Publication detail
Two Models for Achieving Good Mechanical Properties Of a Casting of Ductile Cast-Iron
KAVIČKA, F. STRÁNSKÝ, K. DOBROVSKÁ, J. SEKANINA, B. ŠTĚTINA, J.
Czech title
Dva modely k zajištění dobrých mechanických vlastností odlitků z tvárné litiny
English title
Two Models for Achieving Good Mechanical Properties Of a Casting of Ductile Cast-Iron
Type
journal article - other
Language
en
Original abstract
An original application of ANSYS simulated the forming of the temperature field of a massive casting during the application various methods of its cooling. The numerical model managed to optimize more than one method of cooling but, in addition to that, provided serious results for the successive model of structural and chemical heterogeneity, and so it also contributes to influencing the pouring structure. The file containing the acquired results from both models, as well as from their organic unification, brings new and, simultaneously, remarkable findings of causal relationships between the structural and chemical heterogeneity (i.e. between the sizes of the spheroids of graphite, the cells, density of the spheroids of graphite, etc.) and the local solidification time in any point of the casting. The determined relations therefore enable the prediction of the face density of the spheroids of graphite in dependence on the local solidification time.
Czech abstract
Originální aplikace ANSYS simuluje tvorbu teplotního pole masivního odlitku při aplikaci různých metod jeho chlazení. Numerický model umožnil nejen výběr optimální metody chlazení, ale poskytl i výsledky pro model strukturální a chemické heterogenity a tak přispěl k ovlivnění licí struktury. Je prokázána příčinná souvislost mezi strukturální a chemickou heterogenitou a lokální dobou tuhnutí v libovolném místě odlitku.
English abstract
An original application of ANSYS simulated the forming of the temperature field of a massive casting during the application various methods of its cooling. The numerical model managed to optimize more than one method of cooling but, in addition to that, provided serious results for the successive model of structural and chemical heterogeneity, and so it also contributes to influencing the pouring structure. The file containing the acquired results from both models, as well as from their organic unification, brings new and, simultaneously, remarkable findings of causal relationships between the structural and chemical heterogeneity (i.e. between the sizes of the spheroids of graphite, the cells, density of the spheroids of graphite, etc.) and the local solidification time in any point of the casting. The determined relations therefore enable the prediction of the face density of the spheroids of graphite in dependence on the local solidification time.
Keywords in Czech
teplotní pole, chemická heterogenita, strukturální charakteristika, matematické modelování
Keywords in English
temperature field, chemical heterogeneity, structural characteristic, mathematical modelling
RIV year
2010
Released
30.04.2010
Publisher
Hutnická fakulta TU Košice
Location
Košice
ISSN
1338-1660
Journal
Acta metalurgica slovaca
Volume
2010
Number
1
Pages from–to
129–132
Pages count
4
BIBTEX
@article{BUT49251,
author="František {Kavička} and Karel {Stránský} and Jana {Dobrovská} and Bohumil {Sekanina} and Josef {Štětina},
title="Two Models for Achieving Good Mechanical Properties Of a Casting of Ductile Cast-Iron",
journal="Acta metalurgica slovaca",
year="2010",
volume="2010",
number="1",
month="April",
pages="129--132",
publisher="Hutnická fakulta TU Košice",
address="Košice",
issn="1338-1660"
}