EP1192014A1 - Verfahren und einrichtung zum walzen eines walzbandes mit variierender dicke - Google Patents
Verfahren und einrichtung zum walzen eines walzbandes mit variierender dickeInfo
- Publication number
- EP1192014A1 EP1192014A1 EP00947823A EP00947823A EP1192014A1 EP 1192014 A1 EP1192014 A1 EP 1192014A1 EP 00947823 A EP00947823 A EP 00947823A EP 00947823 A EP00947823 A EP 00947823A EP 1192014 A1 EP1192014 A1 EP 1192014A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- wedge
- shaped
- metal strip
- stand
- 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
- 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 programme
- B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
-
- 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
- Y10T29/00—Metal working
- Y10T29/30—Foil or other thin sheet-metal making or treating
-
- 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
- Y10T29/00—Metal working
- Y10T29/30—Foil or other thin sheet-metal making or treating
- Y10T29/301—Method
-
- 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
- Y10T29/00—Metal working
- Y10T29/30—Foil or other thin sheet-metal making or treating
- Y10T29/301—Method
- Y10T29/302—Clad or other composite foil or thin metal making
Definitions
- the invention relates to a method and a device for rolling a metal strip in a rolling mill, the rolling mill having at least two rolling stands, the metal strip having at least two partial regions of different thickness, which are connected to one another via a wedge-shaped or approximately wedge-shaped transition piece, and wherein the Rolling speed of a rolling stand during the rolling of the wedge-shaped or approximately wedge-shaped transition piece as a function of the advance of the rolling stand, especially according to DE-OS 197 49 424, is set.
- DE-OS 197 49 424 teaches a method for reducing rejects during hot rolling of corresponding rolled strips. It is an object of the invention to further improve the quality of the rolled stock in such a procedure.
- the object is achieved according to the invention by a method according to claim 1 or a device for rolling a metal strip in a rolling train according to claim 2, wherein for rolling a metal strip in a rolling train the rolling train has at least two rolling stands, the metal strip having at least two partial areas of different Has thickness, which are connected via a wedge-shaped or approximately wedge-shaped transition piece, and wherein the
- Rolling speed of a rolling stand during rolling of the wedge-shaped or approximately wedge-shaped transition piece in Dependence of the advance of the rolling stand and the temperature of the metal strip is set.
- FIG. 4 target rolling speed profiles taking into account the advance of the rolling stand and the temperature of the metal strip
- FIG. 5 alternative profiles for additional values of the target speed.
- the metal strip 1 shows a metal strip 1 of variable thickness as a result of a change in the pass schedule during rolling.
- the metal strip 1 has an area 4 with the greater thickness, which corresponds to the thickness according to the old pass schedule, and an area 3 of reduced thickness, which corresponds to the thickness according to the new pass schedule.
- the metal strip 1 has a wedge-shaped intermediate piece 2 between the two areas 3 and 4.
- the change in pass schedule generally changes the decreases and outlet thicknesses of all rolling stands. Therefore e.g. According to DE-OS 197 49 424, the rolling stands were switched from the old to the new pass schedule at the right time.
- An adjustment of the target rolling speed m analogy to the procedure according to
- DE-OS 197 49 424 shows FIG 2 for a three-step rolling mill.
- the target values of the rolling speeds v are shown over time t.
- Vll denotes the rolling speed of the first stand, v21 the rolling speed of the second rolling stand and v31 the rolling speed of the third rolling stand.
- 3 shows an additional value ⁇ v L of the desired rolling speed m as a function of time t.
- the scale of the speed is shown larger compared to FIG. 2 and FIG.
- the additional value ⁇ v L for the desired rolling speed is set in such a way that the temperature of the rolled strip corresponds as precisely as possible to a desired target temperature.
- the desired speeds compared to FIG. 2 are changed by the additional value ⁇ v L.
- the result is shown in FIG. 4.
- vl2 denotes the target rolling speed of the first stand, v22 the target rolling speed of the second stand and v32 the target rolling speed of the third stand.
- FIG. 5 shows further possible courses 5, 6, 7, 8 of the additional value ⁇ v.
- the choice of a suitable course 4, 5, 6, 7, 8 for the value ⁇ v L depends on how the desired temperature of the metal strip is set in a suitable manner.
- boundary or ancillary conditions such as load limits of the roller drives, can be taken into account.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19930472 | 1999-07-01 | ||
DE19930472A DE19930472A1 (de) | 1999-07-01 | 1999-07-01 | Verfahren und Einrichtung zum Walzen eines Walzbandes mit variierender Dicke |
PCT/DE2000/002073 WO2001002109A1 (de) | 1999-07-01 | 2000-06-26 | Verfahren und einrichtung zum walzen eines walzbandes mit variierender dicke |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1192014A1 true EP1192014A1 (de) | 2002-04-03 |
EP1192014B1 EP1192014B1 (de) | 2003-09-10 |
Family
ID=7913378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00947823A Expired - Lifetime EP1192014B1 (de) | 1999-07-01 | 2000-06-26 | Verfahren und einrichtung zum walzen eines walzbandes mit variierender dicke |
Country Status (6)
Country | Link |
---|---|
US (1) | US6922878B1 (de) |
EP (1) | EP1192014B1 (de) |
AT (1) | ATE249290T1 (de) |
DE (2) | DE19930472A1 (de) |
RU (1) | RU2246998C2 (de) |
WO (1) | WO2001002109A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104338748B (zh) * | 2013-07-24 | 2016-04-27 | 宝山钢铁股份有限公司 | 一种用于变厚度带材轧制的两道次轧制方法 |
CN108284130A (zh) * | 2017-01-09 | 2018-07-17 | 宝山钢铁股份有限公司 | 一种冷轧变厚度板材的轧制方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56114513A (en) * | 1980-02-16 | 1981-09-09 | Nippon Steel Corp | Changing method for thickness of strip during hot rolling work |
JPS58135711A (ja) * | 1982-02-05 | 1983-08-12 | Toshiba Corp | 連続圧延機の制御方法およびその制御装置 |
JPS5982102A (ja) * | 1982-10-30 | 1984-05-12 | Toshiba Corp | 圧延方法 |
DE19522494C2 (de) * | 1994-07-07 | 1997-06-19 | Siemens Ag | Verfahren zum Walzen eines Metallbandes |
JPH10249427A (ja) * | 1997-03-13 | 1998-09-22 | Sumitomo Metal Ind Ltd | 熱間連続圧延方法 |
EP1035928A1 (de) * | 1997-11-07 | 2000-09-20 | Siemens Aktiengesellschaft | Verfahren und einrichtung zum walzen eines walzbandes mit variierender dicke |
-
1999
- 1999-07-01 DE DE19930472A patent/DE19930472A1/de not_active Ceased
-
2000
- 2000-06-26 AT AT00947823T patent/ATE249290T1/de active
- 2000-06-26 RU RU2002102496/02A patent/RU2246998C2/ru not_active IP Right Cessation
- 2000-06-26 WO PCT/DE2000/002073 patent/WO2001002109A1/de active IP Right Grant
- 2000-06-26 US US10/030,333 patent/US6922878B1/en not_active Expired - Fee Related
- 2000-06-26 EP EP00947823A patent/EP1192014B1/de not_active Expired - Lifetime
- 2000-06-26 DE DE50003659T patent/DE50003659D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0102109A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE249290T1 (de) | 2003-09-15 |
RU2246998C2 (ru) | 2005-02-27 |
US6922878B1 (en) | 2005-08-02 |
DE19930472A1 (de) | 2001-01-11 |
DE50003659D1 (de) | 2003-10-16 |
EP1192014B1 (de) | 2003-09-10 |
WO2001002109A1 (de) | 2001-01-11 |
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