• 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 induction crucible furnace for the smelting of materials comprises a crucible which is surrounded by the induction coils and yoke which are mounted upon an intermediate vessel or shell closed by a cover overlying a mass of insulating material interposed between the crucible and inductor and the shell. The intermediate shell has an outwardly extending support flange by which it is mounted on an outward flange of the outer housing with clearance, the clearance likewise being filled with insulating material through openings formed in the flange of the intermediate shell inwardly of the wall of the housing. The flange of the latter projects beyond the flange of the intermediate member and a cover is connected to the housing flange to hermetically seal the system.
    公开号:SU896358A1
    申请号:SU797770471
    申请日:1979-02-26
    公开日:1982-01-07
    发明作者:Димов Николов Иван；Марков Минчев Павел；Алексиев Димитров Марин；Петров Георгиев Асен；Георгиев Чорбов Илия
    申请人:Институт По Металознание И Технология На Металите (Фирма)；
    IPC主号:
    专利说明:

    (54) INDUCTION BATTLE OVEN
    one
    The invention relates to an induction crucible furnace for melting under vacuum or in a gaseous medium under pressure.
    Induction crucible furnaces for melting under vacuum or in a gaseous environment under pressure are known, in which the inductor, in which the crucible with the molten metal is located, and the shielding magnetic cores are fixed to the bottom or to the side walls of the body of the sealed vessel.
    The disadvantage of these furnaces is the need for large mounting distances between the inductor and the sealed vessel body, which leads to an increase in the dimensions of the latter and to a decrease in the efficiency of the furnace due to the structural failure and increased volume for vacuuming or filling with gas.
    In addition, there is a danger that when the crucible is broken, the melt will reach the body of the sealed vessel and, due to its high temperature, will cause a local decrease in its strength and eventual destruction, followed by an explosive release of hot metal in the workroom.
    The purpose of the invention is to create a design of an induction crucible furnace for melting under vacuum or in a gaseous medium under pressure with minimal sizes of a sealed vessel and free volumes in it and with increased operational reliability with regard to protecting the sealed vessel from contact with the molten metal.
    The goal is achieved by the fact that fQ in an induction crucible furnace for melting under vacuum or in a gaseous medium under pressure, consisting of an inductor, magnetic cores and the body of a sealed vessel with a cap for the vessel, the inductor and magnetic cores are fixed in the intermediate casing, and the magnetic cores are radially pressed to an inductor with fasteners passing through an intermediate casing, and an intermediate casing with an inductor and magnetic cores fixed in it is inserted into the body of a sealed vessel and rigidly closed comprised within captured at its upper end to the flange ring bearing housing sealed vessel.
    At the same time, the space between the inductor, the magnetic cores, the intermediate casing and the housing of the sealed vessel is filled with a refractory mass.
    In addition, the flange to the body of the sealed vessel has a diameter greater than the diameter of the bearing ring of the intermediate casing and a seal is fixed to this flange between it and the cap, and the diameter of the seal is also greater than the diameter of the ring, its ring. The fastening elements for pressing the magnetic cores to the inductor are a bolt of a screw connection to the intermediate casing.
    FIG. 1 shows the proposed furnace, longitudinal section; in fig. 2 - the same, top view with cross half section.
    The inductor 1 and the magnetic cores 25 are fixed in the intermediate casing 3, and the magnetic cores 25 are radially pressed to the inductor 1 by fastening elements 26, the passage w, through them through the intermediate casing 3. The fastening elements 26 are a screw bolt of the screw connection to the intermediate casing 3. The magnetic cores 25 are electrically insulated from inductor 1 by means of insulating gaskets 27. The inductor 1 and the magnetic cores 25 are axially fixed in relation to the intermediate casing 3 by bottom refractory 11 and the upper refractory 21 by pressing down the cap 24 fixed to the intermediate casing 3 by means of bolts 23. An intermediate casing 3 with inductor OD 1 and magnet tubes 25 fixed in it is inserted into the casing of the sealed vessel 10 and the ring 7 is rigidly fixed at its upper end with a ring 7 and bolts 6 to the flange 9 of the sealed vessel 10 Inside the inductor 1, the bottom furnace And, and the upper refractory 21, a crucible 2 is placed, in which the melt 12 is located.
    The furnace terminals 19 are connected to the inductor 1 by means of water-electric connections 13. The seals 15 between the terminals 19 and the passage plate 20 are pressed by means of nuts 17. The seal 16 between the passage plate 20 and the housing flange 14 of the sealed vessel 10 is pressed by bolts 18.
    The space between the inductor 1, the magnetic cores 25, the intermediate casing 3 and the housing of the sealed vessel 10 is filled with a refractory mass 28. In the non-drying ring 7, holes 4 are pierced to fill the refractory mass 28, and gas-tight filters 5 are installed in the holes 4.
    The flange 9 to the housing of the sealed vessel 10 has a diameter greater than the diameter of the bearing ring 7 of the intermediate casing 3, and a seal 8 is fixed to the flange 9 between it and the cap 22, and the diameter of the seal 8 is also larger than the diameter of the bearing ring 7.
    The induction crucible furnace 3 (sent by the material to be smelted and then sealed with the cap 22, evacuated or supplied gas under pressure, for example through the cap 22, and at the same time the furnace is connected to the electrical network by terminals 19, as in known furnaces of this The proposed furnace design, in contrast to the known ones, makes it possible that in case of an actual hole of the crucible 2, the liquid metal 12 under pressure would only reach the refractory mass 28 and cool there without entering the end act with housing 10.
    Thus, the proposed furnace is characterized by minimal free volumes between the inductor and the sealed vessel body and the minimum dimensions of the sealed vessel due to the created possibility of fixing the inductor and the magnetic conductors to the intermediate casing before placing the last s of the sealed vessel, which saves material for the sealed vessel and working gas when smelting in a gaseous environment under pressure, and the time for filling a sealed vessel also decreases working gas, respectively, time for evacuation; increased reliability when liquid metal comes into contact with the walls of the body
    The Q of the sealed vessel at the eventual crucible hole and the possibility of maximum removal of the sealing of the sealed vessel from the hot zone without increasing the furnace dimensions.
    权利要求:
    Claims (4)
    [1]
    1. Induction crucible furnace consisting of an inductor, magnetic cores and the body of a sealed vessel with a cap
    for the vessel, characterized in that the inductor and the magnetic cores are fixed in the intermediate casing, and the magnetic cores are radially pressed to the inductor by fasteners passing through the intermediate casing, and the intermediate casing with the inductor and magnetic cores fixed in it is inserted into the sealed vessel body and rigidly fixed shchims in its upper end of the bearing ring to the flange of the sealed vessel.
    [2]
    2. The furnace according to claim 1, characterized in that the space between the inductor, the magnetic cores, the intermediate casing and the housing of the sealed vessel is filled
    refractory mass.
    [3]
    3.Pech on PP. 1 and 2, characterized in that the flange to the body of the sealed vessel has a diameter greater than the diameter of the bearing ring of the intermediate casing and a seal is fixed to this flange between it and the cap, and the diameter of the seal is also larger than the diameter of the bearing ring.
    [4]
    4. Furnace on PP. 1-3, characterized in that the fastening elements for pressing the magnetic cores to the inductor are a screw bolt to the intermediate casing. ig. one
    26
    (ri-g. z
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    SU379842A1|1973-04-20|THERMORAL
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    同族专利:
    公开号 | 公开日
    CA1112699A|1981-11-17|
    AT372183B|1983-09-12|
    BG26139A1|1979-12-12|
    PL114419B1|1981-01-31|
    DE2907572A1|1979-08-30|
    SE7901748L|1979-08-28|
    PL213763A1|1979-12-17|
    CH641551A5|1984-02-29|
    US4227033A|1980-10-07|
    ATA147579A|1983-01-15|
    GB2016879A|1979-09-26|
    FR2418430A1|1979-09-21|
    GB2016879B|1982-07-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1050025B|1959-02-05|
    US1823873A|1930-01-23|1931-09-22|Westinghouse Electric & Mfg Co|Induction furnace|
    US2852587A|1955-11-07|1958-09-16|Ajax Engineering Corp|Induction furnace|
    DE1061003B|1958-04-12|1959-07-09|Otto Junker Fa|Coreless induction melting furnace for vacuum operation|
    US3004091A|1958-09-15|1961-10-10|Ajax Magnethermic Corp|Coreless induction furnace melting of metals|
    FR1220513A|1963-06-20|1960-05-25|Junker Otto|Coreless induction furnace|
    AT282220B|1966-04-01|1970-06-25|Wiener Schwachstromwerke Gmbh|Induction crucible furnace|
    DE2313157C3|1973-03-16|1981-12-17|Brown, Boveri & Cie Ag, 6800 Mannheim|Induction crucible furnace|
    DE2420533C2|1974-04-27|1982-11-18|Otto Junker Gmbh, 5107 Simmerath|Coreless mains frequency induction furnace for keeping warm, overheating and / or for treating and casting metals|DE3530471C2|1985-08-27|1990-05-23|Leybold Ag, 6450 Hanau, De|
    JP3039132B2|1992-05-08|2000-05-08|富士電機株式会社|Low pressure casting equipment|
    JP2006524314A|2003-04-18|2006-10-26|インダクトサーム・コーポレイション|Vacuum chamber for induction heating and induction melting|
    KR101943088B1|2011-08-15|2019-01-28|콘삭 코퍼레이션|Electric induction melting assembly|
    DE102013100463B3|2013-01-17|2014-06-12|Ald Vacuum Technologies Gmbh|Melting device for consolidating contaminated scrap|
    CN104613760A|2014-12-30|2015-05-13|朱兴发|Large-diameter circular ring stacked high-purity graphite crucible for electromagnetic induction slag smelter|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    BG7838842A|BG26139A1|1978-02-27|1978-02-27|Induction crucible furnace|
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