EP1109638A1 - Verfahren zur herstellung belastungsoptimierter stahlbänder - Google Patents
Verfahren zur herstellung belastungsoptimierter stahlbänderInfo
- Publication number
- EP1109638A1 EP1109638A1 EP99942925A EP99942925A EP1109638A1 EP 1109638 A1 EP1109638 A1 EP 1109638A1 EP 99942925 A EP99942925 A EP 99942925A EP 99942925 A EP99942925 A EP 99942925A EP 1109638 A1 EP1109638 A1 EP 1109638A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- rollers
- steel
- rolls
- thickness
- 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
-
- 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
-
- 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
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- 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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/24—Automatic variation of thickness according to a predetermined program
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2205/00—Particular shaped rolled products
- B21B2205/02—Tailored blanks
Definitions
- the invention has for its object to provide a method for producing load-optimized steel strips, which allows both a direct use of the steel strips and their further forming without the disadvantages described in cold rolling.
- the invention thus relates to a method for producing load-optimized steel strips with a thickness that changes continuously in the longitudinal direction of the strip.
- a method for producing load-optimized steel strips with a thickness that changes continuously in the longitudinal direction of the strip is characterized according to the invention in that the steel strip is produced by casting between two cooled rolls with a variable passage gap, the cooling of the rolls acting on the molten steel cast into the gusset formed by the rolls depending on the path of the continuous cast strip and so that the thickness of the steel strip is changed such that the steel strip receives a length-related change in thickness of 10 to 40%.
- a steel strip with a homogeneous structure can be produced over its length of different thickness.
- Such a strip offers the best prerequisites for further shaping treatment, be it by hot rolling or, in particular, by cold rolling. If the strip is cold rolled, constant degrees of deformation can be achieved without any problems.
- the cooling of the rollers can be influenced by their contact time with the molten steel. Specifically, this can be done by adjusting the circumferential speed of the rollers and / or via the melt pool level. Alternatively, however, the cooling can also be influenced by the heat flow between the rollers and the molten steel. Specifically, this can be done via the surface structure of the rollers and / or an inert gas atmosphere and / or casting oil.
- the thickness of the belt is influenced by the cooling of the rollers and thus by the strand shells of the belt that form, a simple adjustment of the supporting force is appropriate. This is because the rollers can be subjected to constant to slightly increasing support force. If the strip is to become thicker, the cooling is increased with the result of thicker strand shells. This means that the rollers recede and form a larger passage gap. Conversely, the support rollers adjust when the cooling is reduced and the strand shells become thinner. In any case, it is ensured in this way that the strand shells in the so-called “kissing point”, that is, the opposite apex points of the rolls, contact each other and weld to one another.
- the cast strip If the cast strip is to be further reduced in thickness, it can be hot rolled.
- the structure of the strip can be influenced by this and in particular by cold rolling and possible recrystallization annealing.
- the invention will be with reference to an A us.beispiel for a suitable for the present process apparatus illustrated in the drawings explained in more detail.
- Two oppositely driven, cooled rollers 1, 2 form a passage gap between them. Above the passage gap, they form a gusset into which 3 molten steel is poured from a casting container. The molten steel solidifies in the areas adjacent to the cooled rollers 1, 2, so that strand shells 4, 5 form which meet at the narrowest point of the gap in the so-called “kissing point” 6.
- the strand shells 4, 5 weld to one another Volume 7, which is pulled in the direction of an arrow Z.
- the distance between the rollers 1, 2 is variable.
- strand shells 4, 5 of different thickness are formed via the cooling of the rollers 1, 2 exerted on the molten steel.
- the cooling can be influenced by the heat flow from the cooled rollers 1, 2 on the molten steel.
- segmented rollers 1, 2 are shown, the segments of which can have a different surface structure in the segments. However, they could also be cooled to different degrees.
- the cooling can also be influenced by changing the inert gas that forms the atmosphere under which the casting takes place.
- the casting oil which can be located between the roller shells and the melt, influences the he follows.
- the bath level can thus be influenced quickly by means of an immersion body 8 which acts as a displacement.
- the immersion body should be adiabatic, especially ceramic.
- the peripheral speed of the rollers 1, 2. the cooling is influenced by the contact time of the rollers 1, 2 with the melt. A reduction in the peripheral speed corresponds to a longer contact time, so that the strand shells become thicker, while by increasing the peripheral speed, the contact time is shorter and the strand shells are thinner.
- the distance between the rollers 1, 2 can be adjusted by actuators, not shown.
- the actuators work with a constant or slightly increasing support force at an increased distance.
- the setting of the correct distance is particularly simple because the width of the passage gap is automatically set in this case depending on the thickness of the strand shells 4, 5. Basically, with a rigid stand a large ⁇ K for the rolling force corresponds to a small ⁇ S for the thickness of the strip and with a soft stand a small ⁇ K corresponds to a large ⁇ S.
- the strip 7 leaving the strip casting device with a strip thickness gradually increasing and decreasing in the strip running direction has a homogeneous structure and can then be used immediately or by means of others Formings such as hot or cold rolling can be changed. In any case, because of the homogeneous structure, it offers optimal conditions for further processing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19840898 | 1998-09-08 | ||
| DE19840898A DE19840898C2 (de) | 1998-09-08 | 1998-09-08 | Verfahren zum Herstellen belastungsoptimierter Stahlbänder |
| PCT/EP1999/006303 WO2000013820A1 (de) | 1998-09-08 | 1999-08-27 | Verfahren zur herstellung belastungsoptimierter stahlbänder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1109638A1 true EP1109638A1 (de) | 2001-06-27 |
| EP1109638B1 EP1109638B1 (de) | 2002-05-02 |
Family
ID=7880163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99942925A Expired - Lifetime EP1109638B1 (de) | 1998-09-08 | 1999-08-27 | Verfahren zur herstellung belastungsoptimierter stahlbänder |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6524408B1 (de) |
| EP (1) | EP1109638B1 (de) |
| JP (1) | JP2002524261A (de) |
| KR (1) | KR20010074990A (de) |
| CN (1) | CN1316929A (de) |
| AT (1) | ATE216930T1 (de) |
| AU (1) | AU5625199A (de) |
| BR (1) | BR9913520A (de) |
| DE (2) | DE19840898C2 (de) |
| ES (1) | ES2177315T3 (de) |
| WO (1) | WO2000013820A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPQ291199A0 (en) * | 1999-09-17 | 1999-10-07 | Bhp Steel (Jla) Pty Limited | Strip casting |
| DE10107027A1 (de) * | 2001-02-15 | 2002-09-12 | Thyssenkrupp Stahl Ag | Verfahren zum Herstellen von metallischen Bändern mit Abschnitten unterschiedlicher Materialeigenschaften |
| ITUD20010058A1 (it) * | 2001-03-26 | 2002-09-26 | Danieli Off Mecc | Procedimento di taglio di un nastro in fase di colata |
| US7404431B2 (en) * | 2002-06-04 | 2008-07-29 | Nucor Corporation | Production of thin steel strip |
| US7938164B2 (en) * | 2002-06-04 | 2011-05-10 | Nucor Corporation | Production of thin steel strip |
| CN101342594B (zh) * | 2007-07-12 | 2011-04-06 | 北京中科三环高技术股份有限公司 | 一种合金薄片的制备装置 |
| KR101109521B1 (ko) * | 2009-10-14 | 2012-01-31 | 현대로템 주식회사 | 철도차량용 산소 공급장치 |
| DE102009051673B3 (de) * | 2009-11-03 | 2011-04-14 | Voestalpine Stahl Gmbh | Herstellung von Galvannealed-Blechen durch Wärmebehandlung elektrolytisch veredelter Bleche |
| DE102010000292B4 (de) | 2010-02-03 | 2014-02-13 | Thyssenkrupp Steel Europe Ag | Metallband hergestellt aus Stahl mit unterschiedlichen mechanischen Eigenschaften |
| EP2418031A1 (de) * | 2010-08-13 | 2012-02-15 | Siemens Aktiengesellschaft | Verfahren zum Herstellen von Metallband mittels einer Gießwalzverbundanlage, Steuer- und/oder Regeleinrichtung für eine Gießwalzverbundanlage und Gießwalzverbundanlage |
| KR101482461B1 (ko) * | 2013-12-20 | 2015-01-13 | 주식회사 포스코 | 에지 품질이 우수한 오스테나이트계 스테인리스 박판의 제조방법 |
| GB2522873A (en) * | 2014-02-07 | 2015-08-12 | Siemens Vai Metals Tech Gmbh | A method of forming tailored cast blanks |
| CN114799107B (zh) * | 2022-04-14 | 2024-06-21 | 河钢乐亭钢铁有限公司 | 一种提高扇形段辊缝精度的拉杆补偿控制方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3118986C1 (de) * | 1981-05-08 | 1983-03-10 | Mannesmann AG, 4000 Düsseldorf | Verfahren zum Verstellen der Seitenwaende einer Kokille |
| JPS61266159A (ja) * | 1985-05-21 | 1986-11-25 | Mitsubishi Heavy Ind Ltd | 薄板連続鋳造装置の運転方法 |
| JPH0252150A (ja) * | 1988-08-16 | 1990-02-21 | Ishikawajima Harima Heavy Ind Co Ltd | 双ロール式連続鋳造方法 |
| WO1990011149A1 (de) * | 1989-03-23 | 1990-10-04 | Siemens Aktiengesellschaft | Geregelte form für das stranggiessen von stahl |
| BR9505870A (pt) * | 1994-04-04 | 1996-02-21 | Nippon Steel Corp | Método e aparelho de fundição continua de cilindro duplo |
| JPH07276004A (ja) * | 1994-04-11 | 1995-10-24 | Nippon Steel Corp | 双ロール式連続鋳造法における鋳片クラウン及び板厚制御方法 |
-
1998
- 1998-09-08 DE DE19840898A patent/DE19840898C2/de not_active Expired - Lifetime
-
1999
- 1999-08-27 AU AU56251/99A patent/AU5625199A/en not_active Abandoned
- 1999-08-27 CN CN99810700A patent/CN1316929A/zh active Pending
- 1999-08-27 WO PCT/EP1999/006303 patent/WO2000013820A1/de not_active Ceased
- 1999-08-27 ES ES99942925T patent/ES2177315T3/es not_active Expired - Lifetime
- 1999-08-27 DE DE59901359T patent/DE59901359D1/de not_active Expired - Fee Related
- 1999-08-27 US US09/786,230 patent/US6524408B1/en not_active Expired - Fee Related
- 1999-08-27 EP EP99942925A patent/EP1109638B1/de not_active Expired - Lifetime
- 1999-08-27 BR BR9913520-5A patent/BR9913520A/pt not_active IP Right Cessation
- 1999-08-27 KR KR1020017002951A patent/KR20010074990A/ko not_active Withdrawn
- 1999-08-27 JP JP2000568612A patent/JP2002524261A/ja active Pending
- 1999-08-27 AT AT99942925T patent/ATE216930T1/de not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0013820A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19840898C2 (de) | 2000-06-29 |
| AU5625199A (en) | 2000-03-27 |
| BR9913520A (pt) | 2001-06-05 |
| ES2177315T3 (es) | 2002-12-01 |
| DE59901359D1 (de) | 2002-06-06 |
| EP1109638B1 (de) | 2002-05-02 |
| US6524408B1 (en) | 2003-02-25 |
| KR20010074990A (ko) | 2001-08-09 |
| DE19840898A1 (de) | 2000-03-16 |
| CN1316929A (zh) | 2001-10-10 |
| WO2000013820A1 (de) | 2000-03-16 |
| JP2002524261A (ja) | 2002-08-06 |
| ATE216930T1 (de) | 2002-05-15 |
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