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Contribution to the Solidification and Graphitization Behavior of Sand-Cast and Gravitiy Die Cast Malleable Iron

Published online by Cambridge University Press:  21 February 2011

Reinhard Doepp
Reinhard Doepp*
Affiliation:
Institut für Eisenhüttenkunde und Gieß;ereiwesen, Techniscne Universität Clausthal, D-3392 Clausthal-Zellerfeld, West-Germany
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Abstract

Structure and properties of whitoheart malleable iron cast in gray iron permanent molds are examined. The results of test bars and industrial castings are compared to those of green sand molds. Malleable iron is predestined for casting in permanenet molds, because it must solidify completely white. Faster cooling achieved Dy the permanent mold refines primary austenite dendrites, promotes formation of ledeburite (metastable eutectic) and allows higher contents of graphitizing elements. Silicon content can be raised. The yield improves, annealing time decreases, combination of mechanical properties is improved. Combined metallurgical, technological and environmental advantages can improve economy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 34: Symposium – Physical Metallurgy of Cast Iron , 1984 , 435
Copyright
Copyright © Materials Research Society 1985

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References

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