EXPERIMENTAL INVESTIGATION OF THERMOMECHANICAL EFFECTS DURING DIRECT CHILL AND ELECTROMAGNETIC CASTING OF ALUMINUM-ALLOYS

被引：41
|
作者：
DREZET, JM [1 ]
RAPPAZ, M [1 ]
CARRUPT, B [1 ]
PLATA, M [1 ]
机构：
[1] ALUSUISSE LONZA CO, CH-3965 CHIPPIS, SWITZERLAND
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 1995年 / 26卷 / 04期
关键词：
D O I：
10.1007/BF02651729
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The deformation and the temperature field within direct chill (DC) and electromagnetic (EM) cast aluminum ingots have been measured in situ using a simple experimental setup. The deformation of the cross section of the cold ingots has also been characterized as a function of the casting speed, alloy composition, and inoculation condition. The pull-in of the lateral rolling faces has been found to occur in two sequences for DC cast ingots, whereas that associated with electromagnetic casting (EMC) was continuous. The pull-in was maximum at the center of these faces (about 7 to 9 pet) and strongly depended upon the casting speed. Near the short sides of the ingots, the deformation was only about 2 pct and was nearly independent of the casting parameters and alloy composition. Based upon these measurements, it was concluded that the pull-in of the rolling faces was mainly due to the bending of the ingots induced by the thermal stresses. This conclusion was further supported by a simple two-dimensional thermoelastic model.
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页码：821 / 829
页数：9
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