Thermal Property Database for Investment Casting Shells

Abstract

Reliable and realistic thermal properties data for investment casting shell molds are required to correctly simulate the solidification and predict the shrinkage. Investment casting shells exhibit several phase transformations during firing and pouring which affect their transient thermal properties. These properties are dependent upon time, temperature and process history. This study presents the thermal properties (thermal conductivity and specific heat capacity) of seven industrially produced ceramic molds using an inverse method in which pure Ni was poured into ceramic molds equipped with two thermocouples (inside the mold cavity and in the shell). MAGMASOFT ®software (hereafter known as Software A) was used to simulate virtual cooling curves which were fitted to experimental curves by adjusting the temperature dependent thermal properties of the ceramic mold. The thermal properties data obtained from the inverse method were compared with measurement results from laser flash and the differences were discussed. The dataset thus developed will serve to improve the accuracy of investment casting simulation.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Database; Inverse method; Investment casting; Laser flash; Thermal property

International Standard Serial Number (ISSN)

1939-5981

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Springer, All rights reserved.

Publication Date

01 Jul 2016

Link to Full Text

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