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。

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。

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。

公开(公告)号：US20120298262A1

公开(公告)日：2012-11-29

申请号：US13576530

申请日：2011-03-11

申请人： Daisuke Hirakami ,  Tetsushi Chida ,  Toshimi Tarui

发明人： Daisuke Hirakami ,  Tetsushi Chida ,  Toshimi Tarui

IPC分类号： B32B15/04 ,  C23C8/02

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US20120080122A1

公开(公告)日：2012-04-05

申请号：US13261068

申请日：2010-06-14

申请人： Tetsushi Chida ,  Toshimi Tarui ,  Daisuke Hirakami

发明人： Tetsushi Chida ,  Toshimi Tarui ,  Daisuke Hirakami

IPC分类号： B32B15/04 ,  C22C38/18 ,  C22C38/02 ,  C22C38/12 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14

CPC分类号： C23C8/26 ,  C21D1/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C8/36 ,  C23C8/50

摘要： The present invention lowers the strength before nitriding to improve the machinability, while deepens the effective hardened case of the nitrided case for improving the fatigue strength. It provides steel for nitriding use containing, by mass %, C: 0.05 to 0.30%, Si: 0.003 to 0.50%, Mn: 0.4 to 3.0%, Cr: 0.2 to 0.9%, Al: 0.19 to 0.70%, V: 0.05 to 1.0%, and Mo: 0.05 to 0.50%, having contents of Al and Cr satisfying 0.5%≦1.9Al+Cr≦1.8%, and having a balance of Fe and unavoidable impurities.

摘要翻译： 本发明降低氮化前的强度，提高机械加工性，同时加深氮化壳的有效硬化情况，提高疲劳强度。 提供氮化用钢，以质量％计含有C：0.05〜0.30％，Si：0.003〜0.50％，Mn：0.4〜3.0％，Cr：0.2〜0.9％，Al：0.19〜0.70％，V：0.05 〜1.0％，Mo：0.05〜0.50％，Al和Cr的含量满足0.5％＆lt; 1lE; 1.9Al + Cr＆nlE; 1.8％，余量为Fe和不可避免的杂质。

公开(公告)号：US08951365B2

公开(公告)日：2015-02-10

申请号：US13576530

申请日：2011-03-11

申请人： Daisuke Hirakami ,  Tetsushi Chida ,  Toshimi Tarui

发明人： Daisuke Hirakami ,  Tetsushi Chida ,  Toshimi Tarui

IPC分类号： 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分类号： 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

摘要： 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.

摘要翻译： 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：US20120247618A1

公开(公告)日：2012-10-04

申请号：US13515444

申请日：2011-03-11

申请人： Daisuke Hirakami ,  Tetsushi Chida ,  Toshimi Tarui

发明人： Daisuke Hirakami ,  Tetsushi Chida ,  Toshimi Tarui

IPC分类号： C23C8/26

CPC分类号： C21D9/0093 ,  C21D8/065 ,  C21D9/52 ,  C21D9/525 ,  C21D2211/008 ,  C21D2221/10 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/40 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C8/26

摘要： A high strength steel material 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 both of V: 1.5% or less and Mo: 3.0% or less, the contents of V and Mo satisfying V+1/2Mo>0.4%, further containing one or more of Cr: 0.05 to 1.5%, 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 material being formed with (a) a nitrided layer having a thickness from the surface of the steel material of 200 μm or more and a nitrogen concentration of 12.0 mass % or less and higher than the nitrogen concentration of the steel material by 0.02 mass % or more and (b) a low carbon region having a depth from the surface of the steel material of 100 μm or more to 1000 μm or less and having a carbon concentration of 0.05 mass % or more and 0.9 time or less the carbon concentration of the steel material.

摘要翻译： 一种耐延迟断裂性优异的高强度钢材，以质量％计含有C：0.10〜0.55％，Si：0.01〜3％，Mn：0.1〜2％，进一步含有V：1.5％ 以下，Mo：3.0％以下，V和Mo的含量满足V + 1 / 2Mo> 0.4％，进一步含有Cr：0.05〜1.5％，Nb：0.001〜0.05％，Cu：0.01〜 4％，Ni：0.01〜4％，B：0.0001〜0.005％，余量为Fe和不可避免的杂质，其结构为主要是回火马氏体组织，钢材表面形成有（a） 氮化层的钢板表面的厚度为200μm以上，氮浓度为12.0质量％以下，高于钢材的氮浓度为0.02质量％以上，（b）低碳 具有从钢材表面的深度为100μm以上至1000μm以下且碳浓度为0.05质量％以上且0.9t以下的区域 ime或更少的钢材料的碳浓度。

公开(公告)号：US08557060B2

公开(公告)日：2013-10-15

申请号：US13183710

申请日：2011-07-15

申请人： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

发明人： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

IPC分类号： C22C38/12

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C23C8/40

摘要： 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.

摘要翻译： 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：US20060144474A1

公开(公告)日：2006-07-06

申请号：US10546330

申请日：2004-01-20

申请人： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

发明人： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

IPC分类号： C22C38/12

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C23C8/40

摘要： 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.

摘要翻译： 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：US08016953B2

公开(公告)日：2011-09-13

申请号：US10546330

申请日：2004-01-20

申请人： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

发明人： Shingo Yamasaki ,  Daisuke Hirakami ,  Toshimi Tarui ,  Seiki Nishida

IPC分类号： C22C38/12

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C23C8/40

摘要： 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.

摘要翻译： 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。