EP0116496A1 - Verfahren zur Regelung der Sekundärkühlung einer Stranggiessmaschine - Google Patents

Verfahren zur Regelung der Sekundärkühlung einer Stranggiessmaschine Download PDF

Info

Publication number
EP0116496A1
EP0116496A1 EP84400162A EP84400162A EP0116496A1 EP 0116496 A1 EP0116496 A1 EP 0116496A1 EP 84400162 A EP84400162 A EP 84400162A EP 84400162 A EP84400162 A EP 84400162A EP 0116496 A1 EP0116496 A1 EP 0116496A1
Authority
EP
European Patent Office
Prior art keywords
speed
product
temperature
cooling
change
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
EP84400162A
Other languages
English (en)
French (fr)
Other versions
EP0116496B1 (de
Inventor
Michel Larrecq
Denis Tromp
Jean-Pierre Birat
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to AT84400162T priority Critical patent/ATE27560T1/de
Publication of EP0116496A1 publication Critical patent/EP0116496A1/de
Application granted granted Critical
Publication of EP0116496B1 publication Critical patent/EP0116496B1/de
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 method for adjusting the secondary cooling of a machine for continuously casting a metallurgical product, of the type according to which the current speed and the past speed of the metallurgical product are taken into account, as known per se.
  • finding the optimal secondary cooling setting amounts to finding a distribution of water along the product poured into the different cooling zones of the machine which ensures these conditions by optimizing another parameter directly related to the productivity of the machine: the casting speed. This optimization is currently well under control.
  • optimizing means finding a method of managing the water flows allowing the above conditions to be satisfied at all times.
  • these water flows are determined as a function of an average speed defined from past and present history of the casting speed (models taking into account the past and the present).
  • the different models in this group are differentiated by the choice of watering curves and the cooling criteria to which they obey, and the method of calculation of the average age.
  • FCB French patent application No. 80/05592
  • J. FAusSAL a publication of the Revue de Métallurgie - Juin 1978, p. 404-415, and whose organization chart for the writing of the computer program is given in the last three pages of this memo.
  • the watering curves are chosen to best achieve the objectives of the cooling, in particular to maintain the surface temperature in the descending zone above the pocket of poor forgeability of the cast product (i.e. above 900 ° C. approximately as a rule) to avoid the formation of transverse cracks on the lower surface.
  • gravity can be systematic in the event of slowing down (or stopping) of the product, because, in this case, the temperature drops irresistibly and can be found in the region of bad forgeability and this even if one stops cooling, by simple game of radiation loss.
  • the object of the invention is to propose a method for adjusting the cooling which is free from the drawbacks mentioned.
  • This object is achieved, within the framework of a process of the aforementioned type at the head of this thesis, because one takes into account not only the present and past speeds of the product but also its future speed so as to compensate by anticipation a change in the temperature of the product in the decoupling zone due to a planned or foreseeable change in its speed.
  • the secondary cooling being managed by a regulation system configured for the actual rate of pouring of the product
  • the change in temperature at the decining point is compensated in advance by temporarily introducing into the regulation system instead of the real speed a fictitious speed between the current speed and the future speed whose effects on temperature are to be compensated for.
  • the invention is based in part on the analysis of the situations encountered in the continuous casting process, this analysis showing that approximately 90% of the events are foreseeable: it is thus possible to provide for a change of the distributor basket, or a feed delay with , for example, half an hour in advance. It is therefore possible to intervene in advance and compensate for the subsequent cooling of the product in the final zone following the slowdown, by prior overheating (with respect to the normal regime) by means of an anticipated reduction in the cooling regime.
  • FIG. 1 is shown the evolution of the casting speed V as a function of time t.
  • the solid curve represents the actual casting speed: the speed remains constant for a certain time (part a), then, an event, for example a change of distributor, imposes a modification of speed, according to a profile b, going up to l 'possible stopping of the casting.
  • an anticipated dummy setpoint such as c, d or e
  • c, d or e is introduced into the regulation system according to the degree of anticipation chosen or possible .
  • Events are not all predictable with the same advance.
  • the anticipated speed profile is not necessarily identical to the actual speed profile at the time of the event, especially since, if the event is in itself predictable, the exact speed profile is not necessarily known with accuracy in advance, and this is all the more so as one generally has poor control over speed drops in practice.
  • FIG. 2 represents, as a function of the position L of an element of the product poured over the metallurgical height, the evolution of the temperature T of said element.
  • the discontinuous curve f represents the ideal temperature profile where the temperature is seen to decrease from the maximum temperature at the outlet of the ingot mold to the temperature corresponding to the threshold of forgeability M, generally around 900 ° C at the level of the delamination zone N.
  • the curve & represents the temperature profile during an event characterized by a drop in casting speed. This event disturbs the regulation and causes the surface temperature to drop below the forgeability threshold, in particular at the level of the declining zone. This problem arises in particular from the fact that the heat regulation operates fairly well for liquid steel, but is more difficult to control for solid steel, therefore, essentially at the level of the last elements, below the liquid well of the product. .
  • the curve h represents the temperature curve obtained thanks to the invention, where, having introduced into the regulation management system, an anticipated dummy speed profile, it was possible to maintain the temperature profile above the threshold of forgeability M.
  • FIG. 3 represents the curve for the evolution of the surface temperature at the level of the decinking zone, for elements taken out of the mold at times S.
  • curve w corresponds to the constant evolution in a conventional system for managing the regulation configured on the real speed curve ab
  • curves x, y, z correspond to the evolution observed in the context of the invention by anticipating the event according to the respective speed profiles c, d, e of FIG. 1.
  • the threshold of poor forgeability is set at 1000 ° C. (represented by the line k)
  • the change of distributor distributes each curve w, x, y. z below said threshold, from point A.
  • the curve w only goes back above the threshold at point B
  • the regulation according to the invention according to the curve z we are above the threshold from point C, located about halfway between A and B.
  • the z regulation we substantially divide by half the length of the poured product reaching decoltage at a temperature of - below the threshold of good forgeability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Soil Working Implements (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP84400162A 1983-01-28 1984-01-25 Verfahren zur Regelung der Sekundärkühlung einer Stranggiessmaschine Expired EP0116496B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400162T ATE27560T1 (de) 1983-01-28 1984-01-25 Verfahren zur regelung der sekundaerkuehlung einer stranggiessmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8301404 1983-01-28
FR8301404A FR2540016B1 (fr) 1983-01-28 1983-01-28 Procede de reglage du refroidissement secondaire d'une machine de coulee continue

Publications (2)

Publication Number Publication Date
EP0116496A1 true EP0116496A1 (de) 1984-08-22
EP0116496B1 EP0116496B1 (de) 1987-06-03

Family

ID=9285413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400162A Expired EP0116496B1 (de) 1983-01-28 1984-01-25 Verfahren zur Regelung der Sekundärkühlung einer Stranggiessmaschine

Country Status (10)

Country Link
US (1) US4562880A (de)
EP (1) EP0116496B1 (de)
JP (1) JPS59141356A (de)
AT (1) ATE27560T1 (de)
AU (1) AU569486B2 (de)
CA (1) CA1219729A (de)
DE (1) DE3464018D1 (de)
ES (1) ES8500104A1 (de)
FR (1) FR2540016B1 (de)
ZA (1) ZA84511B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643580A1 (fr) * 1989-02-27 1990-08-31 Siderurgie Fse Inst Rech Procede de reglage du refroidissement secondaire d'une machine de coulee continue de produits metalliques
CN112355265A (zh) * 2020-11-23 2021-02-12 福建三宝钢铁有限公司 连铸板坯三角区裂纹控制方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4699202A (en) * 1986-10-02 1987-10-13 Bethlehem Steel Corporation System and method for controlling secondary spray cooling in continuous casting
US6264767B1 (en) 1995-06-07 2001-07-24 Ipsco Enterprises Inc. Method of producing martensite-or bainite-rich steel using steckel mill and controlled cooling
AU4596899A (en) 1998-07-10 2000-02-01 Ipsco Inc. Method and apparatus for producing martensite- or bainite-rich steel using steckel mill and controlled cooling
JP4813645B2 (ja) * 1999-11-16 2011-11-09 日立金属株式会社 磁極ユニット、その組立方法および磁界発生装置
US20090084517A1 (en) 2007-05-07 2009-04-02 Thomas Brian G Cooling control system for continuous casting of metal
AT512214B1 (de) 2011-12-05 2015-04-15 Siemens Vai Metals Tech Gmbh Prozesstechnische massnahmen in einer stranggiessmaschine bei giessstart, bei giessende und bei der herstellung eines übergangsstücks
ES2443842B1 (es) * 2012-08-16 2015-02-10 Gerdau Investigacion Y Desarrollo Europa, S.A. Procedimiento de control de un sistema de refrigeración secundaria en el proceso de colada continua.
EP3318342A1 (de) 2016-11-07 2018-05-09 Primetals Technologies Austria GmbH Verfahren zum betreiben einer giesswalzverbundanlage
CN106735034B (zh) * 2016-12-20 2019-03-05 中冶连铸技术工程有限责任公司 板坯二冷水幅切控制方法
CN116329512B (zh) * 2023-03-07 2025-12-02 山东钢铁股份有限公司 一种连铸定径浇筑工艺二次冷却配水方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2344438A1 (de) * 1972-09-06 1974-04-11 Concast Ag Verfahren zum steuern der kuehlung eines aus einer durchlaufkokille austretenden stranges und vorrichtung zur durchfuehrung dieses verfahrens
BE827040A (fr) * 1975-03-21 1975-09-22 Procede pour controler la coulee continue de metaux
EP0036342A1 (de) * 1980-03-13 1981-09-23 FIVES-CAIL BABCOCK, Société anonyme Verfahren zur Kontrolle der Strangkühlung beim Stranggiessen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073332A (en) * 1974-09-26 1978-02-14 Centre De Recherches Metallurgiques Centrum Voor Research In De Metallurgie Method of controlling continuous casting of a metal
JPS6016300B2 (ja) * 1977-02-22 1985-04-24 日本鋼管株式会社 連続鋳造設備における２次冷却水制御方法及びその装置
JPS5633157A (en) * 1979-08-28 1981-04-03 Sumitomo Metal Ind Ltd Controlling method for secondary cooling water in continuous casting machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2344438A1 (de) * 1972-09-06 1974-04-11 Concast Ag Verfahren zum steuern der kuehlung eines aus einer durchlaufkokille austretenden stranges und vorrichtung zur durchfuehrung dieses verfahrens
BE827040A (fr) * 1975-03-21 1975-09-22 Procede pour controler la coulee continue de metaux
EP0036342A1 (de) * 1980-03-13 1981-09-23 FIVES-CAIL BABCOCK, Société anonyme Verfahren zur Kontrolle der Strangkühlung beim Stranggiessen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REVUE DE METALLURGIE 1075, volume 75, no. 6, 1978 R. ALBERNY et al. "Optimisation du refroidissement secondaire en coulée continue de brames d'acier extra-doux", pages 353-362 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643580A1 (fr) * 1989-02-27 1990-08-31 Siderurgie Fse Inst Rech Procede de reglage du refroidissement secondaire d'une machine de coulee continue de produits metalliques
EP0385904A1 (de) * 1989-02-27 1990-09-05 Institut De Recherches De La Siderurgie Francaise (Irsid) Verfahren zur Regelung der Sekundärkühlung einer Stranggiessmaschine für metallische Produkte
CN112355265A (zh) * 2020-11-23 2021-02-12 福建三宝钢铁有限公司 连铸板坯三角区裂纹控制方法
CN112355265B (zh) * 2020-11-23 2021-07-30 福建三宝钢铁有限公司 连铸板坯三角区裂纹控制方法

Also Published As

Publication number Publication date
JPS59141356A (ja) 1984-08-14
ES529239A0 (es) 1984-10-01
ZA84511B (en) 1984-09-26
FR2540016A1 (fr) 1984-08-03
AU569486B2 (en) 1988-02-04
ATE27560T1 (de) 1987-06-15
CA1219729A (fr) 1987-03-31
ES8500104A1 (es) 1984-10-01
US4562880A (en) 1986-01-07
EP0116496B1 (de) 1987-06-03
AU2364084A (en) 1984-08-02
FR2540016B1 (fr) 1985-06-07
DE3464018D1 (en) 1987-07-09

Similar Documents

Publication Publication Date Title
EP0116496B1 (de) Verfahren zur Regelung der Sekundärkühlung einer Stranggiessmaschine
EP0036342B1 (de) Verfahren zur Kontrolle der Strangkühlung beim Stranggiessen
FR2668097A1 (fr) Procede de regulation de temperature pour une machine de moulage par injection.
EP0010538A1 (de) Gerichtetes Erstarrungsverfahren mit kontrollierter Geschwindigkeit und nach diesem Verfahren hergestellter Gegenstand
RU2510782C1 (ru) Способ отливки составного слитка с компенсацией изменения температуры металла
CN102216003A (zh) 用于在起动铸造过程时控制铸坯铸造设备中的铸坯的凝固的方法和装置
FR2551373A1 (fr) Procede et dispositif de reglage d'un niveau de liquide, notamment pour moule de coulee continue
EP0691895B1 (de) Verfahren und vorrichtung zur regelung des metallspiegels in einer strangusskokille
FR2572316A1 (fr) Procede de reglage des conditions de coulee continue
FR2579120A1 (fr) Procede et dispositif de mise en marche automatique d'une installation de coulee continue
EP0776708B1 (de) Verfahren und Vorrichtung zum geregelten Vorwalzen von aus einer Stranggiessanlage austretenden Dünnbramme
CN1200788C (zh) 高速连铸设备的运行方法及其实施系统
CN1054558C (zh) 金属特别是方钢坯的连续铸造法
MX2014004229A (es) Metodo para controlar una planta de fundicion.
CN102228971B (zh) 在线模拟连铸结晶器内钢液凝固传热过程的仿真方法
EP2990904B1 (de) Verfahren zur steuerung des stromverbrauchs eines stromnetzes
JPS6049850A (ja) 連続鋳造設備における二次冷却材流量制御方法
EP0385904A1 (de) Verfahren zur Regelung der Sekundärkühlung einer Stranggiessmaschine für metallische Produkte
FR2554026A2 (fr) Procede de controle du refroidissement du produit coule dans une installation de coulee continue
RU99121697A (ru) Способ динамического регулирования охлаждения слитка на установке непрерывной разливки металла
JPS59212157A (ja) 連鋳２次冷却水の制御方法
EP0382702B1 (de) Verfahren zur Herstellung einer dünnen Stahlbramme durch Stranggiessen
CN102497944A (zh) 在坯条连续铸造机器中浇铸金属熔液的装置和方法
JP3290981B2 (ja) 溶銅の製造方法
CN118751880A (zh) 一种铸铁型材水平连铸机智能控制系统

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): AT BE CH DE GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19850207

17Q First examination report despatched

Effective date: 19860219

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 27560

Country of ref document: AT

Date of ref document: 19870615

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3464018

Country of ref document: DE

Date of ref document: 19870709

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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890131

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19901224

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19910117

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910118

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19910121

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910124

Year of fee payment: 8

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19910208

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19910227

Year of fee payment: 8

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920125

Ref country code: GB

Effective date: 19920125

Ref country code: AT

Effective date: 19920125

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

Ref country code: SE

Effective date: 19920126

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

Ref country code: LI

Effective date: 19920131

Ref country code: CH

Effective date: 19920131

Ref country code: BE

Effective date: 19920131

BERE Be: lapsed

Owner name: INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE

Effective date: 19920131

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

Ref country code: NL

Effective date: 19920801

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19921001

EUG Se: european patent has lapsed

Ref document number: 84400162.8

Effective date: 19920806