The effect of graphite and insulating coatings on the solidification of aluminum and thermal cycling of a cast iron permanent mold

Author

John Ross Dillingham

Abstract

The coating applied to a cast iron permanent mold used for casting aluminum has a tremendous effect on the solidification of the aluminum and the thermal cycling experienced by the mold. The research in the following study was completed to gain a better understanding of the effect of the mold coatings.

The first part compares a mold coated with graphite to an uncoated mold. Metal solidification and mold thermal cycling characteristics were studied to compare and contrast the two. It is necessary to determine the effect of graphite in order to establish parameters utilized in computer modeling mold thermal cycles.

Lastly, an analysis of eight insulating coatings was performed. The impact of each type of coating on the metal solidification and mold thermal cycling was studied with respect to coating thickness, composition, and documented commercial properties. Evidence of an air gap was discovered when metal solidification curves were compared to mold temperature curves of the same time period.

Advisor(s)

Ramsay, Christopher W.
Askeland, Donald R.

Committee Member(s)

Carroll, Douglas R.
Nyamekye, Kofi

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Metallurgical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Spring 1996

Journal article titles appearing in thesis/dissertation

• The effect of graphite and insulating coatings on the solidification of aluminum and thermal cycling of a cast iron permanent mold
• Literature review for strong tenacious coatings for the aluminum permanent mold casting process

Pagination

xiii, 164 pages

Note about bibliography

Includes bibliographical references.

Rights

© 1996 John Ross Dillingham, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Thesis Number

T 7089

Print OCLC #

35321539

Recommended Citation

Dillingham, John Ross, "The effect of graphite and insulating coatings on the solidification of aluminum and thermal cycling of a cast iron permanent mold" (1996). Masters Theses. 1520.
https://scholarsmine.mst.edu/masters_theses/1520