A numerical model of the temperature field associated with solidifying castings aims to achieve two general goals: directed solidification (as the primary condition for a healthy casting), and optimisation of the technology of casting together with the preservation of optimum utility properties of the product. A specific goal of this model is the selection and optimisation of the method of cooling to shorten the solidification time to obtain a spherical graphite structure with good nodular properties, and with a sufficient density of graphite spheres (cells). The speed of cooling during solidification and cooling in the mould is therefore a significant quantity influencing the formation of the structure. The achievement of these goals depends on the ability to analyse and, successively, to control the effect of the main factors which characterise the solidification process or accompany it. The analysis of the quantities is focused on determining the causes of the formation of the heterogenic temperature field during casting, considering the phase and structural changes. It is also focused on the thermokinetics of the formation of shrinkage porosities and cavities and on the prediction of their formation. This leads to the optimisation of the shape and sizes of the risers, the method of insulation, the treatment of the level. The model is applicable to various shapes of castings. The software is capable of analysing the temperature field of the actual casting, as well as the temperature field of the mould and cores, including the dependence of their material. It is also capable of considering non-linearity, i.e. the dependence of the thermophysical properties—namely the material of the casting and mould on the temperature, as well as the dependence of the heat transfer coefficients on the surface and interface temperature. The model is also equipped with an original network generator (pre-processing) as well as graphical output (post-processing).
Skip Nav Destination
ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
July 11–15, 2004
Charlotte, North Carolina, USA
Conference Sponsors:
- Heat Transfer Division and Fluids Engineering Division
ISBN:
0-7918-4692-X
PROCEEDINGS PAPER
A Numerical Model of Solidification of a Massive Casting From Malleable Cast-Iron
Frantisek Kavicka,
Frantisek Kavicka
Technical University of Brno, Brno, Czech Republic
Search for other works by this author on:
Josef Stetina,
Josef Stetina
Technical University of Brno, Brno, Czech Republic
Search for other works by this author on:
Karel Stransky,
Karel Stransky
Technical University of Brno, Brno, Czech Republic
Search for other works by this author on:
Jana Dobrovska,
Jana Dobrovska
VSB – Technical University of Ostrava, Ostrava, Czech Republic
Search for other works by this author on:
Bohumil Sekanina,
Bohumil Sekanina
Technical University of Brno, Brno, Czech Republic
Search for other works by this author on:
Jaromir Heger
Jaromir Heger
Alstom Power Technology, Whetstone, Leicester, UK
Search for other works by this author on:
Frantisek Kavicka
Technical University of Brno, Brno, Czech Republic
Josef Stetina
Technical University of Brno, Brno, Czech Republic
Karel Stransky
Technical University of Brno, Brno, Czech Republic
Jana Dobrovska
VSB – Technical University of Ostrava, Ostrava, Czech Republic
Bohumil Sekanina
Technical University of Brno, Brno, Czech Republic
Jaromir Heger
Alstom Power Technology, Whetstone, Leicester, UK
Paper No:
HT-FED2004-56043, pp. 851-856; 6 pages
Published Online:
February 24, 2009
Citation
Kavicka, F, Stetina, J, Stransky, K, Dobrovska, J, Sekanina, B, & Heger, J. "A Numerical Model of Solidification of a Massive Casting From Malleable Cast-Iron." Proceedings of the ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. Volume 3. Charlotte, North Carolina, USA. July 11–15, 2004. pp. 851-856. ASME. https://doi.org/10.1115/HT-FED2004-56043
Download citation file:
5
Views
Related Proceedings Papers
Related Articles
An Experimental and Numerical Investigation into the Thermal Behavior of the Pressure Die Casting Process
J. Manuf. Sci. Eng (February,2000)
Direct Chill Casting of Aluminum Alloys: Modeling and Experiments on Industrial Scale Ingots
J. Heat Transfer (October,2002)
On the Numerical Modeling of the Thermomechanical Contact for Metal Casting Analysis
J. Heat Transfer (June,2008)
Related Chapters
Solidification in a Casting Mold
Everyday Heat Transfer Problems: Sensitivities to Governing Variables
Numerical Study on Dynamic Charging Performance of Packed Bed Using Spherical Capsules Containing N-Tetradecane
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Solidification of Molten Surface Coating on a Semi-Infinite Solid Substrate
Case Studies in Transient Heat Transfer With Sensitivities to Governing Variables