EP0223078A1 - Procédé de démarrage d'une installation de coulée continue à plusieurs lignes - Google Patents

Procédé de démarrage d'une installation de coulée continue à plusieurs lignes Download PDF

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Publication number
EP0223078A1
EP0223078A1 EP86114413A EP86114413A EP0223078A1 EP 0223078 A1 EP0223078 A1 EP 0223078A1 EP 86114413 A EP86114413 A EP 86114413A EP 86114413 A EP86114413 A EP 86114413A EP 0223078 A1 EP0223078 A1 EP 0223078A1
Authority
EP
European Patent Office
Prior art keywords
level
signal level
closures
pouring
actual
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
EP86114413A
Other languages
German (de)
English (en)
Other versions
EP0223078B1 (fr
Inventor
Bernhard Dipl.-Ing. Tinnes
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.)
Metacon AG
Original Assignee
Metacon 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
Application filed by Metacon AG filed Critical Metacon AG
Priority to AT86114413T priority Critical patent/ATE41340T1/de
Publication of EP0223078A1 publication Critical patent/EP0223078A1/fr
Application granted granted Critical
Publication of EP0223078B1 publication Critical patent/EP0223078B1/fr
Expired legal-status Critical Current

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    • 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
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/147—Multi-strand plants
    • 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
    • B22D11/161—Controlling or regulating processes or operations for automatic starting the casting process

Definitions

  • the invention relates to a method for starting up a continuous casting plant with several strands, in particular for pouring steel melt from an intermediate vessel, into several continuous casting molds by means of adjustable pouring closures, a target fill level of the melt being within a measuring distance, and the strands which are formed by a strand withdrawal unit be subtracted at the same speed.
  • the present invention is a further development of a casting process which is controlled within a fill level measuring section of molds by means of two signal levels via pouring closures with a constant take-off speed.
  • the object on which the invention is based is essentially to be seen in streamlining the casting by shortening the casting time using simplified process steps.
  • the strand extraction unit is switched on after reaching a lower signal level within the measuring section by the actual filling levels of all molds or by the actual filling level first reaching an upper signal level lying within the measuring section and each actual filling level starting from the lower signal level along a predetermined ascent curve into the target level.
  • the actual fill level of each mold can be quickly and separately transferred to the normal inflow control of the target fill level, when the strand withdrawal unit is appropriately switched on in a filling level section of the mold between the lower and the upper signal level of the measuring section, which guarantees the withdrawal safety of the strands.
  • the trigger drive reacts accordingly to what happens first when the actual fill levels rise in the molds. Either it switches on when the lower actual level is exceeded by the last actual level or, if this is not the case, as soon as the first actual level has reached the upper signal level. After the trigger drive has been switched on, the pouring closures automatically close those molds whose actual fill level is still below the lower signal level.
  • the latter is also used for pouring with initially only up to 50% opened spout closures, of which the spout closures that are most distant from the filling point of the intermediate vessel or belong to the outer molds are throttled less than those of the inner molds. This effectively takes into account the lower melt temperatures prevailing in the outer districts of a continuous caster or an intermediate vessel.
  • molten steel is fed to an intermediate vessel 3 via a controllable pouring closure 2, which in turn has three pouring closures 4 in the form of slide closures, which regulate the inflow of the melt through pouring tubes 5 into continuous casting molds A, B, C.
  • each pouring closure 4 is mechanically coupled to an actuator 6, the respective operating position of which is held by a position meter 7.
  • the pouring tubes 5 protrude with their free ends into the molds A, B, C, whose set level 8 set for normal operation lies within a measuring section 9 of a mold level A, B, C assigned to each mold, consisting of transmitter 10 and receiver 11.
  • Downstream of the molds A, B, C is a secondary cooling device, which is not shown for the sake of simplicity, and a strand take-off unit common to the cold strands 18, which has drive rollers 12, a take-off drive 13, a drive controller 14 and a take-off speed meter 15.
  • the latter transmits its measured values to the drive controller 14 and to a processor 16 which also receives and processes the measured values of the position meter 7 which controls the degree of opening of the pouring closures 4 and the receiver 11 of the fill level measuring devices 10, 11.
  • the data obtained go to a control computer 17 integrated in the processor 16, which gives corresponding control commands to the actuators 6 of the pouring closures 4 and to the drive controller 14 of the strand withdrawal unit 12 to 15.
  • the take-off speed is fixed as a constant, ie the cold strands 18 formed in the molds A, B, C are formed by the common strand take-off unit 12 to 15 subtracted constant speed, which means that the target level 8 intended for the molds A, B, C is regulated solely from the inflow side by means of the pouring closures 4.
  • the pouring closures 4 are held in the normal pouring mode at the desired fill level 8 in a throttle position, which enables both opening and closing.
  • the measuring section 9 is equipped with a lower signal level 21 and an upper signal level 22 which are used to control the pouring closures 4 and the trigger drive 13 serve.
  • the casting begins with the opening of the pouring closures 4, so that actual fill levels 20 form in the molds A, B, C above the cold strand heads 19, but these are rarely at the same level.
  • the pouring closures 4 are initially only partially, preferably about 35%, but not fully opened during the pouring. This results in 4 control reserves for the pouring closures both in the closing and in the opening direction, which allow each actual filling level 20 rising in the molds A, B, C (cf. FIG. 2) from the lower signal level 21 to the desired filling level 8 to let it ascend along a predetermined ascent curve 40, which is adapted to the operating conditions of the respective system by appropriate programming of the processor 16.
  • the criterion of the ascending curve 40 which determines the filling speed of the molds A, B, C during casting, is never to be so flat that the freezing limit of the molten steel in the pouring closures 4 has fallen below, and not to be as steep as that the upper slosh limit on Mold edge is exceeded.
  • the regulation of each pouring closure 4 according to the ascent curve 40 begins, as mentioned, at the lower signal level 21 and is triggered by the actual fill level 20 ascending in the corresponding molds A, B, C. If the last of all the actual filling levels A20, B20 or C20 exceeds the lower signal level 21, then the control computer 17 of the processor 16 switches on the trigger drive 13 of the common trigger unit 13 to 15 for the cold strands 18.
  • the actual levels A20, B20, C20 continue to rise independently of one another on the basis of the same criteria and consequently graphically parallel ascent curves 40 until they settle into the nominal level 8 set for normal casting operation If the actual fill level is 20, it would spill over the mold edge. If an actual filling level 20 of a mold A, B or C has already arrived at the upper signal level 22 while casting, while others are still below the lower signal level 21, 20 closing commands are issued for the pouring closures 4 of the actual filling levels remaining in the said manner.
  • the graph of FIG. 2 applies to the actual fill levels 20 shown in FIG. 1.
  • the actual fill level 20 of the mold C reached the lower signal level 21 in the time Ct after the simultaneous throttled opening of all pouring closures 4, the one for the Mold C responsible pouring spout 4 takes over the regulation of the melt inlet according to the designed ascent curve 40.
  • the actual fill levels 20 of the molds B and A successively pass the signal level 21 in the times Bt and At and effect the regulation there according to the ascending curve 40. None of the actual fill levels 20 has remained significantly.
  • the actual fill Stand A20 reaches the lower signal level 21 before the actual fill level C20 has caught up with the upper signal level 22, so that the start command for the trigger drive 13 originates from the actual fill level A20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP86114413A 1985-10-26 1986-10-17 Procédé de démarrage d'une installation de coulée continue à plusieurs lignes Expired EP0223078B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86114413T ATE41340T1 (de) 1985-10-26 1986-10-17 Verfahren zum anfahren einer stranggiessanlage mit mehreren straengen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3538222 1985-10-26
DE19853538222 DE3538222A1 (de) 1985-10-26 1985-10-26 Verfahren zum anfahren einer stranggiessanlage mit mehreren straengen

Publications (2)

Publication Number Publication Date
EP0223078A1 true EP0223078A1 (fr) 1987-05-27
EP0223078B1 EP0223078B1 (fr) 1989-03-15

Family

ID=6284598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114413A Expired EP0223078B1 (fr) 1985-10-26 1986-10-17 Procédé de démarrage d'une installation de coulée continue à plusieurs lignes

Country Status (13)

Country Link
EP (1) EP0223078B1 (fr)
JP (1) JP2540032B2 (fr)
CN (1) CN1008985B (fr)
AT (1) ATE41340T1 (fr)
CA (1) CA1265912A (fr)
CZ (1) CZ281650B6 (fr)
DE (2) DE3538222A1 (fr)
GR (1) GR3000078T3 (fr)
IN (1) IN163970B (fr)
MX (1) MX172000B (fr)
PL (1) PL154653B3 (fr)
SU (1) SU1447270A3 (fr)
ZA (1) ZA865223B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937752A1 (de) * 1988-11-22 1991-05-16 Hitachi Shipbuilding Eng Co Verfahren zum automatischen anfahren einer stranggussanlage
FR2677284A1 (fr) * 1991-06-07 1992-12-11 Pechiney Aluminium Procede et appareillage pour la coulee automatique de demi-produits.
EP0564674A1 (fr) * 1992-04-06 1993-10-13 Zimmermann & Jansen GmbH Procédé de démarrage d'une installation de coulée continue
EP0855238A1 (fr) * 1997-01-24 1998-07-29 Alusuisse Technology & Management AG Procédé pour la coulée continue verticale de métaux
EP1172160A1 (fr) * 2000-07-11 2002-01-16 SMS Demag AG Procédé et installation de coulée continue, avec dispositif de mesure du niveau de métal liquide dans la lingotière, en particulier de l'acier liquide
WO2002085557A3 (fr) * 2001-04-19 2003-08-28 Alcoa Inc Systeme d'alimentation en metal liquide par pression continue, et procede de formation d'articles metalliques continus
US7934627B2 (en) 2005-10-13 2011-05-03 Alcoa Inc. Apparatus and method for high pressure extrusion with molten aluminum
EP3231532A1 (fr) * 2016-04-12 2017-10-18 Primetals Technologies Austria GmbH Procédé de démarrage et d'arrêt d'une machine à fondre plusieurs filets, entraînement de garniture et machine à fondre plusieurs filets
CN113441693A (zh) * 2020-03-25 2021-09-28 首要金属科技奥地利有限责任公司 铸坯铸造设备和用于运行铸坯铸造设备的方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62183952A (ja) * 1986-02-07 1987-08-12 Sumitomo Metal Ind Ltd 鋳型内湯面レベル制御方法
JPS62183951A (ja) * 1986-02-07 1987-08-12 Sumitomo Metal Ind Ltd 鋳型内湯面レベル制御方法
GB2249978B (en) * 1990-11-26 1994-08-24 Ishikawajima Harima Heavy Ind Tundish flow control
CN102430728B (zh) * 2011-12-07 2013-07-10 中宁县锦宁铝镁新材料有限公司 一种多结晶器水平连铸中间包及利用其实施的连铸工艺
CN103112709B (zh) * 2013-03-11 2015-11-04 嘉诺资源再生技术（苏州）有限公司 一种在线排料器
CN105215305B (zh) * 2015-10-14 2017-09-01 中冶连铸技术工程有限责任公司 一种三机三流板坯连铸机生产线
EP3519124B1 (fr) * 2016-09-27 2021-03-24 Hydro Aluminium Rolled Products GmbH Procédé de multi-moulage de barres métalliques
US10913108B2 (en) * 2017-09-12 2021-02-09 Wagstaff, Inc. Dynamically positioned diffuser for metal distribution during a casting operation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019114A1 (fr) * 1979-04-27 1980-11-26 Concast Holding Ag Procédé et dispositif pour la coulée continue de plusieurs barres
EP0149447A2 (fr) * 1983-12-29 1985-07-24 VOEST-ALPINE Aktiengesellschaft Procédé pour la régulation du niveau dans les lingotières de coulée continue d'une installation de coulée continue multiple et dispositif pour la mise en oeuvre de ce procédé
GB2163983A (en) * 1984-09-05 1986-03-12 Metacon Ag Method of casting melt into a plurality of continuous casting moulds

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019114A1 (fr) * 1979-04-27 1980-11-26 Concast Holding Ag Procédé et dispositif pour la coulée continue de plusieurs barres
EP0149447A2 (fr) * 1983-12-29 1985-07-24 VOEST-ALPINE Aktiengesellschaft Procédé pour la régulation du niveau dans les lingotières de coulée continue d'une installation de coulée continue multiple et dispositif pour la mise en oeuvre de ce procédé
GB2163983A (en) * 1984-09-05 1986-03-12 Metacon Ag Method of casting melt into a plurality of continuous casting moulds

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937752A1 (de) * 1988-11-22 1991-05-16 Hitachi Shipbuilding Eng Co Verfahren zum automatischen anfahren einer stranggussanlage
FR2677284A1 (fr) * 1991-06-07 1992-12-11 Pechiney Aluminium Procede et appareillage pour la coulee automatique de demi-produits.
EP0564674A1 (fr) * 1992-04-06 1993-10-13 Zimmermann & Jansen GmbH Procédé de démarrage d'une installation de coulée continue
EP0855238A1 (fr) * 1997-01-24 1998-07-29 Alusuisse Technology & Management AG Procédé pour la coulée continue verticale de métaux
WO1998032559A1 (fr) * 1997-01-24 1998-07-30 Alusuisse Technology & Management Ag Procede pour la coulee continue verticale de metaux
AU716841B2 (en) * 1997-01-24 2000-03-09 Alusuisse Technology & Management Ag Method for vertical,continuous casting of metals
EP1172160A1 (fr) * 2000-07-11 2002-01-16 SMS Demag AG Procédé et installation de coulée continue, avec dispositif de mesure du niveau de métal liquide dans la lingotière, en particulier de l'acier liquide
WO2002085557A3 (fr) * 2001-04-19 2003-08-28 Alcoa Inc Systeme d'alimentation en metal liquide par pression continue, et procede de formation d'articles metalliques continus
US6712125B2 (en) 2001-04-19 2004-03-30 Alcoa Inc. Continuous pressure molten metal supply system and method for forming continuous metal articles
US7934627B2 (en) 2005-10-13 2011-05-03 Alcoa Inc. Apparatus and method for high pressure extrusion with molten aluminum
EP3231532A1 (fr) * 2016-04-12 2017-10-18 Primetals Technologies Austria GmbH Procédé de démarrage et d'arrêt d'une machine à fondre plusieurs filets, entraînement de garniture et machine à fondre plusieurs filets
CN113441693A (zh) * 2020-03-25 2021-09-28 首要金属科技奥地利有限责任公司 铸坯铸造设备和用于运行铸坯铸造设备的方法

Also Published As

Publication number Publication date
IN163970B (fr) 1988-12-17
MX172000B (es) 1993-11-29
DE3662339D1 (en) 1989-04-20
JPS62101359A (ja) 1987-05-11
DE3538222A1 (de) 1987-05-27
GR3000078T3 (en) 1990-10-31
CN1008985B (zh) 1990-08-01
DE3538222C2 (fr) 1989-05-11
SU1447270A3 (ru) 1988-12-23
CN86104290A (zh) 1987-05-06
PL154653B3 (en) 1991-09-30
EP0223078B1 (fr) 1989-03-15
CZ281650B6 (cs) 1996-12-11
CA1265912A (fr) 1990-02-20
CZ772186A3 (en) 1996-09-11
ZA865223B (en) 1987-03-25
JP2540032B2 (ja) 1996-10-02
ATE41340T1 (de) 1989-04-15

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