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    Ultra soft high carbon hot-rolled steel sheets and manufacturing method thereof
    2.
    发明申请
    Ultra soft high carbon hot-rolled steel sheets and manufacturing method thereof 失效
    超软高碳热轧钢板及其制造方法

    公开(公告)号：US20090065106A1

    公开(公告)日：2009-03-12

    申请号：US11919964

    申请日：2006-09-19

    申请人： Hideyuki Kimura ,  Takeshi Fujita ,  Nobuyuki Nakamura ,  Satoshi Ueoka ,  Naoya Aoki ,  Kenichi Mitsuzuka

    发明人： Hideyuki Kimura ,  Takeshi Fujita ,  Nobuyuki Nakamura ,  Satoshi Ueoka ,  Naoya Aoki ,  Kenichi Mitsuzuka

    IPC分类号： C21D8/02 ,  C22C38/00 ,  C21D6/02

    CPC分类号： C22C38/02 ,  C21D1/32 ,  C21D6/008 ,  C21D8/0263 ,  C21D9/46 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/32

    摘要： The present invention provides an ultra soft high carbon hot-rolled steel sheet. The ultra soft high carbon hot-rolled steel sheet contains 0.2% to 0.7% of C, 0.01% to 1.0% of Si, 0.1% to 1.0% of Mn, 0.03% or less of P, 0.035% or less of S, 0.08% or less of Al, 0.01% or less of N, and the balance being Fe and incidental impurities and further contains 0.0010% to 0.0050% of B and 0.05% to 0.30% of Cr in some cases. In the texture of the steel sheet, an average ferrite grain diameter is 20 μm or more, a volume ratio of ferrite grains having a grain diameter of 10 μm or more is 80% or more, and an average carbide grain diameter is in the range of 0.10 to less than 2.0 μm. In addition, the steel sheet is manufactured by the steps, after rough rolling, performing finish rolling at a reduction ratio of 10% or more and at a finish temperature of (Ar3−20° C.) or more in a final pass, then performing first cooling within 2 seconds after the finish rolling to a cooling stop temperature of 600° C. or less at a cooling rate of more than 120° C./sec, then performing second cooling so that the steel thus processed is held at 600° C. or less, then performing coiling at 580° C. or less, followed by pickling, and then performing spheroidizing annealing at a temperature in the range of 680° C. to the Ac1 transformation point.

    摘要翻译： 本发明提供一种超软质高碳热轧钢板。 超软质高碳热轧钢板含有C：0.2〜0.7％，Si：0.01〜1.0％，Mn：0.1〜1.0％，P：0.03％以下，S：0.035％以下，0.08以下 Al以下，Al：0.01％以下，余量为Fe和附带杂质，在某些情况下还含有0.0010〜0.0050％的B和0.05〜0.30％的Cr。 在钢板的织构中，平均铁素体晶粒直径为20μm以上，粒径为10μm以上的铁素体晶粒的体积比为80％以上，平均碳化物粒径为 为0.10〜小于2.0μm。 另外，在粗轧后，在最终通过时以10％以上的还原率和最终温度（Ar 3〜20℃）以上的精轧进行精轧，然后， 在精轧后2秒内进行冷却至冷却停止温度600℃以下，冷却速度大于120℃/秒，然后进行第二次冷却，使被处理钢被保持在600℃ ℃以下，然后在580℃以下进行卷取，然后酸洗，然后在680℃的温度下进行Ac1相变点的球化退火。

    Method for manufacturing an ultra soft high carbon hot-rolled steel sheet
    4.
    发明授权
    Method for manufacturing an ultra soft high carbon hot-rolled steel sheet 失效
    超软高碳热轧钢板的制造方法

    公开(公告)号：US07909950B2

    公开(公告)日：2011-03-22

    申请号：US11919964

    申请日：2006-09-19

    申请人： Hideyuki Kimura ,  Takeshi Fujita ,  Nobuyuki Nakamura ,  Satoshi Ueoka ,  Naoya Aoki ,  Kenichi Mitsuzuka

    发明人： Hideyuki Kimura ,  Takeshi Fujita ,  Nobuyuki Nakamura ,  Satoshi Ueoka ,  Naoya Aoki ,  Kenichi Mitsuzuka

    IPC分类号： C21D8/00

    CPC分类号： C22C38/02 ,  C21D1/32 ,  C21D6/008 ,  C21D8/0263 ,  C21D9/46 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/32

    摘要： The present invention provides an ultra soft high carbon hot-rolled steel sheet. The ultra soft high carbon hot-rolled steel sheet contains 0.2% to 0.7% of C, 0.01% to 1.0% of Si, 0.1% to 1.0% of Mn, 0.03% or less of P, 0.035% or less of S, 0.08% or less of Al, 0.01% or less of N, and the balance being Fe and incidental impurities and further contains 0.0010% to 0.0050% of B and 0.05% to 0.30% of Cr in some cases. In the texture of the steel sheet, an average ferrite grain diameter is 20 μm or more, a volume ratio of ferrite grains having a grain diameter of 10 μm or more is 80% or more, and an average carbide grain diameter is in the range of 0.10 to less than 2.0 μm. In addition, the steel sheet is manufactured by the steps, after rough rolling, performing finish rolling at a reduction ratio of 10% or more and at a finish temperature of (Ar3−20° C.) or more in a final pass, then performing first cooling within 2 seconds after the finish rolling to a cooling stop temperature of 600° C. or less at a cooling rate of more than 120° C./sec, then performing second cooling so that the steel thus processed is held at 600° C. or less, then performing coiling at 580° C. or less, followed by pickling, and then performing spheroidizing annealing at a temperature in the range of 680° C. to the Ac1 transformation point.

    摘要翻译： 本发明提供一种超软质高碳热轧钢板。 超软质高碳热轧钢板含有C：0.2〜0.7％，Si：0.01〜1.0％，Mn：0.1〜1.0％，P：0.03％以下，S：0.035％以下，0.08以下 Al以下，Al：0.01％以下，余量为Fe和附带杂质，在某些情况下还含有0.0010〜0.0050％的B和0.05〜0.30％的Cr。 在钢板的织构中，平均铁素体晶粒直径为20μm以上，粒径为10μm以上的铁素体晶粒的体积比为80％以上，平均碳化物粒径为 为0.10〜小于2.0μm。 另外，在粗轧后，在最终通过时以10％以上的还原率和最终温度（Ar 3〜20℃）以上的精轧进行精轧，然后， 在精轧后2秒内进行冷却至冷却停止温度600℃以下，冷却速度大于120℃/秒，然后进行第二次冷却，使被处理钢被保持在600℃ ℃以下，然后在580℃以下进行卷取，然后酸洗，然后在680℃的温度下进行Ac1相变点的球化退火。

    Ball Screw and Manufacturing Method of Nut for Ball Screw
    5.
    发明申请
    Ball Screw and Manufacturing Method of Nut for Ball Screw 审中-公开
    滚珠丝杠螺母和螺母的制造方法

    公开(公告)号：US20120325036A1

    公开(公告)日：2012-12-27

    申请号：US13581210

    申请日：2011-03-16

    申请人： Toru Harada ,  Koji Hashimoto ,  Tsuyoshi Ito ,  Tomofumi Yamashita ,  Naoya Aoki

    发明人： Toru Harada ,  Koji Hashimoto ,  Tsuyoshi Ito ,  Tomofumi Yamashita ,  Naoya Aoki

    IPC分类号： F16H25/22 ,  B21K1/70

    CPC分类号： B21K1/70 ,  B21J5/025 ,  B21J5/12 ,  B21J13/025 ,  B21K1/04 ,  B21K21/12 ,  B21K21/16 ,  B21K23/00 ,  F16H25/2223 ,  Y10T74/19767

    摘要： A ball screw is provided in which an outer circumferential formation is formed at a portion facing a ball circulating passage out of outer circumferential surface of a nut. The ball screw includes: a screw shaft having on its outer circumferential surface a screw groove; a nut having on its inner circumferential surface a screw groove facing the screw groove; a plurality of balls rollably loaded in a spiral ball rolling passage formed by both screw grooves; and a ball circulating passage to return the balls from a start point to an end point of the ball rolling passage for recirculation. The ball circulating passage is a concaved groove formed by concaving a groove on a part of the cylindrical inner circumferential surface of the nut by plastic working. Then, a flange is integrally provided at a portion facing the ball circulating passage and the screw groove.

    摘要翻译： 提供一种滚珠丝杠，其中在与螺母的外周面相对的面向球循环通道的部分处形成有外周部结构。 滚珠丝杠包括：螺杆轴，其外周面上具有螺纹槽; 螺母在其内周面上具有面向螺纹槽的螺纹槽; 可滚动地装载在由两个螺纹槽形成的螺旋滚珠滚动通道中的多个滚珠; 以及球循环通道，用于将球从起始点返回到球滚动通道的终点以用于再循环。 球循环通道是通过塑性加工在螺母的圆柱形内圆周表面的一部分上凹入凹槽而形成的凹槽。 然后，在面对球循环通道和螺纹槽的部分上一体地设有凸缘。

    HIGH-CARBON HOT-ROLLED STEEL SHEET AND METHOD FOR PRODUCING THE SAME
    7.
    发明申请
    HIGH-CARBON HOT-ROLLED STEEL SHEET AND METHOD FOR PRODUCING THE SAME 审中-公开
    高碳热轧钢板及其制造方法

    公开(公告)号：US20090260729A1

    公开(公告)日：2009-10-22

    申请号：US12373903

    申请日：2007-08-06

    申请人： Shunji Iizuka ,  Kazuhiro Seto ,  Akio Kobayashi ,  Kenichi MItsuzuka ,  Naoya Aoki ,  Hideyuki Kimura ,  Nobuyuki Nakamura

    发明人： Shunji Iizuka ,  Kazuhiro Seto ,  Akio Kobayashi ,  Kenichi MItsuzuka ,  Naoya Aoki ,  Hideyuki Kimura ,  Nobuyuki Nakamura

    IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/12 ,  C22C38/14

    CPC分类号： C22C38/02 ,  C21D1/32 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/0273 ,  C21D9/46 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06

    摘要： A high-carbon hot-rolled steel sheet with excellent width-direction homogeneity is provided. The steel sheet contains 0.2% to 0.7% carbon, 0.01% to 1.0% silicon, 0.1% to 1.0% manganese, 0.03% or less phosphorus, 0.035% or less sulfur, 0.08% or less aluminum, and 0.01% or less nitrogen, and the balance is iron and incidental impurities. The structure is such that the average ferrite grain size of edge parts of the steel sheet is less than 35 μm, the average ferrite grain size of a part closer to the center of the steel sheet than the edge parts is less than 20 μm, and the average carbide grain size is 0.10 μm or more and less than 2.0 μm. The steel sheet is produced by roughly rolling the steel, finish-rolling the steel at a finishing temperature of more than (Ar3+40° C.), cooling the steel at a cooling rate of more than 120° C./s within two seconds after the finish rolling to a cooling termination temperature of more than 550° C. and less than 650° C., coiling the steel at a temperature of 550° C. or less, pickling the steel, and subjecting the steel to spheroidizing annealing at a temperature of 670° C. to the Ac1 transformation point by a batch annealing method.

    摘要翻译： 提供了具有优异的宽度方向均匀性的高碳热轧钢板。 钢板含有0.2〜0.7％的碳，0.01〜1.0％的硅，0.1〜1.0％的锰，0.03％以下的磷，0.035％以下的硫，0.08％以下的铝和0.01％以下的氮， 余量是铁和杂质。 该结构使得钢板边缘部分的平均铁素体晶粒尺寸小于35μm，比边缘部分更靠近钢板中心的部分的平均铁素体晶粒度小于20μm，并且 平均碳化物粒径为0.10μm以上且小于2.0μm。 钢板通过大致轧制钢材，在超过（Ar3 + 40℃）的终轧温度下对钢进行精轧，以2℃以上的冷却速度冷却钢板 精轧后的冷却终止温度为550℃以上且小于650℃，在550℃以下的温度下卷取钢，对钢进行酸洗，对钢进行球化退火 通过分批退火法在270℃的温度下与Ac1相变点反应。