EP1103323A2 - Procédé et dispositif pour la coulée continue d'acier - Google Patents

Procédé et dispositif pour la coulée continue d'acier Download PDF

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Publication number
EP1103323A2
EP1103323A2 EP00125313A EP00125313A EP1103323A2 EP 1103323 A2 EP1103323 A2 EP 1103323A2 EP 00125313 A EP00125313 A EP 00125313A EP 00125313 A EP00125313 A EP 00125313A EP 1103323 A2 EP1103323 A2 EP 1103323A2
Authority
EP
European Patent Office
Prior art keywords
mold
water
constant
speed
copper
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Withdrawn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
EP00125313A
Other languages
German (de)
English (en)
Other versions
EP1103323A3 (fr
Inventor
Fritz-Peter Prof. Dr. Pleschiutschnigg
Erwin Wosch
Stephan Feldhaus
Michael Dr. Vonderbank
Thomas Ulke
Uwe Plociennik
Jürgen Friedrich
Werner Dr. Rahmfeld
Uwe Kopfstedt
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
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1103323A2 publication Critical patent/EP1103323A2/fr
Publication of EP1103323A3 publication Critical patent/EP1103323A3/fr
Withdrawn legal-status Critical Current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
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould

Definitions

  • the invention preferably relates to a method and a device for continuous casting of steel by means of a cooled plate of certain thickness Copper mold.
  • Continuous casting with traveling molds and standing molds preferably continuous casting with oscillating stand molds of thin slabs with a Thickness between 150 mm and 40 mm, but also of slabs, blooms and Sticks with square as well as round format moves more and more too high casting speeds of up to 10 m / min.
  • Figures 2a and b reflect the state of the art, that with increasing casting speed due to the decreasing slag film thickness (6) the distance between the recrystallization temperature (14) of the cold rolled Copper of, for example, 600 ° C. and the copper plate skin temperatures on the steel side (9), but also on the water side (10) is reduced, so that the service life (15) of the copper plates sinks.
  • the cooling water (3) of the mold can run the risk of boiling exceed and a gas film (16), the so-called Leidenfrost, between the copper plate wall (11) and the flowing water column (17) build up, whereby the Heat transfer is massively disturbed, and the heat flow (1) is non-uniform across the mold width and mold height. This in turn leads to a additional strain on the strand shell (5), but also on the copper plate (7).
  • the invention is therefore based on the object of a method and a device to create, with which the copper plate skin temperature changes with changing Keeping the casting speed constant.
  • FIG. 1 schematically shows the section through a mold 23 for a casting speed 8 through v c 1 (partial image a) and v c 2 (partial image b).
  • the steel flows from an immersion spout 2.1 and guides its energy 1 along a heat potential gradient 1.2 into the mold cooling water 3 through the media of liquid steel 4, strand shell 5, slag film 6 and copper plate 7.
  • With increasing casting speed 8.2 it drops the slag film thickness 6.1 and the strand shell thickness 5.1 and the copper plate skin temperature 9, 10 increases and the mold load 1.1, expressed as MW / m 2 .
  • the partial images a and b show that the mold load increases with increasing casting speed v c 2 8.2> v c 1 8.1, expressed as mold temperature 9, 10 and as MW / m 2 .
  • the partial image a in FIG. 2 shows the thinning slag film thickness 6.1 in mm and the increasing mold load 1.1 in MW / m 2 .
  • sub-picture b represents a constant amount of cooling water Q H2O • in l / min 18 or the constant water speed in m / sec 19, a constant copper plate thickness 7.1 and the copper plate skin temperatures 9, 10 both on the steel side and on the water side via the casting speed 8.
  • FIG. 4 shows a mold water cooling circuit 21, which is characterized by the inventive Solution of a controllable heat exchanger 22, which in the sense of the figures 2c and 3 is driven, a control of the mold skin temperatures 9, 10 enables.
  • the adjustable heat exchanger to control the mold water inlet temperature 13 represents the process parameter, which is a function of the casting speed 20 ensures a constant mold skin temperature on the steel side 9.
  • the figure also shows the plate mold 23 for the production of slabs with the connection of the mold water circuit 21, consisting of a mold pump 24.1 and a water pressure bladder accumulator 24.2 for regulating the amount of water 18 and the water pressure 12 in a conventional design.
  • the idea essential to the invention arises in the design of the heat exchanger 22 and introduction into the mold cooling water circuit 21 as a controlled variable for the mold water inlet temperature 13.
  • To regulate the mold water temperature 13 serves the control area 22.1 of the heat exchanger 22 and the Cooling capacity e.g. an open cooling tower 25, which controls the water temperature 25.1 and the amount of cooling water 25.2.
  • the heat exchanger 22 has a large cooling water inlet area from approx. 10 to 45 ° C and the inlet temperature over a Control loop is linked to the mold.
  • the heat exchanger up to 10 ° C as the minimum water inlet temperature to operate if e.g. a natural water reservoir with average annual temperatures of, for example, 7 ° C is present. In this case, however Make sure that no condensation water forms before pouring on the copper walls of the mold. This can be done by radiators or preheating of the mold cooling water can be avoided until the start of pouring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP00125313A 1999-11-29 2000-11-29 Procédé et dispositif pour la coulée continue d'acier Withdrawn EP1103323A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19957414 1999-11-29
DE19957414 1999-11-29

Publications (2)

Publication Number Publication Date
EP1103323A2 true EP1103323A2 (fr) 2001-05-30
EP1103323A3 EP1103323A3 (fr) 2001-09-19

Family

ID=7930734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00125313A Withdrawn EP1103323A3 (fr) 1999-11-29 2000-11-29 Procédé et dispositif pour la coulée continue d'acier

Country Status (1)

Country Link
EP (1) EP1103323A3 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002085555A2 (fr) * 2001-04-20 2002-10-31 Sms Demag Aktiengesellschaft Procede et dispositif de coulee continue de metal
DE10160739A1 (de) * 2001-09-28 2003-04-17 Sms Demag Ag Verfahren und Einrichtung zum Kühlen der Kupferplatten einer Stranggießkokille für flüssige Metalle, insbesondere für flüssigen Stahl
WO2003035306A1 (fr) * 2001-10-18 2003-05-01 Sms Demag Aktiengesellschaft Procede et dispositif pour optimiser la capacite de refroidissement d'une coquille de coulee continue pour metaux liquides, notamment acier liquide
CN103192047A (zh) * 2013-02-21 2013-07-10 内蒙古包钢钢联股份有限公司 新型连铸机结晶器冷却水自动控制系统及其控制方法
CN106200593A (zh) * 2016-08-29 2016-12-07 中国重型机械研究院股份公司 一种智能化连铸过程控制系统及其控制方法
CN109807298A (zh) * 2019-03-27 2019-05-28 芜湖云邦铜业有限公司 一种铜杆上引连铸冷却水流速自动控制方法
CN110576160A (zh) * 2019-09-26 2019-12-17 中冶赛迪工程技术股份有限公司 一种连铸机结晶器水的控制系统及方法
CN114833317A (zh) * 2022-05-06 2022-08-02 包头钢铁（集团）有限责任公司 一种提高宽板铸机结晶器铜板使用寿命的方法
CN114918395A (zh) * 2022-04-22 2022-08-19 首钢集团有限公司 一种结晶器冷却水流量的设定方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151952A (ja) * 1982-03-02 1983-09-09 Kobe Steel Ltd 電磁撹「はん」用鋳型の冷却方法
DE3423475A1 (de) * 1984-06-26 1984-11-29 Mannesmann AG, 4000 Düsseldorf Verfahren und einrichtung zum stranggiessen von fluessigen metallen, insbesondere von fluessigem stahl
JPS6049849A (ja) * 1983-08-26 1985-03-19 Kawasaki Heavy Ind Ltd 水平連続鋳造のモ−ルド冷却水供給装置
JPS63104754A (ja) * 1986-10-20 1988-05-10 Mitsubishi Heavy Ind Ltd スプレ冷却モ−ルドの水量調節方法
EP0943382A1 (fr) * 1998-03-12 1999-09-22 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif de contrÔle du débit calorifique dans une lingotière de coulée continue lors de la coulée de brames

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151952A (ja) * 1982-03-02 1983-09-09 Kobe Steel Ltd 電磁撹「はん」用鋳型の冷却方法
JPS6049849A (ja) * 1983-08-26 1985-03-19 Kawasaki Heavy Ind Ltd 水平連続鋳造のモ−ルド冷却水供給装置
DE3423475A1 (de) * 1984-06-26 1984-11-29 Mannesmann AG, 4000 Düsseldorf Verfahren und einrichtung zum stranggiessen von fluessigen metallen, insbesondere von fluessigem stahl
JPS63104754A (ja) * 1986-10-20 1988-05-10 Mitsubishi Heavy Ind Ltd スプレ冷却モ−ルドの水量調節方法
EP0943382A1 (fr) * 1998-03-12 1999-09-22 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif de contrÔle du débit calorifique dans une lingotière de coulée continue lors de la coulée de brames

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 271 (M-260), 3. Dezember 1983 (1983-12-03) & JP 58 151952 A (KOBE SEIKOSHO KK), 9. September 1983 (1983-09-09) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 179 (M-399), 24. Juli 1985 (1985-07-24) & JP 60 049849 A (KAWASAKI JUKOGYO KK), 19. März 1985 (1985-03-19) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 343 (M-741), 14. September 1988 (1988-09-14) & JP 63 104754 A (MITSUBISHI HEAVY IND LTD), 10. Mai 1988 (1988-05-10) *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002085555A2 (fr) * 2001-04-20 2002-10-31 Sms Demag Aktiengesellschaft Procede et dispositif de coulee continue de metal
WO2002085555A3 (fr) * 2001-04-20 2003-02-13 Sms Demag Ag Procede et dispositif de coulee continue de metal
DE10160739A1 (de) * 2001-09-28 2003-04-17 Sms Demag Ag Verfahren und Einrichtung zum Kühlen der Kupferplatten einer Stranggießkokille für flüssige Metalle, insbesondere für flüssigen Stahl
DE10160739C2 (de) * 2001-09-28 2003-07-24 Sms Demag Ag Verfahren und Einrichtung zum Kühlen der Kupferplatten einer Stranggießkokille für flüssige Metalle, insbesondere für flüssigen Stahl
WO2003035306A1 (fr) * 2001-10-18 2003-05-01 Sms Demag Aktiengesellschaft Procede et dispositif pour optimiser la capacite de refroidissement d'une coquille de coulee continue pour metaux liquides, notamment acier liquide
CN103192047B (zh) * 2013-02-21 2015-09-16 内蒙古包钢钢联股份有限公司 连铸机结晶器冷却水自动控制系统及其控制方法
CN103192047A (zh) * 2013-02-21 2013-07-10 内蒙古包钢钢联股份有限公司 新型连铸机结晶器冷却水自动控制系统及其控制方法
CN106200593A (zh) * 2016-08-29 2016-12-07 中国重型机械研究院股份公司 一种智能化连铸过程控制系统及其控制方法
CN109807298A (zh) * 2019-03-27 2019-05-28 芜湖云邦铜业有限公司 一种铜杆上引连铸冷却水流速自动控制方法
CN110576160A (zh) * 2019-09-26 2019-12-17 中冶赛迪工程技术股份有限公司 一种连铸机结晶器水的控制系统及方法
CN114918395A (zh) * 2022-04-22 2022-08-19 首钢集团有限公司 一种结晶器冷却水流量的设定方法
CN114918395B (zh) * 2022-04-22 2024-04-16 首钢集团有限公司 一种结晶器冷却水流量的设定方法
CN114833317A (zh) * 2022-05-06 2022-08-02 包头钢铁（集团）有限责任公司 一种提高宽板铸机结晶器铜板使用寿命的方法
CN114833317B (zh) * 2022-05-06 2023-06-20 包头钢铁（集团）有限责任公司 一种提高宽板铸机结晶器铜板使用寿命的方法

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Publication number Publication date
EP1103323A3 (fr) 2001-09-19

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