| 发明名称 |
Material für die Aussenschicht einer Warmumformwalze und Verfahren zur Herstellung einer Warmumformwalze |
| 摘要 |
A roll outer layer material for hot rolling consists essentially, as analyzed in weight percent, of 2.5-4.0% C, 6.0-20% Cr, 3.0-10.0% V, 0.6-5.0% Nb, 2.0-15% Mo, 3.0% or below Si, 3.0% or below Mn, C, V, Nb and Cr satisfying a following formula (1), 10.5(%) </= 6.5.C(%) - 1.3.V(%) - 0.7.Nb(%) </= 2.Cr(%) - 2(%) (1), and the balance being Fe and incidental impurities. A method of manufacturing a roll for hot rolling comprises the steps of centrifugally casting an outer layer material having the above composition, centrifugally casting graphite steel containing 0.5% or above of C as an intermediate layer, and casting an axis material which is a spheroidal graphite cast iron, a flake graphite cast iron or a graphite steel. C is present in the intermediate layer in an amount which satisfies a following formula (2), C (intermediate layer) >/= 2.0 - 0.5 (C - 0.2V - 0.11Nb)(outer layer) (2) <MATH> |
| 申请公布号 |
DE69504613(T2) |
申请公布日期 |
1999.01.28 |
| 申请号 |
DE1995604613T |
申请日期 |
1995.06.27 |
| 申请人 |
KAWASAKI STEEL CORP., KOBE, HYOGO, JP |
发明人 |
ICHINO, KENJI, C/O CHITA WORKS, HANDA-SHI, AICHI 475, JP;KOSEKI, TOMOYA, C/O CHITA WORKS, HANDA-SHI, AICHI 475, JP;SAWA, YOSHITAKA, C/O CHITA WORKS, HANDA-SHI, AICHI 475, JP |
| 分类号 |
B21B27/00;B22D19/16;B32B15/01;C22C37/00;C22C37/06;C22C37/10;(IPC1-7):C22C37/06;C22C38/36;C22C38/22;B21B27/02;C22C38/24 |
主分类号 |
B21B27/00 |
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