US3721432A - Apparatus for reception and discharge of liquid metal - Google Patents

Apparatus for reception and discharge of liquid metal Download PDF

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Publication number
US3721432A
US3721432A US00089778A US3721432DA US3721432A US 3721432 A US3721432 A US 3721432A US 00089778 A US00089778 A US 00089778A US 3721432D A US3721432D A US 3721432DA US 3721432 A US3721432 A US 3721432A
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US
United States
Prior art keywords
container
feed
cavity
liquid metal
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00089778A
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English (en)
Inventor
E Buhrer
A Alt
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Georg Fischer AG
Original Assignee
Georg Fischer AG
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Filing date
Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations

Definitions

  • the reception and discharge container includes a valve operated opening for selectively pouring out the liquid metal.
  • a feed channel is provided between the lower end portions of the feed cavity and the container cavity such that liquid metal poured into the feed cavity flows into the container cavity through the feed channel.
  • the feed container has a wall the height of which is equal to the maximum level of liquid metal in the container cavity such that when the liquid metal reaches the desired maximum level, the excess liquid metal is poured off over the wall.
  • the present invention relates to an improved apparatus having a container for the reception and discharge of liquid metal which is equipped with a device for heating the liquid metal and a stopper mechanism at the pouring outlet, and more particularly to such an apparatus having an improved filling arrangement.
  • Molding and casting equipment is known in which the pouring apparatus is provided with a container for reception and discharge of liquid metal, the container having on its underside a pouring outlet which can be closed with a stopper. These containers also include filling ports for the liquid metal. There are also known types in which, instead of having filling ports, the curved top of the container may be lifted and tilted for filling.
  • interruptions of operation take place. These interruptions may be caused by regular work breaks, by operational breakdowns, change of mold, etc. If for example a liquid metal is poured out, as in the case of spherical graphite'iron containing traces of magnesium, the resulting material will be spherical graphite iron only if the residual magnesium content is retained over a long period of time. This is not possible with presently known apparatus. In the known apparatus, one an operational interruption exceeds minutes, it is necessary to repeat the magnesium treatment because the residual magnesium content is no longer of the necessary magnitude.
  • the apparatus for the reception and discharge of liquid metal includes a container, a heating device, and
  • a feed passage is provided at the lower portions of the container cavity and of the feed cavity for flow of liquid metal to the container.
  • FIG. 1 is a cross section of the container and feed arrangement of the present invention taken along line I I of FIG. 3;
  • FIG. 2 is a cross section of the container and of the heating unit of the present invention taken along line II-II of FIG. 3;
  • FIG. 3 is a top view of the container
  • FIG. 4 is a section of the feed opening taken along line IVIV of FIG. 3.
  • FIG. 1 illustrates a preferred embodiment of the present invention.
  • a container 1 having a cavity 7 therein is detachably connected with a feed container 2 by means of a joint 5.
  • Joint 5 is not further described herein. Its design should be apparent to those skilled in the art.
  • the feed container 2 has a feed cavity 3 formed therein and has at its upper end a pouring-in opening 6.
  • Feed container 2 is at its lower end connected with the container cavity 7 by means of an inclined feed passage or channel 4.
  • the angle of inclination a of feed channel 4 is preferably approximately equal to the angle of inclination B of the heating channel 12 illustrated in FIG. 2.
  • a valve device 8 is provided, which comprises a hermetically closing cap 9 and a slide valve member 10.
  • Maximal fill level 18 of the liquid metal in container cavity 7 is the same level as rim 19 (see FIG. 4) of pouring opening 6 of feed container 2.
  • FIG. 2 illustrates the container 1, which is detachably connected with a heating unit 11.
  • Heating unit 1 1 comprises a heating channel 12, which is directly connected with container cavity 7, also at the lower portion of cavity 7.
  • a stopper bar 13 (already known per se) is mounted in container 1 and cooperates with the valve seat 14, as is well known.
  • a seal 15 for the stopper bar 13 is provided in the curved upper wall of container 1 where the stopper bar 13 enters the container 1 to seal out the ambient atmosphere from container cavity 7.
  • An opening 20 is provided to permit connection with a vacuum pump (not shown in the drawings) or connection with a gas intake (also not shown in the drawings).
  • FIG. 3 illustrates a top view of the arrangement of container 1 with feed container 2 and heating unit 11.
  • Feed container 2 and heating unit 11 are arranged on the same side of container 1, so that when shutting the apparatus down, it is possible to simultaneously empty heating channel 12 and the feed channel 4 by tilting the container 1.
  • FIG. 4 illustrates a sectional view of feed container 2 taken along line IVIV of FIG. 3, showing the feed opening 6, feed cavity 3, feed channel 4, rim 19 and slag overflow 17.
  • Liquid metal is introduced into the container 1 through the feed opening 6 until the liquid metal rises to the level of the rim 19 (FIG. 4) of feed opening 6.
  • This level is the same as the desirable maximal fill level 18 (FIG. 1) of the liquid metal within the container cavity 7.
  • feed container 2 is formed with a feed cavity 3
  • the slag contained in the liquid metal does not reach container cavity 7, but flows'off over the rim 19 of the feed opening 6 after the container 1 is filled to the level 18.
  • the result is that no slag gets into container cavity 7.
  • the additives or alloying elements may display a lower specific gravity than the liquid metal when the present invention is used.
  • a suction pump may be fitted over opening 20 so as to create a pressure (negative) in container cavity 7.
  • feed cavity 3 container cavity 7 and lower feed channel 4 provides a self-leveling system whereby the liquid level in the feed cavity 3 and container cavity 7 seek the same level. This is similar to an inverted siphon arrangement.
  • the desired temperature of the liquid metal in container l is maintained by the attached heating unit 11, which may also operate with well known automatic temperature regulation.
  • Constant maintenance of a desired temperature in liquid metals through the incorporation of an inductive heating apparatus, and the simultaneous prevention of the leaking in of air from the ambient atmosphere and of the leaking in of slag into container cavity 7 by virtue of the use of the feed cavity and lower feed channel combination, permits normal treatment of liquid metals whose composition may vary, such as, for example, magnesium-treated iron for spherical graphite iron. Normal casting can be carried out even after a fairly long interruption of operations without losses in quality and without the necessity of conducting a repeat treatment operation.
  • siphon-type feed opening makes it possible to eliminate the maintenance operation of slag removal from-the container 1 altogether, because any slag introduced with the liquid metal into feed cavity 3 is automatically separated off over rim 19 of the feed opening 6.
  • liquid metal is already slag-free in the container 1, it is possible to introduce alloying constituents or other elements into the molten metal, even if the additives have a lower specific gravity than the liquid metal.
  • Tests indicate that by virtue of the present apparatus, the life-span of the container lining, of the stopper seal 15, and of the stopper pouring opening 14 is considerably increased.
  • a container in accordance with the present invention permits, by means of coupling a vacuum pump to opening 20, the reduction of the gas content of the liquid metal.
  • a gas can also be introduced through the provided opening 20 so as to control the atmosphere in the container cavity 7.
  • Apparatus for the transfer of liquid metal, subject to slag formation, to casting molds comprising:
  • a closed container (1) having a cavity (7) therein for receiving liquid metal and isolating the metal from ambient air, said container (1) being formed with a pouring opening (14) located at a lower end portion thereof and stopper means (13) for selectively opening and closing said pouring opening to selectively permit liquid metal to flow from the container by gravity;
  • heating means (11) coupled to said container cavity (7) for heating the liquid metal therein;
  • a feed container (2) having a feed cavity (3) therein, said feed container (2) being coupled to and in liquid communication with said liquid container (1); said feed cavity extending at least as high as the desired maximal liquid level in said container cavity (7) and said feed container having an overflow rim (19);
  • a feed channel (4) coupled between the lower end portion of said feed cavity (3) and the lower end portion of said container cavity (7) and forming said liquid communication, such that liquid metal poured into said feed cavity (3) flows into said container cavity (7) through said feed channel (4) and liquid metal can be stored in the container free from contact with ambient air, and removed from the container by direct flow through the pouring opening.
  • Apparatus according to claim 1 comprising a heating channel (12) coupling the lower end portion of said container cavity (7) to said heating means (1 1).
  • said feed container (2) includes a wall having said rim (19) located at an overflow level corresponding to the maximum allowable liquid metal level (18) in said container (l such that when said liquid metal reaches said maximum level (18), further liquid metal poured into said feed container (2) will overflow said wall, and slag will also overflow said wall.
  • stopper means comprises a stopper bar (13) passing through a wall of said container (1), and further comprising sealing means coupled to said container for container (1) includes a valve type opening formed in a wall thereof for introduction of additives or the like to said liquid metal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Thermally Insulated Containers For Foods (AREA)
US00089778A 1969-11-18 1970-11-16 Apparatus for reception and discharge of liquid metal Expired - Lifetime US3721432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1713169A CH516362A (de) 1969-11-18 1969-11-18 Behälter für die Aufnahme und Abgabe von flüssigem Metall

Publications (1)

Publication Number Publication Date
US3721432A true US3721432A (en) 1973-03-20

Family

ID=4423000

Family Applications (1)

Application Number Title Priority Date Filing Date
US00089778A Expired - Lifetime US3721432A (en) 1969-11-18 1970-11-16 Apparatus for reception and discharge of liquid metal

Country Status (9)

Country Link
US (1) US3721432A (enrdf_load_stackoverflow)
JP (1) JPS5014220B1 (enrdf_load_stackoverflow)
BE (1) BE758998A (enrdf_load_stackoverflow)
CA (1) CA928033A (enrdf_load_stackoverflow)
CH (1) CH516362A (enrdf_load_stackoverflow)
DK (1) DK132208C (enrdf_load_stackoverflow)
FR (1) FR2067355B1 (enrdf_load_stackoverflow)
GB (1) GB1327277A (enrdf_load_stackoverflow)
SE (1) SE370649B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5161315U (enrdf_load_stackoverflow) * 1974-11-06 1976-05-14
US3971547A (en) * 1973-08-23 1976-07-27 Allmanna Svenska Elektriska Aktiebolaget Apparatus and method for refining metal
US4139184A (en) * 1977-06-13 1979-02-13 Republic Steel Corporation Gas stirrer
RU2250153C1 (ru) * 2003-09-16 2005-04-20 Федеральное государственное унитарное предприятие "Московское машиностроительное производственное предприятие "САЛЮТ" ФГУП "ММПП "САЛЮТ" Способ литья металла в вакууме и устройство для его осуществления
CN100434208C (zh) * 2006-11-02 2008-11-19 上海交通大学 用于镁合金熔体转炉的潜流式通道机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518915A1 (fr) * 1981-12-25 1983-07-01 Dn Metall Procede de coulee de metaux, poche pour sa mise en oeuvre et pieces obtenues par ledit procede
CN110756733B (zh) * 2019-09-27 2021-06-18 中国航发南方工业有限公司 降低叶轮精密铸造夹杂报废率的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1289845A (fr) * 1960-08-03 1962-04-06 Dispositif destiné à distribuer et transférer des quantités dosées de liquides ou matières fondues, d'un récipient jusqu'à l'endroit d'utilisation
SE306142B (enrdf_load_stackoverflow) * 1964-11-28 1968-11-18 Asea Ab
DE1508560B2 (de) * 1966-11-21 1970-08-06 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren und orrichtung zum Entleeren von Schmelz- oder Warmhalteöfen
SE324863B (enrdf_load_stackoverflow) * 1968-11-14 1970-06-15 Asea Ab

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971547A (en) * 1973-08-23 1976-07-27 Allmanna Svenska Elektriska Aktiebolaget Apparatus and method for refining metal
JPS5161315U (enrdf_load_stackoverflow) * 1974-11-06 1976-05-14
US4139184A (en) * 1977-06-13 1979-02-13 Republic Steel Corporation Gas stirrer
RU2250153C1 (ru) * 2003-09-16 2005-04-20 Федеральное государственное унитарное предприятие "Московское машиностроительное производственное предприятие "САЛЮТ" ФГУП "ММПП "САЛЮТ" Способ литья металла в вакууме и устройство для его осуществления
CN100434208C (zh) * 2006-11-02 2008-11-19 上海交通大学 用于镁合金熔体转炉的潜流式通道机构

Also Published As

Publication number Publication date
JPS5014220B1 (enrdf_load_stackoverflow) 1975-05-26
DE2050933B2 (de) 1977-03-31
GB1327277A (en) 1973-08-22
CH516362A (de) 1971-12-15
DE2050933A1 (de) 1971-05-27
FR2067355B1 (enrdf_load_stackoverflow) 1974-09-20
DK132208B (da) 1975-11-10
CA928033A (en) 1973-06-12
SE370649B (enrdf_load_stackoverflow) 1974-10-28
DK132208C (da) 1976-04-20
FR2067355A6 (enrdf_load_stackoverflow) 1971-08-20
BE758998A (fr) 1971-04-30

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