公开(公告)号：EP2692893A4

公开(公告)日：2014-12-10

申请号：EP12762991

申请日：2012-03-28

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： NOZAKI TAKAYUKI ,  TAKAHASHI MANABU ,  FUJITA NOBUHIRO ,  YOSHIDA HIROSHI ,  WATANABE SHINICHIRO ,  YAMAMOTO TAKESHI ,  WAKABAYASHI CHISATO ,  OKAMOTO RIKI ,  SANO KOHICHI

IPC分类号： C22C38/06 ,  B32B15/01 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  C22C38/58 ,  C22C38/60

CPC分类号： C22C38/26 ,  B32B15/013 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/0463 ,  C21D9/46 ,  C21D2201/05 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

摘要： This is a cold-rolled steel sheet includes, by mass%, C: 0.02% to 0.4%, Si: 0.001% to 2.5%, Mn: 0.001% to 4.0%, and Al: 0.001% to 2.0%. The sum of the Si content and the Al content is 1.0% to 4.5%. An average pole density of an orientation group from {100} to {223} is 1.0 to 6.5, and a pole density of a crystal orientation {332} is 1.0 to 5.0. A microstructure includes, by an area ratio%, 5% to 80% of ferrite, 5% to 80% of bainite, and 2% to 30% of retained austenite. In the microstructure, by an area ratio%, martensite is limited to 20% or less, pearlite is limited to 10% or less, and tempered martensite is limited to 60% or less.

公开(公告)号：EP2500445A4

公开(公告)日：2017-05-17

申请号：EP10828402

申请日：2010-11-09

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： OGAWA TOSHIO ,  MATSUTANI NAOKI ,  GOTO KOICHI ,  WATANABE SHINICHIRO ,  FUJITA NOBUHIRO ,  NONAKA TOSHIKI

IPC分类号： C22C38/00 ,  B32B15/01 ,  C21D8/04 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/40 ,  C23C2/02 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28

CPC分类号： C23C2/02 ,  B32B15/012 ,  B32B15/013 ,  C21D8/0426 ,  C21D8/0431 ,  C21D8/0436 ,  C21D8/0463 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/40 ,  C23C2/26 ,  C23C2/28 ,  Y10T428/12799

公开(公告)号：EP2738274A4

公开(公告)日：2015-10-28

申请号：EP12817554

申请日：2012-07-27

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： SHUTO HIROSHI ,  FUJITA NOBUHIRO ,  YOKOI TATSUO ,  OKAMOTO RIKI ,  NAKANO KAZUAKI ,  WATANABE SHINICHIRO

IPC分类号： C22C38/00 ,  B21B1/26 ,  B21B3/00 ,  C21D8/04 ,  C21D9/48 ,  C22C38/06 ,  C22C38/60

CPC分类号： C22C38/38 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0473 ,  C21D2201/05 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  Y10T428/12799

摘要： A high-strength cold-rolled steel sheet having excellent stretch flangeability and precision punchability containing predetermined components and a balance being composed of iron and inevitable impurities, in which in a range of 5/8 to 3/8 in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100} to {223} orientation group represented by respective crystal orientations of {100} , {116} , {114} , {113} , {112} , {335} , and {223} is 6.5 or less, and a pole density of the {332} crystal orientation is 5.0 or less, and a metal structure contains, in terms of an area ratio, greater than 5% of pearlite, the sum of bainite and martensite limited to less than 5%, and a balance composed of ferrite.

公开(公告)号：EP2692895A4

公开(公告)日：2014-12-03

申请号：EP12763971

申请日：2012-03-28

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： NOZAKI TAKAYUKI ,  TAKAHASHI MANABU ,  FUJITA NOBUHIRO ,  YOSHIDA HIROSHI ,  WATANABE SHINICHIRO ,  YAMAMOTO TAKESHI

IPC分类号： C22C38/06 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  C22C38/58

CPC分类号： C22C38/26 ,  B32B15/013 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/0463 ,  C21D9/46 ,  C21D2201/05 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

摘要： This is a cold-rolled steel sheet includes, by mass%, C: 0.02% to 0.4%, Si: 0.001% to 2.5%, Mn: 0.001% to 4.0%, and Al: 0.001% to 2.0%. The sum of the Si content and the Al content is 1.0% to 4.5%. An average pole density of an orientation group from {100} to {223} is 1.0 to 6.5, and a pole density of a crystal orientation {332} is 1.0 to 5.0. A microstructure includes, by an area ratio%, 5% to 80% of ferrite, 5% to 80% of bainite, and 2% to 30% of retained austenite. In the microstructure, by an area ratio%, martensite is limited to 20% or less, pearlite is limited to 10% or less, and tempered martensite is limited to 60% or less.

摘要翻译： 这是以质量％计含有C：0.02〜0.4％，Si：0.001〜2.5％，Mn：0.001〜4.0％，Al：0.001〜2.0％的冷轧钢板。 Si含量和Al含量之和为1.0％〜4.5％。 {100} <011>至{223} <110>的取向基的平均极密度为1.0〜6.5，晶体取向{332} <113>的极点密度为1.0〜5.0。 微观结构包括以5％至80％的铁素体，5％至80％的贝氏体和2％至30％的残余奥氏体的面积比率％。 在微细结构中，通过面积率％将马氏体限制在20％以下，珠光体被限制在10％以下，回火马氏体限制在60％以下。