公开(公告)号：US09988697B2

公开(公告)日：2018-06-05

申请号：US14110896

申请日：2012-04-12

申请人： Yoshihiro Suwa ,  Kazuaki Nakano ,  Kunio Hayashi ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kohichi Sano

发明人： Yoshihiro Suwa ,  Kazuaki Nakano ,  Kunio Hayashi ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kohichi Sano

IPC分类号： C21D8/02 ,  C22C38/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C21D8/04 ,  B32B15/01 ,  C22C38/08 ,  C22C38/10 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/22 ,  C23C2/06 ,  C23C2/28 ,  C23C2/36

CPC分类号： C21D9/46 ,  B32B15/013 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0473 ,  C21D2201/05 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/105 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C23C2/06 ,  C23C2/285 ,  C23C2/36 ,  Y10T428/12799

摘要： This high-strength hot-rolled steel sheet having excellent local deformability contains, in mass %, C: 0.07% to 0.20%; Si: 0.001% to 2.5%; Mn: 0.01% to 4.0%; P: 0.001% to 0.15%; S: 0.0005% to 0.03%; Al: 0.001% to 2.0%; N: 0.0005% to 0.01%; and O: 0.0005% to 0.01%; and a balance being composed of iron and inevitable impurities, in which an area ratio of bainite in a metal structure is 95% or more, at a sheet thickness center portion being a range of ⅝ to ⅜ in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100} to {223} orientation group is 4.0 or less, and a pole density of the {332} crystal orientation is 5.0 or less, and a mean volume diameter of crystal grains in the metal structure is 10 μm or less.

公开(公告)号：US09347122B2

公开(公告)日：2016-05-24

申请号：US14110891

申请日：2012-04-12

申请人： Yoshihiro Suwa ,  Kazuaki Nakano ,  Kunio Hayashi ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kohichi Sano

发明人： Yoshihiro Suwa ,  Kazuaki Nakano ,  Kunio Hayashi ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kohichi Sano

IPC分类号： C21D8/02 ,  C21D8/04 ,  C22C38/22 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  B32B15/01 ,  C22C38/08 ,  C22C38/10 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C21D9/46

CPC分类号： C21D9/46 ,  B32B15/013 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0473 ,  C21D2201/05 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/105 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C23C2/06 ,  C23C2/285 ,  C23C2/36 ,  Y10T428/12799

摘要： This high-strength cold-rolled steel sheet contains, in mass %, C: 0.02% to 0.20%; Si: 0.001% to 2.5%; Mn: 0.01% to 4.0%; P: 0.001% to 0.15%; S: 0.0005% to 0.03%; Al: 0.001% to 2.0%; N: 0.0005% to 0.01%; and O: 0.0005% to 0.01%; in which Si+Al is limited to less than 1.0%, and a balance being composed of iron and inevitable impurities, in which an area ratio of bainite in a metal structure is 95% or more, at a sheet thickness center portion being a range of ⅝ to ⅜ in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100} to {223} orientation group is 4.0 or less, and a pole density of the {332} crystal orientation is 5.0 or less, and a mean volume diameter of crystal grains in the metal structure is 7 μm or less.

摘要翻译： 该高强度冷轧钢板以质量％计含有C：0.02〜0.20％ Si：0.001〜2.5％ Mn：0.01〜4.0％ P：0.001〜0.15％ S：0.0005〜0.03％; Al：0.001〜2.0％ N：0.0005〜0.01％; 和O：0.0005％至0.01％; 其中Si + Al被限制在小于1.0％，余量由铁和不可避免的杂质构成，其中，贝氏体在金属结构体中的面积比为95％以上，在板厚中心部分为范围 从钢板表面的⅝至⅜的厚度，{100} <011>至{223} <110>取向基团的极点密度的平均值为4.0以下，极点密度为{ 332} <113>晶体取向为5.0以下，金属结构体的晶粒的平均体积直径为7μm以下。

公开(公告)号：US20140110022A1

公开(公告)日：2014-04-24

申请号：US14119124

申请日：2012-05-24

申请人： Kohichi Sano ,  Kunio Hayashi ,  Kazuaki Nakano ,  Riki Okamoto ,  Nobuhiro Fujita

发明人： Kohichi Sano ,  Kunio Hayashi ,  Kazuaki Nakano ,  Riki Okamoto ,  Nobuhiro Fujita

IPC分类号： C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/22 ,  C22C38/16 ,  C22C38/00 ,  C22C38/12 ,  C22C38/10 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D8/02 ,  C22C38/14

CPC分类号： C22C38/38 ,  C21D8/005 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0278 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/105 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  Y10T428/12799

摘要： A hot-rolled steel sheet satisfies that average pole density of orientation group of {100} to {223} is 1.0 to 5.0 and pole density of crystal orientation {332} is 1.0 to 4.0. Moreover, the hot-rolled steel sheet includes, as a metallographic structure, by area %, ferrite and bainite of 30% to 99% in total and martensite of 1% to 70%. Moreover, the hot-rolled steel sheet satisfies following Expressions 1 and 2 when area fraction of the martensite is defined as fM in unit of area %, average size of the martensite is defined as dia in unit of μm, average distance between the martensite is defined as dis in unit of μm, and tensile strength of the steel sheet is defined as TS in unit of MPa. dia≦13 μm  (Expression 1) TS/fM×dis/dia≧500  (Expression 2)

摘要翻译： 热轧钢板满足{100} <011>〜{223} <110>的取向基团的平均极密度为1.0〜5.0，晶体取向极性密度{332} <113>为1.0〜4.0。 另外，作为金相组织，热轧钢板的面积％为铁素体和贝氏体，总计为30〜99％，马氏体为1〜70％。 此外，当以马氏体单位面积％为单位将马氏体的面积率定义为fM时，热轧钢板满足以下表达式1和2：马氏体的平均尺寸为单位面积的直径，马氏体之间的平均距离为 定义为μm单位为μm，钢板的拉伸强度定义为TS，单位为MPa。 dia＆nlE;13μm（表达式1）TS / fM×dis /dia≥500（表达式2）

公开(公告)号：US08852360B2

公开(公告)日：2014-10-07

申请号：US13509946

申请日：2010-11-16

申请人： Hiroyuki Tanahashi ,  Shinya Saitoh ,  Masashi Fukuda ,  Hiroyuki Okada ,  Kunio Hayashi ,  Toshimasa Tomokiyo ,  Nobuhiro Fujita

发明人： Hiroyuki Tanahashi ,  Shinya Saitoh ,  Masashi Fukuda ,  Hiroyuki Okada ,  Kunio Hayashi ,  Toshimasa Tomokiyo ,  Nobuhiro Fujita

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C22C38/12 ,  C23C2/06 ,  C21D9/46 ,  C22C38/00 ,  C22C38/14

CPC分类号： C21D8/0263 ,  C21D9/46 ,  C21D2211/001 ,  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 ,  C23C2/06

摘要： This high strength hot-rolled steel sheet includes: in terms of percent by mass, C: 0.05 to 0.12%; Si: 0.8 to 1.2%; Mn: 1.6 to 2.2%; Al: 0.30 to 0.6%; P: 0.05% or less; S: 0.005% or less; and N: 0.01% or less, with the remainder being Fe and unavoidable impurities, wherein a microstructure includes specific ranges (in area %) of ferrite phases as well as martensite phases, and a maximum concentration of Al detected by a glow discharge emission spectroscopic analysis is in a range of 0.75 mass % or less in a region from a surface of the steel sheet to a thickness of 500 nm after being acid-pickled.

摘要翻译： 该高强度热轧钢板包括：以质量％计，C：0.05〜0.12％; Si：0.8〜1.2％ Mn：1.6〜2.2％ Al：0.30〜0.6％ P：0.05％以下; S：0.005％以下; 和N：0.01％以下，其余为Fe和不可避免的杂质，其中微结构包括铁素体相的特定范围（面积％）以及马氏体相，并且通过辉光放电发射光谱法检测到的Al的最大浓度 在酸洗后，从钢板表面到厚度为500nm的区域，分析为0.75质量％以下。

公开(公告)号：US09567658B2

公开(公告)日：2017-02-14

申请号：US14118968

申请日：2012-05-24

申请人： Yuri Toda ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kohichi Sano ,  Hiroshi Yoshida ,  Toshio Ogawa ,  Kunio Hayashi ,  Kazuaki Nakano

发明人： Yuri Toda ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kohichi Sano ,  Hiroshi Yoshida ,  Toshio Ogawa ,  Kunio Hayashi ,  Kazuaki Nakano

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C21D8/02 ,  C22C38/38 ,  C21D9/46 ,  C22C38/00 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/60 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32

CPC分类号： C22C38/38 ,  C21D8/005 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0278 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/105 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  Y10T428/12799

摘要： A cold-rolled steel sheet satisfies that an average pole density of an orientation group of {100} to {223} is 1.0 to 5.0, a pole density of a crystal orientation {332} is 1.0 to 4.0, a Lankford-value rC in a direction perpendicular to a rolling direction is 0.70 to 1.50, and a Lankford-value r30 in a direction making an angle of 30° with the rolling direction is 0.70 to 1.50. Moreover, the cold-rolled steel sheet includes, as a metallographic structure, by area %, a ferrite and a bainite of 30% to 99% in total and a martensite of 1% to 70%.

摘要翻译： 冷轧钢板满足{100} <011>〜{223} <110>的取向基团的平均极密度为1.0〜5.0，晶体取向{332} <113的极点密度为1.0 至4.0时，与轧制方向垂直的方向的兰克福特值rC为0.70〜1.50，轧制方向成为30°的方向的兰克福特值r30为0.70〜1.50。 另外，作为金相结构，冷轧钢板以面积％计，总计为30％〜99％的铁素体和贝氏体为1％〜70％的马氏体。

公开(公告)号：US20120279620A1

公开(公告)日：2012-11-08

申请号：US13509946

申请日：2010-11-16

申请人： Hiroyuki Tanahashi ,  Shinya Saitoh ,  Masashi Fukuda ,  Hiroyuki Okada ,  Kunio Hayashi ,  Toshimasa Tomokiyo ,  Nobuhiro Fujita

发明人： Hiroyuki Tanahashi ,  Shinya Saitoh ,  Masashi Fukuda ,  Hiroyuki Okada ,  Kunio Hayashi ,  Toshimasa Tomokiyo ,  Nobuhiro Fujita

IPC分类号： C21D8/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/18 ,  C22C38/14 ,  C22C38/12 ,  C22C38/02 ,  C22C38/16

CPC分类号： C21D8/0263 ,  C21D9/46 ,  C21D2211/001 ,  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 ,  C23C2/06

摘要： This high strength hot-rolled steel sheet includes: in terms of percent by mass, C: 0.05 to 0.12%; Si: 0.8 to 1.2%; Mn: 1.6 to 2.2%; Al: 0.30 to 0.6%; P: 0.05% or less; S: 0.005% or less; and N: 0.01% or less, with the remainder being Fe and unavoidable impurities, wherein a microstructure includes specific ranges (in area %) of ferrite phases as well as martensite phases, and a maximum concentration of Al detected by a glow discharge emission spectroscopic analysis is in a range of 0.75 mass % or less in a region from a surface of the steel sheet to a thickness of 500 nm after being acid-pickled.

摘要翻译： 该高强度热轧钢板包括：以质量％计，C：0.05〜0.12％; Si：0.8〜1.2％ Mn：1.6〜2.2％ Al：0.30〜0.6％ P：0.05％以下; S：0.005％以下; 和N：0.01％以下，其余为Fe和不可避免的杂质，其中微结构包括铁素体相的特定范围（面积％）以及马氏体相，并且通过辉光放电发射光谱法检测到的Al的最大浓度 在酸洗后，从钢板表面到厚度为500nm的区域，分析为0.75质量％以下。

公开(公告)号：US20090272467A1

公开(公告)日：2009-11-05

申请号：US12456120

申请日：2009-06-10

申请人： Nobuhiro Fujita ,  Masafumi Azuma ,  Manabu Takahashi ,  Yasuhide Morimoto ,  Masao Kurosaki ,  Akihiro Miyasaka

发明人： Nobuhiro Fujita ,  Masafumi Azuma ,  Manabu Takahashi ,  Yasuhide Morimoto ,  Masao Kurosaki ,  Akihiro Miyasaka

IPC分类号： C23C2/02 ,  C23C2/06

CPC分类号： C23C2/40 ,  C23C2/02 ,  C23C2/28 ,  Y10S428/939 ,  Y10T428/12799

摘要： The present invention provides: a high-strength high-ductility hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet having high fatigue resistance and corrosion resistance; a high-strength hot-dip galvanized steel sheet excellent in ductility, which improves non-plating defects and plating adhesion after severe deformation, and a method of producing the same; a high-strength and high-ductility hot-dip galvanized steel sheet having high fatigue resistance and corrosion resistance; a high-strength hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet having superior appearance and workability, which suppresses the generation of non-plating defects, and a method of producing the same; and a high-strength hot-dip galvannealed steel sheet and a high-strength hot-dip galvanized steel sheet, which suppress non-plating defects and surface defects and have both corrosion resistance, in particular corrosion resistance in an environment containing chlorine ion, and high ductility, and a method of producing the same.

摘要翻译： 本发明提供：具有高耐疲劳性和耐腐蚀性的高强度高延展性热浸镀锌钢板和热浸镀锌钢板; 延展性优异的高强度热浸镀锌钢板及其制造方法，其改善了非电镀缺陷和电镀附着力。 具有高耐疲劳性和耐腐蚀性的高强度和高延展性热浸镀锌钢板; 具有优异的外观和加工性的高强度热浸镀锌钢板和热浸镀锌钢板，其抑制非电镀缺陷的产生及其制造方法。 以及抑制非电镀缺陷和表面缺陷并且在含有氯离子的环境中具有耐腐蚀性，特别是耐腐蚀性的高强度热浸镀锌锌钢板和高强度热浸镀锌钢板，以及 高延展性及其制造方法。

公开(公告)号：US20080035247A1

公开(公告)日：2008-02-14

申请号：US11893935

申请日：2007-08-16

申请人： Nobuhiro Fujita ,  Masafumi Azuma ,  Manabu Takahashi ,  Yasuhide Morimoto ,  Masao Kurosaki ,  Akihiro Miyasaka

发明人： Nobuhiro Fujita ,  Masafumi Azuma ,  Manabu Takahashi ,  Yasuhide Morimoto ,  Masao Kurosaki ,  Akihiro Miyasaka

IPC分类号： C21D9/46 ,  B22D25/02 ,  C22C38/00

CPC分类号： C23C2/40 ,  C23C2/02 ,  C23C2/28 ,  Y10S428/939 ,  Y10T428/12799

摘要： The present invention provides: a high-strength high-ductility hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet having high fatigue resistance and corrosion resistance; a high-strength hot-dip galvanized steel sheet excellent in ductility, which improves non-plating defects and plating adhesion after severe deformation, and a method of producing the same; a high-strength and high-ductility hot-dip galvanized steel sheet having high fatigue resistance and corrosion resistance; a high-strength hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet having superior appearance and workability, which suppresses the generation of non-plating defects, and a method of producing the same; and a high-strength hot-dip galvannealed steel sheet and a high-strength hot-dip galvanized steel sheet, which suppress non-plating defects and surface defects and have both corrosion resistance, in particular corrosion resistance in an environment containing chlorine ion, and high ductility, and a method of producing the same.

摘要翻译： 本发明提供：具有高耐疲劳性和耐腐蚀性的高强度高延展性热浸镀锌钢板和热浸镀锌钢板; 延展性优异的高强度热浸镀锌钢板及其制造方法，其改善了非电镀缺陷和电镀附着力。 具有高耐疲劳性和耐腐蚀性的高强度和高延展性热浸镀锌钢板; 具有优异的外观和加工性的高强度热浸镀锌钢板和热浸镀锌钢板，其抑制非电镀缺陷的产生及其制造方法。 以及抑制非电镀缺陷和表面缺陷并且在含有氯离子的环境中具有耐腐蚀性，特别是耐腐蚀性的高强度热浸镀锌锌钢板和高强度热浸镀锌钢板，以及 高延展性及其制造方法。

公开(公告)号：US06632296B2

公开(公告)日：2003-10-14

申请号：US10049481

申请日：2002-02-06

申请人： Naoki Yoshinaga ,  Nobuhiro Fujita ,  Manabu Takahashi ,  Yasuhiro Shinohara ,  Tohru Yoshida ,  Natsuko Sugiura

发明人： Naoki Yoshinaga ,  Nobuhiro Fujita ,  Manabu Takahashi ,  Yasuhiro Shinohara ,  Tohru Yoshida ,  Natsuko Sugiura

IPC分类号： C22C3802

CPC分类号： C22C38/04 ,  C21D8/10 ,  C21D2201/00 ,  C21D2201/05 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/06 ,  Y10S148/909

摘要： The present invention provides a steel pipe excellent in formability during hydraulic forming and the like and a method to produce the same, and more specifically: a steel pipe excellent in formability having an r-value of 1.4 or larger in the axial direction of the steel pipe, and the property that the average of the ratios of the X-ray intensity in the orientation component group of {110} to {332} on the plane at the center of the steel pipe wall thickness to the random X-ray intensity is 3.5 or larger, and/or the ratio of the X-ray intensity in the orientation component of {110} on the plane at the center of the steel pipe wall thickness to the random X-ray intensity is 5.0 or larger; and a method to produce a steel pipe excellent in formability characterized by heating the steel pipe having the property that the ratio of the X-ray intensity in every one of the orientation components of {001} , {116} , {114} and {112} on the plane at the center of the mother pipe wall thickness to the random X-ray intensity is 3 or smaller to a temperature in the range from 650 to 1,200° C. and by applying working under a condition of a diameter reduction ratio of 30% or more and a wall thickness reduction ratio of 5 to 30%.

摘要翻译： 本发明提供一种在液压成形等中成形性优异的钢管及其制造方法，更具体地说，在钢的轴向上具有r值为1.4以上的成形性优异的钢管 管子，以及在钢管壁厚度的中心的平面上{110} <110> <{115} <110>的取向成分组中的X射线强度的比率的平均值相对于 随机X射线强度为3.5以上，和/或在钢管壁厚中心的平面上{110} <110>的取向成分中的X射线强度与随机X射线 强度为5.0以上; 以及生产成型性优良的钢管的制造方法，其特征在于，加热具有{001} <110>，{116} <110>的各取向成分的X射线强度的比例的钢管， 在母管壁厚度中心的平面上的随机X射线强度的{114} <110>和{112} <110>为650以上1200℃以下的温度。 并且通过在直径减小率为30％以上，壁厚减少率为5〜30％的条件下进行加工。

公开(公告)号：US07534312B2

公开(公告)日：2009-05-19

申请号：US10487797

申请日：2002-06-27

申请人： Naoki Yoshinaga ,  Nobuhiro Fujita ,  Manabu Takahashi ,  Koji Hashimoto ,  Shinya Sakamoto ,  Kaoru Kawasaki ,  Yasuhiro Shinohara ,  Takehide Senuma

发明人： Naoki Yoshinaga ,  Nobuhiro Fujita ,  Manabu Takahashi ,  Koji Hashimoto ,  Shinya Sakamoto ,  Kaoru Kawasaki ,  Yasuhiro Shinohara ,  Takehide Senuma

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/04 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C25D5/34

摘要： The present invention provides a steel sheet excellent in workability, which may be used for components of an automobile or the like, and a method for producing the same. More specifically, according to one exemplary embodiment of the present invention, a steel sheet excellent in workability, including in mass, 0.08 to 0.25% C, 0.001 to 1.5% Si, 0.01 to 2.0% Mn, 0.001 to 0.06% P, at most 0.05% S, 0.001 to 0.007% N, 0.008 to 0.2% Al, at least 0.01% Fe. The steel sheet having an average r-value of at least 1.2, an r-value in the rolling direction of at least 1.3, an r-value in the direction of 45 degrees to the rolling direction of at least 0.9, and an r-value in the direction of a right angle to the rolling direction of at least 1.2.

摘要翻译： 本发明提供可以用于汽车等的部件的加工性优异的钢板及其制造方法。 更具体地说，根据本发明的一个示例性实施方案，可加工性优异的钢板，包括：0.08〜0.25％的C，0.001〜1.5％的Si，0.01〜2.0％的Mn，0.001〜0.06％的P， 0.05％S，0.001至0.007％N，0.008至0.2％Al，至少0.01％Fe。 钢板的平均r值为1.2以上，轧制方向的r值为1.3以上，轧制方向为45度的r值为0.9以上，r- 在与滚动方向成直角的方向上的值至少为1.2。