• 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:
    An inductor for an electromagnetic mold used for example for continuous casting of long format rolling ingots has a metallic loop with a hollow space in it to convey a coolant. The vertical dimension at the middle of the sidewall (H1) of the loop is a multiple of the vertical dimension (H2) at the corners of the loop. Such a device compensates for the shrinkage which occurs at the sidewall of the ingot and yields ingots which do not suffer from the concavity which would otherwise occur there.
    公开号:SU948283A3
    申请号:SU782690953
    申请日:1978-11-30
    公开日:1982-07-30
    发明作者:Мейер Ханс-Антон
    申请人:Швайцерише Алюминиум А.Г. (Фирма)；
    IPC主号:
    专利说明:

    (54) CRYSTALLIZEDATOR-INDUCTOR FOR CONTINUOUS CASTING OF ALUMINUM SLABS
    The invention relates to metallurgy, in particular to the continuous casting of metals and can be used in the casting of aluminum slabs with a high content of magnesium. A crystallized op-inducer is known for casting metal slabs, containing two side and two end walls. To compensate for the concavity of the slab surfaces as a result of shrinkage, the side walls of the inductor mold are made convex outward tl. A disadvantage of the design of the induction chip is the complexity of its manufacture. An induction mold is known, which contains two end walls and two lateral walls — of variable height 2. However, such an induction mold does not provide the required degree of compensation for shrinking over wide edges and obtaining a slab with exact 1 and size and a given shape. The purpose of the invention is to reduce the degree of concavity of the slab surface. This goal is achieved by the fact that in an inductive mold containing two end walls and two side walls - of variable height, the ratio of the height of the side wall in its middle to the height at the ends is 1.05-2.5. In this case, the side wall in the longitudinal section has the shape of a polygon, in which the ratio of the lengths of the lower and upper sides is from 1/2 to 1/3. The lateral wall of the inductor mold in longitudinal section may have the shape of a pentagon. The bottom side of the mold side wall inductor in longitudinal section is made in the form of a circular arc. Non-parallel sides of the side wall in the longitudinal section. They can be stepped. FIG. 1 shows a mold-inductor, top view; in fig. 2-6 embodiments of the inductor crystallizer side wall, longitudinal section; in fig. 7 and 8 are embodiments of the side wall of the inductor mold, cross section. The inductor mold contains two copper end walls 1 two
    Median side walls 2, forming a casting cavity 3.
    To cool the crystallizer, the inductor walls are made with internal cavities 4 for the circulation of a cooler (Fig. 7). In another embodiment, the cooling system includes pipes 5 attached to the walls. The inductor mold is connected to a high frequency alternator (not shown).
    The side wall 2 is made of variable height and has the largest size H in its middle and the smallest size HI at the ends.
    As experiments have shown, the optimum ratio of heights H: H is 1.05: 2.5.
    In this case, in the longitudinal section, the side wall 2 can be made in the form of a polygon, in which the ratio of the lengths of the lower b and upper 7 sides is from 1/2 to 1/3.
    In one embodiment, the longitudinal section of the bobq wall 2 has the shape of a pentagon (Fig. 3). In another embodiment, the lower side 8 of the side wall 2 in a longitudinal section is made along an arc of a circle (Fig. 4). Non-parallel side 9 of the side wall 2 in longitudinal section can be made stepped (Fig. 5)
    The device works as follows.
    When a high-frequency alternator is turned on in an inductor mold, an electromagnetic field is formed, the intensity of which is determined by the value of the current in the inductor, and its distribution is determined by the definition of the current density Pel.
    The vertical component of the magnetic field induces a vortex current in the molten metal passing through the casting cavity of the crystallizer-inductor. As a result of the interaction of the eddy current with the electromagnetic field of the crystallizer-inductor, electromagnetic pressure arises.
    The ratio of the metalostatic pressure in the molten metal to the electromagnetic pressure determines the shape and dimensions of the cast slab.
    Changing the height of the side wall of the mold-inductor QT mid to the ends allows you to adjust the intensity of the electromagnetic field
    and the current density associated with it, and hence the size of the slab in certain places of its cross section.
    A decrease in the current density from the ends to the middle of the lateral wall of the inductor mold leads to a corresponding increase in the size of the slabs in the indicated direction.
    Selecting the shape of the longitudinal section
    0 the lateral wall of the inductor mold provides the required degree of compensation for shrinkage on the lateral side of the slab. When casting a slab of 300x1050 mm in size from an aluminum alloy with a high magnesium content at a casting speed of 8-10 cm / s and with a ratio of H: tt2 1.2, the shrinkage compensation on the side of the slab is co. puts up to 5 mm.
    权利要求:
    Claims (5)
    [1]
    1. Induction crystallizer for continuous casting of aluminum slabs,
    containing two end walls and two side walls - of variable height, characterized in that, in order to reduce the degree of concavity of the slab surface, the ratio of the height of the side wall in its middle to the height at the ends is 1.05-2.5.
    [2]
    2. The crystallizer inductor
    Claim 1, characterized in that the side wall in the longitudinal section has the shape of a polygon, and the ratio of the lengths of the lower and upper sides is 1 / 2-1 / 3.
    [3]
    3. The inducer-mold according to claim 1, characterized in that the side wall is in longitudinal section in the shape of a pentagon.
    [4]
    4. Induction crystallizer
    Claim 1, characterized in that the lower side of the side wall 5 in the longitudinal section is made in the form of an arc of a circle.
    [5]
    5. The crystallizer inductor
    Section 1, which is distinguished by the fact that the non-parallel sides of the side wall 0 in the longitudinal section are stepped.
    Sources of information taken into account in the examination
    1. Forward Germany No. 1508906, 5 cells. B 22 D 11/04, 1969i
    2. USSR author's certificate number 344691, cl. B 22 D 11/14, 1969.
    AND,
    n
    类似技术:
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    CA1165089A|1984-04-10|Electromagnetic shape control by differentialscreening and inductor contouring
    US3515205A|1970-06-02|Mold construction forming single crystal pieces
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    SU503626A1|1976-02-25|The method of casting continuous or semi-continuous method of non-magnetisable metals in an electromagnetic field
    SU1577913A1|1990-07-15|Top for ingot mould
    RU41653U1|2004-11-10|STAINLESS STEEL FORMING
    同族专利:
    公开号 | 公开日
    GB2009002A|1979-06-13|
    AT362540B|1981-05-25|
    US4216817A|1980-08-12|
    NO784060L|1979-06-06|
    CH625441A5|1981-09-30|
    ZA786807B|1979-11-28|
    NL184262B|1989-01-02|
    ATA802978A|1980-10-15|
    JPS6227903B2|1987-06-17|
    DE2848808A1|1979-06-07|
    NL7811336A|1979-06-07|
    NO151690C|1985-05-22|
    HU178118B|1982-03-28|
    FR2410521B1|1983-09-23|
    CA1132671A|1982-09-28|
    PL114846B1|1981-02-28|
    JPS5486436A|1979-07-10|
    IT7830548D0|1978-12-05|
    SE440492B|1985-08-05|
    BE872521A|1979-03-30|
    GB2009002B|1982-02-17|
    NL184262C|1989-06-01|
    FR2410521A1|1979-06-29|
    PL211464A1|1979-07-30|
    NO151690B|1985-02-11|
    SE7812452L|1979-06-06|
    DE2848808C2|1984-08-16|
    IT1101516B|1985-10-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE965528C|1943-06-22|1957-06-13|Ver Leichtmetall Werke Ges Mit|Process for the continuous casting of rolling ingots|
    FR1101283A|1954-03-19|1955-10-04|Pechiney|Metal casting|
    SU344691A1|1969-12-22|1977-02-05|Device for group continuous casting of metals|
    US3702155A|1970-12-09|1972-11-07|Kuibyshevsky Metallurigchesky|Apparatus for shaping ingots during continuous and semi-continuous casting of metals|
    CH627956A5|1977-02-03|1982-02-15|Asea Ab|ELECTROMAGNETIC MULTI-PHASE STIRRING DEVICE ON A CONTINUOUS CASTING MACHINE.|US4458744A|1979-11-23|1984-07-10|Olin Corporation|Electromagnetic casting shape control by differential screening and inductor contouring|
    US4321959A|1979-07-11|1982-03-30|Olin Corporation|Electromagnetic casting shape control by differential screening and inductor contouring|
    US4530394A|1979-07-11|1985-07-23|Olin Corporation|Controlled water application for electromagnetic casting shape control|
    US4471832A|1980-12-04|1984-09-18|Olin Corporation|Apparatus and process for electromagnetically forming a material into a desired thin strip shape|
    US4606397A|1983-04-26|1986-08-19|Olin Corporation|Apparatus and process for electro-magnetically forming a material into a desired thin strip shape|
    US4373571A|1980-12-04|1983-02-15|Olin Corporation|Apparatus and process for electromagnetically shaping a molten material within a narrow containment zone|
    US4469165A|1982-06-07|1984-09-04|Olin Corporation|Electromagnetic edge control of thin strip material|
    US4512386A|1982-11-12|1985-04-23|Swiss Aluminium Ltd.|Adjustable mold for electromagnetic casting|
    DE3406699C1|1984-02-22|1985-01-10|Schweizerische Aluminium Ag, Chippis|Electromagnetic continuous casting mold|
    FR2609656B1|1987-01-15|1989-03-24|Cegedur|METHOD OF ADJUSTING THE CONTACT LINE OF THE FREE METAL SURFACE WITH THE LINGOTIERE IN A VERTICAL CAST OF PRODUCTS OF ANY SECTION|
    US4796689A|1987-03-23|1989-01-10|Swiss Aluminium Ltd.|Mold for electromagnetic continuous casting|
    US20180193911A1|2015-09-11|2018-07-12|Jfe Steel Corporation|Method of producing mixed powder for powder metallurgy, method of producing sintered body, and sintered body|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH1482077A|CH625441A5|1977-12-05|1977-12-05|
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