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    Process for manufacturing a high carbon steel wire material having excellent wire drawability
    5.
    发明授权
    Process for manufacturing a high carbon steel wire material having excellent wire drawability 有权
    具有优异的拉丝性的高碳钢丝材料的制造方法

    公开(公告)号：US08470105B2

    公开(公告)日：2013-06-25

    申请号：US12466865

    申请日：2009-05-15

    申请人： Takuya Kochi ,  Shogo Murakami ,  Hiroshi Yaguchi ,  Takeshi Kuroda ,  Hidenori Sakai ,  Tomotada Maruo ,  Takaaki Minamida

    发明人： Takuya Kochi ,  Shogo Murakami ,  Hiroshi Yaguchi ,  Takeshi Kuroda ,  Hidenori Sakai ,  Tomotada Maruo ,  Takaaki Minamida

    IPC分类号： C21D8/06

    CPC分类号： C22C38/02 ,  C21D8/06 ,  C21D9/525 ,  C22C38/04

    摘要： A high carbon steel wire material which is made of high carbon steel as a raw material for wire products such as steel cords, bead wires, PC steel wires and spring steel, allows for these wire products to be manufactured efficiently at a high wire drawing rate and has excellent wire drawability and a manufacturing process thereof.This high carbon steel wire material is made of a steel material having specific contents of C, Si, Mn, P, S, N, Al and O, and the Bcc-Fe crystal grains of its metal structure have an average crystal grain diameter (Dave) of 20 μm or less and a maximum crystal grain diameter (Dmax) of 120 μm or less, preferably an area ratio of crystal grains having a diameter of 80 μm or more of 40% or less, an average sub grain diameter (dave) of 10 μm or less, a maximum sub grain diameter (dmax) of 50 μm or less and a (Dave/dave) ratio of the average crystal grain diameter (Dave) to the average sub grain diameter (dave) of 4.5 or less.

    摘要翻译： 由高碳钢作为钢丝绳，胎圈丝，PC钢丝和弹簧钢等钢丝制品的原料制成的高碳钢丝材料，能够以高拔丝率有效地制造这些线材 并且具有优异的拉丝性及其制造方法。 这种高碳钢丝材料由具有C，Si，Mn，P，S，N，Al和O的具体含量的钢材制成，并且其金属结构的Bcc-Fe晶粒具有平均晶粒直径（ Dave）为20μm以下，最大结晶粒径（Dmax）为120μm以下，优选直径为80μm以上的晶粒的面积比为40％以下，平均次粒径（dave ）为10μm以下，最大次粒径（dmax）为50μm以下，平均晶粒直径（Dave）与平均次晶粒直径（dave）的（Dave / dave）比为4.5以下 。

    WIRE ROD EXCELLENT IN WIRE-DRAWING WORKABILITY AND METHOD FOR PRODUCING SAME
    6.
    发明申请
    WIRE ROD EXCELLENT IN WIRE-DRAWING WORKABILITY AND METHOD FOR PRODUCING SAME 审中-公开
    电线优良的线条可靠性及其生产方法

    公开(公告)号：US20070277913A1

    公开(公告)日：2007-12-06

    申请号：US11754537

    申请日：2007-05-29

    申请人： Takuya Kochi ,  Takeshi Kuroda ,  Hidenori Sakai ,  Tomotada Maruo ,  Shogo Murakami ,  Hiroshi Yaguchi

    发明人： Takuya Kochi ,  Takeshi Kuroda ,  Hidenori Sakai ,  Tomotada Maruo ,  Shogo Murakami ,  Hiroshi Yaguchi

    IPC分类号： C22C38/00 ,  C21D9/52

    CPC分类号： C21D8/065 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

    摘要： Disclosed are a wire rod and a method therefor. The wire rod is excellent in wire-drawing workability, insusceptible to wire break in spite of an increase in wire-drawing rate, and reduction of area, and capable of extending a die life by suppressing die wear. The wire rod is made of steel containing C: 0.6 to 1.1%, Si: 0.1 to 2.0%, Mn: 0.1 to 1%, P: not more than 0.20%, S: not more than 0.20%, N: not more than 0.006%, Al: not more than 0.03%, and O: not more than 0.003%, the balance including Fe, and unavoidable impurities. Further, the wire rod comprises a pearlite structure wherein an area ratio of a second-phase ferrite is not more than 11.0%, and a pearlite lamellar spacing is not less than 120 μm.

    摘要翻译： 公开了一种线材及其方法。 该线材拉拔加工性优异，尽管拉丝速度增加，并且减少面积，并且能够通过抑制模具磨损而延长模具寿命，但不会发生断线。 该线材由C：0.6〜1.1％，Si：0.1〜2.0％，Mn：0.1〜1％，P：0.20以下，S：0.20％以下，N：不大于 0.006％，Al：0.03％以下，O：0.003％以下，余量包含Fe和不可避免的杂质。 此外，线材包括珠光体组织，其中第二相铁素体的面积比不大于11.0％，珠光体层间距不小于120μm。

    High Carbon steel wire material having excellent wire drawability and manufacturing process thereof
    7.
    发明申请
    High Carbon steel wire material having excellent wire drawability and manufacturing process thereof 审中-公开
    具有优异的拉丝性的高碳钢丝材料及其制造方法

    公开(公告)号：US20060130946A1

    公开(公告)日：2006-06-22

    申请号：US11296299

    申请日：2005-12-08

    申请人： Takaaki Minamida ,  Takeshi Kuroda ,  Takuya Kochi ,  Hiroshi Yaguchi

    发明人： Takaaki Minamida ,  Takeshi Kuroda ,  Takuya Kochi ,  Hiroshi Yaguchi

    IPC分类号： C21D9/52

    CPC分类号： C22C38/02 ,  C21D8/06 ,  C21D9/525 ,  C22C38/04

    摘要： A high carbon steel wire material which is made of high carbon steel as a raw material for wire products such as steel cords, bead wires, PC steel wires and spring steel, allows for these wire products to be manufactured efficiently at a high wire drawing rate and has excellent wire drawability and a manufacturing process thereof. This high carbon steel wire material is made of a steel material having specific contents of C, Si, Mn, P, S, N, Al and O, and the Bcc-Fe crystal grains of its metal structure have an average crystal grain diameter (Dave) of 20 μm or less and a maximum crystal grain diameter (Dmax) of 120 μm or less, preferably an area ratio of crystal grains having a diameter of 80 μm or more of 40% or less, an average sub grain diameter (dave) of 10 μm or less, a maximum sub grain diameter (dmax) of 50 μm or less and a (Dave/dave) ratio of the average crystal grain diameter (Dave) to the average sub grain diameter (dave) of 4.5 or less.

    摘要翻译： 由高碳钢作为钢丝绳，胎圈丝，PC钢丝和弹簧钢等钢丝制品的原料制成的高碳钢丝材料，能够以高拔丝率有效地制造这些线材 并且具有优异的拉丝性及其制造方法。 这种高碳钢丝材料由具有C，Si，Mn，P，S，N，Al和O的具体含量的钢材制成，并且其金属结构的Bcc-Fe晶粒具有平均晶粒直径（ 小于或等于20μm，最大晶粒直径（D max max）为120μm以下，优选直径为80μm的晶粒的面积比 40％以下的平均次粒径为10μm以下，最大次粒径（d×max）为50μm以下， 或更小，平均晶粒直径（D大于等于）与平均次晶粒直径（D平均粒径）之比（D大于或等于） 小于或等于4.5）。

    SPRING STEEL WIRE ROD EXCELLENT IN DECARBURIZATION RESISTANCE AND WIRE DRAWING WORKABILITY AND METHOD FOR PRODUCING SAME
    9.
    发明申请
    SPRING STEEL WIRE ROD EXCELLENT IN DECARBURIZATION RESISTANCE AND WIRE DRAWING WORKABILITY AND METHOD FOR PRODUCING SAME 有权
    弹簧钢丝绳在脱铝电阻和线图中的可行性和生产方法

    公开(公告)号：US20090065105A1

    公开(公告)日：2009-03-12

    申请号：US12192437

    申请日：2008-08-15

    申请人： Takuya Kochi ,  Shogo Murakami ,  Takeshi Kuroda ,  Hiromichi Tsuchiya

    发明人： Takuya Kochi ,  Shogo Murakami ,  Takeshi Kuroda ,  Hiromichi Tsuchiya

    IPC分类号： C21D9/02 ,  C22C38/18

    CPC分类号： C22C38/18

    摘要： Disclosed is a spring steel wire rod that comprises C in a range of 0.35 to 0.65% (mass %, the same applies to respective elements described hereinafter), Si in a range of 1.4 to 2.2%, Mn in a range of 0.10 to 1.0%, Cr in a range of 0.1 to 2.0%, P not more than 0.025% % excluded), and S not more than 0.025% (0% excluded), balance comprising iron, and unavoidable impurities, wherein an average grain size Dc of a central part of the steel wire rod is not more than 80 μtm while an average grain size Ds of a surface layer part of the steel wire rod is not less than 3.0 μm.

    摘要翻译： 公开了一种弹簧钢线材，其包含在0.35至0.65％范围内的C（质量％，同样适用于下文所述的元素），Si在1.4至2.2％的范围内，Mn在0.10至1.0的范围内 ％，0.1〜2.0％范围的Cr，不超过0.025％的P），S：0.025％以下（0％除外），余量为铁和不可避免的杂质，其中平均粒径Dc为 该钢线材的中心部分为80μm以上，钢线材的表层部的平均粒径Ds为3.0μm以上。

    Spring steel wire rod excellent in decarburization resistance and wire drawing workability and method for producing same
    10.
    发明授权
    Spring steel wire rod excellent in decarburization resistance and wire drawing workability and method for producing same 有权
    耐脱碳性和拉丝加工性优异的弹簧钢线材及其制造方法

    公开(公告)号：US09005378B2

    公开(公告)日：2015-04-14

    申请号：US12192437

    申请日：2008-08-15

    申请人： Takuya Kochi ,  Shogo Murakami ,  Takeshi Kuroda ,  Hiromichi Tsuchiya

    发明人： Takuya Kochi ,  Shogo Murakami ,  Takeshi Kuroda ,  Hiromichi Tsuchiya

    IPC分类号： C22C38/18

    CPC分类号： C22C38/18

    摘要： Disclosed is a spring steel wire rod that comprises C in a range of 0.35 to 0.65% (mass %, the same applies to respective elements described hereinafter), Si in a range of 1.4 to 2.2%, Mn in a range of 0.10 to 1.0%, Cr in a range of 0.1 to 2.0%, P not more than 0.025% (0% excluded), and S not more than 0.025% (0% excluded), balance comprising iron, and unavoidable impurities, wherein an average grain size Dc of a central part of the steel wire rod is not more than 80 μm while an average grain size Ds of a surface layer part of the steel wire rod is not less than 3.0 μm.

    摘要翻译： 公开了一种弹簧钢线材，其包含在0.35至0.65％范围内的C（质量％，同样适用于下文所述的元素），Si在1.4至2.2％的范围内，Mn在0.10至1.0的范围内 ％，Cr为0.1〜2.0％，P为0.025％以下（不包括0％），S为0.025％以下（0％除外），余量为铁和不可避免的杂质，平均粒径 钢线材的中心部的Dc为80μm以下，钢线材的表层部的平均粒径Ds为3.0μm以上。