• 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:
    1. A process for the casting of metals wherein one electromagnetic confinement field generated by the inductor (3) applied to the liquid metal (2) and a stationary magnetic field generated by an annular coil (7) and a variable magnetic field generated by an annular coil (8) both applied above the level of liquid metal are caused to act simultaneously.
    公开号:SU1416050A3
    申请号:SU833621755
    申请日:1983-07-21
    公开日:1988-08-07
    发明作者:Вив Шарль
    申请人:Алюминиюм Пешинэ (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to metallurgy, and more specifically to a method for casting, in electromagnetic molds, predominantly aluminum alloys.
    The purpose of the invention is to improve the quality of cast ingots by increasing the uniformity of the structure over their cross section.
    The drawing shows a device for electromagnetic casting ingots, a longitudinal section.
    The continuous-cast ingot 1, the upper part 2 of which is in the liquid state, is surrounded by an inductor 3, which creates a holding electromagnetic field, by the screen 4 and by the cooling system 5. The electromagnetic field creates turbulence in the liquid metal along the trajectory 6. The metal meniscus is affected by a constant magnetic field created by the coil 7 and an alternating magnetic field created by the coil 8. The field created by the coil 8 causes the metal to circulate along the trajectory 9 , and the combined effect of the fields created by the caps 8 and 7 causes radial vibrations in the metal, indicated by the position 10, with a frequency equal to the frequency of the alternating field. These oscillations provide for grain refinement.
    Example. A billet with a diameter of 350 mm is cast from aluminum alloy 2024, cleaned with AT5B in an amount of 1 kg / ton of aluminum. The meniscus of a metal is affected by a constant magnetic field of 0.04 T created by a ring coil 7 placed above the screen, fed by a current of 17,500 ampere-turns at a constant voltage of 24 BV. The coil 8 placed inside the coil 7 is powered by a voltage 75 V current 3800 ampere-turns with a period of 50 Hz. The constant magnetic field can be changed by setting a ring-shaped iron core inside the coil 7.
    With the combined effect of a constant magnetic and retaining field, an improvement in the surface state and homogeneity of the metal in the cortical zone of the cast ingots is achieved. Impact Variable Magnet
    This field leads to the grinding of the grain-55, above the meniscus of the metal in the crystal and to greater homogeneity of the crystallizer.
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    This reduces the phenomenon of pore formation. In addition, an alternating magnetic field, when combined with a constant magnetic field, creates changes in radial oscillations, which ensure grain refinement.
    Using the proposed method will improve the quality of the obtained aluminum ingots by increasing the homogeneity of the structure over their cross section.
    权利要求:
    Claims (6)
    [1]
    1. Method of continuous electromagnetic casting ingots mainly of aluminum alloys, including the supply of metal to the electromagnetic mold, cooling of the metal with simultaneous exposure
    a magnetically variable permanent magnetic field and the lateral surface of the ingot are held by the magnetic field, characterized in that, in order to improve the quality of the cast ingots by increasing the uniformity of the structure over their cross section, the metal is additionally affected by a variable magnetic field, this constant and alternating magnetic fields affect the meniscus of the metal ..
    [2]
    2. Method POP1, characterized in that the constant magnetic field has a value of 0.01 ... 0.5 T.
    [3]
    3. Method according to paragraphs. 1 and 2, in that the constant magnetic field is changed by the iron core.
    [4]
    4. Method non.l, characterized in that the alternating magnetic field has a frequency of 5 ,, 10 Hz.
    [5]
    5. Method according to paragraphs. 1-3, characterized in that a constant magnetic field is created by an annular coil, the lower part of which is placed above the meniscus of the metal in the crystallizer.
    [6]
    6. Method pop. 1 and 4, characterized in that the alternating magnetic field is created by an annular coil, the lower part of which is
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR2530510B1|1985-07-05|
    CA1203069A|1986-04-15|
    EP0100289A3|1984-04-11|
    USRE32529E|1987-10-27|
    JPH0160337B2|1989-12-22|
    FR2530510A1|1984-01-27|
    AU1716483A|1984-01-26|
    EP0100289A2|1984-02-08|
    AT16771T|1985-12-15|
    JPS5935865A|1984-02-27|
    EP0100289B1|1985-12-04|
    DE3361420D1|1986-01-16|
    AU570210B2|1988-03-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1807435A1|1968-11-07|1970-10-01|Demag Ag|Steel extrusion method|
    FI63682C|1978-07-28|1983-08-10|Concast Ag|FOER FARING FOER GJUTNING AV EN METALLSTAONG|
    DE2914246C2|1979-03-07|1981-11-12|Schweizerische Aluminium AG, 3965 Chippis|Electromagnetic continuous casting mold|
    US4319625A|1980-01-14|1982-03-16|Olin Corporation|Electromagnetic casting process utilizing an active transformer-driven copper shield|
    SE436251B|1980-05-19|1984-11-26|Asea Ab|SET AND DEVICE FOR MOVING THE NON-STANDED PARTS OF A CASTING STRING|
    US4373571A|1980-12-04|1983-02-15|Olin Corporation|Apparatus and process for electromagnetically shaping a molten material within a narrow containment zone|
    FR2530510B1|1982-07-23|1985-07-05|Cegedur|ELECTROMAGNETIC CASTING PROCESS FOR METALS IN WHICH AT LEAST ONE MAGNETIC FIELD DIFFERENT FROM THE CONTAINMENT FIELD|
    US4544016A|1983-04-21|1985-10-01|Yetselev Zinovy N|Continuous casting process and apparatus|FR2530510B1|1982-07-23|1985-07-05|Cegedur|ELECTROMAGNETIC CASTING PROCESS FOR METALS IN WHICH AT LEAST ONE MAGNETIC FIELD DIFFERENT FROM THE CONTAINMENT FIELD|
    FR2570304B1|1984-09-19|1986-11-14|Cegedur|METHOD FOR ADJUSTING THE LEVEL OF THE CONTACT LINE OF THE FREE METAL SURFACE WITH THE LINGOTIERE IN A VERTICAL CAST|
    US5246060A|1991-11-13|1993-09-21|Aluminum Company Of America|Process for ingot casting employing a magnetic field for reducing macrosegregation and associated apparatus and ingot|
    CH688129A5|1992-10-06|1997-05-30|Alusuisse Lonza Services Ag|Casting machine for the vertical continuous casting in a magnetic field.|
    AUPN426095A0|1995-07-19|1995-08-10|Bhp SteelPty Limited|Method and apparatus for giving vibration to molten metal in twin roll continuous casting machine|
    US6845809B1|1999-02-17|2005-01-25|Aemp Corporation|Apparatus for and method of producing on-demand semi-solid material for castings|
    FR2801523B1|1999-11-25|2001-12-28|Usinor|CONTINUOUS CASTING PROCESS FOR METALS OF THE TYPE USING ELECTROMAGNETIC FIELDS, AND LINGOTIERE AND CASTING PLANT FOR IMPLEMENTING SAME|
    US6402367B1|2000-06-01|2002-06-11|Aemp Corporation|Method and apparatus for magnetically stirring a thixotropic metal slurry|
    US6399017B1|2000-06-01|2002-06-04|Aemp Corporation|Method and apparatus for containing and ejecting a thixotropic metal slurry|
    US6432160B1|2000-06-01|2002-08-13|Aemp Corporation|Method and apparatus for making a thixotropic metal slurry|
    US6796362B2|2000-06-01|2004-09-28|Brunswick Corporation|Apparatus for producing a metallic slurry material for use in semi-solid forming of shaped parts|
    US7024342B1|2000-07-01|2006-04-04|Mercury Marine|Thermal flow simulation for casting/molding processes|
    US6611736B1|2000-07-01|2003-08-26|Aemp Corporation|Equal order method for fluid flow simulation|
    CA2455072C|2002-12-06|2009-06-02|Marcin Stanislaw Kasprzak|Electromagnetic method and apparatus for treatment of engineering materials, products, and related processes|
    JP6234841B2|2014-02-24|2017-11-22|株式会社神戸製鋼所|Continuous casting equipment for ingots made of titanium or titanium alloy|
    KR20210120119A|2014-05-21|2021-10-06|노벨리스 인크.|Mixing eductor nozzle and flow control device|
    FR3051698B1|2016-05-30|2020-12-25|Constellium Issoire|METHOD OF MANUFACTURING LAMINATION INGOTS BY VERTICAL CASTING OF AN ALUMINUM ALLOY|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8213220A|FR2530510B1|1982-07-23|1982-07-23|ELECTROMAGNETIC CASTING PROCESS FOR METALS IN WHICH AT LEAST ONE MAGNETIC FIELD DIFFERENT FROM THE CONTAINMENT FIELD|
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