公开(公告)号：US20120216787A1

公开(公告)日：2012-08-30

申请号：US13504896

申请日：2011-06-14

Applicant: Mitsuru Morita ,  Toshimi Tarui ,  Hiroaki Sakamoto ,  Hirokatsu Yashiro ,  Makoto Kosaka

Inventor： Mitsuru Morita ,  Toshimi Tarui ,  Hiroaki Sakamoto ,  Hirokatsu Yashiro ,  Makoto Kosaka

IPC: B24D11/00

CPC classification number: B24B27/0633 ,  B23D61/185 ,  B23K35/262 ,  B23K2101/20 ,  B23K2101/32 ,  B23K2101/34 ,  B24D3/004 ,  B32B15/013 ,  C21D8/06 ,  C21D9/24 ,  C21D2211/004 ,  C22C13/00 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/34

Abstract: A saw wire includes a steel wire (11) having a steel strand (11a) with predetermined composition, an abrasive (13) fixed to the steel wire (11) by a fixing part (12), and an intermetallic compound (15) on an interface between the abrasive (13) and the fixing part (12). Tensile strength of the steel strand (11) is 3500 MPa or more, and the fixing part (12) includes a Sn-based solder containing Zn or Ag.

Abstract translation: 锯线包括具有预定组成的钢绞线（11a）的钢丝（11），通过固定部（12）固定在钢丝网（11）上的研磨剂（13）和金属间化合物（15） 磨料（13）和固定部件（12）之间的界面。 钢绞线（11）的拉伸强度为3500MPa以上，固定部（12）包含含有Zn或Ag的Sn系焊料。

公开(公告)号：US08016953B2

公开(公告)日：2011-09-13

申请号：US10546330

申请日：2004-01-20

Applicant: Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

Inventor： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

IPC: C22C38/12

CPC classification number: C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C23C8/40

Abstract: The invention provides a steel material with satisfactory hydrogen embrittlement resistance, and particularly it relates to high-strength steel with satisfactory hydrogen embrittlement resistance and a strength of 1200 MPa or greater, as well as a process for production thereof. At least one simple or compound deposit of oxides, carbides or nitrides as hydrogen trap sites which trap hydrogen with a specific trap energy is added to steel, where the mean sizes, number densities, and length-to-thickness ratios (aspect ratio) are in specific ranges. By applying the specific steel components and production process it is possible to obtain high-strength steel with excellent hydrogen embrittlement resistance.

Abstract translation: 本发明提供具有令人满意的耐氢脆性的钢材，特别涉及具有良好的耐氢脆性和1200MPa以上的强度的高强度钢及其制造方法。 将至少一种简单或复合的氧化物，碳化物或氮化物沉积物作为捕集具有特定阱能量的氢的氢捕集点添加到钢中，其中平均尺寸，数量密度和长度与厚度比（纵横比） 在特定范围内。 通过应用特定的钢部件和制造方法，可以获得耐氢脆性优异的高强度钢。

公开(公告)号：US07510614B2

公开(公告)日：2009-03-31

申请号：US11490975

申请日：2006-07-21

Applicant: Suguru Yoshida ,  Toshimi Tarui ,  Manabu Kubota ,  Hideki Matsuda ,  Tadashi Ohya ,  Koki Mizuno

Inventor： Suguru Yoshida ,  Toshimi Tarui ,  Manabu Kubota ,  Hideki Matsuda ,  Tadashi Ohya ,  Koki Mizuno

IPC: C22C28/02 ,  C22C38/04 ,  C22C38/06 ,  C21D8/00

CPC classification number: B21K1/46 ,  B21H3/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  F16B35/00

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20070017610A1

公开(公告)日：2007-01-25

申请号：US11490975

申请日：2006-07-21

Applicant: Suguru Yoshida ,  Toshimi Tarui ,  Manabu Kubota ,  Hideki Matsuda ,  Tadashi Ohya ,  Koki Mizuno

Inventor： Suguru Yoshida ,  Toshimi Tarui ,  Manabu Kubota ,  Hideki Matsuda ,  Tadashi Ohya ,  Koki Mizuno

IPC: C22C38/12

CPC classification number: B21K1/46 ,  B21H3/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  F16B35/00

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08557060B2

公开(公告)日：2013-10-15

申请号：US13183710

申请日：2011-07-15

Applicant: Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

Inventor： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

IPC: C22C38/12

CPC classification number: C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C23C8/40

Abstract: The invention provides a steel material with satisfactory hydrogen embrittlement resistance, and particularly it relates to high-strength steel with satisfactory hydrogen embrittlement resistance and a strength of 1200 MPa or greater, as well as a process for production thereof. At least one simple or compound deposit of oxides, carbides or nitrides as hydrogen trap sites which trap hydrogen with a specific trap energy is added to steel, where the mean sizes, number densities, and length-to-thickness ratios (aspect ratio) are in specific ranges. By applying the specific steel components and production process it is possible to obtain high-strength steel with excellent hydrogen embrittlement resistance.

Abstract translation: 本发明提供具有令人满意的耐氢脆性的钢材，特别涉及具有良好的耐氢脆性和1200MPa以上的强度的高强度钢及其制造方法。 将至少一种简单或复合的氧化物，碳化物或氮化物沉积物作为捕集具有特定阱能量的氢的氢捕集点添加到钢中，其中平均尺寸，数量密度和长度与厚度比（纵横比） 在特定范围内。 通过应用特定的钢部件和制造方法，可以获得耐氢脆性优异的高强度钢。

公开(公告)号：US20070017609A1

公开(公告)日：2007-01-25

申请号：US11490955

申请日：2006-07-21

Applicant: Manabu Kubota ,  Suguru Yoshida ,  Toshimi Tarui ,  Hideki Matsuda ,  Koki Mizuno ,  Tadashi Ohya

Inventor： Manabu Kubota ,  Suguru Yoshida ,  Toshimi Tarui ,  Hideki Matsuda ,  Koki Mizuno ,  Tadashi Ohya

IPC: C22C38/12

CPC classification number: C22C38/02 ,  C21D1/18 ,  C21D9/0093 ,  C22C38/04 ,  C22C38/12 ,  F16B35/00

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20060144474A1

公开(公告)日：2006-07-06

申请号：US10546330

申请日：2004-01-20

Applicant: Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

Inventor： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

IPC: C22C38/12

CPC classification number: C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C23C8/40

Abstract: The invention provides a steel material with satisfactory hydrogen embrittlement resistance, and particularly it relates to high-strength steel with satisfactory hydrogen embrittlement resistance and a strength of 1200 MPa or greater, as well as a process for production thereof. At least one simple or compound deposit of oxides, carbides or nitrides as hydrogen trap sites which trap hydrogen with a specific trap energy is added to steel, where the mean sizes, number densities, and length-to-thickness ratios (aspect ratio) are in specific ranges. By applying the specific steel components and production process it is possible to obtain high-strength steel with excellent hydrogen embrittlement resistance.

Abstract translation: 本发明提供具有令人满意的耐氢脆性的钢材，特别涉及具有良好的耐氢脆性和1200MPa以上的强度的高强度钢及其制造方法。 将至少一种简单或复合的氧化物，碳化物或氮化物沉积物作为捕集具有特定阱能量的氢的氢捕集点添加到钢中，其中平均尺寸，数量密度和长度与厚度比（纵横比） 在特定范围内。 通过应用特定的钢部件和制造方法，可以获得耐氢脆性优异的高强度钢。

公开(公告)号：US08951365B2

公开(公告)日：2015-02-10

申请号：US13576530

申请日：2011-03-11

Applicant: Daisuke Hirakami ,  Tetsushi Chida ,  Toshimi Tarui

Inventor： Daisuke Hirakami ,  Tetsushi Chida ,  Toshimi Tarui

IPC: C23C8/26 ,  C23C8/00 ,  C22C38/02 ,  C22C38/04 ,  C21D8/06 ,  C21D9/00 ,  C21D9/52 ,  C22C38/00 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C8/32 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18

CPC classification number: C23C8/26 ,  C21D8/065 ,  C21D9/0093 ,  C21D9/52 ,  C21D9/525 ,  C21D2211/008 ,  C21D2221/10 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C8/32

Abstract: A steel which is excellent in delayed fracture resistance containing, by mass %, C: 0.10 to 0.55%, Si: 0.01 to 3%, and Mn: 0.1 to 2%, further containing one or more of Cr: 0.05 to 1.5%, V: 0.05 to 0.2%, Mo: 0.05 to 0.4%, Nb: 0.001 to 0.05%, Cu: 0.01 to 4%, Ni: 0.01 to 4%, and B: 0.0001 to 0.005%, and having a balance of Fe and unavoidable impurities, the structure being a mainly tempered martensite structure, the surface of the steel being formed with (a) a nitrided layer having a certain thickness range and a nitrogen concentration higher than the nitrogen concentration of the steel by 0.02 mass % or more and (b) a low carbon region having a certain depth range from the surface of the steel and having a carbon concentration of 0.9 time or less the carbon concentration of the steel.

Abstract translation: C：0.10〜0.55％，Si：0.01〜3％，Mn：0.1〜2％，进一步含有Cr：0.05〜1.5％中的一种或多种， V：0.05〜0.2％，Mo：0.05〜0.4％，Nb：0.001〜0.05％，Cu：0.01〜4％，Ni：0.01〜4％，B：0.0001〜0.005％ 不可避免的杂质，该结构是主要回火的马氏体结构，钢的表面形成有（a）具有一定厚度范围和氮浓度高于钢的氮浓度的氮化物浓度为0.02质量％以上， （b）具有与钢表面一定深度范围并且碳浓度为钢的碳浓度为0.9倍以下的低碳区域。

公开(公告)号：US08876988B2

公开(公告)日：2014-11-04

申请号：US13702285

申请日：2011-11-17

Applicant: Tetsushi Chida ,  Manabu Kubota ,  Toshimi Tarui ,  Daisuke Hirakami ,  Masayuki Hashimura

Inventor： Tetsushi Chida ,  Manabu Kubota ,  Toshimi Tarui ,  Daisuke Hirakami ,  Masayuki Hashimura

IPC: C22C38/38 ,  C22C38/24 ,  C21D1/06 ,  C22C38/32

CPC classification number: C22C38/38 ,  C21D1/06 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/32 ,  C23C8/32

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08707944B2

公开(公告)日：2014-04-29

申请号：US13504896

申请日：2011-06-14

Applicant: Mitsuru Morita ,  Toshimi Tarui ,  Hiroaki Sakamoto ,  Hirokatsu Yashiro ,  Makoto Kosaka

Inventor： Mitsuru Morita ,  Toshimi Tarui ,  Hiroaki Sakamoto ,  Hirokatsu Yashiro ,  Makoto Kosaka

IPC: B28D1/08

CPC classification number: B24B27/0633 ,  B23D61/185 ,  B23K35/262 ,  B23K2101/20 ,  B23K2101/32 ,  B23K2101/34 ,  B24D3/004 ,  B32B15/013 ,  C21D8/06 ,  C21D9/24 ,  C21D2211/004 ,  C22C13/00 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/34

Abstract: A saw wire includes a steel wire (11) having a steel strand (11a) with predetermined composition, an abrasive (13) fixed to the steel wire (11) by a fixing part (12), and an intermetallic compound (15) on an interface between the abrasive (13) and the fixing part (12). Tensile strength of the steel strand (11) is 3500 MPa or more, and the fixing part (12) includes a Sn-based solder containing Zn or Ag.

Abstract translation: 锯线包括具有预定组成的钢绞线（11a）的钢丝（11），通过固定部（12）固定在钢丝网（11）上的研磨剂（13）和金属间化合物（15） 磨料（13）和固定部件（12）之间的界面。 钢绞线（11）的拉伸强度为3500MPa以上，固定部（12）包含含有Zn或Ag的Sn系焊料。