EP0320575A2 - Procédé de laisser ouvert le conduit pour l'orifice de busettes à tiroir en installations de coulée continue - Google Patents

Procédé de laisser ouvert le conduit pour l'orifice de busettes à tiroir en installations de coulée continue Download PDF

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Publication number
EP0320575A2
EP0320575A2 EP88114741A EP88114741A EP0320575A2 EP 0320575 A2 EP0320575 A2 EP 0320575A2 EP 88114741 A EP88114741 A EP 88114741A EP 88114741 A EP88114741 A EP 88114741A EP 0320575 A2 EP0320575 A2 EP 0320575A2
Authority
EP
European Patent Office
Prior art keywords
slide plate
slide
opening stroke
throttle position
throttle
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
EP88114741A
Other languages
German (de)
English (en)
Other versions
EP0320575B1 (fr
EP0320575A3 (en
Inventor
Walter Vetterli
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 AT88114741T priority Critical patent/ATE89772T1/de
Publication of EP0320575A2 publication Critical patent/EP0320575A2/fr
Publication of EP0320575A3 publication Critical patent/EP0320575A3/de
Application granted granted Critical
Publication of EP0320575B1 publication Critical patent/EP0320575B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • 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

Definitions

  • the invention relates to a method for keeping the melt flow channel free in the controlled pouring, in particular of steel melt, from an intermediate vessel via a slide closure into a continuous casting mold, in which a controlled target fill level is set by regulating movements of the slide closure, which widening in the event of deposits in the flow channel Throttle position is maintained.
  • the object of the present invention is to eliminate the constricting deposits in the flow channel of the slide closure with simple measures which take place in the area of the desired fill level control with the strand quality remaining the same.
  • the object is achieved according to the invention essentially in that the slide plate is moved from a throttle position to a new throttle position in a rapid opening stroke with a speed that is matched to the regulation of the desired fill level with regard to the amount of additional melt.
  • the slide plate When carrying out the opening stroke, it has proven to be particularly expedient that the slide plate is brought from a throttle position into a throttle position opposite the flow passage of the slide closure.
  • a flow pressure that has an errosive effect on the deposits, which favors the washing out of the flow channel arises on the slide plate as a result of the mirror-image changing deflection flow of the melt.
  • uniform wear of the plate material at the throttle edges of the melt flow channel can be achieved, which in turn increases the service life of the plates. With different wear patterns in the opposite throttle positions result in different positions of the slide plate with the same flow rate.
  • the coordination of the speed of the opening stroke of the slide plate to the regulation of the nominal level is the function of two factors: on the one hand, the pouring impulse generated by a persistent, full opening of the slide plate should be able to wash out existing deposits, possibly carry them away, and on the other hand, to carry them away with the Do not raise the melt quantity conveyed by the impulse to raise the bath level in the mold beyond the control range of the nominal level.
  • the operating conditions, in particular of the melt to be cast are carried out according to the invention in such a way that the slide plate is opened periodically, namely at predetermined regular time intervals which are adapted to the lubrication behavior of the melt and, for example, when casting conventional melt, depending on the mold cross section, between one and ten minutes can be measured.
  • the opening stroke of the slide plate can take place in a set maximum degree of opening within the target level control. In this case, the initiation of the opening stroke is solely linked to the degree of narrowing of the melt flow channel.
  • the method according to the invention provides that in the throttle positions, at least before the opening stroke, the throttle movements of the slide plate are superimposed by an oscillation. This makes it easier to clear the flow channel of the slide closure. It is further proposed that purge gas is introduced into the spout (inlet sleeve) and / or the pouring tube at least during the opening stroke, which makes the flow impulse in the melt flow caused by the opening stroke more effective, especially with regard to washing out deposits in the pouring spout and pouring tube.
  • 1 means an intermediate vessel containing metallic melt, which has a slide closure 3 in the throttle position on the spout 2. This regulates the flow rate of the flow channel 7 flowing from the vessel 1 through the common flow channel 7 formed by the flow openings of the stationary top plate 4, the adjustable slide plate 5 and the in turn stationary bottom plate 6, and through the pouring tube 8 to the mold 9.
  • the slide plate 5 is mechanically coupled to an actuator 10, the respective operating position of which is identified by a position meter 11.
  • the mold 9, into which the pouring tube 8 projects with the free end, has a nominal fill level 12 which is set for normal operation and which is controlled by a transmitter (radiator) 13 and a measured value receiver 14.
  • the withdrawal of the strand 15 solidified on the outside in the mold 9 takes place by means of a take-off drive 17 having drive rollers 16, to which a controller 18 and a take-off speed meter 19 coupled with this are assigned.
  • the latter also gives its data to a processor 20, which also receives and processes the data from the position meter 11 and the measured value receiver 14. Resulting control commands are sent by a controller 21 integrated in the processor 20 to the actuator 10 of the slide closure 3 and to the trigger controller 18.
  • the withdrawal speed of the strand is defined as a constant, which means that the desired fill level 12 in the mold 9 is regulated solely from the inflow side by means of the slide closure 3.
  • the slide plate 5 assumes a throttle position which, by opening and closing, allows more or less melt to be supplied in order to maintain the balance between the amount of melt flowing in per unit time and the strand 15 emerging from the mold 9.
  • the melt flow is redirected twice when the slide closure 3 is throttled, namely on the inlet and outlet side of the slide plate 5.
  • the slide plate 5 continues to close in the event of erosion wear and an increasing cross section of the flow channel 7, and on the other hand continues to open as soon as the cross section is narrowed by deposits 22.
  • Such cross-sectional constrictions in particular result in considerable casting problems, since the opening of the slide closure 3 ends when the full degree of opening is reached, that is to say in the case of plates 4 to 6 which are congruent. so that the quantity of melt required by the control 13, 14 of the desired fill level 12 per unit of time can no longer be produced via the narrowed flow channel 7.
  • the processor 20 initiates a process sequence which automatically adjusts the slide plate 5 from the in Figure 2 with deposits 22 throttle position brought into a new, opposite throttle position (Figure 3), in which the control of the target level 12 continues.
  • the slide plate 5 adjusted in this way passes with its throughflow opening the full opening position in which the throughflow openings of all three plates 4 to 6 are coaxial, so that the fully effective pouring stream rinses away the deposits 22 which are freely suspended in the throughflow channel 7 (FIG. 4) or washes away during the , deflection of the pouring jet which changes in mirror image when entering the new throttle position.
  • the opening stroke of the slide plate 5 into the new throttle position according to FIG. 3, which is carried out in one go, without stopping, takes place at a speed which ensures that the short-term increased melt supply into the mold 9 can be easily compensated for by the desired fill level control.
  • the slide plate actuator 10 and its position meter 11 are designed for both throttle positions. Nevertheless, there is also the possibility of coping with an opening stroke with throttle operation that only works on one side, by opening the slide plate 5 without stopping and immediately returning it to an initially assumed throttle position.
  • the opening stroke can be repeated at regular intervals or it comes into play when the position meter 11 reports a defined maximum degree of opening of the slide closure 3, that is to say considerable deposits 22 are already present in the flow channel 7.
  • known flushing gas feeds can be provided on the spout (2) and on the pouring tube (8).
  • the control movements of the slide plate (5) are temporarily superimposed by an oscillation which is also known per se.
  • the invention applies to both two and three-plate gate valves on rotary, swivel or linear systems. Furthermore, the invention applies to continuous casting plants with a combined inflow and outflow control and for slide closures which are arranged on pans with which the intermediate vessel is filled depending on the bath level in the vessel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP88114741A 1987-12-12 1988-09-09 Procédé de laisser ouvert le conduit pour l'orifice de busettes à tiroir en installations de coulée continue Expired - Lifetime EP0320575B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88114741T ATE89772T1 (de) 1987-12-12 1988-09-09 Verfahren zum freihalten des durchflusskanals von schiebeverschluessen an stranggiessanlagen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3742215 1987-12-12
DE19873742215 DE3742215A1 (de) 1987-12-12 1987-12-12 Verfahren zum freihalten des durchflusskanals von schiebeverschluessen an stranggiessanlagen

Publications (3)

Publication Number Publication Date
EP0320575A2 true EP0320575A2 (fr) 1989-06-21
EP0320575A3 EP0320575A3 (en) 1990-06-13
EP0320575B1 EP0320575B1 (fr) 1993-05-26

Family

ID=6342488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114741A Expired - Lifetime EP0320575B1 (fr) 1987-12-12 1988-09-09 Procédé de laisser ouvert le conduit pour l'orifice de busettes à tiroir en installations de coulée continue

Country Status (18)

Country Link
US (1) US4890665A (fr)
EP (1) EP0320575B1 (fr)
JP (1) JP2756683B2 (fr)
KR (1) KR960013885B1 (fr)
CN (1) CN1013081B (fr)
AR (1) AR240268A1 (fr)
AT (1) ATE89772T1 (fr)
BR (1) BR8806518A (fr)
CA (1) CA1322448C (fr)
CZ (1) CZ284252B6 (fr)
DE (2) DE3742215A1 (fr)
ES (1) ES2042668T3 (fr)
FI (1) FI85958C (fr)
MX (1) MX170737B (fr)
PL (1) PL163968B1 (fr)
RU (1) RU2038887C1 (fr)
SK (1) SK281170B6 (fr)
ZA (1) ZA888711B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0356552B1 (fr) * 1988-08-31 1992-04-08 Metacon AG Procédé de réglage de fermetures à tiroir, en particulier dans les installations de coulée continue
WO1995017872A1 (fr) * 1993-12-28 1995-07-06 Daito Electric Machine Industry Company Limited Appareil de massage a vibrations
GB9501263D0 (en) * 1995-01-23 1995-03-15 Snowden Pte Ltd A door assembly
GB2311947A (en) * 1996-03-12 1997-10-15 Flogates Ltd Sliding gate valve
DE19807114B4 (de) * 1998-02-20 2006-11-23 Sms Demag Ag Verfahren zur Qualitätsüberwachung des Gießvorganges einer Stranggießanlage
JP2005508756A (ja) * 2001-11-13 2005-04-07 ベスビウス クルーシブル カンパニー 直線スライドゲート用の複数穴・複数エッジ形制御プレート
US9964498B2 (en) * 2015-09-11 2018-05-08 Baylor University Electromagnetic steam energy/quality, flow, and fluid property sensor and method
EP3276095B1 (fr) * 2016-07-26 2020-04-22 Viega Technology GmbH & Co. KG Dispositif destiné à réduire le flux de rinçage provenant de réservoir de chasse d'eau sanitaire, vanne de vidange et réservoir de chasse d'eau sanitaire comprenant un tel dispositif

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926863A1 (de) * 1979-07-03 1981-01-15 Zimmermann & Jansen Gmbh Verfahren zur steuerung des ausgussschiebers eines gefaesses
DE3344127A1 (de) * 1982-06-09 1985-06-20 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren und vorrichtung zum fuellen einer stranggiesskokille beim angiessen eines stranges
DE3422901C2 (de) * 1984-06-20 1987-02-05 Metacon AG, Zürich Verfahren zum Vergießen einer metallischen Schmelze
DE3608503A1 (de) * 1986-03-14 1987-09-17 Stopinc Ag Verfahren zum automatischen angiessen eines stranges von stranggiessanlagen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49139325U (fr) * 1973-04-02 1974-11-30
CH653269A5 (de) * 1981-06-01 1985-12-31 Metacon Ag Verfahren zum verhindern des einfrierens von metallischen schmelzen im auslaufkanal eines giessgefaesses.
JPS603952A (ja) * 1983-06-20 1985-01-10 Sumitomo Metal Ind Ltd 溶融金属の注入方法
US4730660A (en) * 1984-09-05 1988-03-15 Metacon Aktiengesellschaft Process for casting molten metal into several strands
JPS61212460A (ja) * 1985-03-19 1986-09-20 Sumitomo Metal Ind Ltd 連続鋳造設備の溶鋼注流路詰り防止装置
DE3509932A1 (de) * 1985-03-19 1986-10-02 Metacon AG, Zürich Verfahren zum anfahren einer stranggiessanlage
JPS61169156U (fr) * 1985-04-03 1986-10-20

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926863A1 (de) * 1979-07-03 1981-01-15 Zimmermann & Jansen Gmbh Verfahren zur steuerung des ausgussschiebers eines gefaesses
DE3344127A1 (de) * 1982-06-09 1985-06-20 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren und vorrichtung zum fuellen einer stranggiesskokille beim angiessen eines stranges
DE3422901C2 (de) * 1984-06-20 1987-02-05 Metacon AG, Zürich Verfahren zum Vergießen einer metallischen Schmelze
DE3608503A1 (de) * 1986-03-14 1987-09-17 Stopinc Ag Verfahren zum automatischen angiessen eines stranges von stranggiessanlagen

Also Published As

Publication number Publication date
DE3742215C2 (fr) 1991-07-04
AR240268A1 (es) 1990-03-30
CN1034156A (zh) 1989-07-26
MX170737B (es) 1993-09-10
CN1013081B (zh) 1991-07-10
RU2038887C1 (ru) 1995-07-09
DE3881356D1 (de) 1993-07-01
FI85958C (fi) 1992-06-25
CS770088A3 (en) 1992-12-16
FI85958B (fi) 1992-03-13
PL276316A1 (en) 1989-08-21
ATE89772T1 (de) 1993-06-15
FI885707A0 (fi) 1988-12-09
DE3742215A1 (de) 1989-06-22
EP0320575B1 (fr) 1993-05-26
SK281170B6 (sk) 2000-12-11
EP0320575A3 (en) 1990-06-13
JPH026041A (ja) 1990-01-10
FI885707A (fi) 1989-06-13
US4890665A (en) 1990-01-02
CZ284252B6 (cs) 1998-10-14
ZA888711B (en) 1990-05-30
KR890009503A (ko) 1989-08-02
PL163968B1 (pl) 1994-06-30
BR8806518A (pt) 1989-08-22
CA1322448C (fr) 1993-09-28
ES2042668T3 (es) 1993-12-16
JP2756683B2 (ja) 1998-05-25
KR960013885B1 (ko) 1996-10-10

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