EP1337366A2 - Procede et dispositif pour controler la temperature de l'acier a la surface du bain d'une installation de coulee continue jusqu'a la percee de four - Google Patents

Procede et dispositif pour controler la temperature de l'acier a la surface du bain d'une installation de coulee continue jusqu'a la percee de four

Info

Publication number
EP1337366A2
EP1337366A2 EP01992623A EP01992623A EP1337366A2 EP 1337366 A2 EP1337366 A2 EP 1337366A2 EP 01992623 A EP01992623 A EP 01992623A EP 01992623 A EP01992623 A EP 01992623A EP 1337366 A2 EP1337366 A2 EP 1337366A2
Authority
EP
European Patent Office
Prior art keywords
pan
temperature
steel
distributor
casting
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.)
Withdrawn
Application number
EP01992623A
Other languages
German (de)
English (en)
Inventor
Fritz-Peter Pleschiutschnigg
Lothar Parschat
Eckart Schwencke
Erwin Wosch
Bernt Rollinger
Stephan Feldhaus
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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
Priority claimed from DE10152201A external-priority patent/DE10152201A1/de
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1337366A2 publication Critical patent/EP1337366A2/fr
Withdrawn legal-status Critical Current

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
    • B22D11/18—Controlling or regulating processes or operations for pouring

Definitions

  • the invention relates to a method and a device for controlling the steel temperature from the casting level of a continuous casting mold over the area of the entire secondary metallurgy with a process stage determining the final temperature, such as a ladle furnace, up to the tapping of a steelmaking process.
  • the steel temperature in the mold level is of essential importance with regard to the steel quality (surface and interior quality) and the casting reliability.
  • the invention has for its object to provide a method and an apparatus which make it possible, independently of these numerous influencing variables, to plan and control the temperature travel of a melt between the steel temperature in the mold level and the furnace tapping and "online".
  • Figure 1 shows the process and production chain between furnace tapping and casting level in the continuous casting mold
  • Figure 2 shows the temperature travel or the temperature underflow of the steel over the process time for the process chain, starting from the mold level in the mold over the ladle furnace to the furnace racking;
  • Figure 3 in two partial images 3a and 3b, for example, a melt planning.
  • the distributor (3) and the pan (4.3) can be regarded as a heat exchanger, the specific heat data of which is determined by the type, age and state of wear of the lining.
  • the desired steel temperature TML Tu + X ° C (2.1) is assumed and the desired steel temperature in the distributor (3.1) is determined for a planned casting speed and a planned casting format.
  • the distributor temperature (3.1) is set accordingly by knowing the temperature loss (4.1 .1) between the ladle furnace and the distributor.
  • a melt planning is shown in Figure 3, starting from the temperature of the steel in the mold level (2.1), expressed as the equivalent liquid temperature in the distributor T 0 M (3.1.) With auxiliary temperatures + 5, 10, 15, 20 ° C (3.1.1 ), depending on the casting speed (6) - Part 3a - up to the delivery temperature z.
  • the delivery temperature of the steel at the ladle furnace is determined by the ladle history (7) with its two main areas of influence
  • FIG. 4 shows a suitable pan detection system (8) on the basis of coded intrinsic radiation of the pan wall on a radiation sensor (receiver) (8.1 .2) by means of a perforated plate (8.1.1).
  • pan history (7) is therefore composed
  • the pan goes through various treatments such as cleaning (7.2.1), preparing the slide for the next use (7.2.2).
  • the pan can also be removed from the pan cycle in order to be heated at a heating stand (7.5) when there are long periods of idleness, or to be reloaded at a pan wall stand (7.6).
  • the pan cycle (7.4) is used to determine the pan history (7) relevant locations, the pan detection system (8), preferably by means of a coded pan radiation (8.1), which is based on the radiation of the pan installed.
  • the movement and the differentiated time sequences in the areas “pan full” (7.1) "pan empty” (7.2) can be recorded and then "online” the temperature losses (4.1.1) between the LF and the distributor on the basis to place this data acquisition in a functional context.
  • FIG. 2 shows the temperature travel of a melt from the electric furnace (5.2) or BOF (5.1) via the ladle furnace, LF-ex (4.1) to the casting level (2) in the mold (1).
  • the planned steel temperature in the mold level (2.1) gives the basis for temperature planning in the manifold and on the ladle furnace LF-ex (4.1).
  • the jump in temperature from the casting level in the distributor (9) or the temperature loss of the steel from the distribution level in the casting level is essentially determined by the casting speed (6) and casting performance, i. H. the solidification thickness and casting width.
  • the jump in temperature from the distributor to the ladle furnace (4.1.1), on the other hand, is essentially determined by the history of the ladle (7) and the history of the distributor (3.2).
  • Figure 3 is divided into sub-images a and b.
  • the picture shows how the temperature losses depend on the dwell time of the steel in the pan (7.1) and the distribution preheating temperature (3.2.1) both for the first pan of a sequence and for subsequent pans. These temperature losses also depend on the remaining pan history (7) and can be determined “online” using the described method.
  • FIG. 4 shows the pan detection system (8) on the basis of coded intrinsic radiation (8.1) with the aid of a perforated plate (8.1.1), which is generated by one or more radiation sensors (8.1) which are located at strategic points in the pan cycle (7.4 ) are placed, is detected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Control Of Temperature (AREA)
  • Control Of Heat Treatment Processes (AREA)

Abstract

L'invention concerne un procédé pour contrôler la température de l'acier à la surface du bain d'une coquille de coulée continue (1) dans le domaine de la métallurgie secondaire (4) dans son ensemble, avec une étape de processus déterminante pour la température finale (4.1) tel qu'un four-poche, jusqu'à la percée de four (5) au cours d'un processus de production d'acier. Ce procédé est caractérisé en ce que la température de l'acier à la surface du bain est contrôlée sur la base de TML = Tli + X °C (X = 5 - 15°C) et respectée en tenant compte de la détermination d'une saute de température (9) entre la surface du bain dans la coquille (1) et un distributeur (3) en relation avec la vitesse de coulée (6) pour un format de barre prédéterminé, de l'historique de la poche (7) en termes de périodes, comme p. ex. 'poche pleine', 'poche vide', et de l'état de la poche, comme p. ex. son revêtement, son vieillissement, ainsi que d'une saute de température de l'acier entre le distributeur (3) et la dernière température de four-poche (LF-ex).
EP01992623A 2000-11-04 2001-10-31 Procede et dispositif pour controler la temperature de l'acier a la surface du bain d'une installation de coulee continue jusqu'a la percee de four Withdrawn EP1337366A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10054760 2000-11-04
DE10054760 2000-11-04
DE10152201 2001-10-23
DE10152201A DE10152201A1 (de) 2000-11-04 2001-10-23 Verfahren und Vorrichtung zur Kontrolle der Stahltemperatur vom Gießspiegel einer Stranggießanlage bis zum Ofenabstich
PCT/EP2001/012594 WO2002036292A2 (fr) 2000-11-04 2001-10-31 Procede et dispositif pour controler la temperature de l'acier a la surface du bain d'une installation de coulee continue jusqu'a la percee de four

Publications (1)

Publication Number Publication Date
EP1337366A2 true EP1337366A2 (fr) 2003-08-27

Family

ID=26007569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01992623A Withdrawn EP1337366A2 (fr) 2000-11-04 2001-10-31 Procede et dispositif pour controler la temperature de l'acier a la surface du bain d'une installation de coulee continue jusqu'a la percee de four

Country Status (13)

Country Link
US (1) US20040031583A1 (fr)
EP (1) EP1337366A2 (fr)
JP (1) JP2004512958A (fr)
CN (1) CN1473081A (fr)
AU (1) AU2002224817A1 (fr)
BR (1) BR0115073A (fr)
CA (1) CA2424368A1 (fr)
CZ (1) CZ20031218A3 (fr)
HU (1) HUP0303371A2 (fr)
MX (1) MXPA03003950A (fr)
PL (1) PL361622A1 (fr)
RU (1) RU2003116517A (fr)
WO (1) WO2002036292A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5959319B2 (ja) * 2012-05-31 2016-08-02 アズビル株式会社 記号識別方法および記号識別装置
CN104525926B (zh) * 2014-11-26 2016-08-24 攀枝花钢城集团瑞钢工业有限公司 钢包下线判定的方法
DE102014224334A1 (de) 2014-11-28 2016-06-02 Sms Group Gmbh Simulierung von Temperaturverteilungen innerhalb von Pfannen eines Hüttenwerks und innerhalb von in den Pfannen enthaltener Metallschmelze
JP6252532B2 (ja) * 2015-03-23 2017-12-27 Ｊｆｅスチール株式会社 転炉吹錬終了時目標溶鋼温度設定装置及びその方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797310A (en) * 1972-02-28 1974-03-19 Steel Corp Temperature sensing device
US4133036A (en) * 1976-02-26 1979-01-02 Republic Steel Corporation Method and system for monitoring a physical condition of a medium
US4279151A (en) * 1979-08-07 1981-07-21 Bethlehem Steel Corporation Temperature measuring system
AT364980B (de) * 1980-01-11 1981-11-25 Voest Alpine Ag Verfahren zum kontinuierlichen messen der strangoberflaechentemperatur eines gussstranges sowie einrichtung zur durchfuehrung des verfahrens
FR2651876B1 (fr) * 1989-09-13 1991-12-13 Siderurgie Fse Inst Rech Procede pour determiner en continu l'epaisseur du laitier liquide a la surface d'un bain de metal en fusion dans un recipient metallurgique.
JP2950188B2 (ja) * 1995-02-21 1999-09-20 住友金属工業株式会社 連続鋳造における表面欠陥の抑制方法
ATE282199T1 (de) * 1995-06-30 2004-11-15 Novacast Ab Verfahren zur kontaktlosen kontinuierlichen temperaturmessung der aushärtung von metalllegierungen
TW337553B (en) * 1995-12-20 1998-08-01 Voest Alpine Ind Anlagen Method for determination of electromagnetic waves originating from a melt
US5918473A (en) * 1997-05-09 1999-07-06 Alcan International Limited Method and apparatus for measuring quenchant properties of coolants
DE10028304A1 (de) * 2000-06-07 2001-12-13 Sms Demag Ag Verfahren und Vorrichtung zur dezentralen Gießdatenverarbeitung der an einer Stranggießkokille über Sensoren gewonnenen Meßdaten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0236292A3 *

Also Published As

Publication number Publication date
PL361622A1 (en) 2004-10-04
MXPA03003950A (es) 2004-05-24
HUP0303371A2 (en) 2004-01-28
CN1473081A (zh) 2004-02-04
CZ20031218A3 (cs) 2003-10-15
US20040031583A1 (en) 2004-02-19
BR0115073A (pt) 2003-07-29
CA2424368A1 (fr) 2003-03-28
JP2004512958A (ja) 2004-04-30
AU2002224817A1 (en) 2002-05-15
WO2002036292A2 (fr) 2002-05-10
RU2003116517A (ru) 2004-12-10
WO2002036292A3 (fr) 2002-08-08

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