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1. 发明申请

US20190241986A1 HEAT TREATMENT METHOD OF ROD-SHAPE WORKPIECE 审中-公开
公开(公告)号：US20190241986A1
公开(公告)日：2019-08-08
申请号：US16312368
申请日：2017-05-26
申请人： NTN CORPORATION
发明人： Tsuneaki HIRAOKA , Shintaro SUZUKI , Yuuki TABUCHI
IPC分类号： C21D1/10 , C21D9/28 , C21D9/36 , F16C33/34
CPC分类号： C21D1/10 , C21D9/28 , C21D9/36 , F16C33/34 , Y02P10/253
摘要： When a rod-shaped workpiece (W) having an outer peripheral surface with a circular cross section is inductively heated to a quenching temperature while being conveyed at a predetermined velocity along an axial direction of the rod-shaped workpiece (W), the rod-shaped workpiece (W) being currently conveyed is heated to a predetermined temperature equal to or lower than the quenching temperature by a first heating coil (2A), which is electrically connected to a first high-frequency power supply (3) and has a constant output. Then, the rod-shaped workpiece (W) being currently conveyed is heated so as to be maintained at the quenching temperature by a second heating coil (2B), which is electrically connected to a second high-frequency power supply (4) and has a constant output.

2. 发明授权

US10053764B2 Method and steel component 有权
公开(公告)号：US10053764B2
公开(公告)日：2018-08-21
申请号：US14422726
申请日：2013-08-19
申请人： AKTIEBOLAGET SKF
发明人： Staffan Larsson , Walter Datchary , Isabella Flodström , Peter Neuman
IPC分类号： C23C8/32 , C21D1/06 , C21D9/36 , C23C8/80 , C23C8/34 , C21D9/40 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/22 , C23C8/56 , C23F17/00
CPC分类号： C23C8/32 , C21D1/06 , C21D9/36 , C21D9/40 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/22 , C23C8/34 , C23C8/56 , C23C8/80 , C23F17/00
摘要： A method for heat treating a steel component, which comprises the steps of: (a) carbonitriding the steel component, and (b) austenitically nitrocarburizing the steel component.

3. 发明授权

US09732407B2 Bearing steel and method for producing same 有权
公开(公告)号：US09732407B2
公开(公告)日：2017-08-15
申请号：US14352290
申请日：2012-10-05
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Masayuki Hashimura , Masafumi Miyazaki , Hideaki Yamamura , Takahisa Suzuki , Takashi Fujita
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.

4. 发明申请

US20170081738A1 METHOD & METAL COMPONENT 审中-公开
公开(公告)号：US20170081738A1
公开(公告)日：2017-03-23
申请号：US15311412
申请日：2015-06-05
申请人： Aktiebolaget SKF
发明人： Anna Isabella Flodstrom , Staffan Larsson
IPC分类号： C21D9/36 , C21D9/38 , F16C33/64 , C21D1/42 , C23C8/22 , C23C8/32 , C21D9/40 , C21D1/06
CPC分类号： C21D9/36 , C21D1/06 , C21D1/10 , C21D1/42 , C21D9/38 , C21D9/40 , C22C38/44 , C23C8/22 , C23C8/32 , C23C8/80 , F16C33/64 , F16C2223/12 , F16C2223/16 , F16C2223/18 , Y02P10/253
摘要： A method for surface hardening at least one part of a surface of a metal component is provided. The steps include a) enriching the at least one part of a surface of a metal component with at least one of carbon and nitrogen, and b) induction hardening the at least one part of the surface of the metal component.

5. 发明申请

US20160333438A1 BEARING PART 审中-公开
标题翻译：轴承部分
公开(公告)号：US20160333438A1
公开(公告)日：2016-11-17
申请号：US15110390
申请日：2015-01-09
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Masashi SAKAMOTO , Junichi KODAMA , Yutaka NEISHI
IPC分类号： C21D9/40 , C22C38/54 , C22C38/44 , C22C38/20 , C21D8/06 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C21D9/36 , F16C33/30 , C22C38/32
CPC分类号： C21D9/40 , B22D23/00 , C21D1/18 , C21D1/32 , C21D8/065 , C21D9/36 , C21D9/38 , C21D2211/001 , C21D2211/003 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/32 , C22C38/40 , C22C38/44 , C22C38/54 , F16C33/30 , F16C33/62 , F16C33/64 , F16C2204/66 , F16C2204/70 , F16C2204/72 , F16C2220/44 , F16C2223/02 , F16C2223/10
摘要： A bearing part according the present invention includes, as the chemical composition, by mass %, C: 0.95% to 1.10%, Si: 0.10% to 0.70%, Mn: 0.20% to 1.20%, Cr: 0.90% to 1.60%, Al: 0.010% to 0.100%, N: 0.003% to 0.030%, P: 0.025% or less, S: 0.025% or less, O: 0.0010% or less, and optionally Mo: 0.25% or less, B: 0.0050% or less, Cu: 1.0% or less, Ni: 3.0% or less, and Ca: 0.0015% or less, and a remainder including Fe and impurities; metallographic structure includes a retained austenite, a spherical cementite and a martensite; an amount of the retained austenite is 15% to 25%, by volume %; an average grain size of prior-austenite is 8.0 μm or less; and a number density of a void having a circle equivalent diameter of 0.02 μm to 3.0 μm is 2000 mm−2 or less in the metallographic structure.
摘要翻译：本发明的轴承部件按质量％计含有C：0.95％〜1.10％，Si：0.10％〜0.70％，Mn：0.20％〜1.20％，Cr：0.90％〜1.60％ Al：0.010〜0.100％，N：0.003％〜0.030％，P：0.025％以下，S：0.025％以下，O：0.0010％以下，任意Mo：0.25％以下，B：0.0050％以下，Cu：1.0％以下，Ni：3.0％以下，Ca：0.0015％以下，剩余部分含有Fe和杂质; 金相结构包括残留奥氏体，球形渗碳体和马氏体; 残留奥氏体的量为15〜25％（体积％）。原奥氏体的平均粒径为8.0μm以下; 在金相结构中，圆当量直径为0.02μm〜3.0μm的空隙的数密度为2000mm -2以下。

6. 发明申请

US20160298225A1 A STEEL ALLOY AND A COMPONENT COMPRISING SUCH A STEEL ALLOY 审中-公开
标题翻译：钢合金和包含这种钢合金的组件
公开(公告)号：US20160298225A1
公开(公告)日：2016-10-13
申请号：US15100665
申请日：2014-11-28
申请人： Erasteel , Aubert & Duval
发明人： Johanna Olofsson , Fredrik Sandberg , M. Atman Benbahmed , Jacques Bellus
IPC分类号： C23C8/26 , C22C38/46 , C22C38/44 , C22C38/04 , C22C38/02 , F16C33/62 , C22C33/04 , C22C33/02 , C21D1/18 , B22F3/15 , C21D9/36 , B22F5/00 , C22C38/52 , C23C8/22
CPC分类号： C23C8/26 , B22F3/15 , B22F5/00 , B22F5/106 , B22F2998/10 , C21D1/06 , C21D1/18 , C21D9/36 , C21D9/40 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C21D2241/02 , C22C33/02 , C22C33/0278 , C22C33/04 , C22C38/02 , C22C38/04 , C22C38/44 , C22C38/46 , C22C38/52 , C23C8/22 , C23C8/32 , C23C8/80 , F16C33/62 , F16C2204/66 , B22F9/082
摘要： A carburisable steel alloy suitable for bearing components comprising, in percent by weight: C 0.05-0.5 wt. % Cr 2.5-5.0 wt. %, Mo 4-6 wt. %, W 2-4.5 wt. %, V 1 -3 wt. %, Ni 2-4 wt. %, Co 2-8 wt. %, optionally one or more of the following elements: Nb 0-2 wt. % N 0-0.5 wt. % Si 0-0.7 wt. %, Mn 0-0.7 wt. %, Al 0-0.1 5 wt. %, wherein the combined amount of Nb+V is within the range 1 -3.5 wt. %, the combined amount of C+N is within the range 0.05-0.5 wt. %, the balance being Fe and unavoidable impurities.
摘要翻译：适用于承载组分的可渗碳钢合金，其含量按重量百分比计：C 0.05-0.5％％Cr 2.5-5.0重量％％，Mo 4-6wt。％，W 2-4.5wt。％，V 1 -3wt。％，Ni 2-4wt。％，Co 2-8wt。％，任选地一种或多种以下元素：Nb 0-2wt。％N 0-0.5重量％％Si 0-0.7wt。％，Mn 0-0.7wt。％，Al 0-0.1 5wt。％，其中Nb + V的组合量在1-3.5重量％的范围内。％，C + N的组合量在0.05-0.5重量％的范围内。％，余量为Fe和不可避免的杂质。

7. 发明申请

US20160273587A1 BEARING STEEL 审中-公开
标题翻译：轴承钢
公开(公告)号：US20160273587A1
公开(公告)日：2016-09-22
申请号：US15070385
申请日：2016-03-15
申请人： John Beswick , Yves Maheo , Mohamed Sherif
发明人： John Beswick , Yves Maheo , Mohamed Sherif
IPC分类号： F16C33/62 , C22C38/52 , C22C38/48 , C22C38/42 , C22C38/00 , C22C38/46 , C22C38/04 , C22C38/02 , C22C38/06 , F16C33/64 , C22C38/44
CPC分类号： F16C33/62 , C21D1/06 , C21D6/004 , C21D9/36 , C21D9/40 , C21D2211/001 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/52 , C23C8/22 , C23C8/26 , C23C8/34 , C23F17/00 , F16C33/64 , F16C2204/72
摘要： A steel alloy for a bearing is provided. The alloy having a composition including from 0.04 to 0.1 wt. % carbon, from 11.5 to 13 wt. % chromium, from 1.5 to 3.5 wt. % molybdenum, from 0.3 to 0.8 wt. % vanadium, from 0.3 to 1.75 wt. % nickel from 6 to 9 wt. % cobalt, from 0.1 to 0.4 wt. % silicon, from 0.2 to 0.8 wt. % manganese, from 0 to 2 wt. % copper, from 0 to 0.05 wt. % niobium, from 0 to 0.1 wt. % aluminum, from 0 to 250 ppm nitrogen, from 0 to 30 ppm boron, and the balance iron, together with any unavoidable impurities.
摘要翻译：提供了一种用于轴承的钢合金。合金的组成为0.04〜0.1重量％％碳，11.5至13wt。％铬，1.5〜3.5wt。％钼，0.3〜0.8wt。％钒，0.3〜1.75wt。 6％至9％的镍。％钴，0.1〜0.4wt。％硅，0.2-0.8wt。％锰，0〜2重量％％铜，0〜0.05wt。％铌，0〜0.1wt。％铝，0至250ppm氮，0至30ppm硼，余量为铁，以及任何不可避免的杂质。

8. 发明授权

US09206490B2 Bearing part, rolling bearing, and methods of manufacturing them 有权
标题翻译：轴承部件，滚动轴承及其制造方法
公开(公告)号：US09206490B2
公开(公告)日：2015-12-08
申请号：US14363750
申请日：2012-12-07
申请人： Takashi Ueno , Chikara Ohki , Daisuke Sato , Kyouhei Kageyama , Shougo Shimizu
发明人： Takashi Ueno , Chikara Ohki , Daisuke Sato , Kyouhei Kageyama , Shougo Shimizu
IPC分类号： F16C33/62 , F16C33/76 , F16C33/38 , C21D9/36 , C21D9/40 , C21D1/06 , C22C38/00 , C22C38/18 , F16C33/32 , F16C33/64 , C22C38/02 , C22C38/04 , C21D1/18 , F16C33/78 , F16C33/42 , F16C33/80 , F16C43/04 , F16C19/06 , F16C19/30 , F16C43/06
CPC分类号： C21D9/36 , C21D1/06 , C21D1/18 , C21D9/40 , C21D2211/001 , C21D2211/008 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/18 , C23C8/32 , C23C8/80 , F16C19/06 , F16C19/30 , F16C33/32 , F16C33/3875 , F16C33/3887 , F16C33/427 , F16C33/585 , F16C33/62 , F16C33/64 , F16C33/7823 , F16C33/7843 , F16C33/7893 , F16C33/805 , F16C43/04 , F16C43/065 , F16C2202/04 , F16C2204/66 , F16C2208/36 , F16C2208/52 , F16C2208/60 , F16C2220/04 , F16C2223/16 , F16C2226/74 , F16C2240/06 , F16C2240/40 , F16C2240/94 , F16C2361/65
摘要： An outer ring, an inner ring, and a ball, each of which is a bearing part, are made of a quench-hardened steel containing not less than 0.90 mass % and not more than 1.05 mass % of carbon, not less than 0.15 mass % and not more than 0.35 mass % of silicon, not less than 0.01 mass % and not more than 0.50 mass % of manganese, and not less than 1.30 mass % and not more than 1.65 mass % of chromium with the rest consisting of an impurity. A contact surface thereof with another part has a nitrogen concentration of not less than 0.25 mass %. A remaining austenite amount in the contact surface is not less than 6 volume % and not more than 12 volume %.
摘要翻译：每个都是轴承部分的外圈，内圈和球均由淬火硬化钢制成，其含有不小于0.90质量％且不大于1.05质量％的碳，不小于0.15质量％％以上0.35质量％以下的锰，不低于0.01质量％且不大于0.50质量％的锰，不少于1.30质量％且不超过1.65质量％的铬，其余由杂质构成。其另一部分的接触表面的氮浓度不低于0.25质量％。接触表面中的剩余奥氏体量不小于6体积％且不大于12体积％。

9. 发明授权

US09169530B2 Rolled wire rod and manufacturing method thereof 有权
标题翻译：轧制线材及其制造方法
公开(公告)号：US09169530B2
公开(公告)日：2015-10-27
申请号：US14372168
申请日：2013-01-17
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Masashi Sakamoto , Junichi Kodama , Akira Nishida , Osamu Ooyama , Yuji Tomimasu , Kenichi Nakamura
IPC分类号： C21D8/06 , C21D9/573 , C21D9/36 , C21D9/52 , C22C38/32 , C22C38/22 , C22C38/04 , C22C38/02 , F16C33/32 , F16C33/34
CPC分类号： C21D9/36 , C21D8/06 , C21D8/065 , C21D9/525 , C21D2211/003 , C21D2211/009 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/22 , C22C38/32 , F16C33/32 , F16C33/34
摘要： A rolled wire rod includes, as a chemical component, by mass %, C: 0.95% to 1.10%, Si: 0.10% to 0.70%. Mn: 0.20% to 1.20%, and Cr: 0.90% to 1.60%, the balance consisting of Fe and unavoidable impurities, in which a metallographic structure of the rolled wire rod includes, by an area ratio, 90% to 100% of pearlite, 0% to 5% of proeutectoid cementite, and 0% to 10% of degenerate pearlite having granular cementite, an average size of a pearlite block of the pearlite is 1.0 μm to 15 μm, and a maximum size of the pearlite block is 1 to 4 times the average size.
摘要翻译：轧制线材以质量％计含有C：0.95％〜1.10％，Si：0.10％〜0.70％的化学成分。 Mn：0.20〜1.20％，Cr：0.90〜1.60％，余量由Fe和不可避免的杂质组成，其中轧制线材的金相组织包括90％-100％的珠光体的面积比，0％〜5％的先共析渗碳体，0〜10％的具有粒状渗碳体的退化珠光体，珠光体的珠光体块的平均粒径为1.0μm〜15μm，珠光体块的最大尺寸为1 至平均尺寸的4倍。

10. 发明授权

US09062355B2 Carbonitriding method, machinery component fabrication method, and machinery component 有权
标题翻译：碳氮共渗法，机械部件制造方法和机械部件
公开(公告)号：US09062355B2
公开(公告)日：2015-06-23
申请号：US12296054
申请日：2007-04-03
申请人： Chikara Ohki
发明人： Chikara Ohki
IPC分类号： C23C8/32 , C21D9/40 , C21D1/06 , C21D1/76 , C21D9/32 , C21D9/36 , C23C8/30 , C21D1/74 , C21D11/00
CPC分类号： C21D9/40 , C21D1/06 , C21D1/74 , C21D1/76 , C21D9/32 , C21D9/36 , C21D11/00 , C23C8/30 , C23C8/32 , F16C33/64
摘要： A carbonitriding method that can improve the nitrogen permeating rate to render the carbonitriding process effective includes an atmosphere control step, and a heating pattern control step. The atmosphere control step includes an undecomposed NH3 partial pressure control step, and a CO/CO2 partial pressure control step. The undecomposed NH3 partial pressure control step and the CO/CO2 partial pressure control step are carried out in the atmosphere control step such that ac* defined by the following equation (1) is at least 0.88 and not more than 1.27, and α defined by equation (2) is at least 0.012 and not more than 0.020, where PN is the undecomposed ammonia partial pressure and PH is the hydrogen partial pressure in the heat treatment furnace, wherein a c * = ( Pco ) 2 ⁢ K × Pco 2 ( 1 ) PCO: partial pressure of carbon monoxide (atm), PCO2: partial pressure of carbon dioxide (atm) K: equilibrium constant at +CO2 2CO α = P N 0.006 × ( P H ) 3 2 × ( 1.877 - 1.055 × a c * ) 100 . ( 2 )
摘要翻译：可以提高氮渗透速度使碳氮共渗工艺有效的碳氮共渗方法包括气氛控制步骤和加热模式控制步骤。气氛控制步骤包括未分解的NH 3分压控制步骤和CO / CO 2分压控制步骤。未分解的NH 3分压控制步骤和CO / CO 2分压控制步骤在气氛控制步骤中进行，使得由下式（1）定义的ac *为至少0.88且不大于1.27，α由式（2）为0.012且不大于0.020，其中PN为未分解的氨分压，PH为热处理炉中的氢分压，其中ac * =（Pco）2 K×Pco 2（1 ）PCO：一氧化碳分压（atm），PCO2：二氧化碳分压（atm）K：CO 2 + CO 2的平衡常数2COα= PN 0.006×（PH）3 2×（1.877-1.055×ac *）100。（2）

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