EP0044826A1 - Procédé pour la réparation à chaud d'un panier de coulée d'une installation de coulée continue - Google Patents

Procédé pour la réparation à chaud d'un panier de coulée d'une installation de coulée continue Download PDF

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Publication number
EP0044826A1
EP0044826A1 EP81890116A EP81890116A EP0044826A1 EP 0044826 A1 EP0044826 A1 EP 0044826A1 EP 81890116 A EP81890116 A EP 81890116A EP 81890116 A EP81890116 A EP 81890116A EP 0044826 A1 EP0044826 A1 EP 0044826A1
Authority
EP
European Patent Office
Prior art keywords
intermediate vessel
residual steel
steel
amount
slag layer
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
Application number
EP81890116A
Other languages
German (de)
English (en)
Other versions
EP0044826B1 (fr
Inventor
Otto Dipl.-Ing. Hoyer
Norbert Antensteiner
Walter Fortner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine AG
Original Assignee
Voestalpine AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3553974&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0044826(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0044826A1 publication Critical patent/EP0044826A1/fr
Application granted granted Critical
Publication of EP0044826B1 publication Critical patent/EP0044826B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/20—Stopper-rod operating equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49746—Repairing by applying fluent material, e.g., coating, casting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y10T29/49984—Coating and casting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49989—Followed by cutting or removing material

Definitions

  • the invention relates to a method for hot repair of the protective layer on the permanent lining of an intermediate vessel of a continuous caster.
  • the permanent lining For intermediate containers, it has proven to be advantageous to provide the permanent lining with a wear layer which acts as a protective layer for the permanent lining, a so-called wear lining.
  • This wear lining is renewed from time to time so that the permanent lining underneath it is not damaged.
  • the wear lining has been renewed when the intermediate vessel is cold, etc. by manual shoveling of the tundish after the liquid metal and slag residues still present in the tundish immediately after pouring has been tipped over and the lining of the wear lining is then bricked up. It is necessary to cool the tundish for a long time, but care must be taken not to let the temperature of the tundish drop below a certain level in order to keep heat losses low. Because of the residual heat in the intermediate vessel, shoveling is therefore an extremely exhausting and long-term activity.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a method for the hot repair of the protective layer on the permanent lining of an intermediate vessel of a continuous caster, which can be carried out simply and quickly, through which heat losses of the intermediate vessel are largely avoided and which further ensures that, despite the high heat content of the intermediate vessel to be repaired, the repair team can carry out the required work without impairment.
  • This object is achieved in that a residual amount of steel covering the bottom together with the slag layer is left in the intermediate vessel, that this residual steel amount is cooled with the slag layer until it solidifies, and then the remaining steel amount solidified with a slag layer in the still hot state is removed from the intermediate vessel, whereupon a hot repair compound forming the protective layer is sprayed onto the permanent lining of the still hot intermediate vessel.
  • the residual steel quantity and slag layer solidified to form a plate are advantageously removed from the intermediate vessel while still glowing, the residual steel quantity being cooled in such a way that the temperature of the continuous feed of the intermediate vessel lies between 500 and 1300.degree.
  • the pouring tube is expediently sealed and the stopper removed before the amount of residual steel left in the intermediate vessel solidifies.
  • At least one holding means that welds with it and protrudes from it preferably a sheet steel strip with an eyelet, is immersed in the residual steel amount before the residual steel amount solidifies.
  • the intermediate vessel 2 which is surrounded on the outside by a sheet steel jacket 1, is lined on the inside with a permanent lining 3.
  • a wear lining 4 which has a thickness of 20 to 30 mm when new, is applied to the permanent lining as a protective layer for the permanent lining.
  • this wear lining is sprayed-on sintered magnesite with the following chemical composition:
  • a stopper 5 for closing the outflow opening 6 and for regulating the amount of steel flowing out can be raised and lowered by means of a hand lever 7 which moves the holding arm 8 of the stopper 5.
  • a pouring tube 9 is inserted, which is designed as a dip tube immersed in a mold with side outlets 10.
  • the wear lining 4 has only a small thickness (as shown in the drawing), so it must be renewed, one is in the intermediate vessel 2
  • the stopper 5 is closed when this amount of residual steel 11 is in the tundish, whereupon the tundish 2 is lifted away from the casting platform and brought into the hallway. There the pouring tube 9 is knocked off and the drain opening 6 is closed (clogged) from below. Then the plug 5 is lifted and pivoted to the side or removed by tilting the plug holder; this makes the stopper reusable.
  • the amount of residual steel 11 located in the intermediate vessel is cooled etc. until the temperature of the permanent feed 3 is between 500 and 1300 ° C. Before the remaining steel quantity 11 solidifies, however, a tab-shaped steel sheet strip 14 is immersed in it, which welds to the remaining steel quantity 11.
  • This steel sheet strip 14 serves to be able to remove the residual steel quantity 11 solidified into a plate more easily from the intermediate vessel by loosening the solidified residual steel quantity, for example by means of a crane hook suspended in an eyelet 15 of the steel strip.
  • the old wear chuck 4 which adheres to the amount of residual steel 11 solidified into a plate, is also removed in the process and the vessel is ready for the application of a new wear layer.
  • the new wear lining is applied by spraying on a hot repair compound, for example by applying spraying sintered magnesite with the chemical composition specified above.
  • the new wear lining is dried by the permanent lining 3 of the intermediate vessel, which has a temperature between 500 and 1300 ° C. To ensure that the new wear lining is completely dry, it can be dried briefly before reusing the intermediate vessel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
EP81890116A 1980-07-16 1981-07-08 Procédé pour la réparation à chaud d'un panier de coulée d'une installation de coulée continue Expired EP0044826B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0368580A AT375850B (de) 1980-07-16 1980-07-16 Verfahren zur heissreparatur der schutzschicht auf dem dauerfutter eines zwischengefaesses einer stranggiessanlage
AT3685/80 1980-07-16

Publications (2)

Publication Number Publication Date
EP0044826A1 true EP0044826A1 (fr) 1982-01-27
EP0044826B1 EP0044826B1 (fr) 1984-02-22

Family

ID=3553974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81890116A Expired EP0044826B1 (fr) 1980-07-16 1981-07-08 Procédé pour la réparation à chaud d'un panier de coulée d'une installation de coulée continue

Country Status (6)

Country Link
US (1) US4506425A (fr)
EP (1) EP0044826B1 (fr)
JP (1) JPS5750257A (fr)
AT (1) AT375850B (fr)
CA (1) CA1168522A (fr)
DE (1) DE3162369D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0653397U (ja) * 1992-12-28 1994-07-19 浩文 森 ダブル操舵システム
GB9815535D0 (en) * 1998-07-17 1998-09-16 Kvaerner Metals Cont Casting Improvements in and relating to handling molten materials
CN115156514A (zh) * 2022-06-17 2022-10-11 建龙北满特殊钢有限责任公司 一种连铸中间包砌筑方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2169807A1 (fr) * 1971-12-07 1973-09-14 Foseco Int
FR2247433A1 (en) * 1973-10-11 1975-05-09 Murton Crawford Coating or lining of refractory matl. for metallurgical vessels - comprising damp refractory, binder mixture hardened on by water evaporation
BE829383A (fr) * 1975-05-22 1975-09-15 Procede pour proteger les parois refractaires de recipients metallurgiques

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1868699A (en) * 1928-10-15 1932-07-26 Corning Glass Works Method of making composite refractory articles
AT254027B (de) * 1964-02-14 1967-05-10 Hans-Reiner Dipl Ing Moskopf Feuerfeste Spritzmasse zur trockenen Heißreparatur von Stahlschmelz- und Wärmebehandlungsöfen aller Art, Industrieofenanlagen und Feuerräumen
AT269727B (de) * 1966-07-26 1969-03-25 Veitscher Magnesitwerke Ag Flickmasse zum Heißreparieren des feuerfesten Herdes und des Mauerwerks von Industrieöfen
NL139194B (nl) * 1969-10-28 1973-06-15 Koninklijke Hoogovens En Staal Werkwijze en inrichting voor het plaatselijk repareren van de vuurvaste binnenwand van een metallurgisch vat.
GB1469513A (en) * 1973-07-30 1977-04-06 Foseco Trading Ag Tundishes
AT340620B (de) * 1975-02-25 1977-12-27 Voest Ag Einrichtung zur behandlung von metallschmelzen wahrend des stranggiessens mit spulgas
JPS5639157A (en) * 1979-09-07 1981-04-14 Foseco Japan Ltd:Kk Continuous casting method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2169807A1 (fr) * 1971-12-07 1973-09-14 Foseco Int
FR2247433A1 (en) * 1973-10-11 1975-05-09 Murton Crawford Coating or lining of refractory matl. for metallurgical vessels - comprising damp refractory, binder mixture hardened on by water evaporation
BE829383A (fr) * 1975-05-22 1975-09-15 Procede pour proteger les parois refractaires de recipients metallurgiques

Also Published As

Publication number Publication date
ATA368580A (de) 1984-02-15
US4506425A (en) 1985-03-26
EP0044826B1 (fr) 1984-02-22
JPS5750257A (en) 1982-03-24
AT375850B (de) 1984-09-10
DE3162369D1 (en) 1984-03-29
CA1168522A (fr) 1984-06-05

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