US3883045A - Electronic conveyor for molten metal with elevated pouring tube - Google Patents

Electronic conveyor for molten metal with elevated pouring tube Download PDF

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Publication number
US3883045A
US3883045A US397328A US39732873A US3883045A US 3883045 A US3883045 A US 3883045A US 397328 A US397328 A US 397328A US 39732873 A US39732873 A US 39732873A US 3883045 A US3883045 A US 3883045A
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US
United States
Prior art keywords
trough
refractory
pouring
wall
electromagnetic
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
US397328A
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English (en)
Inventor
Hans Erwin 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 US3883045A publication Critical patent/US3883045A/en
Anticipated expiration legal-status Critical
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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
    • 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 improved electromagnetic trough for conveying and delivering molten metal or metal alloys, for example, for casting having a melting or holding furnace, an associated electromagnetic trough with a refractory upwardly sloping body, an electromagnetic travelling field inductor extending along its length for conveying the material up the trough, a wall extending across the trough body at the upper end thereof and closing the same, and a refractory tube located adjacent that wall at the upper end of the trough, passing through the floor for delivering molten metal with the upper end of the tube extending above the level of the floor to prevent dribble as the residual melt slowly flows away delayed by irregularities in the brickwork lining.
  • the invention relates to casting equipment for pouring metal or metal alloy melts of the type having a melting or holding furnace associated with an electromagnetic conveying trough or launder proceeding from the furnace vessel, the conveying trough having a refractory upwardly sloping body and an electromagnetic travelling field inductor extending along its length for conveying the material up the trough.
  • the windings of the travelling field inductor are divided into a component winding which is permanently energized at the bottom end of the trough, and which has the effect of lifting the melt to a predetermined point up the sloping trough, and into a second component winding which is energized only for the duration of the pour, and which is lo cated at the upper end of the trough.
  • It is therefore an object of the present invention to provide improved casting equipment comprising a melting or holding furnace and an associated electromagnetic conveying trough or launder integrated with a furnace vessel for pouring metal or metal alloy melts, in which dribbling of residual melt from the pouring spout at the upper end of the trough when a pour has been completed is substantially suppressed, and which also permits an even better metering precision during the casting operation to be achieved than is possible in conventional equipment.
  • these objects are achieved by forming the refractory body of the trough at its upper end with a wall extending across the width of the trough and thus closing the effective open cross section of the trough, and by pro viding, in proximity with this terminal wall, a refractory pouring tube which passes through the bottom of the trough and of which the upper end projects beyond the level of the adjacent floor of the trough, whereas its length is sufficient to ensure that the melt will issue from the pouring tube in an unbroken jet.
  • the travelling field inductor is located underneath the refractory body of the trough the floore of the trough is arranged from a point corresponding to the upper end of the travelling field inductor to continue sloping upwards in the direction towards the terminal wall.
  • a channel traverses the bottom of the trough for the reception of the pouring tube which is secured to the bottom of the trough at the upper end of the channel.
  • the pouring tube may be connected to a sleeve of refractory material, this sleeve being itself adhesively bonded to the upper end of the channel so that its upper end is flush with or projects above the neighboring level of the floor of the trough.
  • FIG. 1 is a schematic longitudinal section of casting equipment according to the invention.
  • FIG. 2 on a larger scale shows those particular parts of the equipment which concern the present invention.
  • a furnace vessel 3 (only partly shown in Figure 1) closed by cover plate 2 rests on foundations 1.
  • the body of the furnace is laterally connected to the ascending refractory body 4 of an electromagnetic conveying trough or launder.
  • the windings of the inductor are divided into a lower winding 7 which begins at the furnace vessel 3 and a second upper winding 8 which in continuation of the first extends to the upper end of the trough.
  • the connections 9 for feeding the windings enter where the two windings meet.
  • the floor 1 1 of the trough flattens out into roughly the horizontal.
  • the upper end of the body of the trough 4 is covered by bridge 12 connecting the sidewalls of the trough and consisting of a rammed refractory composition.
  • This bridge member has an opening closed by a box-like cover 13.
  • the refractory body 4 of the trough is provided at its upper end with a terminal wall 14 extending across the longitudinal axis of the trough. In proximity with this wall a refractory pouring tube 16 penetrates the bottom 15 of the trough.
  • This pouring equipment is intended for instance for pouring a melt into casting molds 17 which are conveyed to the equipment on a pouring conveyor indicated at 18 in Figure 1.
  • the pouring tube 16 of which the top 20 projects beyond the level of the neighboring floor 11 of the trough is embraced by a sleeve 22.
  • the pouring tube 16 and the sleeve 22 are contained in a channel 23 which traverses the bottom 15 of the trough, the top of the sleeve being roughly flush with the adjacent surface 11' of the floor of the trough.
  • the tube and its sleeve are bonded for instance adhesively to the bottom 15 only at the top of the channel 23 so that the development of thermal stresses between the bottom 15 of the trough and the pouring tube 16 is substantially avoided.
  • Below the sleeve 22 the wall of the channel is formed by a refractory tube 24 which limits the extent of the rammed composition forming the bottom of the trough, and
  • the described pouring equipment is operated as follows:
  • the individual pour is initiated by the upper component winding 8 being connected to voltage, and thereby causing the column of melt extending part of the way up the trough to be propelled further to the upper end of the trough where it can flow out through the pouring tube 16.
  • the intensity of the travelling field produced by the inductor is so controlled that the propelling power of the trough exceeds the maximum rate at which the melt can leave through the pouring tube 16. Under these conditions the exposed surface of the melt will quite soon, i.e. usually immediately after pouring begins, assume a position in the trough such as that indicated by the line 28, the depth of the layer depending primarily upon the performance of the trough. Since the height h of the melt surface 28 above the upper end of the pouring tube 16 (cf.
  • the length of the pouring tube is so chosen according to the nature of the melt that the teeming melt will leave the bottom end of the tube 16 in the form of a continuous jet.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Tunnel Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US397328A 1972-09-30 1973-09-14 Electronic conveyor for molten metal with elevated pouring tube Expired - Lifetime US3883045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2248052A DE2248052C2 (de) 1972-09-30 1972-09-30 Gießvorrichtung zum Vergießen von flüssigem Metall oder Metallegierungen mit einem Schmelz- oder Warmhalteofen und einer elektromagnetischen Förderrinne

Publications (1)

Publication Number Publication Date
US3883045A true US3883045A (en) 1975-05-13

Family

ID=5857874

Family Applications (1)

Application Number Title Priority Date Filing Date
US397328A Expired - Lifetime US3883045A (en) 1972-09-30 1973-09-14 Electronic conveyor for molten metal with elevated pouring tube

Country Status (8)

Country Link
US (1) US3883045A (xx)
JP (1) JPS5220175B2 (xx)
CH (1) CH564993A5 (xx)
DE (1) DE2248052C2 (xx)
FR (1) FR2201151B1 (xx)
GB (1) GB1402815A (xx)
IT (1) IT996219B (xx)
SE (1) SE392678B (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444378A (en) * 1982-08-11 1984-04-24 Reese Thurston F Apparatus for separating slag from a molten metal
US4676296A (en) * 1984-10-05 1987-06-30 Fry's Metals Limited Apparatus for casting metal alloys having low melting points
US5449395A (en) * 1994-07-18 1995-09-12 Kennecott Corporation Apparatus and process for the production of fire-refined blister copper
US20110168273A1 (en) * 2008-08-07 2011-07-14 Hans-Uwe Morgenstern Method and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically-conducting liquids and melts
US20110174406A1 (en) * 2008-08-07 2011-07-21 Hans-Uwe Morgenstern Methods and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically conductive liquids and melts
CN102744257A (zh) * 2012-07-12 2012-10-24 湖南金龙国际铜业有限公司 紫杂铜连铸连轧制杆采用的装置及工艺

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60108158A (ja) * 1983-11-17 1985-06-13 Shinko Electric Co Ltd 溶湯供給装置
WO1989000469A1 (en) * 1987-07-09 1989-01-26 Toshiba Kikai Kabushiki Kaisha Molten metal feeder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044499A (en) * 1959-12-17 1962-07-17 Stoecker & Kunz G M B H Refractory ceramic pipe for fusible material
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
US3754634A (en) * 1968-09-14 1973-08-28 Aeg Elotherm Gmbh Electromagnetic conveyor for molten metal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044499A (en) * 1959-12-17 1962-07-17 Stoecker & Kunz G M B H Refractory ceramic pipe for fusible material
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
US3754634A (en) * 1968-09-14 1973-08-28 Aeg Elotherm Gmbh Electromagnetic conveyor for molten metal

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444378A (en) * 1982-08-11 1984-04-24 Reese Thurston F Apparatus for separating slag from a molten metal
US4676296A (en) * 1984-10-05 1987-06-30 Fry's Metals Limited Apparatus for casting metal alloys having low melting points
US5449395A (en) * 1994-07-18 1995-09-12 Kennecott Corporation Apparatus and process for the production of fire-refined blister copper
USRE36598E (en) * 1994-07-18 2000-03-07 Kennecott Holdings Corporation Apparatus and process for the production of fire-refined blister copper
US20110168273A1 (en) * 2008-08-07 2011-07-14 Hans-Uwe Morgenstern Method and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically-conducting liquids and melts
US20110174406A1 (en) * 2008-08-07 2011-07-21 Hans-Uwe Morgenstern Methods and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically conductive liquids and melts
US8343416B2 (en) 2008-08-07 2013-01-01 Tmt Tapping-Measuring-Technology Gmbh Methods and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically conductive liquids and melts
US8696976B2 (en) 2008-08-07 2014-04-15 Tmt Tapping-Measuring-Technology Gmbh Method and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically-conducting liquids and melts
CN102744257A (zh) * 2012-07-12 2012-10-24 湖南金龙国际铜业有限公司 紫杂铜连铸连轧制杆采用的装置及工艺

Also Published As

Publication number Publication date
IT996219B (it) 1975-12-10
GB1402815A (en) 1975-08-13
JPS4972133A (xx) 1974-07-12
SE392678B (sv) 1977-04-18
DE2248052A1 (xx) 1973-03-15
FR2201151A1 (xx) 1974-04-26
JPS5220175B2 (xx) 1977-06-01
CH564993A5 (xx) 1975-08-15
FR2201151B1 (xx) 1977-03-11
DE2248052C2 (de) 1973-09-27
DE2248052B1 (de) 1973-03-15

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