WO2000054900A1 - Reglage de planeite permettant d'obtenir une bande a froid plane - Google Patents

Reglage de planeite permettant d'obtenir une bande a froid plane Download PDF

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Publication number
WO2000054900A1
WO2000054900A1 PCT/DE2000/000831 DE0000831W WO0054900A1 WO 2000054900 A1 WO2000054900 A1 WO 2000054900A1 DE 0000831 W DE0000831 W DE 0000831W WO 0054900 A1 WO0054900 A1 WO 0054900A1
Authority
WO
WIPO (PCT)
Prior art keywords
strip
distribution
temperature
flatness
stresses
Prior art date
Application number
PCT/DE2000/000831
Other languages
German (de)
English (en)
Inventor
Folker Haase
Wolfgang Sauer
Original Assignee
Sms Demag Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7901905&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2000054900(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sms Demag Ag filed Critical Sms Demag Ag
Priority to DE50000828T priority Critical patent/DE50000828D1/de
Priority to AU47416/00A priority patent/AU4741600A/en
Priority to JP2000604963A priority patent/JP2003504206A/ja
Priority to AT00929223T priority patent/ATE228401T1/de
Priority to EP00929223A priority patent/EP1161313B1/fr
Priority to BR0009025-5A priority patent/BR0009025A/pt
Priority to KR1020017011711A priority patent/KR20010112335A/ko
Publication of WO2000054900A1 publication Critical patent/WO2000054900A1/fr

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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B21B2261/21—Temperature profile

Definitions

  • the invention relates to a method for rolling a rolled strip in a strip mill with at least two roll stands or a single stand, each with upper and lower optionally adjustable work rolls, which are supported, if necessary, directly or via intermediate rolls on support rolls and in which at least one stitch is used to change the condition of the rolled strip is rolled, a target stress distribution or any target unevenness form is specified for the rolled strip and compared with the actually achieved stress distribution, and available mechanically or physically effective actuators are used in such a way that the difference between the predetermined and the actually achieved stress distribution is as large as possible is minimized.
  • the flatness measurement of cold rolled strip is usually done using
  • Flatness measuring rollers which measure the current tension distribution over the bandwidth. The measurement is usually carried out on the outlet side of the roll stand, where average strip temperatures between 80 and 160 ° C occur. The same applies analogously to other metals such as aluminum or copper.
  • the contour of the roll gap should be controlled so that the
  • Band flatness or a specific form of flatness is retained or is achieved.
  • the measured variable is the stress distribution in the warm band, which is associated with the temperature-induced stress described (in the example above, more than 25 N / mm 2 ).
  • a voltage component corresponding to the temperature-induced voltage, but with the opposite sign is additionally superimposed in the cooled band of the target unevenness form.
  • target stress distributions or target non-flatness shapes could in principle also be specified for a given product together with a given rolling or special cooling strategy in such a way that the cooled product is sufficiently flat.
  • search for the required objective functions or non-flatness forms is a complex empirical one
  • Cooling lubricant flows and the larger surface area / volume ratio at the strip edge, especially when wound up, as a result of which the temperature usually drops towards the strip edge.
  • the degree of deformation when rolling thin steel strips is usually higher at the strip edge because of the embedding of the rolled material in the roller, and nevertheless the temperature at the edge is lower overall due to the effects just described.
  • the aim of the present invention is to find a method for flatness control with which it is no longer necessary to distinguish between the measurable flatness in the warm state immediately behind the roll gap and the different cold uneveness forms of the cooled bundles for different products and rolling strategies, and with the warm state the same flatness or non-flatness shapes can be specified.
  • the strip temperature distribution over the strip width is also detected, and from this the tension distribution is calculated, which would occur after the strip had cooled down if the strip was in the warm state with the one behind Roll gap existing temperature distribution would be stress-free, and that this temperature-induced stress distribution is used to correct the actually achieved stress before it is compared with the target non-flatness form.
  • Formulation of the target function for flatness can be done in such a way that the best possible flatness of the cooled covenant is achieved directly.
  • the invention does not use the temperature measurement as a measurement variable directly linked to the unevenness (this task is performed by the tension measuring roller), but according to the technological knowledge of the Unplanarity causes as a supplementary correction quantity to the tensile stress in the hot strip, which can now be measured directly, so that the control can reach cold strip with a defined flatness in each individual case.
  • the strip is computationally broken down into strips in the running direction, conveniently, but not necessarily with a strip width, as specified by the tension measuring roller used. In many technically executed cases this is approx. 52 mm and usually also corresponds to the division of the nozzles on the chilled beam. For each of these strips i, an average temperature T is determined from the temperature signals. If the temperature signals are not in one - in the specified
  • Example - given a 52 mm division an interpolation must first be made to this strip division.
  • an average temperature T m is calculated over the entire bandwidth.
  • the method according to the invention has further advantages: By eliminating the inspection of the cooled coil, the determination of target unevenness for the hot strip is considerably simplified. Scattered cold unevenness due to temperature fluctuations are avoided. Differences in target unevenness for different products are reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electrotherapy Devices (AREA)
  • Outside Dividers And Delivering Mechanisms For Harvesters (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de laminage d'une bande d'acier dans une voie de laminage de bandes comprenant au moins deux cages de laminoir ou une cage individuelle avec respectivement des cylindres de travail supérieurs et inférieurs éventuellement réglables. Ces cylindres de travail s'appuient éventuellement directement ou via des cylindres intermédiaires sur des cylindres d'appui. Au moins une passe est laminée pour modifier l'état de la bande d'acier. On détermine pour la bande d'acier une répartition de tension cible ou une forme de non planéité cible quelconque et on la compare avec la répartition de tension réellement obtenue. On utilise les organes de réglage d'action mécanique ou physique disponibles pour réduire au minimum la différence entre la répartition de tension prédéterminée et celle réellement obtenue. Non seulement la répartition de tension propre dans la bande chaude mais aussi la répartition de température sur la largeur de bande sont détectées et la répartition de tension est déterminée par calculateur. Si la bande à l'état chaud est sans tension avec la répartition de température existante derrière l'écartement des cylindres, la répartition de tension calculée s'arrête après refroidissement de la bande. Cette répartition de tension induite par la température est utilisée pour la correction de la tension réellement obtenue avant que cette dernière soit comparée à la forme de non planéité cible.
PCT/DE2000/000831 1999-03-15 2000-03-14 Reglage de planeite permettant d'obtenir une bande a froid plane WO2000054900A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE50000828T DE50000828D1 (de) 1999-03-15 2000-03-14 Planheitsregelung zur erzielung von planem kaltband
AU47416/00A AU4741600A (en) 1999-03-15 2000-03-14 Control of surface evenness for obtaining even cold strip
JP2000604963A JP2003504206A (ja) 1999-03-15 2000-03-14 平らな冷帯板を得るための平坦度制御
AT00929223T ATE228401T1 (de) 1999-03-15 2000-03-14 Planheitsregelung zur erzielung von planem kaltband
EP00929223A EP1161313B1 (fr) 1999-03-15 2000-03-14 Reglage de planeite permettant d'obtenir une bande a froid plane
BR0009025-5A BR0009025A (pt) 1999-03-15 2000-03-14 Regulação de planeza para a obtenção de fitasplanas laminadas a frio
KR1020017011711A KR20010112335A (ko) 1999-03-15 2000-03-14 균일한 냉간 스트립을 얻기 위한 표면 균일도 제어 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19912796A DE19912796A1 (de) 1999-03-15 1999-03-15 Planheitsregelung zur Erzielung von planem Kaltband
DE19912796.4 1999-03-15

Publications (1)

Publication Number Publication Date
WO2000054900A1 true WO2000054900A1 (fr) 2000-09-21

Family

ID=7901905

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/000831 WO2000054900A1 (fr) 1999-03-15 2000-03-14 Reglage de planeite permettant d'obtenir une bande a froid plane

Country Status (11)

Country Link
EP (1) EP1161313B1 (fr)
JP (1) JP2003504206A (fr)
KR (1) KR20010112335A (fr)
CN (1) CN1343146A (fr)
AT (1) ATE228401T1 (fr)
AU (1) AU4741600A (fr)
BR (1) BR0009025A (fr)
DE (2) DE19912796A1 (fr)
ES (1) ES2182801T3 (fr)
TR (1) TR200102682T2 (fr)
WO (1) WO2000054900A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100843964B1 (ko) * 2006-12-22 2008-07-04 주식회사 포스코 압연강판 선단부 휨 방지방법
CN101362154B (zh) * 2008-09-28 2010-06-23 东北大学 一种板带轧制中测量料卷卷径、带宽的装置及其方法
CN101507975B (zh) * 2009-03-20 2012-01-04 燕山大学 双机架ucm平整机组带钢表面色差缺陷综合治理方法
CN101623707B (zh) * 2009-08-05 2011-05-25 燕山大学 连轧机板形标准曲线设计方法
JP4918155B2 (ja) 2010-09-28 2012-04-18 三菱日立製鉄機械株式会社 熱延鋼帯の製造装置及び製造方法
CN105689405B (zh) * 2016-01-28 2018-02-02 燕山大学 一种冷轧带材在线目标板形的智能设定方法
CN108416171A (zh) * 2018-04-03 2018-08-17 中民筑友有限公司 工艺轮廓设计图生成方法、系统、装置及可读存储介质

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2927769A1 (de) * 1979-07-10 1981-02-05 Schloemann Siemag Ag Verfahren und anlage zur planwalzung von bandmaterial aus stahl und nichteisenmetall
JPS57156821A (en) * 1981-03-24 1982-09-28 Toshiba Corp Controlling method for shape
JPS6021113A (ja) * 1983-07-15 1985-02-02 Nippon Steel Corp 熱間ストリツプ圧延における形状制御方法
JPH02207909A (ja) * 1989-02-06 1990-08-17 Sumitomo Metal Ind Ltd 熱間圧延材のオンラインでの形状測定方法
JPH02255209A (ja) * 1989-03-30 1990-10-16 Nippon Steel Corp 板の温間または冷間圧延における形状制御方法
JPH03285707A (ja) * 1990-03-30 1991-12-16 Kobe Steel Ltd 熱間圧延時の板クラウンの制御方法
JPH04100618A (ja) * 1990-08-21 1992-04-02 Nippon Steel Corp 板圧延における形状制御方法
JPH04300008A (ja) * 1991-03-28 1992-10-23 Nippon Steel Corp 板内幅方向温度分布制御法
JPH0615321A (ja) * 1992-06-30 1994-01-25 Kawasaki Steel Corp 厚板圧延における形状制御方法
EP0850704A1 (fr) * 1996-12-23 1998-07-01 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour laminer une bande

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735022A1 (de) * 1987-06-02 1988-12-22 Escher Wyss Ag Verfahren und vorrichtung zum walzen von metallbaendern

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2927769A1 (de) * 1979-07-10 1981-02-05 Schloemann Siemag Ag Verfahren und anlage zur planwalzung von bandmaterial aus stahl und nichteisenmetall
JPS57156821A (en) * 1981-03-24 1982-09-28 Toshiba Corp Controlling method for shape
JPS6021113A (ja) * 1983-07-15 1985-02-02 Nippon Steel Corp 熱間ストリツプ圧延における形状制御方法
JPH02207909A (ja) * 1989-02-06 1990-08-17 Sumitomo Metal Ind Ltd 熱間圧延材のオンラインでの形状測定方法
JPH02255209A (ja) * 1989-03-30 1990-10-16 Nippon Steel Corp 板の温間または冷間圧延における形状制御方法
JPH03285707A (ja) * 1990-03-30 1991-12-16 Kobe Steel Ltd 熱間圧延時の板クラウンの制御方法
JPH04100618A (ja) * 1990-08-21 1992-04-02 Nippon Steel Corp 板圧延における形状制御方法
JPH04300008A (ja) * 1991-03-28 1992-10-23 Nippon Steel Corp 板内幅方向温度分布制御法
JPH0615321A (ja) * 1992-06-30 1994-01-25 Kawasaki Steel Corp 厚板圧延における形状制御方法
EP0850704A1 (fr) * 1996-12-23 1998-07-01 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour laminer une bande

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 263 (M - 181) 22 December 1982 (1982-12-22) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 142 (M - 388) 18 June 1985 (1985-06-18) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 501 (M - 1043) 2 November 1990 (1990-11-02) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 002 (M - 1065) 7 January 1991 (1991-01-07) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 119 (M - 1225) 25 March 1992 (1992-03-25) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 335 (M - 1283) 21 July 1992 (1992-07-21) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 114 (M - 1377) 9 March 1993 (1993-03-09) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 217 (M - 1594) 19 April 1994 (1994-04-19) *

Also Published As

Publication number Publication date
EP1161313A1 (fr) 2001-12-12
TR200102682T2 (tr) 2002-04-22
ATE228401T1 (de) 2002-12-15
KR20010112335A (ko) 2001-12-20
JP2003504206A (ja) 2003-02-04
AU4741600A (en) 2000-10-04
DE50000828D1 (de) 2003-01-09
BR0009025A (pt) 2001-12-26
EP1161313B1 (fr) 2002-11-27
DE19912796A1 (de) 2000-10-12
CN1343146A (zh) 2002-04-03
ES2182801T3 (es) 2003-03-16

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