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11. 发明申请

US20120018063A1 CASE-HARDENED STEEL SUPERIORIN COLD WORKABILITY, MACHINABILITY, AND FATIGUE CHARACTERISTICS AFTER CARBURIZED QUENCHING AND METHOD OF PRODUCTION OF SAME 审中-公开
标题翻译：加固淬火后的硬化钢超高温冷加工性，机械性能和疲劳特性及其生产方法
公开(公告)号：US20120018063A1
公开(公告)日：2012-01-26
申请号：US13138837
申请日：2009-10-14
申请人： Masayuki Hashimura , Kei Miyanishi , Shuji Kozawa , Manabu Kubota , Tatsuro Ochi
发明人： Masayuki Hashimura , Kei Miyanishi , Shuji Kozawa , Manabu Kubota , Tatsuro Ochi
IPC分类号： C21D8/00 , C22C38/38 , C22C38/26 , C22C38/22 , C22C38/58 , C22C38/32 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54 , C22C38/28 , C22C38/24
CPC分类号： C21D1/06 , C21D8/0226 , C22C1/002 , C22C1/02 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/46 , C22C38/48 , C23C8/32 , C23C8/80
摘要： Cold worked, machined, and carburized quenched case-hardened steel prevented from formation of coarse grains, that is, case-hardened steel superior in cold workability, machinability, and fatigue characteristics after carburized quenching characterized by limiting, by mass %, S: 0.001 to 0.15%, Ti: 0.05 to 0.2%, Al: 0.04% or less, and N: 0.0050% or less, containing other specific ingredients in specific ranges, furthermore containing one or more of Mg: 0.003% or less, Zr: 0.01% or less, and Ca: 0.005% or less, limiting the amount of precipitation of AlN to 0.01% or less, and having a density d (/mm2) of sulfides with a equivalent circle diameter of over 20 μm and an aspect ratio of over 3 and a content of S [S] (mass %) satisfying d≦1700[S]+20.
摘要翻译：冷加工，机加工和渗碳淬火的硬化钢防止形成粗晶粒，即在渗碳淬火后的冷加工性，机械加工性和疲劳特性优异的表面硬化钢，其特征在于以质量％S：0.001 至0.15％，Ti：0.05〜0.2％，Al：0.04％以下，N：0.0050％以下，含有特定范围的其他特定成分，进一步含有Mg：0.003％以下，Zr：0.01 ％以下，Ca：0.005％以下，将AlN的析出量限制在0.01％以下，并且具有当量圆直径大于20μm的硫化物的密度d（/ mm2），纵横比 3以上，S [S]（质量％）的含量满足d＆nlE; 1700 [S] +20。

12. 发明授权

US09657379B2 Forging steel 有权
公开(公告)号：US09657379B2
公开(公告)日：2017-05-23
申请号：US12312010
申请日：2008-04-10
申请人： Hajime Saitoh , Tatsuro Ochi , Masayuki Hashimura
发明人： Hajime Saitoh , Tatsuro Ochi , Masayuki Hashimura
IPC分类号： C22C38/22 , C22C38/14 , C22C38/08 , C22C38/06 , C22C38/04 , C21D1/06 , C21D8/06
CPC分类号： C22C38/04 , C21D1/06 , C21D8/06 , C22C38/06
摘要： This invention provides a forging steel excellent in forgeability, which forging steel comprises, in mass %, C: 0.001 to less than 0.07%, Si: 3.0% or less, Mn: 0.01 to 4.0%, Cr: 5.0% or less, P: 0.2% or less, S: 0.35% or less, Al: 0.0001 to 2.0%, N: 0.03% or less, one or both of Mo: 1.5% or less (including 0%) and Ni: 4.5% or less (including 0%), and a balance of iron and unavoidable impurities; wherein Di given by the following Equation (1) is 60 or greater: Di=5.41×Di(Si)×Di(Mn)×Di(Cr)×Di(Mo)×Di(Ni)×Di(Al) (1)

13. 发明授权

US08980022B2 Case hardening steel, carburized component, and manufacturing method of case hardening steel 有权
标题翻译：表面硬化钢，渗碳部件和表面硬化钢的制造方法
公开(公告)号：US08980022B2
公开(公告)日：2015-03-17
申请号：US13061023
申请日：2010-01-13
申请人： Kei Miyanishi , Masayuki Hashimura , Shuuji Kozawa , Manabu Kubota , Tatsuro Ochi
发明人： Kei Miyanishi , Masayuki Hashimura , Shuuji Kozawa , Manabu Kubota , Tatsuro Ochi
IPC分类号： C21D9/52 , C21D8/02 , C21D9/00 , C22C38/08 , C22C38/44 , C22C38/22 , C22C38/00 , C23C8/32 , C23C8/26 , C23C8/30 , C23C8/24 , C23C8/20 , C22C38/02 , B21J1/02 , C21D6/00 , C21D9/32 , C21D9/36 , C21D9/38 , C21D9/40 , C22C38/04 , C22C38/06 , C22C38/28 , F16C33/62 , C21D1/32 , C21D1/58
CPC分类号： C22C38/02 , B21J1/02 , C21D1/32 , C21D1/58 , C21D6/002 , C21D8/0205 , C21D8/0226 , C21D8/0257 , C21D9/32 , C21D9/36 , C21D9/38 , C21D9/40 , C21D2211/004 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/06 , C22C38/28 , F16C33/62
摘要： This case hardening steel has a chemical composition including, by mass %: C: 0.1 to 0.6%; Si: 0.02 to 1.5%; Mn: 0.3 to 1.8%; P: 0.025% or less; S: 0.001 to 0.15%; Al: over 0.05 to 1.0%; Ti: 0.05 to 0.2%; N: 0.01% or less; and O: 0.0025% or less, and further including, by mass %, one or more of Cr: 0.4 to 2.0%, Mo: 0.02 to 1.5%, Ni: 0.1 to 3.5%, V: 0.02 to 0.5%, and B: 0.0002 to 0.005%, and the balance consisting of iron and unavoidable impurities.
摘要翻译：该硬化钢的化学成分按质量％计含有：C：0.1〜0.6％ Si：0.02〜1.5％ Mn：0.3〜1.8％ P：0.025％以下; S：0.001〜0.15％ Al：0.05〜1.0％ Ti：0.05〜0.2％ N：0.01％以下和O：0.0025％以下，进一步包括Cr：0.4〜2.0％，Mo：0.02〜1.5％，Ni：0.1〜3.5％，V：0.02〜0.5％中的一种或多种，B：：0.0002〜0.005％，余量由铁和不可避免的杂质组成。

14. 发明申请

US20130048156A1 CASE HARDENING STEEL AND MANUFACTURING METHOD THEREOF 有权
标题翻译：案例硬化钢及其制造方法
公开(公告)号：US20130048156A1
公开(公告)日：2013-02-28
申请号：US13696714
申请日：2011-10-05
申请人： Masayuki Hashimura , Kei Miyanishi , Shuji Kozawa , Manabu Kubota , Tatsuro Ochi
发明人： Masayuki Hashimura , Kei Miyanishi , Shuji Kozawa , Manabu Kubota , Tatsuro Ochi
IPC分类号： C22C38/28 , C22C38/58 , C22C38/38 , C22C38/50 , C21D8/00 , C22C38/32
CPC分类号： C22C38/00 , C21D1/18 , C21D9/28 , C21D9/32 , C21D9/40 , C21D2211/002 , C21D2211/004 , C21D2261/00 , C22C38/02 , C22C38/04 , C22C38/28 , C23C8/22
摘要： A case hardening steel includes by mass %, C: 0.1% to 0.5%, Si: 0.01% to 1.5%, Mn: 0.3% to 1.8%, S: 0.001% to 0.15%, Cr: 0.4% to 2.0%, Ti: 0.05% to 0.2%, Al: limited to 0.2% or less, N: limited to 0.0050% or less, P: limited to 0.025% or less, O: limited to 0.0025% or less, and the balance of Fe and inevitable impurities, wherein the number d of sulfide having an equivalent circle diameter more than 5 μm per 1 mm2 and a mass percentage [S] of S satisfy: d 500×[S]+1.
摘要翻译：表面硬化钢以质量％计含有C：0.1〜0.5％，Si：0.01〜1.5％，Mn：0.3〜1.8％，S：0.001〜0.15％，Cr：0.4〜2.0％，Ti ：0.05〜0.2％，Al：0.2％以下，N：0.0050％以下，P：0.025％以下，O：0.0025％以下，余量为Fe 杂质，其中当量圆直径大于5μm/ 1mm 2的硫化物的数量d和S的质量百分比[S]满足：d 500×[S] +1。

15. 发明申请

US20100047106A1 Forging steel 有权
标题翻译：锻钢
公开(公告)号：US20100047106A1
公开(公告)日：2010-02-25
申请号：US12312010
申请日：2008-04-10
申请人： Hajime Saitoh , Tatsuro Ochi , Masayuki Hashimura
发明人： Hajime Saitoh , Tatsuro Ochi , Masayuki Hashimura
IPC分类号： C22C38/46 , C22C38/00 , C22C38/60 , C22C38/42 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/40 , C22C38/18 , C22C38/04
CPC分类号： C22C38/04 , C21D1/06 , C21D8/06 , C22C38/06
摘要： This invention provides a forging steel excellent in forgeability, which forging steel comprises, in mass %, C: 0.001 to less than 0.07%, Si: 3.0% or less, Mn: 0.01 to 4.0%, Cr: 5.0% or less, P: 0.2% or less, S: 0.35% or less, Al: 0.0001 to 2.0%, N: 0.03% or less, one or both of Mo: 1.5% or less (including 0%) and Ni: 4.5% or less (including 0%), and a balance of iron and unavoidable impurities; wherein Di given by the following Equation (1) is 60 or greater: Di=5.41×Di(Si)×Di(Mn)×Di(Cr)×Di(Mo)×Di(Ni)×Di(Al) (1)
摘要翻译：本发明提供锻造性优异的锻钢，锻造钢以质量％计含有C：0.001〜小于0.07％，Si：3.0％以下，Mn：0.01〜4.0％，Cr：5.0％以下，P ：0.2％以下，S：0.35％以下，Al：0.0001〜2.0％，N：0.03％以下，Mo：1.5％以下（含0％）和Ni：4.5％以下包括0％），余量为铁和不可避免的杂质; （1）给出的Di为60以上：Di = 5.41×Di（Si）×Di（Mn）×Di（Cr）×Di（Mo）×Di（Ni）×Di（Al））

16. 发明授权

US06338763B1 Steel wire for high-strength springs and method of producing the same 有权
标题翻译：高强度弹簧用钢丝及其制造方法
公开(公告)号：US06338763B1
公开(公告)日：2002-01-15
申请号：US09407103
申请日：1999-09-27
申请人： Masayuki Hashimura , Hiroshi Hagiwara , Takanari Miyaki , Hiroaki Hayashi , Shoichi Suzuki , Ikuo Ochiai
发明人： Masayuki Hashimura , Hiroshi Hagiwara , Takanari Miyaki , Hiroaki Hayashi , Shoichi Suzuki , Ikuo Ochiai
IPC分类号： C21D902
CPC分类号： C22C38/34 , C21D1/18 , C21D9/525 , C22C38/06 , C22C38/44 , C22C38/46 , Y10S148/908
摘要： This invention provides an oil-tempered wire having high strength (tensile strength of not less than 1960 MPa) and excellent workability and specifically provides a steel wire for high-strength springs comprising as steel components, in weight percent, C 0.4-0.7% Si 1.2-2.5% Mn 0.1-0.5% Cr 0.4-2.0% Al 0.0001-0.005%, and being limited to P not more than 0.015% and S not more than 0.015%, the balance being Fe and unavoidable impurities, the steel wire having no nonmetallic inclusions of a size greater than 15 &mgr;m, a tensile strength of not less than 1960 MPa, and a yield ratio (&sgr;0.2/&sgr;B) of not less than 0.8 and not greater than 0.9 or a yield ratio (&sgr;0.2/&sgr;B) of not less than 0.8 and an amount of residual austenite of not greater than 6%. This invention also provides a method of producing the steel wire.
摘要翻译：本发明提供一种具有高强度（抗拉强度不低于1960MPa）和优异的加工性的油回火丝，具体提供了一种用于高强度弹簧的钢丝，其包括重量百分比，余量为Fe和不可避免的钢组分杂质，钢丝不具有大于15μm的非金属夹杂物，拉伸强度不小于1960MPa，屈服比（σ0.2/σB）不小于0.8且不大于0.9或不大于0.9 屈服比（σ0.2/σB）不小于0.8，残余奥氏体量不大于6％。本发明还提供一种钢丝的制造方法。

17. 发明申请

US20090050241A1 Steel superior in machinability and method of production of same 有权
标题翻译：钢的机械加工性及其制造方法优越
公开(公告)号：US20090050241A1
公开(公告)日：2009-02-26
申请号：US12288542
申请日：2008-10-20
申请人： Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
发明人： Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
IPC分类号： C21D6/00
CPC分类号： C22C38/001 , C21D2211/005 , C21D2211/009 , C22C38/002 , C22C38/04 , C22C38/60
摘要： The present invention provides steel superior in machinability comprised of, by wt %, C: 0.005 to 0.2%, Si: 0.001 to 0.5%, Mn: 0.2 to 3.0%, P: 0.001 to 0.2%, S: 0.03 to 1.0%, T.N: 0.002 to 0.02%, T.O: 0.0005 to 0.035%, and the balance of Fe and unavoidable impurities, said steel satisfying one or both of Mn/S in the steel being 1.2 to 2.8 or an area ratio of pearlite over a grain size of 1 μm in a microstructure of the steel being not more than 5%.
摘要翻译：本发明提供了以C：0.005〜0.2％，Si：0.001〜0.5％，Mn：0.2〜3.0％，P：0.001〜0.2％，S：0.03〜1.0％，重量％ TN：0.002〜0.02％，TO：0.0005〜0.035％，余量由Fe和不可避免的杂质构成，所述钢满足钢中Mn / S的一种或两种或1.2或2.8，或珠光体的晶粒面积比 1微米的钢的微观结构不大于5％。

18. 发明授权

US06406565B1 High toughness spring steel 有权
标题翻译：高韧性弹簧钢
公开(公告)号：US06406565B1
公开(公告)日：2002-06-18
申请号：US09686032
申请日：2000-10-11
申请人： Masayuki Hashimura , Hiroshi Hagiwara , Takanari Miyaki , Toshio Banno
发明人： Masayuki Hashimura , Hiroshi Hagiwara , Takanari Miyaki , Toshio Banno
IPC分类号： C22C3828
CPC分类号： C21D9/02 , C21D1/18 , C22C38/001 , C22C38/04 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54 , Y10S148/908
摘要： The present invention provides a spring steel showing a sufficient reduction in area and an impact toughness while the steel has a high strength, in particular a tensile strength as high as at least 1,500 Mpa. A high toughness spring steel according to the present invention comprises, based on mass, 0.45 to 0.85% of C, 0.9 to 2.5% of Si, 0.1 to 1.2% of Mn, 0.1 to 2.0% of Cr, 0.005 to 0.07% of Ti, 0.001 to 0.007% of N, the Ti content being greater than four times the N content in terms of percent by mass, 0.0005 to 0.0060% B, at least one of 0.0005 to 0.01% Mg, 0.0005 to 0.01% La, and 0.0005 to 0.01% Ce, P and S with restrictive contents of less than 0.020% and less than 0.020%, respectively, and the balance of Fe and unavoidable impurities, and selectively contains V, Nb, Ni, Mo and Cu. The percent area of oxides and sulfides is not more than 0.1%.
摘要翻译：本发明提供了一种弹簧钢，其具有足够的面积减小和冲击韧性，而钢具有高强度，特别是高达至少1,500Mpa的拉伸强度。根据本发明的高韧性弹簧钢，以质量计含有C：0.45〜0.85％，Si：0.9〜2.5％，Mn：0.1〜1.2％，Cr：0.1〜2.0％，Ti：0.005〜0.07％，0.001〜0.007％的N，Ti含量大于N含量的四倍，按质量百分比计，0.0005〜0.0060％B，0.0005〜0.01％的Mg，0.0005〜0.01％的La和0.0005 至0.01％的Ce，P和S，其限制含量分别小于0.020％且小于0.020％，余量为Fe和不可避免的杂质，并选择性地含有V，Nb，Ni，Mo和Cu。氧化物和硫化物的面积百分比不超过0.1％。

19. 发明授权

US07575646B2 Heat-treated steel wire for high strength spring 有权
标题翻译：用于高强度弹簧的热处理钢丝
公开(公告)号：US07575646B2
公开(公告)日：2009-08-18
申请号：US10467493
申请日：2002-02-07
申请人： Masayuki Hashimura , Takanari Miyaki , Hiroshi Hagiwara , Hiroaki Hayashi , Shouich Suzuki , Katsuaki Shiiki , Noriyuki Yamada , Seiichi Koike
发明人： Masayuki Hashimura , Takanari Miyaki , Hiroshi Hagiwara , Hiroaki Hayashi , Shouich Suzuki , Katsuaki Shiiki , Noriyuki Yamada , Seiichi Koike
IPC分类号： C22C38/22
CPC分类号： C22C38/24 , C21D6/008 , C21D9/02 , C22C38/04 , C22C38/22 , C22C38/34
摘要： The present invention provides a steel wire, for springs excellent in coiling property while having a high strength, as a heat treated steel wire for high strength springs, characterized by: comprising, in mass, C: 0.75 to 0.85%, Si: 1.5 to 2.5%, Mn: 0.5 to 1.0%, Cr: 0.3 to 1.0%, P: not more than 0.015%, S: not more than 0.015%, N: 0.001 to 0.007%, W: 0.05 to 0.3%, and the balance consisting of Fe and unavoidable impurities; having a tensile strength of not less than 2,000 MPa; spheroidal carbides, composed of mainly cementite, observed in a microscopic visual field satisfying the area percentage of the spheroidal carbides not less than 0.2 μm in circle equivalent diameter being not more than 7%, the density of the spheroidal carbides 0.2 to 3 μm in circle equivalent diameter being not more than 1 piece/μm2, and the density of the spheroidal carbides over 3 μm in circle equivalent diameter being not more than 0.001 piece/μm2; the prior austenite grain size number being #10 or larger; the content of the retained austenite being not more than 12 mass %; the maximum diameter of carbides being not more than 15 μm; and the maximum diameter of oxides being not more than 15 μm.
摘要翻译：本发明提供一种用于高强度弹簧的热处理钢丝，具有高强度卷取性能优异的弹簧钢丝，其特征在于：以质量计含有C：0.75〜0.85％，Si：1.5〜 2.5％，Mn：0.5〜1.0％，Cr：0.3〜1.0％，P：不大于0.015％，S：不大于0.015％，N：0.001〜0.007％，W：0.05〜0.3％由Fe和不可避免的杂质组成; 拉伸强度不小于2000MPa; 球形碳化物主要由渗碳体组成，在满足圆形当量直径不小于0.2μm的球状碳化物的面积百分比的微观视野内观察不超过7％，球形碳化物的密度为0.2-3μm圆当量直径不大于1件/ mum2，圆形当量直径3毫米以上的球状碳化物的密度不大于0.001件/ mum2; 原奥氏体晶粒数为＃10以上; 残留奥氏体的含量不超过12质量％; 碳化物的最大直径不大于15μm; 氧化物的最大直径不大于15μm。

20. 发明授权

US07488396B2 Superior in machinability and method of production of same 有权
标题翻译：优良的加工性和生产方法
公开(公告)号：US07488396B2
公开(公告)日：2009-02-10
申请号：US10534858
申请日：2003-11-14
申请人： Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
发明人： Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
IPC分类号： C22C38/60 , C22C38/02 , C22C38/04
CPC分类号： C22C38/001 , C21D2211/005 , C21D2211/009 , C22C38/002 , C22C38/04 , C22C38/60
摘要： The present invention provides steel superior in machinability comprised of, by wt %, C: 0.005 to 0.2%, Si: 0.001 to 0.5%, Mn: 0.2 to 3.0%, P: 0.001 to 0.2%, S: 0.03 to 1.0%, T.N: 0.002 to 0.02%, T.O: 0.0005 to 0.035%, and the balance of Fe and unavoidable impurities, said steel satisfying one or both of Mn/S in the steel being 1.2 to 2.8 or an area ratio of pearlite over a grain size of 1 μm in a microstructure of the steel being not more than 5%.
摘要翻译：本发明提供了以C：0.005〜0.2％，Si：0.001〜0.5％，Mn：0.2〜3.0％，P：0.001〜0.2％，S：0.03〜1.0％，重量％ TN：0.002〜0.02％，TO：0.0005〜0.035％，余量由Fe和不可避免的杂质构成，所述钢满足钢中Mn / S的一种或两种或1.2或2.8，或珠光体的晶粒面积比 1微米的钢的微观结构不大于5％。

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