| 摘要 |
PCT No. PCT/JP96/00544 Sec. 371 Date Oct. 29, 1996 Sec. 102(e) Date Oct. 29, 1996 PCT Filed Mar. 6, 1996 PCT Pub. No. WO96/27688 PCT Pub. Date Sep. 12, 1996A centrifugal cast roll shell material composed of a granular MC carbide, graphite and C: 2.5 to 4.7%, Si: 0.8 to 3.2%, Mn: 0.1 to 2.0%, Cr: 0.4 to 1.9%, Mo: 0.6 to 5%, V: 3.0 to 10.0% and Nb: 0.6 to 7.0%, satisfying the following formulae (1), (2), (3) and (4):2.0+0.715 V+0.10 Nb</=C (%)(1)1.1</=Mo/Cr(2)Nb/V</=0.8(3)0.2</=Nb/V(4),the remainder being Fe and inevitable impurities, wherein the pouring temperature is 1,400 DEG C. or higher.
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