发明名称 |
COMPOSITE ROLL OF CEMENTED CARBIDE, AND STEEL HOT-ROLLING METHOD USING THE SAME |
摘要 |
<p>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.</p> |
申请公布号 |
EP1283079(A1) |
申请公布日期 |
2003.02.12 |
申请号 |
EP20010930159 |
申请日期 |
2001.05.15 |
申请人 |
JFE STEEL CORPORATION;HITACHI METALS, LTD. |
发明人 |
KIJIMA, HIDEO;HIRUTA, TOSHIKI;KENMOCHI, KAZUHITO;HATTORI, T.;HORIUCHI, M |
分类号 |
B22F7/00;B21B1/26;B21B27/00;B21B27/03;B22F7/06;(IPC1-7):B21B1/00 |
主分类号 |
B22F7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|