EP1590104B1 - Verfahren zum walzen von dünnen und/oder dicken brammen aus stahlwerkstoffen zu warmband - Google Patents

Verfahren zum walzen von dünnen und/oder dicken brammen aus stahlwerkstoffen zu warmband Download PDF

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Publication number
EP1590104B1
EP1590104B1 EP04706634A EP04706634A EP1590104B1 EP 1590104 B1 EP1590104 B1 EP 1590104B1 EP 04706634 A EP04706634 A EP 04706634A EP 04706634 A EP04706634 A EP 04706634A EP 1590104 B1 EP1590104 B1 EP 1590104B1
Authority
EP
European Patent Office
Prior art keywords
rolling
thin
thick
slab
slabs
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.)
Revoked
Application number
EP04706634A
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German (de)
English (en)
French (fr)
Other versions
EP1590104A1 (de
Inventor
Erik Thomanek
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.)
SMS Siemag AG
Original Assignee
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
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Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1590104A1 publication Critical patent/EP1590104A1/de
Application granted granted Critical
Publication of EP1590104B1 publication Critical patent/EP1590104B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/003—Inactive rolling stands
    • 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
    • B21B2201/00—Special rolling modes
    • B21B2201/14—Soft reduction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49991—Combined with rolling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5184—Casting and working

Definitions

  • the invention relates to a method for rolling thin and / or thick slabs of steel materials to hot strip, which were previously cast as thin or thick slabs in a continuous casting, heated in a tunnel kiln or in a walking beam furnace to rolling temperature and rolled in a rolling mill, then cooled and wound up into wrap-arounds.
  • a method for operating a cast roll mill is known (WO 02/068137 A1), wherein a cast roll mill is defined by the coupling of the processes "slab casting” and “hot rolling” otherwise decoupled in the conventional steel sheet production.
  • the casting rolling is based on a slab production line (continuous casting machine) and a rolling line, wherein a slab feeding device is provided, which is independent of the slab production line.
  • slab production line continuous casting machine
  • a slab feeding device is provided, which is independent of the slab production line.
  • a maximum possible production capacity is only possible with either a plant with two casting plants or a two-strand casting plant. Nevertheless, the rolling mill always rolls faster than the casting would work at full casting. Unused production gaps caused by set-up times of the casting machine (distributor, mold or segment change and maintenance).
  • the hot strip is wound after rolling into coils, placed inside a coil box in a holding furnace and fed from there to the finishing train.
  • This procedure results in higher production costs, time and energy losses and a reduction in the production volume.
  • According to the state of the art therefore, only a filling of pauses in the intervals occurring in continuous casting machines remains for a greater utilization of the plant. Only the specific shorter rolling times compared to the specifically larger casting times can be exploited for an increase in the rolling mill performance.
  • the object of the invention is to coordinate the continuous casting process and the rolling process even more effectively by means of largely continuous rolling (maximum utilization of the rolling mills) while at the same time taking account of product planning with the least investment, with energy savings and subsequent introduction of the process into existing rolling mills to increase the rolling performance.
  • the above object is achieved in that from a single thin slab continuous casting machine, which is arranged upstream of an existing rolling mill, continuously behind one another thin slab sections emerging from the tunnel kiln or introduced into the rolling mill thick slab sections, the emerge from the walking beam oven, or thin slab sections, directly in the thickness reducing Vorwalzgerüste or run through roughing or immediately before the first rolling stand of the finishing train and finish rolled in a lying with the roughing stands in a rolling mill finish rolling and only then wound into wound coils.
  • Casting and rolling processes as well as the plant technology can be matched to the desired end product right from the start. This achieves stable overall conditions during casting, rolling and maintenance. There are fewer geometric errors on the hot strip. The roller wear is reduced overall. In addition, cost savings are achieved through significantly higher production throughput.
  • the result is a continuous flow of material in the continuous casting plant and the (previously separate) rolling mill until the output of a predetermined in the quality, quality and quantity of hot strip to the winding coil.
  • the thick slab sections can also be retrofitted or brought from an already existing, remote casting machine for thick slab sections.
  • the advantageous product planning can be designed such that, within a rolling campaign, a percentage of thin slabs and a respective supplementary percentage of thick slabs are fed and rolled continuously successively to the common rolling train, wherein the respective number of thin or thick slabs is determined depending on the respective quality standard of the hot strip to be produced, a reduction of the rolling wear and a maximum production throughput.
  • the thin slabs are primarily out of the continuous casting immediately out through the tunnel kiln with open roughing in the rolling mill and finish rolled.
  • the casting of thin slabs is closest to the casting speed of the rolling speed.
  • slab sections are taken from an intermediate storage for thick and / or thin slabs upstream of the walking beam furnace, thermally prepared and rolled in the finish rolling line on the common rolling line.
  • the slabs come from a remote continuous caster for slabs, even a uniform heating can not be waived.
  • the walking beam furnace is charged depending on the thick slabs, which are sorted by widths and thicknesses. This increases the flexibility of the process and also supports product planning.
  • the product planning can also be supported by other features that the thick slabs are poured and stored depending on the required widths and / or thicknesses.
  • an intermediate product will be introduced in a downstream finishing train which has been cast and / or rolled in thickness and width as an approximately thin slab or slab. Smaller differences in thickness can also be detected by adjusting the pass plans in the rough rolling mills or the finishing train or vice versa on the slab thickness.
  • a further vote slab thickness / roll tapping can be done by the casting profile in the width and / or in the thickness is dimensioned by the continuous casting molds for optimum design of the intermediate product. This allows the intermediate product to be adjusted before the finishing train.
  • a further adaptation of thin slabs and thick slabs to the roll tapping can be further made in that the thin slab is fed between two roughing stands in front of the finishing train, into which a thicker slab is introduced as a transitional slab. This case can occur if, for individual reasons, the thin slab can not be fed into the rolling mill at the optimum location. The feed is then removed before the finishing train. The thickness of the thin slab can be increased, with the pass schedules of the roughing stands being adjusted.
  • two roughing stands can be driven in tandem arrangement for a thick slab of 70 mm and / or roughing stands can be opened as described.
  • a thin slab or a thick slab each with a thickness of 30 mm to 60 mm is introduced into the finishing train as a transfer slab.
  • the thin slab is introduced with increased thickness with increasing distance between two roughing stands.
  • continuous casting takes place in a continuous casting machine 1 of thin slabs 2 or thick slabs 3 of steel materials (C steels, alloyed steels and the like).
  • slab cross-sections 2a with a thickness of about 30 mm to 70 mm are required.
  • the thick slab 3 has a slab cross-section 3a with a thickness of about 70 mm to 300 mm.
  • a transfer slab 16, described below, in front of a plurality of roughing stands 4c of a rolling train 4 has the thickness 9 of a thin slab 2 of approximately 30 mm and can therefore be fed directly into a finishing train 12.
  • the thin slab 2 and the thick slab 3 made of steel materials are rolled after casting in the continuous casting machine 1 in a common rolling mill 4 to hot strip 4a and wound into wound coils 18.
  • the thin slab 2 and the thick slab 3 are uniform in temperature after continuous casting for thermal preparation of the rolling operation in a tunnel kiln 5 or a walking beam furnace 6 and heated to the ramming temperature of the first rolling stand 4b or 4c and then introduced into the rolling line 4.
  • the process is basically as follows: From a single thin slab continuous casting 1, which is upstream of an existing mill 4 by new construction or already exists, are continuously successively thin slab sections 2 b, which are led out of the tunnel kiln 5 or transversely in the Rolling mill 4 introduced thick slab sections 3b, which emerge from the walking beam furnace 6, or thin slab sections 2b, directly in the thickness 9 reducing roughing 4c or by advancing roughing stands 4c or immediately before the first rolling stand of the finishing train 12 introduced and in the with the roughing stands 4c finished finish rolling line 12 lying in a rolling line 4 and only after winding in laminar cooling devices to wound coils 18 wound.
  • the method according to the invention further provides that, within a rolling campaign, a percentage of thin slabs 2 and a respective supplementary percentage of thick slabs 3 are fed and rolled continuously consecutively-practically without pauses, apart from the maintenance-related downtimes - of the common rolling train 4.
  • the respective number of thin slabs 2 and thick slabs 3 is determined as a function of the respective quality standard and the quality 10 of the hot strip 4 a to be produced, a reduction of the roller wear and a maximum production throughput.
  • Such a ratio is e.g. 1/3 thin slabs 2 to 2/3 thick slabs 3.
  • Such mixed rolling, in the second stage of the process i.
  • the rolling of different Brammendikken usually leads to disturbances in the rolling process. These disturbances can be further intensified by changing widths and steel grades.
  • the thin slabs 2 are primarily rolled and discharged from the continuous casting machine 1 directly guided and rolled by the tunnel kiln 5 with open roughing stands 4c in the finishing train 4 and.
  • the thick slabs 3 are cast either on a remote continuous casting machine with a modified casting 15 of a continuous casting mold 14 or preferably due to a forward-looking planning in an independent, if necessary.
  • Remotely located continuous casting and are from a Hubbalkenofen 6 upstream intermediate storage 7 for thick slabs 3rd or thin slabs 2, thermally prepared and transported in the direction of arrow 17 (general transport direction) and rolled in the common finishing train 4.
  • the walking beam furnace 6 is depending on the thick slabs 3, which are sorted by widths 8 and thicknesses 9, charged. It has already been taken into account that the thick slabs 3 have been poured 9 and brought into the intermediate storage 7 as a function of the widths 8 and / or thicknesses required for the end product.
  • thick slabs 3 are poured and stored for average dimensions of the hot strip market.
  • the proportion of thick slabs 3 is produced earlier by a period of several days than intended for the casting of the thin slabs 2. This period makes it possible to produce all the required widths 8 and thicknesses 9 without special application losses on a thick slab casting machine 1.
  • the intermediate storage 7 in front of the walking beam furnace 6 contains thicker slabs 3, which are intended for the planned rolling program and also the transition slabs 16, with which disturbances or short-term changes of the rolling program, can be absorbed as a kind of "fuses".
  • the thick slabs 3 or the thin slabs in the intermediate storage 7 are sorted according to widths 8, thicknesses 9, grades 10 and / or quality groups 11 (see FIG. 2).
  • the casting machine 1 pours the thin slabs 2 with the required width 8 and thickness 9. Due to the direct charging of the thin slabs 2, the casting machine 1 receives the priority for thin slabs 2.
  • the lifting beam furnace 6 for the thick slabs 3 has the second priority.
  • the finishing train 4 basically decides at what time the hot dies 3 are introduced into the rolling line 4.
  • the walking beam furnace 6 is driven as a function of the width 8, the thickness 9 and the quality 10 of a thin slab 2, whereby an optimal strip geometry occurs with the least possible roller wear.
  • the types of storage in the intermediate storage 7 allow such flexibility.
  • an intermediate product 13 is introduced at a position (see Fig. 1) which has been poured and rolled in the thickness 9 and the width 8 as a thin slab 2 or as a thick slab 3.
  • the continuous casting mold 14 can influence the casting profile 15 in the width 8 and / or in the thickness 9 for an optimum design for a transitional slab 16.
  • the continuous casting machine 1 and the rolling train 4 can be operated in the CSP process.
  • the respective continuous casting machine can also be operated with liquid core reduction (LCR).
  • the thin slab 2 can be introduced into a roughing stand 4c of the rolling train 4 into which the thick slab 3 can be introduced as a transfer slab 16 as well.
  • a thin slab 2 or a thick slab 3 each having a thickness 9 of 30 mm to 60 mm is fed immediately before the finishing train 12.
  • a thin slab 2 is introduced with the same thickness 9 in front of the last roughing stand 4c.
  • the transitional slab 16 may be a thin slab 2 with and without deviation from the base thickness, or a reduced thick slab 3 that is run into the roughing stands 4c. It can also form a reduced thin slab 2 for the roughing stands 4c.
  • the thin slabs 2 of increased thickness 9 are introduced with increasing distance to the finishing train 12 before a roughing stand 4c .
  • the thickness 9 of the thin slab 2 is further increased and the stitch plans of the roughing stands 4c are adjusted.
  • two roughing stands 4c are rolled in tandem for a thick slab 3 having the thickness 9 of 70 mm and / or the roughing stands 4c are opened.
  • the intermediate storage 7 may also consist of two bearings for thick slabs 9, for example, which are each sorted by quality groups 11 and width classes. One group is for product planning and one group is for unpredictable operating conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP04706634A 2003-02-04 2004-01-30 Verfahren zum walzen von dünnen und/oder dicken brammen aus stahlwerkstoffen zu warmband Revoked EP1590104B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10304318.7A DE10304318C5 (de) 2003-02-04 2003-02-04 Verfahren zum Walzen von dünnen und/oder dicken Brammen aus Stahlwerkstoffen zu Warmband
DE10304318 2003-02-04
PCT/EP2004/000832 WO2004069440A1 (de) 2003-02-04 2004-01-30 Verfahren zum walzen von dünnen und/oder dicken brammen aus stahlwerkstoffen zu warmband

Publications (2)

Publication Number Publication Date
EP1590104A1 EP1590104A1 (de) 2005-11-02
EP1590104B1 true EP1590104B1 (de) 2006-08-16

Family

ID=32695169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04706634A Revoked EP1590104B1 (de) 2003-02-04 2004-01-30 Verfahren zum walzen von dünnen und/oder dicken brammen aus stahlwerkstoffen zu warmband

Country Status (14)

Country Link
US (1) US7513026B2 (ko)
EP (1) EP1590104B1 (ko)
JP (1) JP2006515230A (ko)
KR (1) KR101133452B1 (ko)
CN (1) CN100357044C (ko)
AT (1) ATE336309T1 (ko)
CA (1) CA2515097C (ko)
DE (2) DE10304318C5 (ko)
ES (1) ES2270342T3 (ko)
RU (1) RU2335357C2 (ko)
TW (1) TW200507963A (ko)
UA (1) UA87103C2 (ko)
WO (1) WO2004069440A1 (ko)
ZA (1) ZA200503676B (ko)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004058550A1 (de) * 2004-12-03 2006-06-14 Sms Demag Ag CSP-Stranggießanlage mit Rollenherdofen und Schwenkfähren
CN100435987C (zh) * 2006-11-10 2008-11-26 广州珠江钢铁有限责任公司 一种基于薄板坯连铸连轧流程采用Ti微合金化工艺生产700MPa级高强耐候钢的方法
DE102008010062A1 (de) * 2007-06-22 2008-12-24 Sms Demag Ag Verfahren zum Warmwalzen und zur Wärmebehandlung eines Bandes aus Stahl
DE102007057423A1 (de) * 2007-11-29 2009-06-04 Sms Demag Ag Fräsmaschine zum Fräsen einer Bramme
CN101653779B (zh) * 2008-08-20 2011-06-15 中冶赛迪工程技术股份有限公司 一种热轧带钢生产工艺-ehsp及方法
IT1400002B1 (it) 2010-05-10 2013-05-09 Danieli Off Mecc Procedimento ed impianto per la produzione di prodotti laminati piani
RU2471580C1 (ru) * 2011-08-17 2013-01-10 Александр Иванович Трайно Способ производства тонкой горячекатаной листовой стали
JP2015035006A (ja) * 2012-04-26 2015-02-19 インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ 複数の要素の結合結果を識別する情報処理装置、プログラムおよび方法
ITUD20130128A1 (it) * 2013-10-04 2015-04-05 Danieli Off Mecc Impianto siderurgico a linea di co-laminazione multipla e relativo metodo di produzione
CN106493169A (zh) * 2016-12-14 2017-03-15 四川德胜集团钒钛有限公司 一种轧钢的生产工艺
KR101998966B1 (ko) 2017-11-03 2019-07-10 주식회사 포스코 연주압연장치 및 연주압연방법
IT201800010870A1 (it) * 2018-12-06 2020-06-06 Danieli Off Mecc Apparato e metodo di produzione di nastri
CN113172088B (zh) * 2021-03-19 2023-04-25 兴化市广福金属制品有限公司 一种不锈钢钢锭轧钢带设备
DE102021208149A1 (de) * 2021-07-28 2023-02-02 Sms Group Gmbh Verfahren und Anlage zum Warmwalzen von metallenem Walzgut
WO2023052500A1 (de) * 2021-10-01 2023-04-06 Sms Group Gmbh Anlage und verfahren zur herstellung von flachwalzprodukten
CN115029539A (zh) * 2022-05-11 2022-09-09 首钢京唐钢铁联合有限责任公司 一种厚规格板坯加热炉加热薄板坯的方法

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Also Published As

Publication number Publication date
DE10304318C5 (de) 2015-10-15
DE10304318B4 (de) 2013-04-18
DE502004001199D1 (de) 2006-09-28
KR101133452B1 (ko) 2012-04-09
RU2335357C2 (ru) 2008-10-10
CA2515097C (en) 2010-12-14
DE10304318A1 (de) 2004-08-12
US20060143897A1 (en) 2006-07-06
US7513026B2 (en) 2009-04-07
EP1590104A1 (de) 2005-11-02
UA87103C2 (ru) 2009-06-25
ES2270342T3 (es) 2007-04-01
ZA200503676B (en) 2005-12-05
CA2515097A1 (en) 2004-08-19
CN1747800A (zh) 2006-03-15
CN100357044C (zh) 2007-12-26
TW200507963A (en) 2005-03-01
TWI301425B (ko) 2008-10-01
RU2005127592A (ru) 2006-02-10
KR20050094045A (ko) 2005-09-26
ATE336309T1 (de) 2006-09-15
WO2004069440A1 (de) 2004-08-19
JP2006515230A (ja) 2006-05-25

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