US3706399A - Means for regulating the flow-rate of melt from a container - Google Patents

Means for regulating the flow-rate of melt from a container Download PDF

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Publication number
US3706399A
US3706399A US34988A US3706399DA US3706399A US 3706399 A US3706399 A US 3706399A US 34988 A US34988 A US 34988A US 3706399D A US3706399D A US 3706399DA US 3706399 A US3706399 A US 3706399A
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US
United States
Prior art keywords
container
melt
level
ladle
tapping
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
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US34988A
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English (en)
Inventor
Yngve Sundberg
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ABB Norden Holding AB
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ASEA AB
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Filing date
Publication date
Application filed by ASEA AB filed Critical ASEA AB
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Publication of US3706399A publication Critical patent/US3706399A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • 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

  • the present invention relates to a means for regulating the flow-rate of melt from a container, comprising a multiphase electromagnetic valve arranged around an outlet in the container.
  • the invention is characterized in that the outlet is arranged in the form of a pipe leading from the lower part of the container and opening out at a level considerably above the bottom of the container and that the electromagnetic valve is arranged around the pipe and its coilor coils arranged to be fed with a voltage, the value of which is controlled by a transducer for a certain melt condition in the container, such as a level indicator in a casting mould or casting ladle or indicator for the weight of an intermediate ladle or the like intended to be filled from the container.
  • a transducer for a certain melt condition in the container such as a level indicator in a casting mould or casting ladle or indicator for the weight of an intermediate ladle or the like intended to be filled from the container.
  • FIG. 1 shows tapping from a container where the tapping is regulated by a level-indicator.
  • FIG. 2 shows regulation by a transducer for weight in an intermediate ladle or container.
  • FIG. 1 shows a ladle l 1 (or furnace) having an opening 12 in the lower part of the bowl of the ladle.
  • a pipe 13 is connected to the opening at a certain upward angle in relation to the horizontal plane (or bottom surface).
  • a so-called electromagnetic valve (14-15) or pump provided with at least one, two, three or multi-phase fed coils 14 around which may be arranged an iron stack or an ironcore 15.
  • the electromagnetic pump or valve is of the type known, for example from the'above-mentioned patent specification, and
  • the ladle may possibly be provided with several pipes for multi-run casting, each one being surrounded by its own electromagnetic valve.
  • the melt from the ladle 11 is to be poured through the pipe 13 and by way of an intermediate ladle or tapping box 16 or in some other way into a casting mould 17, another ladle, etc., for example in connection with continuous casting (see FIG. 1);
  • the tapping from the ladle should, for example, be regulated so that all the time a certain value is obtained during the casting, such as constant level in the mould 17 or constant weight in the intermediate ladle 16, or a value which varies in a certain way during the casting process, such as varying desired value for the weight of the intermediate ladle depending on the actual level in the mould 17.
  • the level in the mould l7 may be sensed in many ways, known per se, such as by means of a contact level gauge 18, an X-ray gauge, a photocell-controlled gauge, etc., and the output signal from this gauge 18 is supplied to a regulating device 19, the output signal (amplified) of which controls a voltage-regulating device 20 such as a regulator-transformer, an induction regulator, a potentiometer, etc., to feed multiphase alternating current to the coil or coils 14 of the electromagnetic valve.
  • a contact level gauge 18, an X-ray gauge, a photocell-controlled gauge, etc. the output signal (amplified) of which controls a voltage-regulating device 20 such as a regulator-transformer, an induction regulator, a potentiometer, etc.
  • FIG. 2 shows a weight indicator 21 for the intermediate ladle 16.
  • the output signal (weight of ladle 16 plus temporary melt content) of the indicator 21 is supplied to a regulating device, as in the case of the level gauge according to FIG. 1.
  • a phase sequence and voltage is selected in the valve 14-15 so that a force is obtained towards the container 11 which counteracts the force of the melt itself.
  • the weight indicator 21 may be of known type, such as a magneto-strictive transducer of the type shown in British Patent No. 767,791.
  • the angle a between the pipe 13 and a vertical axis should lie between 10 and 30, suitably about l223, and the highest level of the pipe should be located at approximately half the maximum level of the melt.
  • the force should operate downwardly during the start of the tapping and then be gradually reduced. It is then al- I060] I Ol 19 tered and increased if constant level is to be obtained at the measuring device 18 in the mould 17.
  • Length of valve 3.6 m Angle a frequency for thre the coil 14 50 l-lz. r Apparent power at the coil 2,720 kVA.
  • Active power 450 kW. Voltage (main) 372 V. v
  • main 372 V. v
  • tapping can be stopped in the electromagnetic valve.
  • Means'for regulating the speed of melt flowing out 1 of a container comprising a multiphase electromagsaid valve pump being arranged. around the tube and its coil being fed with multi-phase AC voltage with switchable phase sequence, the direction of the phase sequence being controlled from the output from measuring means for measuring the amount of melt in a device to be filled from the container.
  • Means according to claim 1 characterized in that the voltage is arranged to be regulated as to phase sequence in such a way that the resultant force of the valve on the melt can be varied from a direction towards the melt in the container to a direction from the container, for example to effect the desired tapping regardless of the level in the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
US34988A 1969-05-21 1970-05-06 Means for regulating the flow-rate of melt from a container Expired - Lifetime US3706399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE07147/69A SE357686B (enrdf_load_html_response) 1969-05-21 1969-05-21

Publications (1)

Publication Number Publication Date
US3706399A true US3706399A (en) 1972-12-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US34988A Expired - Lifetime US3706399A (en) 1969-05-21 1970-05-06 Means for regulating the flow-rate of melt from a container

Country Status (6)

Country Link
US (1) US3706399A (enrdf_load_html_response)
JP (1) JPS4926171B1 (enrdf_load_html_response)
DE (2) DE2023901B2 (enrdf_load_html_response)
FR (1) FR2047571A5 (enrdf_load_html_response)
GB (1) GB1302108A (enrdf_load_html_response)
SE (1) SE357686B (enrdf_load_html_response)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942577A (en) * 1973-07-18 1976-03-09 Toyota Jidosha Kogyo Kabushiki Kaisha Method and apparatus for controlling electromagnetic casting
US3991263A (en) * 1973-09-03 1976-11-09 Allmanna Svenska Elektriska Aktiebolaget Means for tapping
US4171707A (en) * 1977-04-25 1979-10-23 Ben-Gurion University Of The Negev, Research And Development Authority Method and apparatus for controlling the flow of liquid metal
US4415017A (en) * 1981-06-26 1983-11-15 Olin Corporation Control of liquid-solid interface in electromagnetic casting
US4446908A (en) * 1980-01-11 1984-05-08 Olin Corporation Infrared imaging for electromagnetic casting
US4522247A (en) * 1980-01-11 1985-06-11 Olin Corporation Infrared imaging for electromagnetic casting
US4828460A (en) * 1986-08-13 1989-05-09 Toshiba Kikai Kabushiki Kaisha Electromagnetic pump type automatic molten-metal supply apparatus
US4891822A (en) * 1986-06-12 1990-01-02 Paul Metz Inductor apparatus for metal treatment
US4990059A (en) * 1988-12-19 1991-02-05 Aluminum Company Of America Method for filtering liquid-phase metals
US5042969A (en) * 1987-05-05 1991-08-27 Todnem Odd Pump or a control valve for molten metal
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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841012Y2 (ja) * 1975-04-18 1983-09-16 株式会社神戸製鋼所 ヨウトウキヨウキユウソウチ
DE2617263A1 (de) * 1976-04-15 1977-10-20 Mannesmann Ag Verfahren und anlage zum vollkontinuierlichen vergiessen von stahl in stranggiessanlagen
DE3427940C2 (de) * 1984-07-28 1995-01-19 Friedhelm Prof Dr Ing Kahn Verfahren und Vorrichtungen zur Steuerung einer Raumausfüllung durch Metallschmelzen mit Hilfe von elektromagnetischen Feldern
NO20181185A1 (en) * 2018-09-11 2020-03-12 Norsk Hydro As Casting Equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224982A (en) * 1939-03-10 1940-12-17 Whitehall Patents Corp Method of die casting by electrical induction
GB712672A (en) * 1949-05-26 1954-07-28 Birlec Ltd Apparatus for discharging molten metal from a receptacle or container
GB728145A (en) * 1952-06-16 1955-04-13 Asea Ab Electromagnetic means for regulating the flow of molten metal through a tubular channel
US2743492A (en) * 1953-04-20 1956-05-01 Allegheny Ludlum Steel Apparatus for controlling the flow of molten metal
US3486660A (en) * 1965-10-05 1969-12-30 Siderurgie Fse Inst Rech Method and apparatus for regulating the flow of molten metal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224982A (en) * 1939-03-10 1940-12-17 Whitehall Patents Corp Method of die casting by electrical induction
GB712672A (en) * 1949-05-26 1954-07-28 Birlec Ltd Apparatus for discharging molten metal from a receptacle or container
GB728145A (en) * 1952-06-16 1955-04-13 Asea Ab Electromagnetic means for regulating the flow of molten metal through a tubular channel
US2743492A (en) * 1953-04-20 1956-05-01 Allegheny Ludlum Steel Apparatus for controlling the flow of molten metal
US3486660A (en) * 1965-10-05 1969-12-30 Siderurgie Fse Inst Rech Method and apparatus for regulating the flow of molten metal

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942577A (en) * 1973-07-18 1976-03-09 Toyota Jidosha Kogyo Kabushiki Kaisha Method and apparatus for controlling electromagnetic casting
US3991263A (en) * 1973-09-03 1976-11-09 Allmanna Svenska Elektriska Aktiebolaget Means for tapping
US4171707A (en) * 1977-04-25 1979-10-23 Ben-Gurion University Of The Negev, Research And Development Authority Method and apparatus for controlling the flow of liquid metal
US4446908A (en) * 1980-01-11 1984-05-08 Olin Corporation Infrared imaging for electromagnetic casting
US4522247A (en) * 1980-01-11 1985-06-11 Olin Corporation Infrared imaging for electromagnetic casting
US4415017A (en) * 1981-06-26 1983-11-15 Olin Corporation Control of liquid-solid interface in electromagnetic casting
US4891822A (en) * 1986-06-12 1990-01-02 Paul Metz Inductor apparatus for metal treatment
US4828460A (en) * 1986-08-13 1989-05-09 Toshiba Kikai Kabushiki Kaisha Electromagnetic pump type automatic molten-metal supply apparatus
US5042969A (en) * 1987-05-05 1991-08-27 Todnem Odd Pump or a control valve for molten metal
US4990059A (en) * 1988-12-19 1991-02-05 Aluminum Company Of America Method for filtering liquid-phase metals
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

Also Published As

Publication number Publication date
JPS4926171B1 (enrdf_load_html_response) 1974-07-06
DE2023901A1 (de) 1971-04-15
FR2047571A5 (enrdf_load_html_response) 1971-03-12
SE357686B (enrdf_load_html_response) 1973-07-09
DE7018265U (de) 1974-07-04
GB1302108A (enrdf_load_html_response) 1973-01-04
DE2023901B2 (de) 1971-12-09

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