US20080164003A1 - Method and Installation for Producing Light Gauge Steel with a High Manganese Content - Google Patents

Method and Installation for Producing Light Gauge Steel with a High Manganese Content Download PDF

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Publication number
US20080164003A1
US20080164003A1 US11/666,535 US66653506A US2008164003A1 US 20080164003 A1 US20080164003 A1 US 20080164003A1 US 66653506 A US66653506 A US 66653506A US 2008164003 A1 US2008164003 A1 US 2008164003A1
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United States
Prior art keywords
slab
accordance
installation
immediately
light gauge
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.)
Abandoned
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US11/666,535
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English (en)
Inventor
Jens Kempken
Markus Reifferscheid
Albrecht Girgensohn
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SMS Siemag AG
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Individual
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Filing date
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Assigned to SMS DEMAG AG reassignment SMS DEMAG AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GIRGENSOHN, ALBRECHT, REIFFERSCHEID, MARKUS, KEMPKEN, JENS
Publication of US20080164003A1 publication Critical patent/US20080164003A1/en
Assigned to SMS SIEMAG AKTIENGESELLSCHAFT reassignment SMS SIEMAG AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SMS DEMAG AG
Abandoned legal-status Critical Current

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    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/111—Treating the molten metal by using protecting powders
    • 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
    • B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/142—Plants for continuous casting for curved casting
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving particular fabrication steps or treatments of ingots or slabs
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving particular fabrication steps or treatments of ingots or slabs
    • C21D8/0215—Rapid solidification; Thin strip casting

Definitions

  • the invention concerns a method and an installation for producing hot-rolled strip from a highly cold-workable, high-strength, austenitic light gauge steel with increased contents of manganese (Mn), aluminum (Al), and silicon (Si) with TWIP properties (Twinning-Induced Plasticity), wherein the steel is first cast into an endless strand in a continuous casting installation, cut into slabs, and then rolled to the final thickness.
  • Mn manganese
  • Al aluminum
  • Si silicon
  • Austenitic light gauge steels with TWIP properties for use, e.g., in automobile body parts, reinforcing automobile body members, and cryogenic tanks and pipelines have, for example, according to EP 0 889 144 B1, a chemical composition of 10-30% Mn, 1-6% Si, 1-8% Al (with Si+Al ⁇ 12%), with the remainder consisting of Fe.
  • DE 199 00 199 A1 discloses a high-strength light gauge steel with 7-30% Mn, 1-10% Al, 0.7-4% Si, ⁇ 10% Cr, ⁇ 10% Ni, ⁇ 3% Cu, ⁇ 0.5% C, and optionally with the additional alloying elements N, Va, Nb, Ti, and P, which has not only good mechanical properties but also good resistance to corrosion and stress-corrosion cracking.
  • This steel is intended to be cast by continuous casting and hot rolled or to be cast by thin-strip casting with near-net shape.
  • WO 02/101109 A1 discloses a method in which a significant reduction of the offset yield stress and thus an improvement of the formability by hot rolling and cold rolling are achieved by increasing the possible carbon content (C ⁇ 1%) and by adding additional elements, here especially B as well as Ni, Cu, N, Nb, Ti, V, and P.
  • a feedstock (slab, thin slab, or strip) is heated and hot rolled and coiled within specific temperature limits.
  • EP 1 341 937 B1 describes a method in which a steel containing 12-30% Mn is cast in a twin-roll casting machine into a near-net shape thin strip with a thickness of less than 1 mm to 6 mm.
  • the near-net shape strip emerging vertically from the casting gap is cooled by coolants applied to its surface and is then rolled to the final thickness in a single hot rolling pass.
  • the total time interval between the exit from the casting gap and the entry into the rolling stand is about 8 seconds.
  • EP 1 067 203 B1 discloses a method for producing strip made of an Fe—C—Mn alloy in which a thin steel strip with a thickness of 1.5-10 mm and a composition of 6-30% Mn, 0.001 to 1.6% C, ⁇ 2.5 Si, ⁇ 6% Al, ⁇ 10% Cr and other elements is first cast on a twin-roll casting machine and then hot rolled in one or more stages with 10-60% reduction.
  • the objective of the invention is to specify a method and an installation which can be realized as simply as possible and with which high-manganese steels with a given chemical composition can be produced by continuous casting.
  • An installation for carrying out the method is characterized by the features of Claim 7 .
  • Microsegregations that are still present in the strand after solidification are largely removed again by diffusion during passage through the intermediate furnace, for example, through a roller hearth furnace, before the subsequent rolling deformation.
  • the macrosegregations in the slab center are sufficiently equalized during the intense deformation in the hot rolling mill, much like high-grade austenitic steels.
  • the use of the roller hearth furnace of a CSP installation advantageously avoids any relatively great depletion of the alloying elements and oxidation of the grain boundaries due to the short passage time. Depletion of the alloying elements and oxidation of the grain boundaries can cause problems, for example, during the relatively long heating times in the pusher furnace of a conventional hot-rolled wide strip mill in accordance with the prior art.
  • a suitable flux powder is one which has the property of achieving equilibrium very quickly and then undergoing no further change in its lubrication behavior.
  • the flux powder used in accordance with the invention has a high content of Al 2 O 3 of >10%.
  • the SiO 2 content of the flux powder is increased sufficiently to obtain a basicity (CaO/SiO 2 ratio) of 0.5-0.7.
  • MnO 2 is more readily reduced than SiO 2 by the Al in the steel, and thus the SiO 2 is protected from this reduction (protected from loss), an additional measure that can be taken in accordance with the invention is the addition of MnO 2 to the flux powder.
  • TiO 2 it is also possible to add TiO 2 to the flux powder as a partial replacement of the SiO 2 , since TiO 2 also has a vitrifying effect but is not attacked (reduced) by the Al in the steel.
  • the installation is basically a well-known CSP installation, in which, in accordance with the invention, the distances between the individual installation units were changed in such a way that the method of the invention can be carried out with the requirements that temperature equalization is brought about in a continuous-type intermediate furnace immediately after the solidification and that the slab is then immediately hot rolled without intermediate cooling.
  • the installation illustrated in the drawing consists of a thin-slab casting machine 1 and a downstream intermediate furnace 4 , into which the slab 3 is fed after it has solidified and has been cut from the endless strand 2 .
  • the intermediate furnace 4 is followed by a rolling mill 5 , in which the slab 3 , after it has been subjected to temperature equalization in the intermediate furnace 4 , is immediately (i.e., without intermediate cooling) rolled out into hot-rolled strip 6 .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)
US11/666,535 2005-03-05 2006-03-03 Method and Installation for Producing Light Gauge Steel with a High Manganese Content Abandoned US20080164003A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005010243.3 2005-03-05
DE102005010243A DE102005010243A1 (de) 2005-03-05 2005-03-05 Verfahren und Anlage zur Herstellung eines Leichtbaustahls mit einem hohen Mangan-Gehalt
PCT/EP2006/001954 WO2006094718A1 (de) 2005-03-05 2006-03-03 Verfahren und anlage zur herstellung eines leichtbaustahls mit einem hohe mangan-gehalt

Publications (1)

Publication Number Publication Date
US20080164003A1 true US20080164003A1 (en) 2008-07-10

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Application Number Title Priority Date Filing Date
US11/666,535 Abandoned US20080164003A1 (en) 2005-03-05 2006-03-03 Method and Installation for Producing Light Gauge Steel with a High Manganese Content

Country Status (12)

Country Link
US (1) US20080164003A1 (https=)
EP (1) EP1725347B1 (https=)
JP (1) JP4688890B2 (https=)
KR (1) KR101153735B1 (https=)
CN (1) CN101160183B (https=)
CA (1) CA2560681A1 (https=)
DE (1) DE102005010243A1 (https=)
RU (1) RU2335358C2 (https=)
TW (1) TW200700566A (https=)
UA (1) UA80237C2 (https=)
WO (1) WO2006094718A1 (https=)
ZA (1) ZA200607920B (https=)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104328360A (zh) * 2014-11-20 2015-02-04 北京科技大学 双相孪生诱导塑性超高强度汽车钢板及其制备工艺
CN106624601A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 一种核电站用抗振条组件及其生产方法
CN106653128A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 Acp1000核电站用抗振条组件及其生产方法
CN106624602A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 水堆核电站acp1000用抗振条组件及其生产方法
CN106624603A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 Acp1000抗振条组件及其生产方法
CN106653127A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 一种acp1000核电站用抗振条组件及其生产方法
CN112391571A (zh) * 2020-11-25 2021-02-23 攀钢集团西昌钢钒有限公司 一种高强高铝高锰钢洁净度的控制方法
CN115058661A (zh) * 2022-06-17 2022-09-16 湖南华菱涟源钢铁有限公司 一种高碳高锰钢板及其生产方法
CN115106490A (zh) * 2021-03-19 2022-09-27 宝山钢铁股份有限公司 连铸生产用中空颗粒型开浇渣及其制备方法

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DE102008005806A1 (de) * 2008-01-17 2009-09-10 Technische Universität Bergakademie Freiberg Bauteile aus hochmanganhaltigem, festem und zähem Stahlformguss, Verfahren zu deren Herstellung sowie deren Verwendung
WO2009095264A1 (en) * 2008-01-30 2009-08-06 Corus Staal Bv Method of producing a hot-rolled twip-steel and a twip-steel product produced thereby
CN101543837B (zh) * 2008-03-24 2012-02-29 宝山钢铁股份有限公司 一种Fe-Mn-C系高锰钢薄带连铸连轧制造方法
DE102009030324A1 (de) * 2009-06-24 2011-01-05 Voestalpine Stahl Gmbh Manganstahl und Verfahren zur Herstellung desselben
DE102010034161B4 (de) * 2010-03-16 2014-01-02 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung von Werkstücken aus Leichtbaustahl mit über die Wanddicke einstellbaren Werkstoffeigenschaften
CN104711494B (zh) * 2015-04-14 2017-11-28 钢铁研究总院 低密度高塑性NiAl增强超高强度钢及制备方法
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CN110819908B (zh) * 2019-11-18 2021-03-23 燕山大学 一种高强低密度奥氏体钢及其制备方法
CN112760568B (zh) * 2020-12-25 2022-02-25 钢铁研究总院 一种高强度高塑性低密度钢及其制备方法
CN116083812B (zh) * 2023-01-05 2025-05-20 武钢集团昆明钢铁股份有限公司 一种轻质高强免退火螺栓母材及其制备方法
CN116287975A (zh) * 2023-01-09 2023-06-23 鞍钢股份有限公司 一种高熵钢及制造方法
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US4235632A (en) * 1979-04-04 1980-11-25 Mobay Chemical Corporation Particulate slagging composition for the extended optimum continuous casting of steel
US5065811A (en) * 1988-11-26 1991-11-19 Sms Schloemann-Siemag Aktiengesellschaft Apparatus for the manufacture of hot rolled steel strip
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104328360A (zh) * 2014-11-20 2015-02-04 北京科技大学 双相孪生诱导塑性超高强度汽车钢板及其制备工艺
CN106624601A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 一种核电站用抗振条组件及其生产方法
CN106653128A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 Acp1000核电站用抗振条组件及其生产方法
CN106624602A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 水堆核电站acp1000用抗振条组件及其生产方法
CN106624603A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 Acp1000抗振条组件及其生产方法
CN106653127A (zh) * 2015-10-28 2017-05-10 丹阳市龙鑫合金有限公司 一种acp1000核电站用抗振条组件及其生产方法
CN112391571A (zh) * 2020-11-25 2021-02-23 攀钢集团西昌钢钒有限公司 一种高强高铝高锰钢洁净度的控制方法
CN115106490A (zh) * 2021-03-19 2022-09-27 宝山钢铁股份有限公司 连铸生产用中空颗粒型开浇渣及其制备方法
CN115058661A (zh) * 2022-06-17 2022-09-16 湖南华菱涟源钢铁有限公司 一种高碳高锰钢板及其生产方法

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RU2006136036A (ru) 2008-05-10
EP1725347B1 (de) 2012-12-26
CA2560681A1 (en) 2006-09-14
DE102005010243A1 (de) 2006-09-07
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JP2008531292A (ja) 2008-08-14
EP1725347A1 (de) 2006-11-29
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