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    Process for manufacturing a high carbon steel wire material having excellent wire drawability
    3.
    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 CARBON STEEL WIRE MATERIAL HAVING EXCELLENT WIRE DRAWABILITY AND MANUFACTURING PROCESS THEREOF
    5.
    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 。

    High Carbon steel wire material having excellent wire drawability and manufacturing process thereof
    6.
    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）。

    High-strength steel wire excelling in resistance to strain aging embrittlement and longitudinal cracking, and method for production thereof
    7.
    发明授权
    High-strength steel wire excelling in resistance to strain aging embrittlement and longitudinal cracking, and method for production thereof 有权
    抗老化脆化和纵向开裂性优异的高强度钢丝及其制造方法

    公开(公告)号：US06800147B2

    公开(公告)日：2004-10-05

    申请号：US10226137

    申请日：2002-08-23

    申请人： Mamoru Nagao ,  Hiroshi Yaguchi ,  Kenji Ochiai ,  Nobuhiko Ibaraki ,  Takaaki Minamida ,  Noriaki Hiraga

    发明人： Mamoru Nagao ,  Hiroshi Yaguchi ,  Kenji Ochiai ,  Nobuhiko Ibaraki ,  Takaaki Minamida ,  Noriaki Hiraga

    IPC分类号： C22C3802

    CPC分类号： C22C38/04 ,  B21C1/00 ,  B21C37/045 ,  C21D8/06 ,  C22C38/02 ,  D07B1/066 ,  D07B2205/3057 ,  Y10T428/12431 ,  D07B2801/10

    摘要： Disclosed herein is a high-strength high-carbon steel wire which, owing to its high strength as well as good ductility, is excellent in resistance to strain aging embrittlement and longitudinal cracking. The steel wire is characterized by having a chemical composition (in mass %) including C: 0.75-1.20%, Si: 0.1-1.5%, Mn: 0.3-1.2%, P: no more than 0.02%, S: no more than 0.02%, Al: no more than 0.005%, and N: no more than 0.008%, with the remainder being Fe and inevitable impurities. The steel wire is further characterized by having worked pearlite structure containing lamellar cementite in amorphous form, a diameter (D) ranging from 0.15 to 0.4 mm, a metal lubricating film as the surface layer whose main phase is composed of at least one of Cu, Ni, and Zn or an alloy thereof, and tensile strength no lower than (3500×D−0.145) MPa and no higher than (3500×D−0.145+87×[C]−5) MPa, where [C] denotes C content in %.

    摘要翻译： 本发明公开了一种高强度高碳钢丝，由于其强度高，延展性好，耐应变老化脆化和纵向裂纹性优异。钢丝的特征在于其化学成分（质量） ％），包括C：0.75-1.20％，Si：0.1-1.5％，Mn：0.3-1.2％，P：不大于0.02％，S：不大于0.02％，Al：不大于0.005％，N ：不超过0.008％，其余为Fe和不可避免的杂质。 该钢丝的特征还在于具有包含无定形的层状渗碳体，直径（D）为0.15〜0.4mm的金刚石润滑膜，其主相由Cu， Ni和Zn或其合金，拉伸强度不低于（3500×D <-0.145>）MPa，不高于（3500×D <-0.145> + 87×[C]≤5）MPa，其中[C]表示 C含量为％。

    High-carbon steel wire superior in resistance to longitudinal cracking, steel product for the same, and process for production of the same
    8.
    发明授权
    High-carbon steel wire superior in resistance to longitudinal cracking, steel product for the same, and process for production of the same 有权
    耐高温钢丝抗纵向开裂，钢制品相同，及其生产工艺相同

    公开(公告)号：US06322641B1

    公开(公告)日：2001-11-27

    申请号：US09520657

    申请日：2000-03-07

    申请人： Koichi Makii ,  Nobuhiko Ibaraki ,  Kenji Ochiai ,  Atsushi Inada ,  Sakae Wada ,  Takaaki Minamida ,  Mamoru Nagao

    发明人： Koichi Makii ,  Nobuhiko Ibaraki ,  Kenji Ochiai ,  Atsushi Inada ,  Sakae Wada ,  Takaaki Minamida ,  Mamoru Nagao

    IPC分类号： C22C3802

    CPC分类号： D02G3/48 ,  C21D8/06 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/28

    摘要： Disclosed herein are a high-carbon steel wire having high strength and superior in resistance to longitudinal cracking, a steel for said high-carbons steel wire, and a process for producing said steel. The high-carbon steel wire is characterized in that the essential components are C (0.65-1.2 wt %), Si (0.1-2.0 wt %), Mn (0.2-2.0 wt %), and Fe, the main phase is pearlite, and the ferrite area ratio is less than 0.40 % in the surface layer up to a depth of 50 &mgr;m from the surface. The high-carbon steel may further contain B (0.0003-0.0050 wt %), Ti (less than 0.030 wt %), and N (less than 0.0050 wt %), with the amount of B, Ti, and N satisfying the following equation 0.03≦B/(Ti/3.43−N)≦5.0 The resulting steel wire produced in the usual way contains ferrite in an amount less than 0.40 wt % in its surface layer. This low ferrite content is responsible for good resistance to longitudinal cracking because ferrite causes longitudinal cracking to start from it.

    摘要翻译： 本发明公开了一种高强度，耐纵向开裂性优异的高碳钢丝，所述高碳钢丝的钢及其制造方法。 高碳钢丝的特征在于，主要组分为C（0.65-1.2重量％），Si（0.1-2.0重量％），Mn（0.2-2.0重量％）和Fe，主相为珠光体， 并且表面层的铁素体面积率小于0.40μm，距表面50μm的深度。 高碳钢可以进一步含有B（0.0003〜0.0050重​​量％），Ti（小于0.030重量％）和N（小于0.0050重​​量％），其中B，Ti和N的量满足以下等式 以通常方式制造的所得钢丝在其表面层中含有小于0.40重量％的铁素体。 这种低铁素体含量是由于铁素体引起纵向开裂从而起到良好的纵向开裂性能。

    Hot milled wire rod excelling in wire drawability and enabling avoiding heat treatment before wire drawing
    9.
    发明授权
    Hot milled wire rod excelling in wire drawability and enabling avoiding heat treatment before wire drawing 有权
    热拔丝线材具有优良的拉丝性能，能够避免拉丝前的热处理

    公开(公告)号：US07850793B2

    公开(公告)日：2010-12-14

    申请号：US10528263

    申请日：2003-09-24

    申请人： Mamoru Nagao ,  Takeshi Kuroda ,  Takaaki Minamida

    发明人： Mamoru Nagao ,  Takeshi Kuroda ,  Takaaki Minamida

    IPC分类号： C22C38/00

    CPC分类号： C22C38/02 ,  C21D8/06 ,  C21D9/5732 ,  C21D2211/009 ,  C22C38/04 ,  C22C38/40

    摘要： A hot-rolled wire rod:the wire rod being a hot-rolled wire rod 5.0 mm or more in diameter, containing in mass C: 0.6 to 1.0%, Si: 0.1 to 1.5%, Mn: 0.3 to 1.0%, P: 0.02% or less, and S: 0.02% or less; not less than 90% of the wire rod in area percentage being composed of a pearlite structure; and the mechanical properties of the wire rod 4 m in length satisfying the following expressions (1) to (4), (1) TS*−30≦Average value of tensile strength (TSAV in MPa)≦TS*+30, where, TS*=400×{[C]+([Mn]+[Si])/5}+670 and the elements in square brackets [ ] in the equality mean the contents of relevant elements in percentage, (2) Standard deviation of tensile strength (TSσ)≦30 MPa, (3) Average value of reduction of area (RAAV)>35%, (4) Standard deviation of reduction of area (RAσ)≦4%. A hot-rolled wire rod according to the present invention is incomparably excellent in wire drawability and brakes less frequently than a conventional wire rod even when it is processed as hot-rolled with heat treatment such as patenting treatment omitted.

    摘要翻译： 热轧线材：线材为直径5.0mm以上的热轧线材，质量C：0.6〜1.0％，Si：0.1〜1.5％，Mn：0.3〜1.0％，P： 0.02％以下，S：0.02％以下。 不少于90％的线材面积百分比由珠光体组织构成; （1）〜（4），（1）TS * -30＆nlE的拉伸强度的平均值（TSAV，MPa）＆amp; NlE; TS * + 30，其中， ，TS * = 400×{[C] +（[Mn] + [Si]）/ 5} +670，方括号[]中的元素等于相关元素的百分比含量，（2）标准偏差 的拉伸强度（TS＆sgr。）＆nlE; 30MPa，（3）面积减少平均值（RAAV）> 35％，（4）面积减少的标准偏差（RA＆sgr）＆nlE; 4％。 根据本发明的热轧线材即使在热处理如热处理如专利处理被省略时，也可以比现有的线材更频繁地拉丝性和制动性优异。