• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A hot rolled band suitable for processing into cube-on-edge oriented silicon steel having a permeability of at least 1870 (G/Oe) at 10 oersteds and a core loss of no more than 0.700 watts per pound at 17 kilogauss; and processing for the steel from which the band is made. The hot rolled band has a thickness of from about 0.050 to about 0.120 inch; and consists essentially of, by weight, 0.02 to 0.06% carbon, 0.015 to 0.15% manganese, 0.01 to 0.05% of material from the group consisting of sulfur and selenium; 0.0006 to 0.0080% boron, up to 0.0100% nitrogen, 2.5 to 4.0% silicon, between 0.3 and 1.0% copper, no more than 0.008% aluminum, balance iron. Processing includes the steps of cold rolling the steel band to a thickness no greater than 0.020 inch without an intermediate anneal between cold rolling passes; preparing several coils from the steel; decarburizing the steel and final texture annealing the steel. Essential to the invention is the inclusion of a controlled amount of copper in the melt.
    公开号:SU1075985A3
    申请号:SU772493668
    申请日:1977-06-16
    公开日:1984-02-23
    发明作者:Анджело Малагари Фрэнк (Младший)
    申请人:Аллегени Ладлам Индастриз,Инк (Фирма)；
    IPC主号:
    专利说明:

    ABOUT

    SP
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    00 SP
    The invention relates to metallurgy, in particular to the search for methods for manufacturing grain-oriented silicon electromagnetic steels, and can be used in coils having a magnetic permeability of not less than 1870 G / E at 10 O and a core loss not exceeding 1,540 V / kg at 17 .KGS.
    Known electromagnetic silicon steel of the following chemical composition, wt.%:
    Carbon0.02-0.07
    Manganese 0.05-0.24 Silicon2.5-3.5
    Aluminum 0.015-0.4 Nitrogen0.003-0.009
    Copper 0.1-0.3,
    IronErest
    Steel as impurities contains sulfur and phosphorus Cl J.
    Closest to the proposed technical essence and the achieved result is a method of manufacturing electromagnetic silicon steel., Including obtaining a melt containing, wt.%: Carbon to 0.07; manganese 0.03-0.24; silicon 2,6-4,0; sulfur 0.01-0.07; aluminum 0.015-0.04; az to 0.02; copper O, 1-0.5 iron else, casting, hot rolling, annealing, cold rolling in one step with a degree of reduction /, decarburizing and final texturing annealing C2J. The disadvantage of this method is the non-uniformity of the magnetic properties of the coils made from steel indicated composition. Coils, obtained from the well-known component content, May.%
    They have a magnetic permeability of at least 1870 Gs / E at 10 Oe and a core loss of not more than 1.541 W / kg at 17 kgf. However, less than 25% of the coils have non-uniform magnetic properties.
    The aim of the invention is to improve the uniformity of the magnetic properties of the coils.
    This goal is achieved in that according to the method of manufacturing electromagnetic silicon steel, including the preparation of a melt containing carbon, manganese, silicon, sulfur, aluminum, nitrogen, copper and iron, casting, hot rolling, cold rolling in one step to a thickness of 0.5 mm decarburization and recrystallization annealing, boron is additionally introduced into the melt in the following ratio of melt components, wt. Carbon 0., 031-0.033 Manganese 0.04-0.041 Silicon3.13-3.14
    Sulfur0.02-0.021
    Aluminum 0.003-0.004 Nitrogen0.0046
    Copper0.38-0.5
    Bor0.0013-0.014
    IronErest
    and hot rolling is carried out to a thickness of 1.27-3.05 mm.
    After hot rolling, coils are made, normalization of the passages is at v949 ° C, decarburization is at -0 802s, and final annealing is at 111177 ° C in hydrogen.
    The chemical composition of the steel according to the invention is presented in table 1.
    Table 1
    0.041 0.0013 0.02 .0.031 3.13
    The processing of steel consists of thickness at elevated temperature: within a few hours, hot rolling to a thickness of 0.08 inches (about 2 mm), preparation of a coil, normalization of hot rolled strip at 1740 ° Р (1949 ° С), cold rolling to final thickness, decarburization at
     1475 ° F (lv02 ° C) and final texturing annealing at the maximum temperature of 2150 ° F: 1P7 ° C) in hydrogen. Then the thickness, magnetic permeability and losses in the:; core are measured.
    The properties of the coils manufactured by the proposed method are shown in table 2. 0.0046 0.50 0.004 - Table 2
    权利要求:
    Claims (1)
    [1]
    METHOD FOR PRODUCING ELECTROMAGNETIC SILICON STEEL, including the preparation of a melt containing carbon, manganese, silicon, sulfur, aluminum, nitrogen, copper and iron, casting, hot rolling, cold rolling in one step to a thickness of 0.5 mm, decarburization and recrystallization from t l i'ch a u. u and s. I mean that, in order to increase the uniformity of magnetic properties, 'boron is additionally introduced into the melt in the following ratio of melt components, May.
    Carbon 0,031-0,033 'Manganese 0.04-0.041 Silicon 3.13-3.14 Sulfur 0.02-0.021 Aluminum 0.003-0.004 Nitrogen 0.0046 Copper 0.38-0.5 g Boron 0.0013-0.0014 Iron Rest FROM and hot rolling carry out until thickness 1.27-3.05 mm. from
    1075 985 A
    类似技术:
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    CA1060320A|1979-08-14|Method of producing silicon-iron sheet material with boron addition and product
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    同族专利:
    公开号 | 公开日
    JPS52153829A|1977-12-21|
    PL198880A1|1978-02-13|
    IT1079715B|1985-05-13|
    DE2727028A1|1977-12-29|
    FR2355082A1|1978-01-13|
    YU151277A|1982-08-31|
    ATA420377A|1981-02-15|
    AT363980B|1981-09-10|
    ES459889A1|1978-11-16|
    BR7703868A|1978-03-28|
    AU2552277A|1978-11-30|
    RO71800A|1982-02-01|
    FR2355082B1|1983-12-30|
    BE855837A|1977-12-19|
    MX4369E|1982-04-19|
    IN146547B|1979-07-07|
    PL114568B1|1981-02-28|
    JPS6140726B2|1986-09-10|
    US4054470A|1977-10-18|
    SE7707033L|1977-12-18|
    CS218566B2|1983-02-25|
    GB1565471A|1980-04-23|
    HU175332B|1980-07-28|
    CA1082952A|1980-08-05|
    ZA773082B|1978-04-26|
    AU508960B2|1980-04-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE795249A|1972-02-11|1973-08-09|Allegheny Ludlum Ind Inc|ORIENTED SILICE STEELS CONTAINING COPPER|
    US3873380A|1972-02-11|1975-03-25|Allegheny Ludlum Ind Inc|Process for making copper-containing oriented silicon steel|
    US3873381A|1973-03-01|1975-03-25|Armco Steel Corp|High permeability cube-on-edge oriented silicon steel and method of making it|
    US3855019A|1973-05-07|1974-12-17|Allegheny Ludlum Ind Inc|Processing for high permeability silicon steel comprising copper|
    US3905843A|1974-01-02|1975-09-16|Gen Electric|Method of producing silicon-iron sheet material with boron addition and product|
    US3929522A|1974-11-18|1975-12-30|Allegheny Ludlum Ind Inc|Process involving cooling in a static atmosphere for high permeability silicon steel comprising copper|
    US3925115A|1974-11-18|1975-12-09|Allegheny Ludlum Ind Inc|Process employing cooling in a static atmosphere for high permeability silicon steel comprising copper|US4113529A|1977-09-29|1978-09-12|General Electric Company|Method of producing silicon-iron sheet material with copper as a partial substitute for sulfur, and product|
    US4174235A|1978-01-09|1979-11-13|General Electric Company|Product and method of producing silicon-iron sheet material employing antimony|
    US4177091A|1978-08-16|1979-12-04|General Electric Company|Method of producing silicon-iron sheet material, and product|
    US4244757A|1979-05-21|1981-01-13|Allegheny Ludlum Steel Corporation|Processing for cube-on-edge oriented silicon steel|
    JPS57145963A|1981-03-04|1982-09-09|Hitachi Metals Ltd|Material for magnetic head and its manufacture|
    MX167814B|1987-06-04|1993-04-13|Allegheny Ludlum Corp|METHOD FOR PRODUCING GEAR ORIENTED SILICON STEEL WITH SMALL BORO ADDITIONS|
    DE19745445C1|1997-10-15|1999-07-08|Thyssenkrupp Stahl Ag|Process for the production of grain-oriented electrical sheet with low magnetic loss and high polarization|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/696,970|US4054470A|1976-06-17|1976-06-17|Boron and copper bearing silicon steel and processing therefore|
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