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公开(公告)号：US09809875B2
公开(公告)日：2017-11-07
申请号：US14422825
申请日：2013-10-18
IPC分类号： C22C38/28 , C22C38/50 , C22C38/14 , C21C7/10 , C22C38/00 , C21D1/06 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/32 , C22C38/40 , C21C7/064 , C22C38/42 , C22C38/44 , C21D9/40
CPC分类号： C22C38/50 , C21C7/064 , C21C7/10 , C21D1/06 , C21D9/40 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/40 , C22C38/42 , C22C38/44
摘要： A case hardening steel includes as a chemical composition, by mass %, C: 0.10% to 0.40%, Si: 0.01% to 0.80%, Mn: 0.1% to 1.5%, Cr: 0.35% to 2.0%, Al: 0.01% to 0.05%, REM: 0.0001% to 0.050%, O: 0.0001% to 0.0030%, Ca: 0.0050% or less as necessary, Ti: less than 0.005%, N: 0.015% or less, P: 0.03% or less, S: 0.01% or less, and the balance consists of Fe and impurities. The case hardening steel also includes a composition inclusion which is an inclusion containing REM, O, S, and Al, or an inclusion containing REM, Ca, O, S, and Al, to which TiN is adhered.
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公开(公告)号：US09732407B2
公开(公告)日：2017-08-15
申请号：US14352290
申请日：2012-10-05
IPC分类号： C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C21C7/06 , C21D1/32 , C21D9/40 , C21D9/36 , B22D11/01 , B22D27/02 , C21D8/00 , C22C38/00 , C21C7/064 , F16C33/62
CPC分类号： C22C38/50 , B22D11/015 , B22D27/02 , C21C7/06 , C21C7/0645 , C21D1/32 , C21D8/005 , C21D9/36 , C21D9/40 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/46 , F16C33/62 , F16C2300/02
摘要： A bearing steel includes, as a metallographic structure, inclusions which contain complex oxysulfides including Rare Earth Metal, Ca, O, S, and Al, TiN, MnS, Al2O3, and complex oxides including Al and Ca, wherein, a number fraction of the complex oxysulfides in a total number of the inclusions is 50% to less than 100% and a number of complex oxysulfides having a major axis of 5 μm or more is 0.001 pieces to 2 pieces in an observed section of 1 mm2, and a number of TiN existing independently from the complex oxysulfides and having a major axis of 5 μm or more is 0.001 pieces to less than 1.0 piece in an observed section of 1 mm2.
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公开(公告)号：US09896749B2
公开(公告)日：2018-02-20
申请号：US14423754
申请日：2013-10-18
IPC分类号： C22C38/14 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/40 , C21C7/064 , C21C7/10 , C21D9/40
CPC分类号： C22C38/14 , C21C7/064 , C21C7/10 , C21D9/40 , C21D2211/004 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/40
摘要： A steel for induction hardening includes as a chemical composition, by mass %, C: 0.45% to 0.85%, Si: 0.01% to 0.80%, Mn: 0.1% to 1.5%, Al: 0.01% to 0.05%, REM: 0.0001% to 0.050%, O: 0.0001% to 0.0030%. Ca: 0.0050% or less as necessary, Ti: less than 0.005%, N: 0.015% or less, P: 0.03% or less, S: 0.01% or less, and the balance consists of Fe and impurities. The steel for induction hardening also includes a composition inclusion which is an inclusion containing REM, O, S, and Al, or an inclusion containing REM, Ca, O, S, and Al, to which TiN is adhered.
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公开(公告)号：US20150203943A1
公开(公告)日：2015-07-23
申请号：US14423754
申请日：2013-10-18
CPC分类号： C22C38/14 , C21C7/064 , C21C7/10 , C21D9/40 , C21D2211/004 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/40
摘要： A steel for induction hardening includes as a chemical composition, by mass %, C: 0.45% to 0.85%, Si: 0.01% to 0.80%, Mn: 0.1% to 1.5%, Al: 0.01% to 0.05%, REM: 0.0001% to 0.050%, O: 0.0001% to 0.0030%. Ca: 0.0050% or less as necessary, Ti: less than 0.005%, N: 0.015% or less, P: 0.03% or less, S: 0.01% or less, and the balance consists of Fe and impurities. The steel for induction hardening also includes a composition inclusion which is an inclusion containing REM, O, S, and Al, or an inclusion containing REM, Ca, O, S, and Al, to which TiN is adhered.
摘要翻译： 用于感应淬火的钢包括质量％C：0.45％至0.85％，Si：0.01％至0.80％，Mn：0.1％至1.5％，Al：0.01％至0.05％，REM：0.0001 ％至0.050％，O：0.0001％至0.0030％。 Ca：0.0050％以下，Ti：小于0.005％，N：0.015％以下，P：0.03％以下，S：0.01％以下，余量由Fe和杂质构成。 用于感应淬火的钢还包括含有REM，O，S和Al的夹杂物或者含有附着有TiN的REM，Ca，O，S和Al的夹杂物的组合物夹杂物。
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公开(公告)号：US20150191808A1
公开(公告)日：2015-07-09
申请号：US14422825
申请日：2013-10-18
IPC分类号： C22C38/50 , C22C38/42 , C22C38/32 , C22C38/28 , C22C38/26 , C22C38/00 , C22C38/22 , C22C38/20 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/44 , C22C38/24
CPC分类号： C22C38/50 , C21C7/064 , C21C7/10 , C21D1/06 , C21D9/40 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/40 , C22C38/42 , C22C38/44
摘要： A case hardening steel includes as a chemical composition, by mass %, C: 0.10% to 0.40%, Si: 0.01% to 0.80%, Mn: 0.1% to 1.5%, Cr: 0.35% to 2.0%, Al: 0.01% to 0.05%, REM: 0.0001% to 0.050%, O: 0.0001% to 0.0030%, Ca: 0.0050% or less as necessary, Ti: less than 0.005%, N: 0.015% or less, P: 0.03% or less, S: 0.01% or less, and the balance consists of Fe and impurities. The case hardening steel also includes a composition inclusion which is an inclusion containing REM, O, S, and Al, or an inclusion containing REM, Ca, O, S, and Al, to which TiN is adhered.
摘要翻译： 表面硬化钢以质量％计含有C：0.10〜0.40％，Si：0.01〜0.80％，Mn：0.1〜1.5％，Cr：0.35〜2.0％，Al：0.01％ 〜0.05％，REM：0.0001〜0.050％，O：0.0001〜0.0030％，Ca：0.0050％以下，Ti：小于0.005％，N：0.015％以下，P：0.03％以下， S：0.01％以下，余量由Fe和杂质构成。 表面硬化钢还包括含有REM，O，S和Al的夹杂物或者含有附着有TiN的REM，Ca，O，S和Al的夹杂物的组合物夹杂物。
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公开(公告)号：US20190233927A1
公开(公告)日：2019-08-01
申请号：US16313931
申请日：2017-07-04
IPC分类号： C22C38/60 , C22C38/38 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/14 , C22C38/06 , C22C38/00
CPC分类号： C22C38/60 , B22D11/00 , B22D11/124 , C21D8/065 , C21D2211/004 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/38
摘要： A steel for machine structural use is provided which is excellent in machinability, rusting characteristics, and hot ductility. The steel for machine structural use according to the present embodiment has a chemical composition which consists of, in mass %, C: 0.30 to 0.80%, Si: 0.01 to 0.80%, Mn: 0.20 to 2.00%, P: 0.030% or less, S: 0.010 to 0.100%, Pb: 0.010 to 0.100%, Al: 0.010 to 0.050%, N: 0.015% or less and O: 0.0005 to 0.0030%, with the balance being Fe and impurities, the chemical composition satisfying Formula (1). The total number of specific inclusions included in the steel which are any of MnS inclusions, Pb inclusions and composite inclusions containing MnS and Pb and which have an equivalent circular diameter of 5 μm or more is 40 per mm2 or more. Mn/S≥8.0 (1) Where, a content (mass %) of a corresponding element is substituted for each symbol of an element in Formula (1).
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公开(公告)号：US10350676B2
公开(公告)日：2019-07-16
申请号：US14785815
申请日：2013-04-23
IPC分类号： C21C7/00 , B22D11/11 , C22C38/26 , C22C38/24 , C21C7/06 , C22C38/00 , C22C38/58 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/40 , C21C7/10 , C21D8/06 , C21D9/02 , B22D11/00 , B22D11/113 , B22D11/114 , C21D1/26 , C21D6/00 , C22C38/02 , C22C38/08 , C22C38/14 , C22C38/16 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
摘要： A spring steel includes a predetermined chemical composition and a composite inclusion having a maximum diameter of 2 μm or more that TiN is adhered to an inclusion containing REM, O and Al, in which the number of the composite inclusion is 0.004 pieces/mm2 to 10 pieces/mm2, the maximum diameter of the composite inclusion is 40 μm or less, the sum of the number density of an alumina cluster having the maximum diameter of 10 μm or more, MnS having the maximum diameter of 10 μm or more and TiN having the maximum diameter of 1 μm to 10 pieces/mm2.
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公开(公告)号：US20190169723A1
公开(公告)日：2019-06-06
申请号：US16320651
申请日：2017-07-27
IPC分类号： C22C38/60 , C21C7/04 , C22C38/44 , C22C38/32 , C22C38/28 , C22C38/26 , C22C38/22 , C22C38/20 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/24 , C22C38/00
摘要： A steel for machine structural use according to the present embodiment has a chemical composition which consists of, in mass %, C: 0.15 to less than 0.30%, Si: 0.01 to 0.80%, Mn: 0.20 to 2.00%, P: 0.030% or less, S: 0.010 to 0.100%, Pb: 0.010 to 0.100%, Al: 0.010 to 0.050%, N: 0.015% or less, O: 0.0005 to 0.0030% and Cr: 0.50 to 2.00%, with the balance being Fe and impurities, the chemical composition satisfying Formula (1). The total number of specific inclusions included in the steel which are any of MnS inclusions, Pb inclusions and composite inclusions containing MnS and Pb and which have an equivalent circular diameter of 5 μm or more is 40 per mm2 or more. Mn/S≥8.0 (1) Where, a content (mass %) of a corresponding element is substituted for each symbol of an element in Formula (1).
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公开(公告)号：US09487848B2
公开(公告)日：2016-11-08
申请号：US15066730
申请日：2016-03-10
IPC分类号： C22C38/60 , C22C38/18 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/38 , C22C38/32 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22
CPC分类号： C22C38/38 , C21D1/25 , C21D7/13 , C21D8/06 , C21D2211/004 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32
摘要： The present invention provides hot forging use non heat-treated steel where controlled cooling after shaping by hot forging is used to make the main structure of the steel martensite even without subsequent reheating and heat treatment by quenching and tempering and thereby give a steel part with a high strength and high toughness and superior machineability and a hot forged non heat-treated steel part made of that steel, in particular provides a martensite type hot forging use non heat-treated steel characterized by containing, by mass %, C: 0.10 to 0.20%, Si: 0.10 to 0.50%, Mn: 1.0 to 3.0%, P: 0.001 to 0.1%, S: 0.005 to 0.8%, Cr: 0.10 to 1.50%, Al: over 0.1 to 0.20%, and N: 0.0020 to 0.0080% and having a balance of substantially Fe and unavoidable impurities and a hot forged non heat-treated steel part made of such steel and characterized in that the steel structure of the entire cross-section at part or all of that part is substantially a martensite structure with an effective crystal grain size of 15 μm or less.
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公开(公告)号：US20140261906A1
公开(公告)日：2014-09-18
申请号：US14352290
申请日：2012-10-05
IPC分类号： C22C38/50 , C21D9/36 , C21D9/40 , C22C38/28 , C22C38/06 , C22C38/20 , C22C38/02 , C22C38/00 , C22C38/44 , C22C38/42 , C22C38/46 , C22C38/32 , C21D8/00 , C22C38/04
CPC分类号： C22C38/50 , B22D11/015 , B22D27/02 , C21C7/06 , C21C7/0645 , C21D1/32 , C21D8/005 , C21D9/36 , C21D9/40 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/46 , F16C33/62 , F16C2300/02
摘要： A bearing steel includes, as a metallographic structure, inclusions which contain complex oxysulfides including Rare Earth Metal, Ca, O, S, and Al, TiN, MnS, Al2O3, and complex oxides including Al and Ca, wherein, a number fraction of the complex oxysulfides in a total number of the inclusions is 50% to less than 100% and a number of complex oxysulfides having a major axis of 5 μm or more is 0.001 pieces to 2 pieces in an observed section of 1 mm2, and a number of TiN existing independently from the complex oxysulfides and having a major axis of 5 μm or more is 0.001 pieces to less than 1.0 piece in an observed section of 1 mm2.
摘要翻译： 轴承钢作为金相组织包含含有复合氧硫化物，包括稀土金属，Ca，O，S和Al，TiN，MnS，Al 2 O 3和包括Al和Ca的复合氧化物的夹杂物，其中， 总的夹杂物中的复合氧硫化物为50〜小于100％，长轴为5μm以上的复合氧硫化物的数量为1×2的观察部为0.001片〜2片， 独立于复合氧硫化物并且长轴为5μm或更大的TiN在1mm2的观察部分中为0.001至小于1.0。
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