EP3027331A1 - Casting and rolling plant and method for producing slabs - Google Patents
Casting and rolling plant and method for producing slabsInfo
- Publication number
- EP3027331A1 EP3027331A1 EP14747587.5A EP14747587A EP3027331A1 EP 3027331 A1 EP3027331 A1 EP 3027331A1 EP 14747587 A EP14747587 A EP 14747587A EP 3027331 A1 EP3027331 A1 EP 3027331A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mill
- slabs
- casting
- steckel
- cast
- 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
Links
- 238000005266 casting Methods 0.000 title claims abstract description 69
- 238000005096 rolling process Methods 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000009499 grossing Methods 0.000 claims abstract description 7
- 238000000265 homogenisation Methods 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 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
- 238000005520 cutting process Methods 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000010345 tape casting Methods 0.000 claims 1
- 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 4
- 238000003860 storage Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 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
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.
- Cast rolling with strip casting machines are known in the art in principle. A comprehensive overview of the basics of strip casting, which is still valid today, can be found in the article by Spitzer et al., Development status in the DSC strip casting process, Stahl and Eisen 121 (2001) No. 5.
- DSC stands for Direct Strip Casting. From this article strip casting machines are known with a cooled conveyor belt and wherein the range from the steel task to hot rolling is housed, so that a protective gas atmosphere can be adjusted.
- the casting machine described there has a casting speed of up to 60 m / min. and produces a cast strand with a casting thickness of 8 to 15 mm.
- the strip casting machine downstream is a roller table and after the roller table follows a continuous in-line rolling. The rolling stand allows a reduction in thickness z. B. to 8 mm. After rolling, the steel strip is wound into a coil. Further state of the art casting toggle systems with strip casting found for. In DE 197 58 108 C1 or in WO 201 1/061262 A
- WO 2010/066412 A1 discloses a casting and rolling plant 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 is that the slab in the rolling mill can only be subjected to a single pass and thus only a reduction in thickness before it is wound up as a pre-strip on the reel.
- the invention has the object, a casting and a method for producing slabs with the help of a strip casting machine in such a way that the casting rolling mill can be made more compact and that in the manufacturing process time and energy can be saved.
- the object is achieved by the device technology by the claimed in claim 1 casting rolling.
- the word “G manstrang” is used for the cast product between the mold and the scissors
- the word “slab” for the cast product between the scissors and the Steckel mill
- the word “Vorband” for the cast product between the Steckel mill and the reel
- the claimed system design offers the advantage that the slabs can be introduced directly into the Steckel mill downstream of the temperature homogenizer, where they can be subjected to a first pass without the slabs being wound up beforehand Pre-scaffolding is not foreseen and is not required
- the plant can be made more compact and investment costs can be saved
- this system concept is very energy efficient, because no appreciable temperature losses occur between the temperature homogenizer and the Steckel mill, for example, by interim storage or wrapping of coils, as is known from 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 subsequent stitch.
- the winding furnace arranged upstream is not designed to receive the slabs, for example, from the temperature homogenizing device. He has for this purpose no second winding device or no second station, which would allow the winding of the slabs from the temperature homogenizer and which would further allow the implementation of the coils 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 above object of the invention is further achieved by the method claimed in claim 9.
- the advantages of this process solution correspond to the advantages mentioned above with respect to the claimed cast roll mill.
- 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.
- the invention is a total of 2 figures attached, wherein
- FIG. 1 shows the cast roll mill according to the invention
- FIG. 2 shows the strip casting machine according to the invention in detail.
- FIG. 1 shows the casting and rolling plant 100 according to the invention. It comprises a melt feeding system 105, a strip casting machine 10, a multi-roll smoothing device 120, a shear 130, a temperature homogenizing furnace 140, optionally an induction heating device 150, a roller table 155, a Steckel rolling mill 160, a cooling section 170 and, for example, a reeling device 180.
- 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 gravity on the conveyor belt 1 18, see Figure 2, the strip casting machine 1 10 performs.
- a fill level measuring system ensures a constant melt level in the melt container and thus a constant flow of melt to the strip casting machine 10.
- the distribution of the melt over the casting width takes place via flow guidance elements (not shown in FIG. 1) 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 1 18 of the strip casting machine 10.
- the strip casting machine 10 as shown in FIG. 2, consists essentially of the optionally textured or coated transport belt 1 18 revolving around three rollers.
- the transport belt 118 is preferably made of steel with a thickness of less than 3 mm.
- the smaller of the three rollers 1 15 shown in Figure 2 ensures a uniform tension of the tape.
- the laterally delimiting the strip caster take over two horizontally encircling water-cooled dam block chains, not shown in FIG.
- the conveyor belt is cooled from below via spray nozzles, also not shown in FIG. 2, in the melt feed region with specific water-loading densities between 80 and 300 l / s / m 2 .
- the spray-cooling container which is arranged almost airtight beneath the belt and comprises the rollers 15 and support grids, 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 1 15th
- the strip casting machine 1 10 according to the invention has a strip contact length of less than 7.5 m, wherein the strip contact length is measured as the distance between the centers of the two large rollers 1 15.
- the realized with the strip casting machine 1 10 casting speeds are, depending on the casting thickness between 5 and 25 m / min.
- the strip casting machine 1 10 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 homogenizer 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, are transported directly into the Steckel mill 160, substantially without loss of time and energy or 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310214940 DE102013214940A1 (en) | 2013-07-30 | 2013-07-30 | Cast rolling mill and method for producing slabs |
PCT/EP2014/066318 WO2015014864A1 (en) | 2013-07-30 | 2014-07-29 | Casting and rolling plant and method for producing slabs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3027331A1 true EP3027331A1 (en) | 2016-06-08 |
EP3027331B1 EP3027331B1 (en) | 2017-03-01 |
Family
ID=51266307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14747587.5A Active EP3027331B1 (en) | 2013-07-30 | 2014-07-29 | Casting and rolling plant and method for producing slabs |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3027331B1 (en) |
CN (1) | CN105473247A (en) |
DE (1) | DE102013214940A1 (en) |
WO (1) | WO2015014864A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017221969A1 (en) | 2017-12-05 | 2019-06-06 | Sms Group Gmbh | Method and device for producing a band-shaped composite material |
ES2953325T3 (en) * | 2020-09-24 | 2023-11-10 | Primetals Technologies Austria GmbH | Casting Composite Rolling Facility and Procedure for Operating Casting Composite Rolling Facility |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4009860C2 (en) * | 1990-03-28 | 1999-11-18 | Schloemann Siemag Ag | Process and plant for the production of hot-rolled steel strip, in particular for stainless steels, from strip-shaped continuous material |
DE19758108C1 (en) | 1997-12-17 | 1999-01-14 | Mannesmann Ag | Method and installation for continuous production of hot rolled thin flat products |
DE102004057427A1 (en) * | 2004-11-27 | 2006-06-01 | Sms Demag Ag | Apparatus and method for continuous casting |
DE102004062636B4 (en) * | 2004-12-21 | 2007-05-24 | Salzgitter Flachstahl Gmbh | Device for horizontal strip casting of steel |
DE102005052774A1 (en) | 2004-12-21 | 2006-06-29 | Salzgitter Flachstahl Gmbh | Method of producing hot strips of lightweight steel |
DE102007057278A1 (en) * | 2007-08-04 | 2009-02-05 | Sms Demag Ag | Method and apparatus for equalizing the heat transfer of a cast product during its reimbursement on the metal conveyor belt of a horizontal strip caster |
CN102245319B (en) | 2008-12-09 | 2014-11-26 | Sms西马格股份公司 | Method for producing strips of metal, and production line for performing the method |
DE102010050647A1 (en) | 2009-11-21 | 2011-05-26 | Sms Siemag Aktiengesellschaft | Plant and method for casting and rolling metal |
IT1405453B1 (en) * | 2010-06-14 | 2014-01-10 | Danieli Off Mecc | LAMINATION PROCEDURE FOR PLAN PRODUCTS AND ITS LAMINATION LINE |
-
2013
- 2013-07-30 DE DE201310214940 patent/DE102013214940A1/en not_active Withdrawn
-
2014
- 2014-07-29 WO PCT/EP2014/066318 patent/WO2015014864A1/en active Application Filing
- 2014-07-29 CN CN201480043513.9A patent/CN105473247A/en active Pending
- 2014-07-29 EP EP14747587.5A patent/EP3027331B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2015014864A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102013214940A1 (en) | 2015-02-05 |
EP3027331B1 (en) | 2017-03-01 |
CN105473247A (en) | 2016-04-06 |
WO2015014864A1 (en) | 2015-02-05 |
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