A simulation program for the calculation of forming processes in a bar and wire mill is introduced. The description of the process chain starts with re-heating, runs through different forming steps, finishing with cooling down to room temperature. Besides temperature and forming conditions the microstructure development of austenite is calculated with local resolution. The analysis of the phase transformation delivers the phase fractions and their properties, which allows a prediction of the mechanical properties of the product. The program is based on modules, therefore it can reflect any mill configuration. The efficiency of the program is demonstrated on two steel grades, its variability is confirmed by the use of different cooling strategies.
For the near-net-shape casting of thin steel strips a liquid steel feeding system is developed. This article at first describes the development of a water model for the complete casting machine (cold tests). In this model the control concept for the low-pressure tundish is designed and tested. As a subsequent stage to the water model trials, the functional ability of the casting machine concepts, and particularly to the tundish concepts, is verified in separately conducted tundish tests and also in strip casting trials (hot tests).Anwendbarkeit eines isokinetischen Stahlschmelzenaufgabesystems zum endabmessungsnahen GieBen dOnner Bander. Zum endabmessungsnahen GieBen von dOnnen Stahlbandern ist ein Schmelzenaufgabesystem entwickelt worden. 1m folgenden wird zunacnst Oberdie Entwicklung eines Wassermodells fOr die gesamte GieBmaschine berichtet, in dem das Regelkonzept fOr das Unterdruckverteilersystem entworfen und erprobt worden ist. Aufbauend auf den Wassermodellversuchen ist dann die FunktionstOchtigkeit des GieBmaschinenund speziell Verteilerkonzeptes sowohl in zunachst separat durchgefOhrten Verteilerversuchen als auch in ersten BandgieBversuchen nachgewiesen worden.
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