利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

17 条记录 (耗时 0.02 秒)

    Method for producing steel strip or steel sheet containing carbide and nitride forming elements
    2.
    发明授权
    Method for producing steel strip or steel sheet containing carbide and nitride forming elements 失效
    含有碳化物和氮化物形成元素的钢带或钢板的制造方法

    公开(公告)号：US4125416A

    公开(公告)日：1978-11-14

    申请号：US829461

    申请日：1977-08-31

    申请人： Hiroshi Katoh ,  Yasumitsu Onoe ,  Koichi Kawamura ,  Osamu Akisue

    发明人： Hiroshi Katoh ,  Yasumitsu Onoe ,  Koichi Kawamura ,  Osamu Akisue

    IPC分类号： C22C38/00 ,  C21D7/13 ,  C21D8/02 ,  C21D8/04 ,  C21D9/48 ,  C21D1/02

    CPC分类号： C21D8/041 ,  C21D7/13 ,  C21D8/0426

    摘要： A method for producing a low carbon deep drawing quality steel or high strength steel in the form of a strip or sheet. At least one of carbide or nitride forming elements is added to the low carbon steel to provide therein 0.015 to 0.10% Sol Al, 0.01 to 0.10% Nb, 0.01 to 0.10% Ti and 0.01 to 0.15% V. The steel is cast or bloomed to form a slab which is held above the Ar.sub.3 point for keeping the carbide and nitride forming elements in a dissolved state. Then, without allowing the temperature to fall below the Ar.sub.3 point, hot rolling and hot finishing rolling are directly carried out at a temperature above the Ar.sub.3 point. Thereafter, if necessary and desirable, the thus-rolled slab or sheet is subjected to cold rolling and annealing.

    摘要翻译： 一种用于生产带状或片状形式的低碳深拉深质量钢或高强度钢的方法。 将碳化物或氮化物形成元素中的至少一种添加到低碳钢中以提供0.015至0.10％的Sol Al，0.01至0.10％的Nb，0.01至0.10％的Ti和0.01至0.15％的V。钢被铸造或开裂 以形成保持在Ar3点以上以保持碳化物和氮化物形成元件处于溶解状态的板坯。 然后，不使温度降低到Ar3点以下，在Ar3点以上的温度下直接进行热轧和热精轧。 此后，如果需要和期望，将如此轧制的板坯或片材进行冷轧和退火。

    High-strength cold-rolled steel sheet having high r value and process for manufacturing the same
    3.
    发明授权
    High-strength cold-rolled steel sheet having high r value and process for manufacturing the same 失效
    具有高r值的高强度冷轧钢板及其制造方法

    公开(公告)号：US4961793A

    公开(公告)日：1990-10-09

    申请号：US320268

    申请日：1988-11-18

    申请人： Koji Kishida ,  Osamu Akisue

    发明人： Koji Kishida ,  Osamu Akisue

    IPC分类号： C21D9/52 ,  C21D8/04 ,  C21D9/46 ,  C21D9/56 ,  C22C38/00 ,  C22C38/16

    CPC分类号： C22C38/16

    摘要： A heat-treatment-hardenable cold-rolled steel sheet having a high r value, comprising 0.010% or less of carbon, 0.05 to 0.5% of manganese, 1.0% or less of silicon, 0.001 to 0.030% of sulfur, 0.03% or less of phosphorus, 0.0050% or less of nitrogen, 0.005 to 0.10% of sol. aluminum, and 0.8 to 2.2% of copper with the balance being iron and unavoidable elements and, optionally incorporated therein, either or both of titanium and niobium and further nickel and optionally boron. The steel sheet can be manufactured by subjecting a cold-rolled steel sheet having this composition to recrystallization annealing at a temperature of 750.degree. C. or above and then heat-treating the steel sheet at a temperature ranging from 450.degree. to 700.degree. C. for 1 minute or longer. Alternatively, after the recrystallization annealing, the sheet can be cooled to a temperature of 450.degree. C. or below within 1 minute, followed by work deformation and heat-treating the work-deformed product at a temperature of 450.degree. C. or above to increase the strength of the steel sheet.

    High-strength hot-rolled steel sheet having remarkably excellent cold workability and process for manufacturing the same
    5.
    发明授权
    High-strength hot-rolled steel sheet having remarkably excellent cold workability and process for manufacturing the same 失效
    具有优异的冷加工性的高强度热轧钢板及其制造方法

    公开(公告)号：US4925500A

    公开(公告)日：1990-05-15

    申请号：US320265

    申请日：1988-11-18

    申请人： Koji Kishida ,  Osamu Akisue

    发明人： Koji Kishida ,  Osamu Akisue

    IPC分类号： B21B3/00 ,  C21D8/02 ,  C22C38/16

    CPC分类号： C22C38/16 ,  C21D8/0226 ,  C21D2211/005

    摘要： A heat-treatment hardenable hot-rolled steel sheet having remarkably excellent cold workability comprising 0.0005 to 0.015% of carbon, 0.05 to 0.5% of manganese, 0.001 to 0.030% of sulfur, 1.0 to 2.2% of copper, 0.100% or less of phosphorus, 1.0% or less of silicon, 0.0050% or less of nitrogen, and 0.002 to 0.10% of sol. aluminum with the balance being iron and unavoidable elements and substantially comprising a ferritic single phase structure free from occurrence of pearlite. The steel may also contain 0.01 to 0.2% titanium, 0.005 to 0.2% niobium, 0.15 to 0.45% nickel and/or 0.0001 to 0.0030% boron. The steel sheet is produced by hot-rolling the steel at a temperature above the Ar.sub.3 point and coiling the hot-rolled steel strip at a temperature of, preferably, 350.degree. C. or below. The resultant steel sheet is relatively easy to work, and its strength can be dramatically increased by heat treatment for a short period of time after working.

    Method for producing a cold-rolled steel sheet having excellent formability
    6.
    发明授权
    Method for producing a cold-rolled steel sheet having excellent formability 失效
    制造性优异的冷轧钢板的制造方法

    公开(公告)号：US4478649A

    公开(公告)日：1984-10-23

    申请号：US464067

    申请日：1983-02-04

    申请人： Osamu Akisue ,  Seiryo Hatae ,  Hiroaki Toki ,  Kichi Nakazawa ,  Atsuhiro Wakako

    发明人： Osamu Akisue ,  Seiryo Hatae ,  Hiroaki Toki ,  Kichi Nakazawa ,  Atsuhiro Wakako

    IPC分类号： B21B3/00 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C21D9/48 ,  C21D9/68 ,  C22C38/00 ,  C22C38/06

    CPC分类号： C21D8/0426 ,  C21D8/02

    摘要： In a method for producing a cold-rolled steel sheet by continuously casting, hot-rolling, cold-rolling, and continuously annealing Al-killed steel, it is known to coil a hot-rolled strip at a coiling temperature of 630.degree. C. to 710.degree. C. so as to attain satisfactory precipitation of AlN in the hot-rolling step. When the direct-rolling of a continuously cast strand (DR method) is employed to produce a cold-rolled strip, it is impossible to attain satisfactory precipitation of AlN even by carrying out the known coiling method. The present invention is characterized in that an extremely high coiling temperature of at least 780.degree. C. is used to essentially prevent aging due to the precipitation of AlN, and, further, the carbon content of a continuously cast slab is 0.005% at the highest so as to essentially prevent the occurrence of orange peel. Heat conservation due to use of the DR method and excellent properties of the cold-rolled steel strip are simultaneously attained.

    摘要翻译： 在通过连续铸造，热轧，冷轧和连续退火Al镇静钢的冷轧钢板的制造方法中，已知在630℃的卷取温度下卷取热轧带材 到710℃，以便在热轧步骤中获得令人满意的AlN的沉淀。 当使用连续铸造线材（DR法）的直接轧制来制造冷轧带材时，即使采用已知的卷取方法也不可能获得令人满意的AlN的析出。 本发明的特征在于，使用极高的至少780℃的卷取温度来基本上防止由于AlN的沉淀引起的老化，此外，连续铸造的板坯的碳含量最高为0.005％ 以便基本上防止橙皮的发生。 同时获得使用DR法的热保存和冷轧钢带的优异性能。

    Ferrite-based thin steel sheet excellent in shape freezing feature and manufacturing method thereof
    7.
    发明授权
    Ferrite-based thin steel sheet excellent in shape freezing feature and manufacturing method thereof 有权
    形状冷冻特性优异的铁素体系薄钢板及其制造方法

    公开(公告)号：US06375765B1

    公开(公告)日：2002-04-23

    申请号：US09509278

    申请日：2000-03-27

    申请人： Manabu Takahashi ,  Osamu Akisue ,  Koji Kishida ,  Matsuo Usuda ,  Tohru Yoshida

    发明人： Manabu Takahashi ,  Osamu Akisue ,  Koji Kishida ,  Matsuo Usuda ,  Tohru Yoshida

    IPC分类号： C22C3842

    CPC分类号： C22C38/004 ,  C21D8/0226 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06

    摘要： A thin ferritic steel sheet having an excellent shape fixability capable of being used for bending is provided, comprising: at least 0.027 to less than 0.05 mass % of C, 0.01 to 1.0 mass % of Si, 0.01 to 2.0 mass % of Mn, not more than 0.15 mass % of P, not more than 0.03 mass % of S, 0.01 to 0.1 mass % of Al, not more than 0.01 mass % of N, not more than 0.007 mass % of O, the balance being Fe and inevitable impurities, wherein a ratio of presence of {100} planes parallel with a face of the steel sheet to {111} planes is not less than 1.0, and TS×El, which represents a product of maximum tensile strength (TS) multiplied by rupture elongation (El) of the steel sheet, is at least 13,860 MPA %.

    摘要翻译： 提供一种具有优异的能够弯曲的定形性的薄铁素体钢板，其特征在于，包括以下的至少0.027〜小于0.05质量％的C，0.01〜1.0质量％的Si，0.01〜2.0质量％的Mn， 大于0.15质量％的P，不大于0.03质量％的S，0.01至0.1质量％的Al，不大于0.01质量％的N，不大于0.007质量％的O，余量为Fe和不可避免的杂质 其中，与钢板表面平行的{100}面与{111}面的比例不小于1.0，表示最大拉伸强度（TS）乘以断裂伸长率（E1）的乘积的TSxE1 ）至少为13,860 MPA％。