The integrated single-belt casting/hot rolling process operated at Clausthal Technical University is described with emphasis on the machine operation. Automatic control of the relevant parameters is very important in strip casting with high linear velocities involving the additional process steps of hot rolling and coiling. The following quantities are measured, controlled and/or stored as process data by a computer system: (a) the temperatures of the liquid steel in the furnace/ladle and in the dispenser and of the strand at the entrance to the rolls, (b) the flow rate of the liquid steel discharged from the ladle into the dispenser, (c) the velocities of the belt, of the strand and of the rolled strip, (d) the roll gap, (e) the lateral position of the belt, and (f) the oxygen content of the gas in the strand encasing. The various controls are described and examples of the time records of the controlled quantities are given. The second part of the paper deals with the feeding system. At present two argon rakes made up from a row of little argon jets are used to enhance the lateral distribution of the melt on the belt. In the third part of the paper the materials properties of the product are discussed. It is shown that the internal porosity can be removed securely by hot rolling with a reduction degree of about one. Some results are given on the inclusion distribution in the as-cast material.KEY WORDS: near net shape casting; single-belt process; strip casting with in-line hot rolling. University.

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The size of local roll flattening and its distribution along the direction of the roll axis in flat rolling were calculated by means of 3‐dimensional finite element method. For analysis of elastic flattening deformation of the roll stack the well‐known classical and analytical solutions are usually employed which were derived from elastic half space theory or two dimensional contact theory. By comparison of results from both the different methods the validity of the classical formulae was examined. Some of the formulae are more appropriate for calculating local flattening along the work roll/strip interface, however, they may result in a great deviation in calculating the flattening along the work roll/ back‐up roll interface, especially for the back‐up roll. Using the Fe model the influence of roll geometry and strip width under a specific rolling force on the flattening was taken into account, which is difficult to be treated with classical models.

Local elastic roll flattening in direction of the roll axis in flat rolling is one of the important displacement components related to the roll gap shape. Up to now some classical formulae to solve roll flattening have been proposed. These formulae were derived from the elastic half space theory or the 2-dimensional contact theory. On calculating the flattening of the back-up roll they may result in a great deviation. In the present effort a comparison was made between the flattening results obtained by a 3-dimensional finite element method and by a classical formula. The relation between the deviation and the back-up roll geometry was also examined and therefore the classical formula was modified. Calculated results indicate that the modified formula can more accurately predict the back-up roll flattening.Modlflzlerung einer klassischen Formel fOr die Bestimmung der Walzenabplattung beim Flachwalzen. Die i:irtliche elastische Walzenabplattung Ober der Ballenbreite beim Flachwalzen ist eine wichtige Verformungsgri:iBe far die Bestimmung der Walzspaltform. Bisher wurden einige klassische Formeln fur die Li:isung der Abplattung benutzt, die von der Theorie des elastischen Halbraums bzw. von der Theorie des ebenen Kontakts abgeleitet wurden. Solche Formeln liefern jedoch groBe Abweichungen bei der Berechnung der Abplattung der StOtzwalze. Beim Vergleich der Abplattungen, die mit der drei-dimensionalen Finite-Elemente-Methode und mil einem klasslschen Modell ermittell wurden, konnte eine Beziehung zwischen den Abweichungen und der Walzengeomelrie fsststellt werden. Damit wurde die Formel angeglichen. Die Berechnungen zeigen, daB die Abplattungen der StOtzwalzen mit der modifizierten Formel genauer bestimmt werden ki:innen. formula [7] so that it can calculate the back-up roll flattening as accurately as possible.

Rechnerische Ansätze zum Ermitteln der Temperaturverteilung im Walzeninnern. Walzenoberflächentemperatur im Walzspalt und außerhalb des Walzspaltes. Berechnungsbeispiel.