The effect of the interface pressure on the metal-chill Heat Transfer Coefficient (HTC) during the cooling of a A356 aluminum alloy in a gravity sand casting process is analyzed. HTCs are evaluated by inverse analysis in different processing conditions, by varying both chill material (copper, aluminum and cast iron) and size (30, 60 and 90 mm depth). All the experimental conditions are reconstructed by numerical analysis with the aim of evaluating the increase of contact pressure between casting and chill before the formation of an air gap. The experimental heat flow as determined in each experiment was used as a boundary condition for the calculations. The evaluated interface pressures were put in relation to the particular HTC evolution in the different experiments in order to point out correlations.

Relation between HTC evolution, gap formation and stress analysis at the chill interface in aluminium sand casting / L. Tomesani; G. Sangiorgi Cellini; A. Meneghini;. - STAMPA. - (2007), pp. 271-278. (Intervento presentato al convegno TMS Annual Meeting (TMS 2007) tenutosi a Orlando, US nel 25 February - 1 March).

Relation between HTC evolution, gap formation and stress analysis at the chill interface in aluminium sand casting

TOMESANI, LUCA;SANGIORGI CELLINI, GIOVANNI;MENEGHINI, ANDREA
2007

Abstract

The effect of the interface pressure on the metal-chill Heat Transfer Coefficient (HTC) during the cooling of a A356 aluminum alloy in a gravity sand casting process is analyzed. HTCs are evaluated by inverse analysis in different processing conditions, by varying both chill material (copper, aluminum and cast iron) and size (30, 60 and 90 mm depth). All the experimental conditions are reconstructed by numerical analysis with the aim of evaluating the increase of contact pressure between casting and chill before the formation of an air gap. The experimental heat flow as determined in each experiment was used as a boundary condition for the calculations. The evaluated interface pressures were put in relation to the particular HTC evolution in the different experiments in order to point out correlations.
2007
Acts 136th TMS Annual Meeting (TMS 2007)
271
278
Relation between HTC evolution, gap formation and stress analysis at the chill interface in aluminium sand casting / L. Tomesani; G. Sangiorgi Cellini; A. Meneghini;. - STAMPA. - (2007), pp. 271-278. (Intervento presentato al convegno TMS Annual Meeting (TMS 2007) tenutosi a Orlando, US nel 25 February - 1 March).
L. Tomesani; G. Sangiorgi Cellini; A. Meneghini;
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/53983
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact