EP1034057B1 - Procede de demarrage pour la coulee d'une bande metallique aux dimensions voisines des dimensions finales - Google Patents

Procede de demarrage pour la coulee d'une bande metallique aux dimensions voisines des dimensions finales Download PDF

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Publication number
EP1034057B1
EP1034057B1 EP98954188A EP98954188A EP1034057B1 EP 1034057 B1 EP1034057 B1 EP 1034057B1 EP 98954188 A EP98954188 A EP 98954188A EP 98954188 A EP98954188 A EP 98954188A EP 1034057 B1 EP1034057 B1 EP 1034057B1
Authority
EP
European Patent Office
Prior art keywords
melt
casting
siphon
chamber
casting nozzle
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 - Lifetime
Application number
EP98954188A
Other languages
German (de)
English (en)
Other versions
EP1034057A1 (fr
Inventor
Ulrich Urlau
Joachim Kroos
Reinhard Scholz
Karl-Heinz Spitzer
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.)
Salzgitter AG
SMS Siemag AG
Original Assignee
Salzgitter AG
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 Salzgitter AG, SMS Demag AG filed Critical Salzgitter AG
Publication of EP1034057A1 publication Critical patent/EP1034057A1/fr
Application granted granted Critical
Publication of EP1034057B1 publication Critical patent/EP1034057B1/fr
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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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt

Definitions

  • the invention relates to a method for casting a near-net-shape Metal strip in which the melt, in particular steel, over a Melt supply vessel in a pouring chamber of a siphon-like vessel and this pouring chamber by means of a main chamber pressurized with negative pressure a pouring nozzle is guided on a cooled conveyor belt.
  • DE 43 44 953 describes a method including the device required for this known for casting a metal tape close to the final dimension, in which in the Pouring nozzle near the mouth, a shut-off element is provided with which the The pouring nozzle can be shut off and opened in the form of a slit when poured on.
  • shut-off elements are extremely high loads exposed and therefore maintenance-intensive. Furthermore is a qualified one Operators required to program the correct slit-shaped Drive opening in the pouring channel.
  • the invention has set itself the goal of a method to cast on a metal tape close to the final dimension, the a safe start of the Belt caster enables.
  • the pouring chamber and in a siphon-like vessel so that the main chamber is filled until the liquid melt over the Siphon apex flows into the pouring nozzle.
  • the melt flows out over the Channel bottom of the pouring nozzle is the melt flow in the way through the Pouring nozzle led that their cross section closes like a plug.
  • means can be provided that flow out of the area Deflect the melt stream in the form of a ski jump so that it is in the pouring channel a graft forms.
  • the redirection can also be done by turning on an outside the casting nozzle arranged magnets are caused.
  • the plug is connected to the main chamber when moving off Vacuum pump generated negative pressure and kept flowing by the Melt enlarged, with a small part of the melt on the endless belt is delivered.
  • the negative pressure becomes so set that the main chamber is sufficiently supplied with melt and the Level in the pouring chamber slightly above the height of the cast tape is held.
  • the Vacuum device can be switched off, but only if there is any Leakage is used. The entire regulation of the melt feed is directly via the level measurement in the pouring chamber or the Level measurement of the finished belt carried out
  • Figures 1.1 to 1.3 show a melt supply vessel 11, at the bottom of a Immersion spout 12 is connected, its inflow opening through a plug 13 is lockable.
  • the immersion spout 12 projects into a siphon-like vessel 21, which is a Pouring chamber 22 and a main chamber 24 separated by a partition 23 has, to which a pouring nozzle 25 is connected.
  • the casting nozzle 25 is followed by a belt device with an endless belt 31, which has a driven roller 32 and a deflection drum 33.
  • the main chamber 24 is connected to a vacuum pump 41, which is also a Pressure meter 73 is connected to a processor 71.
  • the processor 71 is in addition with a signal transmitter for the level of the band 72 and one Actuator 74 connected to control the plug 13.
  • FIG. 1 shows how the melt S from the melt supply vessel 11 in the pouring chamber 22 and simultaneously flows into the main chamber 24 and the Siphon crown K overflows.
  • the Melt stream on a jump hill-shaped elevation 51 and is thereby in the Distracted that a plug is formed within the pouring channel 26.
  • a vacuum is generated which causes the plug enlarged and gradually fills the pouring channel 26.
  • the further increase in Vacuum is, as shown in Figure 1.3, the main chamber 24 largely Melt S filled and the melt level lowered in the pouring chamber 22. at The belt height and level are reached in a steady state Pump 41 turned off.
  • Figures 2.1 to 2.3 show means for deflecting the melt flow in the Casting channel.
  • a jump hill-shaped elevation 51 is shown in FIG. 2.1 provided, which is designed in cross section as a semicircle with a radius r.
  • the part facing the melt is configured in radius R and the part facing the mouth is conical.
  • the means for forming a plug is outside the pouring channel 26 attached magnet 56.
  • FIGs 3.1 and 3.2 configurations are shown in which the Grafting is formed in the mouth area.
  • the are sketchy Pouring channel 26 and the channel underside 27 and the channel top 28 are shown have an embodiment in the mouth area 29 in which the channel top 28 has a distance H from the upper run 34 of the endless belt 31.
  • FIG. 3.1 shows how the melt stream S flows onto the upper run 34 strikes and rebounds from there and hits the forehead of the channel top 28 and thus forms a plug in the mouth area.
  • This extension 61 is form-fitting on the Channel top 28 attached. The first time the melt stream S hits, the Extension 61 deflect this around by the action of heat To be melted and thus the complete height H for the To release normal casting operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Claims (6)

  1. Procédé pour couler un feuillard métallique à proximité des dimensions finales, dans lequel la matière en fusion, en particulier de l'acier, est guidé par l'intermédiaire d'un récipient d'amenée de matière en fusion dans une chambre de coulée d'un récipient du type siphon et, de cette chambre de coulée, par l'intermédiaire d'une chambre principale alimentée en dépression, au moyen d'une buse de coulée sur une bande de transport refroidie,
    caractérisé par les étapes suivantes :
    a) la chambre de coulée et la chambre principale sont remplies jusqu'au sommet du siphon,
    b) avant le débordement de la matière en fusion au-dessus du sommet du siphon, le dispositif à dépression relié à la chambre principale est mis en service,
    c) après débordement de la matière en fusion au-dessus du sommet du siphon, le courant de matière en fusion est guidé à travers la buse de coulée de façon que sa section transversale se ferme à la manière d'un bouchon,
    d) de façon dépendant de la position du bouchon se trouvant dans la buse de coulée, la dépression est augmentée jusqu'à ce que, lorsque la matière en fusion s'écoule, il existe une liaison hydraulique entre l'entrée et la sortie, et est réglée de façon que la matière en fusion sort à l'embouchure de la buse de coulée,
    e) ensuite, la surface de la matière en fusion dans la chambre de coulée est maintenue à une valeur pour laquelle le courant de matière en fusion entrant est identique au courant de matière en fusion sortant.
  2. Procédé selon la revendication 1,
    caractérisé en ce que la direction d'écoulement du courant de matière en fusion est modifiée de façon spontanée en un endroit pouvant être prédéfini dans le canal de la buse de coulée pour former le bouchon.
  3. Procédé selon la revendication 2,
    caractérisé en ce que la modification est effectuée de façon mécanique.
  4. Procédé selon la revendication 2,
    caractérisé en ce que la modification est provoquée par un champ magnétique.
  5. Procédé selon la revendication 1,
    caractérisé en ce que la direction d'écoulement du courant de matière en fusion est changée après avoir quitté la buse de coulée de façon que le bouchon se forme dans la zone d'embouchure.
  6. Procédé selon une des revendications précitées,
    caractérisé en ce que, après achèvement de la coulée, le dispositif à dépression est coupé, et en ce que la hauteur du produit engendré est détectée et est utilisée, via des actionneurs, directement pour commander la quantité de matière en fusion quittant le récipient d'amenée de matière en fusion.
EP98954188A 1997-10-13 1998-09-11 Procede de demarrage pour la coulee d'une bande metallique aux dimensions voisines des dimensions finales Expired - Lifetime EP1034057B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19746728A DE19746728C1 (de) 1997-10-13 1997-10-13 Verfahren zum Angießen eines endabmessungsnahen Metallbandes
DE19746728 1997-10-13
PCT/DE1998/002763 WO1999019098A1 (fr) 1997-10-13 1998-09-11 Procede et tuyere de coulee pour la coulee d'une bande metallique aux dimensions voisines des dimensions finales

Publications (2)

Publication Number Publication Date
EP1034057A1 EP1034057A1 (fr) 2000-09-13
EP1034057B1 true EP1034057B1 (fr) 2003-09-03

Family

ID=7846323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98954188A Expired - Lifetime EP1034057B1 (fr) 1997-10-13 1998-09-11 Procede de demarrage pour la coulee d'une bande metallique aux dimensions voisines des dimensions finales

Country Status (7)

Country Link
US (1) US6357637B1 (fr)
EP (1) EP1034057B1 (fr)
JP (1) JP4348009B2 (fr)
AT (1) ATE248671T1 (fr)
AU (1) AU1143099A (fr)
DE (2) DE19746728C1 (fr)
WO (1) WO1999019098A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2308615A1 (fr) 2009-10-01 2011-04-13 Siemens Aktiengesellschaft Dispositif et procédé de coulée continue d'une bande de métal

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19918835A1 (de) * 1998-12-23 2000-07-06 Sms Demag Ag Verfahren zum Erfassen und Regeln der Füllstandshöhe des flüssigen Metalls in einer Kokille
US20060161102A1 (en) * 2005-01-18 2006-07-20 Newcomb Kenneth R Controlled failure balloon catheter assemblies
EP2132526B8 (fr) 2007-03-09 2015-07-08 SMS Siemag AG Dispositif de mesure d'épaisseur et procédé associé

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4649984A (en) * 1984-07-23 1987-03-17 Allied Corporation Method of and apparatus for casting metal strip employing a localized conditioning shoe
DE4039959C1 (fr) * 1990-12-14 1992-01-23 Wieland-Werke Ag, 7900 Ulm, De
DE4218587C1 (de) * 1991-09-27 1993-11-04 Wieland Werke Ag Verfahren und vorrichtung zur herstellung eines endabmessungsnahen metallbandes
DE4344953C2 (de) * 1993-12-27 1996-10-02 Mannesmann Ag Verfahren und Vorrichtung zum Angießen eines endabmessungsnahen Metallbandes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2308615A1 (fr) 2009-10-01 2011-04-13 Siemens Aktiengesellschaft Dispositif et procédé de coulée continue d'une bande de métal

Also Published As

Publication number Publication date
US6357637B1 (en) 2002-03-19
JP4348009B2 (ja) 2009-10-21
DE59809512D1 (de) 2003-10-09
WO1999019098A1 (fr) 1999-04-22
ATE248671T1 (de) 2003-09-15
JP2001519243A (ja) 2001-10-23
AU1143099A (en) 1999-05-03
DE19746728C1 (de) 1998-10-29
EP1034057A1 (fr) 2000-09-13

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