EP1103322B1 - Verfahren zum Stranggiessen von Brammen, insbesondere von Dünnbrammen, sowie eine Vorrichtung zu dessen Durchführung - Google Patents
Verfahren zum Stranggiessen von Brammen, insbesondere von Dünnbrammen, sowie eine Vorrichtung zu dessen Durchführung Download PDFInfo
- Publication number
- EP1103322B1 EP1103322B1 EP00123615A EP00123615A EP1103322B1 EP 1103322 B1 EP1103322 B1 EP 1103322B1 EP 00123615 A EP00123615 A EP 00123615A EP 00123615 A EP00123615 A EP 00123615A EP 1103322 B1 EP1103322 B1 EP 1103322B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- casting mould
- temperature
- heat flux
- slabs
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000009749 continuous casting Methods 0.000 title claims description 9
- 238000005266 casting Methods 0.000 claims abstract description 41
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- 230000005499 meniscus Effects 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 230000004907 flux Effects 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
-
- 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
-
- 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
- B22D2/006—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the temperature of the molten metal
Definitions
- the invention relates to a method for the continuous casting of blocks, billets, Slabs, in particular of thin slabs, in the size range of approximately 20 up to 150 mm thick and approximately 600 to 3500 mm wide, by means of an oscillatable water-cooled mold used in conjunction with a diving spout of casting powder for the formation of foundry slag, the local working temperatures and heat flux densities in the surface quality of a slab detected critical meniscus area and the measurement signals forwarded to a computer become.
- the invention also relates to a device for implementation of the procedure.
- the cooling water temperature of a mold wall becomes at least two Make in the region of the drain holes of a copper plate and the associated Water box is measured and measured from across the width of the copper plate Values a temperature profile is created and obtained in time intervals Temperature profiles are compared.
- the inlet temperature measured the cooling water, the difference between inlet and outlet temperature determined and from the cooling water quantity per unit time the partial integral Heat removal from a mold wall or from a Kokillenband Scheme determined and partial inequalities due to partial quantity corrections of the cooling water compensated.
- the liquid-cooled mold for carrying out the method is designed so that in the water drainage area between a copper plate and the Cooling water drain opening of the water tank, in particular per broadside plate Temperature sensors are arranged at least at two points and their signal lines connected to a computer, preferably with an online screen are.
- the present invention seeks to provide a method and apparatus for continuously casting blocks, billets, slabs, especially of thin slabs, which are suitable, local temperatures and / or heat flux along the height of mold walls and at to calculate several points of its broadside extent at respectively different depths (X 1 , X 2 ) of the mold wall in the meniscus area.
- operating parameters such as the amount of cooling water, casting speed and casting powder are to be controlled in such a way that, given a preferred working temperature of the mold walls in the meniscus region, optimal surface formation of the slabs is possible with the mold being available as long as possible.
- a method according to the characterizing part of claim 1 is proposed in a method referred to in the preamble of claim 1 with the working temperatures along the height of the mold walls at several points of their Breitumbleerstreckung in each case different depths (X 1 , X 2 ), in the meniscus area by adjusting the relevant operating parameters such as the amount of cooling water or flow rate of the cooling water through the mold, casting speed and casting powder to be used in a predetermined temperature range (.DELTA.T) are maintained.
- a further embodiment of the method according to the invention provides that the associated local heat flow density is calculated from the temperature difference of at least two thermoelements located in approximately the same height range (Yi, eg y 1 , y 2 ).
- an embodiment of the method according to the invention provides that by determining the temperature or heat flow over the height of a Kokillenwand by means of approximation functions of the maximum temperature profile the wall surface in contact with the melt is calculated.
- there provides a further embodiment of the method, that upon detection of a Heat flux density change in mold height (y) due to two-dimensional Heat propagation in the bath level range (M) by assuming a heat flow density curve on a mold surface and with knowledge of the heat flux density in the depth (x) of a mold wall the position of the bath mirror (M) is determined online.
- Another embodiment of the method according to the invention provides that knowing the optimum heat flux density or the maximum Surface temperature of the mold for optimal slab surface formation most suitable mold heat load by adjusting the amount of cooling water and / or driven by casting speed and / or the casting powder becomes.
- thermocouples are arranged in the mold walls in the bathroom mirror area and below, the signal lines switched to a computer are according to the invention is that the thermocouples y m , y n in the broad side walls of the mold in an area above and below the bath level (M) and at different depths (X 1 , X 2 ) of the mold wall are arranged, and that the thermocouples y m , y n along the height of the mold walls at several points of their Breit conveyorerstreckung at equal distances from the contact surface with the molten metal in paired arrangement are embedded, wherein the arithmetic unit, which in accordance with the determined temperature or heat flux density, theeckntempe Calculating the temperature of the mold in the meniscus region (M), with actuator for the operating parametersdewassenge, casting speed and casting powder
- FIG. 1 shows a temperature profile or a heat flow profile over the height (y) of a mold wall and in at least two spacing regions (x 1 , x 2 ) of the mold wall from the molten bath (M).
- the curve of the strongly drawn curve (y 1 , y 3 , y 5 , y 7 , y 9 , y 11 ) shows a pronounced ternary maximum (T max ) in the range of a predetermined temperature range ( ⁇ T).
- the located further inside of the mold wall measuring points (y 2, y 4, y 6, y 8, y 10, y 12) show a similar curve with maximum temperature (T max) in the meniscus area (M).
- the temperature profile of the mold surface is calculated from the measured temperature profiles.
- the temperature curves can via an electronic measuring device in a Display be recorded online and made visible. You can use this , the temperature in the specified temperature window ( ⁇ T) to keep the automatic control of the relevant operating parameters constant, in order to achieve an optimal surface formation, for example, in a thin slab.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
Diese Dokumente betreffen Verfahren zum Stranggießen mit einer Erfassung und Regelung der Temperatur der Kokillenwände. Als Regelungsgröße wird die Kühlintensität bzw. Menge des Kühlmittels vorgeschlagen. In beiden Dokumenten werden Thermoelemente im Badspiegelbereich und darunter angeordnet und die Messsignale werden an einen Rechner weitergeleitet.
Claims (7)
- Verfahren zum Stranggießen von Blöcken, Knüppeln, Brammen, insbesondere von Dünnbrammen, im Abmessungsbereich von etwa 20 bis 150 mm Dicke und etwa 600 bis 3500 mm Breite, mittels einer oszillierbaren, wasserkühlbaren Kokille im Zusammenwirken mit einem Tauchausguss unter Einsatz von Gießpulver zur Bildung von Gießschlacke, wobei die Arbeitstemperaturen und Wärmestromdichten im für die Oberflächenqualität einer Bramme kritischen Meniskusbereich erfasst und die Messsignale an einen Rechner weitergeleitet werden,
dadurch gekennzeichnet, dass die lokalen Arbeitstemperaturen entlang der Höhe der Kokillenwände an mehreren Stellen ihrer Breitseitenerstreckung in jeweils unterschiedlichen Tiefen (X1, X2) im Meniskusbereich durch Anpassung der hierfür maßgebenden Betriebsparameter wie Kühlwassermenge bzw. Durchlaufgeschwindigkeit des Kühlwasser durch die Kokille, Gießgeschwindigkeit und zu verwendendes Gießpulver, in einem vorgegebenen Temperaturbereich (Δ T) gehalten werden. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass Arbeitstemperaturen der Kokillenplatten durch in jeweils einem Höhenbereich (Yi) (i = 1 bis n) über- und unter dem Badspiegel (M) in definierten Abständen angeordnete Thermoelemente erfasst werden. - Verfahren nach dem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, dass aus der Temperaturdifferenz wenigstens zweier in annähernd gleichem Höhenbereich (Yi) gelegener Thermoelemente die zugehörige lokale Wärmestromdichte errechnet wird. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass durch Ermittlung des Temperatur- bzw. Wärmestromverlaufs über die Höhe einer Kokillenwand mittels Näherungsfunktionen der maximale Temperaturverlauf an der im Kontakt mit der Schmelze befindlichen Wandfläche berechnet wird. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass bei Erfassung einer Wärmestromdichte-Änderung in der Kokillenhöhe (y) infolge zweidimensionaler Wärmeausbreitung im Badspiegelbereich (M) durch Annahme eines Wärmestromdichteverlaufs an einer Kokillenoberfläche und mit Kenntnis der Wärmestromdichte in der Tiefe (x) einer Kokillenwand die Lage des Badspiegels (M) ermittelt wird. - Verfahren nach einem oder mehreren der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass bei Kenntnis der optimalen Wärmestromdichte oder der maximalen Oberflächentemperatur die für eine optimale Brammenoberflächenausbildung bestgeeignete Kokillenbelastung durch Einstellen von Kühlwassermenge und/oder von Gießgeschwindigkeit und/oder des Gießpulvers angesteuert wird. - Vorrichtung zur Erfassung von lokalen Temperaturen und/oder Wärmestromdichten an einer wassergekühlten Kokille beim Stranggießen von Blökken, Knüppeln, Brammen, insbesondere von Dünnbrammen, zwecks Durchführung des Verfahrens nach den Ansprüchen 1 bis 6, wobei Thermoelemente in den Kokillenwänden im Badspiegelbereich und darunter angeordnet sind, deren Signalleitungen einem Rechner aufgeschaltet sind,
dadurch gekennzeichnet, dass die Thermoelemente (ym, yn) in den Breitseitenwänden der Kokille in einem Bereich über und unter dem Badspiegel (M) sowie in unterschiedlichen Tiefen (X1, X2) der Kokillenwand angeordnet sind, und dass die Thermolemente (ym, yn) entlang der Höhe der Kokillenwände an mehreren Stellen Ihrer Breitseitenerstreckung in gleichen Abständen von deren Kontaktfläche mit dem schmelzflüssigen Metall in paarweiser Anordnung eingelassen sind, wobei die Recheneinheit, welche nach Maßgabe der ermittelten Temperatur bzw. Wärmestromdichte die Oberflächentemperatur der Kokille im Meniskusbereich (M) errechnet, mit Stellgliedern für die Betriebsparameter Kühlwassermenge, Gießgeschwindigkeit sowie Gießpulver in Verbindung steht, zur Steuerung einer bevorzugten Arbeitstemperatur der Kokillenwand innerhalb eines vorgegebenen Temperaturbereichs (Δ T).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19956577 | 1999-11-25 | ||
DE19956577A DE19956577A1 (de) | 1999-11-25 | 1999-11-25 | Verfahren zum Stranggießen von Brammen, insbesondere von Dünnbrammen, sowie eine Vorrichtung zu dessen Durchführung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1103322A1 EP1103322A1 (de) | 2001-05-30 |
EP1103322B1 true EP1103322B1 (de) | 2005-03-30 |
Family
ID=7930201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00123615A Expired - Lifetime EP1103322B1 (de) | 1999-11-25 | 2000-10-28 | Verfahren zum Stranggiessen von Brammen, insbesondere von Dünnbrammen, sowie eine Vorrichtung zu dessen Durchführung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6776217B1 (de) |
EP (1) | EP1103322B1 (de) |
JP (1) | JP2001334354A (de) |
AT (1) | ATE291980T1 (de) |
DE (2) | DE19956577A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012224132A1 (de) * | 2012-12-21 | 2014-06-26 | Siemens Vai Metals Technologies Gmbh | Überwachungsverfahren für eine Stranggießkokille mit Aufbau einer Datenbank |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL367404A1 (en) * | 2001-09-28 | 2005-02-21 | Sms Demag Ag | Method and device for cooling the copper plates of a continuous casting ingot mould for liquid metals, especially liquid steel |
KR20040038224A (ko) * | 2002-10-31 | 2004-05-08 | 주식회사 포스코 | 열전대를 이용한 연주 몰드 용강 탕면 높이 검출장치 |
DE102006060673A1 (de) * | 2006-11-02 | 2008-05-08 | Sms Demag Ag | Verfahren und Regelvorrichtung zum Regeln der Wärmeabfuhr einer Seitenplatte einer Kokille |
GB0623755D0 (en) * | 2006-11-28 | 2007-01-10 | Sarclad Ltd | Measuring system for continuous casting machines |
DE102008029742A1 (de) | 2008-06-25 | 2009-12-31 | Sms Siemag Aktiengesellschaft | Kokille zum Gießen von Metall |
CN102059332B (zh) * | 2009-11-12 | 2014-08-20 | 上海宝信软件股份有限公司 | 在基础自动化中实现板坯生命周期模型的*** |
DE102009060548B4 (de) | 2009-12-23 | 2020-06-04 | Vdeh-Betriebsforschungsinstitut Gmbh | Kokille für eine Stranggießanlage und Verwendung einer solchen Kokille |
CH702754A2 (de) * | 2010-02-19 | 2011-08-31 | Stopinc Ag | Überwachungseinrichtung für einen Schiebeverschluss, einen Giessrohrwechsler oder dergleichen an einem metallurgischen Gefäss. |
CN102397999B (zh) * | 2010-09-16 | 2013-05-29 | 鞍钢股份有限公司 | 一种钢包渣厚与净空测量方法 |
DE102011114556A1 (de) * | 2011-09-30 | 2013-04-04 | Egon Evertz Kg (Gmbh & Co.) | Kupfer-Kokille oder Kupfer-Kokillenplatte zum Stranggießen von Metallen oder Metalllegierungen |
CN103745095B (zh) * | 2013-12-25 | 2016-08-17 | 冶金自动化研究设计院 | 一种连铸坯通用信息化表示方法 |
DE102014112206A1 (de) * | 2014-08-26 | 2016-03-03 | Peter Valentin | Verfahren zum Stranggießen eines Metalls, insbesondere eines Stahls, und Vorrichtung zum Stranggießen |
WO2016060164A1 (ja) * | 2014-10-15 | 2016-04-21 | 新日鐵住金株式会社 | 連続鋳造鋳型内の湯面レベル検出装置、方法およびプログラム |
CN104399928B (zh) * | 2014-11-24 | 2016-07-06 | 南京钢铁股份有限公司 | 一种生产宽断面9Ni钢铸坯的连铸生产工艺 |
CN109789476B (zh) * | 2016-05-25 | 2021-10-12 | Ald真空技术有限公司 | 电渣重熔的方法及熔化容器 |
CN105798253B (zh) * | 2016-06-06 | 2017-08-04 | 重庆大学 | 一种异型坯连铸二冷辊缝调整方法 |
EP4091737A1 (de) | 2021-05-17 | 2022-11-23 | Primetals Technologies Austria GmbH | Umrechnung von gemessenen temperaturwerten einer stranggiesskokille |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3367341D1 (en) * | 1982-02-24 | 1986-12-11 | Kawasaki Steel Co | Method of controlling continuous casting facility |
JPS58151952A (ja) * | 1982-03-02 | 1983-09-09 | Kobe Steel Ltd | 電磁撹「はん」用鋳型の冷却方法 |
DE3244903A1 (de) * | 1982-12-04 | 1984-06-07 | László Dipl.-Phys. 4190 Kleve Körtvélyessy | Schnelle thermoelement-niveauregulierung |
DE3423475C2 (de) * | 1984-06-26 | 1986-07-17 | Mannesmann AG, 4000 Düsseldorf | Verfahren und Einrichtung zum Stranggießen von flüssigen Metallen, insbesondere von flüssigem Stahl |
JPS63104754A (ja) * | 1986-10-20 | 1988-05-10 | Mitsubishi Heavy Ind Ltd | スプレ冷却モ−ルドの水量調節方法 |
JPH01284470A (ja) * | 1988-05-12 | 1989-11-15 | Kawasaki Steel Corp | 丸鋳片の連続鋳造制御方法 |
DE4117073A1 (de) | 1991-05-22 | 1992-11-26 | Mannesmann Ag | Temperaturmessung brammenkokille |
JPH06304727A (ja) * | 1993-04-23 | 1994-11-01 | Nippon Steel Corp | 鋳造速度制御装置 |
JPH06320245A (ja) * | 1993-05-12 | 1994-11-22 | Nippon Steel Corp | モールド内抜熱制御装置 |
DE19529931C1 (de) | 1995-08-02 | 1997-04-03 | Mannesmann Ag | Plattenkokille zur Erzeugung von Strängen aus Stahl |
DE19810672B4 (de) | 1998-03-12 | 2006-02-09 | Sms Demag Ag | Verfahren und Stranggießkokille zum Erzeugen von Brammensträngen, insbesondere aus Stahl |
-
1999
- 1999-11-25 DE DE19956577A patent/DE19956577A1/de not_active Withdrawn
-
2000
- 2000-10-28 DE DE50009907T patent/DE50009907D1/de not_active Expired - Lifetime
- 2000-10-28 EP EP00123615A patent/EP1103322B1/de not_active Expired - Lifetime
- 2000-10-28 AT AT00123615T patent/ATE291980T1/de active
- 2000-11-17 US US09/715,933 patent/US6776217B1/en not_active Expired - Fee Related
- 2000-11-21 JP JP2000354312A patent/JP2001334354A/ja not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012224132A1 (de) * | 2012-12-21 | 2014-06-26 | Siemens Vai Metals Technologies Gmbh | Überwachungsverfahren für eine Stranggießkokille mit Aufbau einer Datenbank |
DE102012224132B4 (de) | 2012-12-21 | 2023-10-05 | Primetals Technologies Austria GmbH | Überwachungsverfahren für eine Stranggießkokille mit Aufbau einer Datenbank |
Also Published As
Publication number | Publication date |
---|---|
DE19956577A1 (de) | 2001-05-31 |
EP1103322A1 (de) | 2001-05-30 |
ATE291980T1 (de) | 2005-04-15 |
DE50009907D1 (de) | 2005-05-04 |
JP2001334354A (ja) | 2001-12-04 |
US6776217B1 (en) | 2004-08-17 |
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