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    High-strength hot-rolled steel sheet and method of manufacturing the same
    1.
    发明授权
    High-strength hot-rolled steel sheet and method of manufacturing the same 有权
    高强度热轧钢板及其制造方法

    公开(公告)号：US09121079B2

    公开(公告)日：2015-09-01

    申请号：US13583537

    申请日：2011-03-09

    申请人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

    发明人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

    IPC分类号： C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  B21B3/00 ,  C21D9/46 ,  C22C38/00

    CPC分类号： C21D8/0226 ,  B21B3/00 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/005 ,  C22C38/06 ,  C22C38/14

    摘要： On a cross section with a sheet width direction of a high-strength hot-rolled steel sheet set as a normal line, with regard to an inclusion having a major diameter of 3.0 μm or more, a maximum of a major diameter/minor diameter ratio expressed by (a major diameter of the inclusion)/(a minor diameter of the inclusion) is 8.0 or less, and a sum total of a rolling direction length per 1 mm2 cross section of a predetermined inclusion group composed of plural inclusions each having a major diameter of 3.0 μm or more and a predetermined extended inclusion having a length in a rolling direction of 30 μm or more is 0.25 mm or less. The plural inclusions composing the predetermined inclusion group congregate in both the rolling direction and a direction perpendicular to the rolling direction 50 μm or less apart from each other. The predetermined extended inclusion is spaced over 50 μm apart from all the inclusions each having a major diameter of 3.0 μm or more in at least either the rolling direction or the direction perpendicular to the rolling direction.

    摘要翻译： 在作为法线设定的高强度热轧钢板的板宽方向的截面上，对于长径为3.0μm以上的夹杂物，最大直径/小直径比的最大值 由（夹杂物的主直径）/（夹杂物的微小直径）表示为8.0以下，并且由包含多个夹杂物的预定夹杂物组成的每1mm 2截面的轧制方向长度的总和 长径为3.0μm以上，预定长度为30μm以上的轧制方向的延伸夹杂物为0.25mm以下。 组成预定夹杂物的多个夹杂物在轧制方向和垂直于轧制方向的方向上聚集在50μm以下。 预定的延伸夹杂物在至少轧制方向或与轧制方向垂直的方向的至少任一个中具有大于3.0μm或更大的所有夹杂物的间隔超过50μm。

    HIGH-STRENGTH HOT-ROLLED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME
    6.
    发明申请
    HIGH-STRENGTH HOT-ROLLED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME 有权
    高强度热轧钢板及其制造方法

    公开(公告)号：US20130000791A1

    公开(公告)日：2013-01-03

    申请号：US13583537

    申请日：2011-03-09

    申请人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

    发明人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

    IPC分类号： C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/38 ,  C22C38/08 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C21D11/00 ,  C22C38/14

    CPC分类号： C21D8/0226 ,  B21B3/00 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/005 ,  C22C38/06 ,  C22C38/14

    摘要： On a cross section with a sheet width direction of a high-strength hot-rolled steel sheet set as a normal line, with regard to an inclusion having a major diameter of 3.0 μm or more, a maximum of a major diameter/minor diameter ratio expressed by (a major diameter of the inclusion)/(a minor diameter of the inclusion) is 8.0 or less, and a sum total of a rolling direction length per 1 mm2 cross section of a predetermined inclusion group composed of plural inclusions each having a major diameter of 3.0 μm or more and a predetermined extended inclusion having a length in a rolling direction of 30 μm or more is 0.25 mm or less. The plural inclusions composing the predetermined inclusion group congregate in both the rolling direction and a direction perpendicular to the rolling direction 50 μm or less apart from each other. The predetermined extended inclusion is spaced over 50 μm apart from all the inclusions each having a major diameter of 3.0 μm or more in at least either the rolling direction or the direction perpendicular to the rolling direction.

    摘要翻译： 在作为法线设定的高强度热轧钢板的板宽方向的截面上，对于长径为3.0μm以上的夹杂物，最大直径/小直径比的最大值 由（夹杂物的主直径）/（夹杂物的微小直径）表示为8.0以下，并且由包含多个夹杂物的预定夹杂物组成的每1mm 2截面的轧制方向长度的总和 长径为3.0μm以上，预定长度为30μm以上的轧制方向的延伸夹杂物为0.25mm以下。 组成预定夹杂物的多个夹杂物在轧制方向和垂直于轧制方向的方向上聚集在50μm以下。 预定的延伸夹杂物在至少轧制方向或与轧制方向垂直的方向的至少任一个中具有大于3.0μm或更大的所有夹杂物的间隔超过50μm。

    High-strength steel sheet highly resistant to dynamic deformation and excellent in workability and process for the production thereof
    7.
    发明授权
    High-strength steel sheet highly resistant to dynamic deformation and excellent in workability and process for the production thereof 有权
    高强度钢板高度抗动态变形，加工性优良，制造方法优异

    公开(公告)号：US06544354B1

    公开(公告)日：2003-04-08

    申请号：US09355435

    申请日：1999-07-28

    申请人： Osamu Kawano ,  Junichi Wakita ,  Yuzo Takahashi ,  Hidesato Mabuchi ,  Manabu Takahashi ,  Akihiro Uenishi ,  Yukihisa Kuriyama ,  Riki Okamoto ,  Yasuharu Sakuma

    发明人： Osamu Kawano ,  Junichi Wakita ,  Yuzo Takahashi ,  Hidesato Mabuchi ,  Manabu Takahashi ,  Akihiro Uenishi ,  Yukihisa Kuriyama ,  Riki Okamoto ,  Yasuharu Sakuma

    IPC分类号： C22C3804

    CPC分类号： C21D8/0226 ,  C21D8/0426 ,  C21D8/0436 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005

    摘要： The object of the present invention is to provide high-strength steel sheets exhibiting high impact energy absorption properties, as steel sheets to be used for shaping and working into such parts to front side members which absorb impact energy upon collision, as well as a method for their production. The high-strength steel sheets of the invention which exhibit high impact energy absorption properties are press formable high-strength steel sheets with high flow stress during dynamic deformation characterized in that the microstructure of the steel sheets in their final form is a composite microstructure of a mixture of ferrite and/or bainite, either of which is the dominant phase, and a third phase including retained austenite at a volume fraction between 3% and 50%, wherein the difference between the static tensile strength as when deformed in a strain rate range of 5×10−4˜5×10−3 (l/s) after pre-deformation at an equivalent strain of greater than 0% and less than or equal to 10%, and the dynamic tensile strength &sgr;d when deformed at a strain rate of 5×102˜5×103 (l/sec) after the pre-deformation, i.e. &sgr;d−&sgr;s, is at least 60 MPa, and the work hardening coefficient between 5% and 10% of a strain is at least 0.130.

    摘要翻译： 本发明的目的是提供一种表现出高冲击能吸收性能的高强度钢板，作为用于成形和加工成这些部件的钢板，该前端侧构件在碰撞时吸收冲击能量，以及方法 为他们的生产。 表现出高冲击能吸收性能的本发明的高强度钢板是动态变形时具有高流动应力的可压制高强度钢板，其特征在于，最终形式的钢板的微结构是 铁素体和/或贝氏体的混合物，其中的任一种是主要相，第三相包括体积分数在3％至50％之间的残余奥氏体，其中在应变速率范围内变形时的静态拉伸强度之间的差异 在大于0％且小于或等于10％的等效应变下预变形后为5×10 -4〜5×10 -3（1 / s），当应变速率为5×102〜 在预变形之后的5×10 3（1 / sec），即Sigmad-sigmas，至少为60MPa，并且应变的5％和10％之间的加工硬化系数为至少0.130。

    High-strength steel plate having high dynamic deformation resistance and method of manufacturing the same
    8.
    发明授权
    High-strength steel plate having high dynamic deformation resistance and method of manufacturing the same 有权
    具有高动态变形阻力的高强度钢板及其制造方法

    公开(公告)号：US06319338B1

    公开(公告)日：2001-11-20

    申请号：US09308986

    申请日：1999-07-06

    申请人： Osamu Kawano ,  Yuzo Takahashi ,  Junichi Wakita ,  Hidesato Mabuchi ,  Manabu Takahashi ,  Akihiro Uenishi ,  Riki Okamoto ,  Yukihisa Kuriyama ,  Yasuharu Sakuma

    发明人： Osamu Kawano ,  Yuzo Takahashi ,  Junichi Wakita ,  Hidesato Mabuchi ,  Manabu Takahashi ,  Akihiro Uenishi ,  Riki Okamoto ,  Yukihisa Kuriyama ,  Yasuharu Sakuma

    IPC分类号： C22C3308

    CPC分类号： C21D8/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008

    摘要： The object of the present invention is to provide high-strength steel sheets exhibiting high impact energy absorption properties, as steel materials, to be used for shaping and working into such parts as front side members of automobiles which absorb impact energy upon collision, as well as a method for their production. The high-strength steel sheets of the invention which exhibit high impact energy absorption properties are high-strength steel sheets with high flow stress during dynamic deformation characterized in that the microstructure of the steel sheets in their final form is a composite microstructure of a mixture of ferrite and/or bainite, either of which is the dominant phase, and a third phase including retained austenite at a volume fraction between 3% and 50%, wherein the average value &sgr;dyn (MPa) of the flow stress in the range of 3˜10% of equivalent strain when deformed in a strain rate range of 5×102˜5×103 (1/sec) after pre-deformation of greater than 0% and less than or equal to 10% of equivalent strain, satisfies the inequality: &sgr;dyn≧0.766×TS+250 as expressed in terms of the maximum stress TS (MPa) in the static tensile test as measured in a strain rate range of 5×10−4˜5×10−3 (1/s) without deformation, and the work hardening coefficient between 1% and 5% of a strain is at least 0.080.

    摘要翻译： 本发明的目的是提供作为钢材的高冲击能量吸收性能的高强度钢板，用于成形和加工成在碰撞时吸收冲击能量的汽车前侧部件的部件，以及 作为其生产方法。 表现出高冲击能吸收性能的本发明的高强度钢板是在动态变形过程中具有高流动应力的高强度钢板，其特征在于，最终形式的钢板的微结构是复合组织， 铁素体和/或贝氏体，其中任何一个是主要相，第三相包括体积分数在3％至50％之间的残余奥氏体，其中流动应力的平均值sigmadyn（MPa）在3〜 在大于0％且小于等于等效应变的10％的预变形后，在5×102〜5×103（1 / sec）的应变速率范围内变形时的10％的当量应变满足以下不等式：sigmadyn> = 0.766 在静态拉伸试验中以5×10 -4〜5×10 -3（1 / s）的应变速度范围测定的无变形的最大应力TS（MPa）表示的xTS + 250，加工硬化系数1 ％和5％的菌株在leas t 0.080。

    Hot rolled steel sheet and method for production thereof
    9.
    发明申请
    Hot rolled steel sheet and method for production thereof 有权
    热轧钢板及其制造方法

    公开(公告)号：US20060266445A1

    公开(公告)日：2006-11-30

    申请号：US10571023

    申请日：2004-09-02

    申请人： Tatsuo Yokoi ,  Tetsuya Yamada ,  Osamu Kawano

    发明人： Tatsuo Yokoi ,  Tetsuya Yamada ,  Osamu Kawano

    IPC分类号： C22C38/00 ,  C21D8/00

    CPC分类号： C23C2/02 ,  C21D8/0226 ,  C21D2201/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/28 ,  Y10T428/12799

    摘要： An exemplary hot rolled steel sheet can included, in terms of percent by mass, C of 0.01 to 0.2%; Si of 0.01 to 2%; Mn of 0.1 to 2%; P of ≦0.1%; S of ≦0.03%; Al of 0.001 to 0.1%; N of ≦0.01%; and as a remainder, Fe and unavoidable impurities. For example, a microstructure can be substantially a homogeneous continuous-cooled microstructure, and an average grain size of the microstructure may be more than 8 mm and 30 mm or less. An exemplary method for manufacturing a hot rolled steel sheet can include subjecting a slab having the above composition to a rough rolling so as to obtain a rough rolled bar, subjecting the rough rolled bar to a finish rolling so as to obtain a rolled steel under conditions in which a finishing temperature is (Ar3 transformation point +50° C.) or more; and starting cooling the rolled steel after 0.5 seconds or more pass from the end of the finish rolling at a temperature of the Ar3 transformation point or more. At least in the temperature range from the Ar3 transformation point can be cooled to 500° C. at a cooling rate of 80° C./sec or more, a further cooling can be effectuated until the temperature is 500° C. or less to obtain a hot rolled steel sheet and coiling the hot rolled steel sheet.

    摘要翻译： 作为热轧钢板，可以以质量％计含有0.01〜0.2％的C， Si为0.01〜2％ Mn为0.1〜2％ P <0.1％; S <0.03％; Al为0.001〜0.1％; N <0.01％; 作为余量，Fe和不可避免的杂质。 例如，微结构可以是基本上均匀的连续冷却微结构，并且微结构的平均晶粒尺寸可以大于8mm和30mm或更小。 用于制造热轧钢板的示例性方法可以包括对具有上述组成的板坯进行粗轧以获得粗轧条，对粗轧条进行精轧，以在条件下获得轧制钢 其中终轧温度为（Ar3相变点+ 50℃）以上; 在Ar3相变点以上的温度下，从精轧结束0.5秒钟以上开始冷却轧制钢。 至少在Ar 3相变点的温度范围内，可以以80℃/秒以上的冷却速度将其冷却至500℃，进一步冷却至500℃以下 得到热轧钢板并卷取热轧钢板。

    Multiplex communication arrangement capable of selectively monitoring active multiplexers and of simultaneously checking an input to a stand-by demultiplexer
    10.
    发明授权
    Multiplex communication arrangement capable of selectively monitoring active multiplexers and of simultaneously checking an input to a stand-by demultiplexer 失效
    能够选择性地监视主动多路复用器并且同时检查到待机解复用器的输入的多路复用通信布置

    公开(公告)号：US4908818A

    公开(公告)日：1990-03-13

    申请号：US66940

    申请日：1987-06-25

    申请人： Osamu Kawano

    发明人： Osamu Kawano

    IPC分类号： H04J3/04 ,  H04J3/14

    CPC分类号： H04J3/14

    摘要： In a multiplex communication arrangement of an N:1 redundancy configuration, each multiplexer comprises a multiplexing circuit for multiplexing a plurality of multiplexer input signals into a multiplexed signal and an encoder for encoding the multiplexed signal into an encoded signal of self-checking codes, such as the known CRC codes. Into a decoder output signal, a decoder of each demultiplexer decodes a demultiplexer input signal which is in a form of the self-checking codes. As a selected signal, a selector selects one of the decoder output signal and the multiplexed signal produced in one of the multiplexers, (N+1) in number, that the selector selects as a selected multiplexer. A demultiplexing circuit demultiplexes the selected signal into a plurality of demultiplexer output signals. A bit-by-bit comparator compares the multiplexer input signal of the selected multiplexer with the demultiplexer output signals which are produced in one of the demultiplexers, (N+1) in number, for the multiplexed signal produced in the selected multiplexer. Inasmuch as such demultiplexer produces the demultiplexer output signals for a utilization device when the demultiplexer in question is an active one, it follows that the above-mentioned one of the demultiplexers is a stand-by one.

    摘要翻译： 在N：1冗余配置的多路复用通信装置中，每个多路复用器包括用于将多路复用器输入信号复用为多路复用信号的多路复用电路和用于将多路复用信号编码为自检码编码信号的编码器， 作为已知的CRC码。 在解码器输出信号中，每个解复用器的解码器解码以自检码形式的解复用器输入信号。 作为选择信号，选择器选择解码器输出信号和多路复用器之一（N + 1）中产生的复用信号中的一个，选择器选择作为选择的多路复用器。 解复用电路将所选择的信号解复用为多个解复用器输出信号。 逐位比较器将所选择的多路复用器的多路复用器输入信号与在所选多路复用器中产生的多路复用信号中产生的解复用器（N + 1）之一产生的解复用器输出信号进行比较。 由于这种解复用器在所讨论的解复用器是有效的时产生用于利用设备的解复用器输出信号，所以上述一个解复用器是备用的。