Process for producing a non-oriented electromagnetic steel sheet having
excellent magnetic properties
    1.
    发明授权
    Process for producing a non-oriented electromagnetic steel sheet having excellent magnetic properties 失效
    制造磁特性优异的无取向电磁钢板的制造方法

    公开(公告)号:US4560423A

    公开(公告)日:1985-12-24

    申请号:US486949

    申请日:1983-03-15

    CPC分类号: H01F1/16 C21D8/1272

    摘要: The present invention relates to a process for producing a non-oriented silicon steel sheet having a low watt loss and an improved magnetic flux density. Generally, increasing the content of silicon and aluminum in a steel reduces the watt loss of the final product but deteriorates the magnetic flux density. Also, increasing the finishing temperature of a steel sheet or to increase the size of the crystal grains of the final product reduces the watt loss of the final product but also decreases the magnetic flux density.In accordance with the present invention, a grade S7 or grade S8 non-oriented electromagnetic steel sheet exhibiting such excellent magnetic properties at a high magnetic field that the magnetic flux density B.sub.50 is 1.67 tesla or more, the watt loss W.sub.15/50 is 2.70 W/kg or less (0.50 mm thick), and the watt loss W.sub.15/50 is 2.20 W/kg or less (0.35 mm thick) is produced by subjecting a high aluminum electromagnetic steel containing not less than 2.5% silicon and not less than 1.0% aluminum to cold-rolling at a high reduction ratio before finishing-annealing and by subjecting the cold-rolled steel sheet or strip to finishing-annealing at a high temperature of 1050.degree. C. or more for a very short period of from 3 to less than 60 seconds.

    摘要翻译: PCT No.PCT / JP81 / 00202 Sec。 371日期1983年3月15日 102(e)1983年3月15日PCT申请1981年8月28日PCT公布。 公开号WO83 / 00506 日本1983年2月17日。本发明涉及一种具有低瓦特损耗和改善的磁通密度的无取向硅钢板的制造方法。 通常,增加钢中的硅和铝的含量降低了最终产品的瓦特损耗,但是磁通密度降低。 此外,提高钢板的最终温度或增加最终产品的晶粒的尺寸降低了最终产品的瓦特损耗,而且降低了磁通密度。 根据本发明,在磁通密度B50为1.67特斯拉以上的高磁场下显示出优异的磁特性的S7级或S8级无电磁钢板,瓦特损耗W15 / 50为2.70W / kg以下(0.50mm厚),瓦数W15 / 50为2.20W / kg以下(0.35mm厚),通过对含有2.5%以上的硅且不小于1.0的高铝电磁钢进行制造 %的铝以高精度退火前的高还原率进行冷轧,并且在1050℃以上的高温下将冷轧钢板或钢带进行最终退火3〜 少于60秒。

    Non-oriented electrical steel sheet having a low watt loss and a high
magnetic flux density and a process for producing the same
    2.
    发明授权
    Non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density and a process for producing the same 失效
    具有低瓦特损耗和高磁通密度的无方向性电磁钢板及其制造方法

    公开(公告)号:US4661174A

    公开(公告)日:1987-04-28

    申请号:US614139

    申请日:1984-05-25

    摘要: In the production of non-oriented electrical steel sheets, it has been attempted to decrease the watt loss, e.g., by adding Sn to silicon steels, but in such a case the relationship between the watt loss and the magnetic flux density falls within the curves 1 and 1' in FIG. 1. The addition of boron is therefore unsatisfactory for meeting the recent demand for improving the magnetic properties of a non-oriented electrical steel sheet over those indicated by the curve 3.In the present invention, the combined addition of Sn and B and/or sol. Al results in the development of (110) and (100) textures, which are desirable for the magnetic properties.A non-oriented electrical steel sheet according to the present invention consists of:at most 0.015% carbon,0.3% to 2.0% silicon,0.02% to 0.20% tin,and optionally1.0% to 1.5% manganese,and(a) 0.005% to 0.10% acid-soluble aluminium,at most 0.007% nitrogen,at most 0.005% boron,the weight ratio of the boron content/nitrogen content being from 0.5 to 1.5balance iron and unavoidable impurities, or when manganese is present in said steel either,(b) 0.1% to 0.2% acid-soluble aluminium balance iron and unavoidable impurities, or (a).

    摘要翻译: 在无方向性电工钢板的制造中,例如通过向硅钢中添加Sn而尝试降低瓦特损耗,但是在这种情况下,瓦特损耗与磁通密度之间的关系落在曲线 1和1'。 因此,加入硼对于满足最近对改进非取向电工钢板的磁性能的要求超过曲线3所示的要求是不能令人满意的。在本发明中,Sn和B的组合添加和/或 溶胶 Al导致(110)和(100)纹理的发展,这对于磁性能是期望的。 本发明的无取向电工钢板由以下各项组成:碳量最多为0.015%,硅为0.3〜2.0%,锡为0.02〜0.20%,锰为0.1〜1.5%,(a)0.005% 至0.10%的酸溶性铝,至多0.007%的氮,至多0.005%的硼,硼含量/氮含量的重量比为0.5至1.5,余量为铁和不可避免的杂质,或当锰存在于所述钢中时 ,(b)0.1%至0.2%的酸可溶性铝平衡铁和不可避免的杂质,或(a)。

    Method for manufacturing non-oriented electrical steel sheet and strip
having no ridging
    3.
    发明授权
    Method for manufacturing non-oriented electrical steel sheet and strip having no ridging 失效
    制造无方向性电磁钢板和无凸条的钢带的制造方法

    公开(公告)号:US3935038A

    公开(公告)日:1976-01-27

    申请号:US529099

    申请日:1974-12-03

    摘要: A method for manufacturing non-oriented electrical steel sheet and strip having no ridging characterized in that, non-oriented electrical steel sheet and strip is manufactured by casting molten silicon steel into a slab, hot-rolling, cold-rolling and annealing, said molten silicon steel, being controlled so as to give a composition, at the time of hot-rolling, comprising C 2.0% and also C .gtoreq. 1/100 [(Si + Al) - 0.75]% with the remainder being iron and unavoidable impurities.

    摘要翻译: 制造无方向性电磁钢板和无凸条的钢带的方法,其特征在于,通过将熔融硅钢浇铸成板坯,热轧,冷轧和退火来制造无取向电工钢板和钢带,所述熔融 硅钢,在热轧时得到组成,其含有C <0.06%,Si 1.5-4.0%和Al <1.0%,Si + Al> 2.0%,C> / = 1/100 [(Si + Al)-0.75]%,其余为铁和不可避免的杂质。

    Process for producing a semi-processed non-oriented electrical steel
sheet having a low watt loss and a high magnetic flux density
    5.
    发明授权
    Process for producing a semi-processed non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density 失效
    具有低瓦特损耗和高磁通密度的半加工无取向电工钢板的制造方法

    公开(公告)号:US4851056A

    公开(公告)日:1989-07-25

    申请号:US55297

    申请日:1987-05-29

    IPC分类号: C21D8/12 H01F1/16

    摘要: In a conventional process for producing a semi-processed non-oriented electrical steel sheet, the silicon or aluminum content of a hot-rolled steel strip is high, especially in the case of producing a high-grade electrical sheet which has a low watt loss. However, a high silicon or aluminum content disadvantageously results in a decrease in the magnetic flux density.A decrease in the watt loss and an increase in the magnetic flux density in semi-processed non-oriented electrical steel sheets as compared with conventional high-grade semi-processed non-oriented electrical steel sheets can be achieved by making the silicon content, which increases resistivity, low, i.e. from 0.1 to 1.0%, and the manganese content, which is effective for improving the texture, high i.e. from 0.75 to 1.5% and by subjecting the starting material, having a low silicon content, and a high manganese content to an appropriate production process for controlling texture.

    摘要翻译: 在常规的半成品无方向性电工钢板的制造方法中,热轧钢带的硅或铝的含量高,特别是在制造低瓦数损失的高档电工板的情况下 。 然而,高硅或铝含量不利地导致磁通密度的降低。 与常规高级半成品无方向性电磁钢板相比,半成品无方向性电工钢板的瓦特损耗的减小和磁通密度的增加可以通过使硅含量 提高电阻率,低,即为0.1〜1.0%,锰含量有利于提高织构,即从0.75%提高到1.5%,通过使具有低硅含量的原料和高锰含量 适用于控制纹理的生产过程。

    Non-oriented electrical steel sheet having a low watt loss and a high
magnetic flux density and a process for producing the same

    公开(公告)号:US4666534A

    公开(公告)日:1987-05-19

    申请号:US772464

    申请日:1985-09-04

    摘要: In the production of non-oriented electrical steel sheets, it has been attempted to decrease the watt loss, e.g., by adding Sn to silicon steels, but in such a case the relationship between the watt loss and the magnetic flux density falls within the curves 1 and 1' in FIG. 1. The addition of boron is therefore unsatisfactory for meeting the recent demand for improving the magnetic properties of a non-oriented electrical steel sheet over those indicated by the curve 3.In the present invention, the combined addition of Sn and B and/or sol. Al results in the development of (110) and (100) textures, which are desirable for the magnetic properties.A non-oriented electrical steel sheet according to the present invention consists of:at most 0.015% carbon,0.3% to 2.0% silicon,0.02% to 0.20% tin,and optionally1.0% to 1.5% manganese,and(a) 0.005% to 0.10% acid-soluble aluminium,at most 0.007% nitrogen,at most 0.005% boron,the weight ratio of the boron content/nitrogen content being from 0.5 to 1.5balance iron and unavoidable impurities, or when manganese is present in said steel either,(b) 0.1% to 0.2% acid-soluble aluminium balance iron and unavoidable impurities, or (a).