EP2750813B2 - Laminoir réversible et procédé de fonctionnement pour un laminoir réversible - Google Patents

Laminoir réversible et procédé de fonctionnement pour un laminoir réversible Download PDF

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Publication number
EP2750813B2
EP2750813B2 EP12742868.8A EP12742868A EP2750813B2 EP 2750813 B2 EP2750813 B2 EP 2750813B2 EP 12742868 A EP12742868 A EP 12742868A EP 2750813 B2 EP2750813 B2 EP 2750813B2
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EP
European Patent Office
Prior art keywords
reversing
rolling
rolling oil
stock
oil
Prior art date
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Application number
EP12742868.8A
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German (de)
English (en)
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EP2750813B1 (fr
EP2750813A1 (fr
Inventor
Konrad Krimpelstätter
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Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP12742868.8A priority Critical patent/EP2750813B2/fr
Publication of EP2750813A1 publication Critical patent/EP2750813A1/fr
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Classifications

    • 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
    • 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
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B21B15/005—Lubricating, cooling or heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0064—Uncoiling the rolled product
    • 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
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the invention relates to an operating method for a reversing, with at least one Reversierwalzgerüst for rolling a rolling stock, wherein the rolling passes in a sequence of stitches with alternating passage direction, the at least one Reversierwalzgerüst and is wound after each stitch by means of acting as a recoil reversing.
  • the invention also relates to the use of a reversing mill according to said operating method.
  • a generic method is eg off JP-A 62009707 known.
  • the rolling stock In a reversing stand or reversing stand, the rolling stock is reduced in thickness in a reciprocating sequence in a sequence of stitches.
  • an oil-water emulsion with an oil concentration of about 0.5% to 5% is used for roll-gap lubrication, roll cooling and roll cleaning. If the oil concentration is increased, the lubricating effect generally increases, that is, the friction in the roll gap is lower, while the cooling effect decreases.
  • the total amount of emulsion per stand is generally applied on the work rolls or on the strip immediately before the roll gap on the upstream side.
  • the volume flow in a cold rolling mill is, for example, 0.8 l per minute and kilowatt-hour drive power.
  • the required amount of lubricant can be adjusted insufficiently in the nip. Namely, there is the problem that the amount of oil provided in the nip for nip lubrication is dictated primarily by the cooling requirements and not by the current lubrication requirements in the nip. It can be assumed that with emulsion lubrication in the nip, the oil concentration is well below 100%, which leads to a reduced lubricating effect. In practice, this means that the rolling oil consumption is significantly higher than the actually required amount of lubricant for lubrication of the roll gap. A targeted influence on the current lubrication and friction conditions is limited in this way possible, for example only on the oil concentration in the emulsion or additives.
  • the invention is based on the object to provide an operating method for a reversing, in which while maintaining a good roll gap lubrication of the rolling oil consumption can be further reduced.
  • the lubricant is not supplied to the inlet side of the roll gap, but the rolling stock is oiled in a previous step during coiling.
  • the lubricant is squeezed by the superimposed layers and made uniform, so that the amount of lubricant can be further reduced.
  • the uniform surface application of the lubricant ensures that, despite the small amount of lubricant, sufficient lubrication in the roll gap is possible.
  • Viewed in the axial direction of the work rolls rule the same friction conditions.
  • the rolling stock therefore undergoes uniform deformation and heating. This has an advantageous effect on the surface quality of the rolling stock, since it has fewer chatter marks.
  • the lubrication can be better adjusted to parameters of the rolling process. Furthermore, there is the advantage that the cooling medium, e.g. Water can be supplied with a low temperature compared to an emulsion lubrication, so that the heat dissipation is better.
  • the cooling medium e.g. Water
  • the conventional roller lubrication when entering the rolling stand is therefore obsolete.
  • the lubricating action is ensured exclusively via the previously oiled, incoming metal strip.
  • the starting material of a Reversiergerüstes comes from a pickling (Kontibeize or Schubbeize), in which the metal strips are oiled after pickling for the purpose of corrosion protection. These oiled belts enter the reversing roll stand as input material for the first pass. After the first stitch, the metal strip is wound up on a reversing reel acting as a reel, and, provided that followed by another stitch is provided - oiled before winding.
  • the rolling oil is applied uniformly over the entire width of the rolling stock in the form of an atomized oil mixture.
  • the rolling oil penetrates well into the roughness of the rolling stock and unfolds in the subsequent rolling a good lubricating effect.
  • the rolling oil is applied in a comparatively small amount of less than 200 ml per minute, preferably in a range of about 50 to 100 ml per minute.
  • FIG. 1 shows in a simplified schematic representation of a reversing mill 1.
  • the rolling stock 5 passes through with alternating passage direction 7 of one or more rolling stands.
  • the reversing mill 1 consists of a single Reversierwalzgerüst 2.
  • each Reversierhaspel 3, 4 is arranged.
  • these Reversierhaspeln 3, 4 once as a reel, once as uncoiler.
  • the cooling of the rolls of the roll stand 2 is carried out with a completely separate from the lubricating medium cooling medium.
  • the cooling medium in the present example is pure water which is sprayed by means of a device 8, for example a row of nozzles, onto the rolls of the reversing roll stand 2.
  • This reversing reel 4 acts as a reel 41.
  • the oiling of the rolling stock takes place in a step upstream of the rolling pass, in which rolling oil is applied to the rolled strip before being wound up. This is done by means of a rolling oil applicator 6, which sprays the rolling oil 9 both on the top and on the underside of the rolled strip 5. As a result, the rolling oil adheres very well to the rough surface of the rolling stock.
  • the rolling oil may be a base oil provided with additives.
  • a suitable rolling oil applicator may be of a different type, e.g. an arrangement of several nozzles in the form of a spray, nozzle or spray bar. Such devices are assumed to be known in the following and are not the subject of the present invention.
  • FIG. 2 now shows the second stitch following stitch one.
  • the passage direction 7 has now reversed, that is, it runs from right to left.
  • the two Reversierhaspeln 3, 4 now rotate in an opposite direction, that is opposite clockwise.
  • Reversing reel 3 now acts as a reel 31.
  • an outlet side corresponding to the changed passage direction now left in FIG. 2
  • rolling oil applicator 6 the oiling of the rolled strip 5.
  • the rolling oil 9 is applied again on both sides of the rolled strip 5.
  • the rolling oil 9 is not mixed with a liquid carrier medium such as water.
  • the roll cooling of the Reversierwalzgerüstes 2 is again with pure water and is separated from the lubrication in the nip.
  • the last stitch is back in FIG. 3 outlined. Again FIG. 3 can be seen, the metal strip is no longer oiled in the last stitch, but the lubrication effect is achieved by the already applied in the previous or already in the penultimate stitch on the surface of the rolled strip and remaining there residual amount of rolling oil. This residual amount of lubricant is sufficient because the thickness decrease of the rolling stock 5 in the last pass is usually very low.
  • the required amount of oil can be significantly reduced in a cold rolling mill. Since the media are separated for lubrication and cooling, the amount of lubricant can be adjusted depending on process variables such as belt speed, rolling force, roller roughness and so on. This differentiated adjustment of the lubrication is of great advantage.
  • the lubrication is decoupled from the cooling, a coolant with a comparatively lower temperature can be used, which improves the cooling effect. As a result, the amount of water required for the cooling can be saved.
  • the emulsion temperature must not be below about 48 ° C, otherwise fungal and bacterial growth will be favored.
  • a metastable or even unstable rolling oil is used, which has a low content of emulsifiers.
  • the metastable or unstable rolling oil can be easily separated from the water and it must be recycled only water in the circulation loop. It is possible to reuse the oil separated from the water.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Claims (10)

  1. Procédé de fonctionnement pour un laminoir réversible comprenant au moins une cage (2) de laminoir réversible pour le laminage d'un produit à laminer (5), le produit à laminer (5) traversant ladite au moins une cage (2) de laminoir réversible en une succession de passes en alternant le sens de passage (7) et étant bobiné après chaque passe au moyen d'une bobineuse réversible (3, 4) faisant office d'enrouleuse (31, 41), caractérisé en ce que lors d'une étape de travail précédente avant de bobiner le produit à laminer (5) sur l'enrouleuse (31, 41), il est procédé à un huilage du produit à laminer (5) pour une lubrification d'emprise de laminage lors de la passe de laminage consécutive à l'étape de travail précédente, consistant à appliquer sur le produit à laminer (5), de sorte à bobiner le produit à laminer et à le huiler sur l'enrouleuse, au moyen d'un dispositif d'application d'huile de laminage (6) agencé entre la au moins une cage (2) de laminoir réversible et l'enrouleuse (31, 41), exclusivement de l'huile de laminage (9) sans eau en tant que fluide porteur, de sorte à obtenir lors de la passe de laminage consécutive à l'étape de travail précédente une lubrification d'emprise de laminage exclusivement par ladite huile de laminage (9) appliquée avant le bobinage.
  2. Procédé de fonctionnement selon la revendication 1, caractérisé en ce que l'huile de laminage (9) est appliquée de façon homogène sous forme de mélange huile/air atomisé sur toute la largeur du produit à laminer (5).
  3. Procédé de fonctionnement selon la revendication 1 ou 2, caractérisé en ce que l'huile de laminage (9) est appliquée en une quantité maximale de 200 ml par minute.
  4. Procédé de fonctionnement selon la revendication 3, caractérisé en ce que l'huile de laminage (9) est appliquée en une quantité comprise entre 50 et 100 ml par minute.
  5. Procédé de fonctionnement selon l'une des revendications 1 à 4, caractérisé en ce qu'avant la dernière et/ou l'avant-dernière passe, aucune huile de laminage (9) n'est appliquée sur le produit à laminer (5).
  6. Laminoir réversible comprenant au moins une cage de laminoir réversible, fonctionnant selon un procédé selon l'une des revendications 1 à 5, un produit à laminer (5) traversant ladite au moins une cage (2) de laminoir réversible en une succession de passes en alternant le sens de passage (7), et comprenant des bobineuses réversibles (3, 4) agencées côté entrée et côté sortie, entre la au moins une cage (2) de laminoir réversible et la bobineuse réversible faisant office d'enrouleuse (31, 41) étant agencé un dispositif d'application d'huile de laminage (6) servant à appliquer une huile de laminage (9) sans eau en tant que fluide porteur, permettant ainsi un huilage du produit à laminer (5) avant de l'enrouler sur l'enrouleuse (31, 41), de sorte à obtenir une action lubrifiante exclusivement par ladite huile de laminage (9) appliquée avant le bobinage.
  7. Laminoir réversible selon la revendication 6, caractérisé en ce que le dispositif d'application d'huile de laminage (6) est adapté pour appliquer l'huile de laminage (9) de façon homogène sous forme de mélange d'huile atomisé sur toute la largeur du produit à laminer (5).
  8. Laminoir réversible selon l'une des revendications 6 ou 7, caractérisé en ce que le dispositif d'application d'huile de laminage (6) est adapté pour appliquer l'huile de laminage (9) en une quantité maximale de 200 ml par minute sur le produit à laminer (5).
  9. Laminoir réversible selon la revendication 8, caractérisé en ce que le dispositif d'application d'huile de laminage (6) est adapté pour appliquer l'huile de laminage (9) en une quantité comprise entre 50 et 100 ml par minute.
  10. Laminoir réversible selon l'une des revendications 6 à 9, caractérisé en ce qu'avant la dernière et/ou l'avant-dernière passe, aucune huile de laminage (9) n'est appliquée sur le produit à laminer (5).
EP12742868.8A 2011-08-30 2012-07-26 Laminoir réversible et procédé de fonctionnement pour un laminoir réversible Active EP2750813B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12742868.8A EP2750813B2 (fr) 2011-08-30 2012-07-26 Laminoir réversible et procédé de fonctionnement pour un laminoir réversible

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11179241 2011-08-30
EP12742868.8A EP2750813B2 (fr) 2011-08-30 2012-07-26 Laminoir réversible et procédé de fonctionnement pour un laminoir réversible
PCT/EP2012/064651 WO2013029886A1 (fr) 2011-08-30 2012-07-26 Laminoir réversible et procédé de fonctionnement d'un laminoir réversible

Publications (3)

Publication Number Publication Date
EP2750813A1 EP2750813A1 (fr) 2014-07-09
EP2750813B1 EP2750813B1 (fr) 2016-02-10
EP2750813B2 true EP2750813B2 (fr) 2019-11-06

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ID=46603936

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EP12742868.8A Active EP2750813B2 (fr) 2011-08-30 2012-07-26 Laminoir réversible et procédé de fonctionnement pour un laminoir réversible

Country Status (5)

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US (1) US9815101B2 (fr)
EP (1) EP2750813B2 (fr)
CN (1) CN103889605B (fr)
RU (1) RU2605740C2 (fr)
WO (1) WO2013029886A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2813298A1 (fr) * 2013-06-10 2014-12-17 Centre de Recherches Métallurgiques asbl - Centrum voor Research in de Metallurgie vzw Procédé et dispositif de refroidissement de bande améliorée dans un laminoir à froid
EP3061535B1 (fr) 2015-02-27 2019-02-27 Primetals Technologies Austria GmbH Dispositif de bobineuse doté d'un refroidissement asymétrique de la bande bobinée
EP3238843A1 (fr) 2016-04-29 2017-11-01 Primetals Technologies Austria GmbH Procede de laminage d'un produit de laminage
IT201900005442A1 (it) * 2019-04-09 2020-10-09 Danieli Off Mecc Processo di laminazione a freddo di un prodotto in alluminio e relativo impianto di laminazione a freddo
EP3733317B1 (fr) * 2019-04-30 2022-10-05 Primetals Technologies Austria GmbH Laminage d'un laminé
CN210040395U (zh) * 2019-07-22 2020-02-07 宁德时代新能源科技股份有限公司 用于极片补锂的装置
RU2769334C1 (ru) * 2021-04-26 2022-03-30 Публичное Акционерное Общество "Новолипецкий металлургический комбинат" Способ холодной прокатки тонких стальных полос
CN115090673A (zh) * 2022-06-21 2022-09-23 首钢智新迁安电磁材料有限公司 一种带钢轧制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156809A (en) † 1981-03-25 1982-09-28 Sumitomo Metal Ind Ltd Controlling method for concentration of rolling mill lubricant for cold rolling mill
JPS6152901A (ja) † 1984-08-21 1986-03-15 Kawasaki Steel Corp 高度の表面光沢を有する金属ストリツプの冷間圧延方法および装置
JPH11156045A (ja) † 1997-11-28 1999-06-15 Cosmo Ec Kk 麻雀点数管理装置
JP3815075B2 (ja) † 1998-08-25 2006-08-30 住友金属工業株式会社 オーステナイト系ステンレス鋼板の冷間圧延方法

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JPS629707A (ja) 1985-07-04 1987-01-17 Daido Steel Co Ltd 冷間圧延用ロ−ルク−ラント装置
JP2722105B2 (ja) 1989-04-14 1998-03-04 日新製鋼株式会社 ステンレス鋼帯の冷間圧延時の油模様発生防止方法
SU1738404A1 (ru) * 1990-05-31 1992-06-07 Магнитогорский металлургический комбинат им.В.И.Ленина Способ подготовки стальной полосы к прокатке
RU2030937C1 (ru) * 1992-06-05 1995-03-20 Научно-производственное предприятие "Минимакс" Способ эксплуатации технологических смазочно-охлаждающих средств при производстве проката
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RU2233722C1 (ru) * 2002-12-09 2004-08-10 Открытое акционерное общество "Новолипецкий металлургический комбинат" Промасливающая машина
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156809A (en) † 1981-03-25 1982-09-28 Sumitomo Metal Ind Ltd Controlling method for concentration of rolling mill lubricant for cold rolling mill
JPS6152901A (ja) † 1984-08-21 1986-03-15 Kawasaki Steel Corp 高度の表面光沢を有する金属ストリツプの冷間圧延方法および装置
JPH11156045A (ja) † 1997-11-28 1999-06-15 Cosmo Ec Kk 麻雀点数管理装置
JP3815075B2 (ja) † 1998-08-25 2006-08-30 住友金属工業株式会社 オーステナイト系ステンレス鋼板の冷間圧延方法

Also Published As

Publication number Publication date
WO2013029886A1 (fr) 2013-03-07
US9815101B2 (en) 2017-11-14
CN103889605B (zh) 2017-01-18
RU2605740C2 (ru) 2016-12-27
EP2750813B1 (fr) 2016-02-10
CN103889605A (zh) 2014-06-25
RU2014112211A (ru) 2015-10-10
EP2750813A1 (fr) 2014-07-09
US20140238093A1 (en) 2014-08-28

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