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.

公开(公告)号：US4960158A

公开(公告)日：1990-10-02

申请号：US319946

申请日：1989-03-07

申请人： Teruaki Yamada ,  Osamu Akisue ,  Toshiyasu Ukena ,  Masahiko Oda ,  Teruki Hayashida

发明人： Teruaki Yamada ,  Osamu Akisue ,  Toshiyasu Ukena ,  Masahiko Oda ,  Teruki Hayashida

IPC分类号： C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

CPC分类号： C23C2/28 ,  C23C2/02 ,  C23C2/40

摘要： A zinc-plated steel sheet with an ageing resistance is produced from an Al-killed steel by hot dip type, continuous zinc plating including recrystallization and annealing, where after recrystallization and grain growth, the steel sheet is quenched at a cooling rate of 30.degree..about.250.degree. C/sec from 720.degree..about.600.degree. C. to 310.degree..about.200.degree. C.; after keeping the steel sheet at the same temperature for 0 to 15 seconds, the steel sheet is reheated to a molten zinc bath temperature; then the steel sheet is dipped into the molten zinc bath for zinc-plating; and then the steel sheet is cooled at a cooling rate of 250 to 5.degree. C./sec from that temperature to 350.degree. C.; and then the steel sheet is cooled at a specific average cooling rate in a temperature region of 350.degree. C. to 300.degree. C. and at a specific average cooling rate in a temperature region of from 300.degree. C. to 285.degree..about.220.degree. C.

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.

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。

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％。

公开(公告)号：US4931107A

公开(公告)日：1990-06-05

申请号：US314925

申请日：1989-02-24

申请人： Teruaki Yamada ,  Toshiyasu Ukena ,  Osamu Akisue ,  Kenji Kawai ,  Yuuji Sano ,  Teruki Hayashida

发明人： Teruaki Yamada ,  Toshiyasu Ukena ,  Osamu Akisue ,  Kenji Kawai ,  Yuuji Sano ,  Teruki Hayashida

IPC分类号： C21D9/48 ,  C21D1/19 ,  C21D8/02 ,  C21D9/52 ,  C21D9/56 ,  C22C38/00 ,  C22C38/06

CPC分类号： C21D9/52 ,  C21D8/0273 ,  C22C38/00 ,  C21D1/19 ,  C21D8/0236

摘要： A cold rolled steel sheet having a good ageing resistance is produced by subjecting a cold rolled steel sheet to continuous annealing including recrystallization, grain growth, quenching, supercooling, reheating and overageing according to inclinatory cooling, where after the recrystallization and the grain growth, the steel sheet is quenched at a cooling rate of 50 to 250.degree. C./sec from 720-600.degree. C. to 200-310.degree. C.; after retaining the steel sheet at the same temperature for 0 to 15 seconds, the steel sheet is reheated by at least 40.degree. C. up to 320-400.degree. C.; then the steel sheet is retained at the same temperature or cooled at a rate of not more than 0.7.degree. C./sec including the time for retaining the steel sheet at the same temperature; and then the steel sheet is cooled at an average cooling rate of not more than 10.degree. C./sec in a temperature zone of higher than 350.degree. C., at a specific average cooling rate in a temperature zone of 350.degree. C. to 300.degree. C. and at a specific average cooling rate down to 285-220.degree. C. in a temperature zone of lower than 300.degree. C.

公开(公告)号：US4551182A

公开(公告)日：1985-11-05

申请号：US437027

申请日：1982-10-27

申请人： Osamu Akisue ,  Teruaki Yamada ,  Shigeru Ueda ,  Yoshikuni Tokunaga ,  Masato Yamada

发明人： Osamu Akisue ,  Teruaki Yamada ,  Shigeru Ueda ,  Yoshikuni Tokunaga ,  Masato Yamada

IPC分类号： C22C38/00 ,  C21D8/02 ,  C21D8/04 ,  C21D9/48 ,  C22C38/14

CPC分类号： C22C38/14 ,  C21D8/0426 ,  C21D8/0436

摘要： Disclosed is a process for producing titanium-containing cold rolled steel sheets and strips which can stand very severe press forming, which process comprising hot rolling, coiling at a temperature not lower than 700.degree. C., cold rolling and continuous annealing at a temperature, from 700.degree. to 900.degree. C., for 20 seconds to 2 minutes.

摘要翻译： 公开了一种能够承受非常严格的压制成形的含钛冷轧钢板和带材的方法，该方法包括在不低于700℃的温度下进行热轧，卷取，在一定温度下进行冷轧和连续退火， 从700℃至900℃，持续20秒至2分钟。

公开(公告)号：US4315783A

公开(公告)日：1982-02-16

申请号：US085512

申请日：1979-10-17

申请人： Osamu Akisue ,  Teruaki Yamada ,  Munetsugu Matsuo ,  Norimasa Uehara

发明人： Osamu Akisue ,  Teruaki Yamada ,  Munetsugu Matsuo ,  Norimasa Uehara

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

CPC分类号： C21D8/0426 ,  C21D8/0436 ,  C21D8/0473

摘要： A method of producing a non-ageing cold rolled steel strip having excellent deep-drawability, with a r value of 1.5 or higher and ageing index of not higher than 3 kg/mm.sup.2 from an Al-killed steel with a lowered carbon content between 0.001 and 0.0035% and with no special additives such as titanium by a relatively low temperature coiling in the hot rolling, and a short-time continuous annealing without over-ageing, thus over-coming the disadvantages caused by a high temperature coiling and by additional over-ageing.

摘要翻译： 一种生产具有优异的深拉伸性，具有优异的1.5％以上的非老化冷轧钢带和老化指数不高于3kg / mm2的方法，该方法从具有降低的碳含量的Al- 0.0035％，在热轧中通过相对低温卷取而没有特殊添加剂如钛，以及短时间连续退火而不会过度老化，从而克服了由高温卷取引起的缺点， 老化。

公开(公告)号：US20120234438A1

公开(公告)日：2012-09-20

申请号：US13383193

申请日：2010-06-17

申请人： Satoshi Oi ,  Shigeyoshi Nishiyama ,  Fuyuki Yoshida ,  Yuji Kusumoto ,  Osamu Akisue

发明人： Satoshi Oi ,  Shigeyoshi Nishiyama ,  Fuyuki Yoshida ,  Yuji Kusumoto ,  Osamu Akisue

IPC分类号： C21D8/02 ,  C22C38/58 ,  C21D6/00

CPC分类号： C22C38/02 ,  C21D1/26 ,  C21D8/0236 ,  C21D9/0006 ,  C21D9/0037 ,  C21D9/46 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/50 ,  C22C38/58

摘要： Provided are a cold-rolled steel sheet which undergoes a small load at the time of cold-rolling, has excellent press formability and high strength, and a method of manufacturing the cold-rolled steel sheet. A hot-rolled steel sheet having the composition comprising by mass %, 0.10 to 0.30 C, 0.2 or more Mn, 0.01 or more Ni, 0.5 to 2.5 Mn+Ni, 1.2 to 9.0 Cr, and Fe and unavoidable impurities as a balance, and has a tensile strength of 1000 MPa or less is subjected to pickling and, is subjected to cold rolling at a total rolling reduction of 60% or more thus forming a cold-rolled steel sheet. A final continuous annealing treatment is performed at a soaking temperature of 750° C. or above and at a cooling rate of 3° C./s to 100° C./s so that the cold-rolled steel sheet which has a tensile strength of 1280 MPa or more, breaking elongation of 3% or more, and a thickness of 0.05 to 0.60 mm is manufactured.

摘要翻译： 本发明提供一种冷轧时的负荷小，冲压成形性，强度优异的冷轧钢板以及冷轧钢板的制造方法。 具有质量％，0.10〜0.30℃，0.2以上Mn，0.01以上Ni，0.5〜2.5Mn + Ni，1.2〜9.0Cr，Fe和余量不可避免的杂质的组成的热轧钢板， 并且具有1000MPa以下的拉伸强度进行酸洗，并且在总压下率为60％以上的条件下进行冷轧，从而形成冷轧钢板。 在750℃或以上的均热温度和3℃/ 100℃的冷却速度下进行最终的连续退火处理，使得具有拉伸强度的冷轧钢板 为1280MPa以上，断裂伸长率为3％以上，厚度为0.05〜0.60mm。

公开(公告)号：US5470403A

公开(公告)日：1995-11-28

申请号：US196098

申请日：1994-02-18

申请人： Naoki Yoshinaga ,  Kohsaku Ushioda ,  Osamu Akisue ,  Kunio Nishimura

发明人： Naoki Yoshinaga ,  Kohsaku Ushioda ,  Osamu Akisue ,  Kunio Nishimura

IPC分类号： C21D8/02 ,  C21D8/04 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/06 ,  B32B15/00

CPC分类号： C22C38/04 ,  C21D8/0273 ,  C22C38/06 ,  C23C2/02 ,  C23C2/06 ,  C21D8/0236 ,  C21D8/0278 ,  C21D8/04 ,  Y10T428/12799

摘要： The present invention provides a cold rolled steel sheet and a hot dip zinc-coated cold rolled steel sheet excellent in paint bake hardenability, non-aging properties and formability, and a process for producing the same. In the present invention, an extremely low carbon steel or extremely low carbon steel containing at least one element selected from the group consisting of Ti and Nb is used as a base steel, and Mn and Cr are positively added thereto, whereby the resultant steel has a mixed structure after annealing. Accordingly, there can be obtained a steel sheet having both a high paint bake hardenability and non-aging properties, and being excellent in formability such as an average r-value (deep drawability). With regard to the paint bake hardenability, the present invention may provide a cold rolled steel sheet and a hot dip zinc-coated cold rolled steel sheet to which paint bake hardening may be optionally imparted in an amount as large as about 10 kgf/mm.sup.2 and which also have non-aging properties.

摘要翻译： PCT No.PCT / JP93 / 00846 Sec。 371日期1994年2月18日 102（e）1994年2月18日PCT 1993年6月22日PCT公布。 出版物WO94 / 00615 日本1994年1月6日。本发明提供了优异的油漆烘烤硬化性，非时效性和成形性的冷轧钢板和热浸镀锌冷轧钢板及其制造方法。 在本发明中，使用含有选自Ti和Nb中的至少一种元素的极低碳钢或极低碳钢作为基础钢，并且向其中积极添加Mn和Cr，由此得到的钢具有 退火后的混合结构。 因此，可以获得具有高油漆烘烤硬化性和不老化性能的钢板，并且具有优异的成形性，例如平均r值（深冲性）。 关于油漆烘烤淬透性，本发明可以提供冷轧钢板和热浸镀锌冷轧钢板，其中可以任选地赋予大约10kgf / mm2的量的油漆烘烤硬化， 这也具有非老化性能。