DE19808998B4 - Method and device for early breakthrough detection in a continuous casting plant - Google Patents

Method and device for early breakthrough detection in a continuous casting plant Download PDF

Info

Publication number
DE19808998B4
DE19808998B4 DE19808998A DE19808998A DE19808998B4 DE 19808998 B4 DE19808998 B4 DE 19808998B4 DE 19808998 A DE19808998 A DE 19808998A DE 19808998 A DE19808998 A DE 19808998A DE 19808998 B4 DE19808998 B4 DE 19808998B4
Authority
DE
Germany
Prior art keywords
temperature
mold
measurement
strand
continuous casting
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 - Fee Related
Application number
DE19808998A
Other languages
German (de)
Other versions
DE19808998A1 (en
Inventor
Jürgen Dr. Adamy
Martin KÖNEMUND
Uwe STÜRMER
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.)
Siemens AG
Original Assignee
Siemens AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7859539&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE19808998(B4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE19808998A priority Critical patent/DE19808998B4/en
Priority to EP99916748A priority patent/EP1060046B1/en
Priority to US09/623,609 priority patent/US20030150584A1/en
Priority to AT99916748T priority patent/ATE219978T1/en
Priority to PCT/DE1999/000445 priority patent/WO1999044772A1/en
Priority to DE59901923T priority patent/DE59901923D1/en
Publication of DE19808998A1 publication Critical patent/DE19808998A1/en
Publication of DE19808998B4 publication Critical patent/DE19808998B4/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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

Abstract

A device and method for the early detection of a rupture in a continuous casting plant, in which liquid metal is cast into a chill (2) and is withdrawn from the chill (2) in the form of a billet (1), the temperature of the chill (2) being measured, and the temperature of the chill (2) being simultaneously presented with reference to the location at which the temperature was measured and the time over which the temperature was measured.

Description

Die Durchbruchfrüherkennung beim Stahl-Strangguß dient dazu, Fehlstellen in der Strangschale frühzeitig zu erkennen. Fehlstellen sind Kleber und Rißstellen und können zu einem Durchbruch der Strangschale führen, was mit hohem wirtschaftlichen Schaden und Produktionsausfall verbunden ist.The Breakout prediction in steel casting to detect defects in the strand shell early. defects are glue and cracks and can lead to a breakthrough of the strand shell, resulting in high economic Damage and loss of production is connected.

Aus der Offenlegungsschrift DE 34 23 475 A1 ist ein Verfahren und eine Einrichtung zum Stranggießen von flüssigem Metall bekannt. Ferner ist eine Messung eines Temperaturprofils der Stranggieß-Kokillenwand mittels Thermoelementen bekannt, welche in gestuften Abständen, beginnend am Kokilleneingangsbereich und endend im Kokillenendbereich, angeordnet sind. Der Temperaturverlauf wird mittels eines Plotters dargestellt.From the publication DE 34 23 475 A1 For example, a method and apparatus for continuous casting of liquid metal is known. Furthermore, a measurement of a temperature profile of the continuous casting mold wall by means of thermocouples is known, which are arranged at graduated intervals, starting at the mold inlet area and ending in Kokillenendbereich. The temperature profile is displayed by means of a plotter.

Ein kontinuierlicher Strangguß-Prozeß ist in 1 dargestellt. Dargestellt sind eine Gießpfanne 4, eine Verteilerrinne 3, eine Kokille 2 mit Thermoelementen 8 zur Temperaturerfassung, ein Strang 1, Führungsrollen 5, ein Schneidegerät 6 und eine Bramme 7. Die Anordnung der Thermoelemente 8 bzw. Temperatursensoren an der Kokille 2 verdeutlicht 2. Die Thermoelemente 8 bzw. Temperatursensoren sind über eine Datenleitung 11 mit einer Auswerteeinrichtung 10 und einem Display 9 zur Darstellung der Temperatur über Zeit und Ort verbunden.A continuous casting process is in 1 shown. Shown are a ladle 4 , a distributor trough 3 , a mold 2 with thermocouples 8th for temperature detection, one strand 1 , Guide rollers 5 , a cutting device 6 and a slab 7 , The arrangement of the thermocouples 8th or temperature sensors on the mold 2 clarifies 2 , The thermocouples 8th or temperature sensors are via a data line 11 with an evaluation device 10 and a display 9 connected to the representation of the temperature over time and place.

Aus der Temperaturmessung in der Kokille wird die Wahrscheinlichkeit für das Auftreten dieser Fehlstellen und damit eines Durchbruchs bestimmt. Die Messung wird mit Hilfe von Thermoelementen in der Kokille durchgeführt. 3 zeigt die abgewickelte Kokille, in der in zwei Zeilen je ca. n = 20 Thermoelemente angebracht sind.From the temperature measurement in the mold, the probability of the occurrence of these defects and thus a breakthrough is determined. The measurement is carried out by means of thermocouples in the mold. 3 shows the unwound mold, in each of which two rows of approx. n = 20 thermocouples are attached.

Zur Visualisierung ist eine Balkenanzeige gemäß 4 bekannt. Hierin wird für jedes Thermoelement über eine Balkendarstellung die Temperatur zum aktuellen Zeitpunkt angezeigt, also die aktuellen Meßwerte.For visualization, a bar graph is displayed 4 known. Here, the temperature for each thermocouple is displayed via a bar graph at the current time, ie the current measured values.

Die grundlegende Idee des erfindungsgemäß vorgeschlagenen Visualisierungsverfahrens liegt in der gleichzeitigen Darstellung von Ort (i), Temperatur (ii) und Zeit (iii) gemäß 5. Für die beiden Thermoelementreihen aus 3 ist jeweils eine Visualisierung nach 5 vorgesehen.

  • (i) Zeilenweise wird die örtliche Verteilung der Thermoelemente wie bislang dargestellt.
  • (ii) In jeder Zeile wird durch farbliche Unterscheidung die Temperatur t angegeben.
  • (iii) Zeilenweise werden die zeitlich nacheinander ein gehenden Daten dargestellt, so daß die Zeit T durch Abstieg in den Zeilen repräsentiert wird.
The basic idea of the visualization method proposed according to the invention lies in the simultaneous representation of location (i), temperature (ii) and time (iii) according to FIG 5 , For the two thermocouple rows off 3 is a visualization after each 5 intended.
  • (i) Line by line, the local distribution of the thermocouples is shown as before.
  • (ii) In each line, the temperature t is indicated by color distinction.
  • (iii) Line by line, the time sequential incoming data are displayed, so that the time T is represented by descent in the lines.

Gleichfarbige Elemente stellen Bereiche gleicher Temperatur dar. Die Verbindungslinien zwischen gleichfarbigen, nebeneinanderliegenden Bereiche, sog. Isochromen entsprechen Linien gleicher Temperatur, d. h. sogenannte Isothermen und bilden im ungestörten stationären Betrieb der Strangguß-Anlage senkrechte Linien.Suited Elements represent areas of equal temperature. The connecting lines between same-colored, juxtaposed areas, so-called isochromes correspond lines of the same temperature, d. H. so-called isotherms and form undisturbed stationary Operation of the continuous casting plant vertical lines.

Bei Auftreten der obengenannten Fehlstellen, bilden sich charakteristische Isochromen, die in dieser Form der Visualisierung für den Bediener einer Strangguß-Anlage einfach erkennbar sind. Das in 5 (links oben) angedeutete Muster zeigt einen Bereich, das sich um eine Fehlstelle mit erhöhter Temperatur herum ausgebildet hat, wie es bei Klebern charakteristisch ist. Die Temperatur ist im Inneren der Zeit-/Ortsverteilung am höchsten und fällt zu den Rändern ab.Upon occurrence of the above defects, characteristic isochromes are formed, which are easily recognizable in this form of visualization to the operator of a continuous casting plant. This in 5 (top left) indicates a region formed around a high temperature flaw, as is characteristic of adhesives. The temperature is highest in the interior of the time / space distribution and drops to the edges.

Nach dem gleichen Prinzip ist mit umgekehrtem Temperaturgradient in 5 (Mitte) ein Muster mit niedrigerer Temperatur im Inneren gezeigt, wie es bei Rißstellen auftritt.By the same principle is with reversed temperature gradient in 5 (Middle) shows a lower temperature pattern inside as it appears at break points.

Claims (2)

Verfahren zur Durchbruchfrüherkennung in einer Stranggußanlage, in der flüssiges Metall in eine Kokille (2) gegossen und in Form eines Stranges (1) aus der Kokille (2) herausgezogen wird, wobei die Temperatur der Kokille (2) gemessen wird, und wobei die Temperatur der Kokille (2) gleichzeitig über den Ort und über die Zeit der Messung der Temperatur dargestellt wird, dadurch gekennzeichnet, dass der Ort der Messung der Temperatur in einer Zeile dargestellt wird, dass in jeder Zeile durch farbliche Unterscheidung die Temperatur angegeben wird, dass die zeitlich nacheinander eingehenden gemessenen Temperaturen zeilenweise dargestellt werden, so dass die Zeit durch Abstieg in den Zeilen repräsentiert wird, und dass aus der Temperaturmessung in der Kokille (2) die Wahrscheinlichkeit für das Auftreten von Fehlstellen in einer Strangschale des Stranges (1) bestimmt wird.Method for early breakthrough detection in a continuous casting plant in which molten metal is poured into a mold ( 2 ) and in the form of a strand ( 1 ) from the mold ( 2 ) is withdrawn, the temperature of the mold ( 2 ), and wherein the temperature of the mold ( 2 ) is represented simultaneously over the location and over the time of the measurement of the temperature, characterized in that the location of the measurement of the temperature is displayed in a row, that in each row by color distinction, the temperature is indicated that the successively incoming measured Temperatures are displayed line by line, so that the time is represented by descent in the lines, and that from the temperature measurement in the mold ( 2 ) the probability of the occurrence of defects in a strand shell of the strand ( 1 ) is determined. Einrichtung zur Durchbruchfrüherkennung in einer Stranggußanlage, in der flüssiges Metall in eine Kokille (2) gegossen und in Form eines Stranges (1) aus der Kokille (2) herausgezogen wird, wobei die Einrichtung zur Durchbruchfrüherkennung Temperatursensoren (8) zur Messung der Temperatur der Kokille (2) und ein Display (9), zur gleichzeitigen Darstellung der Temperatur der Kokille (2) über den Ort der Messung der Temperatur und über die Zeit der Messung der Temperatur aufweist, dadurch gekennzeichnet, dass der Ort der Temperatur in einer Zeile dargestellt ist, dass in jeder Zeile durch farbliche Unterscheidung die Temperatur angegeben ist, dass die zeitlich nacheinander eingehenden gemessenen Temperaturen zeilenweise dargestellt werden, so dass die Zeit durch Abstieg in den Zeilen repräsentiert wird, und dass mit einer Auswerteeinrichtung 10 aus der Temperaturmessung in der Kokille (2) die Wahrscheinlichkeit für das Auftreten von Fehlstellen in einer Strangschale des Stranges (1) bestimmbar ist.Device for early breakthrough detection in a continuous casting plant in which molten metal is poured into a mold ( 2 ) and in the form of a strand ( 1 ) from the mold ( 2 ), wherein the means for early breakthrough detection temperature sensors ( 8th ) for measuring the temperature of the mold ( 2 ) and a display ( 9 ), for simultaneous display of the temperature of the mold ( 2 ) on the location of the measurement of the temperature and on the time of the measurement of the temperature, characterized in that the location of the temperature is shown in a row, that in each row by color distinction, the temperature is indicated that the time sequentially incoming measured Temperatures are displayed line by line, so that the time is represented by descent in the lines, and that with an evaluation device 10 from the temperature measurement in the mold ( 2 ) the probability of the occurrence of defects in a strand shell of the strand ( 1 ) is determinable.
DE19808998A 1998-03-03 1998-03-03 Method and device for early breakthrough detection in a continuous casting plant Expired - Fee Related DE19808998B4 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19808998A DE19808998B4 (en) 1998-03-03 1998-03-03 Method and device for early breakthrough detection in a continuous casting plant
PCT/DE1999/000445 WO1999044772A1 (en) 1998-03-03 1999-02-18 Method and device for early detection of a rupture in a continuos casting plant
US09/623,609 US20030150584A1 (en) 1998-03-03 1999-02-18 Method and device for early detection of a rupture in a continuous casting plant
AT99916748T ATE219978T1 (en) 1998-03-03 1999-02-18 METHOD AND DEVICE FOR EARLY BREAKDOWN DETECTION IN A CONTINUOUS CASTING PLANT
EP99916748A EP1060046B1 (en) 1998-03-03 1999-02-18 Method and device for early detection of a rupture in a continuos casting plant
DE59901923T DE59901923D1 (en) 1998-03-03 1999-02-18 METHOD AND DEVICE FOR BREAKTHROUGH DETECTION IN A CONTINUOUS CASTING SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19808998A DE19808998B4 (en) 1998-03-03 1998-03-03 Method and device for early breakthrough detection in a continuous casting plant

Publications (2)

Publication Number Publication Date
DE19808998A1 DE19808998A1 (en) 1999-09-09
DE19808998B4 true DE19808998B4 (en) 2007-12-06

Family

ID=7859539

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19808998A Expired - Fee Related DE19808998B4 (en) 1998-03-03 1998-03-03 Method and device for early breakthrough detection in a continuous casting plant
DE59901923T Revoked DE59901923D1 (en) 1998-03-03 1999-02-18 METHOD AND DEVICE FOR BREAKTHROUGH DETECTION IN A CONTINUOUS CASTING SYSTEM

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE59901923T Revoked DE59901923D1 (en) 1998-03-03 1999-02-18 METHOD AND DEVICE FOR BREAKTHROUGH DETECTION IN A CONTINUOUS CASTING SYSTEM

Country Status (5)

Country Link
US (1) US20030150584A1 (en)
EP (1) EP1060046B1 (en)
AT (1) ATE219978T1 (en)
DE (2) DE19808998B4 (en)
WO (1) WO1999044772A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10312923B8 (en) * 2003-03-22 2005-07-14 Sms Demag Ag Method for determining the measuring temperatures in continuous casting molds and continuous casting mold itself
CN100402190C (en) * 2005-11-03 2008-07-16 上海梅山钢铁股份有限公司 Method and equipment for monitoring and analyzing temperature of target on surface of continuous casting billet
DE102008029742A1 (en) * 2008-06-25 2009-12-31 Sms Siemag Aktiengesellschaft Mold for casting metal
DE102008060507A1 (en) 2008-07-10 2010-01-14 Sms Siemag Aktiengesellschaft Temperature measurement in a mold by a fiber optic measuring method
ITVI20080259A1 (en) * 2008-11-04 2010-05-05 Ieco S R L CONTINUOUS CASTING OVEN

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244903A1 (en) * 1982-12-04 1984-06-07 László Dipl.-Phys. 4190 Kleve Körtvélyessy FAST THERMOCOUPLE LEVEL REGULATION
US5020585A (en) * 1989-03-20 1991-06-04 Inland Steel Company Break-out detection in continuous casting
JPH0722811B2 (en) * 1990-11-02 1995-03-15 新日本製鐵株式会社 Constrained breakout prediction method for continuous casting
DE59600581D1 (en) * 1995-04-03 1998-10-22 Siemens Ag DEVICE FOR BREAKTHROUGH DETECTION IN CONTINUOUS CASTING

Also Published As

Publication number Publication date
ATE219978T1 (en) 2002-07-15
US20030150584A1 (en) 2003-08-14
DE19808998A1 (en) 1999-09-09
EP1060046B1 (en) 2002-07-03
EP1060046A1 (en) 2000-12-20
DE59901923D1 (en) 2002-08-08
WO1999044772A1 (en) 1999-09-10

Similar Documents

Publication Publication Date Title
EP0198910B1 (en) Process and device for detecting slag
DE19808998B4 (en) Method and device for early breakthrough detection in a continuous casting plant
DE2919625C2 (en) Method and apparatus for rapidly predicting the degree of nodularity of nodular cast iron
DE19725433C1 (en) Method and device for early breakthrough detection in the continuous casting of steel with an oscillating mold
EP1079219A3 (en) Method and sensor for the temperature measurement of a medium
EP0886775B1 (en) Method and immersion sensor to measure electrochemical activity
DE2647119A1 (en) IMPROVED THERMOCOUPLE AND DEVICES EQUIPPED WITH SUCH THERMOCOUPLE
DE3822705C2 (en)
DE19853785C2 (en) Method and measuring arrangement for determining changes in the operating state of refractory materials on containers carrying glass melt
DE2755587A1 (en) DEVICE FOR THE QUICK DETERMINATION OF THE BINDING FORMS OF GASES SUCH AS OXYGEN OR NITROGEN IN SOLID OR LIQUID SMALL METAL SAMPLES
DE3417969A1 (en) METHOD FOR OPERATING A CONTINUOUS BAND CASTING PLANT
DE3011958A1 (en) METHOD AND DEVICE FOR DETECTING LEAKS IN THE COOLING SYSTEM OF LARGE QUANTITIES OF CO-GAS-CONTAINING DEVICES
EP0045106A2 (en) Device for determining the freezing point of a liquid present on or taken from a road
DE69830740T2 (en) PROBE PROCESSING SYSTEM FOR CHECKING THE DISTRIBUTION OF FILLING GOODS IN A METALLURGICAL FURNACE
DE2155465C3 (en) Device with thermocouples to determine the thermal kinetics of or in steel blocks
DE3934975A1 (en) Method and appts. to control molten metal level in continuous casting - has output signal from eddy-current liq. level sensor connected w.r.t. output of resistance level probe
DE1508919C (en) Arrangement of a thermosensitive element in a cooled continuous casting mold
EP1504832B1 (en) Method and device for the contactless measurement of thickness and/or profile of cast metal strands , especially steel strands ,in a multi-strand continuous casting plant ,
DE2845892A1 (en) METHOD AND DEVICE FOR MANUFACTURING HOLLOW METAL MOLDED PARTS
DE102008028752A1 (en) Apparatus and method for detecting the risk of breakage of a steel strand in the continuous casting of steel
EP3135402A1 (en) Mould and method for monitoring a mould
DE631528C (en) Method for assessing the chemical or physical state of the contents of liquid metals with vessels containing slag above them, such as pouring pans or the like.
DE1959923B2 (en) Method for determining the carbon content of molten steel
DE102018214390A1 (en) Mold broadside of a continuous casting mold with variable measuring point density for improved longitudinal crack detection
EP2978864A2 (en) Lance and method for determining reaction data of the course of a reaction

Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8363 Opposition against the patent
R409 Internal rectification of the legal status completed
R409 Internal rectification of the legal status completed
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20111001

Effective date: 20131001