Method and apparatus for improved melt flow during continuous strip casting

Patent · Tue Nov 12 04:00:00 EST 1991

OSTI ID:7087400

Follstaedt, D W; King, E L; Schneider, K C

The continuous casting of metal strip using the melt overflow process is improved by controlling the weir conditions in the nozzle to provide a more uniform flow of molten metal across the width of the nozzle and reducing the tendency for freezing of metal along the interface with refractory surfaces. A weir design having a sloped rear wall and tapered sidewalls and critical gap controls beneath the weir has resulted in the drastic reduction in edge tearing and a significant improvement in strip uniformity. The floor of the container vessel is preferably sloped and the gap between the nozzle and the rotating substrate is critically controlled. The resulting flow patterns observed with the improved casting process have reduced thermal gradients in the bath, contained surface slag and eliminated undesirable solidification near the discharge area by increasing the flow rates at those points. 8 figures.

• DOE Contract Number: FC07-88ID12712
• Assignee: Armco Inc., Middletown, OH (United States)
• Patent Number(s): A; US 5063990
• Application Number: PPN: US 7-543612
• OSTI ID: 7087400
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
CASTING
CONTROL EQUIPMENT
CRUCIBLES
ELEMENTS
EQUIPMENT
FABRICATION
FLOW REGULATORS
FLUID FLOW
FLUIDS
LIQUID METALS
LIQUIDS
METALS
TEMPERATURE GRADIENTS