公开(公告)号：US06478892B2

公开(公告)日：2002-11-12

申请号：US09827968

申请日：2001-04-06

申请人： Ken-ichi Murakami ,  Takashi Morohoshi ,  Tomoji Kumano ,  Ryutaro Kawamata ,  Takeshi Kubota ,  Masafumi Zeze ,  Hidekuni Murakami ,  Shinichi Kanao

发明人： Ken-ichi Murakami ,  Takashi Morohoshi ,  Tomoji Kumano ,  Ryutaro Kawamata ,  Takeshi Kubota ,  Masafumi Zeze ,  Hidekuni Murakami ,  Shinichi Kanao

IPC分类号： H01F104

CPC分类号： C21D8/12 ,  C21D8/1261 ,  C21D8/1272

摘要： The present invention provides a non-oriented electrical steel sheet having crystal grains of small diameter and excellent workability before stress relief annealing and having crystal grains of largely grown diameter and excellent iron loss property after stress relief annealing and a method for producing the same, and relates to a low iron loss non-oriented electrical steel sheet excellent in workability, containing, in weight %, 0.010% or less of C, 0.1 to 1.5% of Mn, 0.1 to 4% of Si, 0.1 to 4% of Al, wherein the latter three elements satisfy the formula Si+Mn+Al≦5.0%, and 0.0005 to 0.0200% of Mg, or further containing 0.005% or more of Ca, wherein the total amount of Mg and Ca is 0.0200% or less, or further containing 0.005% or more of REM, wherein the total amount of Mg and REM is 0.0200% or less, or further containing 0.005% or more of Ca and REM, wherein the total amount of Mg, Ca and REM is 0.0200% or less, and containing the remainder consisting of Fe and unavoidable impurities.

摘要翻译： 本发明提供一种在应力消除退火之前具有直径小的晶粒和可加工性优异的无取向电工钢板，其具有大直径生长的晶粒和应力消除退火后的优异的铁损性能及其制造方法， 涉及加工性优异的低铁损无取向电工钢板，其含量为C：0.010％以下，Mn：0.1〜1.5％，Si：0.1〜4％，Al：0.1〜4％ 其中后三种元素满足式Si + Mn + Al <= 5.0％，Mg：0.0005〜0.0200％，进一步含有0.005％以上的Ca，其中Mg和Ca的总量为0.0200％以下， 或进一步含有0.005％以上的REM，其中Mg和REM的总量为0.0200％以下，或进一步含有0.005％以上的Ca和REM，其中Mg，Ca和REM的总量为0.0200％，或 较少，含有余量由Fe和不可避免的impuriti组成 es。