EP0076743B1 - Procédé de refroidissement du produit coulé dans une installation de coulée continue - Google Patents

Procédé de refroidissement du produit coulé dans une installation de coulée continue Download PDF

Info

Publication number
EP0076743B1
EP0076743B1 EP82401769A EP82401769A EP0076743B1 EP 0076743 B1 EP0076743 B1 EP 0076743B1 EP 82401769 A EP82401769 A EP 82401769A EP 82401769 A EP82401769 A EP 82401769A EP 0076743 B1 EP0076743 B1 EP 0076743B1
Authority
EP
European Patent Office
Prior art keywords
heat
mould
extracted
during
cooling
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.)
Expired
Application number
EP82401769A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0076743A1 (fr
Inventor
Alain Chielens
Philippe Benoit
Bernard Roggo
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.)
Fives Cail Babcock SA
Original Assignee
Fives Cail Babcock SA
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 Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Publication of EP0076743A1 publication Critical patent/EP0076743A1/fr
Application granted granted Critical
Publication of EP0076743B1 publication Critical patent/EP0076743B1/fr
Expired legal-status Critical Current

Links

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
    • B22D11/22—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

Definitions

  • the invention relates to a cooling method according to the preamble of the claim. Such a method is known from document EP-A-0036342.
  • the flow rate and the heating of the cooling water of the mold are continuously measured; they can also be determined from data stored in the computer memory and established by tests and predictive calculations.
  • the object of the present invention is to provide the process of document EP-A0036342 with an improvement making it possible to determine more precisely the thermal history of each elementary slice of the product poured during its passage through the ingot mold, taking account of the evolution of the heat flow extracted from the top to the bottom of the mold.
  • the process which is the subject of the present invention is characterized in that in order to determine the quantity of heat extracted from each slice during its stay in the ingot mold, the quantity of overall heat extracted from the ingot mold during this interval is determined at regular time intervals. of time, each slice in the ingot mold is allocated during this time interval a fraction of this total amount of heat which is a function of the distance of the slice to the free surface of the metal in the ingot mold and when a slice comes out from the ingot mold we add up all the amounts of fractional heat which have been allocated to it during its stay in the ingot mold.
  • the number of zones is for example between 2 and 20.
  • the number and the lengths of these zones and the distribution of the overall heat flow between these different zones are defined taking into account the evolution of thermal efficiency from top to bottom of the mold and deducted from the results of measurements and tests carried out beforehand.
  • the heat flow extracted by an area of the ingot mold is distributed between the different elementary slices of the cast product contained in this area; this distribution is made, in each zone, in proportion to the lengths of the sections.
  • the machine for the continuous casting of steel shown schematically in FIG. 1 essentially comprises an ingot mold 10, a corset of guide rollers 12, straightening rollers 14 and a cooling device comprising nozzles or spray or atomization booms grouped by section, all the nozzles or booms of the same section being connected in parallel on a supply pipe fitted with a valve 16, the opening of which is controlled by a regulator 18 to maintain the supply flow rate equal to a set flow rate set by a computer 20.
  • the nozzles or booms are distributed all around the casting bar or, in the case of a rectangular section bar, only on its large faces. Means are provided for manually adjusting the distribution between the different nozzles or ramps of a section, followed the position of the total water flow supplying this section.
  • thermometric rod 22 for measuring the temperature of the molten metal in the distributor 24
  • thermometric probes 26 for measuring the temperature of the water of cooling of the ingot mold, at its inlet and outlet
  • flow meter 28 for measuring the flow rate of the cooling water of the ingot mold
  • pulse generator 30 for measuring the extraction speed of the bar and the calculation of the age of the elements of the bar
  • pyrometer 32 for the measurement of the surface temperature of the bar in the vicinity of the straightening point, etc.
  • the latter determines at regular intervals the set values of the water supply flow rates of the various sections of the cooling device.
  • This regular time interval is for example between 1 and 50 s.
  • This calculation is carried out periodically, for example every 10 s, and the bar is divided into elements the length of which is that of the slice poured during the time interval between two successive calculations.
  • the serial number assigned to each section from its production therefore makes it possible at any time to know its age and its position in the machine.
  • the set values of the supply water flow rates of the different sections of the cooling zone are calculated by integration. Cool and the calculated values are transmitted to the respective controllers 18.
  • the total water flow rate of the secondary cooling zone is calculated and deduces the total air flow to be used, using an equation or a curve establishing a relationship between these two flows.
  • Means are provided for manually adjusting the distribution between the different sections of the total air flow supplying the secondary cooling zone.
  • the computer 20 determines from the values of the flow rate and the temperatures at the inlet and at the outlet of the cooling water of the ingot mold, measured continuously by probes 26 and the flow meter 28, or from a file of values established using forecast simulation calculations, the overall amount of heat extracted in the mold during the time period separating two calculations. Using a distribution curve of the heat flows extracted along the mold, we then determine the amount of heat extracted from each elementary slice in the mold during the period considered and we calculate the amount of heat extracted from a mass unit of each slice. In fig.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP82401769A 1981-10-02 1982-09-29 Procédé de refroidissement du produit coulé dans une installation de coulée continue Expired EP0076743B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8118587 1981-10-02
FR8118587A FR2513912A2 (fr) 1981-10-02 1981-10-02 Procede de controle du refroidissement du produit coule dans une installation de coulee continue

Publications (2)

Publication Number Publication Date
EP0076743A1 EP0076743A1 (fr) 1983-04-13
EP0076743B1 true EP0076743B1 (fr) 1985-08-14

Family

ID=9262688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401769A Expired EP0076743B1 (fr) 1981-10-02 1982-09-29 Procédé de refroidissement du produit coulé dans une installation de coulée continue

Country Status (4)

Country Link
EP (1) EP0076743B1 (enrdf_load_stackoverflow)
JP (1) JPS58125351A (enrdf_load_stackoverflow)
DE (1) DE3265439D1 (enrdf_load_stackoverflow)
FR (1) FR2513912A2 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569361B1 (fr) * 1984-08-24 1987-02-27 Fives Cail Babcock Procede de reglage de l'inclinaison des petits cotes d'une lingotiere de coulee continue a brames
DE102008004911B4 (de) * 2008-01-18 2025-02-13 Sms Group Gmbh Verfahren zur Regelung der Sekundärkühlung von Stranggießanlagen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036342A1 (fr) * 1980-03-13 1981-09-23 FIVES-CAIL BABCOCK, Société anonyme Procédé de contrôle du refroidissement du produit coulé dans une installation de coulée continue

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH552423A (de) * 1972-04-18 1974-08-15 Concast Ag Verfahren und vorrichtung zum steuern des waermeentzuges in kokillen beim stranggiessen.
US4235276A (en) * 1979-04-16 1980-11-25 Bethlehem Steel Corporation Method and apparatus for controlling caster heat removal by varying casting speed

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036342A1 (fr) * 1980-03-13 1981-09-23 FIVES-CAIL BABCOCK, Société anonyme Procédé de contrôle du refroidissement du produit coulé dans une installation de coulée continue

Also Published As

Publication number Publication date
JPS58125351A (ja) 1983-07-26
DE3265439D1 (en) 1985-09-19
FR2513912A2 (fr) 1983-04-08
FR2513912B2 (enrdf_load_stackoverflow) 1984-02-03
EP0076743A1 (fr) 1983-04-13
JPS6349589B2 (enrdf_load_stackoverflow) 1988-10-05

Similar Documents

Publication Publication Date Title
EP0036342B1 (fr) Procédé de contrôle du refroidissement du produit coulé dans une installation de coulée continue
CN101332499B (zh) 一种板坯连铸漏钢预报控制方法
EP1428598B1 (en) Method and online system for monitoring continuous caster start-up operation and predicting start cast breakouts
FR2369548A1 (fr) Procede et installation de mesure du niveau de metal liquide dans une lingotiere
US5289867A (en) Method of and apparatus for cooling with improved control system
CN105848808B (zh) 连续铸造不同种钢的方法
JPH02280951A (ja) 連続鋳造における吹き出し検知方法及びそのための装置
EP0076743B1 (fr) Procédé de refroidissement du produit coulé dans une installation de coulée continue
CN106735029A (zh) 一种将铸坯生产过程参数准确定位到铸坯切片的方法
FR2513911A2 (fr) Procede de controle du refroidissement du produit coule dans une installation de coulee continue
CN104999043A (zh) 一种连铸钢包滑动水口开度在线测量装置及其测量方法
CN111683766A (zh) 用于监测连续铸钢工艺的方法和设备
JP4105839B2 (ja) 連続鋳造における鋳型内鋳造異常検出方法
CN1011387B (zh) 带钢浇注设备及其浇注方法
JP2001259812A (ja) 連続鋳造鋳片の中心偏析評価方法及び低減方法
FR2540016A1 (fr) Procede de reglage du refroidissement secondaire d'une machine de coulee continue
JP3367872B2 (ja) 連続鋳造時の生産命令採片順決定方法
JP6428260B2 (ja) 出湯量の計測方法
FR2554027A2 (fr) Procede de controle du refroidissement du produit coule dans une installation de coulee continue
FR2677565A1 (fr) Procede d'augmentation de la production d'une ligne de coulee continue d'acier.
FR2595598A1 (fr) Procede de demarrage automatique de la coulee d'une barre dans des installations de coulee continue
FR2554026A2 (fr) Procede de controle du refroidissement du produit coule dans une installation de coulee continue
CN114682748B (zh) 一种对内含掉落物的切后坯进行精准定位的方法
JPH0767605B2 (ja) 連続鋳造設備の鋳込終了方法
SU1125094A1 (ru) Способ определени фронта кристаллизации слитка при непрерывном горизонтальном литье и установка дл его осуществлени

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): BE DE

17P Request for examination filed

Effective date: 19830722

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE DE

REF Corresponds to:

Ref document number: 3265439

Country of ref document: DE

Date of ref document: 19850919

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19890930

BERE Be: lapsed

Owner name: FIVES-CAIL BABCOCK S.A.

Effective date: 19890930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19900601