EP2406404A1 - Verfahren zum erzeugen eines warmbandes und aus einem ferritischen stahl hergestelltes warmband - Google Patents
Verfahren zum erzeugen eines warmbandes und aus einem ferritischen stahl hergestelltes warmbandInfo
- Publication number
- EP2406404A1 EP2406404A1 EP09775845A EP09775845A EP2406404A1 EP 2406404 A1 EP2406404 A1 EP 2406404A1 EP 09775845 A EP09775845 A EP 09775845A EP 09775845 A EP09775845 A EP 09775845A EP 2406404 A1 EP2406404 A1 EP 2406404A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- hot strip
- ferritic steel
- hot
- melt
- 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
Classifications
-
- 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
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
-
- 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
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
-
- 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
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
-
- 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
-
- 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
- C21D8/0221—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 characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- 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
Definitions
- the invention relates to a method for producing a hot strip of a conversion-free ferritic steel, in which a melt is cast into a precursor and this is then rolled into a hot strip.
- Conversion-free ferritic steels are via the usual continuous casting route, i. H. Continuous casting of the melt into a slab or thin slab, which is rolled either in-line or separately to a hot strip, or not produced with the required properties.
- the slab or thin slab produced by continuous casting has macrosegregations and forms voids.
- the precursor has a very coarse grain and the casting powder is problematic due to the high aluminum content of the ferritic steel.
- the specified upper limit for the thickness of 6 mm can not be achieved with the existing systems, the actual maximum thickness to be set is usually 4 mm, in special cases at max. 5 mm.
- this thickness range is interesting, for example, for the use of the hot strip as a lightweight component in the exhaust system of vehicles.
- hot strip as a lightweight component in the exhaust system of vehicles.
- a low degree of hot forming means coarse grain, which has a negative effect on the ductility and thus on the formability of the hot strip.
- the object of the invention is therefore to provide a method for producing hot strip from a conversion-free ferritic steel, with the fine while maintaining the advantages of the two-roll casting machine in the hot strip of 2-3 mm thickness can be set.
- This object is achieved by a method in which the melt is flow-calmed in a horizontal strip casting plant and free from casting into a preliminary strip in the range between 6 and 20 mm and then rolled to hot strip with a degree of deformation of at least 50%.
- the advantage of the proposed method is the fact that when using a horizontal continuous casting machine as a casting machine, the advantages of the known two-roller casting machine, such as reduction of Macroseiger Weggarten suppression of voids and avoiding G confusepulverproblematik, even at high Al contents in ferritic steel also come into play and beyond the thickness of the hot strip is considerably greater than the thickness of a hot strip produced by means of a two-roller casting machine.
- the length of the conveyor belt is selected so that at the end of the conveyor belt before its deflection, the Vorband is largely solidified.
- a homogenization zone which is used for temperature compensation and possible stress relief.
- Rolling from pre-strip to hot strip can be done either in-line or separately off-line. Before off-line rolling, the pre-strip can be either directly hot-rolled or sliced into sheets prior to cooling after production. The strip or sheet material is then reheated after eventual cooling and unwound for off-line rolling or reheated and rolled as a sheet.
- a preferred grade for the ferritic steel is one with high Mn levels up to
- Another preferred grade is characterized by containing no Mn and no Si at comparable C, Cr and Al contents.
- Both mentioned grades may optionally contain one or more precipitation-forming elements of the type B, Ta, Zr, Nb, V, Ti, Mo and W, totaling at most 2% by weight.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/DE2009/000328 WO2010102595A1 (de) | 2009-03-11 | 2009-03-11 | Verfahren zum erzeugen eines warmbandes und aus einem ferritischen stahl hergestelltes warmband |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2406404A1 true EP2406404A1 (de) | 2012-01-18 |
| EP2406404B1 EP2406404B1 (de) | 2017-08-23 |
Family
ID=41271848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09775845.2A Not-in-force EP2406404B1 (de) | 2009-03-11 | 2009-03-11 | Verfahren zum erzeugen eines warmbandes aus einem ferritischen stahl mittels horizontalem bandgiessen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8852356B2 (de) |
| EP (1) | EP2406404B1 (de) |
| KR (1) | KR101563606B1 (de) |
| RU (1) | RU2493266C2 (de) |
| WO (1) | WO2010102595A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011000089A1 (de) * | 2011-01-11 | 2012-07-12 | Thyssenkrupp Steel Europe Ag | Verfahren zum Herstellen eines warmgewalzten Stahlflachprodukts |
| DE102011010040B3 (de) | 2011-02-02 | 2012-08-02 | Salzgitter Flachstahl Gmbh | Verfahren und Einrichtung zum Erzeugen eines gegossenen Bandes aus Stahl mit über den Bandquerschnitt und die Bandlänge einstellbaren Werkstoffeigenschaften |
| DE102012013425A1 (de) | 2012-07-03 | 2014-01-09 | Salzgitter Flachstahl Gmbh | Kontinuierlich arbeitende Bandgieß- und Walzanlage |
| KR101749201B1 (ko) | 2013-05-06 | 2017-06-20 | 잘쯔기터 플래시슈탈 게엠베하 | 경량 강으로 부품을 제조하기 위한 방법 |
| DE102013013407B4 (de) * | 2013-08-07 | 2015-05-28 | Salzgitter Flachstahl Gmbh | Verfahren zur Herstellung von Schneid- und Zerspanwerkzeugen aus Stahl mit verbesserter Standzeit |
| DE102015112215A1 (de) * | 2015-07-27 | 2017-02-02 | Salzgitter Flachstahl Gmbh | Hochlegierter Stahl insbesondere zur Herstellung von mit Innenhochdruck umgeformten Rohren und Verfahren zur Herstellung derartiger Rohre aus diesem Stahl |
| DE102015112886A1 (de) * | 2015-08-05 | 2017-02-09 | Salzgitter Flachstahl Gmbh | Hochfester aluminiumhaltiger Manganstahl, ein Verfahren zur Herstellung eines Stahlflachprodukts aus diesem Stahl und hiernach hergestelltes Stahlflachprodukt |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19634524A1 (de) * | 1996-08-27 | 1998-04-09 | Krupp Ag Hoesch Krupp | Leichtbaustahl und seine Verwendung für Fahrzeugteile und Fassadenverkleidungen |
| JP3263359B2 (ja) * | 1997-04-04 | 2002-03-04 | 川崎製鉄株式会社 | シートバーの大単重熱間圧延方法 |
| FR2763960B1 (fr) * | 1997-05-29 | 1999-07-16 | Usinor | Procede de fabrication de bandes minces d'acier inoxydable ferritique, et bandes minces ainsi obtenues |
| TW496903B (en) * | 1997-12-19 | 2002-08-01 | Armco Inc | Non-ridging ferritic chromium alloyed steel |
| AUPR047900A0 (en) * | 2000-09-29 | 2000-10-26 | Bhp Steel (Jla) Pty Limited | A method of producing steel |
| DE10060948C2 (de) | 2000-12-06 | 2003-07-31 | Thyssenkrupp Stahl Ag | Verfahren zum Erzeugen eines Warmbandes aus einem einen hohen Mangan-Gehalt aufweisenden Stahl |
| DE102004061284A1 (de) | 2003-12-23 | 2005-07-28 | Salzgitter Flachstahl Gmbh | Verfahren zum Erzeugen von Warmbändern aus Leichtbaustahl |
| KR101178775B1 (ko) * | 2003-12-23 | 2012-09-07 | 막스-플랑크-인스티투트 퓌어 아이젠포르슝 게엠베하 | 경량 구조강의 핫 스트립의 제조 방법 |
| JP5062985B2 (ja) * | 2004-10-21 | 2012-10-31 | 新日鉄マテリアルズ株式会社 | 加工性に優れた高Al含有鋼板及びその製造方法 |
| DE102004062636B4 (de) | 2004-12-21 | 2007-05-24 | Salzgitter Flachstahl Gmbh | Einrichtung zum horizontalen Bandgießen von Stahl |
| DE102005052774A1 (de) | 2004-12-21 | 2006-06-29 | Salzgitter Flachstahl Gmbh | Verfahren zum Erzeugen von Warmbändern aus Leichtbaustahl |
| DE202005021771U1 (de) | 2005-12-20 | 2010-02-18 | Salzgitter Flachstahl Gmbh | Umformbarer Leichtbaustahl |
| DE102005062854A1 (de) | 2005-12-23 | 2007-07-05 | Salzgitter Flachstahl Gmbh | Verfahren und Einrichtung zum Erzeugen von metallischen Warmbändern insbesondere aus Leichtbaustahl |
| DE102005063058B3 (de) | 2005-12-29 | 2007-05-24 | Thyssenkrupp Nirosta Gmbh | Verfahren zum Herstellen eines Kaltbands mit ferritischem Gefüge |
| EP1995336A1 (de) * | 2007-05-16 | 2008-11-26 | ArcelorMittal France | Stahl geringer Dichte mit guter Tiefzieh-Eigenschaft |
-
2009
- 2009-03-11 RU RU2011141085/02A patent/RU2493266C2/ru active
- 2009-03-11 KR KR1020117020999A patent/KR101563606B1/ko not_active Expired - Fee Related
- 2009-03-11 US US13/255,539 patent/US8852356B2/en not_active Expired - Fee Related
- 2009-03-11 EP EP09775845.2A patent/EP2406404B1/de not_active Not-in-force
- 2009-03-11 WO PCT/DE2009/000328 patent/WO2010102595A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010102595A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101563606B1 (ko) | 2015-10-27 |
| RU2493266C2 (ru) | 2013-09-20 |
| EP2406404B1 (de) | 2017-08-23 |
| US20120093677A1 (en) | 2012-04-19 |
| US8852356B2 (en) | 2014-10-07 |
| RU2011141085A (ru) | 2013-04-20 |
| WO2010102595A1 (de) | 2010-09-16 |
| KR20110126134A (ko) | 2011-11-22 |
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Inventor name: EICHHOLZ, HELLFRIED Inventor name: SPITZER, KARL-HEINZ Inventor name: SCHAEPERKOETTER, MARKUS Inventor name: SPRINGUB, BIANCA Inventor name: KONRAD, JOACHIM |
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Inventor name: SCHAEPERKOETTER, MARKUS Inventor name: EICHHOLZ, HELLFRIED Inventor name: SPITZER, KARL-HEINZ Inventor name: KONRAD, JOACHIM Inventor name: SPRINGUB, BIANCA |
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