Full Content is available to subscribers

Subscribe/Learn More  >

A Numerical Model of Solidification of a Massive Casting From Malleable Cast-Iron

[+] Author Affiliations
Frantisek Kavicka, Josef Stetina, Karel Stransky, Bohumil Sekanina

Technical University of Brno, Brno, Czech Republic

Jana Dobrovska

VSB – Technical University of Ostrava, Ostrava, Czech Republic

Jaromir Heger

Alstom Power Technology, Whetstone, Leicester, UK

Paper No. HT-FED2004-56043, pp. 851-856; 6 pages
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 3
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4692-X | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME


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).

Copyright © 2004 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In