ISSN:
1662-8985
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
A comprehensive mathematical model has been developed to describe the interaction ofthe multiple physics fields during the conventional DC casting and LFEC (low frequencyelectromagnetic casting) process. The model is based on a combination of the commercial finiteelement package ANSYS and the commercial finite volume package FLUENT, with the former forthe calculation of the electromagnetic field and the latter for the calculation of the magnetic drivenfluid flow, heat transfer and solidification. Moreover, the model has been verified against thetemperature measurements obtained from two 7XXX aluminum alloy billets of 200mm diameter,cast during the conventional DC casting and the LFEC casting processes. In addition, ameasurement of the sump shape of the billets were carried out by using addition melting metal ofAl-30%Cu alloy into the billets during casting process. There was a good agreement between thecalculated results and the measured results. Further, comparison of the calculated results during theLFEC process with that during the conventional DC casting process indicated that velocity patterns,temperature profiles and the sump depth are strongly modified by the application of a lowfrequency electromagnetic field during the DC casting
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.15-17.18.pdf
