (phip) and is integrated into the function of the yield stress (k) for determining the set rolling force (F) via the relation (2) R=a+e.phip, in which: Rrepresents the high temperature; phip represents the deformation speed, and; a, b, c represent coefficients.

Method for increasing the process stability, particularly the absolute thickness precision and the installation safety during the hot rolling of steel or nonferrous materials

The invention relates to a device for producing a metallic product () by rolling, comprising: a first area () inside of which slabs are produced by primary shaping; a second area (), which is located downstream from the first area () in the direction of flow (F) of the material and inside of which at least one first rolling device () for rolling slabs is arranged; a third area (), which is located downstream from the second area () in the direction of flow (F) of the material and inside of which at least one second rolling device () for rolling slabs or the intermediate product produced therefrom is arranged, and; a fourth area (), which is located downstream from the third area () in the direction of flow (F) of the material and inside of which at least one aftertreating device () for the rolled material is arranged. In order to increase the economic efficiency of the device, this device is characterized by (having a conveying device () with which the metallic product () can be removed between the second area () and the third area (), conveyed and can be fed to the processing process once again between the third area () and the fourth area ().

Apparatus for manufacturing metal material by rolling

A method and an installation for the endless production of hot-rolled, flat products from thin cast strip. The installation includes a casting machine for producing cast strip, a device for cooling the cast strip under inert gas, a single-stand roughing train, a multi-stand finishing train, a device for cooling, heating or maintaining the temperature of the hot-rolled strip, according to choice, between the roughing train and the finishing train, shears for separating the hot-rolled strip from coil to coil, a delivery roller table with devices for cooling the hot-rolled strip and with coiling machines arranged downstream of the finishing train for coiling up the finished strip.

Method and installation for the continuous production of hot-rolled, thin flat products

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Duisburg, Germany

Ulrich Skoda-Dopp