Global Patent Index - EP 1050355 A2

EP 1050355 A2 2000-11-08 - Process for the production of continuously cast steel products

Title (en)

Process for the production of continuously cast steel products

Title (de)

Verfahren zum Herstellen von stranggegossenen Stahlerzeugnissen

Title (fr)

Procédé pour la production d'un produit en acier coulé en continu

Publication

EP 1050355 A2 (DE)

Application

EP 00108747 A

Priority

DE 19921296 A

Abstract (en)

The continuous casting operation uses a soft reduction action on the molten core of the cast material. The shaping section u only a pair of rollers (23) with the pull forces (Z) on the cast material as the control value. The comparison between nominal a actual values is used to set the ratio between the position of the paired rollers (23) and the peak (S) of the soft zone, so tha the cast strand is hardened throughout directly in the roller gap between the two rollers (24,25).

Abstract (de)

Um beim kontinuierlichen Stranggießen ein Gießerzeugnis mit homogenen Eigenschaften über dem Strangquerschnitt bei Erhöhung der Kernverdichtung auch bei hohen Gießgeschwindigkeiten zu erreichen, wird bei einem Verfahren, das einen Verformungsschritt des flüssigen Kerns (softreduction) des Gießerzeugnisses aufweist, vorgeschlagen, den Verformungsschritt nur mittels eines Rollenpaares (23) durchzuführen und als Regelgröße die Strangauszugskraft (Z) zu verwenden, wobei in Abhängigkeit eines Soll- und Istwertvergleichs das Verhältnis zwischen der Position des Rollenpaares und der Sumpfspitze (S) derart geregelt wird, daß die Durcherstarrung des Stranges stets und unmittelbar im Rollenspalt der beiden Rollen (24, 25) stattfindet. <IMAGE>

IPC 1-7 (main, further and additional classification)

B22D 11/20

IPC 8 full level (invention and additional information)

B22D 11/128 (2006.01); B22D 11/12 (2006.01); B22D 11/16 (2006.01); B22D 11/20 (2006.01)

CPC (invention and additional information)

B22D 11/1206 (2013.01); B22D 11/1282 (2013.01); B21B 1/463 (2013.01); B21B 2201/14 (2013.01)

Designated contracting state (EPC)

AT CH DE IT LI

EPO simple patent family

EP 1050355 A2 20001108; EP 1050355 A3 20010328; EP 1050355 B1 20060111; AT 315449 T 20060215; BR 0002396 A 20010102; CA 2307817 A1 20001107; CN 1188234 C 20050209; CN 1273148 A 20001115; DE 19921296 A1 20001109; DE 50012037 D1 20060406; JP 2000326060 A 20001128; MX PA00004353 A 20020312

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2005-07-27 [RTI1] TITLE (CORRECTION)

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