BE860455A - PROCEDURE FOR ADJUSTING THE TEMPERATURE IN A CONTINUOUS CASTING BASKET CONTAINING A METAL BATH - Google Patents

PROCEDURE FOR ADJUSTING THE TEMPERATURE IN A CONTINUOUS CASTING BASKET CONTAINING A METAL BATH

Info

Publication number
BE860455A
BE860455A BE6046202A BE6046202A BE860455A BE 860455 A BE860455 A BE 860455A BE 6046202 A BE6046202 A BE 6046202A BE 6046202 A BE6046202 A BE 6046202A BE 860455 A BE860455 A BE 860455A
Authority
BE
Belgium
Prior art keywords
metal bath
temperature
continuous casting
adjusting
procedure
Prior art date
Application number
BE6046202A
Other languages
French (fr)
Original Assignee
Centre Rech Metallurgique
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
Application filed by Centre Rech Metallurgique filed Critical Centre Rech Metallurgique
Priority to BE6046202A priority Critical patent/BE860455A/en
Publication of BE860455A publication Critical patent/BE860455A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16Controlling or regulating processes or operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10Supplying or treating molten metal
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • General Induction Heating (AREA)

Description

       

  Procédé pour régler la température régnant dans un panier

  
de coulée continue contenant un bain métallique.

  
La présente invention est relative à un procédé pour régler la température régnant dans un panier de coulée continue contenant un bain métallique, tel que par exemple un bain d'acier.

  
On sait qu'en dehors des quelques premières minutes de coulée continue au cours desquelles la température du panier croît rapidement, il y a intérêt à maintenir, aussi constante que possible, la température du dit panier jusqu'à la

  
fin de l'opération. 

  
En effet, la qualité de l'acier coulé en lingot dépend très fortement des variations de température de ce panier. Il en résulte des augmentations de frais non négligeables dues

  
 <EMI ID=1.1> 

  
réparations prématurées des réfractaires.

  
Or, on constate que cette température a généralement tendance à être d'abord plus élevée que celle normalement nécessaire et qu'ensuite, elle devient inférieure à la dite valeur normale.

  
En conséquence, il est nécessaire de réagir de façon aussi efficace que possible pour maintenir la température du panier à la valeur voulue, et c'est précisément là un des objets de la présente invention.

  
Le procédé, objet de la présente invention, est essentiellement caractérisé en ce que l'on choisit une valeur de consigne à laquelle il faut maintenir la température du panier pendant toute l'opération de coulée, ce choix étant effectué en fonction de la qualité voulue pour l'acier et des caractéristiques de la machine de coulée continue, en ce que l'on mesure la température du panier en cours de coulée, en ce que l'on modifie l'état thermique du bain métallique contenu dans le pa-

  
 <EMI ID=2.1> 

  
opération, lorsque la température mesurée est supérieure à la consigne, et en le réchauffant ensuite lorsque la température mesurée devient inférieure à la consigne.

  
Suivant une modalité de l'invention, On refroidit le bain métallique en introduisant des mitrailles. de petit calibre ou en variante; en plongeant pendant le temps nécessaire une brame froide que l'on retire ensuite.

  
Suivant une autre modalité de l'invention, on réchauffe le bain métallique par l'intermédiaire d'une source électrique extérieure qui peut être : - le système chauffant par effet Joule d'un panier comprenant dans sa paroi une zone constituée d'un matériau réfractaire électriquement conducteur, tel que par exemple du graphite en grains,
- le système chauffant par induction d'un panier muni d'un inducteur à canal éventuellement désolidarisable en prévision d'une différence de vitesse d'usure de revêtement.  <EMI ID=3.1> 

  
d ans un panier de coulée continus contenant un bain métallique, caractérisé en ce que l'on choir " une valeur de consigne à laquelle il faut maintenir la température du panier pendant toute l'opération de coulée, ce choix étant effectué en fonction de la

  
 <EMI ID=4.1> 

  
pérature mesurée est supérieure iL la consigne et en le réchauffant ensuite, lorsque la température mesurée devient inférieure

  
à la consigne.



  Process for regulating the temperature in a basket

  
continuous casting containing a metal bath.

  
The present invention relates to a process for adjusting the temperature prevailing in a continuous casting basket containing a metal bath, such as for example a steel bath.

  
It is known that apart from the first few minutes of continuous casting during which the temperature of the basket increases rapidly, it is advantageous to maintain, as constant as possible, the temperature of said basket until the

  
end of the operation.

  
Indeed, the quality of the steel cast in ingot depends very strongly on the temperature variations of this basket. This results in significant cost increases due

  
 <EMI ID = 1.1>

  
premature refractory repairs.

  
However, it is observed that this temperature generally tends to be initially higher than that normally necessary and that then, it becomes lower than the said normal value.

  
Accordingly, it is necessary to react as efficiently as possible to maintain the temperature of the basket at the desired value, and this is precisely one of the objects of the present invention.

  
The method, object of the present invention, is essentially characterized in that one chooses a setpoint at which it is necessary to maintain the temperature of the basket throughout the casting operation, this choice being made according to the desired quality. for steel and the characteristics of the continuous casting machine, in that the temperature of the basket during casting is measured, in that the thermal state of the metal bath contained in the pa-

  
 <EMI ID = 2.1>

  
operation, when the measured temperature is higher than the setpoint, and then reheating it when the measured temperature falls below the setpoint.

  
According to one embodiment of the invention, the metal bath is cooled by introducing scrap metal. small caliber or alternatively; by plunging for the necessary time a cold slab which is then removed.

  
According to another method of the invention, the metal bath is heated by means of an external electrical source which can be: the Joule heating system of a basket comprising in its wall a zone made of a material electrically conductive refractory, such as for example granite graphite,
- The induction heating system of a basket fitted with an inductor with a channel which may be detached in anticipation of a difference in the rate of wear of the coating. <EMI ID = 3.1>

  
d years a continuous pouring basket containing a metal bath, characterized in that one drops "a set value at which it is necessary to maintain the temperature of the basket during the entire casting operation, this choice being made according to the

  
 <EMI ID = 4.1>

  
measured temperature is higher than the setpoint and then reheating it, when the measured temperature falls below

  
with consent.


    

Claims (1)

2. Procédé suivant la revendication 1, caractérisé en ce que l'on refroidit le bain métallique en introduisant <EMI ID=5.1> 2. Method according to claim 1, characterized in that the metal bath is cooled by introducing <EMI ID = 5.1> risé en ce que l'on refroidit la bain métallique en y plongeait pendant le temps nécessaire une brame froide que l'on retire ensuite. ized in that the metal bath is cooled by immersing a cold slab in it for the necessary time, which is then removed. 4. Procédé suivant la revendication 1, caractérisé en ce que l'on réchauffe le=- bain métallique par l'intermédiaire d'une source électrique extérieure. 4. Method according to claim 1, characterized in that the = - metal bath is heated by means of an external electrical source. 5. Procédé suivant la revendication 4, caractérisé en ce que la source électrique extérieure est constituée 5. Method according to claim 4, characterized in that the external electrical source is constituted <EMI ID=6.1> <EMI ID = 6.1> électriquement conducteur, tel crue par exemple du graphite en grains. 6. Procédé suivant la revendication 3, caractérisé en ce que la source électrique extérieure est constituée par le système chauffant par induction d'un panier muni d'un inducteur à canal, éventuellement désolidarisable en prévision d'une différence de vitesse d'usure du revêtement. electrically conductive, such as for example graphite in grains. 6. Method according to claim 3, characterized in that the external electrical source is constituted by the heating system by induction of a basket provided with a channel inductor, optionally detachable in anticipation of a difference in wear speed of the coating.
BE6046202A 1977-11-03 1977-11-03 PROCEDURE FOR ADJUSTING THE TEMPERATURE IN A CONTINUOUS CASTING BASKET CONTAINING A METAL BATH BE860455A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE6046202A BE860455A (en) 1977-11-03 1977-11-03 PROCEDURE FOR ADJUSTING THE TEMPERATURE IN A CONTINUOUS CASTING BASKET CONTAINING A METAL BATH

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE6046202A BE860455A (en) 1977-11-03 1977-11-03 PROCEDURE FOR ADJUSTING THE TEMPERATURE IN A CONTINUOUS CASTING BASKET CONTAINING A METAL BATH
BE860455 1977-11-03

Publications (1)

Publication Number Publication Date
BE860455A true BE860455A (en) 1978-03-01

Family

ID=25658378

Family Applications (1)

Application Number Title Priority Date Filing Date
BE6046202A BE860455A (en) 1977-11-03 1977-11-03 PROCEDURE FOR ADJUSTING THE TEMPERATURE IN A CONTINUOUS CASTING BASKET CONTAINING A METAL BATH

Country Status (1)

Country Link
BE (1) BE860455A (en)

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