LU82456A1 - PROCESS FOR MONITORING THE CONTINUOUS CASTING OF METALS - Google Patents
PROCESS FOR MONITORING THE CONTINUOUS CASTING OF METALS Download PDFInfo
- Publication number
- LU82456A1 LU82456A1 LU82456A LU82456A LU82456A1 LU 82456 A1 LU82456 A1 LU 82456A1 LU 82456 A LU82456 A LU 82456A LU 82456 A LU82456 A LU 82456A LU 82456 A1 LU82456 A1 LU 82456A1
- Authority
- LU
- Luxembourg
- Prior art keywords
- thermal profile
- casting
- ingot
- continuous casting
- metals
- Prior art date
Links
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
-
- 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
-
- 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
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
- - BL-2872/vd * j Revendication de la priorité d'une demande de brevet déposée en Belgique le 17 mai 1980 sous le no. 876.340 ir- C 1947/7 905.- - BL-2872 / vd * j Claim of the priority of a patent application filed in Belgium on May 17, 1980 under no. 876.340 ir- C 1947/7 905.
BREVET D ' INVENTIONPATENT
83SSSS3aBSSSS88BaCSSS»llftl8tl«XI·· CENTRE DE RECHERCHES METALLURGIQUES -CENTRUM VOOR RESEARCH IN DE METALLURGIE,83SSSS3aBSSSS88BaCSSS "llftl8tl" XI ·· CENTER FOR RESEARCH METALLURGICS -CENTRUM VOOR RESEARCH IN DE METALLURGIE,
Association sans but lucratif -Nonprofit organization -
Vereniging zonder winstoogmerk à BRUXELLES, (Belgique) .Vereniging zonder winstoogmerk in BRUXELLES, (Belgium).
ii
Procédé pour le contrôle de la coulée continue des métaux.Method for controlling the continuous casting of metals.
La présente invention se rapporte à un procédé pour le contrôle de la coulée continue des métaux, et en particulier de l'acier.The present invention relates to a process for controlling the continuous casting of metals, and in particular steel.
Le principe du contrôle de la coulée continue des métaux, et en particulier de l'acier consiste, après s'être imposé une vitesse de coulée à respecter, à régler les débits d'eau à mettre en oeuvre dans chacune des zones de refroidissement secondaire du lingot, de façon à suivre un profil thermique déterminé pour le refroidissement du dit lingot, lorsque celui-ci est * animé de la vitesse de coulée choisie.The principle of the control of the continuous casting of metals, and in particular of steel consists, after having imposed a casting speed to be respected, to regulate the water flow rates to be implemented in each of the secondary cooling zones of the ingot, so as to follow a determined thermal profile for the cooling of said ingot, when the latter is * driven by the chosen casting speed.
k I 2‘~k I 2 ‘~
Un tel réglage du débit d'eau dans les dif-Such adjustment of the water flow in the different
Iférentes zones de refroidissement secondaire est sujet à de réelles difficultés de réalisation, spécialement lorsque des variations de vitesse d'extraction du lingot se produisent au cours de la coulée. Ces variations sont inévitables et inhérentes soit • à la nature même du procédé, soit à divers incidents habituels de fonctionnement.The various secondary cooling zones are subject to real difficulties in production, especially when variations in the ingot extraction speed occur during casting. These variations are inevitable and inherent either • in the very nature of the process, or in various usual operating incidents.
Parmi ces variations de vitesses, on peut citer par exemple celles dues aux phases de démarrage ou d'arrêt de la coulée, à la coulée de plusieurs poches en séquence ininterrompue, au changement de poche ou de panier, etc..., ainsi qu'à des incidents de fonctionnement, tels que par exemple des bouchages de busette. L'importance des variations de vitesses dues aux causes susmentionnées peut être assez grande.Among these variations in speed, there may be mentioned, for example, those due to the phases of starting or stopping the casting, the casting of several pockets in uninterrupted sequence, the change of pocket or basket, etc., as well as 'to operating incidents, such as for example nozzle blockages. The magnitude of the speed variations due to the above-mentioned causes can be quite large.
Afin de tenir compte de ces variations de vitesses, on est amené à modifier, de façon appropriée, les débits d' eau fournis aux différentes zones de refroidissement secondaire, de telle sorte que le profil thermique prédéterminé soit encore respecté.In order to take account of these speed variations, it is necessary to modify, in an appropriate manner, the water flow rates supplied to the various secondary cooling zones, so that the predetermined thermal profile is still respected.
Diverses méthodes ont déjà été élaborées dans ce but, mais, dans la plupart des cas, le point de redressement du lingot n'est pas arrosé par l'eau de refroidissement et conséquemment la température superficielle du lingot en cet endroit y varie avec la vitesse de coulée.Various methods have already been developed for this purpose, but, in most cases, the straightening point of the ingot is not watered by the cooling water and consequently the surface temperature of the ingot at this location varies with speed. of casting.
Or, et c'est là un inconvénient important, on a constaté que différents défauts externes et internes pouvaient seHowever, and this is an important drawback, it has been observed that various external and internal faults could be
TT
produire lorsque le brin subissait certaines déformations, telles » que par exemple cintrage ou redressement dans un domaine de températures inappropriées.produce when the strand undergoes certain deformations, such as for example bending or straightening in a range of inappropriate temperatures.
: La présente invention a pour objet un procédé . grâce auquel on peut remédier à ces inconvénients.: The present invention relates to a method. thanks to which these drawbacks can be remedied.
l· t ILe procédé, objet de la présente invention dans lequel, au cours d'une opération de coulée continue de métal, on effectue sur le brin coulé une opération de refroidissement secondaire, régulée de façon à maintenir un profil thermique pré-déterminé tout le long de la zone faisant l'objet du dit refroi-, dissement, est essentiellement caractérisé en ce que : - l'on calcule la température superficielle du lingot au point de redressement, sur base du profil thermique choisi et du temps de séjour du métal dans la lingotière, soit donc de la vitesse de c ou lé e, - la vitesse de coulée devant être modifiée pour toute cause quelconque, on détermine par un calcul anticipatif, quelle serait la nouvelle température superficielle probable du lingot au point de redressement, tous autres paramètres de coulée restant inchangés, - l'on compare cette dernière température avec les valeurs de consigne et on détermine par le calcul un nouveau profil thermique conduisant à la température désirée au point de redressement, - l'on ajuste les débits du refroidissement secondaire, pour réaliser le profil thermique ainsi modifié.The process, object of the present invention in which, during a continuous metal casting operation, a secondary cooling operation is carried out on the cast strand, regulated so as to maintain a predetermined thermal profile while along the zone which is the subject of said cooling, is essentially characterized in that: - the surface temperature of the ingot at the recovery point is calculated, on the basis of the chosen thermal profile and the residence time of the metal in the ingot mold, that is to say the speed of c or l e, - the casting speed having to be modified for any reason whatsoever, we determine by an anticipatory calculation, what would be the new probable surface temperature of the ingot at the recovery point, all other casting parameters remaining unchanged, - the latter temperature is compared with the set values and a new thermal profile is determined by calculation leading to the desired temperature at straightening point, - the secondary cooling flow rates are adjusted, to produce the thermal profile thus modified.
En pratique, on ajuste tout d’abord le refroidissement secondaire pour réaliser ce nouveau profil, et si ce fai-- sant on atteint les limites de réglage des débits d'eau, on pro pose de modifier la vitesse de coulée et on recommence une boucle de calcul pour déterminer les débits d’eau à utiliser pour les nouvelles conditions de coulée.In practice, the secondary cooling is first of all adjusted to achieve this new profile, and if this is done reaching the limits for adjusting the water flow rates, it is proposed to modify the pouring speed and a calculation loop to determine the water flow rates to be used for the new casting conditions.
,,
La température théorique souhaitée est en fait remplacée par une plage de températures acceptables entre deux /.......~.............The desired theoretical temperature is in fact replaced by an acceptable temperature range between two / ....... ~ .............
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE6/46835A BE876340A (en) | 1979-05-17 | 1979-05-17 | PROCEDURE FOR THE CONTROL OF THE CONTINUOUS METAL CASTING |
BE6046835 | 1979-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
LU82456A1 true LU82456A1 (en) | 1980-10-08 |
Family
ID=3874824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
LU82456A LU82456A1 (en) | 1979-05-17 | 1980-05-16 | PROCESS FOR MONITORING THE CONTINUOUS CASTING OF METALS |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS55156657A (en) |
BE (1) | BE876340A (en) |
DE (1) | DE3018820A1 (en) |
FR (1) | FR2456580A1 (en) |
GB (1) | GB2050888A (en) |
LU (1) | LU82456A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2554026B2 (en) * | 1980-03-13 | 1985-12-13 | Fives Cail Babcock | METHOD FOR CONTROLLING THE COOLING OF THE CAST PRODUCT IN A CONTINUOUS CASTING SYSTEM |
FR2643580B1 (en) * | 1989-02-27 | 1991-05-10 | Siderurgie Fse Inst Rech | METHOD FOR ADJUSTING THE SECONDARY COOLING OF A CONTINUOUS CASTING MACHINE FOR METAL PRODUCTS |
-
1979
- 1979-05-17 BE BE6/46835A patent/BE876340A/en unknown
-
1980
- 1980-05-14 FR FR8011183A patent/FR2456580A1/en not_active Withdrawn
- 1980-05-16 DE DE19803018820 patent/DE3018820A1/en not_active Withdrawn
- 1980-05-16 JP JP6585080A patent/JPS55156657A/en active Pending
- 1980-05-16 LU LU82456A patent/LU82456A1/en unknown
- 1980-05-19 GB GB8016443A patent/GB2050888A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JPS55156657A (en) | 1980-12-05 |
GB2050888A (en) | 1981-01-14 |
DE3018820A1 (en) | 1980-11-20 |
FR2456580A1 (en) | 1980-12-12 |
BE876340A (en) | 1979-09-17 |
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