EP0916414A1 - Méthode d'amélioration de la qualité d'une surface d'une brame coulée en continu - Google Patents

Méthode d'amélioration de la qualité d'une surface d'une brame coulée en continu Download PDF

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Publication number
EP0916414A1
EP0916414A1 EP98121250A EP98121250A EP0916414A1 EP 0916414 A1 EP0916414 A1 EP 0916414A1 EP 98121250 A EP98121250 A EP 98121250A EP 98121250 A EP98121250 A EP 98121250A EP 0916414 A1 EP0916414 A1 EP 0916414A1
Authority
EP
European Patent Office
Prior art keywords
slab
reactant
descaling
surface quality
casting
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.)
Withdrawn
Application number
EP98121250A
Other languages
German (de)
English (en)
Inventor
Karl-Ernst Dr.-Ing. Habil. Hensger
Manfred Dipl.-Ing. Kolakowski
Ingo Dipl.-Ing. Schuster
David J. Rintoul
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.)
GFA SITE OFFICE CSP PLANT AT ACME
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
GFA Site Office CSP Plant at ACME
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 SMS Schloemann Siemag AG, Schloemann Siemag AG, GFA Site Office CSP Plant at ACME filed Critical SMS Schloemann Siemag AG
Publication of EP0916414A1 publication Critical patent/EP0916414A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B21B45/04—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 for de-scaling, e.g. by brushing
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • 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
    • B21B1/463—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 continuous process, i.e. the cast not 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
    • B21B2201/14—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
    • Y10T29/45—Scale remover or preventor

Definitions

  • the present invention relates to a method for improvement the surface quality of a continuously cast slab, in particular a thin slab with a maximum casting thickness of 100 mm, the Slab covered with a layer of pouring slag and a layer of scale is, the slab descaled after casting and in one Finishing mill is rolled.
  • the object of the present invention is therefore a Process for improving the surface quality of a continuous cast Create slab using the streaks and streaks no longer occur or are at least significantly reduced, so that also for applications with high quality requirements as raw material Thin slabs can be used.
  • the object is achieved in that the slab before descaling or a different one from water during descaling Reagent is applied.
  • the application of the reactant can be a conventional hydraulic, mechanical or pneumatic removal of the scale layer lying on the slab go ahead.
  • the only figure shows a thin slab caster with a downstream Finishing train.
  • a slab is in a thin slab caster 1 2 cast with a casting thickness d.
  • the casting thickness d is between 20 and 100 mm, e.g. 50 mm.
  • the slab 2 After casting, the slab 2 by the guide rollers 3 of the vertical bent into the horizontal. After that, the slab 2 pre-rolled by roughing 4, e.g. from 50 mm to 35 mm.
  • the Pre-rolling is preferably carried out before or immediately after solidification the slab 2.
  • the liquid metal to be cast in the thin slab caster 1 does not adhere to it, is in the thin slab caster Casting powder used, which as a layer of slag between the mold wall and strand tray comes to rest.
  • the pouring slag connects at the high casting temperatures with the surface of the pouring slab 2 and thus forms a slag film on the surface the slab 2.
  • the slab 2 is made from nozzles 5 with a reactant 6 splashed, which is emulsified in the water glass.
  • the Slab heated in a tunnel furnace 7 for about 20 to 30 minutes and then descaled 8 in the descaler.
  • the finishing train 9 can of course more or less than four scaffolds, e.g. six or two.
  • the detachability of the scale layer is due to the reactant 6 and the slag film considerably better than without the reactant 6. This makes these two layers almost descaling completely removed so that almost no streaks after rolling and streaks are more on the rolled strip.
  • the Heating the slab 2 serves for melting near the surface Areas of the slab 2, thus represents a thermal treatment of the Slab 2.
  • the descaling of the slab 2 takes place in the descaler 8 in a conventional manner, e.g. hydraulic, pneumatic and / or mechanically.
  • metal powders can be used which contain at least one of the following metals: Si, Al, CaSi or CaAl.
  • Non-metals such as carbon can also be used.
  • Oxides are also suitable, for example CaO, SiO 2 , Al 2 O 3 , MgO, MnO, Na 2 O, FeO, Fe 2 O 3 or Fe 3 O 4 .
  • the reactant 6 is in a concentration in the carrier substance up to 90% by volume available. Treatable per square meter Belt surface will be about 1 to 2 liters of the undiluted Reagent 6 required.
  • the reactant 6 is not must be applied to the slab 2 in front of the tunnel furnace 7 got to.
  • the reactant 6 could e.g. also only in tunnel kiln 7 or be applied to the slab 2 during descaling itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
EP98121250A 1997-11-17 1998-11-07 Méthode d'amélioration de la qualité d'une surface d'une brame coulée en continu Withdrawn EP0916414A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19750817 1997-11-17
DE19750817A DE19750817C2 (de) 1997-11-17 1997-11-17 Verfahren zur Verbesserung der Oberflächenqualität einer stranggegossenen Bramme

Publications (1)

Publication Number Publication Date
EP0916414A1 true EP0916414A1 (fr) 1999-05-19

Family

ID=7848934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121250A Withdrawn EP0916414A1 (fr) 1997-11-17 1998-11-07 Méthode d'amélioration de la qualité d'une surface d'une brame coulée en continu

Country Status (7)

Country Link
US (1) US6216770B1 (fr)
EP (1) EP0916414A1 (fr)
JP (1) JPH11221610A (fr)
AR (1) AR017631A1 (fr)
BR (1) BR9806584A (fr)
CA (1) CA2254153C (fr)
DE (1) DE19750817C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105492132A (zh) * 2013-07-30 2016-04-13 Sms集团有限公司 用于制造金属带材的连铸连轧设备
WO2019068444A1 (fr) * 2017-10-03 2019-04-11 Primetals Technologies Austria GmbH Procédé pour faire fonctionner une installation combinée de coulée et de laminage

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10137944A1 (de) * 2001-08-07 2003-02-20 Sms Demag Ag Warmwalzanlage
FR2833871B1 (fr) * 2001-12-20 2004-07-09 Usinor Procede et installation de fabrication de bandes metalliques a partir de bandes coulees directement a partir de metal liquide
DE10325955A1 (de) * 2003-06-07 2004-12-23 Sms Demag Ag Verfahren und Anlage zum Erzeugen von Stahlprodukten mit bester Oberflächenqualität
AT504782B1 (de) 2005-11-09 2008-08-15 Siemens Vai Metals Tech Gmbh Verfahren zur herstellung eines warmgewalzten stahlbandes und kombinierte giess- und walzanlage zur durchführung des verfahrens
CN103586432B (zh) * 2013-11-14 2016-09-21 中冶连铸技术工程股份有限公司 一种连铸机辊列曲线设计方法
JP7256394B2 (ja) * 2019-09-27 2023-04-12 日本製鉄株式会社 熱間加工システム及び熱間加工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU39271A1 (fr) * 1959-11-24 1960-12-12
DE1107478B (de) * 1954-09-02 1961-05-25 Boehler & Co Ag Geb Verfahren zum Entzundern und spanlosen Warmverformen von Blocken, Stranggusserzeugnissen oder Halbzeug aus Eisen oder Stahl in einem Arbeitsgang
EP0453321A1 (fr) * 1990-04-20 1991-10-23 Kawasaki Steel Corporation Procédé pour le décalaminage de bandes laminées à chaud en acier inoxydable
DE19520832A1 (de) * 1994-10-20 1996-04-25 Mannesmann Ag Verfahren und Vorrichtung zur Herstellung von Stahlband mit Kaltwalzeigenschaften

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266101B (de) * 1962-08-13 1968-04-11 Erik Allan Olsson Verfahren zur schuetzenden Oberflaechenbehandlung von Gussmaterial gegen Verzunderung und Entkohlung waehrend des Stranggiessens
JPS535031A (en) * 1976-07-05 1978-01-18 Nippon Steel Corp Method of fabricating coils of hot rolled stee plate excellent in property to be pickled
JPS5458630A (en) * 1977-10-20 1979-05-11 Kobe Steel Ltd Removing of cut sludge in vertical continuous casting machine
JPS569001A (en) * 1979-07-02 1981-01-29 Kawasaki Steel Corp Direct feed rolling method
JPS5770019A (en) * 1980-10-20 1982-04-30 Mitsubishi Heavy Ind Ltd Method for improving exfollation of scale on surface of hot rolled steel plate
JPS5928578A (ja) * 1982-08-10 1984-02-15 Kawasaki Steel Corp 鋼帯のデスケ−リング方法
JP2583366B2 (ja) * 1991-07-11 1997-02-19 川崎製鉄株式会社 ステンレス鋼帯の製造方法
JPH0525666A (ja) * 1991-07-22 1993-02-02 Kawasaki Steel Corp オーステナイト系ステンレス鋼帯の製造方法
AT398396B (de) * 1993-02-16 1994-11-25 Voest Alpine Ind Anlagen Verfahren zum herstellen eines bandes, vorstreifens oder einer bramme

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107478B (de) * 1954-09-02 1961-05-25 Boehler & Co Ag Geb Verfahren zum Entzundern und spanlosen Warmverformen von Blocken, Stranggusserzeugnissen oder Halbzeug aus Eisen oder Stahl in einem Arbeitsgang
LU39271A1 (fr) * 1959-11-24 1960-12-12
EP0453321A1 (fr) * 1990-04-20 1991-10-23 Kawasaki Steel Corporation Procédé pour le décalaminage de bandes laminées à chaud en acier inoxydable
DE19520832A1 (de) * 1994-10-20 1996-04-25 Mannesmann Ag Verfahren und Vorrichtung zur Herstellung von Stahlband mit Kaltwalzeigenschaften

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HENDRICKS C: "BANDGIESSTECHNIK - EINE REVOLUTION IN DER STAHLINDUSTRIE? STRIP CASTING TECHNOLOGY - A REVOLUTION IN THE STEEL INDUSTRY?", STAHL UND EISEN, vol. 115, no. 3, 15 March 1995 (1995-03-15), pages 75 - 81, 159, XP000498052 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105492132A (zh) * 2013-07-30 2016-04-13 Sms集团有限公司 用于制造金属带材的连铸连轧设备
WO2019068444A1 (fr) * 2017-10-03 2019-04-11 Primetals Technologies Austria GmbH Procédé pour faire fonctionner une installation combinée de coulée et de laminage

Also Published As

Publication number Publication date
JPH11221610A (ja) 1999-08-17
DE19750817C2 (de) 2003-03-20
AR017631A1 (es) 2001-09-12
DE19750817A1 (de) 1999-06-02
US6216770B1 (en) 2001-04-17
CA2254153A1 (fr) 1999-05-17
BR9806584A (pt) 2000-02-22
CA2254153C (fr) 2008-02-05

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