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    Steel wire rod
    4.
    发明授权
    Steel wire rod 有权
    钢丝杆

    公开(公告)号：US08092916B2

    公开(公告)日：2012-01-10

    申请号：US12409679

    申请日：2009-03-24

    申请人： Mikako Takeda ,  Shohei Nakakubo ,  Takashi Onishi ,  Masumi Nishimura ,  Hidenori Sakai ,  Tomotada Maruo

    发明人： Mikako Takeda ,  Shohei Nakakubo ,  Takashi Onishi ,  Masumi Nishimura ,  Hidenori Sakai ,  Tomotada Maruo

    IPC分类号： B32B15/02 ,  B32B15/04

    CPC分类号： C22C38/04 ,  C21D1/74 ,  C21D8/065 ,  C21D9/00 ,  C21D9/52 ,  C21D9/525 ,  C22C38/00 ,  C22C38/02 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/265

    摘要： An FeO layer including fine crystal grains having random orientation is formed as inner layer scale on the surface of the steel wire rod containing C: 0.05-1.2 mass % (hereinafter referred to as “%”), Si: 0.01-0.50%, Mn: 0.1-1.5%, P: 0.02% or below, S: 0.02% or below, N: 0.005% or below, an Fe2SiO4 layer with the thickness: 0.01-1.0 μm is formed in the boundary face between the FeO layer of the inner layer scale and steel, and the thickness of the inner layer scale is 1-40% of the total scale thickness. In another aspect, the maximum grain size of the crystal grain of the inner layer scale is 5.0 μm or below and the average grain size is 2.0 μm or below.

    摘要翻译： 在含有C：0.05〜1.2质量％（以下称为“％”），Si：0.01-0.50％，Mn：0.01-0.50％的钢丝网的表面上形成包含具有随机取向的细晶粒的FeO层作为内层标尺 ：0.1-1.5％，P：0.02％以下，S：0.02％以下，N：0.005％以下，在FeO层的FeO层之间的边界面上形成厚度为0.01〜1.0μm的Fe 2 SiO 4层 内层刻度和钢，内层刻度的厚度为总刻度厚度的1-40％。 另一方面，内层鳞片的晶粒的最大粒径为5.0μm以下，平均粒径为2.0μm以下。

    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 。

    HIGH-STRENGTH SPRING STEEL
    6.
    发明申请
    HIGH-STRENGTH SPRING STEEL 审中-公开
    高强度弹簧钢

    公开(公告)号：US20120285585A1

    公开(公告)日：2012-11-15

    申请号：US13511541

    申请日：2010-12-21

    申请人： Sayaka Nagamatsu ,  Tomotada Maruo ,  Nao Yoshihara

    发明人： Sayaka Nagamatsu ,  Tomotada Maruo ,  Nao Yoshihara

    IPC分类号： C22C38/34 ,  C22C38/22 ,  C22C38/16 ,  C22C38/08 ,  C21D9/02 ,  C22C38/02

    CPC分类号： C21D9/02 ,  C21D1/02 ,  C21D7/06 ,  C21D8/065 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/34 ,  C22C38/42 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54

    摘要： A spring steel contains 0.15-0.40% carbon, 1-3.5% silicon, 0.20-2.0% manganese, 0.05-1.20% chromium, at most 0.030% phosphorus, at most 0.02% sulfur, and at least one of the following: 0.005-0.10% titanium, 0.005-0.05% niobium, and at most 0.25% vanadium. The remainder of said spring steel includes iron and unavoidable impurities. The carbon equivalent (Ceq1) of the provided spring steel, as calculated by formula (1), is at most 0.55. (1) Ceq1=[C]+0.108×[Si]−0.067×[Mn]+0.024×[Cr]−0.05×[Ni]+0.074×[V]. In the formula (1), each symbol in brackets represents the content (mass %) of the corresponding element.

    摘要翻译： 弹簧钢含有0.15-0.40％的碳，1-3.5％的硅，0.20-2.0％的锰，0.05-1.20％的铬，至多0.030％的磷，至多0.02％的硫，以及至少一种以下：0.005- 0.10％的钛，0.005-0.05％的铌和至多0.25％的钒。 所述弹簧钢的剩余部分包括铁和不可避免的杂质。 由式（1）计算的所提供的弹簧钢的碳当量（Ceq1）至多为0.55。 （1）Ceq1 = [C] + 0.108×[Si] -0.067×[Mn] + 0.024×[Cr] -0.05×[Ni] + 0.074×[V]。 在公式（1）中，括号中的每个符号表示相应元素的含量（质量％）。

    STEEL WIRE ROD
    8.
    发明申请
    STEEL WIRE ROD 有权
    钢丝绳

    公开(公告)号：US20090269578A1

    公开(公告)日：2009-10-29

    申请号：US12409679

    申请日：2009-03-24

    申请人： Mikako TAKEDA ,  Shohei NAKAKUBO ,  Takashi ONISHI ,  Masumi NISHIMURA ,  Hidenori SAKAI ,  Tomotada MARUO

    发明人： Mikako TAKEDA ,  Shohei NAKAKUBO ,  Takashi ONISHI ,  Masumi NISHIMURA ,  Hidenori SAKAI ,  Tomotada MARUO

    IPC分类号： B32B15/02 ,  B32B15/04

    CPC分类号： C22C38/04 ,  C21D1/74 ,  C21D8/065 ,  C21D9/00 ,  C21D9/52 ,  C21D9/525 ,  C22C38/00 ,  C22C38/02 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/265

    摘要： An FeO layer including fine crystal grains having random orientation is formed as inner layer scale on the surface of the steel wire rod containing C: 0.05-1.2 mass % (hereinafter referred to as “%”), Si: 0.01-0.50%, Mn: 0.1-1.5%, P: 0.02% or below, S: 0.02% or below, N: 0.005% or below, an Fe2SiO4 layer with the thickness: 0.01-1.0 μm is formed in the boundary face between the FeO layer of the inner layer scale and steel, and the thickness of the inner layer scale is 1-40% of the total scale thickness. In another aspect, the maximum grain size of the crystal grain of the inner layer scale is 5.0 μm or below and the average grain size is 2.0 μm or below.

    摘要翻译： 在含有C：0.05〜1.2质量％（以下称为“％”），Si：0.01-0.50％，Mn：0.01-0.50％的钢丝网的表面上形成包含具有随机取向的细晶粒的FeO层作为内层标尺 ：0.1-1.5％，P：0.02％以下，S：0.02％以下，N：0.005％以下，在FeO层的FeO层之间的边界面上形成厚度为0.01〜1.0μm的Fe 2 SiO 4层 内层刻度和钢，内层刻度的厚度为总刻度厚度的1-40％。 另一方面，内层鳞片的晶粒的最大粒径为5.0μm以下，平均粒径为2.0μm以下。

    HIGH CARBON STEEL WIRE MATERIAL HAVING EXCELLENT WIRE DRAWABILITY AND MANUFACTURING PROCESS THEREOF
    9.
    发明申请
    HIGH CARBON STEEL WIRE MATERIAL HAVING EXCELLENT WIRE DRAWABILITY AND MANUFACTURING PROCESS THEREOF 有权
    高碳钢丝材料具有优异的线材可拉伸性和制造工艺

    公开(公告)号：US20090223610A1

    公开(公告)日：2009-09-10

    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 ,  C21D6/00 ,  C21D8/00

    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
    10.
    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。