EP0353402B1 - Verfahren zum Herstellen eines Stahlbandes mit einer Dicke von weniger als 10 mm - Google Patents
Verfahren zum Herstellen eines Stahlbandes mit einer Dicke von weniger als 10 mm Download PDFInfo
- Publication number
- EP0353402B1 EP0353402B1 EP89108232A EP89108232A EP0353402B1 EP 0353402 B1 EP0353402 B1 EP 0353402B1 EP 89108232 A EP89108232 A EP 89108232A EP 89108232 A EP89108232 A EP 89108232A EP 0353402 B1 EP0353402 B1 EP 0353402B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- thickness
- solidified
- cast
- ingot mould
- 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
Links
Images
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
- 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
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- 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
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- 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
-
- 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
- B21B2001/228—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 skin pass rolling or temper 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/18—Vertical rolling pass lines
Definitions
- the invention relates to a method for producing a steel strip with a thickness of less than 10 mm by casting a strand in a cooled continuous mold and then compressing the strand which has not yet solidified and which emerges from the mold until the inner walls of the strand shell which has already solidified are welded.
- the pre-strip produced in the conventional manner is cooled and, after it has completely solidified, divided into pieces of suitable length or wound up into a strip.
- the bundle is heat-treated in a temporary storage furnace and set to a uniform temperature.
- the tape is rolled out in several embroidery. Because of the necessary intermediate storage furnace and the large number of roll stands for rolling out, the effort for rolling thin strips is still great.
- a further disadvantage with such a rolling out after the strip has been heated up is that the strip scales on the surface. This makes perfect hot rolling difficult.
- a method for producing thin strips in a continuous mold in which the strand which has not yet solidified is pressed together by two squeezing rollers forming the mold outlet to such an extent that the inner sides of the solidified strand shells touch one another.
- the thickness of the tape thus produced corresponds to the sum of the thicknesses of the strand shells.
- the mold emerging solidified strand shells can be reduced in thickness immediately after leaving the mold in the same operation by compressing the cast strand with a degree of deformation of more than 40%.
- Such a reduction in thickness can be achieved with a rolling stand arranged at the mold outlet, in particular a horizontally driven four-high stand.
- a thin strip can be produced from the steel rod that has not yet solidified from the mold and can be wound into coils or further processed immediately after appropriate cooling.
- the production of steel strips using the method according to the invention is extremely inexpensive, since no large plants with heating furnaces and roll stands with a corresponding energy requirement are required.
- the various parameters for casting the steel strand on the one hand and for reducing the thickness of the strand shells on the other hand are matched to one another in such a way that the steel strand can be pressed together without breakthroughs and the strand shells can withstand the considerable deformations when reducing the thickness. It has proven to be particularly advantageous if the casting speed and / or the cooling intensity of the mold is controlled in such a way that the steel strand has a strand shell with a thickness of 5-10 mm when it emerges from the mold. In this way it is ensured that the strand shell is resistant enough to withstand the forces occurring during the deformation without the formation of cracks.
- the compressed strand shells are pressed together after the cast strand emerges from the continuous mold at the highest possible temperatures.
- Good results have been achieved if the surface temperature of the cast strand is more than 1100 ° C., preferably 1200 ° C. to 1400 ° C., in particular 1300 ° C. It has been shown that it is advantageous if there is a temperature gradient in the strand shell perpendicular to the strand surface, which is determined by the strand surface temperature and a temperature close to the solidus temperature in the interior of the cast strand. Since all steel grades are highly resilient at a temperature of more than 1200 ° C, cracks in the strand skin during deformation are avoided if the aforementioned temperatures are observed.
- the strand shells For the formation of a particularly good structure of the rolled strip, it is further advantageous to reduce the strand shells with a degree of deformation of 50-80% in thickness when the cast strand is compressed. For some applications and / or for some steel grades, it may be advantageous to improve the surface quality by re-rolling the strips with a degree of deformation of less than 5%. It is also possible to provide the belt with a contour.
- a first reduction in the thickness of the cast strand is already carried out in the continuous mold.
- the strand shells which form on the broad sides of the continuous mold are brought together at least in the central region by a corresponding design of the funnel-shaped region of the continuous mold while the cast strand is being pulled out.
- the cooling of the continuous mold is adjusted in such a way that the formation of the strand shells begins in the funnel-shaped area. so that a strand with a still molten core is formed there. It is important that the strand shell is only formed with a thickness at which a merging is still possible.
- an oscillating mold 2 which consists of a funnel-shaped upper part and a lower part with cooling walls arranged in parallel, the spacing of which is selected according to the thickness of the strand to be cast.
- the solidifying strand shells are already brought together in the funnel-shaped region when the cast strand is pulled out, as a result of which a first reduction in the thickness of the cast strand is achieved.
- a roll stand 3 with which the solidified strand shells are pressed together, welded together and reduced in thickness.
- the rolling stand is, for example, a horizontally arranged four-high stand, the driven work rolls 3a of which can be adjusted by means of hydraulic cylinders for the compression and reduction of the thickness of the strand 10.
- the driven work rolls 3a of which can be adjusted by means of hydraulic cylinders for the compression and reduction of the thickness of the strand 10.
- the diameter d of the work rolls 3a should be between 0.5 and 1 m, while the distance D of the beginning of the area of attack from the lower edge of the mold 2 should be less than 0.5 m.
- the roll stand 3 can be followed by a roll stand 5 behind an arch guide 4, with which the solidified cast strand is trained with a low degree of deformation of about 5%.
- a cooling device 6, scissors 7 and a reel 8 for winding the strip 9 are provided behind the roll stand 5.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89108232T ATE81042T1 (de) | 1988-07-14 | 1989-05-08 | Verfahren zum herstellen eines stahlbandes mit einer dicke von weniger als 10 mm. |
JP50699589A JPH04500478A (ja) | 1988-07-14 | 1989-06-29 | 板厚10mm未満の鋼帯の製造方法 |
BR898907544A BR8907544A (pt) | 1988-07-14 | 1989-06-29 | Processo para a producao de uma fita de aco com uma espessura de menos de 10 mm |
KR1019900700513A KR900701438A (ko) | 1988-07-14 | 1989-06-29 | 두께 10mm이하인 강스트립의 제조방법 |
NZ22985189A NZ229851A (en) | 1988-07-14 | 1989-07-06 | Producing steel strip of less than 10 mm thickness |
AU37946/89A AU620419B2 (en) | 1988-07-14 | 1989-07-07 | Method of producing a steel strip having a thickness of less than 10 mm |
CN 89104780 CN1039371A (zh) | 1988-07-14 | 1989-07-13 | 厚度小于10毫米的钢带的生产方法 |
PT9115789A PT91157B (pt) | 1988-07-14 | 1989-07-13 | Processo para a producao de uma fita de aco com uma espessura inferior a 10 mm |
CA 605581 CA1325326C (en) | 1988-07-14 | 1989-07-13 | Method of producing a steel strip having a thickness of less than 10 mm |
SU4894202 RU2013184C1 (ru) | 1988-07-14 | 1991-01-10 | Способ непрерывного литья стальной полосы толщиной менее 10 мм |
FI910136A FI88591C (fi) | 1988-07-14 | 1991-01-10 | Foerfarande foer framstaellning av ett staolband med en tjocklek under 10 mm |
DK004891A DK4891A (da) | 1988-07-14 | 1991-01-11 | Fremgangsmaade til fremstilling af et staalbaand med en tykkelse paa mindre end 10 mm |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3823861 | 1988-07-14 | ||
DE3823861A DE3823861A1 (de) | 1988-07-14 | 1988-07-14 | Verfahren und anlage zum herstellen eines stahlbandes mit einer dicke von weniger als 10 mm |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0353402A1 EP0353402A1 (de) | 1990-02-07 |
EP0353402B1 true EP0353402B1 (de) | 1992-09-30 |
Family
ID=6358650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89108232A Expired - Lifetime EP0353402B1 (de) | 1988-07-14 | 1989-05-08 | Verfahren zum Herstellen eines Stahlbandes mit einer Dicke von weniger als 10 mm |
Country Status (9)
Country | Link |
---|---|
US (1) | US4962808A (es) |
EP (1) | EP0353402B1 (es) |
KR (1) | KR900701438A (es) |
DD (1) | DD287433A5 (es) |
DE (2) | DE3823861A1 (es) |
ES (1) | ES2035419T3 (es) |
GR (1) | GR3006093T3 (es) |
WO (1) | WO1990000456A1 (es) |
ZA (1) | ZA895014B (es) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5018666A (en) * | 1989-12-01 | 1991-05-28 | Cf&I Steel Corporation | Unitary one quarter mile long railroad rail free of weld seams |
US5503217A (en) * | 1990-07-23 | 1996-04-02 | Davy Mckee (Sheffield) Limited | Method of manufacturing metal strip |
DE4123956C2 (de) * | 1991-07-19 | 1994-07-21 | Thyssen Stahl Ag | Verfahren und Anlage zum Herstellen eines Metallstranges durch Gießen |
EP0535368B1 (de) * | 1991-09-19 | 1996-06-05 | Sms Schloemann-Siemag Aktiengesellschaft | Verfahren und Anlage zur Herstellung von Stahlband |
IT1262116B (it) * | 1993-05-17 | 1996-06-19 | Danieli Off Mecc | Procedimento di prelaminazione controllata per bramme sottili uscenti da colata continua e dispositivo relativo |
US5488987A (en) * | 1991-10-31 | 1996-02-06 | Danieli & C. Officine Meccaniche Spa | Method for the controlled pre-rolling of thin slabs leaving a continuous casting plant, and relative device |
AT398396B (de) * | 1993-02-16 | 1994-11-25 | Voest Alpine Ind Anlagen | Verfahren zum herstellen eines bandes, vorstreifens oder einer bramme |
DE4403049C1 (de) * | 1994-01-28 | 1995-09-07 | Mannesmann Ag | Stranggießanlage und Verfahren zur Erzeugung von Dünnbrammen |
DE4403048C1 (de) * | 1994-01-28 | 1995-07-13 | Mannesmann Ag | Stranggießanlage und Verfahren zur Erzeugung von Rechteck-Dünnbrammen |
DE19529046A1 (de) * | 1995-07-31 | 1997-02-06 | Mannesmann Ag | Verfahren und Einrichtung zum Betreiben einer Stranggießanlage |
AT410522B (de) * | 2001-05-07 | 2003-05-26 | Hulek Anton | Verfahren und stranggiessanlage zum vertikalen stranggiessen eines stahlbandes |
CH697624B1 (de) * | 2005-02-23 | 2008-12-31 | Main Man Inspiration Ag | Walzeinrichtung für ein Inline-Walzen eines durch Bandgiessen, insbesondere Zweirollen-Bandgiessen hergestelltes Stahlband. |
MX2007012433A (es) * | 2005-04-07 | 2007-11-09 | Giovanni Arvedi | Proceso y sistema para fabricar tiras y laminas de metal sin solucion de continuidad entre el moldeo y el laminado continuo. |
CN101683709B (zh) * | 2008-09-27 | 2012-11-14 | 宝山钢铁股份有限公司 | 薄带连铸连续生产中口径焊管的方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT266362B (de) * | 1966-04-22 | 1968-11-11 | Boehler & Co Ag Geb | Verfahren und Vorrichtung zur Herstellung von streckverformten Erzeugnissen aus hochschmelzenden Metallen, insbesondere aus unlegierten oder legierten Stählen mit verbesserten Qualitätseigenschaften |
GB1199805A (en) * | 1967-04-20 | 1970-07-22 | British Iron Steel Research | Continuous Casting |
DE3400220A1 (de) * | 1984-01-05 | 1985-07-18 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Kokille zum stranggiessen von stahlband |
JPS61189850A (ja) * | 1985-02-20 | 1986-08-23 | Nippon Steel Corp | 鋼のスラブ用連続鋳造方法 |
JPH0669605B2 (ja) * | 1986-02-15 | 1994-09-07 | 新日本製鐵株式会社 | 鋳片から金属薄板を直接製造する方法 |
ES2031945T3 (es) * | 1987-04-13 | 1993-01-01 | Thyssen Stahl Aktiengesellschaft | Procedimiento para la fabricacion de una cinta de acero. |
-
1988
- 1988-07-14 DE DE3823861A patent/DE3823861A1/de not_active Withdrawn
-
1989
- 1989-05-08 ES ES198989108232T patent/ES2035419T3/es not_active Expired - Lifetime
- 1989-05-08 EP EP89108232A patent/EP0353402B1/de not_active Expired - Lifetime
- 1989-05-08 DE DE8989108232T patent/DE58902362D1/de not_active Revoked
- 1989-06-29 KR KR1019900700513A patent/KR900701438A/ko not_active Application Discontinuation
- 1989-06-29 WO PCT/EP1989/000742 patent/WO1990000456A1/de active IP Right Grant
- 1989-06-30 ZA ZA895014A patent/ZA895014B/xx unknown
- 1989-07-06 US US07/376,341 patent/US4962808A/en not_active Expired - Fee Related
- 1989-07-12 DD DD89330734A patent/DD287433A5/de not_active IP Right Cessation
-
1992
- 1992-10-27 GR GR920402422T patent/GR3006093T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
DE58902362D1 (de) | 1992-11-05 |
DE3823861A1 (de) | 1990-01-18 |
US4962808A (en) | 1990-10-16 |
ZA895014B (en) | 1990-04-25 |
ES2035419T3 (es) | 1993-04-16 |
DD287433A5 (de) | 1991-02-28 |
KR900701438A (ko) | 1990-12-03 |
EP0353402A1 (de) | 1990-02-07 |
WO1990000456A1 (de) | 1990-01-25 |
GR3006093T3 (es) | 1993-06-21 |
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