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ASM Handbook

Cast Iron Science and Technology

Edited by
Doru M. Stefanescu
Doru M. Stefanescu
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ASM International
Volume
1A
ISBN electronic:
978-1-62708-179-5
Publication date:
2017
Book Chapter

Cast Iron Melt Quality Control

Published:
2017
Page range:
146 - 159
Publication history
August 28, 2017

Abstract

This article describes different methods by which the composition of cast iron can be analyzed. It provides particular emphasis on the methods for evaluating the graphitization potential of a melt with prescribed limits on carbon, silicon, and alloying elements. The article discusses the effect of cooling rate on the graphitization of a given composition by chill and wedge tests. Thermal analysis of cooling curves gives excellent information about the solidification and subsequent cooling of cast iron alloys. The article presents some applications of the cooling curve analysis and explains the evaluation of carbon-silicon contents, graphite shape, graphite nucleation, and contraction-expansion balance. It illustrates the use of an immersion steel sampling device for compacted graphite iron production and provides information on the ferrite-pearlite ratio in ductile iron.

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2017. "Cast Iron Melt Quality Control", Cast Iron Science and Technology, Doru M. Stefanescu

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