Institut für Kunststoffverarbeitung
Contact: Dr.-Ing. Boris Rotter Head of department
RWTH Aachen
52056 Aachen
Aachen,
Germany
Phone: +49 241-80 93 819
Fax: +49 241-80 92 262
Simulation models for single and twin screws
Computer-aided simulation of flow processes constitutes a key aid in the layout of extruder screws. This gives access to data and information of relevance to the process which makes a key contribution towards an understanding of the process conditions but is difficult to come by, or indeed not available at all, in the run-up to development. Computeraided simulation also offers clear advantages when it comes to effective cost reduction.
Layout of single-screw extruders
The BILAN program has been developed at the IKV for the layout of screws over the course of the past few years. This incorporates sub-models for describing the feed, melting and homogenisation sections. The program calculates on a two-dimensional basis along a grid inside the screw channel. BILAN gets by with generally known parameters for describing the process. The calculation results obtained are the tem-perature profiles, pressure curve, dissipated energy, melting behaviour, the position and shape of the solids bed in the melting section, and flow parameters in the principal direction of conveyance and at right angles to this. The results are presented in graphic and tabular form and can be used in other windows applications.
Layout of twin-screw extruders
The MOREX program package is used to simulate what takes place in co-rotating twin-screw extruders during reactive and non-reactive extrusion. The optimum screw configurations and operating points can then be established in advance.
Software der Abteilung Extrusion und Weiterverarbeitung
Extrusionsanlagen bestehen aus unterschiedlichen Komponenten, deren Auslegung und sinnvolle Zusammenstellung detailliertes Prozesswissen erfordert. Die am IKV entwickelten problemspezifischen Computerprogramme stellen dazu eine wesentliche Arbeitserleichterung dar. Für folgende Anlagenteile bzw. Problemstellungen werden dem industriellen Anwender Lösungen angeboten:
MOREX
Auslegung von dichtkämmenden Gleichdralldoppelschneckenextrudern
MOTEX
Extruder- und Schneckenberechnung
GEPEX
Zahnradschmelzepumpensimulation
PROWEX
Rheologische Auslegung von Extrusionswerkzeugen
ERKON
Abkühlsimulation von Blasformteilen
HEIZEN
Simulation von Infrarot-Aufheiz- und Abkühlvorgängen auf Kühlwalzen
BILAN
Auslegung von Einschneckenextrudern
BLOW-AIX
Simulation des Blasfolienextrusionsprozesses
RHEOGRAF
Kapillarrheometerauswertung und Modellparameterbestimmung
SHEET COOL-AIX
Folien- und Plattenextrusion - Simulation der Abkühlung
Weitere Informationen erhalten Sie bei:
Dr.-Ing. Stefan Hoffmann
Abteilungsleiter
Tel. 0241-80 93 819
Fax 0241-80 92 262
E-Mail: hoffmann@ikv.rwth-aachen.de
