EP0008692A1 - Method to avoid damage to cast guide elements in a continuous steel casting assembly - Google Patents
Method to avoid damage to cast guide elements in a continuous steel casting assembly Download PDFInfo
- Publication number
- EP0008692A1 EP0008692A1 EP79102851A EP79102851A EP0008692A1 EP 0008692 A1 EP0008692 A1 EP 0008692A1 EP 79102851 A EP79102851 A EP 79102851A EP 79102851 A EP79102851 A EP 79102851A EP 0008692 A1 EP0008692 A1 EP 0008692A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- strand guide
- pull
- elements
- guide
- 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 20
- 230000006378 damage Effects 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 10
- 239000010959 steel Substances 0.000 title claims abstract description 10
- 238000005266 casting Methods 0.000 title description 6
- 238000009749 continuous casting Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- 238000003466 welding Methods 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
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
Definitions
- the invention relates to a method for avoiding damage to strand guide elements of a continuous casting plant for steel.
- the present invention when using the method of conveying a broken strand without interrupting the pull-out process or when pulling out a strand bulged during a standstill, avoids the disadvantages associated with possible overloading of system parts, described above. It sets itself the task of preventing the destruction of guide elements such as rollers or deformations of elements of the support structure leading to deviations in the strand guide geometry, with the associated quality-reducing influences on the cast product, during the pull-out process.
- this object is achieved in that during the pulling out of strands which are undesirably deformed or welded by leaked steel with strand guide parts, the pull-out forces acting there are determined at selected points of the strand guide, the measured values are compared with predetermined maximum values which prevent damage to the strand guide, and at the same Exceeding an impulse to interrupt the pull-out process is given.
- This procedure eliminates the risk of damage to the elements of the strand guide due to excessive stress. It is possible to use strongly dimensioned drivers to pull out a strand which is stuck in the strand guide or tends to get stuck, while avoiding overloading of endangered system parts.
- the pull-out force of these drivers can be set immediately and risk-free to the highest possible values, matched to the maximum permissible load index of the material used. A dynamic, if necessary jerky, pulling away of a strand which is welded with system parts is facilitated.
- the stresses occurring in the support arm of the first zone are measured.
- This drawing shows a continuous casting installation, consisting of a continuous mold 1 with a downstream strand guide subdivided into individual segments, and a subsequent drive funnel 2 with driven and non-driven rollers 3.
- the first zone 4 of this strand guide is composed of a cooling grid 5 and one several roller pairs existing section 6 of the roller guide. It is supported by means of trunnions 7 in bearing shells 8 of a support arm 10 fastened to the support structure 9 of the strand guide.
- the strand has deformations that hinder undisturbed conveying out and generate forces directed against the direction of extraction, or if the strand is broken up with hardened steel with strand guide parts, for example connected to the cooling grill 5 and therefore immobile, it occurs during the pulling out of ordinary drivers to cause the drive rollers to slip. This is avoided with a larger dimensioned leveling unit and the forces required to break the connection can be completely transferred to the strand.
- strain gauges 12 attached to the upper side (tension side) of the support arm 10
- tensile stresses occurring therein are determined, the measurement values are conducted via a line 13 to a measuring and control device 14 and there with predetermined maximum values which are below those values. which could lead to a plastic deformation of the support structure.
- the control and regulating element 14 gives an impulse to interrupt the pull-out process. This prevents damage to strand guide parts.
- an optical and / or acoustic alarm signal can also be given, as a result of which the operating personnel are made aware of a possible overload situation and are prompted to take action.
- strain gauges 12 other voltage measuring devices, such as Load cells, find use.
- the arrangement of the strain gauge is not limited to the top of the load arm 10 of the first zone 4, but can be freely selected wherever an overload of strand guide parts and / or support guide elements leading to damage must be feared. For example, all leadership roles. pairs can be secured against bulging strands in this way.
- the setting of the rollers can be controlled with the aid of the overload safeguards described above.
- Other geometrical deviations in the continuous casting installation which lead to damage can also be caused by exceptional thermal delay, indicated and appropriate countermeasures are taken. It should be pointed out that the invention is not only applicable to the continuous slab caster shown in the figure, but can be used in any continuous caster with continuous molds.
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Vermeidung von Beschädigungen an Strangführungselementen einer Stranggiessanlage für Stahl.The invention relates to a method for avoiding damage to strand guide elements of a continuous casting plant for steel.
Beim Stranggiessen von Stahl kommt es mitunter zu unerwünschten Verformungen des Stranges, vornehmlich dann, wenn Betriebsstörungen zu einem Giessunterbruch zwingen. Geht ein solcher Giessunterbruch über einen längeren Zeitraum, ist die noch dünne Strangkruste aufgrund ungenügender Festigkeit nicht fähig, entlang ungestützter Abschnitte, z.B. zwischen Führungsrollenpaaren, dem ferrostatischen Druck des flüssigen Strangkernes zu widerstehen. In einem solchen Fall kommt es zu Ausbauchungen der Strangkruste. Vergeht bis zum Wiederanfahren der Anlage ein zu grosses Zeitintervall, in welchem die Durcherstarrung des Stranges weiter fortschreitet, ist es oftmals nicht mehr möglich, solche Ausbauchungen mit Hilfe der Führungsrollen gegen den Widerstand des teilweise erstarrten Stranges wieder hineinzudrücken. Hierdurch kann es während des Ausziehens des Stranges zu dessen Steckenbleiben zwischen den Führungsrollen, verbunden mit einer Ueberlastung derselben bzw. von Stützkonstruktionsteilen kommen und bei gleichbleibender Ausziehkraft zu deren Deformation bzw. Zerstörung führen.When steel is continuously cast, undesirable deformations of the strand sometimes occur, especially when operational disruptions force the casting to be interrupted. If such a casting interruption lasts for a longer period of time, the still thin strand crust is not able to withstand the ferrostatic pressure of the liquid strand core due to insufficient strength along unsupported sections, for example between pairs of guide rollers. In such a case, the strand crust bulges. If a too long time interval elapses before the system starts up again, during which the solidification of the strand continues, it is often no longer possible to push such bulges back in with the help of the guide rollers against the resistance of the partially solidified strand. As a result, the strand can become stuck between the guide rollers, connected to an overloading of the same or of supporting structure parts, and remain the same while the strand is being pulled out the pulling force lead to their deformation or destruction.
Eine weitere, nicht immer zu verhindernde Störung des normalen Giessbetriebes ist ein Durchbruch, zumeist in einem Bereich des erst peripher erstarrten Stranges unmittelbar unterhalb der Kokille. Hiermit sind in der Regel unangenehme Folgeerscheinungen verbunden, da eine oftmals grosse Stahlmenge in die Sekundärkühlzone der Anlage ausfliesst und in den sich dort befindlichen Anlagenteilen, wie Stütz-und Führungsrollen, Stützkonstruktionsteilen etc. erstarrt. Daraus ergeben sich fast immer-erhebliche, kostspielige Reparaturen verursachende Schäden. Obendrein hat ein Durchbruch in den allermeisten Fällen einen Abbruch des Giessbetriebes zur Folge.Another disruption to normal casting operation, which cannot always be prevented, is a breakthrough, usually in a region of the strand which has solidified only peripherally, immediately below the mold. This is usually associated with unpleasant consequences, since a large amount of steel often flows into the secondary cooling zone of the system and solidifies in the system components located there, such as support and guide rollers, support structure parts, etc. This almost always results in significant, costly repairs causing damage. On top of that, a breakthrough in the vast majority of cases results in the casting operation being shut down.
Die Konsequenzen eines solchen Abbruches sind üblicherweise neben zeitaufwendiger Beseitigung der direkten Folgeschäden des Durchbruches, insbesondere irreparable Verformungen von Strangführungsrollen durch einseitige, lokale Ueberhitzung der mit dem stillstehenden, heissen Strang in Berührung stehenden Rollen. Mit dem Wiederanfahren ergeben diese Verformungen unrunden Lauf der Rollen und können aufgrund ungleichmässiger Beanspruchung der Rollenlager deren Zerstörung bewirken bzw. zum Rollenbruch führen. Obendrein führt unrunder Lauf der Führungsrollen durch die gleichsinnige Verformung einander gegenüberliegender Rollen zu periodisch ungleichmässiger Krafteinwirkung auf den Strang. An solchen Stellen verstärkten Druckes können sich Abwalzungen, verbunden mit Rissbildungen im Strang ergeben.The consequences of such a termination are usually, in addition to time-consuming elimination of the direct consequential damage caused by the breakthrough, in particular irreparable deformations of strand guide rollers due to one-sided, local overheating of the rollers in contact with the stationary, hot strand. When restarted, these deformations cause the rollers to run out of round and, due to the uneven loading of the roller bearings, can destroy them or cause them to break. On top of that, out-of-round running of the guide rollers leads to periodically uneven application of force to the strand due to the deformation of opposing rollers in the same direction. At such points of increased pressure, rolling can occur, combined with crack formation in the strand.
In der Praxis wird versucht, die sich durch einen Abbruch des Ausziehvorganges ergebenden, oben geschilderten Nachteile durch folgende Verfahrensweise zu vermeiden. Bei unterbrochener Stahlzufuhr in die Kokille wird der Strang gegen die den Ausziehvorgang behindernden Kräfte, hervorgerufen durch unregelmässig geformte oder mit Anlagenteilen verschweisste Stränge, mit stark dimensionierten Treibern ohne Unterbrechung vollständig herausgezogen. Hierbei kann es sich ergeben, dass aufgrund sehr starker, durch einfaches Losreissen nicht mehr lösbarer Verschweissungen des Stranges mit den Strangführungselementen wie Rollen, Gittern etc., die grossen Ausziehkräfte direkt auf die Stütz-und Lagerelemente der Strangführung wirken und hier durch Ueberlastung zu bleibenden Verformungen und Beschädigungen führen. So kann beispielsweise bei einer durch übergelaufenen Stahl eingegossenen, sogenannten ersten Zone der Strangführung eine solche Ueberlastung zu einer Deformation der Auflagerarme und der Auflagerzapfen der l. Zone und damit zu Abweichungen in der Geometrie der Strangführung führen. Diese bedingen kostspielige, zeitaufwendige Reparaturen. Ein Vorteil des oben beschriebenen Verfahrens, welches einen Stillstand des Stranges bei einem Durchbruch vermeiden will, gegenüber der herkömmlichen Giesspraxis, bei welcher man den Strang erkalten lässt, ist folglich in einem solchen Fall nicht mehr gegeben. Abweichungen, welche nicht immer sofort entdeckt werden, führen obendrein zu Rissen im Gussprodukt und damit zu Qualitätsminderungen.In practice, attempts are made to avoid the disadvantages described above which result from the termination of the pull-out process by the following procedure. If the steel supply to the mold is interrupted, the strand becomes against the forces hindering the pulling-out process, caused by irregularly shaped strands or strands welded to system parts, completely pulled out without interruption with strongly dimensioned drivers. This can result in the fact that due to very strong welds of the strand to the strand guide elements such as rollers, grids, etc., which cannot be detached simply by tearing them loose, the large pull-out forces act directly on the support and bearing elements of the strand guide and here deformations resulting from overloading and cause damage. For example, in the case of a so-called first zone of the strand guide cast in by overflowing steel, such an overload can lead to a deformation of the support arms and the support pins of the 1st Zone and thus lead to deviations in the geometry of the strand guide. These require expensive, time-consuming repairs. An advantage of the method described above, which wants to prevent the strand from coming to a standstill in the event of a breakthrough, compared to conventional casting practice, in which the strand is allowed to cool, is therefore no longer given in such a case. Deviations, which are not always discovered immediately, also lead to cracks in the cast product and thus to a reduction in quality.
Die vorliegende Erfindung will, bei Anwendung der Verfahrensweise des Ausförderns eines durchgebrochenen Stranges ohne Unterbrechung des Ausziehvorganges bzw. beim Ausziehen eines während eines Stillstandes ausgebauchten Stranges die mit einer möglichen Ueberlastung von Anlagenteilen verbundenen, oben geschilderten Nachteile vermeiden. Sie stellt sich die Aufgabe, Zerstörungen von Führungselementen wie Rollen bzw. zu Abweichungen in der Strangführungsgeometrie führende Deformationen von Elementen der Stützkonstruktion, mit damit verbundenen qualitätsmindernden Einflüssen auf das Gussprodukt, während des Ausziehvorganges zu verhindern.The present invention, when using the method of conveying a broken strand without interrupting the pull-out process or when pulling out a strand bulged during a standstill, avoids the disadvantages associated with possible overloading of system parts, described above. It sets itself the task of preventing the destruction of guide elements such as rollers or deformations of elements of the support structure leading to deviations in the strand guide geometry, with the associated quality-reducing influences on the cast product, during the pull-out process.
Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass während des Ausziehens unerwünscht verformter oder durch ausgelaufenen Stahl mit Strangführungsteilen verschweisster Stränge an ausgewählten Stellen der Strangführung die dort wirkenden Ausziehkräfte ermittelt, die ermittelten Messwerte mit vorgegebenen, eine Beschädigung der Strangführung vermeidenden Höchstwerten verglichen werden, und bei deren Ueberschreiten ein Impuls zur Unterbrechung des Ausziehvorganges gegeben wird.According to the invention, this object is achieved in that during the pulling out of strands which are undesirably deformed or welded by leaked steel with strand guide parts, the pull-out forces acting there are determined at selected points of the strand guide, the measured values are compared with predetermined maximum values which prevent damage to the strand guide, and at the same Exceeding an impulse to interrupt the pull-out process is given.
Mit diesem Verfahren wird das Risiko einer Beschädigung von Elementen der Strangführung durch Ueberbeanspruchung ausgeschaltet. Es wird ermöglicht, zum Ausziehen eines in der Strangführung festsitzenden bzw. zum Steckenbleiben neigenden Stranges unter Vermeidung einer Ueberlastung gefährdeter Anlagenteile stark dimensionierte Treiber einzusetzen. Die Ausziehkraft dieser Treiber kann sofort und risikolos auf höchstmögliche Werte, abgestimmt auf maximal zulässige Belastungskennzahlen des beanspruchten Werkstoffes eingestellt werden. Ein dynamisches, falls erforderlich ruckweises, das Losreissen eines mit Anlagenteilen verschweissten Stranges begünstigendes Ausziehen wird ermöglicht.This procedure eliminates the risk of damage to the elements of the strand guide due to excessive stress. It is possible to use strongly dimensioned drivers to pull out a strand which is stuck in the strand guide or tends to get stuck, while avoiding overloading of endangered system parts. The pull-out force of these drivers can be set immediately and risk-free to the highest possible values, matched to the maximum permissible load index of the material used. A dynamic, if necessary jerky, pulling away of a strand which is welded with system parts is facilitated.
Wird ein Losreissen jedoch aufgrund zu kräftiger Verschweissungen verhindert und die vorgegebenen Höchstwerte überschritten, wird ein Impuls zum Unterbrechen des Ausziehvorganges gegeben. Die den Ausziehvorgang behindernden Verschweissungen werden in einem solchen Fall möglichst schnell von Hand mit geeigneten Vorrichtungen entfernt und das Ausziehen fortgesetzt. Dadurch, dass ein normales Ausfördern unmöglich machendes Erkalten des Stranges vermieden wird, entfallen aufwendige Massnahmen zum Freimachen der Strangführung,wie Zerteilen des Stranges durch Brennschneiden etc. Die Folgeerscheinungen eines Durchbruches werden wesentlich schneller bereinigt und der Zeitraum bis zu einer erneuten Betriebsbereitschaft der Anlage entscheidend verkürzt.However, if tearing is prevented due to excessive welding and the specified maximum values are exceeded, an impulse is given to interrupt the pull-out process. In such a case, the welds which hinder the pull-out process are removed as quickly as possible by hand using suitable devices and the pull-out is continued. Because normal conveying of the strand, which makes it impossible to remove it, is avoided, there is no need for costly measures to free the strand guide, such as cutting the strand by flame cutting, etc. The consequences of a breakthrough are cleared up much more quickly and the period up to egg The operational readiness of the system is significantly reduced.
Nach einem vorteilhaften Schritt des erfindungsgemässen Verfahrens werden die im Tragarm der ersten Zone auftretenden Spannungen gemessen.After an advantageous step of the method according to the invention, the stresses occurring in the support arm of the first zone are measured.
Das Verfahren wird anhand einer schematischen Zeichnung eines Beispiels näher beschrieben:The method is described in more detail using a schematic drawing of an example:
Diese Zeichnung zeigt eine Stranggiessanlage, bestehend aus einer Durchlaufkokille 1 mit nachgeordneter, in einzelne Segmente unterteilter, gebogener Strangführung und einem anschliessenden Treibrichter 2 mit angetriebenen und nicht angetriebenen Rollen 3. Die erste Zone 4 dieser Strangführung setzt sich zusammen aus einem Kühlgitter 5 und einem aus mehreren Rollenpaaren bestehenden Abschnitt 6 der Rollenführung. Sie ist mittels Lagerzapfen 7 in Lagerschalen 8 eines an der Stützkonstruktion 9 der Strangführung befestigten Tragarmes 10 gelagert.This drawing shows a continuous casting installation, consisting of a continuous mold 1 with a downstream strand guide subdivided into individual segments, and a
Stahlschmelze wird in die Kokille 1 eingefüllt, nicht dargestellt, und ein teilweise erstarrter Strang 11 kontinuierlich durch die angetriebenen Rollen 3 aus der Kokille 1 ausgezogen und in der Strangführung geführt und gestützt.Steel melt is poured into the mold 1, not shown, and a partially solidified
Weist der Strang Verformungen auf, welche ein ungestörtes Ausfördern behindern und gegen die Ausziehrichtung gerichtete Kräfte erzeugen bzw. ist der Strang aufgrund ausgebrochenen, sich verfestigenden Stahls mit Strangführungsteilen, z.B. mit dem Kühlgitter 5 verbunden und damit unbeweglich, kommt es während des Ausziehens bei gewöhnlichen Treibern zu einem Durchrutschen der Treibrollen. Mit einem stärker dimensionierten Treibricht-Aggregat wird dies vermieden, und die zum Losreissen der Verbindung benötigten Kräfte können zur Gänze auf den Strang übertragen werden.If the strand has deformations that hinder undisturbed conveying out and generate forces directed against the direction of extraction, or if the strand is broken up with hardened steel with strand guide parts, for example connected to the
Mit Hilfe von an der Oberseite (Zugseite) des Tragarms 10 angebrachten Dehnungsmess-Streifen 12 werden in diesem auftretende Zugspannungen ermittelt, die Messwerte über eine Leitung 13 zu einem Mess- und Regelgerät 14 geleitet und dort mit vorgegebenen Höchstwerten, welche unter denjenigen Werten liegen, welche zu einer plastischen Verformung der Stützkonstruktion führen könnten, verglichen. Im Fall, dass der Widerstand des festsitzenden bzw. verformten Stranges so gross ist, dass die anzuwendenden Kräfte über diesen Höchstwerten liegen würden, wird vom Steuer- und Regelorgan 14 ein Impuls zum Unterbrechen des Ausziehvorganges gegeben. Hierdurch wird eine Beschädigung von Strangführungsteilen vermieden. Selbstverständlich kann anstelle eines Abbruches durch diesen Impuls auch ein optisches und/oder akustisches Alarmsignal gegeben werden, wodurch das Bedienungspersonal auf eine mögliche Ueberlastsituation aufmerksam gemacht und zum Handeln aufgefordert wird. Anstelle von Dehnungsmess-Streifen 12 können andere, Spannungen erfassende Messeinrichtungen, wie z.B. Lastzellen, Verwendung finden.With the help of strain gauges 12 attached to the upper side (tension side) of the
Die Anordnung vom Dehnungsmess-Streifen bleibt nicht auf die Oberseite des Lastarmes 10 der ersten Zone 4 beschränkt, sondern kann frei wählbar überall dort angebracht werden, wo eine zu Beschädigungen führende Ueberlastung von Strangführungsteilen und/oder Stützführungselementen befürchtet werden muss. So können z.B. alle Führungsrollen- . paare gegen Ueberlastung durch ausgebauchte Stränge auf diese Art und Weise gesichert werden. Im drohenden Ueberlastfall kann z.B. die Anstellung der Rollen mit Hilfe von oben beschriebenen Ueberlastsicherungen gesteuert werden. Auch können sonstige, zu Beschädigungen führende geometrische Abweichungen in der Stranggiessanlage, bedingt durch aussergewöhnlichen thermischen Verzug, angezeigt und dadurch entsprechende Gegenmassnahmen ergriffen werden. Es sei darauf hingewiesen, dass die Erfindung nicht allein auf die im Bild dargestellte Brammenstranggiessanlage anwendbar ist, sondern bei beliebigen Stranggiessmaschinen mit Durchlaufkokillen Verwendung finden kann.The arrangement of the strain gauge is not limited to the top of the
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT79102851T ATE7T1 (en) | 1978-08-11 | 1979-08-08 | METHOD OF PREVENTING DAMAGE TO STRING GUIDE ELEMENTS IN A CONTINUOUS STEEL CASTING PLANT |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH8558/78 | 1978-08-11 | ||
| CH855878A CH630821A5 (en) | 1978-08-11 | 1978-08-11 | METHOD FOR AVOIDING DAMAGE TO STRING GUIDE ELEMENTS OF A STEEL CASTING SYSTEM. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0008692A1 true EP0008692A1 (en) | 1980-03-19 |
| EP0008692B1 EP0008692B1 (en) | 1981-01-28 |
| EP0008692B2 EP0008692B2 (en) | 1986-04-02 |
Family
ID=4341930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79102851A Expired EP0008692B2 (en) | 1978-08-11 | 1979-08-08 | Method to avoid damage to cast guide elements in a continuous steel casting assembly |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4317482A (en) |
| EP (1) | EP0008692B2 (en) |
| JP (1) | JPS5524800A (en) |
| AT (1) | ATE7T1 (en) |
| BR (1) | BR7905115A (en) |
| CA (1) | CA1130982A (en) |
| CH (1) | CH630821A5 (en) |
| DE (1) | DE2960098D1 (en) |
| ES (1) | ES483927A1 (en) |
| ZA (1) | ZA794099B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049238A2 (en) * | 1980-10-01 | 1982-04-07 | Böhler Aktiengesellschaft | Method of controlling the discharge of billets |
| EP0111000A1 (en) * | 1982-05-31 | 1984-06-20 | Nippon Kokan Kabushiki Kaisha | Method of monitoring for damage to solidified shell of metal casting produce during removal of casting from horizontal continuous casting machine |
| CN110252982A (en) * | 2019-06-28 | 2019-09-20 | 上海二十冶建设有限公司 | Billet caster fan-shaped section installation adjusting method |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT378707B (en) * | 1983-01-11 | 1985-09-25 | Voest Alpine Ag | METHOD FOR MONITORING A CONTINUOUS CASTING PLANT |
| JPS60257958A (en) * | 1984-06-05 | 1985-12-19 | Sumitomo Metal Ind Ltd | Detection of abnormality in continuous casting |
| DE4210495C1 (en) * | 1992-03-31 | 1993-04-15 | Ibvt Ingenieurbuero Fuer Verfahrenstechnik Gmbh, 4000 Duesseldorf, De | |
| US5648110A (en) * | 1995-06-06 | 1997-07-15 | Penwest Foods Co. | French fry formulations and method of making |
| US6648059B2 (en) * | 2001-02-22 | 2003-11-18 | Aktiebolaget Skf | Method for detecting a roller failure |
| CN1329146C (en) * | 2005-01-31 | 2007-08-01 | 宝山钢铁股份有限公司 | Thin band continuous-casting sticking-roll on-line forecasting method |
| AT512214B1 (en) | 2011-12-05 | 2015-04-15 | Siemens Vai Metals Tech Gmbh | PROCESS ENGINEERING MEASURES IN A CONTINUOUS CASTING MACHINE AT THE CASTING STAGE, AT THE CASTING END AND AT THE PRODUCTION OF A TRANSITION PIECE |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3776298A (en) * | 1971-07-02 | 1973-12-04 | Mannesmann Ag | Apparatus for controlling the pressure force in multi-roll drives for equipment withdrawing an ingot from a continuous casting machine along a curved path |
| US3861456A (en) * | 1971-08-24 | 1975-01-21 | United States Steel Corp | Mechanism for controlling forces on a strand as it solidifies |
| DE2340636A1 (en) * | 1973-08-10 | 1975-02-27 | Siemens Ag | Continuous casting with stepwise bar extn. from horizontal mould - using program-controlled direct current motor on driving rolls |
| DE2504986B2 (en) * | 1975-02-04 | 1977-05-18 | Mannesmann AG, 4000 Düsseldorf | METHOD AND DEVICE FOR CONTROLLING AND AVOIDING CRITICAL DEFORMATION OF THE STRAND SHELL |
| US4148349A (en) * | 1976-05-08 | 1979-04-10 | Yutaka Sumita | Method for controlling slippage between rolls and a slab in a continuous compression casting apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3025579A (en) * | 1958-06-17 | 1962-03-20 | British Iron Steel Research | Continuous casting of metals |
| US3040397A (en) * | 1958-12-17 | 1962-06-26 | Koppers Co Inc | Continuous casting machine |
| US3047915A (en) * | 1959-06-11 | 1962-08-07 | Head Wrightson & Co Ltd | Apparatus for continuous casting of steel |
| US3321008A (en) * | 1963-10-18 | 1967-05-23 | M E A Inc | Apparatus for the continuous casting of metal |
-
1978
- 1978-08-11 CH CH855878A patent/CH630821A5/en not_active IP Right Cessation
-
1979
- 1979-08-07 ZA ZA00794099A patent/ZA794099B/en unknown
- 1979-08-08 AT AT79102851T patent/ATE7T1/en not_active IP Right Cessation
- 1979-08-08 DE DE7979102851T patent/DE2960098D1/en not_active Expired
- 1979-08-08 EP EP79102851A patent/EP0008692B2/en not_active Expired
- 1979-08-09 BR BR7905115A patent/BR7905115A/en unknown
- 1979-08-10 CA CA333,528A patent/CA1130982A/en not_active Expired
- 1979-08-10 JP JP10214879A patent/JPS5524800A/en active Pending
- 1979-08-10 ES ES483927A patent/ES483927A1/en not_active Expired
-
1981
- 1981-05-11 US US06/262,036 patent/US4317482A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3776298A (en) * | 1971-07-02 | 1973-12-04 | Mannesmann Ag | Apparatus for controlling the pressure force in multi-roll drives for equipment withdrawing an ingot from a continuous casting machine along a curved path |
| US3861456A (en) * | 1971-08-24 | 1975-01-21 | United States Steel Corp | Mechanism for controlling forces on a strand as it solidifies |
| DE2340636A1 (en) * | 1973-08-10 | 1975-02-27 | Siemens Ag | Continuous casting with stepwise bar extn. from horizontal mould - using program-controlled direct current motor on driving rolls |
| DE2504986B2 (en) * | 1975-02-04 | 1977-05-18 | Mannesmann AG, 4000 Düsseldorf | METHOD AND DEVICE FOR CONTROLLING AND AVOIDING CRITICAL DEFORMATION OF THE STRAND SHELL |
| US4148349A (en) * | 1976-05-08 | 1979-04-10 | Yutaka Sumita | Method for controlling slippage between rolls and a slab in a continuous compression casting apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049238A2 (en) * | 1980-10-01 | 1982-04-07 | Böhler Aktiengesellschaft | Method of controlling the discharge of billets |
| EP0049238A3 (en) * | 1980-10-01 | 1982-05-05 | Boehler Ag | Method of controlling the discharge of billets |
| EP0111000A1 (en) * | 1982-05-31 | 1984-06-20 | Nippon Kokan Kabushiki Kaisha | Method of monitoring for damage to solidified shell of metal casting produce during removal of casting from horizontal continuous casting machine |
| EP0111000A4 (en) * | 1982-05-31 | 1984-09-19 | Nippon Kokan Kk | Method of monitoring for damage to solidified shell of metal casting produce during removal of casting from horizontal continuous casting machine. |
| CN110252982A (en) * | 2019-06-28 | 2019-09-20 | 上海二十冶建设有限公司 | Billet caster fan-shaped section installation adjusting method |
| CN110252982B (en) * | 2019-06-28 | 2021-05-04 | 上海二十冶建设有限公司 | Method for installing and adjusting fan-shaped section of billet continuous casting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2960098D1 (en) | 1981-03-19 |
| CH630821A5 (en) | 1982-07-15 |
| US4317482A (en) | 1982-03-02 |
| ZA794099B (en) | 1980-08-27 |
| BR7905115A (en) | 1980-04-29 |
| ES483927A1 (en) | 1980-05-16 |
| EP0008692B1 (en) | 1981-01-28 |
| ATE7T1 (en) | 1981-02-15 |
| JPS5524800A (en) | 1980-02-22 |
| CA1130982A (en) | 1982-09-07 |
| EP0008692B2 (en) | 1986-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0008692B1 (en) | Method to avoid damage to cast guide elements in a continuous steel casting assembly | |
| AT401744B (en) | METHOD AND SYSTEM FOR CONTINUOUS CASTING | |
| EP3024601B1 (en) | Method and device for producing a metallic strip in a continuous casting and rolling process | |
| DE60034273T2 (en) | Method and device for casting a metal strand | |
| EP2788133B1 (en) | Process engineering measures in a strand casting machine at the beginning of casting, at the end of casting, and during the manufacturing of a transition piece | |
| DE2414514A1 (en) | CONTINUOUS CASTING | |
| EP0044291B1 (en) | Means for measuring the frictional force between the mould and the strand at continuous casting | |
| EP1313579A1 (en) | Continuous casting installation comprising a soft reduction section | |
| DE19639302C2 (en) | Method and device for producing thin slabs on a continuous caster | |
| EP2436459A1 (en) | Device and method for positioning at least one of two casting rollers in a continuous casting method for producing a strip of metal | |
| DE3822939C1 (en) | Continuous casting method for the production of slabs with a reduced thickness relative to the cast condition | |
| DE2439359C3 (en) | Strand guide frame in a continuous caster | |
| DE4413913C2 (en) | Method of preventing folding jam when rolling metal strip | |
| DE2923900C2 (en) | Method for preventing the strand from breaking through in continuous casting plants | |
| DE2409820A1 (en) | Mould for the continuous casting of steel - using formula for obtaining tapered mould walls to prevent fissures in cast billet | |
| CH618364A5 (en) | ||
| EP0116030B1 (en) | Process for controlling a bow-type continuous casting machine | |
| EP0741619B1 (en) | Process for guiding rectangular strands in a guide system | |
| DE60221653T2 (en) | CUTTING PROCESSES FOR BELTS IN CASTING | |
| DE3011137B1 (en) | Process for controlling the individual drives of a continuous sheet metal multi-roll machine for metal, esp. for steel, and drive arrangement for it | |
| DE102011079452A1 (en) | Device for limiting excessive inclination of roller carrier of continuous casting machine, has bending rod that limits inclination of roller carrier, which is connected with roller carrier and hydraulic cylinder | |
| AT406745B (en) | METHOD AND DEVICE FOR CHANGING THE THICKNESS OF A STRAND | |
| DE102004046249B4 (en) | Process to operate a twin roller metal strip casting assembly subject to varying crust-derived pressure variations | |
| DE1292793C2 (en) | Device for pulling a steel strand from a strand mold | |
| EP1249288B1 (en) | Process for controlling the driving forces in continuous casting machines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE DE FR GB IT LU NL SE |
|
| 17P | Request for examination filed | ||
| ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Designated state(s): AT BE DE FR GB IT LU NL SE |
|
| REF | Corresponds to: |
Ref document number: 7 Country of ref document: AT Date of ref document: 19810215 Kind code of ref document: T |
|
| REF | Corresponds to: |
Ref document number: 2960098 Country of ref document: DE Date of ref document: 19810319 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19810831 |
|
| PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
| 26 | Opposition filed |
Opponent name: ASEA AKTIEBOLAG Effective date: 19811022 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19820831 Year of fee payment: 4 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19820930 Year of fee payment: 4 |
|
| RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: CONCAST HOLDING AG |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19830809 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19840301 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
| ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
| PUAH | Patent maintained in amended form |
Free format text: ORIGINAL CODE: 0009272 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT MAINTAINED AS AMENDED |
|
| 27A | Patent maintained in amended form |
Effective date: 19860402 |
|
| AK | Designated contracting states |
Kind code of ref document: B2 Designated state(s): AT BE DE FR GB IT LU NL SE |
|
| ET3 | Fr: translation filed ** decision concerning opposition | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19890710 Year of fee payment: 11 Ref country code: AT Payment date: 19890710 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 19890724 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19890727 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19890731 Year of fee payment: 11 Ref country code: DE Payment date: 19890731 Year of fee payment: 11 |
|
| ITTA | It: last paid annual fee | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19900808 Ref country code: AT Effective date: 19900808 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19900831 |
|
| BERE | Be: lapsed |
Owner name: CONCAST HOLDING A.G. Effective date: 19900831 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19910430 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19910501 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| EUG | Se: european patent has lapsed |
Ref document number: 79102851.7 Effective date: 19850610 |