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US3765798A - Electromagnetic conveyor trough for conveying liquid metals - Google Patents

Electromagnetic conveyor trough for conveying liquid metals Download PDF

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Publication number
US3765798A
US3765798A US00259675A US3765798DA US3765798A US 3765798 A US3765798 A US 3765798A US 00259675 A US00259675 A US 00259675A US 3765798D A US3765798D A US 3765798DA US 3765798 A US3765798 A US 3765798A
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US
United States
Prior art keywords
trough
liquid metal
opening
electromagnetic
delivery 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
US00259675A
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English (en)
Inventor
Starck A Von
S Husmann
H Gerbig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Elotherm GmbH
Original Assignee
AEG Elotherm GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AEG Elotherm GmbH filed Critical AEG Elotherm GmbH
Application granted granted Critical
Publication of US3765798A publication Critical patent/US3765798A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B22D39/003—Equipment for supplying molten metal in rations using electromagnetic field
    • B22D39/006—Electromagnetic conveyors

Definitions

  • ABSTRACT An electromagnetic conveyor of the type having a trough body ascending obliquely from a liquid metal storage vessel and an associated travelling field inductor for producing a field which causes liquid metal in the vessel to be conveyed upward to a pouring spout.
  • a side wall of the body has an opening near the upper end of the body from which a delivery channel extends at an angle to the trough direction.
  • the trough body is also preferably provided with a flow restricting orifice having a mean cross sectional dimension of no more than 80 percent and preferably not more than 75 percent of the mean trough body width in the same direction and also an obliquely extending terminal wall for deflecting the upwardly moving liquid metal stream to the 5 Claims, 2 Drawing Figures June 23,1971 Germany P 2131 121.7
  • the invention relates to an electromagnetic conveyor trough of the type a refractory body which ascends at an angle from a liquid metal storage vessel, and which by the action of a travelling electromagnetic field conveys an open stream of liquid metal upwards to a pouring spout.
  • Electromagnetic conveyor troughs of this type are shown, for example, on in U.S. Pat. No. 3,554,670 and U.S. Pat. No. 3,612,720.
  • a travelling field is generated by a polyphase linear travelling field inductor which is preferably located underneath the body of the trough, with its lower end extending far enough towards or under the storage vessel so that the liquid metal is within range of the conveying action of the travelling field inductor when the liquid bath in the vessel is at the lowest level at which it is still intended to withdraw metal.
  • Conveyor troughs of this kind have been a great success in practice.
  • the positioning of the storage vessel and of the conveyor trough necessitated by the nature of the casting machine is often very unfavourable, particularly from the point of view of an efficient utilization of the available space.
  • the design of the inductor windings when the end pole is off-angled is somewhat complex.
  • the electromagnetic conveyor trough is provided in a side wall of the refractory body of the trough I and at least partly within the region of the penultimate or last inductor pole with an opening at the upper end of the trough from which a delivery channel extends to the side at an angle to the longitudinal direction of the trough.
  • a terminal wall preferably extends obliquely across the longitudinal direction of the trough, serving to deflect the liquid metal flowing up the trough towards the opening and into the delivery channel.
  • the mean dimension of the cross section of the flow-restricting orifice in the direction normal to the effective component of the electromagnetic travelling field should not exceed 80 percent, more particularly that it should not be more than percent of the mean width measured in the same direction of the trough section preceding the restricting orifice in the direction of flow.
  • FIG. 1 is a schematic view in plan (after removal of the cover) of an electromagnetic conveyor trough associated with a holding furnace representing the storage vessel and serving to supply a pressure casting machine with liquid metal.
  • FIG. 2 shows a longitudinal section of the embodiment of FIG. 1 taken on the line I I.
  • a furnace vessel 1 of a conventional holding furnace is attached to the ascending refractory body 2 of an electromagnetic conveyor trough 3.
  • a polyphase linear travelling field inductor 4 is provided underneath the body of the trough 3 with the lower end inductor 4 extending to below the refractory lining 5 of a furnace constitutinga storage vessel 1.
  • one of the side walls 6 -of the trough 2 has an opening 7 from which a lateral delivery channel 8 leads downwards roughly at right angles to the side, forming a pouring spout 9.
  • the upper end of the refractory body 2 of the trough is formed with a terminal wall 11 which extends obliquely across the longitudinal direction of the trough.
  • the trough 2 contains at a point which in the direction of flow precedes the lateral opening into the delivery channel a flow restricting orifice 12 preferably comprising a slide 13 for adjustably varying the cross section of the orifice.
  • the horizontal width of the orifice 12, i.e., in a direction normal to the effective conveying component of the travelling electromagnetic field is, as discussed above, smaller than the mean width of the trough section which in the direction of flow precedes the orifice 12.
  • the drawings indicate parts of a pressure casting machine, namely the platen 14, the filling bush l5 and the injector l6. Owing to the disposition of the delivery channel 8 at an angle to the longitudinal direction of the trough, it is possible to locate the mouth of the pouring spout 9 directly above the filling opening 17 of the filling bush 15. This arrangement ensures that by comparison with known metering electromagnetic conveyor troughs the liquid metal need travel only a minimum distance from the furnace vessel 1 to the pressure casting machine.
  • an electromagnetic conveyor trough having a refractory trough body which ascends at an angle from a liquid metal storage vessel, including a floor side walls bounding said floor and an electromagnetic field inductor located beneath and adjacent said floor, which inductor by the action of a travelling electromagnetic field conveys an open stream of liquid metal upwards
  • the trough body is provided in a side wall of at least partly within the region of the penultimate or last inductor pole, with an opening at the upper end of the side wall from which a delivery channel extends to the side at an angle to the longitudinal direction of the trough.
  • a terminal wall extends obliquely across the longitudinal direction of the trough for deflecting the stream of metal conveyed up the trough towards the opening of the delivery channel.
  • the mean dimension of the cross section of the flow restricting orifice in a direction normal to the effective component of the travelling electromagnetic field is not more than 80 percent and preferably not more than percent of the mean width measured in the same direction of the cross section of the trough preceding the flow restricting orifice'.
  • an electromagnetic conveyor trough having a trough body ascending at an angle to the horizontal with a floor and side walls bounding liquid metal flow and a travelling field inductor located beneath and adjacent said floor for producing a travelling electromagnetic field which causes liquid metal to move up said body, the improvement wherein one of said side walls is provided with an opening and including means defining a delivery channel connected to said opening for receiving liquid metal from said body, via said opening.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Control Of Conveyors (AREA)
US00259675A 1971-06-23 1972-06-05 Electromagnetic conveyor trough for conveying liquid metals Expired - Lifetime US3765798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712131121 DE2131121B2 (de) 1971-06-23 1971-06-23 Elektromagnetische foerderrinne zum transport von fluessigen metallen

Publications (1)

Publication Number Publication Date
US3765798A true US3765798A (en) 1973-10-16

Family

ID=5811561

Family Applications (1)

Application Number Title Priority Date Filing Date
US00259675A Expired - Lifetime US3765798A (en) 1971-06-23 1972-06-05 Electromagnetic conveyor trough for conveying liquid metals

Country Status (8)

Country Link
US (1) US3765798A (xx)
JP (1) JPS514500B1 (xx)
CH (1) CH527110A (xx)
DE (1) DE2131121B2 (xx)
FR (1) FR2143259B1 (xx)
GB (1) GB1334730A (xx)
IT (1) IT945608B (xx)
SE (1) SE372903B (xx)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568525A (en) * 1948-06-05 1951-09-18 Int Nickel Co Gas hood for casting machines
US3435992A (en) * 1966-03-11 1969-04-01 Tisdale Co Inc Pouring nozzle for continuous casting liquid metal or ordinary steel
US3558121A (en) * 1967-09-28 1971-01-26 Kloeckner Werke Ag Apparatus for treating of steel or other metals, especially for continuous casting
DE2061168A1 (de) * 1969-12-13 1971-06-24 Yaskawa Denki Seisakusho Kk Verfahren zum Steuern einer elektromagnetisch betaetigten Metallgiessvorrichtung
DE2061110A1 (de) * 1969-10-22 1971-06-24 Yaskawa Denki Seisakusho Kk Elektromagnetisch betaetigte Metallgiessvorrichtung
US3610600A (en) * 1968-02-15 1971-10-05 Aeg Elotherm Gmbh Continuously operable plant for degassing and pouring metal melts

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568525A (en) * 1948-06-05 1951-09-18 Int Nickel Co Gas hood for casting machines
US3435992A (en) * 1966-03-11 1969-04-01 Tisdale Co Inc Pouring nozzle for continuous casting liquid metal or ordinary steel
US3558121A (en) * 1967-09-28 1971-01-26 Kloeckner Werke Ag Apparatus for treating of steel or other metals, especially for continuous casting
US3610600A (en) * 1968-02-15 1971-10-05 Aeg Elotherm Gmbh Continuously operable plant for degassing and pouring metal melts
DE2061110A1 (de) * 1969-10-22 1971-06-24 Yaskawa Denki Seisakusho Kk Elektromagnetisch betaetigte Metallgiessvorrichtung
DE2061168A1 (de) * 1969-12-13 1971-06-24 Yaskawa Denki Seisakusho Kk Verfahren zum Steuern einer elektromagnetisch betaetigten Metallgiessvorrichtung

Also Published As

Publication number Publication date
IT945608B (it) 1973-05-10
FR2143259A1 (xx) 1973-02-02
FR2143259B1 (xx) 1977-12-23
CH527110A (de) 1972-08-31
JPS514500B1 (xx) 1976-02-12
GB1334730A (en) 1973-10-24
DE2131121A1 (xx) 1972-05-25
SE372903B (xx) 1975-01-20
DE2131121B2 (de) 1972-05-25

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