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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 steel plate having high dynamic deformation resistance and method of manufacturing the same
    3.
    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。

    Process and apparatus for preparing laminated heat-shrinkable strip with electric conductor wire embedded therein
    4.
    发明授权
    Process and apparatus for preparing laminated heat-shrinkable strip with electric conductor wire embedded therein 失效
    用于制备具有埋入其中的导电线的层压热收缩带的方法和装置

    公开(公告)号：US4406719A

    公开(公告)日：1983-09-27

    申请号：US347243

    申请日：1982-02-09

    申请人： Takuo Mitsumoto ,  Yuzo Takahashi ,  Mamoru Miyamoto

    发明人： Takuo Mitsumoto ,  Yuzo Takahashi ,  Mamoru Miyamoto

    IPC分类号： B29C53/00 ,  B29C43/22 ,  B29C61/06 ,  B29C65/00 ,  B29C65/20 ,  B29C65/66 ,  B32B37/00 ,  B32B37/30 ,  F16L47/22 ,  H01B13/06 ,  B32B31/08

    CPC分类号： B32B37/0076 ,  B29C43/22 ,  B29C43/228 ,  B29C61/0625 ,  B29C65/18 ,  B29C65/7891 ,  B29C66/00441 ,  B29C66/0242 ,  B29C66/0342 ,  B29C66/1122 ,  B29C66/342 ,  B29C66/433 ,  B29C66/45 ,  B29C66/72141 ,  B29C66/73715 ,  B29C66/8122 ,  B29C66/81465 ,  B29C66/8322 ,  B29C66/92443 ,  F16L47/22 ,  B29C2043/483 ,  B29C66/71 ,  B29C66/7212 ,  B29C70/687 ,  Y10S174/08 ,  Y10S428/913 ,  Y10T156/1084 ,  Y10T156/1343 ,  Y10T428/249934

    摘要： There are provided improved process and apparatus for preparing a laminated heat-shrinkable strip comprising upper and lower heat-shrinkable sheets fused together with an electric conductor wire sandwiched therebetween as means for covering and protecting joints of steel pipes of oil pipelines or cables. The process comprises the steps of: subjecting successive sections of a starting strip with the sheets unfused, while said section are stationary, to a pressing operation, each operation consisting of simultaneously prehot-pressing a first length which is slightly longer than half a predetermined length, hot-pressing a second length which is adjacent to said first length and which is the same or longer than said predetermined length, and cold-pressing a third length which is adjacent to said second length and which is slightly longer than half said predetermined length, and; shifting forward said starting strip by an amount corresponding to half said predetermined length after completion of each said pressing operation and before the start of each next pressing operation. The apparatus comprises a prehot press, a main hot press and a cold press arranged in a series for carrying out the pressing operation and a conveyor system for the intermittent shifting operation wherein a pair of looped tetrafluoroethylene fluorocarbon polymer belts of a webbed pattern between which the starting strip is sandwiched, the strip being subjected to the pressures by the presses through the belts.

    摘要翻译： 提供了一种用于制备层压热收缩带的改进的方法和装置，其包括与夹在其间的导电线熔合在一起的上部和下部热收缩片，作为用于覆盖和保护油管道或电缆的钢管的接头的装置。 该方法包括以下步骤：使起始带的连续部分在所述部分静止的同时将未张贴的片材连续压制成按压操作，每个操作包括同时预先压制略长于预定长度的一半的第一长度 热压与所述第一长度相邻并且与所述预定长度相同或更长的第二长度，以及冷压与所述第二长度相邻并且略长于所述预定长度的一半的第三长度 ，和 在每个所述按压操作完成之后和每次下一次按压操作开始之前，使所述启动条向前移动相当于所述预定长度的一半的量。 该装置包括预压机，主热压机和冷压机，用于执行压制操作的系列和用于间歇变速操作的输送机系统，其中一对环状四氟乙烯氟碳聚合物带，其中， 起始条被夹在中间，带通过压力机通过带受到压力。

    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。