DE2128706A1 - Electro slag melting control - using molten slag resisting immersion electrodes - Google Patents

Electro slag melting control - using molten slag resisting immersion electrodes

Info

Publication number
DE2128706A1
DE2128706A1 DE19712128706 DE2128706A DE2128706A1 DE 2128706 A1 DE2128706 A1 DE 2128706A1 DE 19712128706 DE19712128706 DE 19712128706 DE 2128706 A DE2128706 A DE 2128706A DE 2128706 A1 DE2128706 A1 DE 2128706A1
Authority
DE
Germany
Prior art keywords
slag
electrodes
electro
immersion electrodes
molten
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.)
Pending
Application number
DE19712128706
Other languages
German (de)
Inventor
Jürgen Dipl Ing 5605 Hochdahl Florin Clemens Dr Ing 4018 Langenfeld Jungbluth Peter 4030 Ratingen Kneller
Original Assignee
Stahl und Rohrenwerk Reisholz GmbH, 4000 Dusseldorf
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 Stahl und Rohrenwerk Reisholz GmbH, 4000 Dusseldorf filed Critical Stahl und Rohrenwerk Reisholz GmbH, 4000 Dusseldorf
Priority to DE19712128706 priority Critical patent/DE2128706A1/en
Publication of DE2128706A1 publication Critical patent/DE2128706A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • 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
    • B22D11/186—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by using electric, magnetic, sonic or ultrasonic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Fluid Mechanics (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)

Abstract

The level of the molten metal bath in the mould during electro slag remelting is controlled by means of two immersion electrodes, which are connected with an indicator, an automatic controller and a current source. The electrodes consists of a material resistant to molten slag attack at the operating temp. The electrodes, which measure the difference in resistance of the melt between each other, permit improved process control.

Description

Verrichtung zum Messen und Regeln der Meiallbadhöhe in der Kokille Gegenstand das Erfindung ist eine Vorrichtung zum Messen und Hebeln der Metallbadhöhe in der Kokille, vorzugzweise beim oninnierlichen Umschmelzen nach dem ESU-Verfahren.Dedication of measuring and regulating the height of the molten bath in the mold The invention relates to a device for measuring and levering the height of the metal bath in the mold, preferably when remelting on an internal basis using the ESR process.

Bei dem bisher bekannten Umschmelzen nach dem Elektro-Schlacke-Umschmelzverfahren bestand der Nachteil, daf3 eine Messung der Metallbadhöhe mittels Temperaturmessung und Abschmelzraten zu ungenau ist und demnach fUr eine Regelung nur bedingt Verwendn finden kann.In the previously known remelting according to the electro-slag remelting process there was the disadvantage that the height of the metal bath could be measured by means of temperature measurement and the melting rate is too imprecise and is therefore only of limited use for a regulation Can be found.

Aufgabe der Erfindung ist eine Vorrichtung, die eine genaue Fixierung der Metallbadhöhe und damit die exakte Regelung des Kokillenvorschubs ermöglicht., Zur Lösung dieser Aufgabe wird erfindungsgemäß eine Vorrichtung vorgeschlagen, die aus zwei Tauchelektroden besteht, die gegen Schlackenangriff bei Temperaturen von 1800-2000 C unempfindlich sind; ferner au einem an sich bekannten Anzeigegerät, einer Regelautomatik und einer zusätzlichen Stromquelle.The object of the invention is a device that allows precise fixation the height of the metal bath and thus the exact regulation of the mold feed., To solve this problem, a device is proposed according to the invention, which consists of two immersion electrodes that protect against slag attack at temperatures of 1800-2000 C are insensitive; also on a display device known per se, an automatic control and an additional power source.

Das Arbeitsprinzip der erfindungsgemäßen Vorrichtung beruht auf der unterschiedlichen Leitfähigkeit des Mediums zwischen den beiden Elektroden.The working principle of the device according to the invention is based on different conductivity of the medium between the two electrodes.

Berührt die flüssige Metallschmelze beide Elektroden, so kommt es aufgrund des unterschiedlichen Widerstandes zu einer Spannungsänderung # U. Diese Spannungsänderung wird durch das Anzeigegerät aufgenommen und dient als Ausgangssignal für die Regelautomatik. Die Regelung selbst erfolgt anschließend durch dir zusätzliche Stromquelle.If the molten metal touches both electrodes, it happens due to the different resistance to a voltage change # U. This The voltage change is recorded by the display device and serves as an output signal for the automatic control. The regulation itself is then carried out by you additional Power source.

Die besonderen Vorteile der erfindungsgemäßen Vorrichtung liegen in der genzuen Steuerung der zugeführten Energie im Bad und beim ESU-Wickelschmelzen in der Steuerung des seit lichen Einbrachdes.The particular advantages of the device according to the invention are in the genzuen control of the energy supplied in the bath and when melting ESR in the control of the lateral collapse.

In der beigefügten Zeichnung ist eine mögliche Ausführung der erfindungegemäßen Vorrichtung schematisch dargestellt.In the accompanying drawing is a possible embodiment of the invention Device shown schematically.

In der Zeichnung sind dle Tauchelektroden (1 und 1') in das Schlackenbad (D) eingetaucht und sowohl mit einem Anzeigegerät (2), einer Regelautcmatik ()) und einer zusätzlichen Stromquelle (4) verbunden.In the drawing, the immersion electrodes (1 and 1 ') are in the slag bath (D) immersed and with both a display device (2), a control unit ()) and an additional power source (4) connected.

Die in der Kokille (7) aufsteigende Metallschmelze (6) stellt bei einer Beruhrung mit den in gewünschter Höhe eingestellten Tauchelektroden (1 und 1') einen Kontakt her, der aufgrund des beim flüssigen Metallbad geringeren Widerstandes, beispielsweise gegenüber einer flüssigen Schlacke oder eines anderen Mediums, zu einer Spannungsänderung führt.The molten metal (6) rising in the mold (7) provides touching the immersion electrodes set at the desired height (1 and 1 ') establishes a contact which, due to the lower resistance of the liquid metal bath, for example against a liquid slag or another medium leads to a voltage change.

Claims (2)

P a t e n t a n s p r ü c h e:P a t e n t a n s p r ü c h e: 1. Vorrichtung zur Messung und Regelung der Metallbadhöhe in der Kokille beim Elektro-Schlacke-Umschmelzverfahren, gekennzeichnet durch zwei Tauchelektroden (1 und 1 1), die mit einem Anzeigegerät (2), einer Regelautomatik (3) und einer Stromquelle (4) verbunden sind.1. Device for measuring and regulating the height of the metal bath in the mold in the electro-slag remelting process, characterized by two immersion electrodes (1 and 1 1), with a display device (2), an automatic control (3) and a Power source (4) are connected. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Tauchelektroden (1) bei Temperaturen von 1800-2000°C gegen Schlackenaligriff unempfindlich sind.2. Apparatus according to claim 1, characterized in that the immersion electrodes (1) are insensitive to slag attack at temperatures of 1800-2000 ° C. L e e r s e i t eL e r s e i t e
DE19712128706 1971-06-09 1971-06-09 Electro slag melting control - using molten slag resisting immersion electrodes Pending DE2128706A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712128706 DE2128706A1 (en) 1971-06-09 1971-06-09 Electro slag melting control - using molten slag resisting immersion electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712128706 DE2128706A1 (en) 1971-06-09 1971-06-09 Electro slag melting control - using molten slag resisting immersion electrodes

Publications (1)

Publication Number Publication Date
DE2128706A1 true DE2128706A1 (en) 1972-12-21

Family

ID=5810341

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712128706 Pending DE2128706A1 (en) 1971-06-09 1971-06-09 Electro slag melting control - using molten slag resisting immersion electrodes

Country Status (1)

Country Link
DE (1) DE2128706A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011054A1 (en) * 1978-10-31 1980-05-14 CENTRO SVILUPPO MATERIALI S.p.A. System for the control and regulation of electrodes in the electro-slag remelting process
FR2486651A1 (en) * 1980-07-09 1982-01-15 Kobe Steel Ltd METHOD AND APPARATUS FOR DETECTING THE SURFACE LEVEL OF MOLTEN METAL IN A MOLD
EP0131979A2 (en) * 1983-07-01 1985-01-23 Norddeutsche Affinerie Ag Method of regulating a molten metal bath level
FR2667003A1 (en) * 1990-09-21 1992-03-27 Siderurgie Fse Inst Rech Method and device for continuously measuring the thickness of liquid slag
CN110230975A (en) * 2019-06-20 2019-09-13 武汉钢铁有限公司 A kind of steel slag thickness measuring device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011054A1 (en) * 1978-10-31 1980-05-14 CENTRO SVILUPPO MATERIALI S.p.A. System for the control and regulation of electrodes in the electro-slag remelting process
FR2486651A1 (en) * 1980-07-09 1982-01-15 Kobe Steel Ltd METHOD AND APPARATUS FOR DETECTING THE SURFACE LEVEL OF MOLTEN METAL IN A MOLD
EP0131979A2 (en) * 1983-07-01 1985-01-23 Norddeutsche Affinerie Ag Method of regulating a molten metal bath level
EP0131979A3 (en) * 1983-07-01 1985-03-13 Norddeutsche Affinerie Ag Method of regulating a molten metal bath level
FR2667003A1 (en) * 1990-09-21 1992-03-27 Siderurgie Fse Inst Rech Method and device for continuously measuring the thickness of liquid slag
CN110230975A (en) * 2019-06-20 2019-09-13 武汉钢铁有限公司 A kind of steel slag thickness measuring device
CN110230975B (en) * 2019-06-20 2021-01-12 武汉钢铁有限公司 Steel slag layer thickness measuring device

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