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发明公开
CN104641013A 热轧用辊外层材料以及热轧用复合辊 失效 - 权利终止

热轧用辊外层材料以及热轧用复合辊
摘要：
本发明提供耐磨性、耐热冲击性以及耐表面粗糙性均优秀的热轧用辊外层材料以及热轧用复合辊。以质量％表示，外层材料的组成含有C：2.4％～3.5％、Si：1.2％～2.4％、Mn：0.2％～2.0％、Cr：0.8％～2.1％、Mo：0.3％～1.1％、Ni：3.0％～6.0％、V：1.0％～2.2％、Nb：0.1％～0.5％、REM：0.0005％～0.1％、Al：0.003％～0.05％，并且C、Cr、V、Nb、REM、Al的含量满足Cr+0.2≤C-(0.24×V+0.13×Nb)≤3.0、0.01≤REM/Al≤3.2(这里，C、Cr、V、Nb、REM、Al表示各元素的含量(以质量％表示))，剩余部分为由Fe以及不可避免的杂质构成的组成。
摘要（英）：

The present invention provides a hot-rolling composite roll and an outer-layer material for a hot-rolling roll having exceptional resistance to wear, resistance to thermal shock, and resistance to surface roughening. The outer-layer material comprises 2.4% to 3.5% of C, 1.2% to 2.4% of Si, 0.2% to 2.0% of Mn, 0.8% to 2.1% of Cr, 0.3% to 1.1% of Mo, 3.0% to 6.0% of Ni, 1.0% to 2.2% of V, 0.1% to 0.5% of Nb, 0.0005% to 0.1% of REM, and 0.003 to 0.05% of Al (all figures expressing percentage by mass). The amounts of C, Cr, V, Nb, REM, and Al that the outer-layer material contains are such that Cr+0.2<=C-(0.24*V+0.13*Nb)<=3.0 and 0.01<=REM/Al<=3.2 (C, Cr, V, Nb, REM, and Al represent the respective elemental content (expressed in percentage by mass)). The balance comprises Fe and inevitable impurities.

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