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OUTER-LAYER MATERIAL FOR HOT-ROLLING ROLL AND HOT-ROLLING COMPOSITE ROLL
OUTER-LAYER MATERIAL FOR HOT-ROLLING ROLL AND HOT-ROLLING COMPOSITE ROLL
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机译：热轧和热轧复合轧辊的外层材料
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摘要
A rolled outer material for hot rolling and a composite roll for hot rolling, which are excellent in abrasion resistance, thermal shock resistance and inner surface roughness. The composition of the outer layer material, in mass% A steel sheet having a composition of C of 2.4 to 3.5%, Si of 1.2 to 2.4%, Mn of 0.2 to 2.0%, Cr of 0.8 to 2.1%, Mo of 0.3 to 1.1%, Ni of 3.0 to 6.0%, V of 1.0 to 2.2% , Cr, V, Nb, REM and Al are contained in an amount of 0.1 to 0.5%, REM: 0.0005 to 0.1% and Al: 0.003 to 0.05% Nb)? 3.0, 0.01? REM / Al? 3.2 (where C, Cr, V, Nb, REM, Al: content (mass%) of each element) and the balance Fe and inevitable impurities .
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机译：具有优异的耐磨性，耐热冲击性和内表面粗糙度的热轧用轧制外部材料和热轧用复合辊。外层材料的组成，以质量％计，具有C为2.4至3.5％，Si为1.2至2.4％，Mn为0.2至2.0％，Cr为0.8至2.1％，Mo为0.3至1.0的钢板。包含1.1％，3.0％至6.0％的Ni，1.0％至2.2％的V，0.1％至0.5％的Cr，V，Nb，REM和Al，REM：0.0005至0.1％和Al：0.003至0.05％ Nb）？ 3.0、0.01？ REM / Al？ 3.2（其中C，Cr，V，Nb，REM，Al：每种元素的含量（质量％））和余量Fe和不可避免的杂质。
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