Method for manufacturing gradient material by continuous and semi-continuous casting
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United States of America Patent
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Jul 18, 2000
Grant Date -
N/A
app pub date -
Apr 15, 1998
filing date -
Apr 15, 1997
priority date (Note) -
Expired
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Abstract
A gradient material is manufactured in which the alloy composition varies continuously with the cross-section. A first metal liquid is introduced from a first tundish into the outer portion of a water-cooled mould. A second metal liquid is introduced into the inner portion of the water-cooled mould through a refractory entry nozzle immersed in the first metal liquid to form a metal liquid pool. The metal liquid pool is solidified into an ingot where the composition of alloys varies continuously from the inside to the outside of the ingot.
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