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    Process for manufacturing high tensile steel wire
    1.
    发明授权
    Process for manufacturing high tensile steel wire 失效
    制造高强度钢丝的工艺

    公开(公告)号：US4604146A

    公开(公告)日：1986-08-05

    申请号：US563322

    申请日：1983-11-07

    申请人： Akira Aida ,  Tetsu Ohno ,  Takashi Fukuda ,  Kenji Aihara ,  Takuo Mizoguchi ,  Syozi Nishimura ,  Katsuyoshi Kajiyama

    发明人： Akira Aida ,  Tetsu Ohno ,  Takashi Fukuda ,  Kenji Aihara ,  Takuo Mizoguchi ,  Syozi Nishimura ,  Katsuyoshi Kajiyama

    IPC分类号： C21D9/52 ,  C21D8/06 ,  C22C38/18

    CPC分类号： C21D8/06 ,  C22C38/18 ,  C21D2211/008

    摘要： A process for manufacturing a high tensile steel wire, characterized by comprising the steps of pre-cooling a hot-rolled steel rod to a temperature between 750.degree.-900.degree. C. by means of a cooling apparatus provided between a group of intermediate rolling mills and a group of finishing rolling mills in a hot rolling line for steel rod, finishing rolling the thus pre-cooled steel rod, quenching the hot rolled steel rod to a temperature of 700.degree. C. or lower to provide a supercooled austenite phase, then finishing-cooling the thus quenched rod to provide martensite, and drawing the resulting steel rod with roller dies without descaling is disclosed.

    摘要翻译： 一种制造高强度钢丝的方法，其特征在于包括以下步骤：通过设置在一组中间轧机之间的冷却装置将热轧钢棒预冷至750-900℃的温度 和一组用于钢棒的热轧生产线的精轧机，对这样预冷的钢棒进行精轧，将热轧钢棒淬火至700℃以下，提供过冷奥氏体相， 对如此淬火的棒进行精加工冷却以提供马氏体，并且公开了将所得钢棒用辊模而不进行除锈。

    Nonmagnetic alloy steel having improved machinability
    3.
    发明授权
    Nonmagnetic alloy steel having improved machinability 失效
    具有改善机械加工性的非磁性合金钢

    公开(公告)号：US4240827A

    公开(公告)日：1980-12-23

    申请号：US968038

    申请日：1978-12-11

    申请人： Kenji Aihara ,  Masashi Takahashi

    发明人： Kenji Aihara ,  Masashi Takahashi

    IPC分类号： C22C38/00 ,  C22C38/04 ,  H01F1/00 ,  C22C39/30

    CPC分类号： C22C38/04

    摘要： A nonmagnetic alloy steel containing by weight 5 to 30% Mn and 0.005 to 0.5% N (nitrogen), satisfying the condition that 100/9(C%+N%)+2(Mn%+Cu%) is more than 25% and containing at least one element to improve the machinability of the steel. Since the steel contains no Ni, the steel is inexpensive and can be used for bars for reinforcing concrete and bolts for civil engineering works and buildings.

    摘要翻译： 满足100/9（C％+ N％）+2（Mn％+ Cu％）的条件下，重量为5〜30％Mn和0.005〜0.5％N（氮）的非磁性合金钢的含量超过25％ 并且含有至少一种元素以提高钢的机械加工性。 由于钢不含镍，所以钢材便宜，可用于钢筋混凝土和螺栓用于土木工程和建筑物。

    Carburizing steel and steel products manufactured making use of the carburizing steel
    7.
    发明授权
    Carburizing steel and steel products manufactured making use of the carburizing steel 有权
    使用渗碳钢制造渗碳钢铁制品

    公开(公告)号：US6126897A

    公开(公告)日：2000-10-03

    申请号：US137309

    申请日：1998-08-21

    申请人： Kenji Aihara ,  Yasuhide Fujioka ,  Kazuhiko Yoshida ,  Tatsuhiro Goto ,  Akira Wakita

    发明人： Kenji Aihara ,  Yasuhide Fujioka ,  Kazuhiko Yoshida ,  Tatsuhiro Goto ,  Akira Wakita

    IPC分类号： C22C38/22 ,  C22C38/32 ,  C23C8/02 ,  C23C8/22 ,  C21D8/10 ,  C22C38/54

    CPC分类号： C22C38/22 ,  C22C38/32 ,  C23C8/02 ,  C23C8/22

    摘要： A carburizing steel having the following chemical composition:C: 0.1 to 0.25%,Si: 0.2 to 0.4%,Mn: 0.3 to 0.9%,P: 0.02% or less,S: 0.001 to 0.15%,Cr: 0.5 to 0.9%,Mo: 0.15 to 1%,Al: 0.01 to 0.1%,B: 0.0005 to 0.009%,N: less than 0.006%, andthe balance of Fe and incidental impurities, wherein % is on a weight basis. Also disclosed are a method for the manufacture of the carburizing steel, parts of constant velocity universal joints for drive shafts made of the carburizing steel, as well as a method for the manufacture of such parts. The carburizing steel may further contain Ni: 0.3-4.0%, and one or more elements selected from the group consisting of Ti, Nb, V and Zr: 0.01-0.3% for each. The parts of constant velocity universal joints for drive shafts are manufactured using the carburizing steel of the present invention as a material. When they are carburized and quenched, they exhibit a surface hardness (Hv) of 650-800, core hardness (Hv) of 250-450, and carburized case depth of 0.2-1.2 mm.

    摘要翻译： 具有以下化学组成的渗碳钢：C：0.1〜0.25％，Si：0.2〜0.4％，Mn：0.3〜0.9％，P：0.02％以下，S：0.001〜0.15％，Cr：0.5〜0.9％ ，Mo：0.15〜1％，Al：0.01〜0.1％，B：0.0005〜0.009％，N：小于0.006％，余量为Fe和附带杂质，％为重量。 还公开了一种用于制造渗碳钢的方法，由渗碳钢制成的驱动轴的等速万向接头的部件以及制造这种部件的方法。 渗碳钢可以进一步含有Ni：0.3-4.0％，以及从Ti，Nb，V和Zr组成的组中选择的一种或多种元素：0.01-0.3％。 使用本发明的渗碳钢作为材料制造用于驱动轴的等速万向接头的部件。 当它们被渗碳淬火时，它们的表面硬度（Hv）为650-800，芯硬度（Hv）为250-450，渗碳壳深度为0.2-1.2mm。

    Carburizing steel and steel products manufactured making use of the carburizing steel
    8.
    发明授权
    Carburizing steel and steel products manufactured making use of the carburizing steel 失效
    使用渗碳钢制造渗碳钢铁制品

    公开(公告)号：US5853502A

    公开(公告)日：1998-12-29

    申请号：US694744

    申请日：1996-08-09

    申请人： Kenji Aihara ,  Yasuhide Fujioka ,  Kazuhiko Yoshida ,  Tatsuhiro Goto ,  Akira Wakita

    发明人： Kenji Aihara ,  Yasuhide Fujioka ,  Kazuhiko Yoshida ,  Tatsuhiro Goto ,  Akira Wakita

    IPC分类号： C22C38/22 ,  C22C38/32 ,  C23C8/02 ,  C23C8/22

    CPC分类号： C22C38/22 ,  C22C38/32 ,  C23C8/02 ,  C23C8/22

    摘要： A carburizing steel having the following chemical composition: C: 0.1 to 0.25%, Si: 0.2 to 0.4%, Mn: 0.3 to 0.9%, P: 0.02% or less, S: 0.001 to 0.15%, Cr: 0.5 to 0.9%, Mo: 0.15 to 1%, Al: 0.01 to 0.1%, B: 0.0005 to 0.009%, N: less than 0.006%, and the balance of Fe and incidental impurities, wherein % is on a weight basis. Also disclosed are a method for the manufacture of the carburizing steel, parts of constant velocity universal joints for drive shafts made of the carburizing steel, as well as a method for the manufacture of such parts. The carburizing steel may further contain Ni: 0.3-4.0%, and one or more elements selected from the group consisting of Ti, Nb, V and Zr: 0.01-0.3% for each.

    摘要翻译： 具有以下化学组成的渗碳钢：C：0.1〜0.25％，Si：0.2〜0.4％，Mn：0.3〜0.9％，P：0.02％以下，S：0.001〜0.15％，Cr：0.5〜0.9％ ，Mo：0.15〜1％，Al：0.01〜0.1％，B：0.0005〜0.009％，N：小于0.006％，余量为Fe和附带杂质，％为重量。 还公开了一种用于制造渗碳钢的方法，由渗碳钢制成的驱动轴的等速万向接头的部件以及制造这种部件的方法。 渗碳钢可以进一步含有Ni：0.3-4.0％，以及从Ti，Nb，V和Zr组成的组中选择的一种或多种元素：0.01-0.3％。

    Process for production of steel bar or steel wire having an improved spheroidal structure of cementite
    9.
    发明授权
    Process for production of steel bar or steel wire having an improved spheroidal structure of cementite 失效
    具有改进的渗碳体球形结构的钢筋或钢丝的生产方法

    公开(公告)号：US4604145A

    公开(公告)日：1986-08-05

    申请号：US632234

    申请日：1984-07-19

    申请人： Susumu Kanabara ,  Kenji Aihara

    发明人： Susumu Kanabara ,  Kenji Aihara

    IPC分类号： C21D8/06 ,  C21D9/52

    CPC分类号： C21D8/06

    摘要： Herein disclosed is a process for producing a steel bar or steel wire having an improved structure of spheroidal cementite. The process is characterized in that a finish rolling is conducted within a temperature range between Ar.sub.1 and Ar.sub.3 or Arcm with a reduction ratio of at least 20%.The cooling rate of the steel before the finish rolling should be controlled in the following manner:When the hardenability of the steel is not higher than that of 0.15% C plain carbon steel, it is preferable to cool the steel at a cooling rate higher than 250.degree. C./sec.When the hardenability of the steel is between those of 0.15% to 0.4% C plain carbon steel, it is preferable to cool the steel at a cooling rate higher than 10.degree. C./sec.When the hardenability of the steel is not lower than that of 0.4% C plain carbon steel, it is preferable to cool the steel at a cooling rate higher than 2.degree. C./sec.The annealing may be conducted on the same production line as the hot working of the steel for a shorter time duration by an isothermal treatment, slow cooling treatment or repeating treatment. The annealing may be conducted also by a usual annealing method.

    摘要翻译： 本发明公开了一种具有改进的球状渗碳体结构的钢棒或钢丝的制造方法。 该方法的特征在于，在Ar1和Ar3或Arcm之间的温度范围内进行精轧，减压比至少为20％。 精轧前钢的冷却速度应按照以下方式进行控制：当钢的淬透性不高于0.15％C普通碳钢时，优选以高于 250℃/秒。 当钢的淬透性在0.15％〜0.4％C普通碳钢之间时，优选以高于10℃/秒的冷却速度来冷却钢。 当钢的淬透性不低于0.4％C普通碳钢时，优选以高于2℃/秒的冷却速度冷却钢。 退火可以通过等温处理，缓慢冷却处理或重复处理在与钢的热加工相同的生产线上进行较短时间。 还可以通过通常的退火方法进行退火。

    Apparatus for dry type continuous wire drawing
    10.
    发明授权
    Apparatus for dry type continuous wire drawing 失效
    干式连续拉丝设备

    公开(公告)号：US4545227A

    公开(公告)日：1985-10-08

    申请号：US505844

    申请日：1983-06-20

    申请人： Chuzoh Sudoh ,  Hyoji Hagita ,  Motoo Asakawa ,  Hiroshi Nagai ,  Kenji Aihara

    发明人： Chuzoh Sudoh ,  Hyoji Hagita ,  Motoo Asakawa ,  Hiroshi Nagai ,  Kenji Aihara

    IPC分类号： B21C1/00 ,  B21C1/02 ,  B21C9/00 ,  B21C51/00 ,  B21C43/04

    CPC分类号： B21C51/00 ,  B21C1/02 ,  B21C9/00

    摘要： Herein disclosed are dry type continuous wire drawing process and machine which can enhance the productivity by conducting in-line a wire drawing operation including the steps of flaw detection and wire repair. The wire to be drawn is mechanically descaled and is then coated with a lubricant. The wire thus coated is drawn through a drawing die. At the coating step, the wire is first coated with lime powder and then with metallic soap. Thus, the wire is drawn under dry and continuous conditions. After the drawing operation, a flaw in surface of the wire is detected. The surface flaw is located from the running speed or distance of the wire and the detecting instant. The surface flaw located is removed. The resultant wire is wound up. The surface flaw which cannot be removed is marked. An internal defect in the drawn wire is also detected with ultrasonic waves. The internally detected portion is also marked. All of the steps thus far recited and others are conducted in-line.

    摘要翻译： 这里公开的是干式连续拉丝工艺和机器，其可以通过在线进行拉丝操作来提高生产率，包括探伤和线材修复的步骤。 待拉制的线材是机械除锈的，然后用润滑剂涂覆。 这样涂覆的丝线通过拉丝模头拉出。 在涂层步骤中，首先用石灰粉末涂覆金属丝，然后用金属皂涂覆。 因此，在干燥和连续的条件下拉丝。 在绘图操作之后，检测到导线表面的缺陷。 表面缺陷位于线的运行速度或距离以及检测时刻。 去除表面缺陷。 所得到的线被卷起。 标有不能清除的表面缺陷。 拉丝的内部缺陷也用超声波检测。 内部检测到的部分也被标记。 到目前为止所有的步骤和其他步骤是在线进行的。