EP0885675A1 - Verfahren und Vorrichtung zur Durchbruchfrüherkennung beim Stranggiessen von Stahl mit einer oszillierenden Kokille - Google Patents
Verfahren und Vorrichtung zur Durchbruchfrüherkennung beim Stranggiessen von Stahl mit einer oszillierenden Kokille Download PDFInfo
- Publication number
- EP0885675A1 EP0885675A1 EP98110735A EP98110735A EP0885675A1 EP 0885675 A1 EP0885675 A1 EP 0885675A1 EP 98110735 A EP98110735 A EP 98110735A EP 98110735 A EP98110735 A EP 98110735A EP 0885675 A1 EP0885675 A1 EP 0885675A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mold
- oscillation
- strand
- breakthrough
- measurement data
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 title claims description 12
- 239000010959 steel Substances 0.000 title claims description 12
- 238000009749 continuous casting Methods 0.000 title claims description 11
- 230000010355 oscillation Effects 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000000052 comparative effect Effects 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 230000001133 acceleration Effects 0.000 claims abstract description 4
- 230000002123 temporal effect Effects 0.000 claims abstract description 3
- 238000011156 evaluation Methods 0.000 claims description 24
- 238000005266 casting Methods 0.000 claims description 13
- 238000005461 lubrication Methods 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 6
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/053—Means for oscillating the moulds
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
Definitions
- the invention relates to a method and an apparatus for Breakthrough early detection in the continuous casting of steel with a Copper plates trained, oscillating mold, by continuous and comparative measurement of operating parameters, e.g. the local and temporal temperature distribution in the copper plates with analysis of the measurement data obtained.
- Another method is using accelerometers tries to breakdown-relevant disorders in the form of movement with respect to three spatial axes during the mold oscillation capture. Deficiencies in this system occur in that it does Measurements do not always have a clear breakthrough with high probability capture. This has the consequence that the measuring system before a breakthrough either triggers false alarms or an alarm is given late or not at all.
- a plate mold for slabs is known from DE 24 15 224 C3, whose mold walls have cooling chambers that have limited cooling areas include.
- At the water supply and drain lines of the broadsides are Measuring elements for determining the amount of heat dissipated or Cooling capacities connected. Furthermore, in the measuring elements at the same time an average value of the cooling capacity of the cooling chambers formed, which is fed to an averager, with which the conicity of the narrow sides can be controlled. A Breakthrough early detection with satisfactory accuracy not feasible due to the measurement of the heat flows in the mold.
- An acceleration measurement of the mold is also possible with the help of known at least three accelerometers on the mold, the deviations in the mold movement (wobble) as a breakthrough criterion capture.
- the present invention is based on the aforementioned prior art the task of a method and a device for early breakthrough detection state with the highest possible probability for a precise assessment of signs of a acute breakthrough tendency in the continuous casting of steel enables becomes.
- the method and the device should be as extensive as possible be feasible with known means and measuring devices.
- the problem is solved with a method for early breakthrough detection in the continuous casting of steel that in the preamble of Claim 1 type with the invention in that to increase the probability of a precise assessment of signs an acute breakthrough tendency two measurement data to be compared both with each other and with measurement data from at least one third series of measurements are coupled and preferably analyzed online will.
- This partial adhesion or the effect of the lubrication between the mold and the strand can be determined, for example, with the aid of a line scan camera.
- an embodiment of the invention provides that comparative measurements of mold oscillation and strand oscillation on different circumferential areas of mold and strand be performed.
- a corresponding design of the method therefore provides that at different circumferential areas of the mold or Strange occurring disturbances in the uniformity of the friction through comparative measurements of the strand circumference or the Strand width can be localized.
- an embodiment of the invention provides that the mold oscillation and the strand oscillation to be compared with it preferably measured at the four corner points of the mold, and continuously compared and analyzing disruptions Measured data obtained in an electronic evaluation system recognized and with predetermined, breakthrough-relevant signals compared and at recognizable breakthrough trend measures to prevent a Breakthrough.
- a lowering the casting speed and / or a change in the addition quantity or Composition of the lubricant can be made.
- Critical cases can be a combination of both measures to be brought.
- the observation of the strand oscillation can be expediently used a line scan camera. Then the Appearance used that on the outside of the strand shell due to oscillation Markings are visible when the corresponding Setting can be recognized and evaluated by the line scan camera. As already stated at the beginning, can increase the probability an accurate assessment of signs of acute Breakthrough tendency an evaluation of the measurement results of the mold and Strand movement on the one hand and the temperature field in the Mold plates or the path-time behavior of the mold movement on the other hand, be coupled.
- the evaluation computing unit 30 As soon as the evaluation computing unit 30 is a dangerous breakthrough Combination of measurement data from the individual electronic evaluation units 20-22, it generates an early warning pulse and passes this on to the signal generator 31, which in turn, symbolized by the number 100, initiates a countermeasure, For example, on actuators to reduce the casting speed 13 or acts to the increased task of lubricants 40.
- Figure 1 further shows a cylindrical immersion pouring tube 4 Task of liquid steel 41 and from the bottom of the Mold 1 emerging casting strand 6 with clearly recognizable oscillation markings 7 on its scope.
- accelerometers 10.1 to 10.4 are arranged and firmly connected to the top of the mold 1.
- These accelerometers the measuring lines 15.1 to 15.4 are assigned and the Evaluation electronics 20 switched on.
- these are Evaluation electronics 20 also the signals of the vibration exciter 5 connected with the measuring lines 25.1 and 25.2, causing interference in the path-time behavior of the mold movement in deviation from the forcibly induced oscillation excitation of the oscillators 5 can be detected.
- FIG. 2 shows two oscillograms A and B.
- Oscillogram A shows the typical course of a disturbance in the path-time behavior of the mold 1, for example as a result of a disturbance in the uniformity of the friction between the mold and the strand.
- the oscillogram B shows a reciprocal vibration behavior of the cast strand 6.
- Figure 3 shows the oscillogram C for a normal mold oscillation and the oscillogram D for normal strand oscillation without interference.
- C1 there is a noticeable oscillation of the Drawn mold.
- D1 there is a striking oscillation drawn.
- Using the hatched fields C-D between normal oscillation C of the mold and normal oscillation D of the cast strand can be deduced that normal lubrication behavior or a normal partial adhesion that is to be expected according to the design is present between the mold and the strand shell.
- the hatched field C1 - D1 shows a breakthrough criterion, because of a conspicuous lubrication behavior (defective lubrication) or an increased partial adhesion between the mold and the strand shell with a high probability of a change in the field C-D towards C1 - D1.
- the early warning signal generator 31 would then, for example, reduce the casting speed 13 with a command to the actuators 100, for example by means of the roller drive of the continuous casting installation, and at the same time change the lubricant application 40 in the sense of more effective lubrication.
- the time-controlled decrease in the casting speed can take place between 50% and 100% for a maximum time of 2 minutes. In this way, an actual breakthrough of liquid steel could be reliably prevented by a targeted early warning. If the breakthrough is prevented, the strand is accelerated to the desired speed in a controlled manner.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
- Ölschmierung oder
- Gießschlackenschmierung und
- Art der Kupferplatte mit und ohne Beschichtung, z. B. Cr, Ni, etc.
- Figur 1
- eine Vorrichtung zur Durchführung des Verfahrens nach der Erfindung,
- Figur 2
- ein Diagramm der Oszillationsbewegungen von Kokille und Strang bei einer auftretenden Störung der Gleichförmigkeit,
- Figur 3
- ein Oszillationsdiagramm mit signifikanter Tendenz eines Durchbruchs.
Claims (12)
- Verfahren zur Durchbruchfrüherkennung beim Stranggießen von Stahl mit einer mit Kupferplatten ausgebildeten, oszillierenden Kokille, durch fortlaufende und vergleichende Messung von Betriebsparametern, bspw. der örtlichen und zeitlichen Temperatur-Verteilung in den Kupferplatten mit Analyse der erhaltenen Meßdaten,
dadurch gekennzeichnet,
daß zur Erhöhung der Wahrscheinlichkeit einer zielgenauen Beurteilung von Anzeichen einer akuten Durchbruchs-Tendenz zwei zu vergleichende Meßdaten sowohl miteinander, als auch mit Meßdaten von wenigstens einer dritten Meßreihe gekoppelt werden und vorzugsweise online analysiert werden. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß mittels einer dritten Meßreihe der nach Maßgabe der Wirksamkeit der Schmierung reibungsabhängige Teil-Kraftschluß zwischen Kokille und Gießstrang durch vergleichende Messung der Kokillenoszillation und der Strangoszillation unterhalb der Kokille gemessen und die Meßdaten zusammen mit den Meßdaten aus der Temperatur-Verteilung sowie dem Weg-Zeit-Verhalten der Kokille gekoppelt und das Ergebnis rechnerisch analysiert wird. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß vergleichende Messungen von Kokillenoszillation und Strangoszillation an unterschiedlichen Umfangsbereichen von Kokille und Strang durchgeführt werden. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet,
daß die an unterschiedlichen Umfangsbereichen der Kokille bzw. des Stranges auftretenden Störungen in der Gleichförmigkeit der Reibung durch vergleichende Messungen über den Strangumfang bzw. die Strangbreite lokalisiert werden. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet,
daß die Kokillenoszillation und die mit dieser zu vergleichende Strangoszillation bevorzugt an den vier Eckpunkten der Kokille gemessen und fortlaufend verglichen und dabei Störungen mittels Analyse der erhaltenen Meßdaten in einer Auswert-Elektronik erkannt und mit vorgegebenen, durchbruchsrelevanten Signalen verglichen und bei erkennbarer Durchbruchstendenz Maßnahmen zur Verhinderung eines Durchbruchs eingeleitet werden. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet,
daß die Temperaturdifferenzmessung des Kokillen-Kühlwassers zwischen Ein- und Auslauf je Kokillenplatte (2, 2.1; 3, 3.1) sowohl integral als auch partiell und integral je Kokillenbreitseite (2; 2.1) vorgenommen wird. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet,
daß als Maßnahmen zur Durchbruchsverhinderung bevorzugt eine Absenkung der Gießgeschwindigkeit und/oder Änderung von Zugabemenge oder Zusammensetzung des Schmiermittels vorgenommen wird. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet,
daß die Beobachtung der Strangoszillation unter Verwendung einer Zeilenkamera durchgeführt wird. - Vorrichtung zur Durchbruchfrüherkennung beim Stranggießen von Stahl mit einer mit Kupferplatten (2, 3) ausgebildeten, von einem Schwingungserreger (5) in oszillierende Schwingungen erregbaren Plattenkokille (1), insbesondere zur Durchführung des Verfahrens nach mindestens einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß sie eine Meß- und Auswerteinrichtung mit folgenden Elementen umfaßt:wenigstens einen Beschleunigungsmesser (10.1 - 10.4) für die Oszillation,eine Anzahl von Thermoelementen (11) in den Kokillenplatten,eine Zeilenkamera (12) zur Erkennung der Strangoszillation,einen Geschwindigkeitsmesser (13) für Stranggießgeschwindigkeit,eine Auswertelektronik (20) für die Oszillationsbeschleunigung,eine Auswertelektronik (21) für Temperaturmessungen in den Kokillenplatten,eine Auswertelektronik (22) für die Strangoszillation,eine zentrale Auswertungs-Recheneinheit (30),einen Frühwarnungssignalgeber (31). - Vorrichtung nach Anspruch 9,
dadurch gekennzeichnet,
daß die Meß- und Auswerteinrichtung zusätzlich Thermoelemente (16) zur Temperaturdifferenzmessung (a-z) über die Kokillenbreitseite (2, 2.1) aufweist. - Vorrichtung nach Anspruch 9 oder 10,
dadurch gekennzeichnet,
daß der Frühwarnungs-Signalgeber (31) mit Stellgliedern (100) bevorzugt zum zielkontrollierten Absenken der Gießgeschwindigkeit verbunden ist, - Vorrichtung nach Anspruch 9 bis 11,
dadurch gekennzeichnet,
daß in der Verbindung von Frühwarnungs-Signalgeber (31) und den Stellgliedern (100) ein Zeitschalter angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19725433 | 1997-06-16 | ||
DE19725433A DE19725433C1 (de) | 1997-06-16 | 1997-06-16 | Verfahren und Vorrichtung zur Durchbruchfrüherkennung beim Stranggießen von Stahl mit einer oszillierenden Kokille |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0885675A1 true EP0885675A1 (de) | 1998-12-23 |
EP0885675B1 EP0885675B1 (de) | 2002-10-30 |
Family
ID=7832636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98110735A Expired - Lifetime EP0885675B1 (de) | 1997-06-16 | 1998-06-12 | Verfahren und Vorrichtung zur Durchbruchfrüherkennung beim Stranggiessen von Stahl mit einer oszillierenden Kokille |
Country Status (7)
Country | Link |
---|---|
US (1) | US6179041B1 (de) |
EP (1) | EP0885675B1 (de) |
JP (1) | JPH1177264A (de) |
KR (1) | KR19990006983A (de) |
AT (1) | ATE226860T1 (de) |
DE (2) | DE19725433C1 (de) |
DK (1) | DK0885675T3 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10108730A1 (de) * | 2001-02-23 | 2002-09-12 | Thyssenkrupp Stahl Ag | Vorrichtung und ein Verfahren zum Erkennen der Gefahr eines Durchbruchs des Stahlstrangs beim Stranggießen von Stahl |
DE10312923B3 (de) * | 2003-03-22 | 2004-10-07 | Sms Demag Ag | Verfahren zum Bestimmen der Mess-Temperaturen in Stranggießkokillen und Stranggießkokille selbst |
WO2009149680A1 (de) * | 2008-06-13 | 2009-12-17 | Sms Siemag Aktiengesellschaft | Verfahren zur vorhersage der entstehung von längsrissen beim stranggiessen |
CN101642801B (zh) * | 2008-08-07 | 2011-08-24 | 上海重矿连铸技术工程有限公司 | 连铸结晶器的振动方法 |
CN110523941A (zh) * | 2019-08-06 | 2019-12-03 | 北京数钰科技发展有限公司 | 连铸粘结漏钢多级风险控制方法及控制装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6564119B1 (en) * | 1998-07-21 | 2003-05-13 | Dofasco Inc. | Multivariate statistical model-based system for monitoring the operation of a continuous caster and detecting the onset of impending breakouts |
DE19843033B4 (de) * | 1998-09-19 | 2017-11-09 | Sms Group Gmbh | Durchbrucherkennungsverfahren für eine Stranggießkokille |
WO2000051762A1 (fr) * | 1999-03-02 | 2000-09-08 | Nkk Corporation | Procede et dispositif permettant, en coulee continue, de predire et de reguler la configuration d'ecoulement de l'acier en fusion |
DE19915269A1 (de) * | 1999-04-03 | 2000-10-26 | Sms Demag Ag | Verfahren zur Bestimmung der Reibung zwischen Strangschale und Kokille beim Stranggießen |
DE10027324C2 (de) * | 1999-06-07 | 2003-04-10 | Sms Demag Ag | Verfahren zum Gießen eines metallischen Strangs sowie System hierzu |
DE50009703D1 (de) * | 1999-07-06 | 2005-04-14 | Sms Demag Ag | Verfahren zur Schmelzenführung in einer Stranggiessmaschine |
ATE299766T1 (de) * | 2000-04-25 | 2005-08-15 | Sms Demag Ag | Verfahren und vorrichtung zur thermischen kontrolle einer stranggiesskokille |
KR20030037339A (ko) * | 2001-11-01 | 2003-05-14 | 주식회사 포스코 | 연속주조 주형감시장치 |
KR100488758B1 (ko) * | 2001-12-22 | 2005-05-11 | 주식회사 포스코 | 연속 주조기의 주형 진동 특성 진단 장치 및 그 방법 |
CA2414167A1 (en) * | 2002-12-12 | 2004-06-12 | Dofasco Inc. | Method and online system for monitoring continuous caster start-up operation and predicting start cast breakouts |
US6885907B1 (en) * | 2004-05-27 | 2005-04-26 | Dofasco Inc. | Real-time system and method of monitoring transient operations in continuous casting process for breakout prevention |
JP6699631B2 (ja) * | 2017-07-04 | 2020-05-27 | Jfeスチール株式会社 | 鋳型振動監視方法及びブレークアウト監視方法 |
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JPS5732866A (en) * | 1980-08-05 | 1982-02-22 | Kawasaki Steel Corp | Method and device for foreseeing breakout in continuous casting |
JPS57124563A (en) * | 1981-01-28 | 1982-08-03 | Nippon Steel Corp | Control device for continuous casting |
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JPS6418553A (en) * | 1987-07-13 | 1989-01-23 | Kawasaki Steel Co | Instrument for detecting friction force between mold and cast slab in continuous casting apparatus |
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EP0389139A2 (de) * | 1989-03-20 | 1990-09-26 | Inland Steel Company | Durchbruch-Feststellung beim Stranggiessen |
DE4442087A1 (de) * | 1994-11-25 | 1996-05-30 | Siemens Ag | Einrichtung zur Durchbruch-Früherkennung beim Stranggießen |
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1997
- 1997-06-16 DE DE19725433A patent/DE19725433C1/de not_active Expired - Fee Related
-
1998
- 1998-06-10 US US09/095,274 patent/US6179041B1/en not_active Expired - Fee Related
- 1998-06-10 JP JP10162408A patent/JPH1177264A/ja not_active Withdrawn
- 1998-06-12 EP EP98110735A patent/EP0885675B1/de not_active Expired - Lifetime
- 1998-06-12 DK DK98110735T patent/DK0885675T3/da active
- 1998-06-12 DE DE59806092T patent/DE59806092D1/de not_active Expired - Fee Related
- 1998-06-12 AT AT98110735T patent/ATE226860T1/de not_active IP Right Cessation
- 1998-06-15 KR KR1019980022280A patent/KR19990006983A/ko not_active Application Discontinuation
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EP0389139A2 (de) * | 1989-03-20 | 1990-09-26 | Inland Steel Company | Durchbruch-Feststellung beim Stranggiessen |
DE4442087A1 (de) * | 1994-11-25 | 1996-05-30 | Siemens Ag | Einrichtung zur Durchbruch-Früherkennung beim Stranggießen |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10108730A1 (de) * | 2001-02-23 | 2002-09-12 | Thyssenkrupp Stahl Ag | Vorrichtung und ein Verfahren zum Erkennen der Gefahr eines Durchbruchs des Stahlstrangs beim Stranggießen von Stahl |
DE10108730C2 (de) * | 2001-02-23 | 2003-01-30 | Thyssenkrupp Stahl Ag | Vorrichtung und ein Verfahren zum Erkennen der Gefahr eines Durchbruchs des Stahlstrangs beim Stranggießen von Stahl |
DE10312923B3 (de) * | 2003-03-22 | 2004-10-07 | Sms Demag Ag | Verfahren zum Bestimmen der Mess-Temperaturen in Stranggießkokillen und Stranggießkokille selbst |
DE10312923B8 (de) * | 2003-03-22 | 2005-07-14 | Sms Demag Ag | Verfahren zum Bestimmen der Mess-Temperaturen in Stranggießkokillen und Stranggießkokille selbst |
WO2009149680A1 (de) * | 2008-06-13 | 2009-12-17 | Sms Siemag Aktiengesellschaft | Verfahren zur vorhersage der entstehung von längsrissen beim stranggiessen |
US8649986B2 (en) | 2008-06-13 | 2014-02-11 | Sms Siemag Ag | Process for predicting the emergence of longitudinal cracks during continuous casting |
CN101642801B (zh) * | 2008-08-07 | 2011-08-24 | 上海重矿连铸技术工程有限公司 | 连铸结晶器的振动方法 |
CN110523941A (zh) * | 2019-08-06 | 2019-12-03 | 北京数钰科技发展有限公司 | 连铸粘结漏钢多级风险控制方法及控制装置 |
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Publication number | Publication date |
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US6179041B1 (en) | 2001-01-30 |
KR19990006983A (ko) | 1999-01-25 |
JPH1177264A (ja) | 1999-03-23 |
EP0885675B1 (de) | 2002-10-30 |
DE59806092D1 (de) | 2002-12-05 |
DK0885675T3 (da) | 2002-11-25 |
DE19725433C1 (de) | 1999-01-21 |
ATE226860T1 (de) | 2002-11-15 |
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