Heat transfer at the mold/metal interface in permanent mold casting
- Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
Heat transfer between a solidifying casting and the mold is critical for achievement of high quality in the cast product. This is especially important in permanent mold casting where the rate limiting steps for heat transfer between the casting and the mold are primarily controlled by conditions at the mold-metal interface. The mold-metal interface is emphasized, since as the casting solidifies, it tends to shrink which creates areas where gaps form between the casting and the mold surface. Quantification of these conditions is key to modeling of permanent mold casting solidification. The focus of this paper is directed to methods for determination of metal/mold heat transfer. A description of the application of the Inverse Heat Conduction Problem to determine the interfacial heat transfer coefficients from temperature histories at interior points is presented. This approach is supported by conditions which allow use of quasi steady-state approximations for determination of time-dependent heat transfer coefficients. The use of heat transfer coefficient analyses for permanent mold casting are describes and the limitations defined. The need for further effort in this area is presented, and areas for future work are defined.
- OSTI ID:
- 227761
- Report Number(s):
- CONF-9509118--; ISBN 0-87339-297-3
- Country of Publication:
- United States
- Language:
- English
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