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1. 发明授权

US07510614B2 High strength bolt excellent in delayed fracture resistance and method of production of same 有权
$High strength bolt excellent in delayed fracture resistance and method of production of same$
标题翻译：耐久性优异的高强度螺栓及其制造方法
公开(公告)号：US07510614B2
公开(公告)日：2009-03-31
申请号：US11490975
申请日：2006-07-21
申请人： Suguru Yoshida , Toshimi Tarui , Manabu Kubota , Hideki Matsuda , Tadashi Ohya , Koki Mizuno
发明人： Suguru Yoshida , Toshimi Tarui , Manabu Kubota , Hideki Matsuda , Tadashi Ohya , Koki Mizuno
IPC分类号： C22C28/02 , C22C38/04 , C22C38/06 , C21D8/00
CPC分类号： B21K1/46 , B21H3/02 , C22C38/02 , C22C38/04 , C22C38/12 , F16B35/00
摘要： The present invention provides a high strength bolt excellent in delayed fracture resistance able to advantageously prevent hydrogen embrittlement as represented by the delayed fracture phenomenon occurring along with an increase in strength and causing a particular problem, and a method of production of the same, containing, by mass %, C: 0.2 to 0.6%, Si: 0.05 to 0.5%, Mn: 0.1 to 2%, Mo: 0.5 to 6%, and Al: 0.005 to 0.5%, having a tensile strength of 1400 MPa or more, and having a compressive residual stress of the surface layer of the thread root of 10 to 90% of the tensile strength. Further, a surface layer part of the thread root from the surface down to at least 50 μm has pre-austenite grains with an aspect ratio of the axial direction and radial direction of 2 or more and that part has a hardness of Hv 460 or more. Further, the method of production comprises using the steel material having the above ingredients to shape the bolt head and shaft, then heat the bolt to 900 to 1100° C., quench it, temper it by a 580° C. or higher temperature, then thread roll it.
摘要翻译：本发明提供了一种具有优异的延迟断裂抵抗性的高强度螺栓，其能够有利地防止随着强度的增加而发生的延迟断裂现象所引起的氢脆化，并引起特定问题，及其制造方法，以下，拉伸强度为1400MPa以上，C：0.2〜0.6％，Si：0.05〜0.5％，Mn：0.1〜2％，Mo：0.5〜6％，Al：0.005〜并且具有螺纹根表面层的抗拉强度的10〜90％的压缩残余应力。此外，从表面向下至至少50μm的螺纹根部的表面层部分具有轴向和径向的纵横比为2以上的预奥氏体晶粒，并且该部分的硬度为Hv 460以上。此外，生产方法包括使用具有上述成分的钢材来成形螺栓头和轴，然后将螺栓加热至900至1100℃，淬火，回火580℃或更高的温度，然后卷起它。

2. 发明申请

US20070017610A1 High strength bolt excellent in delayed fracture resistance and method of production of same 有权
$High strength bolt excellent in delayed fracture resistance and method of production of same$
标题翻译：耐久性优异的高强度螺栓及其制造方法
公开(公告)号：US20070017610A1
公开(公告)日：2007-01-25
申请号：US11490975
申请日：2006-07-21
申请人： Suguru Yoshida , Toshimi Tarui , Manabu Kubota , Hideki Matsuda , Tadashi Ohya , Koki Mizuno
发明人： Suguru Yoshida , Toshimi Tarui , Manabu Kubota , Hideki Matsuda , Tadashi Ohya , Koki Mizuno
IPC分类号： C22C38/12
CPC分类号： B21K1/46 , B21H3/02 , C22C38/02 , C22C38/04 , C22C38/12 , F16B35/00
摘要： The present invention provides a high strength bolt excellent in delayed fracture resistance able to advantageously prevent hydrogen embrittlement as represented by the delayed fracture phenomenon occurring along with an increase in strength and causing a particular problem, and a method of production of the same, containing, by mass %, C: 0.2 to 0.6%, Si: 0.05 to 0.5%, Mn: 0.1 to 2%, Mo: 0.5 to 6%, and Al: 0.005 to 0.5%, having a tensile strength of 1400 MPa or more, and having a compressive residual stress of the surface layer of the thread root of 10 to 90% of the tensile strength. Further, a surface layer part of the thread root from the surface down to at least 50 μm has pre-austenite grains with an aspect ratio of the axial direction and radial direction of 2 or more and that part has a hardness of Hv 460 or more. Further, the method of production comprises using the steel material having the above ingredients to shape the bolt head and shaft, then heat the bolt to 900 to 1100° C., quench it, temper it by a 580° C. or higher temperature, then thread roll it.
摘要翻译：本发明提供了一种具有优异的延迟断裂性的高强度螺栓，其能够有利地防止随着强度的增加而发生的延迟断裂现象所引起的氢脆化，并引起特定问题，及其制备方法，以下，拉伸强度为1400MPa以上，C：0.2〜0.6％，Si：0.05〜0.5％，Mn：0.1〜2％，Mo：0.5〜6％，Al：0.005〜并且具有螺纹根表面层的抗拉强度的10〜90％的压缩残余应力。此外，从表面向下至至少50μm的螺纹根部的表面层部分具有轴向和径向的纵横比为2以上的预奥氏体晶粒，并且该部分的硬度为Hv 460以上。此外，生产方法包括使用具有上述成分的钢材来成形螺栓头和轴，然后将螺栓加热至900至1100℃，淬火，回火580℃或更高的温度，然后卷起它。

3. 发明授权

US07754029B2 Steel with excellent delayed fracture resistance and tensile strength of 1801 MPa class or more, and its shaped article 有权
$Steel with excellent delayed fracture resistance and tensile strength of 1801 MPa class or more, and its shaped article$
标题翻译：具有优异的延迟断裂韧性和1801MPa级以上抗拉强度的钢及其成型制品
公开(公告)号：US07754029B2
公开(公告)日：2010-07-13
申请号：US11490955
申请日：2006-07-21
申请人： Manabu Kubota , Suguru Yoshida , Toshimi Tarui , Hideki Matsuda , Koki Mizuno , Tadashi Ohya
发明人： Manabu Kubota , Suguru Yoshida , Toshimi Tarui , Hideki Matsuda , Koki Mizuno , Tadashi Ohya
IPC分类号： C22C38/12 , C22C38/16 , C22C38/04 , C22C38/06
CPC分类号： C22C38/02 , C21D1/18 , C21D9/0093 , C22C38/04 , C22C38/12 , F16B35/00
摘要： Steel and steel shaped articles with an excellent delayed fracture resistance and a tensile strength of the 1600 MPa class or more, containing, by mass %, C: 0.20 to 0.60%, Si: 0.50% or less, Mn: over 0.10% to 3%, Al: 0.005 to 0.1%, Mo: over 3.0% to 10%, and, as needed, one or more of W: 0.01 to 10%, V: 0.05 to 1%, Ti: 0.01 to 1%, Nb: 0.01 to 1%, Cr: 0.10 to 2%, Ni: 0.05 to 1%, Cu: 0.05 to 0.5%, and B: 0.0003 to 0.01%, and a balance of Fe and unavoidable impurities and, further, a method of production comprising shaping the above steel to a desired shape (for example, a bolt shape), quenching it, then tempering it at 500 to 750° C. in temperature range.
摘要翻译：具有优异的延迟抗断裂性和1600MPa级以上的抗拉强度的钢和钢制品，以质量％计含有C：0.20〜0.60％，Si：0.50％以下，Mn：超过0.10％〜3％％，Al：0.005〜0.1％，Mo：3.0％〜10％，W：0.01〜10％，V：0.05〜1％，Ti：0.01〜1％，Nb： 0.01〜1％，Cr：0.10〜2％，Ni：0.05〜1％，Cu：0.05〜0.5％，B：0.0003〜0.01％，余量由Fe和不可避免的杂质构成，包括将上述钢成形为期望的形状（例如螺栓形状），淬火，然后在温度范围内在500-750℃下回火。

4. 发明申请

US20070017609A1 Steel with excellent delayed fracture resistance and tensile strength of 1600 MPa class or more, its shaped articles, and methods of production of the same 有权
$Steel with excellent delayed fracture resistance and tensile strength of 1600 MPa class or more, its shaped articles, and methods of production of the same$
标题翻译：具有优异的延迟断裂韧性和1600MPa级以上的拉伸强度的钢，其成型制品及其制造方法
公开(公告)号：US20070017609A1
公开(公告)日：2007-01-25
申请号：US11490955
申请日：2006-07-21
申请人： Manabu Kubota , Suguru Yoshida , Toshimi Tarui , Hideki Matsuda , Koki Mizuno , Tadashi Ohya
发明人： Manabu Kubota , Suguru Yoshida , Toshimi Tarui , Hideki Matsuda , Koki Mizuno , Tadashi Ohya
IPC分类号： C22C38/12
CPC分类号： C22C38/02 , C21D1/18 , C21D9/0093 , C22C38/04 , C22C38/12 , F16B35/00
摘要： Steel and steel shaped articles with an excellent delayed fracture resistance and a tensile strength of the 1600 MPa class or more, containing, by mass %, C: 0.20 to 0.60%, Si: 0.50% or less, Mn: over 0.10% to 3%, Al: 0.005 to 0.1%, Mo: over 3.0% to 10%, and, as needed, one or more of W: 0.01 to 10%, V: 0.05 to 1%, Ti: 0.01 to 1%, Nb: 0.01 to 1%, Cr: 0.10 to 2%, Ni: 0.05 to 1%, Cu: 0.05 to 0.5%, and B: 0.0003 to 0.01%, and a balance of Fe and unavoidable impurities and, further, a method of production comprising shaping the above steel to a desired shape (for example, a bolt shape), quenching it, then tempering it at 500 to 750° C. in temperature range.
摘要翻译：具有优异的延迟抗断裂性和1600MPa级以上的抗拉强度的钢和钢制品，以质量％计含有C：0.20〜0.60％，Si：0.50％以下，Mn：超过0.10％〜3％％，Al：0.005〜0.1％，Mo：3.0％〜10％，W：0.01〜10％，V：0.05〜1％，Ti：0.01〜1％，Nb： 0.01〜1％，Cr：0.10〜2％，Ni：0.05〜1％，Cu：0.05〜0.5％，B：0.0003〜0.01％，余量由Fe和不可避免的杂质构成，包括将上述钢成形为期望的形状（例如螺栓形状），淬火，然后在温度范围内在500-750℃下回火。

5. 发明申请

US20130087250A1 STEEL FOR NITRIDING AND NITRIDED PART 有权
标题翻译：用于硝化和硝化部分的钢
公开(公告)号：US20130087250A1
公开(公告)日：2013-04-11
申请号：US13702285
申请日：2011-11-17
申请人： Tetsushi Chida , Manabu Kubota , Toshimi Tarui , Daisuke Hirakami , Masayuki Hashimura
发明人： Tetsushi Chida , Manabu Kubota , Toshimi Tarui , Daisuke Hirakami , Masayuki Hashimura
IPC分类号： C22C38/38 , C22C38/24 , C21D1/06 , C22C38/32
CPC分类号： C22C38/38 , C21D1/06 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/32 , C23C8/32
摘要： The present invention provides a steel for nitriding with a composition including, by mass %: C: 0.10% to 0.20%; Si: 0.01% to 0.7%; Mn: 0.2% to 2.0%; Cr: 0.2% to 2.5%; Al: 0.01% to less than 0.19%; V: over 0.2% to 1.0%; Mo: 0% to 0.54%; N: 0.001% to 0.01%; P limited to not more than 0.05%; S limited to not less than 0.2%; and a balance including Fe and inevitable impurities, the composition satisfying 2≦[V]/[C]≦10, where [V] is an amount of V by mass % and [C] is an amount of C by mass %, in which the steel for nitriding has a microstructure containing bainite of 50% or more in terms of an area percentage.
摘要翻译：本发明提供一种氮化组成的钢，其含有质量％：C：0.10〜0.20％ Si：0.01〜0.7％ Mn：0.2〜2.0％ Cr：0.2〜2.5％ Al：0.01％〜小于0.19％; V：超过0.2％至1.0％; Mo：0〜0.54％ N：0.001〜0.01％ P限制在不超过0.05％; S限制在0.2％以上; 余量包括Fe和不可避免的杂质，组成满足2＆nlE; [V] / [C]＆nlE; 10，其中[V]为质量％V，[C]为质量％其中用于氮化的钢具有以面积百分比计含有贝氏体为50％以上的微结构。

6. 发明授权

US08876988B2 Steel for nitriding and nitrided part 有权
标题翻译：用于氮化和氮化部分的钢
公开(公告)号：US08876988B2
公开(公告)日：2014-11-04
申请号：US13702285
申请日：2011-11-17
申请人： Tetsushi Chida , Manabu Kubota , Toshimi Tarui , Daisuke Hirakami , Masayuki Hashimura
发明人： Tetsushi Chida , Manabu Kubota , Toshimi Tarui , Daisuke Hirakami , Masayuki Hashimura
IPC分类号： C22C38/38 , C22C38/24 , C21D1/06 , C22C38/32
CPC分类号： C22C38/38 , C21D1/06 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/32 , C23C8/32
摘要： The present invention provides a steel for nitriding with a composition including, by mass %: C: 0.10% to 0.20%; Si: 0.01% to 0.7%; Mn: 0.2% to 2.0%; Cr: 0.2% to 2.5%; Al: 0.01% to less than 0.19%; V: over 0.2% to 1.0%; Mo: 0% to 0.54%; N: 0.001% to 0.01%; P limited to not more than 0.05%; S limited to not less than 0.2%; and a balance including Fe and inevitable impurities, the composition satisfying 2≦[V]/[C]≦10, where [V] is an amount of V by mass % and [C] is an amount of C by mass %, in which the steel for nitriding has a microstructure containing bainite of 50% or more in terms of an area percentage.
摘要翻译：本发明提供一种氮化组成的钢，其含有质量％：C：0.10〜0.20％ Si：0.01〜0.7％ Mn：0.2〜2.0％ Cr：0.2〜2.5％ Al：0.01％〜小于0.19％; V：超过0.2％至1.0％; Mo：0〜0.54％ N：0.001〜0.01％ P限制在不超过0.05％; S限制在0.2％以上; 余量包括Fe和不可避免的杂质，组成满足2＆nlE; [V] / [C]＆nlE; 10，其中[V]为质量％V，[C]为质量％其中用于氮化的钢具有以面积百分比计含有贝氏体为50％以上的微结构。

7. 发明申请

US20110186182A1 STEEL FOR NITROCARBURIZING AND NITROCARBURIZED PARTS 审中-公开
标题翻译：用于硝化和硝化部件的钢
公开(公告)号：US20110186182A1
公开(公告)日：2011-08-04
申请号：US12735802
申请日：2009-10-19
申请人： Tetsushi Chida , Manabu Kubota , Toshimi Tarui , Daisuke Hirakami
发明人： Tetsushi Chida , Manabu Kubota , Toshimi Tarui , Daisuke Hirakami
IPC分类号： B32B15/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/26
CPC分类号： B32B15/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28
摘要： The present invention relates to a steel material giving more effective case hardening for improving the fatigue strength and is characterized by containing, by mass %, C: 0.01 to 0.3%, Si: less than 0.1%, Mn: 0.4 to 3%, Cr: 0.5 to 3%, and Al: 0.01 to 0.3%, further containing one or both of Mo: 0.2 to 1.5%, and V: 0.05 to 1.0%, having a balance of Fe and unavoidable impurities, and comprising a structure having 50% or more of bainite.
摘要翻译：本发明涉及一种提供更有效的表面硬化以提高疲劳强度的钢材，其特征在于以质量％计含有C：0.01〜0.3％，Si：小于0.1％，Mn：0.4〜3％，Cr ：0.5〜3％，Al：0.01〜0.3％，还含有Mo：0.2〜1.5％，V：0.05〜1.0％中的一种或两种，余量为Fe和不可避免的杂质，并且包含具有50 ％以上的贝氏体。

8. 发明申请

US20130101457A1 STEEL FOR MACHINE STRUCTURE EXHIBITING EXCELLENT MACHINABILITY 有权
标题翻译：机械结构钢展示卓越的机械性能
公开(公告)号：US20130101457A1
公开(公告)日：2013-04-25
申请号：US13806691
申请日：2011-07-11
申请人： Toshiharu Aiso , Suguru Yoshida , Manabu Kubota , Kei Miyanishi , Shuji Kozawa
发明人： Toshiharu Aiso , Suguru Yoshida , Manabu Kubota , Kei Miyanishi , Shuji Kozawa
IPC分类号： C22C38/60 , C22C38/44 , C22C38/50 , C22C38/18 , C22C38/28 , C22C38/22 , C22C38/32 , C22C38/26 , C22C38/34 , C22C38/24 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/42
CPC分类号： C22C38/60 , C21D1/42 , C21D8/0226 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/50 , Y02P10/253
摘要： This steel for a machine structure contains, in mass %: C: 0.40% to less than 0.75%; Si: 0.01% to 3.0%; Mn: 0.1% to 1.8%; S: 0.001% to 0.1%; Al: more than 0.1% and not more than 1.0%; N: 0.001% to 0.02%; and P: limited to not more than 0.05%, with a balance including Fe and inevitable impurities, in which the steel satisfies 139.38 ≦214×[C]+30.6×[Si]+42.8×[Mn]−14.7×[Al]≦177 and 0.72≦[C]+1/7×[Si]+1/5×[Mn]
摘要翻译：这种机械结构钢以质量％计含有：C：0.40％至小于0.75％; Si：0.01〜3.0％ Mn：0.1〜1.8％ S：0.001〜0.1％ Al：大于0.1％且不大于1.0％; N：0.001〜0.02％其中钢满足139.38 @ 214×[C] + 30.6×[Si] + 42.8×[Mn] -14.7×[Al]的平衡值，不超过0.05％ @ 177和0.72 @ [C] + 1/7×[Si] + 1/5×[Mn] <1.539。

9. 发明授权

US09139894B2 Steel for machine structure exhibiting excellent machinability 有权
标题翻译：具有优良机械加工性能的机械结构用钢
公开(公告)号：US09139894B2
公开(公告)日：2015-09-22
申请号：US13806691
申请日：2011-07-11
申请人： Toshiharu Aiso , Suguru Yoshida , Manabu Kubota , Kei Miyanishi , Shuji Kozawa
发明人： Toshiharu Aiso , Suguru Yoshida , Manabu Kubota , Kei Miyanishi , Shuji Kozawa
IPC分类号： C22C38/60 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/00 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/50 , C21D8/02 , C21D1/42
CPC分类号： C22C38/60 , C21D1/42 , C21D8/0226 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/50 , Y02P10/253
摘要： This steel for a machine structure contains, in mass %: C: 0.40% to less than 0.75%; Si: 0.01% to 3.0%; Mn: 0.1% to 1.8%; S: 0.001% to 0.1%; Al: more than 0.1% and not more than 1.0%; N: 0.001% to 0.02%; and P: limited to not more than 0.05%, with a balance including Fe and inevitable impurities, in which the steel satisfies 139.38≦214×[C]+30.6×[Si]+42.8×[Mn]−14.7×[Al]≦177 and 0.72≦[C]+1/7×[Si]+1/5×[Mn]
摘要翻译：这种机械结构钢以质量％计含有：C：0.40％至小于0.75％; Si：0.01〜3.0％ Mn：0.1〜1.8％ S：0.001〜0.1％ Al：大于0.1％且不大于1.0％; N：0.001〜0.02％其中钢满足139.38＆nlE; 214×[C] + 30.6×[Si] + 42.8×[Mn] -14.7×[Al（Al）），P：限于不超过0.05％，余量包括Fe和不可避免的杂质 ]＆nlE; 177和0.72＆nlE; [C] + 1/7×[Si] + 1/5×[Mn] <1.539。

10. 发明授权

US09039962B2 Steel for induction hardening, roughly shaped material for induction hardening, producing method thereof, and induction hardening steel part 有权
标题翻译：用于感应淬火的钢，用于感应淬火的大致成形材料，其制造方法和感应淬火钢部件
公开(公告)号：US09039962B2
公开(公告)日：2015-05-26
申请号：US13637414
申请日：2011-02-15
申请人： Manabu Kubota , Toshiharu Aiso , Kei Miyanishi
发明人： Manabu Kubota , Toshiharu Aiso , Kei Miyanishi
IPC分类号： C22C38/08 , C21D9/32 , C21D1/18 , C21D1/42 , C21D9/30 , C21D9/40 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/60 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28
CPC分类号： C22C38/60 , C21D1/18 , C21D1/42 , C21D9/30 , C21D9/32 , C21D9/40 , C21D2211/004 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/54 , Y02P10/253
摘要： A steel for an induction hardening including, by mass %, C: more than 0.75% to 1.20%, Si: 0.002 to 3.00%, Mn: 0.20 to 2.00%, S: 0.002 to 0.100%, Al: more than 0.050% to 3.00%, P: limited to 0.050% or less, N: limited to 0.0200% or less, O: limited to: 0.0030% or less, and the balance composing of iron and unavoidable impurities, wherein an Al content and a N content satisfy, by mass %, Al−(27/14)×N>0.050%.
摘要翻译：一种感应淬火用钢，以质量％计含有C：大于0.75％〜1.20％，Si：0.002〜3.00％，Mn：0.20〜2.00％，S：0.002〜0.100％，Al：大于0.050％〜 3.00％，P：限于0.050％以下，N：限于0.0200％以下，O：限于0.0030％以下，构成铁和不可避免的杂质的平衡，其中Al含量和N含量满足，Al-（27/14）×N> 0.050％。

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