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1. 发明授权

US10077489B2 Steel sheet for soft-nitriding and method for manufacturing the same 有权
公开(公告)号：US10077489B2
公开(公告)日：2018-09-18
申请号：US14408662
申请日：2012-06-27
申请人： Takashi Kobayashi , Nobuyuki Nakamura , Tetsuya Mega
发明人： Takashi Kobayashi , Nobuyuki Nakamura , Tetsuya Mega
IPC分类号： C22C38/26 , C22C38/00 , C21D9/46 , C23C8/32 , C22C38/02 , C22C38/04 , C22C38/06 , C21D6/00 , C21D8/02
CPC分类号： C22C38/26 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0263 , C21D9/46 , C21D2211/005 , C21D2211/009 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C23C8/32
摘要： A steel sheet for soft-nitriding has a composition containing: C: 0.05% or more to 0.10% or less; Si: 0.5% or less; Mn: 0.7% or more to 1.5% or less; P: 0.05% or less; S: 0.01% or less; Al: 0.01% or more to 0.06% or less; Cr: 0.5% or more to 1.5% or less; Nb: 0.005% or more to 0.025% or less; and N: 0.005% or less, on a mass percent basis, such that C and Nb satisfy 0.10≤Nb/C≤0.30 (where C and Nb are respective contents of the elements (by mass %)), wherein balance comprises Fe and incidental impurities, and a microstructure that is a complex-phase microstructure containing ferrite and pearlite, and the microstructure having a ratio of a microstructure other than the ferrite and the pearlite of 1% or less, and the microstructure having a ratio of polygonal ferrite in the ferrite of less than 50%.

2. 发明授权

US09068238B2 High tensile strength hot rolled steel sheet having excellent formability and method for manufacturing the same 有权
标题翻译：成形性优异的高强度热轧钢板及其制造方法
公开(公告)号：US09068238B2
公开(公告)日：2015-06-30
申请号：US13638157
申请日：2011-03-30
申请人： Tamako Ariga , Katsumi Nakajima , Tetsuya Mega
发明人： Tamako Ariga , Katsumi Nakajima , Tetsuya Mega
IPC分类号： C22C38/14 , C22C38/12 , C21D8/02 , C21D8/04 , C21D9/48 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/24 , C22C38/28 , C22C38/38
CPC分类号： C21D8/0226 , C21D8/0426 , C21D8/0463 , C21D9/48 , C21D2211/004 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/24 , C22C38/28 , C22C38/38
摘要： Described is a high tensile strength hot rolled steel sheet having high strength and formability, and a manufacturing method. It has tensile strength ≧980 MPa and excellent formability, and specifically identified ranges by mass % of C, Si, Mn, P, S, N, Al, Ti, V, Solute V, and Solute Ti; (ii) microstructure with fine carbides dispersion precipitated therein, the fine carbides containing Ti and V and having the average particle diameter
摘要翻译：描述了具有高强度和成形性的高拉伸强度热轧钢板及其制造方法。其抗拉强度≥980MPa，成形性优异，具体地以C，Si，Mn，P，S，N，Al，Ti，V，溶质V和溶质Ti的质量％表示。（ii）在其中析出的碳化物微分散体的显微组织，含有Ti和V的微细碳化物，平均粒径<10nm，体积比相对于整个微观结构≧0.007; 和作为铁素体相的基体，其相对于整个微观结构的面积比为≥97％。 C，Ti，V，S和N满足（1）Ti≥0.08+（N / 14×48 + S / 32×48）和（2）0.8＆nlE;（Ti / 48 + V / 51）/（C / 12）＆nlE; 1.2，其中“C”，“Ti”，“V”，“S”和“N”分别表示相应元素的含量（质量％）。

3. 发明申请

US20130186526A1 HOT-ROLLED STEEL SHEET HAVING EXCELLENT COLD FORMABILITY AND HARDENABILITY AND METHOD FOR MANUFACTURING THE SAME 有权
标题翻译：具有优异的可冷却性和可制造性的热轧钢板及其制造方法
公开(公告)号：US20130186526A1
公开(公告)日：2013-07-25
申请号：US13635505
申请日：2011-03-15
申请人： Nobuyuki Nakamura , Takashi Kobayashi , Tetsuya Mega
发明人： Nobuyuki Nakamura , Takashi Kobayashi , Tetsuya Mega
IPC分类号： C21D8/02 , C22C38/50 , C22C38/44 , C22C38/32 , C22C38/28 , C22C38/00 , C22C38/14 , C22C38/12 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/54 , C22C38/22
CPC分类号： C21D8/0263 , C21D8/0226 , C21D9/0068 , C21D9/32 , C21D9/46 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/44 , C22C38/50 , C22C38/54
摘要： Hot-rolled steel has a chemical composition containing, by mass%, C: 0.18% or more and 0.29% or less, N: 0.0050% or less, Ti: 0.002% or more and 0.05% or less, B: 0.0005% or more and 0.0050% or less, and appropriately controlled amounts of Si, Mn, P, S, Al, and a tensile strength of 500 MPa or less with a variation in tensile strength of 60 MPa or less throughout a region including the edges in the width direction of the steel sheet, and having excellent cold formability and hardenability.
摘要翻译：热轧钢的化学成分含有以质量％计含有C：0.18％以上且0.29％以下，N：0.0050％以下，Ti：0.002％以上且0.05％以下，B：0.0005％以下更优选为0.0050％以下，适当控制Si，Mn，P，S，Al，拉伸强度为500MPa以下，拉伸强度变化为60MPa以下，钢板的宽度方向，并且具有优异的冷成形性和淬透性。

4. 发明授权

US5172183A Glow discharge atomic emission spectroscopy and apparatus thereof 失效
标题翻译：玻璃放电原子发射光谱及其装置
公开(公告)号：US5172183A
公开(公告)日：1992-12-15
申请号：US670584
申请日：1991-03-18
申请人： Tetsuya Mega , Michio Katayama , Masao Yokoi , Yasuko Furunushi
发明人： Tetsuya Mega , Michio Katayama , Masao Yokoi , Yasuko Furunushi
IPC分类号： G01N21/67
CPC分类号： G01N21/67
摘要： An improved glow discharge atomic emission spectroscopy method and apparatus is offered in which the introduction of a rare gas into a glow discharge tube is temporarily cut off and after the inside of the glow discharge tube is maintained at a higher degree of vacuum, a preliminary discharge is executed to remove adsorbed or extraneous substances on the specimen surface, and then the analysis of the specimen surface is performed. The method and the apparatus described in the above are suitable for quick and simple analysis of the uppermost surface layer of a solid specimen in the direction of depth.

5. 发明申请

US20130206289A1 HIGH-STRENGTH HOT-ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY AND METHOD FOR MANUFACTURING THE SAME 审中-公开
标题翻译：具有良好可塑性的高强度热轧钢板及其制造方法
公开(公告)号：US20130206289A1
公开(公告)日：2013-08-15
申请号：US13814947
申请日：2011-08-09
申请人： Katsumi Nakajima , Tetsuya Mega , Reiko Mizuno , Noriaki Moriyasu
发明人： Katsumi Nakajima , Tetsuya Mega , Reiko Mizuno , Noriaki Moriyasu
IPC分类号： C21D8/00 , C22C38/02 , C22C38/14 , C22C38/06 , C22C38/12 , C22C38/00 , C22C38/04
CPC分类号： C21D8/005 , B32B15/013 , C21D8/0226 , C21D8/0263 , C21D9/46 , C21D2211/002 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14
摘要： A high-strength hot-rolled steel sheet having excellent formability has a composition containing, by mass, 0.04% to 0.1% of C, 0.3% to 1.3% of Si, 0.8% to 1.8% of Mn, 0.03% or less of P, 0.005% or less of S, 0.005% or less of N, 0.005% to 0.1% of Al, and at least one element selected from 0.002% to less than 0.03% of Ti, 0.002% to less than 0.03% of V, and 0.002% to less than 0.02% of Nb, the balance being Fe and incidental impurities. The steel sheet has a microstructure in which the area fraction of ferrite phase in the entire structure is 85% or more, the area fraction of bainite phase in the entire structure is 10% or less, the area fraction of phases other than the ferrite and bainite phases in the entire structure is 5% or less, and the area fraction of acicular ferrite phase in the entire ferrite phase is 30% to less than 80%.
摘要翻译：具有优异成形性的高强度热轧钢板具有以下组成：质量分数为：C：0.04〜0.1％，Si：0.3〜1.3％，Mn：0.8〜1.8％，P：0.03％，S：0.005％以下，N：0.005％以下，Al：0.005〜0.1％，Ti：0.002〜0.03％，V：0.002〜小于0.03％和0.002％至小于0.02％的Nb，余量为Fe和附带杂质。钢板具有整体结构中的铁素体相的面积率为85％以上的组织，整个结构中的贝氏体相的面积分率为10％以下，铁素体以外的相的面积分数，整个结构中的贝氏体相为5％以下，并且铁素体相的全部针状铁素体相的面积率为30％以上且小于80％。

6. 发明申请

US20130133790A1 HIGH TENSILE STRENGTH HOT ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY AND METHOD FOR MANUFACTURING THE SAME 有权
标题翻译：具有优异可塑性的高强度热轧钢板及其制造方法
公开(公告)号：US20130133790A1
公开(公告)日：2013-05-30
申请号：US13638157
申请日：2011-03-30
申请人： Tamako Ariga , Katsumi Nakajima , Tetsuya Mega
发明人： Tamako Ariga , Katsumi Nakajima , Tetsuya Mega
IPC分类号： C21D8/02 , C22C38/28 , C22C38/24 , C22C38/00 , C22C38/12 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/38 , C22C38/14
CPC分类号： C21D8/0226 , C21D8/0426 , C21D8/0463 , C21D9/48 , C21D2211/004 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/24 , C22C38/28 , C22C38/38
摘要： Described is a high tensile strength hot rolled steel sheet having high strength and formability, and a manufacturing method. It has tensile strength≧980 MPa and excellent formability, and specifically identified ranges by mass % of C, Si, Mn, P, S, N, Al, Ti, V, Solute V, and Solute Ti; (ii) microstructure with fine carbides dispersion precipitated therein, the fine carbides containing Ti and V and having the average particle diameter
摘要翻译：描述了具有高强度和成形性的高拉伸强度热轧钢板及其制造方法。其拉伸强度> = 980MPa，成形性优异，具体确定为C，Si，Mn，P，S，N，Al，Ti，V，Solute V和Solute Ti的质量％（ii）在其中沉淀出细小碳化物分散体的显微组织，含有Ti和V并且平均粒径<10nm的微细碳化物以及相对于整个组织的体积比> = 0.007; 和相对于整个微结构的面积比> = 97％的铁素体相的基体。 C，Ti，V，S和N满足（1）Ti> = 0.08 +（N / 14×48 + S / 32×48）和（2）0.8 @（Ti / 48 + V / 51）/（C / 12）@ 1.2，其中“C”，“Ti”，“V”，“S”和“N”分别表示相应元素的含量（质量％）。

7. 发明申请

US20110048588A1 COLD-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME 审中-公开
标题翻译：冷轧钢板及其制造方法
公开(公告)号：US20110048588A1
公开(公告)日：2011-03-03
申请号：US12919780
申请日：2009-02-26
申请人： Tetsuya Mega , Nobuyuki Nakamura , Takashi Kobayashi , Yasunobu Nagataki , Takayoshi Kabeya
发明人： Tetsuya Mega , Nobuyuki Nakamura , Takashi Kobayashi , Yasunobu Nagataki , Takayoshi Kabeya
IPC分类号： C21D8/02 , C22C38/04
CPC分类号： C22C38/04 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D9/0068 , C21D9/40 , C21D9/46 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/06
摘要： A cold-rolled steel sheet has a partially recrystallized grain structure with a degree of unrecrystallization of 25% to 90% and a Rockwell hardness HRB of 83 or more, the cold-rolled steel sheet containing 0.01% to 0.15% C, 0.03% or less Si, 0.10% to 0.70% Mn, 0.025% or less P, 0.025% or less S, 0.01% to 0.05% Al, and 0.008% or less N on a mass basis, the remainder being Fe and unavoidable impurities, wherein the mean diameter of ferrite is 2 to 10 μm and these components satisfy Formula (1): (C %)+0.15×(Mn %)+0.85×(P %)≧0.21, wherein (M %) represents the content (mass percent) of an element M.
摘要翻译：冷轧钢板的不结晶度为25％〜90％，洛氏硬度HRB为83以上的部分再结晶组织，冷轧钢板含有0.01〜0.15％的C，0.03％或少量的Si，0.10〜0.70％的Mn，0.025％以下的P，0.025％以下的S，0.01％〜0.05％的Al，0.008％以下的N，余量为Fe和不可避免的杂质，铁素体的平均直径为2〜10μm，这些成分满足式（1）：（C％）+ 0.15×（Mn％）+ 0.85×（P％）≥0.21，（M％）表示含量（质量％）元素M.

8. 发明授权

US07485194B2 High tensile hot-rolled steel sheet excellent in resistance to scuff on mold and in fatigue characteristics 有权
标题翻译：高耐热热轧钢板耐模具耐磨性和疲劳特性
公开(公告)号：US07485194B2
公开(公告)日：2009-02-03
申请号：US10479637
申请日：2002-05-23
申请人： Tetsuya Mega , Kei Sakata
发明人： Tetsuya Mega , Kei Sakata
IPC分类号： C22C38/02 , C22C38/04 , C22C38/12
CPC分类号： C21D8/0226 , C21D8/0263 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12
摘要： This disclosure proposes a high-strength hot rolled steel sheet having excellent anti-die-galling property and anti-fatigue property, in which the steel sheet has a composition including C: not less than 0.02 mass % but not more than 0.2 mass %, Si: not less than 0.2 mass % but not more than 1.2 mass %, Mn: not less than 1.0 mass % but not more than 3.0 mass %, Mo: not less than 0.1 mass % but not more than 1.0 mass %, Al: not less than 0.01 mass % but not more than 0.1 mass %, P: not more than 0.03 mass % S: not more than 0.01 mass % and the remainder being substantially Fe and inevitable impurities, and has a steel microstructure containing not less than 55 vol % of ferrite and not less than 10 vol % but not more than 40 vol % of martensite provided that a total of both is not less than 95 vol %, and a ratio ds/dc of an average crystal grain size ds of the ferrite in a surface layer portion of the steel sheet to an average crystal grain size dc of the ferrite in a center portion of the steel sheet is 0.3
摘要翻译：本公开内容提出了具有优异的抗模具磨损性和抗疲劳性的高强度热轧钢板，其中钢板具有包括C：0.02质量％以上且0.2质量％以下的组成， Si：0.2质量％以上且1.2质量％以下，Mn：1.0质量％以上3.0质量％以下，Mo：0.1质量％以上且1.0质量％以下，Al： 0.01质量％以上且0.1质量％以下，P：0.03质量％以下S：0.01质量％以下，余量基本上为Fe及不可避免的杂质，具有不小于55的钢组织铁素体的体积％，并且不小于10体积％但不大于40体积％的马氏体，只要两者的总和不小于95体积％，并且铁氧体的平均晶粒尺寸ds的ds / dc比在钢板的表层部分中的铁素体的平均晶粒直径dc在t的中心部分钢板为0.3

9. 发明授权

US07347902B2 High tensile hot rolled steel sheet excellent in shape freezing property and endurance fatigue characteristics after forming 有权
标题翻译：成形后的冷冻性和耐疲劳特性优异的高强度热轧钢板
公开(公告)号：US07347902B2
公开(公告)日：2008-03-25
申请号：US10479773
申请日：2002-06-04
申请人： Tetsuya Mega , Kei Sakata , Kazuhiro Seto
发明人： Tetsuya Mega , Kei Sakata , Kazuhiro Seto
IPC分类号： C22C38/06 , C22C38/04
CPC分类号： C21D9/34 , C21D8/0263 , C21D9/46 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12
摘要： According to the invention, a high-strength hot rolled steel sheet having an excellent shape fixability as hot-rolled and an excellent fatigue durability after the forming, excellent weldability and phosphatability and a tensile strength of not less than 590 MPa level can be obtained by comprising C: not less than 0.02 mass % but not more than 0.2 mass %, Si: not less than 0.5 mass % but not more than 2.0 mass %, Mn: not less than 1.0 mass % but not more than 3.0 mass %, Al: not less than 0.01 mass % but not more than 0.1 mass %, N: not less than 0.002 mass % but not more than 0.006 mass %, P: not more than 0.03 mass %, S: not more than 0.01 mass % and solid-soluted (C+N): not less than 0.0010 mass % and the reminder being Fe and inevitable impurities, and having a steel structure that a primary phase is ferrite and a secondary phase is martensite phase of 5-30 % at a volume ratio and a total of both is not less than 95 % as a volume ratio, and further having an average crystal grain size of ferrite of not more than 8 μm.
摘要翻译：根据本发明，可以通过以下方式获得具有热轧成形性优异，成形后优异的耐疲劳性，优异的焊接性，磷化性，拉伸强度为590MPa以上的高强度热轧钢板 C：0.02质量％以上0.2质量％以下Si：0.5质量％以上2.0质量％以下Mn：1.0质量％以上3.0质量％以下Al：：0.01质量％以上且0.1质量％以下N：0.002质量％以上0.006质量％以下P：0.03质量％以下S：0.01质量％以下固体（C + N）：不小于0.0010质量％，并且提醒为Fe和不可避免的杂质，并且具有初级相为铁素体的钢结构，第二相为体积比为5-30％的马氏体相并且两者的总和不小于体积比的95％，并且还具有平均晶粒s 铁素体不超过8毫米。

10. 发明授权

US09212411B2 High strength steel sheet and method for manufacturing the same 有权
标题翻译：高强度钢板及其制造方法
公开(公告)号：US09212411B2
公开(公告)日：2015-12-15
申请号：US13381992
申请日：2010-06-29
申请人： Koichi Nakagawa , Takeshi Yokota , Kazuhiro Seto , Satoshi Kinoshiro , Yuji Tanaka , Katsumi Yamada , Tetsuya Mega , Katsumi Nakajima
发明人： Koichi Nakagawa , Takeshi Yokota , Kazuhiro Seto , Satoshi Kinoshiro , Yuji Tanaka , Katsumi Yamada , Tetsuya Mega , Katsumi Nakajima
IPC分类号： C21D9/28 , C22C38/12 , C22C38/02 , C21D8/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/24 , C22C38/28
CPC分类号： C22C38/02 , C21D8/0226 , C21D8/0273 , C21D2211/004 , C21D2211/005 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/24 , C22C38/28 , Y10T428/12229
摘要： A high-strength steel sheet includes a composition containing, in mass percent, 0.08% to 0.20% of carbon, 0.2% to 1.0% of silicon, 0.5% to 2.5% of manganese, 0.04% or less of phosphorus, 0.005% or less of sulfur, 0.05% or less of aluminum, 0.07% to 0.20% of titanium, and 0.20% to 0.80% of vanadium, the balance being iron and incidental impurities.
摘要翻译：高强度钢板包括以质量％计含有0.08％至0.20％的碳，0.2％至1.0％的硅，0.5％至2.5％的锰，0.04％以下的磷，0.005％以下的组合物的硫，0.05％以下的铝，0.07〜0.20％的钛，0.20〜0.80％的钒，余量为铁和杂质。

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