公开(公告)号：US20130142688A1

公开(公告)日：2013-06-06

申请号：US13817042

申请日：2012-02-23

申请人： Kenichi Yamamoto ,  Hideaki Yamamura ,  Yuzo Takahashi ,  Osamu Kawano ,  Kohsuke Kume ,  Junji Haji ,  Daisuki Maeda ,  Yoshihiro Suwa

发明人： Kenichi Yamamoto ,  Hideaki Yamamura ,  Yuzo Takahashi ,  Osamu Kawano ,  Kohsuke Kume ,  Junji Haji ,  Daisuki Maeda ,  Yoshihiro Suwa

IPC分类号： C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/38 ,  C22C38/32 ,  C22C38/26 ,  C22C38/18 ,  C22C38/16 ,  C22C38/12 ,  C22C38/08 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C1/00

CPC分类号： C22C38/58 ,  C21C7/06 ,  C21C7/0645 ,  C22C1/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  C22C38/26 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

摘要： The present invention provides a high-strength steel sheet including: C: 0.03 to 0.25 mass %, Si: 0.1 to 2.0 mass %, Mn: 0.5 to 3.0 mass %, P: not more than 0.05 mass %, T.O: not more than 0.0050 mass %, S: 0.0001 to 0.01 mass %, N: 0.0005 to 0.01 mass %, acid-soluble Al: more than 0.01 mass %, Ca: 0.0005 to 0.0050 mass %, and a total of at least one element of Ce, La, Nd, and Pr: 0.001 to 0.01 mass %, with a balance including iron and inevitable impurities, in which the steel sheet contains a chemical component on a basis of mass that satisfies 0.7

摘要翻译： 本发明提供一种高强度钢板，其含有：C：0.03〜0.25质量％，Si：0.1〜2.0质量％，Mn：0.5〜3.0质量％，P：0.05质量％以下，TO：不大于 0.0050质量％，S：0.0001〜0.01质量％，N：0.0005〜0.01质量％，酸溶性Al：0.01质量％以上，Ca：0.0005〜0.0050质量％，Ce， La，Nd和Pr：0.001〜0.01质量％，余量包括铁和不可避免的杂质，其中钢板含有基于满足0.7 <100×（[Ce] + [La] + [Nd] + [Pr]）/ [酸溶性Al] 70和0.2 @（[Ce] + [La] + [Nd] + [Pr]）/ [S] 包含包含含有Ca，La，Nd和Pr的至少一种元素的含有Ca，并且含有至少一种O和S元素的第一包含相和包含与第一夹杂物不同的成分的第二夹杂相 并含有Mn，Si和Al中的至少一种元素 nd夹杂物形成球形化合物夹杂物，其当量圆直径在0.5μm至5μm的范围内，并且球形化合物夹杂物的数量相对于具有当量圆直径的所有夹杂物的数量的比率在0.5的范围内 妈妈到5个妈妈是30％以上。

公开(公告)号：US09617626B2

公开(公告)日：2017-04-11

申请号：US13817042

申请日：2012-02-23

申请人： Kenichi Yamamoto ,  Hideaki Yamamura ,  Yuzo Takahashi ,  Osamu Kawano ,  Kohsuke Kume ,  Junji Haji ,  Daisuke Maeda ,  Yoshihiro Suwa

发明人： Kenichi Yamamoto ,  Hideaki Yamamura ,  Yuzo Takahashi ,  Osamu Kawano ,  Kohsuke Kume ,  Junji Haji ,  Daisuke Maeda ,  Yoshihiro Suwa

IPC分类号： C22C38/58 ,  C22C38/00 ,  C22C38/02 ,  C22C38/26 ,  C22C38/32 ,  C22C38/38 ,  C22C1/00 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/42 ,  C22C38/06 ,  C22C38/18 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C21C7/064 ,  C21C7/06

CPC分类号： C22C38/58 ,  C21C7/06 ,  C21C7/0645 ,  C22C1/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  C22C38/26 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

摘要： The present invention provides a high-strength steel sheet including: C: 0.03 to 0.25 mass %, Si: 0.1 to 2.0 mass %, Mn: 0.5 to 3.0 mass %, P: not more than 0.05 mass %, T.O: not more than 0.0050 mass %, S: 0.0001 to 0.01 mass %, N: 0.0005 to 0.01 mass %, acid-soluble Al: more than 0.01 mass %, Ca: 0.0005 to 0.0050 mass %, and a total of at least one element of Ce, La, Nd, and Pr: 0.001 to 0.01 mass %, with a balance including iron and inevitable impurities, in which the steel sheet contains a chemical component on a basis of mass that satisfies 0.7

公开(公告)号：US09121079B2

公开(公告)日：2015-09-01

申请号：US13583537

申请日：2011-03-09

申请人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

发明人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

IPC分类号： C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  B21B3/00 ,  C21D9/46 ,  C22C38/00

CPC分类号： C21D8/0226 ,  B21B3/00 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/005 ,  C22C38/06 ,  C22C38/14

摘要： On a cross section with a sheet width direction of a high-strength hot-rolled steel sheet set as a normal line, with regard to an inclusion having a major diameter of 3.0 μm or more, a maximum of a major diameter/minor diameter ratio expressed by (a major diameter of the inclusion)/(a minor diameter of the inclusion) is 8.0 or less, and a sum total of a rolling direction length per 1 mm2 cross section of a predetermined inclusion group composed of plural inclusions each having a major diameter of 3.0 μm or more and a predetermined extended inclusion having a length in a rolling direction of 30 μm or more is 0.25 mm or less. The plural inclusions composing the predetermined inclusion group congregate in both the rolling direction and a direction perpendicular to the rolling direction 50 μm or less apart from each other. The predetermined extended inclusion is spaced over 50 μm apart from all the inclusions each having a major diameter of 3.0 μm or more in at least either the rolling direction or the direction perpendicular to the rolling direction.

摘要翻译： 在作为法线设定的高强度热轧钢板的板宽方向的截面上，对于长径为3.0μm以上的夹杂物，最大直径/小直径比的最大值 由（夹杂物的主直径）/（夹杂物的微小直径）表示为8.0以下，并且由包含多个夹杂物的预定夹杂物组成的每1mm 2截面的轧制方向长度的总和 长径为3.0μm以上，预定长度为30μm以上的轧制方向的延伸夹杂物为0.25mm以下。 组成预定夹杂物的多个夹杂物在轧制方向和垂直于轧制方向的方向上聚集在50μm以下。 预定的延伸夹杂物在至少轧制方向或与轧制方向垂直的方向的至少任一个中具有大于3.0μm或更大的所有夹杂物的间隔超过50μm。

公开(公告)号：US20130000791A1

公开(公告)日：2013-01-03

申请号：US13583537

申请日：2011-03-09

申请人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

发明人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

IPC分类号： C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/38 ,  C22C38/08 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C21D11/00 ,  C22C38/14

CPC分类号： C21D8/0226 ,  B21B3/00 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/005 ,  C22C38/06 ,  C22C38/14

摘要： On a cross section with a sheet width direction of a high-strength hot-rolled steel sheet set as a normal line, with regard to an inclusion having a major diameter of 3.0 μm or more, a maximum of a major diameter/minor diameter ratio expressed by (a major diameter of the inclusion)/(a minor diameter of the inclusion) is 8.0 or less, and a sum total of a rolling direction length per 1 mm2 cross section of a predetermined inclusion group composed of plural inclusions each having a major diameter of 3.0 μm or more and a predetermined extended inclusion having a length in a rolling direction of 30 μm or more is 0.25 mm or less. The plural inclusions composing the predetermined inclusion group congregate in both the rolling direction and a direction perpendicular to the rolling direction 50 μm or less apart from each other. The predetermined extended inclusion is spaced over 50 μm apart from all the inclusions each having a major diameter of 3.0 μm or more in at least either the rolling direction or the direction perpendicular to the rolling direction.

摘要翻译： 在作为法线设定的高强度热轧钢板的板宽方向的截面上，对于长径为3.0μm以上的夹杂物，最大直径/小直径比的最大值 由（夹杂物的主直径）/（夹杂物的微小直径）表示为8.0以下，并且由包含多个夹杂物的预定夹杂物组成的每1mm 2截面的轧制方向长度的总和 长径为3.0μm以上，预定长度为30μm以上的轧制方向的延伸夹杂物为0.25mm以下。 组成预定夹杂物的多个夹杂物在轧制方向和垂直于轧制方向的方向上聚集在50μm以下。 预定的延伸夹杂物在至少轧制方向或与轧制方向垂直的方向的至少任一个中具有大于3.0μm或更大的所有夹杂物的间隔超过50μm。

公开(公告)号：US09732405B2

公开(公告)日：2017-08-15

申请号：US14004858

申请日：2012-03-16

申请人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

发明人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C21D8/02 ,  C22C38/00 ,  C22C38/14 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/38

CPC分类号： C22C38/28 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38

摘要： A hot rolled steel sheet includes, as a chemical composition, at least one selected from Ti, REM, and Ca, and includes, as a metallographic structure, a ferrite as a primary phase, at least one of a martensite and a residual austenite as a secondary phase, and plural inclusions, wherein a total length in the rolling direction of both inclusion-cluster whose length in the rolling direction is 30 μm or more and independent-inclusion whose length in the rolling direction is 30 μm or more is 0 mm to 0.25 mm per 1 mm2.

公开(公告)号：US20140000769A1

公开(公告)日：2014-01-02

申请号：US14004858

申请日：2012-03-16

申请人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

发明人： Yuzo Takahashi ,  Junji Haji ,  Osamu Kawano

IPC分类号： C21D8/02 ,  C22C38/28 ,  C22C38/16 ,  C22C38/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/38 ,  C22C38/12

CPC分类号： C22C38/28 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38

摘要： A hot rolled steel sheet includes, as a chemical composition, at least one selected from Ti, REM, and Ca, and includes, as a metallographic structure, a ferrite as a primary phase, at least one of a martensite and a residual austenite as a secondary phase, and plural inclusions, wherein a total length in the rolling direction of both inclusion-cluster whose length in the rolling direction is 30 μm or more and independent-inclusion whose length in the rolling direction is 30 μm or more is 0 mm to 0.25 mm per 1 mm2.

摘要翻译： 作为化学组成，热轧钢板包含选自Ti，REM，Ca中的至少一种，作为金相组织，以铁素体为主相，将马氏体和残余奥氏体中的至少一种作为 二次相和多个夹杂物，其中轧制方向的长度为30μm以上的夹杂物的卷取方向的总长度和轧制方向的长度为30μm以上的独立包含体为0mm 至0.25mm / 1mm 2。

公开(公告)号：US10023931B2

公开(公告)日：2018-07-17

申请号：US12225170

申请日：2007-03-28

申请人： Junji Haji ,  Kaoru Kawasaki ,  Kiyokazu Ishizuka ,  Teruaki Yamada

发明人： Junji Haji ,  Kaoru Kawasaki ,  Kiyokazu Ishizuka ,  Teruaki Yamada

IPC分类号： C23C2/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/04 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28

摘要： The present invention provides a method of production of hot dip galvannealed steel sheet with excellent workability compared with the Sendzimir method or non-oxidizing furnace method and further with excellent powdering or slidability, that is, a method of production of hot dip galvannealed steel sheet with excellent workability, powdering, and slidability characterized by processing a slab containing, by mass %, C: 0.01 to 0.12%, Mn: 0.05 to 0.6%, Si: 0.002 to 0.1%, P: 0.05% or less, S: 0.03% or less, sol. Al: 0.005 to 0.1%, and N: 0.01% or less and having a balance of Fe and unavoidable impurities by hot rolling, pickling, cold rolling, then annealing at 650 to 900° C., cooling to 250 to 450° C., holding at said temperature range for 120 seconds or more, then cooling to room temperature, pickling, preplating Ni or Ni—Fe without intermediate temper rolling, heating by 5° C./sec or more down to 430 to 500° C., galvanizing in a galvanization bath, wiping, then heating by a rate of temperature rise of 20° C./sec or more up to 460 to 550° C., not providing any soaking time or holding for soaking for less than 5 seconds, then cooling by 3° C./sec or more, and final temper rolling by a 0.4 to 2% elongation rate.

公开(公告)号：US08303739B2

公开(公告)日：2012-11-06

申请号：US11912037

申请日：2006-04-14

申请人： Kiyokazu Ishizuka ,  Kazumi Nishimura ,  Ikuo Kikuchi ,  Kaoru Kawasaki ,  Junji Haji

发明人： Kiyokazu Ishizuka ,  Kazumi Nishimura ,  Ikuo Kikuchi ,  Kaoru Kawasaki ,  Junji Haji

IPC分类号： C21D9/46 ,  B05D3/02

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

摘要： Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.

摘要翻译： 本发明的示例性实施例可提供一种显示高强度，高延展性和显着程度的合金化的热浸镀锌合金化钢板的制造方法。 这种示例性方法可以应用于例如酸洗热轧钢板或包含约0.02％至约0.2％C和约0.15％至约2.5％Mn之间的退火和酸洗冷轧钢板，并且可以包括一种 或更多的用于冲洗片材的程序，用Ni预涂片材，在非氧化气氛中快速加热片材至约430℃至500℃的片材温度，然后将该片材浸渍在含有 约0.05％和约0.2％的Al，然后立即快速加热片材进行合金化处理。 这种示例性方法可以提供改进的合金化速度，改善的电镀外观和更好的电镀附着力。

公开(公告)号：US20090211668A1

公开(公告)日：2009-08-27

申请号：US11912037

申请日：2006-04-14

申请人： Kiyokazu Ishizuka ,  Kazumi Nishimura ,  Ikuo Kikuchi ,  Kaoru Kawasaki ,  Junji Haji

发明人： Kiyokazu Ishizuka ,  Kazumi Nishimura ,  Ikuo Kikuchi ,  Kaoru Kawasaki ,  Junji Haji

IPC分类号： C21D9/46

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

摘要： Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.

摘要翻译： 本发明的示例性实施例可提供一种显示高强度，高延展性和显着程度的合金化的热浸镀锌合金化钢板的制造方法。 这种示例性方法可以应用于例如酸洗热轧钢板或包含约0.02％至约0.2％C和约0.15％至约2.5％Mn之间的退火和酸洗冷轧钢板，并且可以包括一种 或更多的用于冲洗片材的程序，用Ni预涂片材，在非氧化气氛中快速加热片材至约430℃至500℃的片材温度，然后将该片材浸渍在含有 约0.05％和约0.2％的Al，然后立即快速加热片材进行合金化处理。 这种示例性方法可以提供改进的合金化速度，改善的电镀外观和更好的电镀附着力。

公开(公告)号：US08617324B2

公开(公告)日：2013-12-31

申请号：US13614533

申请日：2012-09-13

申请人： Kiyokazu Ishizuka ,  Kazumi Nishimura ,  Ikuo Kikuchi ,  Kaoru Kawasaki ,  Junji Haji

发明人： Kiyokazu Ishizuka ,  Kazumi Nishimura ,  Ikuo Kikuchi ,  Kaoru Kawasaki ,  Junji Haji

IPC分类号： C23C2/28 ,  B05D3/02

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

摘要： Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.

摘要翻译： 本发明的示例性实施例可提供一种显示高强度，高延展性和显着程度的合金化的热浸镀锌合金化钢板的制造方法。 这种示例性方法可以应用于例如酸洗热轧钢板或包含约0.02％至约0.2％C和约0.15％至约2.5％Mn之间的退火和酸洗冷轧钢板，并且可以包括一种 或更多的用于冲洗片材的程序，用Ni预涂片材，在非氧化气氛中快速加热片材至约430℃至500℃的片材温度，然后将该片材浸渍在含有 约0.05％和约0.2％的Al，然后立即快速加热片材进行合金化处理。 这种示例性方法可以提供改进的合金化速度，改善的电镀外观和更好的电镀附着力。