公开(公告)号：US06306527B1

公开(公告)日：2001-10-23

申请号：US09685096

申请日：2000-10-11

申请人： Shushi Ikeda ,  Koichi Makii ,  Yosuke Shindo ,  Shunichi Hashimoto ,  Takahiro Kashima ,  Hiroshi Akamizu ,  Masahiro Nomura

发明人： Shushi Ikeda ,  Koichi Makii ,  Yosuke Shindo ,  Shunichi Hashimoto ,  Takahiro Kashima ,  Hiroshi Akamizu ,  Masahiro Nomura

IPC分类号： B32B1518

CPC分类号： C23C2/40 ,  C21D1/185 ,  C21D8/0273 ,  C21D2211/005 ,  C21D2211/008 ,  C23C2/02 ,  Y10S428/939 ,  Y10T428/12799

摘要： A hot-dip galvanized steel sheet which is produced from a cold-rolled steel sheet, as a base steel sheet, consisting essentially of C: 0.010-0.06 wt %, Si: no more than 0.5 wt %, Mn: no less than 0.5 wt % and less than 2.0 wt %, P: no more than 0.20 wt %, S: no more than 0.01 wt %, Al: 0.005-0.10 wt %, N: no more than 0.005 wt %, Cr: no more than 1.0 wt %, Mn+1.3Cr: 1.9-2.3 wt %, Fe: remainder, and having a structure composed of ferrite and a second phase containing martensite, said second phase in the structure accounting for no more than 20% in terms of area and martensite in the second phase accounting for no less than 50%, and which has a zinc-plated layer formed on the surface thereof by hot-dip galvanizing or hot-dip galvannealing. A process for production of said hot-dip galvanized steel sheet. This steel sheet has a composite structure containing martensite and yet it has a low strength (no higher than 500 MPa) and also has good strength-ductility balance.

摘要翻译： 一种由冷轧钢板作为基本钢板制成的热浸镀锌钢板，其基本上由C：0.010-0.06重量％，Si：不大于0.5重量％，Mn：不小于0.5 重量％且小于2.0重量％，P：不大于0.20重量％，S：不大于0.01重量％，Al：0.005-0.10重量％，N：不大于0.005重量％，Cr：不大于1.0 重量％，Mn + 1.3Cr：1.9-2.3重量％，Fe：余量，并且具有由铁素体构成的结构和含有马氏体的第二相，所述结构中的所述第二相占面积不大于20％ 第二相中的马氏体不低于50％，并且通过热浸镀锌或热浸镀锌合金在其表面形成有镀锌层。 一种生产所述热浸镀锌钢板的方法。 该钢板具有包含马氏体的复合结构，但其强度低（不高于500MPa），并且还具有良好的强度 - 延展性平衡。

公开(公告)号：US06316127B1

公开(公告)日：2001-11-13

申请号：US09553962

申请日：2000-04-20

申请人： Shushi Ikeda ,  Koichi Makii ,  Yosuke Shindo ,  Shunichi Hashimoto ,  Takahiro Kashima

发明人： Shushi Ikeda ,  Koichi Makii ,  Yosuke Shindo ,  Shunichi Hashimoto ,  Takahiro Kashima

IPC分类号： B32B1518

CPC分类号： C21D8/0278 ,  C21D8/0226 ,  C21D8/0273 ,  C22C38/002 ,  C22C38/004 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/28 ,  Y10S428/939 ,  Y10T428/12799

摘要： A P- and Ti-added galvannealed steel sheet superior in ductility, and a process for production thereof. It is made of a cold-rolled steel sheet and has alloyed hot-dip galvanizing on the surface thereof, said cold-rolled steel sheet having the chemical composition (in terms of wt %) of C: less than 0.010%, Si: no more than 0.5%, Mn: 1.0˜3.0%, P: no more than 0.20%, S: no more than 0.01%, Al: 0.005˜0.10%, N: no more than 0.0050%, Ti/48−(C/12+N/14+S/32): 0.0003˜0.0018 with the remainder being chiefly Fe, and said cold-rolled steel sheet being characterized by &rgr;1≦107 and &rgr;2≦5×105, where &rgr;1 is the number of precipitates whose particle diameter (D) is in the range of 10 nm≦D

摘要翻译： 具有优异延性的P型和Ti型合金化热镀锌钢板及其制造方法。 由冷轧钢板制成，其表面具有合金化的热浸镀锌，所述冷轧钢板的化学组成（按重量％计）C：小于0.010％，Si：不 大于0.5％，Mn：1.0〜3.0％，P：不大于0.20％，S：0.01％以下，Al：0.005〜0.10％，N：不大于0.0050％Ti / 48-（C / 12 + N / 14 + S / 32）：0.0003〜0.0018，余量主要为Fe，所述冷轧钢板的特征在于rho1 <= 107且rho2 = 5×105，其中rho1是其颗粒 直径（D）在10nm <= D <100nm的范围内，rho2是其粒径（D）在100nm

公开(公告)号：US07553380B2

公开(公告)日：2009-06-30

申请号：US11541748

申请日：2006-10-03

申请人： Shushi Ikeda ,  Hiroshi Akamizu ,  Shunichi Hashimoto ,  Takahiro Kashima ,  Tatsuya Asai

发明人： Shushi Ikeda ,  Hiroshi Akamizu ,  Shunichi Hashimoto ,  Takahiro Kashima ,  Tatsuya Asai

IPC分类号： C22C38/04 ,  C22C38/06 ,  C21D8/00

CPC分类号： C22C38/38 ,  C21D1/185 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06

摘要： Disclosed is a dual-phase steel sheet having low yield ratio, excellent in the balance for strength-elongation and for strength-stretch flange formability, and also excellent in bake hardening property containing (on the mass % basis). C: 0.01-0.20%, Si: 0.5% or less, Mn: 0.5-3%, sol.Al: 0.06% or less (inclusive 0%), P: 0.15% or less (exclusive 0%), and S: 0.02% or less (inclusive 0″), and in which the matrix phase contains tempered martensite; tempered martensite and ferrite; tempered bainite; or tempered bainite and ferrite, and the second phase comprises 1 to 30% of martensite at an area ratio based on the entire structure.

摘要翻译： 公开了低屈服比，强度伸长率和强度拉伸凸缘成形性的平衡优异的双相钢板，并且含有（以质量％计）的烘烤硬化性也优异。 C：0.01-0.20％，Si：0.5％以下，Mn：0.5〜3％，sol.Al：0.06％以下（含0％），P：0.15％以下（不含0％），S： 0.02％以下（含0“），基质相含有回火马氏体; 回火马氏体和铁素体; 回火贝氏体; 或回火贝氏体和铁素体，并且第二相以基于整个结构的面积比为1〜30％的马氏体。

公开(公告)号：US20070023113A1

公开(公告)日：2007-02-01

申请号：US11541748

申请日：2006-10-03

申请人： Shushi Ikeda ,  Hiroshi Akamizu ,  Shunichi Hashimoto ,  Takahiro Kashima ,  Tatsuya Asai

发明人： Shushi Ikeda ,  Hiroshi Akamizu ,  Shunichi Hashimoto ,  Takahiro Kashima ,  Tatsuya Asai

IPC分类号： C21D8/00

CPC分类号： C22C38/38 ,  C21D1/185 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06

摘要： Disclosed is a dual-phase steel sheet having low yield ratio, excellent in the balance for strength-elongation and for strength-stretch flange formability, and also excellent in bake hardening property containing (on the mass % basis). C: 0.01-0.20%, Si: 0.5% or less, Mn: 0.5-3%, sol.Al: 0.06% or less (inclusive 0%), P: 0.15% or less (exclusive 0%), and S: 0.02% or less (inclusive 0″), and in which the matrix phase contains tempered martensite; tempered martensite and ferrite; tempered bainite; or tempered bainite and ferrite, and the second phase comprises 1 to 30% of martensite at an area ratio based on the entire structure.

摘要翻译： 公开了低屈服比，强度伸长率和强度拉伸凸缘成形性的平衡优异的双相钢板，并且含有（以质量％计）的烘烤硬化性也优异。 C：0.01-0.20％，Si：0.5％以下，Mn：0.5〜3％，sol.Al：0.06％以下（含0％），P：0.15％以下（不含0％），S： 0.02％以下（含0“），基质相含有回火马氏体; 回火马氏体和铁素体; 回火贝氏体; 或回火贝氏体和铁素体，并且第二相以基于整个结构的面积比为1〜30％的马氏体。

公开(公告)号：US07090731B2

公开(公告)日：2006-08-15

申请号：US10470752

申请日：2002-01-31

申请人： Takahiro Kashima ,  Shunichi Hashimoto ,  Shushi Ikeda ,  Hiroshi Akamizu ,  Koh-ichi Sugimoto ,  Akihiko Nagasaka ,  Akinobu Kanda ,  Ryo Kikuchi

发明人： Takahiro Kashima ,  Shunichi Hashimoto ,  Shushi Ikeda ,  Hiroshi Akamizu ,  Koh-ichi Sugimoto ,  Akihiko Nagasaka ,  Akinobu Kanda ,  Ryo Kikuchi

IPC分类号： C22C38/02 ,  C22C38/06 ,  C21D8/02

CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/0273 ,  C21D9/52 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C23C2/02

摘要： A high strength steel sheet having (2-1) a base phase structure, the base phase structure being tempered martensite or tempered bainite and accounting for 50% or more in terms of a space factor relative to the whole structure, or the base phase structure comprising tempered martensite or tempered bainite which accounts for 15% or more in terms of a space factor relative to the whole structure and further comprising ferrite, the tempered martensite or the tempered bainite having a hardness which satisfies the relation of Vickers hardness (Hv)≧500[C]+30[Si]+3[Mn]+50 where [ ] represents the content (mass %) of each element, and (2-2) a second phase structure comprising retained austenite which accounts for 3 to 30% in terms of a space factor relative to the whole structure and optionally further comprising bainite and/or martensite, the retained austenite having a C concentration (CγR) of 0.8% or more.

摘要翻译： 具有（2-1）基相结构的高强度钢板，所述基本相结构为回火马氏体或回火贝氏体，相对于整体结构而言，占空间因子的50％以上，或基体相结构 包括回火马氏体或回火贝氏体，相对于整个结构，占空间系数的15％以上，还包含铁素体，回火马氏体或回火贝氏体的硬度满足维氏硬度（Hv）> = 500 [C] +30 [Si] +3 [Mn] +50其中[]表示各元素的含量（质量％），（2-2）包含3〜30的残留奥氏体的第2相结构 相对于整个结构的空间系数为％，任选地还包含贝氏体和/或马氏体，C浓度（CgammaR）为0.8％以上的残留奥氏体。

公开(公告)号：US07767036B2

公开(公告)日：2010-08-03

申请号：US11910013

申请日：2006-03-29

申请人： Takahiro Kashima ,  Yoichi Mukai ,  Hiroshi Akamizu ,  Koichi Sugimoto

发明人： Takahiro Kashima ,  Yoichi Mukai ,  Hiroshi Akamizu ,  Koichi Sugimoto

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  B32B15/01

CPC分类号： C22C38/02 ,  C21D6/00 ,  C21D6/002 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0447 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/06 ,  Y10T428/12799

摘要： A high-strength cold-rolled steel sheet exhibiting an excellent strength-workability balance, including in percent by mass: 0.10-0.25% of C; 1.0-2.0% of Si; 1.5-3.0% of Mn; 0.01% or less (not including 0%) of P; 0.005% or less (not including 0%) of S; 0.01-3.0% of Al; and remaining part consisting of iron and inevitable impurities, wherein the space factor of bainitic ferrite to the entire structure is 70% or more, the space factor of residual austenite to the entire structure is 5-20%, the hardness (HV) is 270 or greater, and the half-value width of an X-ray diffraction peak on a (200)-surface of α-iron is 0.220 degrees or smaller.

摘要翻译： 表现出优异的强度加工性平衡的高强度冷轧钢板，包括质量百分比：0.10-0.25％的C; 1.0-2.0％的Si; 1.5-3.0％的Mn; 0.01％以下（不含0％）P; 0.005％以下（不含0％）S; 0.01-3.0％的Al; 剩余部分由铁和不可避免的杂质组成，其中贝氏体铁素体对整个结构的空间因子为70％以上，残余奥氏体相对于整个结构的空间因子为5-20％，硬度（HV）为270 以上，α铁的（200）面的X射线衍射峰的半值宽度为0.220度以下。

公开(公告)号：US20080251161A1

公开(公告)日：2008-10-16

申请号：US11910013

申请日：2006-03-29

申请人： Takahiro Kashima ,  Yoichi Mukai ,  Hiroshi Akamizu ,  Koichi Sugimoto

发明人： Takahiro Kashima ,  Yoichi Mukai ,  Hiroshi Akamizu ,  Koichi Sugimoto

IPC分类号： C22C38/22

CPC分类号： C22C38/02 ,  C21D6/00 ,  C21D6/002 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0447 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/06 ,  Y10T428/12799

摘要： A high-strength cold-rolled steel sheet exhibiting an excellent strength-workability balance, including in percent by mass: 0.10-0.25% of C; 1.0-2.0% of Si; 1.5-3.0% of Mn; 0.01% or less (not including 0%) of P; 0.005% or less (not including 0%) of S; 0.01-3.0% of Al; and remaining part consisting of iron and inevitable impurities, wherein the space factor of bainitic ferrite to the entire structure is 70% or more, the space factor of residual austenite to the entire structure is 5-20%, the hardness (HV) is 270 or greater, and the half-value width of an X-ray diffraction peak on a (200)-surface of α-iron is 0.220 degrees or smaller.

摘要翻译： 表现出优异的强度加工性平衡的高强度冷轧钢板，包括质量百分比：0.10-0.25％的C; 1.0-2.0％的Si; 1.5-3.0％的Mn; 0.01％以下（不含0％）P; 0.005％以下（不含0％）S; 0.01-3.0％的Al; 剩余部分由铁和不可避免的杂质组成，其中贝氏体铁素体对整个结构的空间因子为70％以上，残余奥氏体相对于整个结构的空间因子为5-20％，硬度（HV）为270 以上，α铁的（200）表面的X射线衍射峰的半值宽度为0.220度以下。

公开(公告)号：US06554918B2

公开(公告)日：2003-04-29

申请号：US09909908

申请日：2001-07-23

申请人： Takahiro Kashima ,  Shunichi Hashimoto

发明人： Takahiro Kashima ,  Shunichi Hashimoto

IPC分类号： C22C3800

CPC分类号： C22C38/06 ,  C21D8/0226 ,  C22C38/04 ,  C22C38/14

摘要： A high-strength hot-rolled steel sheet superior in stretch flange formability which comprises C (0.01-0.10 mass %), Si (no more than 1.0 mass %), Mn (no more than 2.5 mass %), P (no more than 0.08 mass %), S (no more than 0.005 mass %), Al (0.015-0.050 mass %), and Ti (0.10-0.30 mass %), with the remainder being substantially Fe, said hot-rolled steel sheet having a structure composed mainly of ferrite in which the unit grain is surrounded by grains such that adjacent grains differ in orientation more than 15°, the unit grain having an average particle diameter (d) no larger than 5 &mgr;m. This steel sheet is produced by the steps of heating, rolling, cooling, and coiling under the following conditions. Heating temperature: 1150-1300° C.; reduction in rolling at 900-840° C.: no less than 70%; cooling rate: no less than 60° C./s; and coiling temperature: 300-500° C. or 600-750° C.

摘要翻译： 一种拉伸凸缘成形性优异的高强度热轧钢板，其特征在于，C（0.01-0.10质量％），Si（不大于1.0质量％），Mn（不大于2.5质量％），P（不大于 0.08质量％），S（0.005质量％以下），Al（0.015〜0.050质量％）和Ti（0.10〜0.30质量％），余量基本上为Fe，所述热轧钢板的结构 主要由铁素体组成，其中单位晶粒被颗粒包围，使得相邻晶粒的取向大于15°，单位颗粒的平均粒径（d）不大于5μm。 该钢板是在以下条件下通过加热，轧制，冷却和卷取的步骤制造的。 加热温度：1150-1300℃。 在900-840°C的轧制下降：不小于70％; 冷却速度：不低于60℃/ s; 卷取温度：300-500℃或600-750℃

公开(公告)号：US06540846B2

公开(公告)日：2003-04-01

申请号：US09793579

申请日：2001-02-27

申请人： Takahiro Kashima ,  Shunichi Hashimoto

发明人： Takahiro Kashima ,  Shunichi Hashimoto

IPC分类号： C22C3812

CPC分类号： C22C38/14 ,  C21D8/0226 ,  C21D8/0263 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

摘要： Disclosed herein is a high-strength hot-rolled steel sheet superior in stretch-flanging properties and fatigue properties which comprises (in mass %) 0.01-0.10% C, less than 2% Si (including 0%), 0.5-2% Mn, less than 0.08% P (including 0%), less than 0.01% S (including 0%), less than 0.01% N (including 0%), 0.01-0.1% Al, and at least one of 0.1-0.5% Ti and less than 0.8% Nb (including 0%), with the granular bainitic structure accounting for more than 80% (by area) in its sectional metallographic structure. Disclosed also herein is a process for producing said steel sheet.

公开(公告)号：US06900712B2

公开(公告)日：2005-05-31

申请号：US10627820

申请日：2003-07-28

申请人： Hidetaka Fujita ,  Takahiro Kashima

发明人： Hidetaka Fujita ,  Takahiro Kashima

IPC分类号： H01H71/10 ,  H01H71/24 ,  H01H71/52 ,  H01H9/00

CPC分类号： H01H71/1054 ,  H01H71/2472 ,  H01H71/522

摘要： In order to prevent a mistrip caused by a closing operation of a toggle link mechanism, a trip lever is not mounted on a fixed frame of an opening/closing mechanism, but is mounted on a yoke of a disengaging device serving as a support base for the trip lever. The opening/closing mechanism and the disengaging device are held in a common casing. As a result, an impact force, produced at the time of closing the contact between two contacts by the toggle link mechanism, is transmitted through the casing, so that such a mistrip can be prevented.

摘要翻译： 为了防止由肘节连杆机构的关闭操作引起的错位，跳​​闸杆不安装在打开/关闭机构的固定框架上，而是安装在用作支撑基座的分离装置的轭上 跳闸杆。 打开/关闭机构和分离装置保持在共同的壳体中。 结果，在通过肘节连杆机构闭合两个触点之间的接触时产生的冲击力被传送通过壳体，从而可以防止这种错误。