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公开(公告)号：US09358758B2
公开(公告)日：2016-06-07
申请号：US14758694
申请日：2014-05-02
申请人： HITACHI METALS, LTD.
发明人： Nozomu Oda , Takayuki Segawa , Yasunori Nozaki
IPC分类号： B32B15/01 , B21B27/02 , B32B1/00 , C22C37/08 , C22C37/10 , C22C38/56 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/34 , C22C38/06 , C22C38/04 , C22C38/02 , B21B27/00 , C22C37/00 , C22C37/04 , B22D19/16 , B21B27/03 , B22D13/00
CPC分类号： B32B15/011 , B21B27/00 , B21B27/021 , B21B27/032 , B22D13/00 , B22D19/16 , B32B1/00 , B32B2307/536 , B32B2307/558 , C21D5/14 , C21D9/38 , C21D2211/005 , C21D2211/006 , C21D2251/02 , C22C37/00 , C22C37/04 , C22C37/08 , C22C37/10 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/34 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/56
摘要： A centrifugally cast hot-rolling composite roll comprising (a) an outer layer made of cast iron having a chemical composition comprising by mass 2.5-3.5% of C, 1.3-2.4% of Si, 0.2-1.5% of Mn, 3.5-5.0% of Ni, 0.8-1.5% of Cr, 2.5-5.0% of Mo, 1.8-4.0% of V, and 0.2-1.5% of Nb, the balance being Fe and inevitable impurities, a mass ratio of Nb/V being 0.1-0.7, and a mass ratio of Mo/V being 0.7-2.5, and meeting the condition of 2.5≦V+1.2Nb≦5.5, and having a structure comprising 0.3-10% by area of a graphite phase; (b) a shaft portion made of ductile cast iron in which the area ratio of ferrite is 35% or less; and (c) an intermediate cast iron layer.
摘要翻译： 一种离心铸造热轧复合辊，其特征在于，包括：（a）由铸铁制成的外层，所述外层由化学组成为质量为质量分数为2.5-3.5％的C，1.3-2.4％的Si，0.2-1.5％的Mn，3.5-5.0 的Ni，0.8-1.5％的Cr，2.5-5.0％的Mo，1.8-4.0％的V和0.2-1.5％的Nb，余量是Fe和不可避免的杂质，Nb / V的质量比为0.1 -0.7，Mo / V的质量比为0.7-2.5，满足条件2.5＆lt; lE; V + 1.2Nb＆nlE; 5.5，并且具有由石墨相的面积为0.3-10％的结构; （b）由铁素体的面积率为35％以下的球墨铸铁制成的轴部; 和（c）中间铸铁层。
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公开(公告)号：US11052440B2
公开(公告)日：2021-07-06
申请号：US16089204
申请日：2017-03-28
申请人： HITACHI METALS, LTD.
发明人： Yasunori Nozaki , Nozomu Oda , Shiho Fukumoto
IPC分类号： B21B27/02 , C22C38/48 , C22C38/54 , C22C38/44 , C22C38/56 , C22C38/46 , C22C38/58 , B32B1/08 , B32B15/01 , C22C37/00 , B22D19/16 , B22D13/00 , B21B27/00
摘要： An outer layer of a rolling roll having a chemical composition comprising by mass 1.3-2.8% of C, 0.3-1.8% of Si, 0.3-2.5% of Mn, 0-6.5% of Ni, 1-10% of Cr, 0.9-6% of Mo, 0-8% of W, 0.5-6% of V, 0-3% of Nb, and 0% or more and less than 0.01% of B, the balance being Fe and inevitable impurities, and meeting the formulae (1): 1000≤1177−52C+14Si−11Mn+6.8Cr+1W+0.65Mo+12V+15Nb≤1115, and (2): 5≤Cr+Mo+0.5W+V+1.2Nb≤15, wherein C, Si, Mn, Cr, W, Mo, V and Nb represent % by mass of these elements, and a structure containing eutectic carbide without graphite.
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公开(公告)号：US20140377587A1
公开(公告)日：2014-12-25
申请号：US14365528
申请日：2013-03-28
申请人： HITACHI METALS, LTD.
CPC分类号： B22D13/026 , B21B27/00 , B21B27/032 , B22D13/02 , B22D13/023 , B22D19/16 , B32B15/011 , C22C37/00 , C22C37/06 , C22C37/08 , C22C37/10 , Y10T428/12958
摘要： A centrifugally cast composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer being made of an Fe-based alloy having a chemical composition comprising by mass at least 0.8-3.0% of Cr, 1.5-6.0% of Mo, and 1.8-5.5% of V, and a metal structure in which the area ratio of graphite is 0.3-10%; the inner layer comprising a roll body portion fused to the outer layer, and shaft portions integrally extending from both ends of the roll body portion; and the total amount of Cr, Mo and V being 0.15-2.0% by mass in end portions of both shaft portions, and the difference in the total amount of Cr, Mo and V between one shaft portion and the other shaft portion being 0.2% or more by mass.
摘要翻译： 一种离心铸造复合辊，其包括通过离心浇铸法形成的外层，以及由球墨铸铁制成的内层，并与外层整体熔合; 所述外层由Fe系合金构成，所述Fe系合金的组成包含Cr：0.8〜3.0％，Mo：1.5〜6.0％，V：1.8〜5.5％的金属结构体， 石墨比例为0.3-10％; 所述内层包括熔融到所述外层的辊体部分和从所述辊体部分的两端一体地延伸的轴部; 两轴部的端部的Cr，Mo，V的总量为0.15〜2.0质量％，一个轴部和另一个轴部之间的Cr，Mo，V的总量的差为0.2％ 或更多。
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公开(公告)号：US09718106B2
公开(公告)日：2017-08-01
申请号：US14912511
申请日：2014-09-17
申请人： HITACHI METALS, LTD.
发明人： Toshiyuki Hattori , Nozomu Oda , Yasunori Nozaki
IPC分类号： B21B27/02 , B22D13/02 , C22C37/00 , C22C37/04 , C22C37/08 , B21B27/03 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/56 , C22C38/58
CPC分类号： B21B27/02 , B21B27/032 , B22D13/02 , C22C37/00 , C22C37/04 , C22C37/08 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/56 , C22C38/58 , C22C2204/00
摘要： A centrifugally cast, hot-rolling composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer having a chemical composition comprising by mass 1-3% of C, 0.4-3% of Si, 0.3-3% of Mn, 1-5% of Ni, 2-7% of Cr, 3-8% of Mo, 3-7% of V, and 0.01-0.12% of B, the balance being Fe and inevitable impurities, and meeting the relation expressed by Cr/(Mo+0.5W)
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公开(公告)号：US09044807B2
公开(公告)日：2015-06-02
申请号：US14365528
申请日：2013-03-28
申请人： HITACHI METALS, LTD.
IPC分类号： B22D13/02 , B21B27/00 , C22C37/00 , C22C37/06 , B21B27/03 , B32B15/01 , C22C37/08 , C22C37/10 , B22D19/16
CPC分类号： B22D13/026 , B21B27/00 , B21B27/032 , B22D13/02 , B22D13/023 , B22D19/16 , B32B15/011 , C22C37/00 , C22C37/06 , C22C37/08 , C22C37/10 , Y10T428/12958
摘要： A centrifugally cast composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer being made of an Fe-based alloy having a chemical composition comprising by mass at least 0.8-3.0% of Cr, 1.5-6.0% of Mo, and 1.8-5.5% of V, and a metal structure in which the area ratio of graphite is 0.3-10%; the inner layer comprising a roll body portion fused to the outer layer, and shaft portions integrally extending from both ends of the roll body portion; and the total amount of Cr, Mo and V being 0.15-2.0% by mass in end portions of both shaft portions, and the difference in the total amount of Cr, Mo and V between one shaft portion and the other shaft portion being 0.2% or more by mass.
摘要翻译： 一种离心铸造复合辊，其包括通过离心浇铸法形成的外层，以及由球墨铸铁制成的内层，并与外层整体熔合; 所述外层由Fe系合金构成，所述Fe系合金的组成包含Cr：0.8〜3.0％，Mo：1.5〜6.0％，V：1.8〜5.5％的金属结构体， 石墨比例为0.3-10％; 所述内层包括熔融到所述外层的辊体部分和从所述辊体部分的两端一体地延伸的轴部; 两轴部的端部的Cr，Mo，V的总量为0.15〜2.0质量％，一个轴部和另一个轴部之间的Cr，Mo，V的总量的差为0.2％ 或更多。
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公开(公告)号：US20140248511A1
公开(公告)日：2014-09-04
申请号：US14349009
申请日：2012-11-21
申请人： HITACHI METALS, LTD.
发明人： Nozomu Oda , Takayuki Segawa , Yasunori Nozaki
CPC分类号： B32B15/011 , B21B27/00 , B21B27/03 , B22D13/02 , B22D19/16 , C22C37/08 , C22C37/10 , Y10T29/49563 , Y10T428/12958
摘要： A centrifugally cast composite roll comprising an outer layer made of cast iron having a chemical composition comprising, by mass, 2.7-3.5% of C, 1.5-2.5% of Si, 0.4-1.0% of Mn, 3.7-5.1% of Ni, 0.8-2.2% of Cr, 1.5-4.5% of Mo, 2.0-4.5% of V, and 0.5-2.0% of Nb, the balance being Fe and inevitable impurities, a mass ratio of Nb/V being 0.18-0.65, and a mass ratio of Mo/V being 0.7-2.5, and a structure comprising, by area, 15-45% of a cementite phase and 1-10% of a graphite phase, and an inner layer made of cast iron having excellent mechanical strength and metallurgically bonded to the outer layer; a usable region of the outer layer as deep as 10 mm or more from the surface containing substantially no speck-like-segregated dendrites of bainite and/or martensite having diameters of 1.5 mm or more.
摘要翻译： 一种离心铸造复合辊，其包括由铸铁制成的外层，其具有以质量计包含C：2.7-3.5％的Si，1.5-2.5％的Si，0.4-1.0％的Mn，3.7-5.1％的Ni， Cr的0.8-2.2％，Mo中的1.5-4.5％，V为2.0-4.5％，Nb为0.5-2.0％，余量为Fe和不可避免的杂质，Nb / V的质量比为0.18-0.65， Mo / V的质量比为0.7-2.5，以及包括面积为15-45％的渗碳体相和1-10％石墨相的结构，以及由铸铁制成的具有优异的机械强度的内层 并与外层冶金结合; 外表面的可用区域从基本上不含有直径为1.5mm以上的贝氏体和/或马氏体的斑点状分离的树突的表面的深度为10mm以上。
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公开(公告)号：US11192156B2
公开(公告)日：2021-12-07
申请号：US16479814
申请日：2018-02-08
申请人： HITACHI METALS, LTD.
发明人： Yasunori Nozaki , Nozomu Oda , Toshiyuki Hattori
摘要： A composite roll for rolling comprising an outer layer and an inner layer integrally fused to each other; the outer layer being made of an Fe-based alloy comprising by mass 1-3% of C, 0.3-3% of Si, 0.1-3% of Mn, 0.1-5% of Ni, 1-7% of Cr, 1-8% of Mo, 4-7% of V, 0.005-0.15% of N, and 0.05-0.2% of B; the inner layer being made of graphite cast iron comprising by mass 2.4-3.6% of C, 1.5-3.5% of Si, 0.1-2% of Mn, 0.1-2% of Ni, less than 0.7% of Cr, less than 0.7% of Mo, 0.05-1% of V, and 0.01-0.1% of Mg; the inner layer comprising a core portion fused to the outer layer, and shaft portions integrally extending from both ends of the core portion; at least one of the shaft portions containing 200/cm2 or more of hard MC carbides having circle-equivalent diameters of 5 μm or more.
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公开(公告)号：US09724740B2
公开(公告)日：2017-08-08
申请号：US14911947
申请日：2014-08-28
申请人： HITACHI METALS, LTD.
IPC分类号： B21B27/03 , B21B27/02 , B22D13/02 , C22C37/00 , B22D19/16 , B32B15/01 , C22C37/06 , C22C37/08 , C22C37/10 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/32 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/54 , C22C38/56 , C22C38/60
CPC分类号： B21B27/02 , B21B27/032 , B22D13/02 , B22D13/026 , B22D19/16 , B32B15/011 , C22C37/00 , C22C37/06 , C22C37/08 , C22C37/10 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/32 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/54 , C22C38/56 , C22C38/60
摘要： A centrifugally cast composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer, the outer layer being made of an Fe-based alloy comprising by mass 1.3-3.7% of C, 0.3-3% of Si, 0.1-3% of Mn, 1-7% of Cr, 1-8% of Mo, at least one of 2.5-7% of V, 0.1-3% of Nb and 0.1-5% of W (V is indispensable), and 0.01-0.2% of B and/or 0.05-0.3% of S, the balance being substantially Fe and inevitable impurities, the outer layer having a structure containing no graphite; the inner layer comprising a core portion fused to the outer layer, and a drive-side shaft portion and a free-side shaft portion integrally extending from both ends of the core portion; the total amount of Cr, Mo, V, Nb and W being 0.35-2% by mass in an end portion of the drive-side shaft portion and 0.15-1.8% by mass in an end portion of the free-side shaft portion, the former being larger than the latter by 0.2% or more by mass.
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公开(公告)号：US11224907B2
公开(公告)日：2022-01-18
申请号：US16481208
申请日：2018-02-08
申请人： HITACHI METALS, LTD.
发明人： Yasunori Nozaki , Nozomu Oda , Toshiyuki Hattori
摘要： A composite roll for rolling having a structure comprising centrifugally cast outer and intermediate layers of an Fe-based alloy integrally fused to an inner layer of ductile cast iron; the outer layer having a composition comprising by mass 1-3% of C, 0.3-3% of Si, 0.1-3% of Mn, 0.5-5% of Ni, 1-7% of Cr, 2.2-8% of Mo, 4-7% of V, 0.005-0.15% of N, and 0.05-0.2% of B, the balance being Fe and inevitable impurities; the intermediate layer containing 0.025-0.15% by mass of B; the B content in the intermediate layer being 40-80% of that in the outer layer; and the total amount of Cr, Mo, V, Nb and W in the intermediate layer being 40-90% of that in the outer layer.
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公开(公告)号：US09815098B2
公开(公告)日：2017-11-14
申请号：US14912727
申请日：2014-09-17
申请人： HITACHI METALS, LTD.
发明人： Toshiyuki Hattori , Nozomu Oda , Yasunori Nozaki
IPC分类号： B21B27/02 , B21B27/03 , B22D13/02 , C22C37/00 , C22C37/04 , C22C37/08 , C22C38/00 , C22C38/60 , B22D19/16 , B21B1/26
CPC分类号： B21B27/032 , B21B1/26 , B21B27/02 , B21B2267/24 , B22D13/02 , B22D13/026 , B22D19/16 , C22C37/00 , C22C37/04 , C22C37/08 , C22C38/00 , C22C38/60
摘要： A centrifugally cast, hot-rolling composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer having a chemical composition comprising by mass 1.6-3% of C, 0.3-2.5% of Si, 0.3-2.5% of Mn, 0.1-5% of Ni, 2.8-7% of Cr, 1.8-6% of Mo, 3.3-6.5% of V, and 0.02-0.12% of B (or 0.01-0.12% of B, and 0.05-02% of S), the balance being Fe and inevitable impurities, and meeting the relation expressed by Cr/(Mo+0.5W)≧−2/3[C−0.2(V+1.19Nb)]+11/6, wherein W=0, and Nb=0, when W and Nb are not contained, and containing by area 1-15% of MC carbide, 0.5-20% of carboboride, and 1-25% of Cr-based carbide.
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