EP1368143B1 - Procede de reglage approprie de la structure superficielle d'un materiau lamine durant un laminage finisseur a froid dans des laminoirs d'ecrouissage - Google Patents

Procede de reglage approprie de la structure superficielle d'un materiau lamine durant un laminage finisseur a froid dans des laminoirs d'ecrouissage Download PDF

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Publication number
EP1368143B1
EP1368143B1 EP02726119A EP02726119A EP1368143B1 EP 1368143 B1 EP1368143 B1 EP 1368143B1 EP 02726119 A EP02726119 A EP 02726119A EP 02726119 A EP02726119 A EP 02726119A EP 1368143 B1 EP1368143 B1 EP 1368143B1
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EP
European Patent Office
Prior art keywords
rolling
skin pass
calculation
stand
stock
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
Application number
EP02726119A
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German (de)
English (en)
Other versions
EP1368143A2 (fr
Inventor
Hartmut Pawelski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
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SMS Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1368143A2 publication Critical patent/EP1368143A2/fr
Application granted granted Critical
Publication of EP1368143B1 publication Critical patent/EP1368143B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B1/22—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
    • 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
    • B21B1/227—Surface roughening or texturing
    • 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
    • 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
    • B21B1/24—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 in a continuous or semi-continuous process
    • B21B1/28—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 in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • 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
    • B21B1/30—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 in a non-continuous process
    • B21B1/32—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 in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/36—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 in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
    • 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
    • B21B2261/00—Product parameters
    • B21B2261/14—Roughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/14—Reduction rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/22—Pass schedule
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0239—Lubricating
    • B21B45/0245—Lubricating devices
    • B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
    • B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the invention relates to a method for the targeted adjustment of the surface structure of rolling stock during cold rolling in skin pass rolling stands, whereby a partial transfer of the surface structure of the work rolls to the Rolled stock is done.
  • the rolling stock contains impurities and pronounced yield strengths lead to the formation of flow figures in the subsequent further processing can.
  • the rolling stock of a cold forming subject to a low degree of deformation of only up to 3%.
  • the surface of the rolling stock is then additionally smoothed instead, combined with a deliberate partial transfer of the surface structure the work rolls on the rolling stock to set a certain Surface roughness.
  • This desired surface roughness or surface structure of the rolling stock helps u. a., problems with deep drawing (abrasion and Adhesive wear due to metallic contact as well as uncontrolled Flow) and to avoid inadequate paintability.
  • the transfer of the surface structure of the work rolls to the rolling stock is determined by a variety of rolling parameters as well as by the rolling stock thickness, the initial roughness of the rolling stock, the roughness of the work rolls, the Roughing speed and the rerolling temperature decisively influenced.
  • the object of the invention is to provide a method by which a vote of the individual parameters relevant to rolling is enabled, so that a prediction of the coefficient of friction in the roll gap and the change in Surface of the rolling stock by re-rolling (skin passaging) and based on it a presetting of the rolling parameters is made possible.
  • the task set is for a multi-stand skin pass mill with the characteristic Features of claim 1 solved in that with the help of a tribological model for the mathematical description of the Friction in the roll gap changes the roughness of the rolling stock in the rolling process of a single or multi-stand, preferably two-stand Skin pass mill in an optimization calculation with variation of the rolling parameters calculated taking into account the existing machine limit and the results obtained for presetting at least a portion of those for Calculation used rolling parameters can be used.
  • FIGS. 1 to 4 The typical interplay of the partial models is shown in FIGS. 1 to 4, required for an entire tribological model of the roll gap are.
  • FIG. 1 shows a vertical section through a roll gap 1, in which between upper work roll 2 and lower work roll (not shown) themselves the rolled strip 3 is located.
  • the rolling direction runs in the illustration shown in the direction of the arrow 4 from left to right.
  • emulsion 5 In support of Rolling process are the surfaces of the work rolls 2 and the rolling belt wetted with an emulsion 5, which is due to the pressure increase in the gusset enriched with oil between the rolling belt 3 and the work roll 2.
  • This one with oil Enriched emulsion 6 is now together with the rolled strip in the course of the rolling 3 carried through the roll gap 1 from left to right.
  • FIG. 4 in which the development of the coefficient of friction ⁇ (Fig. 2), the Development of the bearing component T of the surface roughness (Fig. 3) and the development of the normal pressure P in the roll gap (FIG. 4) as a function of this roll gap coordinate WSK are shown below the rolled spar representation 1 arranged that the roll gap coordinates WSK correspond to each other.
  • an inlet wedge forms, causing a pressure increase 7 of the Lubricant (oil-enriched suspensions 6) due to hydrodynamic Effects occur (approximately from roll gap coordinate WSK -10 mm to approximately -8 mm) that lasts until the even yield stress minus the retraction stress is reached and the tape becomes plastic.
  • the lubricant film layer can be used, the supporting component T (see Fig. 3) - this is the relationship between microscopic contact area the roughness peaks from belt 3 and work roll 2 to the macroscopic Contact area - calculate at the inlet in a partial model.
  • This model describes the development of the surface roughness (starting from point 8) in a Roll gap coordinate WSK from about -8 mm to about point 9 for a roll gap coordinate WSK of about +2 mm) and the associated increase of the load-bearing component T when passing through the roll gap 1.
  • the settings of the example calculation were dependent on the rolling speed v made so that the tape at all speeds behind scaffold 2 has a constant roughness.
  • the overall degree of addressing (Sum of the skin pass degrees D of stand 1 (G1) and stand 2 (G2)) kept constant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
  • Laminated Bodies (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Claims (5)

  1. Procédé pour le réglage ciblé de la structure de surface d'un produit laminé lors du laminage à froid dans des cages de laminage de dressage, un transfert partiel de la structure de surface des cylindres de travail (2) sur le produit de laminage (3) ayant lieu, caractérisé en ce qu'on calcule, à l'aide d'un modèle tribologique pour la description mathématique des rapports de frottement dans la fente de laminage (1), la modification de la rugosité du produit laminé (3) dans le procédé de laminage d'un train de dressage à une ou plusieurs cages, de préférence à deux cages, dans un calcul d'optimisation avec variation des paramètres de laminage en tenant compte des limites existantes des machines et on utilise les résultats obtenus pour le préréglage d'au moins une partie des paramètres de laminage utilisés pour le calcul.
  2. Procédé selon la revendication 1, caractérisé en ce que le modèle tribologique est constitué par des modèles partiels reliés les uns aux autres, qui permettent entre autres de réaliser les calculs suivants :
    liaison du pourcentage de portée (T) à l'indice de frottement (µ) (modèle de frottement)
    augmentation du pourcentage de portée (T) lors du passage dans la fente de laminage (1) - développement de la rugosité de surface (Ra) comme fonction des coordonnées de la fente de laminage (WSK)
    calcul du profil de la pression de laminage, c'est-à-dire le développement de la pression normale P en fonction des coordonnées de la fente de laminage (WSK).
  3. Procédé selon la revendication 2, caractérisé en ce que pour le réglage d'un degré de dressage constant (D) à une qualité de surface constante, en particulier une rugosité de bande (Ra) constante, on tient en outre en particulier compte des paramètres de laminage suivants :
    répartition des degrés de dressage (D) individuels
    traction entre les cages (Z)
    traction de la bobineuse
    force de laminage obtenue (K)
    vitesse de laminage, en particulier la phase de démarrage et de freinage (v)
    pour le calcul du préréglage dans le modèle mathématique tribologique.
  4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce que le calcul du modèle tribologique est réalisé de telle manière que le produit de laminage (3) présente une rugosité (Ra) constante à toutes les vitesses de laminage (v) en aval de la dernière cage.
  5. Procédé selon la revendication 1, 2, 3 ou 4, caractérisé en ce que le calcul du modèle tribologique est réalisé de telle manière que le degré de dressage total, c'est-à-dire la somme des degrés de dressage D des différentes cages, reste constant.
EP02726119A 2001-03-03 2002-02-28 Procede de reglage approprie de la structure superficielle d'un materiau lamine durant un laminage finisseur a froid dans des laminoirs d'ecrouissage Expired - Lifetime EP1368143B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10110323A DE10110323A1 (de) 2001-03-03 2001-03-03 Verfahren zur gezielten Einstellung der Oberflächenstruktur von Walzgut beim Kaltnachwalzen in Dressier-Walzgerüsten
DE10110323 2001-03-03
PCT/EP2002/002118 WO2002070160A2 (fr) 2001-03-03 2002-02-28 Procede de reglage approprie de la structure superficielle d'un materiau lamine durant un laminage finisseur a froid dans des laminoirs d'ecrouissage

Publications (2)

Publication Number Publication Date
EP1368143A2 EP1368143A2 (fr) 2003-12-10
EP1368143B1 true EP1368143B1 (fr) 2004-11-10

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EP02726119A Expired - Lifetime EP1368143B1 (fr) 2001-03-03 2002-02-28 Procede de reglage approprie de la structure superficielle d'un materiau lamine durant un laminage finisseur a froid dans des laminoirs d'ecrouissage

Country Status (16)

Country Link
US (1) US6948346B2 (fr)
EP (1) EP1368143B1 (fr)
JP (1) JP2004529772A (fr)
KR (1) KR100840980B1 (fr)
CN (1) CN1308094C (fr)
AT (1) ATE281897T1 (fr)
AU (1) AU2002256630B2 (fr)
BR (1) BR0207450B1 (fr)
CA (1) CA2439306C (fr)
CZ (1) CZ298959B6 (fr)
DE (2) DE10110323A1 (fr)
ES (1) ES2231688T3 (fr)
MX (1) MXPA03007922A (fr)
RU (1) RU2286218C2 (fr)
WO (1) WO2002070160A2 (fr)
ZA (1) ZA200305676B (fr)

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CN102744268A (zh) * 2012-07-03 2012-10-24 中冶南方（武汉）信息技术工程有限公司 一种确定单机架可逆冷轧机压下分配的方法

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JP4811858B2 (ja) * 2006-03-27 2011-11-09 大同メタル工業株式会社 青銅合金と鋼のクラッド材の製造方法
US8322178B2 (en) * 2006-12-18 2012-12-04 Jfe Steel Corporation Method for performing temper rolling on steel strip and method for manufacturing high tensile-strength cold rolled steel sheet
JP2009062977A (ja) * 2007-08-15 2009-03-26 Rohr Inc 線形音響ライナー
RU2455090C1 (ru) * 2011-02-10 2012-07-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Способ дрессировки тонколистовой холоднокатаной оцинкованной стали
SI2572807T1 (sl) * 2011-09-22 2014-10-30 Constantia Teich Gmbh Postopek za izdelavo aluminijeve folije z integriranimi varnostnimi značilnostmi
RU2492947C1 (ru) * 2012-03-01 2013-09-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" Способ дрессировки стальных отожженных полос
RU2535841C1 (ru) * 2013-08-26 2014-12-20 Александр Иванович Трайно Способ производства низкоуглеродистой стали
RU2596566C1 (ru) * 2015-02-17 2016-09-10 Публичное акционерное общество "Северсталь" (ПАО "Северсталь") Способ холодной прокатки полос
RU2596565C1 (ru) * 2015-06-09 2016-09-10 Публичное акционерное общество "Северсталь" (ПАО "Северсталь") Способ производства горячеоцинкованного проката
CN106955897B (zh) * 2016-01-11 2019-05-24 上海梅山钢铁股份有限公司 适用于热连轧机组末机架出口带钢表面粗糙度预报方法
CN108280272B (zh) * 2018-01-05 2020-07-31 北京科技大学 一种冷轧过程毛化工作辊表面粗糙度的预测方法
CN108733901A (zh) * 2018-05-02 2018-11-02 燕山大学 一种双平整机组以粗糙度控制为目标的工艺参数优化方法

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Publication number Priority date Publication date Assignee Title
CN102744268A (zh) * 2012-07-03 2012-10-24 中冶南方（武汉）信息技术工程有限公司 一种确定单机架可逆冷轧机压下分配的方法
CN102744268B (zh) * 2012-07-03 2014-06-11 中冶南方（武汉）信息技术工程有限公司 一种确定单机架可逆冷轧机压下分配的方法

Also Published As

Publication number Publication date
CZ298959B6 (cs) 2008-03-19
WO2002070160A3 (fr) 2002-10-24
CA2439306A1 (fr) 2002-09-12
AU2002256630B2 (en) 2007-04-26
CN1494464A (zh) 2004-05-05
KR20030076720A (ko) 2003-09-26
DE50201517D1 (de) 2004-12-16
KR100840980B1 (ko) 2008-06-24
US6948346B2 (en) 2005-09-27
DE10110323A1 (de) 2002-09-05
BR0207450A (pt) 2004-06-01
EP1368143A2 (fr) 2003-12-10
ATE281897T1 (de) 2004-11-15
CA2439306C (fr) 2010-05-18
RU2003129449A (ru) 2005-02-10
BR0207450B1 (pt) 2010-06-29
ES2231688T3 (es) 2005-05-16
CN1308094C (zh) 2007-04-04
JP2004529772A (ja) 2004-09-30
MXPA03007922A (es) 2004-05-24
US20040069381A1 (en) 2004-04-15
ZA200305676B (en) 2003-09-12
CZ20032378A3 (cs) 2004-02-18
WO2002070160A2 (fr) 2002-09-12
RU2286218C2 (ru) 2006-10-27

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