• 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 grain-oriented electromagnetic steel sheet (1) with improved watt loss W17/50 and a method for its production is described, whereby steel sheet (1), which has been subjected to final high-temperature annealing in order to approximate the crystal orientation of the sheet in a (110) [001] orientation is irradiated with a laser beam (2). Thanks to the laser beam irradiation, regions of high dislocation density (d) are locally formed in the steel sheet (1) and thereby magnetic domains are subdivided, with the result that a low watt loss is activated.
    公开号:SU1001864A3
    申请号:SU792790763
    申请日:1979-07-25
    公开日:1983-02-28
    发明作者:Итияма Тадаси；Ямагути Сигехиро；Иути Тору；Куроки Кацуро
    申请人:Ниппон Стил Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The closest in technical essence and the achieved result to the proposed is a method of producing electrical steel sheet with a oriented texture, which includes the following operations: smelting, casting, hot rolling, cold rolling in one or two passes, with intermediate annealing, decarburizing and final high temperature annealing 3.
    The disadvantage of this method is high magnetic flux density and power loss.
    The purpose of the invention is to reduce the magnetic flux density and power loss.
    This goal is achieved by the fact that, according to the method for producing an electrical steel sheet with a oriented texture, including cold rolling with intermediate anneals, after high-temperature annealing, the sheet is further irradiated with a laser beam perpendicular to the rolling direction
    0,004 J P 1.16
    where d is the width of the laser beam;
    P is the laser energy density
    ray;
    6 is the emission distance. P jS and mep 1. A hot rolled 1100 mm wide steel sheet containing 0., 051% carbon, 2.92% silicon, 0.026% sulfur and 0.027% acid-soluble sshumini, subjected to annealing at 1120 ° С in. Flow 2 NMH, cold
    Rolling to a thickness of 0.30 mm and decarburization for 4 minutes in a humid hydrogen atmosphere (gaseous medium). Next, the sheet is subjected to high-temperature annealing at 1200 s for 20 h.
    The CllOJ (001) oriented steel sheet treated with this mode has the following properties: magnetic flux density Bg 1.935 T; loss of active power 1/10 W / k
    Next, the steel strip is subjected to processing by a laser beam in the perpendicular direction to the rolling direction 5, having a pulse width
    30 NS and with the following condition: the energy density of a pulsed laser beam (P) is 0.8. emission distance (E) 10 mm; irradiation width (d) 0.1 mm; 0,0064.
    After processing the steel sheet; The following properties have been obtained for this method: magnetic flux density Bg 1.934 T; the magnitude of the loss of 5 active power 47/50 1,08 W / kg.
    The table shows examples of the performance of the proposed method, the values of Bg and D ° of laser beam treatment, respectively.
    you have become 1-4: Vo 1,954; 1,927; 1,926; 1,943; W. ,, .., .1.06; 1.05; 1.14; 1.02).
    Thus, the proposed method for producing an oriented electrical steel sheet makes it possible to reduce power losses by a value of 0.02-0.08 W / kg.
    权利要求:
    Claims (3)
    [1]
    Claim method A method for producing an electrical steel sheet with a oriented texture, comprising a cold pro: roller with intermediate annealing, decarburizing and high-temperature annealing, characterized in that in order to reduce the magnetic flux density and the power loss after high-temperature
    Annealing the sheet is further subjected to irradiation with a laser beam, perpendicular to the rolling direction, provided
    0.004 - | -p% 1.16
    where d is the width of the laser beam;
    P is the energy density of the laser beam;
    g
    emission distance, Sources of information taken into account during the examination 1. US patent 3990923, cl. 6 148-111, 1976. 100186 i
    [2]
    2. Kovalenko B.C. et al. Surface hardening of parts with the help of a laser. -RJ Metallurgi, 11BZZZ / 1975.
    [3]
    3. Patent of England 1512632, cl. C 7 D, 06/01/78.
    类似技术:
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    SU502963A1|1976-02-15|The method of processing electrical steel
    KR960023138A|1996-07-18|Oriented electrical steel sheet with excellent magnetic properties and manufacturing method thereof
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    同族专利:
    公开号 | 公开日
    PL217388A1|1980-08-25|
    JPS572252B2|1982-01-14|
    PL126505B1|1983-08-31|
    JPS5518566A|1980-02-08|
    RO78571A|1982-04-12|
    EP0008385A1|1980-03-05|
    US4293350A|1981-10-06|
    EP0008385B1|1984-05-16|
    DE2966985D1|1984-06-20|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP9121778A|JPS572252B2|1978-07-26|1978-07-26|
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