EP3027331B1 - Installation de laminage de coulée continue et procédé de fabrication de brames - Google Patents
Installation de laminage de coulée continue et procédé de fabrication de brames Download PDFInfo
- Publication number
- EP3027331B1 EP3027331B1 EP14747587.5A EP14747587A EP3027331B1 EP 3027331 B1 EP3027331 B1 EP 3027331B1 EP 14747587 A EP14747587 A EP 14747587A EP 3027331 B1 EP3027331 B1 EP 3027331B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- strip
- rolling mill
- slabs
- steckel
- 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.)
- Active
Links
- 238000005266 casting Methods 0.000 title claims description 83
- 238000005096 rolling process Methods 0.000 title claims description 43
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000004804 winding Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000000265 homogenisation Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000009499 grossing Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
Definitions
- the invention relates to a casting and rolling plant with a strip casting machine and a method for producing pre-strip. Specifically, the invention relates to small caster rolling mills, so-called micromill plants, for the production of flat steel with an annual production between 350,000 and 700,000 t of carbon steel.
- the plant concept according to the invention is characterized by low investment and production costs, rapid project implementation with a short return on investment and a compact plant layout.
- the plant according to the invention is particularly suitable for steel producers in regions where so far no flat steel production took place and where a specialization to regional requirements should take place.
- the WO 2010/066412 A1 a casting mill with a strip casting machine.
- the strip casting machine follows in the casting direction a roller table with a temperature homogenization zone, a temperature setting device, a mass flow control, a second temperature setting device and a rolling stand, a pair of scissors and a reel.
- a disadvantage of this continuous in-line rolling device that the slab in the rolling stand only one stitch and thus only a reduction in thickness can be subjected before being wound up as a pre-strip on the reel.
- EP 1 827 720 B1 An alternative plant concept with a strip casting machine is from the European patent specification EP 1 827 720 B1 known. Specifically, this patent discloses a caster in which follow after the strip casting a temperature homogenizer, a roughing stand, a pair of scissors and a first take-up device in the casting direction. To further reduce the thickness downstream of a Steckel mill is provided in the casting direction and the Steckel rolling mill below a cooling section and finally a coiler. To operate the Steckel mill, it is necessary that the coils produced by means of the first coiler be implemented in a first winding furnace located upstream of the Steckel mill before the metal strip of the coil can first pass through the Steckel mill for a first pass.
- German patent application DE 10 2004 057 427 A1 discloses a caster with an arcuate continuous casting machine and downstream in the casting machine unit for combined straightening and conveying the casting strand.
- the international patent application WO 2011/158091 A2 and the European patent application EP 0 449 004 A2 each discloses a casting mill with a casting machine for casting a cast strand.
- the casting machine is a pair of scissors arranged for dividing the casting strand in slabs of predetermined length.
- the pair of scissors is a temperature-homogenizing device and this downstream of a Steckel mill for rolling the slabs to metal strips of predetermined thickness.
- the invention has the object, a cast rolling and a method for producing slabs using a strip casting machine such that the casting mill can be made more compact and that in the manufacturing process time and energy can be saved.
- the casting machine is designed as a strip casting machine with a circulating cooled conveyor belt for casting the casting strand with a casting thickness between 10 and 20 mm; that between the output of the strip casting machine and the temperature homogenizing means a Multirollenglätt noticed is arranged; and that between the exit of the temperature homogenizer and the Steckel mill a roller table is provided for feeding the slabs directly into the Steckel mill.
- Slabs are produced by dividing the casting strand; Pre-bands are produced by reducing the thickness of the slabs with at least one stitch.
- the claimed plant concept has the advantage that behind the temperature homogenizing device, the slabs can be introduced directly into the Steckel mill and subjected to a first pass there without previously requiring a winding of the slabs. A roughing stand is not provided and not required.
- the system can be made more compact and investment costs can be saved.
- this system concept is very energy efficient because no significant temperature losses occur between the temperature homogenizer and the Steckel mill, such as by interim storage or wrapping of coils, as is known in the prior art.
- Both Steckel each have only one winding device and are each only designed to wind the pre-strip after a pass of the Steckel mill and for dispensing the pre-strip to the Steckel mill for the following stitch.
- the upstream wind-up furnace is not designed to receive the slabs, e.g. from the temperature homogenizer. It has for this purpose no second winding device or no second station, which would allow the winding of the slabs from the temperature-homogenizing device and which would further allow the conversion of the coil thus produced for feeding the slabs to the Steckel mill.
- the shears for dividing the cast strand cast by the casting machine into slabs of predetermined length may be disposed between the multi-roll smoother and the entrance of the temperature homogenizer or between the exit of the temperature homogenizer and the Steckel mill.
- an induction heating device is preferably arranged for heating the slabs to a temperature suitable for the Steckel rollers.
- the method provides that the casting strand with a casting belt speed of 5 to 25 m / min. is poured.
- the method according to the invention and the associated cast roll plant according to the invention are in particular provided for producing carbon steel pre-strips.
- FIG. 1 It shows the casting roll plant 100 according to the invention. It comprises, as seen in the casting direction R, a melt delivery system 105, a strip casting machine 110, a multi-roll smoothener 120, a shears 130, a temperature homogenizing furnace 140, optionally an induction heater 150, a roller table 155, a Steckel mill 160, a Cooling section 170 and, for example, a coiler 180.
- a melt delivery system 105 a melt delivery system 105
- strip casting machine 110 a strip casting machine 110
- a shears 130 e.g., a temperature homogenizing furnace 140
- optionally an induction heater 150 e.g., a roller table 155
- a Steckel mill 160 e.g., a Steckel mill 160
- Cooling section 170 e.g., a Cooling section 170
- the individual components of the casting rolling mill will be described in detail at least partially.
- the melt delivery system 105 consists essentially of a refractory lined or separately dumped position Heatable melt container, which the liquid metal, ie the melt, via a discharge nozzle using the force of gravity on the conveyor belt 118, see FIG. 2 guiding strip caster 110.
- a level measuring system in FIG. 1 not shown, ensures a constant melt level in the melt container and thus a constant flow of melt on the strip casting machine 110.
- the distribution of the melt over the casting width via flow guide elements (in FIG. 1 not shown) in the melt delivery system 105 or via arranged guide systems. These guide systems can conduct the melt with the aid of electromagnetic traveling fields or by the use of gas, which is passed through nozzles on the melt surface. The combination of several melt container with each other is possible.
- the flow guidance elements also extend beyond the melt delivery system into the region of the circulating conveyor belt 118 of the strip casting machine 110.
- the strip casting machine 110 consists, as in FIG. 2
- the transport belt 118 is preferably made of steel with a thickness of less than 3 mm. In the FIG. 2 shown smaller of the three rollers 115 ensures a uniform tension of the band.
- the lateral boundary of the strip casting plant is occupied by two horizontally encircling water - cooled dam block chains, in FIG. 2 Not shown.
- the conveyor belt is from below via spray nozzles, in FIG. 2 also not shown, cooled in the melt feed area with specific watering densities between 80 and 300 l / s / m 2 . Until the belt outlet the Wasserbeetzschungsêtn be returned to values between 10 and 100 liters / sec / m 2 .
- the belt cooling is operated with preferably> 100 m / bar negative pressure.
- the outside prevailing air pressure thus ensures the flat pressing of the metal strip on the support means between the two large rollers 115th
- the strip casting machine 110 according to the invention has a strip contact length of less than 7.5 m, the strip contact length being measured as the distance between the centers of the two large rolls 115.
- the casting speeds realized with the strip casting machine 110 are between 5 and 25 m / min, depending on the casting thickness.
- the strip casting machine 110 is the Multirollenglätt issued 120 downstream in the casting direction R.
- the multi-roll smoothing device 120 the cast strand is guided to improve its flatness with at least three pairs of rolls 124.
- the pairs of rollers are preferably driven individually. A reduction in the thickness of the casting strand generally does not take place in the multi-roll smoothing device.
- the example subsequent scissors 130 cuts the cast strand in slabs of predetermined length and decouples the previous casting process from a subsequent rolling process.
- the temperature homogenizing device 140 is arranged, which is typically designed as a tunnel furnace.
- the inductive heating downstream of the furnace which is provided only as an option, optionally provides for an increase in the temperature of the slabs and / or for a temperature compensation over the length of the slab before the slabs enter the downstream Steckel mill (160).
- the Steckel mill produces the desired final thickness with three, five, seven or more passes.
- the Steckel mill (160) is followed, as already mentioned above, in the casting direction by the cooling section 170 and the reel 180 for winding the pre-strips into a collar 250.
- the casting roll plant according to the invention thus formed has the advantage that the slabs, after passing through the temperature homogenizing device 140, can be fed directly into the Steckel rolling mill 160 without any loss of time or energy or without heat loss Perform a first pass without having to be wound up first.
- the induction heater 150 and / or the scissors 130 are arranged between the temperature homogenizer 140 and the Steckel mill 160.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Claims (15)
- Installation de coulée continue (100) comprenant :une machine de coulée pour la coulée d'une barre de coulée (200) ;une cisaille (130) pour découper la barre de coulée en brames (210) possédant une longueur prédéfinie ;un mécanisme d'homogénéisation de la température (140) ; et un laminoir Steckel (160) pour le laminage des brames afin d'obtenir des ébauches (220) possédant une épaisseur prédéfinie ;caractériséeen ce que la machine de coulée est réalisée sous la forme d'une machine de coulée en bande (110) comprenant une bande transporteuse (118) périphérique refroidie pour la coulée de la barre de coulée (200) avec une épaisseur de coulée entre 10 et 20 mm ;en ce qu'un mécanisme de lissage à rouleaux multiples (120) est disposé entre la sortie de la machine de coulée en bande (110) et le mécanisme d'homogénéisation de la température (140) ; eten ce qu'on prévoit une table à rouleaux entre la sortie du mécanisme d'homogénéisation de la température et le laminoir Steckel pour acheminer les brames directement dans le laminoir Steckel (160).
- Installation de coulée continue (100) selon la revendication 1, caractérisée en ce que les fours de bobinage (162, 164) attribués en amont et en aval au laminoir Steckel (160) ne présentent respectivement qu'un seul mécanisme de bobinage et ne sont réalisés respectivement que pour l'enroulement de l'ébauche à partir du laminoir Steckel (160) et pour la décharge de l'ébauche au laminoir Steckel.
- Installation de coulée continue (100) selon l'une quelconque des revendications précédentes, caractérisée en ce qu'un mécanisme de chauffage par induction (150) est disposé entre la sortie du mécanisme d'homogénéisation de la température (140) et le laminoir Steckel (160).
- Installation de coulée continue (100) selon l'une quelconque des revendications précédentes, caractérisée en ce que le mécanisme de lissage à rouleaux multiples (120) présente au moins trois paires de rouleaux (124) au moins une desdites paires de rouleaux étant entraînée.
- Installation de coulée continue (100) selon l'une quelconque des revendications précédentes, caractérisée par un tronçon de refroidissement (170) en aval du laminoir Steckel.
- Installation de coulée continue (100) selon la revendication 1, caractérisée par un mécanisme de bobinage (180) en aval du tronçon de refroidissement (170).
- Installation de coulée continue (100) selon l'une quelconque des revendications précédentes, caractérisée en ce que la machine de coulée continue (110) présente une longueur de mise en contact avec la bande inférieure à 7,5 m.
- Installation de coulée continue (100) selon l'une quelconque des revendications précédentes, caractérisée en ce que la cisaille (130) pour la découpe de la barre de coulée en brames possédant une longueur prédéfinie est disposée entre le mécanisme de lissage à rouleaux multiples (120) et l'entrée du mécanisme d'homogénéisation de la température (140) ou entre la sortie du mécanisme d'homogénéisation de la température (140) et le laminoir Steckel (160).
- Procédé pour la fabrication de brames, comprenant les étapes suivantes dans lesquelles :on fabrique une barre de coulée (200) ;on homogénéise la température de la barre de coulée (200) ;on découpe la barre de coulée avant ou après l'homogénéisation, pour obtenir des brames ;après l'homogénéisation de la température : on introduit les brames directement dans un laminoir Steckel (160) pour les y soumettre à une première coulée, avant de les acheminer pour la première fois dans un four de bobinage du laminoir Steckel ; eton réduit l'épaisseur des brames dans le laminoir Steckel avec au moins trois coulées jusqu'à une épaisseur désirée pour obtenir une ébauche (220) ;caractérisé en ce quela fabrication de la barre de coulée (200) a lieu via une coulée en bande, la barre de coulée (200) étant coulée avec une épaisseur de coulée entre 10 et 20 mm ; eten ce que la barre de coulée (200) est lissée avant d'homogénéiser sa température.
- Procédé selon la revendication 9, caractérisé en ce que la vitesse de coulée de la barre de coulée se situe entre 5 et 25 m/minute.
- Procédé selon la revendication 9 ou 10, caractérisé en ce qu'on soumet les brames, après l'homogénéisation de la température, mais avant leur entrée dans le laminoir Steckel (160) à un nouveau réchauffement, de préférence par induction.
- Procédé selon l'une quelconque des revendications 9 à 11, caractérisé en ce qu'on découpe la barre de coulée, avant son entrée dans le laminoir Steckel, en brames possédant une longueur prédéterminée.
- Procédé selon l'une quelconque des revendications 9 à 12, caractérisé en ce que la barre de coulée (200) est constituée d'acier au carbone.
- Procédé selon l'une quelconque des revendications 9 à 13, caractérisé en ce qu'on refroidit les ébauches après leur sortie du laminoir Steckel.
- Procédé selon la revendication 14, caractérisé en ce qu'on enroule les ébauches, après les avoir refroidies, pour obtenir une bobine (250).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310214940 DE102013214940A1 (de) | 2013-07-30 | 2013-07-30 | Gießwalzanlage und Verfahren zum Herstellen von Brammen |
PCT/EP2014/066318 WO2015014864A1 (fr) | 2013-07-30 | 2014-07-29 | Installation de laminage de coulée continue et procédé de fabrication de brames |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3027331A1 EP3027331A1 (fr) | 2016-06-08 |
EP3027331B1 true EP3027331B1 (fr) | 2017-03-01 |
Family
ID=51266307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14747587.5A Active EP3027331B1 (fr) | 2013-07-30 | 2014-07-29 | Installation de laminage de coulée continue et procédé de fabrication de brames |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3027331B1 (fr) |
CN (1) | CN105473247A (fr) |
DE (1) | DE102013214940A1 (fr) |
WO (1) | WO2015014864A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017221969A1 (de) | 2017-12-05 | 2019-06-06 | Sms Group Gmbh | Verfahren und Vorrichtung zur Herstellung eines bandförmigen Verbundmaterials |
EP3974072B1 (fr) * | 2020-09-24 | 2023-07-19 | Primetals Technologies Austria GmbH | Installation combinée de coulée et de laminage et procédé de fonctionnement de l'installation combinée de coulée et de laminage |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4009860C2 (de) * | 1990-03-28 | 1999-11-18 | Schloemann Siemag Ag | Verfahren und Anlage zur Herstellung von warmgewalztem Stahlband, insbesondere für Edelstähle, aus bandförmig stranggegossenem Vormaterial |
DE19758108C1 (de) * | 1997-12-17 | 1999-01-14 | Mannesmann Ag | Produktionsverfahren und -anlage zur endlosen Erzeugung von warmgewalzten dünnen Flachprodukten |
DE102004057427A1 (de) * | 2004-11-27 | 2006-06-01 | Sms Demag Ag | Vorrichtung und Verfahren zum Stranggießen |
DE102004062636B4 (de) * | 2004-12-21 | 2007-05-24 | Salzgitter Flachstahl Gmbh | Einrichtung zum horizontalen Bandgießen von Stahl |
DE102005052774A1 (de) | 2004-12-21 | 2006-06-29 | Salzgitter Flachstahl Gmbh | Verfahren zum Erzeugen von Warmbändern aus Leichtbaustahl |
DE102007057278A1 (de) * | 2007-08-04 | 2009-02-05 | Sms Demag Ag | Verfahren und Vorrichtung zur Vergleichmäßigung des Wärmeübergangs eines Gussprodukts während seiner Erstattung auf dem Metalltransportband einer horizontalen Bandgießanlage |
US20120024434A1 (en) | 2008-12-09 | 2012-02-02 | Rolf Franz | Method for producing strips of metal, and production line for performing the method |
DE102010050647A1 (de) | 2009-11-21 | 2011-05-26 | Sms Siemag Aktiengesellschaft | Anlage und Verfahren zum Gießen und Walzen von Metall |
IT1405453B1 (it) * | 2010-06-14 | 2014-01-10 | Danieli Off Mecc | Procedimento di laminazione per prodotti piani e relativa linea di laminazione |
-
2013
- 2013-07-30 DE DE201310214940 patent/DE102013214940A1/de not_active Withdrawn
-
2014
- 2014-07-29 WO PCT/EP2014/066318 patent/WO2015014864A1/fr active Application Filing
- 2014-07-29 EP EP14747587.5A patent/EP3027331B1/fr active Active
- 2014-07-29 CN CN201480043513.9A patent/CN105473247A/zh active Pending
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN105473247A (zh) | 2016-04-06 |
EP3027331A1 (fr) | 2016-06-08 |
DE102013214940A1 (de) | 2015-02-05 |
WO2015014864A1 (fr) | 2015-02-05 |
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