EP3341142A1 - Installation based on the csp concept and method for operating such an installation - Google Patents
Installation based on the csp concept and method for operating such an installationInfo
- Publication number
- EP3341142A1 EP3341142A1 EP16756979.7A EP16756979A EP3341142A1 EP 3341142 A1 EP3341142 A1 EP 3341142A1 EP 16756979 A EP16756979 A EP 16756979A EP 3341142 A1 EP3341142 A1 EP 3341142A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- semi
- thickness
- continuous operation
- batch mode
- 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
- 238000009434 installation Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 32
- 238000005096 rolling process Methods 0.000 claims abstract description 86
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- 238000005266 casting Methods 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 8
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 3
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 2
- 229910000954 Medium-carbon steel Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension 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
- B21B2201/00—Special rolling modes
- B21B2201/08—Batch rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Definitions
- the invention relates to a system and a method for producing
- Metal bands preferably steel bands, of a thickness of 0.8 to 3.0 mm, of pre-potted thin slabs with a thickness of 40 - 140 mm, in batch or semi-continuous operation.
- the invention further relates to a method for operating such a system.
- CSP-® stands for “Compact Strip Production.”
- CSP-® stands for “Compact Strip Production.”
- the liquid steel is cast into thin slabs, which after a
- a hot strip produced on a CSP ® plant is characterized by a high quality, it has a uniform structure and homogeneous mechanical-physical properties over the entire strip length and width. The band geometry lies within the narrowest tolerances.
- the invention relates to a system which can be operated both in batch mode and in semi-continuous operation, in particular can be switched between these modes.
- the expert calls such a procedure of the system in which the emerging from the casting thin slab is shortened depending on the thickness and even before entering the downstream tunnel kiln to such a length that after leaving the rolling device in the downstream coiler a Coil can be wound with a predetermined length and a predetermined weight.
- a so-called semi-continuous operation of the expert calls a driving style of such a system in which the thin slab is cut after leaving the casting machine so that a so-called Jumbobramme arises whose length usually corresponds to an integer multiple of a slab from the batch mode. From such a Jumbobramme, which after leaving the
- Casting machine is also introduced into the tunnel kiln, is then in
- Thin slabs have long been known to the skilled person for many years. The same applies to the CSP ® system concept.
- EP 2 195 124 B1 describes a compact and flexible CSP® plant for continuous, semi-continuous and batch operation.
- the system described here is designed so that it can be operated in all three possible modes for such types of plant, usually for batching two parallel casting machines are provided in front of the rolling device and a pair of scissors between the caster and the rolling device is arranged to the
- WO 2011/141790 A2 describes a method and an installation for the production of flat rolled products, which also implements the CSP plant concept. Under certain conditions, switching between all three operating modes mentioned above will also be effected in this system.
- Rolling mills in which the roll nips, if necessary provided with a bias, are completely closed in order, in the event of operational suspension of the respective rolling mills, under the influence of the rolling forces acting on the metal strip
- disturbances can occur.
- the initiation of a semi-continuous operation especially in higher-strength grades leads to disruption of the rolling operation, for example due to a not easily introducing the strip beginnings in the nip.
- the semi-continuous operation can be used when the rolling device is warm and a final thickness in the target area of the minimum final thickness has already been reached in advance in the batch mode.
- the first final thickness in the semi-continuous operation preferably corresponds to the final final thickness in batch mode, wherein by means of adjusting at least the roll gap of a roll stand, preferably a plurality of roll nips of the rolling stands of the rolling device, by means of so-called "flying-gauge-change" then the minimum Final thickness set and achieved in the thin strip.
- the separation of the band takes place in coils with a behind the
- Roller device arranged flying shears, which is arranged in front of the reel device, in particular the here commonly used underfloor reels.
- the invention thus provides a method and a system with a correspondingly programmed control device, which enables the switching from batch mode to semi-continuous mode, in which a part of a pre-potted Jumbobramme, preferably at least half of the Jumbobramme, with the minimum end thickness can be produced without the need to bring the hot strip to operating temperature under the action of external energy; Rather, the setting of the operating temperature of the system according to the invention, in particular of their rolling, in batch mode or in semi-continuous operation during the production of metal strips by selecting the correct rolling speed.
- the system of the invention is thus able to produce thin strips of a variety of steel grades both in batch mode and semi-continuous operation and this produce particularly low thicknesses energetically favorable.
- the operating mode Batch mode is in principle for larger end thicknesses and the mode Semi-continuous mode for thinner or thinnest Thicknesses selected, the plant has a total capacity of about 4 million.
- the rolling device has two groups of a plurality of rolling stands, in particular a first group with two rolling stands and a second group arranged downstream of the first group with up to five rolling stands. Between these groups of rolling stands, an induction heating can be arranged, which preferably consists of the
- Rolling device and the entire rolling line is provided extendable. While induction heating is not used regularly in batch mode, induction heating can be used in semi-continuous operation, in particular in the case of induction heating
- Rolling device used to keep the structure of the hot strip throughout the rolling process in the austenitic phase region.
- Roller device stands.
- the switching is preferably carried out after rolling a plurality, preferably of more than two, more preferably of between two to two and a half, individual slabs.
- a standard size of z. B. has five individual slab lengths, produces at least half of the coils produced from the Jumbobramme in the desired minimum final thickness in semi-continuous operation.
- a preferably flying scissors is arranged, with which the thin strip produced can be cut to the desired length for the coil.
- Rolling device dimensioned so that it corresponds to at least the length of a jumbo booms for performing the semi-endless operation.
- the length of a jumbobramme will correspond to a multiple of the length of a single slab, the length of the furnace, preferably of the tunnel kiln, being dimensioned such that a jumbobramme of five times the length of a long single slab
- Leave casting machines with a thickness of 40 to 140 mm This provides a process that provides the greatest possible mix of products, both in terms of final thickness achievable and steel grades to be processed.
- steel strip of the grade "low carbon steel” preferably steel strip with a thickness of 0.8 to 1, 2 mm in semi-continuous operation and steel strip with a thickness greater than 1, 2 mm in batch mode ,
- the plant manufactures steel strip grade "medium-carbon steel”, preferably steel strip with a thickness of 1, 4 to 1, 8 mm in semi-continuous operation and steel strip with thickness greater than 1, 8 mm in batch mode is also preferred.
- the plant manufactures steel strip of the grade "high carbon steel”, preferably steel strip with a thickness of 1, 4 to 2.0 mm in semi-continuous operation and steel strip with thicknesses greater than 2.0 mm is also preferred.
- the plant manufactures steel strip of the "high-strength low-alloyed steel” grade preferably steel strip with a thickness of 1.4 to 2.0 mm in semi-continuous operation and with thicknesses greater than 2.0 mm in batch mode.
- FIG. 1 is a schematic representation of a CSP ® plant according to the invention.
- Figure 2 is a tabular listing of the producible strip thicknesses
- Figure 1 shows a schematic representation of a CSP ® plant according to the invention, which is able to cast over the casting machine into thin slabs
- At least the length of the upper tunnel kiln 3 is dimensioned such that at least one jumbobramme for carrying out a semi-continuous operation can be completely accommodated in the tunnel kiln 3.
- the lower tunnel kiln 3 immediately downstream of the parallel casting machine 1 may also have this length, but must be at least equal to the length of a single slab for batch operation to be able to receive and heat this single slab when performing the batch operation.
- the second tunnel kiln 3 can also serve as a buffer for the upper casting machine tunnel kiln arrangement 1, 3 via a suitable switching device between the tunnel kilns 3.
- a scale scrubber 4 for removing surface scale is provided downstream of the upper tunnel kiln 3 and in front of the first roll stand group 5, thereby positively promoting rolling in the first group of rolling stands 5
- Roll stand group 5 and the second roll stand group 8 is also a Induction heating 7 is arranged, which can preferably be removed from the rolling line, if the induction heater 7 is not required for carrying out the rolling process. This is regularly the case when the system according to the invention is run in batch mode, or when in semi-continuous operation bands with comparatively large thicknesses of 2 to 2.5 mm are to be produced.
- a laminar cooling section 9 is arranged for setting the desired reeling temperature for the thin strip.
- This laminar cooling section 9 is preferably provided with means for controllably increased cooling of the thin strip, usually liquid nozzles or nozzles capable of applying a mixture of air and a cooling liquid to the thin strip.
- FIG. 2 shows, by way of example, a tabular listing of the steel grades that can be machined on the system according to the invention and in the method according to the invention and the strip thicknesses to be produced via the system, wherein it is also indicated which steel grades and which strip thicknesses in the semi-endless-roll mode and the batch mode operating mode can be produced.
- "low-carbon steel" steel grades with final thicknesses greater than 1.4 mm can be used in batch mode and in the
- Thickness range 0.8 mm to 1, 4 mm are produced in semi-continuous operation.
- the steel grade "advanced high-strength steel” is again produced in the thickness range 1, 4 to 2.5 mm in semi-continuous operation.
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 |
---|---|---|---|
DE102015216512.4A DE102015216512A1 (en) | 2015-08-28 | 2015-08-28 | Plant according to the CSP concept and method for operating such a plant |
PCT/EP2016/069220 WO2017036769A1 (en) | 2015-08-28 | 2016-08-12 | Installation based on the csp concept and method for operating such an installation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3341142A1 true EP3341142A1 (en) | 2018-07-04 |
EP3341142B1 EP3341142B1 (en) | 2020-01-15 |
Family
ID=56800272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16756979.7A Active EP3341142B1 (en) | 2015-08-28 | 2016-08-12 | Method for operating an installation based on the csp concept |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3341142B1 (en) |
DE (1) | DE102015216512A1 (en) |
TW (1) | TWI615210B (en) |
WO (1) | WO2017036769A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110202106A (en) * | 2019-06-04 | 2019-09-06 | 甘肃酒钢集团宏兴钢铁股份有限公司 | The method for controlling CSP thin sheet continuous casting machine production medium carbon alloy steel slab surface cracks |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108405616B (en) * | 2018-03-07 | 2021-02-12 | 黑龙江工程学院 | Preparation method and equipment for continuous casting and rolling of magnesium alloy material assisted by ultrasonic waves |
DE102019207459A1 (en) * | 2018-05-23 | 2019-11-28 | Sms Group Gmbh | Casting mill for batch and continuous operation |
CN109731914B (en) * | 2019-02-21 | 2020-07-24 | 江苏沙钢集团有限公司 | Rolling method for improving surface quality of double-roller continuous casting rolled strip |
IT202000000316A1 (en) * | 2020-01-10 | 2021-07-10 | Danieli Off Mecc | METHOD AND APPARATUS FOR THE PRODUCTION OF FLAT METALLIC PRODUCTS |
EP4049768A1 (en) * | 2021-02-25 | 2022-08-31 | Primetals Technologies Austria GmbH | Composite casting and rolling system and method for producing hot strip having a final thickness of less than 1. 2 mm on the composite casting and rolling system |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327375A (en) | 1997-07-21 | 1999-01-27 | Kvaerner Metals Cont Casting | Continuous metal manufacturing method and apparatus therefore |
PL1868748T3 (en) | 2005-04-07 | 2009-01-30 | Giovanni Arvedi | Process and system for manufacturing metal strips and sheets without solution of continuity between continuous casting and rolling |
DE102006054932A1 (en) | 2005-12-16 | 2007-09-13 | Sms Demag Ag | Method and device for producing a metal strip by casting rolls |
DE102006005635A1 (en) * | 2006-02-08 | 2007-08-09 | Sms Demag Ag | Roller hearth furnace for heating and / or temperature compensation of continuous casting products made of steel or steel alloy and its arrangement in front of a hot strip finishing train |
DE102008029581A1 (en) | 2007-07-21 | 2009-01-22 | Sms Demag Ag | Method and apparatus for making strips of silicon or multi-phase steel |
DE102008020412A1 (en) | 2007-08-24 | 2009-02-26 | Sms Demag Ag | Method and device for producing a metal strip by casting rolls |
DE102008003222A1 (en) | 2007-09-13 | 2009-03-19 | Sms Demag Ag | Compact flexible CSP system for continuous, semi-continuous and batch operation |
CN102271833B (en) | 2008-10-30 | 2014-01-29 | 西门子公司 | Method for adjusting a discharge thickness of rolling stock that passes through a multi-stand mill train, control and/or regulation device and rolling mill |
CA2745044C (en) * | 2008-12-09 | 2015-06-30 | Sms Siemag Ag | Method of making metal strip and plant for carrying out the method |
IT1400002B1 (en) | 2010-05-10 | 2013-05-09 | Danieli Off Mecc | PROCEDURE AND PLANT FOR THE PRODUCTION OF FLAT LAMINATED PRODUCTS |
EP2441540A1 (en) * | 2010-10-12 | 2012-04-18 | Siemens VAI Metals Technologies GmbH | Method and assembly for energy-efficient production of hot rolled steel strips |
EP2964404B1 (en) * | 2013-03-08 | 2017-05-10 | SMS group GmbH | Method for producing a metal strip by casting and rolling |
DE102014213537A1 (en) * | 2013-12-05 | 2015-06-11 | Sms Siemag Ag | Method and device for producing a metallic strip in the cast rolling process |
EP3089833B2 (en) | 2013-12-20 | 2022-08-10 | Novelis Do Brasil LTDA. | Dynamic shifting of reduction (dsr) to control temperature in tandem rolling mills |
-
2015
- 2015-08-28 DE DE102015216512.4A patent/DE102015216512A1/en active Pending
-
2016
- 2016-08-12 EP EP16756979.7A patent/EP3341142B1/en active Active
- 2016-08-12 WO PCT/EP2016/069220 patent/WO2017036769A1/en unknown
- 2016-08-15 TW TW105125923A patent/TWI615210B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110202106A (en) * | 2019-06-04 | 2019-09-06 | 甘肃酒钢集团宏兴钢铁股份有限公司 | The method for controlling CSP thin sheet continuous casting machine production medium carbon alloy steel slab surface cracks |
Also Published As
Publication number | Publication date |
---|---|
TWI615210B (en) | 2018-02-21 |
EP3341142B1 (en) | 2020-01-15 |
WO2017036769A1 (en) | 2017-03-09 |
DE102015216512A1 (en) | 2017-03-02 |
TW201711766A (en) | 2017-04-01 |
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