摘要:
A nonoriented electrical steel sheet excellent in core loss comprising copper sulfides with a sphere-equivalent radius of 100 nm or less, wherein the number density of the copper sulfides is less than 1×1010 [inclusions/mm3]. Preferably, the percentage of the number of copper sulfides with a (major axis)/(minor axis) ratio of more than 2 per total number of copper sulfides is 30% or less. The steel preferably further comprises Cu of 0.5 mass % or less and REM of 0.0005% or more and 0.03% or less, wherein the following expression (1) or expressions (1) and (2) are met: [REM]×[Cu]3≧7.5×10−11 (1), ([REM]−0.003)0.1×[Cu]2≦1.25×10−4 (2).
摘要翻译:核心损失优异的非取向电工钢板,其包含球半径为100nm以下的硫化铜,其中硫化铜的数量密度小于1×10 10 [夹杂物/ mm 3]。 优选地,每个硫化铜总数的(长轴)/(短轴)比大于2的硫化铜的数量的百分比为30%以下。 钢优选还含有0.5质量%以下的Cu和0.0005%以上且0.03%以下的REM,其中满足以下表达式(1)或表达式(1)和(2):[REM] x [Cu ] 3> = 7.5×10-11(1),([REM] -0.003)0.1x [Cu] 2 <= 1.25×10-4(2)。
摘要:
A nonoriented electrical steel sheet excellent in core loss comprising copper sulfides with a sphere-equivalent radius of 100 nm or less, wherein the number density of the copper sulfides is less than 1×1010 [inclusions/mm3]. Preferably, the percentage of the number of copper sulfides with a (major axis)/(minor axis) ratio of more than 2 per total number of copper sulfides is 30% or less. The steel preferably further comprises Cu of 0.5 mass % or less and REM of 0.0005% or more and 0.03% or less, wherein the following expression (1) or expressions (1) and (2) are met: [REM]×[Cu]3≧7.5×10−11, (1) ([REM]−0.003)0.1×[Cu]2≦1.25×10−4. (2)
摘要:
Non-oriented electrical steel sheet superior in core loss characterized by containing, by mass %, C: 0.01% or less, Si: 0.1% to 7.0%, Al: 0.1% to 3.0%, Mn: 0.1% to 2.0%, N: 0.005% or less, Ti: 0.02% or less, REM: 0.05% or less, S: 0.005% or less, O: 0.005% or less, and a balance of iron and unavoidable impurities and having a mass % of S shown by [S], a mass % of O shown by [O], a mass % of REM shown by [REM], a mass % of Ti shown by [Ti], and a mass % of N shown by [N] satisfying [Formula 1] and [Formula 2]: [REM]2×[O]2×[S]≧1×10−15 [Formula 1] ([REM]2×[O]2×[S])÷([Ti]×[N])≧1×10−10 [Formula 2].
摘要:
A rapidly-solidified non-oriented electrical steel sheet having high magnetic flux density and low core loss is provided.The method of producing the non-oriented electrical steel sheet excellent in magnetic properties comprises casting a steel strip by using a traveling cooling roll surface(s) to solidify a steel melt of a prescribed chemical composition, which melt contains one or both of REM and Ca at a total content of 0.0020 to 0.01% and is cast in an atmosphere of Ar, He or a mixture thereof.
摘要:
A non-oriented electrical steel sheet is characterized in that the number density of inclusions with an equivalent volume diameter of less than 100 nm contained in the steel sheet is 1×1010 [/mm3] or less, and that the steel sheet contains, by mass %, C: up to 0.01%, Si: 0.1% to 7.0%. Al: 0.1% to 3.0%. Mn: 0.1% to 2.0%, REM: 0.0003% to 0.05%. Ti: up to 0.02%. S: up to 0.005%. and N: up to 0.005%. the balance Fe and inevitable impurities and the mass % of Al represented by [Al] and the mass % of Ti represented by [Ti] satisfy the equation log([Ti]×[N])−1.19×log([Al]×[N])+1.84>0 . . . (1).
摘要翻译:无取向电工钢板的特征在于,钢板中所含的等体积直径小于100nm的夹杂物的数密度为1×10 10 [/ mm 3]以下,钢板以质量%计, ,C:0.01%以下,Si:0.1〜7.0%。 Al:0.1〜3.0%。 Mn:0.1〜2.0%,REM:0.0003〜0.05%。 Ti:最高0.02%。 S:高达0.005%。 和N:高达0.005%。 由[Al]表示的Fe和不可避免的杂质和Al的质量%以及由[Ti]表示的Ti的质量%满足等式log([Ti] x [N]) - 1.19xlog([Al] x [ N])+ 1.84> 0。 。 。 (1)。
摘要:
In a non-oriented electrical steel sheet, Si: not less than 1.0 mass % nor more than 3.5 mass %, Al: not less than 0.1 mass % nor more than 3.0 mass %, Ti: not less than 0.001 mass % nor more than 0.01 mass %, Bi: not less than 0.001 mass % nor more than 0.01 mass %, and so on are contained. (1) expression described below is satisfied when a Ti content (mass %) is represented as [Ti] and a Bi content (mass %) is represented as [Bi]. [Ti]≦0.8×[Bi]+0.002 (1)
摘要:
In a non-oriented electrical steel sheet, Si: not less than 1.0 mass % nor more than 3.5 mass %, Al: not less than 0.1 mass % nor more than 3.0 mass %, Ti: not less than 0.001 mass % nor more than 0.01 mass %, Bi: not less than 0.001 mass % nor more than 0.01 mass %, and so on are contained. (1) expression described below is satisfied when a Ti content (mass %) is represented as [Ti] and a Bi content (mass %) is represented as [Bi]. [Ti]≦0.8×[Bi]+0.002 (1)
摘要:
A rapidly-solidified non-oriented electrical steel sheet having high magnetic flux density and low core loss is provided.The method of producing the non-oriented electrical steel sheet excellent in magnetic properties comprises casting a steel strip by using a traveling cooling roll surface(s) to solidify a steel melt of a prescribed chemical composition, which melt contains one or both of REM and Ca at a total content of 0.0020 to 0.01% and is cast in an atmosphere of Ar, He or a mixture thereof.
摘要:
Non-oriented electrical steel sheet superior in core loss characterized by containing, by mass %, C: 0.01% or less, Si: 0.1% to 7.0%, Al: 0.1% to 3.0%, Mn: 0.1% to 2.0%, N: 0.005% or less, Ti: 0.02% or less, REM: 0.05% or less, S: 0.005% or less, O: 0.005% or less, and a balance of iron and unavoidable impurities and having a mass % of S shown by [S], a mass % of O shown by [O], a mass % of REM shown by [REM], a mass % of Ti shown by [Ti], and a mass % of N shown by [N] satisfying [Formula 1] and [Formula 2]: [REM]2×[O]2×[S]≧1×10−15[Formula 1] ([REM]2×[O]2×[S])÷([Ti]×[N])≧1×10−10[Formula 2]
摘要:
A non-oriented electrical steel sheet is characterized in that the number density of inclusions with an equivalent volume diameter of less than 100 nm contained in the steel sheet is 1×1010 [/mm3] or less, and that the steel sheet contains, by mass%, C: up to 0.01%, Si: 0.1% to 7.0%, Al: 0.1% to 3.0%, Mn: 0.1% to 2.0%, REM: 0.0003% to 0.05%, Ti: up to 0.02%, S: up to 0.005%, and N: up to 0.005%, the balance Fe and inevitable impurities and the mass % of Al represented by [All and the mass % of Ti represented by [Ti] satisfy the equation loq([Ti]×[N])−1.19×loq([Al]×[N])+1.84>0 . . . (1).
摘要翻译:无取向电工钢板的特征在于,钢板中所含的等体积直径小于100nm的夹杂物的数量密度为1×10 6 [/ mm 3 / SUP>]以下,钢板以质量%计含有C:0.01%以下,Si:0.1〜7.0%,Al:0.1〜3.0%,Mn:0.1〜2.0%,REM: 0.0003%〜0.05%,Ti:0.02%以下,S:0.005%以下,N:0.005%以下,余量为Fe和不可避免的杂质,Al的质量%为[全部和质量%Ti 由[Ti]表示,满足方程式loq([Ti] x [N]) - 1.19xloq([Al] x [N])+ 1.84> 0。 。 。 (1)。