Experimental study of the continuous casting of a binary solution

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:462600

DeZego, S; Jones, K Jr; Burton, R; Yang, G; Dong, Z; Ebadian, M A ^[1]

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1. Florida International Univ., Miami, FL (United States). Dept. of Mechanical Engineering

Continuous casting is currently the primary method for producing sheet metal, plastic and other materials. Here, a laboratory scale test facility has been designed to simulate solidification by using binary solutions (NH{sub 4}Cl-H{sub 2}O). The solid/liquid front evolution and the temperature distributions were recorded during the tests. Solidification for 10% and 30% NH{sub 4}Cl-H{sub 2}O solutions were conducted. The results showed totally different behavior of the solidification process between the two solutions. After reaching steady state, the hypoeutectic solution illustrated thick columnar dendrites in the mushy zone, with U-shaped temperature contours. It indicated that the warm fluid that was added penetrated deep along the centerline. On the other hand, the hypereutectic solution produced a wide open liquid pool, with short dendrites on the side walls. There existed a deep loose mushy zone at the bottom of the liquid pool, which was formed by the settling of equiaxed dendrites. Temperature gradients along the center line were observed for the hypereutectic solution due to the existence of stratified layers in the liquid pool.

• Sponsoring Organization: National Science Foundation, Washington, DC (United States)
• OSTI ID: 462600
• Report Number(s): CONF-950828--; ISBN 0-7918-1705-9
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BINARY MIXTURES
CASTING
EXPERIMENTAL DATA
MATERIALS
SIMULATION
SOLIDIFICATION
TEMPERATURE DISTRIBUTION
TEST FACILITIES