COMPOSITE ROLL OF CEMENTED CARBIDE, AND STEEL HOT-ROLLING METHOD USING THE SAME

The present invention has an object to provide a manufacturing method of a long large-diameter composite cemented carbide roll and a hot rolling method of steel using the same. The roll manufacturing method covers a composite cemented carbide roll formed by engaging with, and fixing to, a steel arbo...

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Bibliographic Details
Main Authors HIRUTA, TOSHIKI, KENMOCHI, KAZUHITO, KIJIMA, HIDEO, HATTORI, T, HORIUCHI, M
Format Patent
LanguageEnglish
French
German
Published 12.02.2003
Edition7
Subjects
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
POWDER METALLURGY
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
WORKING METALLIC POWDER
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Summary:The present invention has an object to provide a manufacturing method of a long large-diameter composite cemented carbide roll and a hot rolling method of steel using the same. The roll manufacturing method covers a composite cemented carbide roll formed by engaging with, and fixing to, a steel arbor, a sleeve comprising an outer layer made of a cemented carbide formed by integrating a plurality of previously sintered cylindrical formed members and an inner layer made of a steel material formed on the inner surface of the outer layer. The sleeve has a sectional area ratio So/Si of the sectional area So of the outer layer and the sectional area Si of the inner layer in a cross-section perpendicular to the rotation axis within a range of from 0.3 to 20. The sleeve has a length within a range of from 520 to 6,000 mm. When hot-rolling steel, the cemented carbide rolls of the invention are used as work rolls of at least one stand for a roughing mill and/or a finishing mill.
Bibliography:Application Number: EP20010930159