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    Cold-rolled steel sheet for deep drawing and method of producing the same
    4.
    发明授权
    Cold-rolled steel sheet for deep drawing and method of producing the same 失效
    深拉深冷轧钢板及其制造方法

    公开(公告)号：US5041166A

    公开(公告)日：1991-08-20

    申请号：US576661

    申请日：1990-08-31

    申请人： Saiji Matsuoka ,  Susumu Satoh ,  Hideo Abe ,  Nobuhiko Uesugi

    发明人： Saiji Matsuoka ,  Susumu Satoh ,  Hideo Abe ,  Nobuhiko Uesugi

    IPC分类号： C21D8/04

    CPC分类号： C22C38/60 ,  C21D8/0468 ,  C22C38/002 ,  C22C38/004 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C21D8/0436 ,  C21D8/0473

    摘要： A cold-rolled steel sheet suitable for deep drawing has a composition containing up to about 0.005 wt % of C, up to about 0.1 wt % of Si, up to about 1.0 wt % of Mn, up to about 0.1 wt % of P, up to about 0.05 wt % of S, about 0.01 to 0.10 wt % of Al, up to about 0.005 wt % of N, one, two or more elements selected from the group consisting of about 0.01 to 0.15 wt % of Ti, about 0.001 to 0.05 wt % of Nb and about 0.0001 to 0.0020 wt % of B, and the balance substantially Fe and incidental impurities. The steel sheet exhibits a Lankford value (r-value) of about r.gtoreq.2.8 and also exhibits the difference (r.sub.max -r.sub.min) between the maximum value r.sub.max and the minimum value r.sub.min satisfying the condition of (r.sub.max -r.sub.min).ltoreq.about 0.5. The steel sheet is produced by a process having the steps of: conducting hot-rolling on the steel material of the above-described composition; conducting a primary cold rolling at a rolling reduction not smaller than about 30%; conducting intermediate annealing at a temperature ranging between the recrystallization temperature and about 920.degree.; conducting secondary cold rolling at a rolling reduction not smaller than about 30% so as to provide a total rolling reduction not smaller than about 78%; and conducting final annealing at a temperature which is between the recrystallization temperature and about 920.degree. C.

    Method of manufacturing steel sheet having excellent deep-drawability
    5.
    发明授权
    Method of manufacturing steel sheet having excellent deep-drawability 失效
    具有优异的深冲性的钢板的制造方法

    公开(公告)号：US4973367A

    公开(公告)日：1990-11-27

    申请号：US454923

    申请日：1989-12-22

    申请人： Saiji Matsuoka ,  Susumu Satoh ,  Toshiyuki Katoh ,  Hideo Abe ,  Ikuo Yarita

    发明人： Saiji Matsuoka ,  Susumu Satoh ,  Toshiyuki Katoh ,  Hideo Abe ,  Ikuo Yarita

    IPC分类号： C21D8/04

    CPC分类号： C21D8/0426 ,  C21D8/0431 ,  C21D8/0463 ,  C21D8/0478

    摘要： A method of manufacturing a steel sheet having excellent deep-drawability. A steel blank is rolled into a steel sheet having a predetermined thickness. The steel contains C: not more than 0.008 wt %, Si: not more than 0.5 wt %, Mn: not more than 1.0 wt %, P: not more than 0.15 wt %, S: not more than 0.02 wt %, Al: 0.010 to 0.10 wt %, N: not more than 0.008 wt %, and at least one element selected from the group consisting of Ti and Nb which is contained in an amount satisfying the relationship of 1.2 (C/12+N/14).ltoreq.(Ti/48+Nb/93). In at least one pass, rolling is conducted within a temperatures range lower than the Ar3 transformation point but not lower than 500.degree. C., in such a manner that the roll radius R (mm) and the blank thickness t (mm) before rolling by rolls satisfy the relationships of R.ltoreq.200 and R.sup.2 .times..sqroot.t.ltoreq.100000, and the total rolling reduction at temperature lower than the Ar3 transformation point is not lower than 60%. The hot-rolled steel sheet possesses a high level of Lankford value, and is free from cold-working embrittlement. The method may include the step of obtaining, after the rolling, pickling, annealing and hot dip galvanizing under certain conditions, a surface-treated steel sheet having excellent deep-drawability.

    Method of producing cold rolled steel sheets for deep drawing
    7.
    发明授权
    Method of producing cold rolled steel sheets for deep drawing 失效
    深冲压冷轧钢板的制造方法

    公开(公告)号：US4576656A

    公开(公告)日：1986-03-18

    申请号：US768927

    申请日：1985-08-26

    申请人： Susumu Satoh ,  Takashi Obara ,  Minoru Nishida

    发明人： Susumu Satoh ,  Takashi Obara ,  Minoru Nishida

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

    CPC分类号： C21D8/0426 ,  C21D8/041

    摘要： The present invention relates to a method of producing a cold rolled steel sheet for deep drawing. In order to improve the deep drawability (r-value), ductility (yield strength and elongation El) and the like of cold rolled sheet of ultra-low carbon aluminum killed steel, the chemical composition (% by weight) of the steel is adjusted such that the steel contains C: .ltoreq.0.015%, Mn: .ltoreq.0.4%, P: .ltoreq.0.03%, sol. Al: 0.005-0.100%, N: .ltoreq.0.010%, Ti (exclusive of Ti present in the form of oxide): in an amount satisfying a formula of ##EQU1## the hot rolling of the steel slab is effected at a soaking temperature lower than 1,100.degree. C. and at a finishing temperature of 600.degree.-780.degree. C. As illustrated in the drawings, a low temperature rolling can be carried out, and the resulting cold rolled steel sheet is excellent in the deep drawability and ductility and further excellent in the treatable property of the surface and in the surface property. Therefore, the cold rolled steel sheet is particularly suitable for the production of automotive exterior plate.

    摘要翻译： PCT No.PCT / JP83 / 00334 Sec。 371日期1984年3月15日 102（e）日期1984年3月15日PCT提交1983年10月7日PCT公布。 公开号WO84 / 01585 1984年4月26日。深拉深冷轧钢板的制造方法技术领域本发明涉及一种深拉深冷轧钢板的制造方法。 为了提高超低碳铝杀死钢的冷轧板的深冲性（r值），延展性（屈服强度和伸长率E1）等，调整钢的化学成分（重量％） 使得钢含有C：0.015％，Mn：0.4％，P：0.03％，溶胶。 Al：0.005-0.100％，N：<= 0.010％，Ti（以氧化物形式存在的Ti除外）：满足公式“IMAGE”的钢的平均热轧是在均热 温度低于1100℃，最终温度为600〜-780℃。如图所示，可以进行低温轧制，所得到的冷轧钢板的深冲性和延展性优异 并且表面的可处理性能和表面性能也更优异。 因此，冷轧钢板特别适用于制造汽车外板。

    Cold rolled dual-phase structure steel sheet having an excellent deep drawability and a method of manufacturing the same
    8.
    发明授权
    Cold rolled dual-phase structure steel sheet having an excellent deep drawability and a method of manufacturing the same 失效
    具有优异的深冲性的冷轧双相结构钢板及其制造方法

    公开(公告)号：US4615749A

    公开(公告)日：1986-10-07

    申请号：US790641

    申请日：1985-10-23

    申请人： Susumu Satoh ,  Hideo Suzuki ,  Takashi Obara ,  Minoru Nishida ,  Osamu Hashimoto

    发明人： Susumu Satoh ,  Hideo Suzuki ,  Takashi Obara ,  Minoru Nishida ,  Osamu Hashimoto

    IPC分类号： C22C38/00 ,  C21D8/02 ,  C21D8/04 ,  C21D9/48 ,  C21D9/52 ,  C22C38/06 ,  C22C38/12 ,  C22C38/32 ,  C21D9/46 ,  C21D7/02 ,  C21D7/14

    CPC分类号： C22C38/06 ,  C21D8/0473 ,  C22C38/12 ,  C21D2211/00 ,  C21D2211/005 ,  C21D8/0426 ,  C21D9/52

    摘要： A cold rolled dual-phase structure steel sheet having an excellent deep drawability is disclosed, which consists of ferrite phase and low temperature transformation product phase and comprises 0.001-0.008 wt % of C, not more than 1.0 wt % of Si, 0.05-1.8 wt % of Mn, not more than 0.15 wt % of P, 0.01-0.10 wt % of Al, 0.002-0.050 wt % of Nb and 0.0005-0.0050 wt % of B provided that the value of Nb (%)+10B (%) is in a range of 0.010-0.080%, and, if necessary, 0.05-1.00 wt % of Cr and the balance being substantially Fe with inevitable impurities. This steel sheet is manufactured by hot and cold rolling a steel slab with the above chemical composition and continuously annealing the resulting steel sheet in such a manner than the steel sheet is heated and soaked at a temperature from .alpha..fwdarw..gamma. transformation point to 1,000.degree. C. and then cooled at an average cooling rate of not less than 0.5.degree. C./sec but less than 20.degree. C./sec in a temperature range of from the soaking temperature to 750.degree. C., and subsequently at an average cooling rate of not less than 20.degree. C./sec in a temperature range of from 750.degree. C. to not more than 300.degree. C.

    摘要翻译： 公开了一种具有优异深冲性的冷轧双相结构钢板，由铁素体相和低温相变产物相组成，含有0.001-0.008重量％的C，不大于1.0重量％的Si，0.05-1.8 Nb的重量％，P：0.15重量％以下，Al：0.01〜0.10重量％，Nb：0.002〜0.050重量％，B：0.0005〜0.0050重​​量％ ）在0.010-0.080％的范围内，并且如果需要，为0.05-1.00重量％的Cr，余量基本上为Fe和不可避免的杂质。 该钢板是通过对具有上述化学成分的钢板进行热轧和冷轧制造的，并且以不同于钢板在α→γ转变点至1000°的温度下加热和浸泡的方式连续退火所得到的钢板 然后在均热温度至750℃的温度范围内以不低于0.5℃/秒但小于20℃/秒的平均冷却速率冷却，随后以平均冷却 在750℃至不超过300℃的温度范围内不低于20℃/秒的速率

    Method of producing steel sheets for porcelain enameling having improved enamel adhesion property
    9.
    发明授权
    Method of producing steel sheets for porcelain enameling having improved enamel adhesion property 失效
    生产钢板的方法，用于具有改进的ENAMEL粘合性能的电镀

    公开(公告)号：US5152846A

    公开(公告)日：1992-10-06

    申请号：US651247

    申请日：1991-03-13

    申请人： Kazunori Osawa ,  Susumu Satoh ,  Hideo Abe

    发明人： Kazunori Osawa ,  Susumu Satoh ,  Hideo Abe

    IPC分类号： C21D8/02 ,  C23D3/00

    CPC分类号： C21D8/0278 ,  C23D3/00 ,  C21D8/0273

    摘要： Activation of steel sheet surface by subjecting to a pickling treatment after recrystallization annealing and before forming in the production steps of steel sheets for coating porcelain enameling. Continuously cast slabs are used as a starting steel, and the resulting sheet realizes an improved adhesion property, to porcelain glaze without causing fishscale, blistering and pinhole defects and the like even when using a glaze not requiring pickling with sulfuric acid, Ni flashing or the like as an enameling glaze.

    摘要翻译： PCT No.PCT / JP90 / 00928 Sec。 371日期1991年3月13日 102（e）1991年3月13日PCT PCT 1990年7月18日PCT公布。 第WO91 / 01390号公报 日期：1991年2月7日。通过在再结晶退火后的酸洗处理和在用于涂覆瓷搪瓷的钢板的制造步骤中成形之前对钢板表面进行活化。 使用连续铸造的板坯作为起始钢，并且所得到的片材实现了改善的粘合性能，即使使用不需要用硫酸酸洗的釉料，Ni闪光或者不使用酸洗的釉料，瓷砖也不会引起鱼鳞，起泡和针孔缺陷等 像搪瓷釉。