Apparatus for the direct production of scale-free thin metal strip
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United States of America Patent
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Jul 8, 2003
Grant Date -
Feb 14, 2002
app pub date -
Aug 21, 2001
filing date -
Jul 12, 2000
priority date (Note) -
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Abstract
A method and apparatus for the direct production, from molten metal, of scale-free thin metal strip. Hot thin metal strip exiting a continuous caster system is directed to a reducing chamber wherein a reducing gas reduces strip surface oxides while the cast metal strip is at an elevated temperature from retained heat from the molten metal. A cooling unit following the reducing chamber is used to cool the strip to a temperature below about 150.degree. C. prior to exposing the strip to an oxidizing atmosphere. In various embodiments of the invention, strip thickness is reduced with use of hot and cold rolling mills and the scale-free surface of the strip is coated with protective coatings.
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