EP2760608B1 - System und verfahren zur überwachung eines formflussverbrauchs - Google Patents

System und verfahren zur überwachung eines formflussverbrauchs Download PDF

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Publication number
EP2760608B1
EP2760608B1 EP12834726.7A EP12834726A EP2760608B1 EP 2760608 B1 EP2760608 B1 EP 2760608B1 EP 12834726 A EP12834726 A EP 12834726A EP 2760608 B1 EP2760608 B1 EP 2760608B1
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EP
European Patent Office
Prior art keywords
mold flux
intermediate hopper
mold
hopper
transfer
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Active
Application number
EP12834726.7A
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English (en)
French (fr)
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EP2760608A4 (de
EP2760608A1 (de
Inventor
Todd ORSI
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Stollberg Inc
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Stollberg Inc
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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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/108—Feeding additives, powders, 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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/007—Continuous casting of metals, i.e. casting in indefinite lengths of composite ingots, i.e. two or more molten metals of different compositions being used to integrally cast the ingots
    • 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
    • B22D11/165—Controlling or regulating processes or operations for the supply of casting powder

Definitions

  • This application discloses an invention which is related, generally and in various embodiments, to the metal casting field wherein mold flux consumption is monitored.
  • a mold flux which may be a powder or granular material, onto the top of a shapes mold during the continuous casting of a molten metal, typically steel, as shown in US Patent No. 6,474,398 .
  • the mold flux turns into slag when sufficiently heated by the molten steel.
  • the mold flux being fed is in the form of a granulated powder from a bulk source such as a bag.
  • the mold flux is fed by way of a vacuum from the bulk source to an intermediate feeder hopper.
  • a constant level is maintained within the intermediate hopper with a proximity sensor which measures the level of mold flux within the hopper.
  • US 6,474,398 discloses a continuous casting apparatus including a dispensing assembly for introducing granular mold flux onto the top of a slab being cast within a continuous casting mold, a delivery apparatus for feeding granular mold flux from an intermediate hopper to the top of a slab being cast, wherein the delivery apparatus has at least one delivery tube assembly interconnected with the intermediate hopper, with a mechanism for controlling the flow rate of the mold flux through the delivery tube assembly.
  • US 2010/017321 discloses material delivery systems and methods. The material delivery system includes a delivery vessel and at least one dispense mechanism outlet.
  • the method includes dispensing material from a delivery vessel, wherein a metering device provides a metric indicative of the dispensed material with respect to at least a unit, and delivering the metered material to at least one unit via at least one dispense mechanism outlet of the delivery vessel coupled to the at least one unit.
  • FIG. 1 illustrates various embodiments of a system 10 for measuring mold flux consumption in a continuous casting operation; common parts will be represented by the same reference numeral.
  • the continuous casting operation is for the continuous casting of any shape, from molten metal 15, which in the illustrated embodiment is molten steel.
  • Mold flux 11 in granular or powder form is fed onto the top of the shapes mold 13.
  • the shapes mold can be, by way of example, a slab mold.
  • the mold flux 11 becomes a slag when sufficiently heated by the molten steel.
  • the system of various embodiments is indicated generally by reference number 10.
  • the system generally includes four major components: a transfer apparatus 12; an intermediate hopper 14, a feed control apparatus 16, and a delivery apparatus 18.
  • the transfer apparatus 12 transfers powder mold flux from a bulk source 20 to the intermediate hopper 14.
  • the bulk source of powder mold flux 20 may be, for example, a large bag or barrel.
  • After the delivery apparatus 18 feeds powder mold flux 11 from the intermediate hopper to the top of the mold.
  • the transfer apparatus includes a vacuum 22 having an inlet port 24 to which one end 26 of a flexible suction tube 28 is connected. The other end 30 of flexible suction tube 28 extends into the bulk source 20.
  • Vacuum 22 has an outlet at the bottom for transferring mold flux to the intermediate hopper 14.
  • the intermediate hopper 14 has a fitting on the bottom that extends into the top of the feed hopper 31.
  • the delivery apparatus 18 includes a feed hopper 31 and feeds mold flux from a pair (could be up to six outlets) of outlet ports 32, 34 of the feed hopper 31 to the top of a mold. There is no contact between the intermediate hopper 14 and feed hopper 31 as this would give a false weight.
  • the delivery apparatus 18 includes a pair (could be up to six delivery tubes) of delivery tubes 36, 40 each having one end connectable to an outlet port 32, 34, and the other end having anywhere from one to six feed heads 46 (two shown in the illustrated embodiment) disposed above a mold or series of molds.
  • the mold flux is pneumatically fed from the feed hopper 31 with 1 inch venturi pumps 41 which are operatively connected to the outlet ports 32, 34.
  • the number of ports or 1 inch venturi pumps could vary depending on the type of continuous casting machine or shapes cast. For example: If the continuous caster is a small 6-strand billet machine, there would be a total of six molds, each mold being the size of the cast product. This would require six 1 inch venturi pumps and feed lines.
  • the control apparatus 16 includes at least one load cell 42 supporting the intermediate hopper 14 for weighing the intermediate hopper 14 and its contents of mold flux over a period of time for measuring the real time consumption of mold flux.
  • the at least one load cell 42 preferably includes a plurality of load cells 42, each supporting a side of the intermediate hopper 14. There are three load cells 42 in this embodiment. Only two load cells 42, however, can be seen in Fig. 1 .
  • the control apparatus further includes a programmable logic controller (PLC) 44 ( Fig. 2 ) receiving input from the load cells for controlling the operation of the vacuum 22.
  • PLC programmable logic controller
  • the PLC 44 causes the vacuum 22 to turn on, thus causing mold flux to feed into the intermediate hopper 14, based on a predetermined weight of the feed bin as compared to the consumption or loss of weight of mold flux calculated using the output of the at least one load cell 42.
  • the use of PLC 44 allows the ability to record daily mold flux consumption files.
  • any suitable processor having the appropriate software such as FACTORY TALK software may be used.
  • it may be desirable to measure mold flux consumption volumetrically. The rate of which the mold flux is delivered onto the mold can be adjusted by the operator using an operator control screen 48 on the PLC 44 that can be used for adjusting the feed rate.
  • the operator control screen 48 is a touch screen display that gives the operator a scale of 0 - 100. This scale represents the mA voltage sent from the PLC 44 to the current to pressure transducers that are located in the feed hopper.
  • the rate of which the mold flux is delivered onto the mold can be adjusted by the operator by a handheld wireless controller 50 in communication with a receiver 52 on PLC 44.
  • the wireless controller 50 can be used to control the feed rate instead of the operator control screen 48 on the PLC display.

Claims (11)

  1. Vorrichtung zur Überwachung des Gießpulververbrauchs und zur Abgabe von Gießpulver an eine Stranggießform, umfassend:
    eine Überführungsvorrichtung (12), um Gießpulver von einem Schüttgutbehälter (20) in einen Puffertrichter (14) umzuladen;
    eine Zufuhrsteuervorrichtung (16) zum Steuern der Übertragung des Gießpulvers von der Überführungsvorrichtung (12) zum Puffertrichter (14), wobei die Zufuhrsteuervorrichtung (16) mindestens eine Wägezelle (42) aufweist, um den Puffertrichter (14) und das Gießpulver im Puffertrichter (14) über einen Zeitraum hinweg zu wiegen, wobei die Zufuhrsteuervorrichtung (16) ferner eine Steuerung umfasst, welche die Eingaben von mindestens einer Wägezelle (42) empfängt und die Operation der Überführungsvorrichtung (12) anhand der Eingabe von mindestens einer Wägezelle (42) steuert; und
    eine Abgabevorrichtung (18), um das Gießpulver aus dem Puffertrichter (14) aufzunehmen und das Gießpulver an eine Gießform abzugeben, wobei die Abgabevorrichtung (18) einen für die Aufnahme von Gießpulver aus dem Puffertrichter (14) ausgelegten Beschickungstrichter (31) umfasst, sowie mindestens einen Auslass und ein mit jedem Auslass verbundenes Ablassrohr, um der Gießform pneumatisch Gießpulver zuzuführen, wobei zwischen dem Puffertrichter (14) und dem Beschickungstrichter (31) kein Kontakt besteht.
  2. Vorrichtung gemäß Anspruch 1,
    wobei zur Überführungsvorrichtung (12) ein Vakuum (22) gehört, um das Gießpulver vom Schüttgutbehälter (20) in den Puffertrichter (14) umzuladen; wobei die Zufuhrsteuervorrichtung (16) das Vakuum (22) steuert.
  3. Vorrichtung gemäß Anspruch 2,
    wobei die Überführungsvorrichtung (12) ferner ein Ventil umfasst, das zwischen einer ersten geschlossenen Position und einer zweiten offenen Position geschaltet werden kann, wobei es in der ersten Position verhindert, dass Gießpulver bei eingeschaltetem Vakuum (22) in den Puffertrichter (14) gelangt und in der zweiten Position ermöglicht, dass Gießpulver bei ausgeschaltetem Vakuum (22) in den Puffertrichter (14) gelangt.
  4. Vorrichtung gemäß Anspruch 3,
    wobei das Ventil ein Klappenventil (43) mit Gewichtsausgleich ist.
  5. Vorrichtung gemäß Anspruch 1,
    wobei die Steuerung eine speicherprogrammierbare Steuerung (44) ist.
  6. Vorrichtung gemäß Anspruch 5,
    wobei die speicherprogrammierbare Steuerung (44) die Überführungsvorrichtung (12) zum Übertragen von Gießpulver in den Schüttgutbehälter (20) einschalten und die Überführungsvorrichtung (12) zum Übertragen von Gießpulver von der Überführungsvorrichtung (12) in den Puffertrichter (14) ausschalten kann.
  7. Vorrichtung gemäß Anspruch 6,
    wobei zur Überführungsvorrichtung (12) ein Vakuum (22) gehört, um das Gießpulver vom Schüttgutbehälter (20) in den Puffertrichter (14) umzuladen; wobei die speicherprogrammierbare Steuerung (44) das Vakuum (22) ein- und ausschalten kann.
  8. Vorrichtung gemäß Anspruch 5,
    wobei die speicherprogrammierbare Steuerung (44) einen vom Bediener kontrollierbaren berührungsempfindlichen Bildschirm (48) umfasst, der für den Empfang von Bediener-Eingaben zum Steuern der Gießpulver-Beschickungsrate eingestellt werden kann.
  9. Vorrichtung gemäß Anspruch 5,
    wobei die speicherprogrammierbare Steuerung (44) einen Empfänger (52) und eine mit dem Empfänger in Verbindung stehende drahtlose Fernbedienung (50) umfasst, die für den Empfang von Bediener-Eingaben zum Steuern der Gießpulver-Beschickungsrate eingestellt werden kann.
  10. Vorrichtung gemäß Anspruch 1,
    wobei jeder Auslass eine Venturi-Pumpe umfasst.
  11. Verfahren zur Überwachung des Gießpulververbrauchs und zur Abgabe von Gießpulver an eine Stranggießform, umfassend:
    Gießpulver unter Verwendung einer Überführungsvorrichtung (12) von einem Schüttgutbehälter (20) in einen Puffertrichter (12) umladen;
    den Puffertrichter (14) und das Gießpulver im Puffertrichter (14) über einen Zeitraum hinweg wiegen;
    den Betrieb der Überführungsvorrichtung (12) basierend auf dem Gewicht des Puffertrichters (14) und des Gießpulvers im Puffertrichter (14) steuern;
    Gießpulver vom Puffertrichter (14) an den Beschickungstrichter (31) übertragen, wobei zwischen dem Puffertrichter (14) und dem Beschickungstrichter (31) kein Kontakt besteht; und
    das Gießpulver pneumatisch vom Beschickungstrichter (31) zur Gießform fördern.
EP12834726.7A 2011-09-29 2012-10-01 System und verfahren zur überwachung eines formflussverbrauchs Active EP2760608B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161540616P 2011-09-29 2011-09-29
PCT/US2012/058285 WO2013049807A1 (en) 2011-09-29 2012-10-01 System and method for monitoring mold flux consumption

Publications (3)

Publication Number Publication Date
EP2760608A1 EP2760608A1 (de) 2014-08-06
EP2760608A4 EP2760608A4 (de) 2015-07-15
EP2760608B1 true EP2760608B1 (de) 2019-04-03

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EP12834726.7A Active EP2760608B1 (de) 2011-09-29 2012-10-01 System und verfahren zur überwachung eines formflussverbrauchs

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US (2) US20130081777A1 (de)
EP (1) EP2760608B1 (de)
ES (1) ES2733680T3 (de)
TR (1) TR201909665T4 (de)
WO (1) WO2013049807A1 (de)

Cited By (1)

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EP3907019A1 (de) 2020-05-05 2021-11-10 Primetals Technologies Austria GmbH Fördern von giesspulver in eine kokille

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CN103341604B (zh) * 2013-06-26 2015-07-15 湖南镭目科技有限公司 一种连铸结晶器自动加渣控制的方法、系统及装置
GB201517130D0 (en) * 2015-09-28 2015-11-11 Imerys S A A flux feeding apparatus and method
CN105328149B (zh) * 2015-10-29 2017-10-03 芜湖新兴铸管有限责任公司 保护渣自动加料装置
KR101913318B1 (ko) 2016-04-05 2018-10-30 자동차부품연구원 브레이크 디스크 및 브레이크 디스크 제조 방법
US10620062B2 (en) 2017-10-23 2020-04-14 Deborah D. L. Chung Cement-based material systems and method for self-sensing and weighing
WO2022013216A1 (en) * 2020-07-15 2022-01-20 Imertech Sas Flux delivery for continuous casting
CN114130971B (zh) * 2021-12-10 2023-08-04 湖南科技大学 基于连铸机加渣机理的渣厚自适应控制方法及装置

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Also Published As

Publication number Publication date
ES2733680T3 (es) 2019-12-02
TR201909665T4 (tr) 2019-07-22
US20160243610A1 (en) 2016-08-25
EP2760608A4 (de) 2015-07-15
WO2013049807A1 (en) 2013-04-04
US20130081777A1 (en) 2013-04-04
EP2760608A1 (de) 2014-08-06

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