EP0026390B1 - Process for setting the adjustment speed of the narrow sides of a plate-ingot mould during the continuous casting of steel - Google Patents
Process for setting the adjustment speed of the narrow sides of a plate-ingot mould during the continuous casting of steel Download PDFInfo
- Publication number
- EP0026390B1 EP0026390B1 EP80105538A EP80105538A EP0026390B1 EP 0026390 B1 EP0026390 B1 EP 0026390B1 EP 80105538 A EP80105538 A EP 80105538A EP 80105538 A EP80105538 A EP 80105538A EP 0026390 B1 EP0026390 B1 EP 0026390B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- narrow sides
- mold
- continuous casting
- setting
- steel
- 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
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title claims description 7
- 229910000831 Steel Inorganic materials 0.000 title claims description 5
- 239000010959 steel Substances 0.000 title claims description 5
- 238000006073 displacement reaction Methods 0.000 claims 2
- 238000005266 casting Methods 0.000 description 16
- 238000001816 cooling Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- B22D11/168—Controlling or regulating processes or operations for adjusting the mould size or mould taper
Definitions
- the invention relates to a method for adjusting the adjustment speed of narrow sides of a plate mold in continuous steel casting, the distance between the narrow sides being increased during the continuous casting operation.
- a method for controlling the cooling capacity of narrow side walls in plate molds during continuous casting is also known (CH-PS 558 687), in which the conicity of the mold is set to a desired value adapted to the intended casting speed and / or the casting temperature before the start of casting if the casting speed and / or the casting temperature changes during the casting operation, the taper is adjusted.
- the molds are equipped with devices for measuring the cooling capacity in the narrow side walls and with adjustment devices for the narrow sides.
- This object is achieved in that the amount of heat dissipated on the narrow sides during their adjustment is measured and the narrow sides are adjusted only so quickly that the amount of heat dissipated does not fall below a predetermined amount H and H according to the formula is calculated, where t is the dwell time (in min) of a strand element in the mold, 6000 is a constant (in kcal. min o.5. m - 2 ) and B is the width of the narrow side (in m).
- the above-mentioned dwell time is calculated from the effective mold length L (in m) divided by the casting speed V (in m ⁇ min- 1 ).
- the effective mold length L (in m) is the length from the steel bath level in the mold to the end of the mold. Since both the effective mold length L and the casting speed V are known, the amount of heat that can advantageously be dissipated is easy to calculate.
- Running casting operation is understood to mean that during the adjustment of the narrow sides to broaden the format, there is a flow of steel into the plate mold from the upstream casting vessel.
- the predetermined amount for the amount of heat to be dissipated is such that if the strand shell is in sufficient contact with the mold wall, it is strong enough at the end of the mold to prevent bulging or the occurrence of breakthroughs because measuring the amount of heat dissipated during the adjustment of the narrow sides Indicator for the contact of the narrow side with the strand formed and thus for the shell growth in the mold is given.
- the adjustment of the adjustment speed is advantageously carried out fully automatically.
- Devices for determining the amounts of heat actually removed are known per se, as are devices for adjusting the narrow sides.
- a received actual value signal of the amount of heat dissipated on the narrow sides can be compared with the target value signal corresponding to the predetermined amount of the amount of heat to be dissipated and the resulting output signal can be used to control the adjustment speed.
- the method can also only be used for setting the adjustment speed from one of the two opposite narrow sides, only the thermal output measurement of the moving side serving as a control variable.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Saccharide Compounds (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Einstellung der Verstellgeschwindigkeit von Schmalseiten einer Plattenkokille beim Stahlstranggiessen, wobei während des laufenden Stranggiessenbetriebes der Abstand zwischen den Schmalseiten vergrössert wird.The invention relates to a method for adjusting the adjustment speed of narrow sides of a plate mold in continuous steel casting, the distance between the narrow sides being increased during the continuous casting operation.
Es ist bekannt, die Position der Kokillenwände einer Plattenkokille, insbesondere der Schmalseiten, während des laufenden Giessbetriebes zu verändern und dadurch sowohl eine Formatanpassung als auch eine Einstellung der Konizität vorzunehmen. Um jedoch die Länge des sogenannten Übergangsstükkes des Stranges - das ist der Strangteil zwischen zuerst gegossenem und neu zu giessendem Format - und damit die Verluste möglichst klein zu halten, muss die Verstellgeschwindigkeit möglichst hoch gewählt werden. Dabei besteht aber insbesondere beim Verstellen nach aussen die Gefahr, dass Ausbauchungen und Durchbrücke am Strang entstehen können.It is known to change the position of the mold walls of a plate mold, in particular the narrow sides, during the ongoing casting operation and thereby to carry out both a format adjustment and an adjustment of the taper. However, in order to keep the length of the so-called transition piece of the strand - that is the part of the strand between the first cast and the new cast format - and thus keep the losses as small as possible, the adjustment speed must be chosen as high as possible. However, there is a particular risk that bulges and bridging can occur on the strand, particularly when adjusting to the outside.
Es ist weiters bekannt, die Schmalseiten einer Plattenkokille zum Giessen von Brammensträngen mit einer Geschwindigkeit von höchstens 2 mm/sek unter Änderung ihres gegenseitigen Abstandes zu verstellen. Dies gibt jedoch keinen Hinweis, auf welche Art und mit welcher Geschwindigkeit die Verstellung nun tatsächlich durchgeführt werden sollte.It is also known to adjust the narrow sides of a plate mold for casting slab strands at a speed of at most 2 mm / sec while changing their mutual distance. However, this gives no indication of the type and speed at which the adjustment should actually be carried out.
So ist es offensichtlich, dass Störungen, wie z.B. Durchbrüche, auch innerhalb dieses angegebenen Geschwindigkeitsbereichs auftreten können.So it is obvious that disturbances such as Breakthroughs can also occur within this specified speed range.
Es ist weiters ein Verfahren zum Steuern der Kühlleistung von Schmalseitenwänden bei Plattenkokillen beim Stranggiessen bekannt (CH-PS 558 687), bei dem vor Giessbeginn die Konizität der Kokille auf einen, der vorgesehenen Giessgeschwindigkeit und/ oder der Giesstemperatur angepassten Soll-Wert eingestellt wird und bei Veränderungen der Giessgeschwindigkeit und/oder der Giesstemperatur während des Giessbetriebes die Konizität nachgestellt wird. Dazu werden die Kokillen mit Einrichtungen zum Messen der Kühlleistung in den Schmalseitenwänden sowie mit Verstelleinrichtungen für die Schmalseiten ausgerüstet.A method for controlling the cooling capacity of narrow side walls in plate molds during continuous casting is also known (CH-PS 558 687), in which the conicity of the mold is set to a desired value adapted to the intended casting speed and / or the casting temperature before the start of casting if the casting speed and / or the casting temperature changes during the casting operation, the taper is adjusted. For this purpose, the molds are equipped with devices for measuring the cooling capacity in the narrow side walls and with adjustment devices for the narrow sides.
Es istAufgabe der Erfindung, ein Verfahren zur Einstellung der Verstellgeschwindigkeit von Schmalseiten einer Plattenkokille, insbesondere zum Giessen von rechteckigen Formaten. zu schaffen, das es gestattet, das Übergangsstück klein zu halten, aber dabei die Verstellung der Kokillenschmalseiten nach aussen, während des laufenden Giessbetriebes sicher und ohne negative Auswirkungen, wie z.B. Strangausbauchungen und Durchbrüche, durchzuführen.It is an object of the invention to provide a method for adjusting the speed of adjustment of narrow sides of a plate mold, in particular for casting rectangular formats. to create, which makes it possible to keep the transition piece small, but the adjustment of the mold narrow sides to the outside, during the ongoing casting operation safely and without negative effects, such as Strand bulges and breakthroughs.
Diese Aufgabe wird dadurch gelöst, dass die an den Schmalseiten während ihrer Verstellung abgeführte Wärmemenge gemessen und die Schmalseiten nur so schnell verstellt werden, dass die abgeführte Wärmemenge einen vorgegebenen Betrag H nicht unterschreitet und H nach der Formel
Mit diesem Verfahren gelingt es, die Schmalseiten nach aussen auf ein neues, grösseres Format während des laufenden Giessbetriebes ohne nachteilige Folgen mit einer optimalen Geschwindigkeit zu verstellen. Unter laufendem Giessbetrieb wird verstanden, dass während der Verstellung der Schmalseiten zur Formatverbreiterung ein Stahlzufluss in die Plattenkokille vom vorgeordneten Giessgefäss aus erfolgt. Der vorgegebene Betrag für die abzuführende Wärmemenge ist derart, dass durch ausreichendes Anliegen der Strangschale an der Kokillenwand diese am Kokillenende genügend stark ist, um ein Ausbauchen bzw. Auftreten von Durchbrüchen zu vermeiden, weil durch das Messen der während der Verstellung abgeführten Wärmemenge der Schmalseiten ein Indikator für das Anliegen der Schmalseite an dem gebildeten Strang und damit für das Schalenwachstum in der Kokille gegeben wird.With this process it is possible to adjust the narrow sides to a new, larger format while the casting operation is running, without adverse consequences, at an optimal speed. Running casting operation is understood to mean that during the adjustment of the narrow sides to broaden the format, there is a flow of steel into the plate mold from the upstream casting vessel. The predetermined amount for the amount of heat to be dissipated is such that if the strand shell is in sufficient contact with the mold wall, it is strong enough at the end of the mold to prevent bulging or the occurrence of breakthroughs because measuring the amount of heat dissipated during the adjustment of the narrow sides Indicator for the contact of the narrow side with the strand formed and thus for the shell growth in the mold is given.
Die Einstellung der Verstellgeschwindigkeit wird vorteilhaft vollautomatisch durchgeführt. Einrichtungen zur Bestimmung der tatsächlich abgeführten Wärmemengen sind an sich bekannt, ebenso wie Vorrichtungen zur Verstellung der Schmalseiten. Ein erhaltenes Ist-Wert-Signal der abgeführten Wärmemenge an den Schmalseiten kann mit dem Soll-Wert-Signal entsprechend dem vorgegebenen Betrag der abzuführenden Wärmemenge verglichen werden und das entstehende Ausgangssignal zur Steuerung der Verstellgeschwindigkeit dienen.The adjustment of the adjustment speed is advantageously carried out fully automatically. Devices for determining the amounts of heat actually removed are known per se, as are devices for adjusting the narrow sides. A received actual value signal of the amount of heat dissipated on the narrow sides can be compared with the target value signal corresponding to the predetermined amount of the amount of heat to be dissipated and the resulting output signal can be used to control the adjustment speed.
Es ist klar, dass das Verfahren auch für die Einstellung der Verstellgeschwindigkeit nur von einer der beiden gegenüberliegenden Schmalseiten herangezogen werden kann, wobei nur die Wärmeleistungsmessung der bewegten Seite als Kontrollgrösse dient.It is clear that the method can also only be used for setting the adjustment speed from one of the two opposite narrow sides, only the thermal output measurement of the moving side serving as a control variable.
Claims (1)
- Method of setting the speed of displacement of the narrow sides of a plate mould in the continuous casting of steel, wherein the distance between the narrow sides is increased while continuous casting is proceeding, characterized in that the quantity of heat dissipated at the narrow sides during their displacement is measured and the narrow sides are displaced only at a speed such thatthe quantity of heat dissipated does not fall below a predetermined amount H, and H is calculated in accordance with the formula
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT80105538T ATE4964T1 (en) | 1979-09-21 | 1980-09-16 | METHOD OF ADJUSTING THE ADJUSTMENT SPEED OF NARROW SIDES OF A PLATE MOLD IN STEEL CONTINUOUS CASTING. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH8564/79 | 1979-09-21 | ||
| CH856479A CH639885A5 (en) | 1979-09-21 | 1979-09-21 | PROCEDURE FOR ADJUSTING THE ADJUSTMENT SPEED OF THE NARROW SIDE(S) OF A PLATE MILL. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0026390A1 EP0026390A1 (en) | 1981-04-08 |
| EP0026390B1 true EP0026390B1 (en) | 1983-10-12 |
Family
ID=4342001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80105538A Expired EP0026390B1 (en) | 1979-09-21 | 1980-09-16 | Process for setting the adjustment speed of the narrow sides of a plate-ingot mould during the continuous casting of steel |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4304290A (en) |
| EP (1) | EP0026390B1 (en) |
| JP (1) | JPS5653851A (en) |
| AT (1) | ATE4964T1 (en) |
| AU (1) | AU535406B2 (en) |
| BR (1) | BR8006027A (en) |
| CA (1) | CA1164624A (en) |
| CH (1) | CH639885A5 (en) |
| DE (1) | DE3065298D1 (en) |
| ZA (1) | ZA805746B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT372891B (en) * | 1981-12-07 | 1983-11-25 | Ver Edelstahlwerke Ag | METHOD FOR HORIZONTAL CONTINUOUS CASTING OF METALS AND ALLOYS, ESPECIALLY STEELS |
| CH658009A5 (en) * | 1982-02-12 | 1986-10-15 | Concast Service Union Ag | METHOD AND PLATE CHILL FOR COOLING AND SUPPORTING A STRAND IN A PLATE CHOCOLATE IN A STEEL MOLDING PLANT. |
| US4580614A (en) * | 1983-01-31 | 1986-04-08 | Vereinigte Edelstahlwerke Aktiengesellschaft | Cooling apparatus for horizontal continuous casting of metals and alloys, particularly steels |
| FR2541606A1 (en) * | 1983-02-28 | 1984-08-31 | Fives Cail Babcock | Method for modifying the width of a continuously-cast slab without interrupting casting |
| FR2569361B1 (en) * | 1984-08-24 | 1987-02-27 | Fives Cail Babcock | METHOD FOR ADJUSTING THE INCLINATION OF THE SMALL SIDES OF A SLABS CONTINUOUS LINGOTIERE |
| JPS6213250A (en) * | 1985-03-05 | 1987-01-22 | Nippon Kokan Kk <Nkk> | Method for changing width during continuous casting |
| WO1992002324A1 (en) * | 1990-08-09 | 1992-02-20 | Voest-Alpine International Corp. | An improved method for controlling the clamping forces exerted on a continuous casting mold |
| DE4117073A1 (en) * | 1991-05-22 | 1992-11-26 | Mannesmann Ag | TEMPERATURE MEASUREMENT SLAM CHOCOLATE |
| US5205345A (en) * | 1991-08-07 | 1993-04-27 | Acutus Industries | Method and apparatus for slab width control |
| US6857464B2 (en) | 2002-09-19 | 2005-02-22 | Hatch Associates Ltd. | Adjustable casting mold |
| JP6853165B2 (en) | 2017-11-29 | 2021-03-31 | 株式会社スギノマシン | Jet device |
| JP6855399B2 (en) | 2018-01-26 | 2021-04-07 | 株式会社スギノマシン | Nozzle runout measurement method and its equipment |
| JP6487084B1 (en) | 2018-03-07 | 2019-03-20 | 株式会社スギノマシン | Nozzle inspection apparatus and nozzle inspection method |
| JP6875447B2 (en) | 2019-04-15 | 2021-05-26 | 株式会社スギノマシン | How to operate the pump device and pump |
| JP6806875B2 (en) | 2019-04-16 | 2021-01-06 | 株式会社スギノマシン | Cleaning method and cleaning equipment |
| US11458511B2 (en) | 2019-07-05 | 2022-10-04 | Sugino Machine Limited | Cleaning apparatus and cleaning method |
| JP6830170B1 (en) | 2020-02-25 | 2021-02-17 | 株式会社スギノマシン | Cleaning machine and cleaning method |
| JP6870132B1 (en) | 2020-03-09 | 2021-05-12 | 株式会社スギノマシン | Cleaning method and washing machine for objects |
| JP7034352B1 (en) | 2021-03-25 | 2022-03-11 | 株式会社スギノマシン | nozzle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH552423A (en) * | 1972-04-18 | 1974-08-15 | Concast Ag | METHOD AND DEVICE FOR CONTROLLING HEAT EXTRACTION IN KOKILLEN DURING CONTINUOUS CASTING. |
| CH558687A (en) * | 1973-03-30 | 1975-02-14 | Concast Ag | PROCESS FOR CONTROLLING THE COOLING CAPACITY OF NARROW SIDE WALLS IN PLATE CHILLES DURING CONTINUOUS CASTING AND PLATE CHILLES FOR CARRYING OUT THE PROCESS. |
| DE2440273C2 (en) * | 1974-08-20 | 1976-09-30 | Mannesmann Ag | PROCEDURE FOR CONTROLLING THE CONTINUOUS CASTING PROCESS DURING STEEL PASTING, AND ARRANGEMENT FOR PERFORMING THE PROCESS |
| JPS5340631A (en) * | 1976-09-27 | 1978-04-13 | Kawasaki Steel Co | Method of changing width of casting in continuous casting |
| JPS5340630A (en) * | 1976-09-27 | 1978-04-13 | Kawasaki Steel Co | Method of augmenting width of cast piece in continuous casting |
-
1979
- 1979-09-21 CH CH856479A patent/CH639885A5/en not_active IP Right Cessation
-
1980
- 1980-08-11 US US06/176,706 patent/US4304290A/en not_active Expired - Lifetime
- 1980-09-16 AT AT80105538T patent/ATE4964T1/en not_active IP Right Cessation
- 1980-09-16 DE DE8080105538T patent/DE3065298D1/en not_active Expired
- 1980-09-16 EP EP80105538A patent/EP0026390B1/en not_active Expired
- 1980-09-17 AU AU62495/80A patent/AU535406B2/en not_active Ceased
- 1980-09-17 ZA ZA00805746A patent/ZA805746B/en unknown
- 1980-09-19 JP JP12943180A patent/JPS5653851A/en active Granted
- 1980-09-19 BR BR8006027A patent/BR8006027A/en unknown
- 1980-09-19 CA CA000360592A patent/CA1164624A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BR8006027A (en) | 1981-03-31 |
| AU6249580A (en) | 1981-04-09 |
| US4304290A (en) | 1981-12-08 |
| CH639885A5 (en) | 1983-12-15 |
| AU535406B2 (en) | 1984-03-22 |
| JPS5653851A (en) | 1981-05-13 |
| ZA805746B (en) | 1981-09-30 |
| DE3065298D1 (en) | 1983-11-17 |
| EP0026390A1 (en) | 1981-04-08 |
| CA1164624A (en) | 1984-04-03 |
| ATE4964T1 (en) | 1983-10-15 |
| JPS6147623B2 (en) | 1986-10-20 |
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