公开(公告)号：US08557058B2

公开(公告)日：2013-10-15

申请号：US12309622

申请日：2007-06-15

申请人： Yoshihiro Arita ,  Hidekuni Murakami ,  Yutaka Matsumoto ,  Saori Haranaka ,  Takeshi Kubota

发明人： Yoshihiro Arita ,  Hidekuni Murakami ,  Yutaka Matsumoto ,  Saori Haranaka ,  Takeshi Kubota

IPC分类号： H01F3/00 ,  H01F1/04 ,  C22C38/00

CPC分类号： C22C38/02 ,  C21D8/12 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  H01F1/14716 ,  H01F1/14791

摘要： The invention provides a non-oriented electrical steel sheet excellent in yield strength for use as an iron core material for high rpm motors that does not sacrifice yield or productivity in motor core punching or steel sheet production, which non-oriented electrical steel sheet is given a chemical composition of, in mass %, C: 0.01 to 0.05%, Si: 2.0 to 4.0%, Mn: 0.05 to 0.5%, Al: 3.0% or less and Nb: 0.01 to 0.05%, and optionally Ni at a preferable content of more than 0.5% and less than 3.0%, the balance being Fe and unavoidable impurities, Mn and C contents expressed in mass % are made to satisfy Mn≦0.6-10×C, recrystallized portion area fraction is made 50% or greater, yield strength in tensile testing is made 650 MPa or greater, and average-grain diameter viewed in steel sheet cross-section is made 40 μm or less, and electrical steel sheet production is conducted using a hot-rolled sheet whose transition temperature in impact testing is 70° C. or less.

摘要翻译： 本发明提供一种用于高转速电机的铁心材料的屈服强度优异的无取向电工钢板，其不牺牲电动机芯冲孔或钢板生产中的产量或生产率，该方向电磁钢板被给予 以质量％计含有C：0.01〜0.05％，Si：2.0〜4.0％，Mn：0.05〜0.5％，Al：3.0％以下，Nb：0.01〜0.05％的化学成分， 含量超过0.5％且小于3.0％，余量为Fe和不可避免的杂质，以质量％表示的Mn和C含量满足Mn≤0.0〜10-10℃，再结晶部分面积分数为50％以上 拉伸试验的屈服强度为650MPa以上，钢板截面的平均粒径为40μm以下，使用冲击转变温度的热轧板进行电工钢板的制造 测试为70℃或更低。

公开(公告)号：US20090301609A1

公开(公告)日：2009-12-10

申请号：US12309622

申请日：2007-06-15

申请人： Yoshihiro Arita ,  Hidekuni Murakami ,  Yutaka Matsumoto ,  Saori Haranaka ,  Takeshi Kubota

发明人： Yoshihiro Arita ,  Hidekuni Murakami ,  Yutaka Matsumoto ,  Saori Haranaka ,  Takeshi Kubota

IPC分类号： C22C38/02

CPC分类号： C22C38/02 ,  C21D8/12 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  H01F1/14716 ,  H01F1/14791

摘要： The invention provides a non-oriented electrical steel sheet excellent in yield strength for use as an iron core material for high rpm motors that does not sacrifice yield or productivity in motor core punching or steel sheet production, which non-oriented electrical steel sheet is given a chemical composition of, in mass %, C: 0.01 to 0.05%, Si: 2.0 to 4.0%, Mn: 0.05 to 0.5%, Al: 3.0% or less and Nb: 0.01 to 0.05%, and optionally Ni at a preferable content of more than 0.5% and less than 3.0%, the balance being Fe and unavoidable impurities, Mn and C contents expressed in mass % are made to satisfy Mn≦0.6−10×C, recrystallized portion area fraction is made 50% or greater, yield strength in tensile testing is made 650 MPa or greater, and average-grain diameter viewed in steel sheet cross-section is made 40 μm or less, and electrical steel sheet production is conducted using a hot-rolled sheet whose transition temperature in impact testing is 70° C. or less.

摘要翻译： 本发明提供一种用于高转速电机的铁心材料的屈服强度优异的无取向电工钢板，其不牺牲电动机芯冲孔或钢板生产中的产量或生产率，该方向电磁钢板被给予 以质量％计含有C：0.01〜0.05％，Si：2.0〜4.0％，Mn：0.05〜0.5％，Al：3.0％以下，Nb：0.01〜0.05％的化学成分， 含量超过0.5％且小于3.0％，余量为Fe和不可避免的杂质，以质量％表示的Mn和C含量满足Mn <= 0.6-10×C，再结晶部分面积分数为50％以上， 拉伸试验的屈服强度为650MPa以上，钢板截面的平均粒径为40μm以下，利用冲击试验中的转变温度的热轧板进行电工钢板的制造 为70℃以下。