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ASM Handbook

Casting

Edited by
Srinath Viswanathan
Srinath Viswanathan
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Diran Apelian
Diran Apelian
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Raymond J. Donahue
Raymond J. Donahue
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Babu DasGupta
Babu DasGupta
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Michael Gywn
Michael Gywn
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John L. Jorstad
John L. Jorstad
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Raymond W. Monroe
Raymond W. Monroe
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Mahi Sahoo
Mahi Sahoo
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Thomas E. Prucha
Thomas E. Prucha
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Daniel Twarog
Daniel Twarog
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ASM International
Volume
15
ISBN electronic:
978-1-62708-187-0
Publication date:
2008
Book Chapter

Introduction: Expendable Mold Processes with Expendable Patterns

By
Brian V. Smith
Brian V. Smith
General Motors
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Published:
2008
Page range:
637 - 639
Publication history
June 02, 2008

Abstract

Depending on the size and application, castings manufactured with the expendable mold process and with expendable patterns increase the tolerance from 1.5 to 3.5 times that of the permanent pattern methods. This article reviews the two major expendable pattern methods, such as lost foam and investment casting. It discusses Replicast casting process involving patternmaking with polystyrene and a ceramic shell mold. The article contains a table that summarizes the differences in the steps of casting a part between the permanent pattern and the expendable pattern methods.

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Brian V. Smith, 2008. "Introduction: Expendable Mold Processes with Expendable Patterns", Casting, Srinath Viswanathan, Diran Apelian, Raymond J. Donahue, Babu DasGupta, Michael Gywn, John L. Jorstad, Raymond W. Monroe, Mahi Sahoo, Thomas E. Prucha, Daniel Twarog

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