EP1323837B1 - Herstellungsverfahren von Stahlprodukt aus Kohlenstoffstahl insbesondere für Galvanisieren. - Google Patents

Herstellungsverfahren von Stahlprodukt aus Kohlenstoffstahl insbesondere für Galvanisieren. Download PDF

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Publication number
EP1323837B1
EP1323837B1 EP02293146A EP02293146A EP1323837B1 EP 1323837 B1 EP1323837 B1 EP 1323837B1 EP 02293146 A EP02293146 A EP 02293146A EP 02293146 A EP02293146 A EP 02293146A EP 1323837 B1 EP1323837 B1 EP 1323837B1
Authority
EP
European Patent Office
Prior art keywords
steel
equal
less
product
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.)
Expired - Lifetime
Application number
EP02293146A
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English (en)
French (fr)
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EP1323837A1 (de
Inventor
Christian Marchionni
Yann Le Papillon
Alain Leclercq
Michel Faral
Jean-Michel Damasse
Philippe Rocabois
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.)
ArcelorMittal France SA
Original Assignee
Arcelor France SA
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Filing date
Publication date
Application filed by Arcelor France SA filed Critical Arcelor France SA
Publication of EP1323837A1 publication Critical patent/EP1323837A1/de
Application granted granted Critical
Publication of EP1323837B1 publication Critical patent/EP1323837B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • C21D8/0215—Rapid solidification; Thin strip casting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-base component
    • Y10T428/12799—Next to Fe-base component [e.g., galvanized]

Definitions

  • the invention relates to iron and steel industry. More specifically, it relates to carbon steels of the type of those to be galvanized, that is to say a deposit of zinc on their surface by soaking the product in a liquid zinc bath. This product is usually in the form of a scrolling strip or sheet metal.
  • Carbon steels for galvanizing are steels containing a maximum of 0.15% carbon and 0.08 to 2% manganese, as well as the usual alloying elements and impurities in carbon steels.
  • the different classes of galvanizing steel are distinguished mainly by their deoxidizing element contents.
  • Class 3 steels have a silicon content of 0.15 to 0.25%.
  • Class 2 steels have a silicon content less than or equal to 0.040%.
  • the so-called "class 1" steels have a silicon content less than or equal to 0.030%.
  • Ingot casting is notoriously less productive than continuous casting and then requires a greater number of hot rolling steps to obtain a product of a given thickness.
  • deoxidation with aluminum it is more expensive in alloying elements.
  • the inclusions of alumina must be as much as possible removed before the continuous casting step so that they do not risk clogging the nozzles of the distributor of the casting machine.
  • liquid alumina inclusions can be made by a calcium treatment, but this introduces an additional cost of alloying elements. It is also necessary to prevent atmospheric reoxidation as much as possible during continuous casting, to avoid the formation of new inclusions of alumina that can not be eliminated before solidification, and which will end up in the final product, they will degrade the mechanical properties.
  • argon is injected into the nozzles introducing the steel into the mold, which again increases the cost of manufacture.
  • the document EP-A-0785283 describes low-carbon steels deoxidized in two stages: first by addition of aluminum, then by addition of titanium, in order to avoid clogging of the casting nozzles.
  • the document US Patent 4024624 discloses low deoxidized steels to which magnesium is added to improve the ductility and weldability of the hot-rolled sheets made therewith.
  • the document EP-A-0906960 discloses steels for titanium deoxidized galvanizing and inclusions of controlled compositions.
  • the document US Patent 4073643 describes steels with low levels of deoxidizing elements and can be coated, and cast by a conventional continuous casting process.
  • the object of the invention is to enable steelmakers to propose galvanizing steel strips and sheets corresponding to grades 1 and 2 previously mentioned, produced at minimum costs, that is to say produced from semi-finished products cast continuously, and containing no or very little aluminum.
  • Said continuous casting machine may be a continuous slab casting machine in a fixed-wall mold.
  • Said continuous casting machine may be a machine for continuous casting of thin strips in a mold with one or more moving walls accompanying the product being solidified.
  • Said machine can, in this case, be a continuous casting between rolls.
  • the subject of the invention is also a process for obtaining a steel product of the preceding type, characterized in that a steel semi-finished product is produced and cast in the form of a strip, using a continuous casting machine. thin strips.
  • This strip can then be rolled.
  • the subject of the invention is also a process for obtaining a steel product, characterized in that a strip is produced by one of the preceding processes, and in that a strip is galvanized.
  • composition of the steel that is desired to obtain has the following characteristics (the percentages are percentages by weight).
  • the carbon content is between 0.0005% and 0.15%.
  • the manganese content is between 0.08% and 2%.
  • the silicon content is less than or equal to 0.040% (class 2 steel), preferably less than or equal to 0.030% (class 1 steel) for, as has been said, to provide a high deposition rate during galvanization .
  • total aluminum content is less than or equal to 0.010%, preferentially less than or equal to 0.004%.
  • soluble aluminum content that is to say soluble in an acid solution at the time of the analysis of the sample
  • traces are, in practice, essentially constituted by aluminum present in the form of alumina in the oxidized inclusions resulting from the contacts between the metal and the pocket slag.
  • the total oxygen content is between 0.0050 and 0.0500%, and preferably between 0.0050 and 0.0300%. This oxygen content results from the chemical equilibrium which has been established in the pocket during the preparation, between the liquid metal and the pocket slag, of the possible supply of atmospheric oxygen to the liquid metal which may have occurred. between the elaboration in the pocket and the casting of the metal in the mold, and the efficiency of the decantation process of the oxidized inclusions formed during and after the preparation in pocket. In general, a total oxygen content in the final product of between 0.0050 and 0.0300% is sought, since beyond 0.0300%, the mechanical properties of the product may be deteriorated.
  • Phosphorus and sulfur contents (less than or equal to 0.20% for sulfur, 0.10% for phosphorus, preferably less than or equal to 0.030%), copper, chromium, nickel, molybdenum, tungsten, cobalt (less than or equal to 1%, preferably less than or equal to 0.5%), titanium, niobium, vanadium, zirconium (less than or equal to 0.5%, preferably less than or equal to 0.2%), tin, antimony, arsenic (less than or equal to 0.1%), boron (less than or equal to 0.1%, preferably equal to 0.01%) and nitrogen (less than or equal to 0.0400% , preferably less than or equal to 0.015%) corresponding to the most usual requirements in galvanizing steels.
  • the other elements present are iron and impurities resulting from the elaboration.
  • a steel having the contents of C, Mn, Si, P, S, Cu, Cr, is produced in the ladle.
  • aluminum can be added to capture most of the dissolved oxygen present in the liquid steel at the time of filling the ladle. casting. Alumina inclusions are thus formed which will normally decant in the pocket slag during the preparation.
  • the steelmaker can determine, using theoretical models available in the literature, which slag compositions can enable him to obtain a given dissolved oxygen content, for given Si and Mn contents. He can adjust the composition of his pocket slag by adding lime, silica, alumina and / or magnesia to form a "synthetic slag". For this purpose, it can proceed to chemical analyzes of slag being developed, so as to determine which oxides must be added to obtain the desired composition. The result of this practice can be controlled by measurements of the dissolved oxygen content of the molten steel made using known electrochemical cells. At the end of the preparation, a steel is obtained whose dissolved oxygen content must be within the limits prescribed for the total oxygen content of the steel according to the invention, and the ladle is sent to the continuous casting plant. .
  • Various oxides contain 100 ppm of dissolved oxygen.
  • the liquid steel present in the ingot mold at the time of casting contains a dissolved oxygen content insufficient to cause a reaction with carbon which would lead to a significant release of CO, potentially causing a dangerous effervescence. This avoids a risk of overflow of the liquid metal out of the mold.
  • This procedure is applicable to steels continuously cast in the form of slabs on machines using oscillating molds with fixed walls. They may be of the conventional type used to cast slabs of the order of 20 cm thick which are then hot-rolled to obtain hot stripes. These can then be galvanized and used as is, or can be cold rolled and other heat or thermomechanical treatments before galvanizing.
  • the casting of a liquid steel produced as above is carried out on a continuous casting plant of the type having a bottomless mold with two large moving walls accompanying the product being solidified.
  • the two main known processes corresponding to this characteristic are the casting between two cooled scrolling strips and the casting between two cylinders with horizontal axes internally cooled and rotated in opposite directions.
  • the casting space where the solidification of the product takes place is closed off laterally by fixed lateral faces.
  • products are obtained directly in the form of strips, generally from 1 to 10 mm in thickness, which can then undergo hot rolling (possibly on a cage arranged in line with the casting installation).
  • the strip can then be used directly, or cold rolled, and various other conventional thermomechanical treatments.
  • the use of such a direct strip casting plant is advantageous in that the liquid well present in the mold has less depth than in a conventional continuous casting mold.
  • the bubbles of CO that form in the lower part of the liquid well therefore have a lower possibility of growth before reaching the surface of the liquid well, and the effervescence is substantially attenuated compared to what would be observed during the casting of the same steel on a conventional continuous casting.
  • the flared up shape of the mold is more suitable than the substantially constant section of conventional fixed molds to attenuate the level variations due to effervescence.
  • the casting of the strip can be carried out on an installation whose mold has only one moving wall, such as a moving strip or a rotating cylinder. It is thus possible to have access to band thicknesses of less than 1 mm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Metal Rolling (AREA)
  • Electroplating Methods And Accessories (AREA)

Claims (4)

  1. Verfahren zum Erhalten eines Stahlhalbzeugs, dadurch gekennzeichnet, dass:
    - flüssiger Strahl mit der folgenden Gewichtszusammensetzung in der Pfanne hergestellt wird:
    - 0,0005% ≤ C ≤ 0,75%,
    - 0,08% ≤ Mn ≤ 2%
    - Si ≤ 0,040%, vorzugsweise ≤ 0,030%,
    - Algesamt ≤ 0,010%, vorzugsweise ≤ 0,004%,
    - Allöslich ≤ 0,004%,
    - P 0,20%, vorzugsweise ≤ 0,03%,
    - S ≤ 0,10%, vorzugsweise ≤ 0,03%,
    - jedes der Elemente Cu, Cr, Ni, Mo, W, Co ≤ 1%, vorzugsweise ≤ 0.5%,
    - jedes der Elemente Ti, Nb, V, Zr ≤ 0,5%, vorzugsweise ≤ 0,2%,
    - jedes der Elemente Sn, Sb, As ≤ 0,1%,
    - B ≤ 0,1%, vorzugsweise ≤ 0,01%,
    - N ≤ 0,0400%, vorzugsweise ≤ 0,0150%,
    wobei der Rest Eisen und Verunreinigungen sind, die aus der Herstellung resultieren,
    und wobei sein Gehalt an gelöstem Sauerstoff dank des Herstellens eines chemischen Gleichgewichts zwischen dem Metall und der Pfannenschlacke, die ihn bedeckt, zwischen 0,0050% und 0,0500% gehalten wird,
    - und der stahl auf einer Dünnband-Gießmaschine in eine Kokille mit einer oder mehr festen oder bewegbaren Wänden gegossen wird, die das Produkt während des Erstarrens begleiten, wobei die Rückoxidationen zwischen der Herstellung in der Pfanne und dem Gießen des Stahls in die Kokille derart begrenzt werden, dass in dem Halbzeug ein Gesamt-Sauerstoffgehalt erhalten wird, der zwischen 0,0050% und 0,0500%, vorzugsweise zwischen 0,0050% und 0,0300% legt, und dass das Auftreten einer Aufwallung in der Kokille verhindert wird.
  2. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass die Maschine ein Strangguss zwischen Walzen ist.
  3. Verfahren zum Erhalten eines Stahlproduktes, dadurch gekennzeichnet, dass:
    - ein Stahlhalbzeug mittels eines Verfahrens gemäß Anspruch 1 oder 2 Hergestellt und gegossen wird,
    - und das Halbzeug in Form eines Bandes laminiert wird.
  4. Verfahren zum Erhalten eines Stahlproduktes, dadurch gekennzeichnet, dass ein Band mittels des Verfahrens gemäß einem der Ansprüche 1 bis 3 erzeugt wird und ein Galvanisieren des Brandes durchgeführt wird.
EP02293146A 2001-12-24 2002-12-18 Herstellungsverfahren von Stahlprodukt aus Kohlenstoffstahl insbesondere für Galvanisieren. Expired - Lifetime EP1323837B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0116831A FR2833970B1 (fr) 2001-12-24 2001-12-24 Demi-produit siderurgique en acier au carbone et ses procedes de realisation, et produit siderurgique obtenu a partir de ce demi-produit, notamment destine a la galvanisation
FR0116831 2001-12-24

Publications (2)

Publication Number Publication Date
EP1323837A1 EP1323837A1 (de) 2003-07-02
EP1323837B1 true EP1323837B1 (de) 2011-10-05

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EP02293146A Expired - Lifetime EP1323837B1 (de) 2001-12-24 2002-12-18 Herstellungsverfahren von Stahlprodukt aus Kohlenstoffstahl insbesondere für Galvanisieren.

Country Status (8)

Country Link
US (1) US7374623B2 (de)
EP (1) EP1323837B1 (de)
JP (1) JP4323166B2 (de)
KR (1) KR100943014B1 (de)
AT (1) ATE527386T1 (de)
AU (1) AU2002318875B2 (de)
CA (1) CA2415244C (de)
FR (1) FR2833970B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080264525A1 (en) * 2004-03-22 2008-10-30 Nucor Corporation High copper low alloy steel sheet
JP4873921B2 (ja) * 2005-02-18 2012-02-08 新日本製鐵株式会社 表面性状、加工性および成形性に優れた極低炭素鋼板および極低炭素鋳片の製造方法
US20100158746A1 (en) * 2006-02-16 2010-06-24 Katsuhiro Sasai Extremely Low Carbon Steel Plate Excellent in Surface Characteristics, Workability, and Formability and a Method of Producing Extremely Low Carbon Cast Slab
KR101008117B1 (ko) 2008-05-19 2011-01-13 주식회사 포스코 표면특성이 우수한 고가공용 고강도 박강판 및용융아연도금강판과 그 제조방법
KR101027250B1 (ko) * 2008-05-20 2011-04-06 주식회사 포스코 고연성 및 내지연파괴 특성이 우수한 고강도 냉연강판,용융아연 도금강판 및 그 제조방법
EP2459756B1 (de) * 2009-07-30 2016-05-11 Tata Steel IJmuiden BV Prozess zur produktion eines kohlenstoffarmen stahles in form einer bramme, eines bandes oder bleches
KR101318382B1 (ko) * 2010-12-27 2013-10-15 주식회사 포스코 표면 결함이 없는 법랑용 강판 및 그 제조방법
EP2670870B1 (de) * 2011-01-31 2016-01-20 Tata Steel IJmuiden BV Verfahren zur herstellung von hochfestem stahl
CN103305770B (zh) * 2012-03-14 2015-12-09 宝山钢铁股份有限公司 一种薄带连铸550MPa级高强耐大气腐蚀钢带的制造方法
CN103305759B (zh) * 2012-03-14 2014-10-29 宝山钢铁股份有限公司 一种薄带连铸700MPa级高强耐候钢制造方法
CN103302255B (zh) * 2012-03-14 2015-10-28 宝山钢铁股份有限公司 一种薄带连铸700MPa级高强耐大气腐蚀钢制造方法

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769004A (en) * 1971-05-10 1973-10-30 Iverson J Method of producing a killed steel
US3988174A (en) * 1972-04-03 1976-10-26 Nippon Steel Corporation Hot rolled steel sheet having excellent workability and method thereof
US3793000A (en) * 1972-06-12 1974-02-19 Nat Steel Corp Process for preparing killed low carbon steel and continuously casting the same, and the solidified steel shapes thus produced
US4073643A (en) * 1973-05-29 1978-02-14 Nippon Steel Corporation Continuously cast steel slabs for steel sheets having excellent workabilities and method for production thereof
US4014683A (en) * 1974-12-23 1977-03-29 National Steel Corporation Method of making Drawing Quality steel
US4024624A (en) * 1976-03-31 1977-05-24 United States Steel Corporation Continuous casting method for the production of rolled low carbon steel products with improved formability
JPS52128821A (en) * 1976-04-12 1977-10-28 Nippon Steel Corp Preparation of high tensile steel having superior low temperature toughness and yield point above 40 kg/pp2
JPS61249651A (ja) 1985-04-30 1986-11-06 Kawasaki Steel Corp 未脱酸溶鋼の連続鋳造方法
JPS61288016A (ja) * 1985-06-13 1986-12-18 Nisshin Steel Co Ltd 浸炭焼入れ性の優れた低炭素熱延鋼板の製造方法
US4746361A (en) * 1987-04-03 1988-05-24 Inland Steel Company Controlling dissolved oxygen content in molten steel
CA1296505C (en) * 1987-05-06 1992-03-03 R. Guthrie Research Associates Inc. Continuous casting of thin metal strip
JPH0742513B2 (ja) * 1989-03-14 1995-05-10 新日本製鐵株式会社 オーステナイト系ステンレス鋼薄板の製造方法
US5460665A (en) * 1991-10-29 1995-10-24 Kawasaki Steel Corporation Method of manufacturing a low-alloy ultra-low-carbon cold anisotropy rolled steel sheet exhibiting an excellent resistance to fabrication embrittlement and small internal anisotropy
US5356493A (en) * 1992-07-08 1994-10-18 Nkk Corporation Blister-resistant steel sheet and method for producing thereof
JPH07266005A (ja) * 1994-03-31 1995-10-17 Nippon Steel Corp 同期型ベルト式連続鋳造法による溶接熱影響部靭性の優れた鋼の製造方法
JP3422612B2 (ja) * 1996-01-19 2003-06-30 Ｊｆｅスチール株式会社 極低炭素冷延鋼板の製造方法
TW415967B (en) * 1996-02-29 2000-12-21 Kawasaki Steel Co Steel, steel sheet having excellent workability and method of the same by electric furnace-vacuum degassing process
FR2767078B1 (fr) * 1997-08-07 1999-10-22 Lorraine Laminage Procede d'elaboration d'une tole mince en acier a ultra bas carbone pour la realisation de produits emboutis pour emballage et tole mince obtenue
TW408184B (en) * 1997-09-29 2000-10-11 Kawasaki Steel Co Manufacturing method for producing Titanium killed steel with smooth surface texture
JP3828720B2 (ja) 2000-06-07 2006-10-04 新日本製鐵株式会社 成形性の優れた鋼管およびその製造方法
UA76140C2 (en) * 2001-04-02 2006-07-17 Nucor Corp A method for ladle refining of steel

Also Published As

Publication number Publication date
KR20030055126A (ko) 2003-07-02
JP4323166B2 (ja) 2009-09-02
ATE527386T1 (de) 2011-10-15
FR2833970B1 (fr) 2004-10-15
FR2833970A1 (fr) 2003-06-27
US20030116232A1 (en) 2003-06-26
JP2003247044A (ja) 2003-09-05
KR100943014B1 (ko) 2010-02-18
US7374623B2 (en) 2008-05-20
CA2415244A1 (fr) 2003-06-24
EP1323837A1 (de) 2003-07-02
CA2415244C (fr) 2010-12-14
AU2002318875B2 (en) 2007-10-25

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