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    Method of making low yield point cold-reduced steel sheet by continuous annealing process
    6.
    发明授权
    Method of making low yield point cold-reduced steel sheet by continuous annealing process 失效
    通过连续退火工艺制造低屈服点冷轧钢板的方法

    公开(公告)号：US4040873A

    公开(公告)日：1977-08-09

    申请号：US629525

    申请日：1975-11-06

    申请人： Kazuhide Nakaoka ,  Kenji Araki

    发明人： Kazuhide Nakaoka ,  Kenji Araki

    IPC分类号： C21C7/00 ,  B21B3/00 ,  C21D8/04 ,  C21D9/46 ,  C21D9/48 ,  C21D9/52 ,  C22C38/00

    CPC分类号： C21D8/0473 ,  C21D9/46 ,  C21D9/52 ,  C21D8/0426

    摘要： A low yield point cold-reduced steel sheet having excellent properties for press-forming can be obtained by a full continuous annealing process when a low carbon steel is manufactured by:1. chemical composition is substantially controlled at the steel making stage as follows,[0.sub.2 ] .ltoreq. 0.02%, preferably 0.014%, depending upon additions of Si and Al,[Si] .ltoreq. 0.2%, preferably 0.1% to 0.02%,[Sol.Al] .ltoreq. 0.009%, preferably 0.005%,2. at the hot-rolling stage after ordinary slabbing, a hot-rolled steel strip is coiled within the range of 650.degree. C to 800.degree. C, and3. at the continuous annealing stage after ordinary pickling - cold-reducing, a cold-reduced steel strip is subjected to a full continuous annealing including an over-aging treatment.

    摘要翻译： 当通过以下方法制造低碳钢时，可以通过全连续退火工艺获得具有优异的压制成形性能的低屈服点冷轧钢板：

    Method of producting thin sheet of high Si-Fe alloy
    7.
    发明授权
    Method of producting thin sheet of high Si-Fe alloy 失效
    生产高Si-Fe合金薄板的方法

    公开(公告)号：US4715905A

    公开(公告)日：1987-12-29

    申请号：US833394

    申请日：1986-02-10

    申请人： Kazuhide Nakaoka ,  Yoshikazu Takada ,  Junichi Inagaki ,  Akira Hiura

    发明人： Kazuhide Nakaoka ,  Yoshikazu Takada ,  Junichi Inagaki ,  Akira Hiura

    IPC分类号： C21D8/12 ,  H01F1/16 ,  H01F1/04

    CPC分类号： C21D8/1211 ,  C21D8/1227 ,  C21D8/1233

    摘要： Fe alloy containing Si more than 4.0 wt % is produced by a thin plate casting process. The producing condition depends upon rapid solidification of Fe alloy from a molten condition at cooling rate of more than 1.degree. C./sen to less than 10.sup.5 .degree. C./sec.The obtained thin cast plates are subjected to a hot rolling of more than 30% at the temperature range of 600.degree. to 800.degree. C., and to the cold rolling to a determined thickness, followed pickling. By the above mentioned conditions, operations of the industrial scale may be practiced without cracks on the surface in the cold rolling excellent magnetic characteristics may be provided by passing the annealing after the cold rolling.

    摘要翻译： PCT No.PCT / JP85 / 00534 Sec。 371日期1986年2月10日 102（e）日期1986年2月10日PCT提交1985年9月26日PCT公布。 公开号WO86 / 02102 日期为1986年4月10日。通过薄板铸造工艺制备含有大于4.0重量％的Si的Fe合金。 制造条件取决于Fe合金从熔融条件下以大于1℃/ sec的冷却速度快速凝固至小于105℃/秒。 将得到的薄板坯在600〜800℃的温度范围内进行30％以上的热轧，并进行冷轧至确定的厚度，然后进行酸洗。 通过上述条件，可以在冷轧时在表面上没有裂纹地进行工业规模的操作，可以通过在冷轧后进行退火来提供优异的磁特性。

    Method of producing silicon iron sheet having excellent soft magnetic properties
    8.
    发明授权
    Method of producing silicon iron sheet having excellent soft magnetic properties 失效
    具有优异软磁特性的硅铁片的制造方法

    公开(公告)号：US4773948A

    公开(公告)日：1988-09-27

    申请号：US22642

    申请日：1987-01-30

    申请人： Kazuhide Nakaoka ,  Yoshikazu Takada ,  Junichi Inagaki ,  Akira Hiura

    发明人： Kazuhide Nakaoka ,  Yoshikazu Takada ,  Junichi Inagaki ,  Akira Hiura

    IPC分类号： B21B3/02 ,  C21D8/12 ,  C22C38/00 ,  H01F1/16 ,  H01F1/04

    CPC分类号： C21D8/1222

    摘要： Fe alloy containing Si: 4.0 to 7.0 wt %, Mn: not more than 0.5 wt %, P: not more than 0.1 wt %, S: not more than 0.02 wt %, Al: not more than 2 wt % is molten, and made an ingot or continuously cast into a piece. The piece is subjected to slabbing-roughing, otherwise roughing at temperature of more than 1000.degree. C. and at total reduction of more than 50%, and further a hot finish rolling. The hot finish rolling is performed at temperature of not more than 1100.degree. C. and under a total reduction which is specified by a relation between average grain diameter before the hot finish rolling and Si content, and coiled at temperature of not more than 750.degree. C. after the rolling. The hot rolled plate is performed with cold rolling or warm rolling after the descaling and hot rolled strip annealing. If required, an intermediate annealing is performed in the course of the cold (or warm) rolling.

    摘要翻译： PCT No.PCT / JP86 / 00300 Sec。 371日期1987年1月30日 102（e）1987年1月30日PCT PCT 1986年6月13日PCT公布。 公开号WO86 / 07390 1986年12月18日，含有Si的Fe合金：4.0〜7.0重量％，Mn：0.5重量％以下，P：0.1重量％以下S：0.02重量％以下Al：不大于 2重量％熔融，制成锭或连铸成片。 将该片材进行板坯粗加工，否则在高于1000℃的温度下进行粗加工并总共减少50％以上，进一步进行热精轧。 热精轧在不超过11​​00℃的温度下进行，并且在由热精轧前的平均粒径与Si含量之间的关系规定的总还原量下进行，并且在不高于750℃的温度下盘卷 C.滚动后。 热轧板在除锈和热轧带钢退火后进行冷轧或暖轧。 如果需要，在冷（或热）轧制过程中进行中间退火。

    Method for producing thin steel sheet of high magnetic permeability
    9.
    发明授权
    Method for producing thin steel sheet of high magnetic permeability 失效
    高磁导率薄钢板的制造方法

    公开(公告)号：US4832762A

    公开(公告)日：1989-05-23

    申请号：US845873

    申请日：1986-03-03

    申请人： Kazuhide Nakaoka ,  Yoshikazu Takada ,  Yasushi Tanaka

    发明人： Kazuhide Nakaoka ,  Yoshikazu Takada ,  Yasushi Tanaka

    IPC分类号： C21D8/12 ,  C23C10/08 ,  H01F1/147

    CPC分类号： H01F1/14783 ,  C21D8/1255 ,  C23C10/08 ,  H01F1/14775

    摘要： An ordinarily made thin steel sheet is placed in an atmosphere bearing SiCl.sub.4, and subjecting to Si penetrating treatment at temperatures between 1100.degree. C. and 1200.degree. C. for a determined period of time. A heating rate is used which is more than 50.degree. C./sec at the temperatures of more than 1000.degree. C. in the SiCl.sub.4 atmosphere.Thereby, it is possible to manufacture thin steel sheet of high magnetic permeability without internal defects.

    摘要翻译： PCT No.PCT / JP85 / 00535 Sec。 一九八六年三月三日 102（e）1986年3月3日PCT PCT日期：1985年9月26日PCT公布。 公开号WO86 / 02105 日期：1986年4月10日。将通常制成的薄钢板放置在含有SiCl 4的气氛中，并在1100℃至1200℃的温度下进行Si渗透处理一段确定的时间。 在SiCl 4气氛中，在超过1000℃的温度下使用的加热速率大于50℃/秒。 由此，可以制造高磁导率而没有内部缺陷的薄钢板。

    Method for manufacturing high-strength cold-rolled steel strip excellent in press-formability
    10.
    发明授权
    Method for manufacturing high-strength cold-rolled steel strip excellent in press-formability 失效
    用于制造压制成形性优异的高强度冷轧钢带的方法

    公开(公告)号：US4336080A

    公开(公告)日：1982-06-22

    申请号：US208537

    申请日：1980-11-20

    申请人： Kazuhide Nakaoka ,  Akihiko Nishimoto ,  Yoshihiro Hosoya

    发明人： Kazuhide Nakaoka ,  Akihiko Nishimoto ,  Yoshihiro Hosoya

    IPC分类号： B21B3/00 ,  B21B3/02 ,  C21D1/18 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C21D9/48 ,  C22C38/00 ,  C22C38/04

    CPC分类号： C21D8/0473 ,  C21D1/18 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D8/0426

    摘要： A method for manufacturing a high-strength cold-rolled steel strip excellent in press-formability, which comprises the steps of: preparing a slab of an aluminum-killed steel consisting essentially of, in weight percentage:______________________________________ Carbon from 0.02 to 0.06%, Manganese from 0.06 to 0.25%, Phosphorus from 0.01 to 0.06%, Soluble aluminum from 0.020 to 0.060%, Nitrogen up to 0.005%, and ______________________________________ the balance iron and incidental impurities;hot-rolling said slab to prepare a hot-rolled steel strip; coiling said steel strip at a temperature within the range of from 650.degree. to 770.degree. C.; cold-rolling said hot-rolled steel strip thus coiled to prepare a cold-rolled steel strip; subjecting said cold-rolled steel strip to a continuous annealing treatment for a prescribed period of time at a temperature within the range of from 750.degree. to 880.degree. C.; cooling said cold-rolled steel strip continuously annealed at a cooling rate of at least: exp {-5.6 (Cwt. %.gamma.+Mn wt. %/6+Si wt. %/24)+7.8} .degree.C./sec from a temperature region of from Ar.sub.1 to Ar.sub.1 +60.degree. C. to convert the structure thereof into a dual-phase structure of ferrite and a low-temperature transformation phase; and then, subjecting said cold-rolled steel strip having said dual-phase structure to an over-ageing treatment for a prescribed period of time at a temperature within the range of from 260.degree. to 360.degree. C.

    摘要翻译： 一种制造压制成型性优异的高强度冷轧钢带的方法，包括以下步骤：制备基本上由重量百分数计的铝 - 镇静钢的板坯 - 0.02〜0.06％的碳钢， - 锰为0.06〜0.25％，磷为0.01〜0.06％， - 可溶性铝为0.020〜0.060％，氮为0.005％以下，余量为铁和杂质; 热轧所述板坯以制备热轧钢带; 将所述钢带卷绕在650〜770℃的温度范围内。 冷轧所述热轧钢带，由此卷成制备冷轧钢带; 在750〜880℃的温度范围内对所述冷轧钢带进行连续退火处理规定的时间; 冷却所述冷轧钢带以至少：exp {-5.6（Cwt。％γ+ Mn wt。％/ 6 + Si wt。％/ 24）+7.8}℃/ s的冷却速率连续退火 将Ar1〜Ar1 + 60℃的温度区域变换成铁素体和低温相变相的双相组织， 然后将所述具有所述双相结构的所述冷轧钢带在260至360℃的温度范围内进行过时效处理规定的时间。