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ASM Handbook

Aluminum Science and Technology

Edited by
Kevin Anderson, FASM
Kevin Anderson, FASM
Mercury Marine
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John Weritz
John Weritz
Aluminum Association
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J. Gilbert Kaufman, FASM
J. Gilbert Kaufman, FASM
Kaufman Associates
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ASM International
Volume
2A
ISBN electronic:
978-1-62708-207-5
Publication date:
2018
Book Chapter

Lost Foam Casting[1]

By
Kevin Anderson
Kevin Anderson
Mercury Marine
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Published:
2018
Page range:
232 - 241
Publication history
November 22, 2018

Abstract

Lost foam casting is a sand casting process that uses an expandable polystyrene (EPS) pattern that embodies the positive shape of the part to be cast. Lost foam casting is especially suitable for fairly complex castings with many internal passages. This article discusses the advantages and the process technique of lost foam casting. It describes the pattern molding for the lost foam process that is grouped into four major functions: filling, fusion, cooling (stabilization), and ejection. The article provides information on the application of the pattern coating. It concludes with a review of the quality of the lost foam casting in terms of dimensional tolerances, fold defects, and porosity.

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Kevin Anderson, 2018. "Lost Foam Casting", Aluminum Science and Technology, Kevin Anderson, FASM, John Weritz, J. Gilbert Kaufman, FASM

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