EP2501498B1 - Refroidissement et nettoyage de lignes de traitement de bandes - Google Patents

Refroidissement et nettoyage de lignes de traitement de bandes Download PDF

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Publication number
EP2501498B1
EP2501498B1 EP20100796303 EP10796303A EP2501498B1 EP 2501498 B1 EP2501498 B1 EP 2501498B1 EP 20100796303 EP20100796303 EP 20100796303 EP 10796303 A EP10796303 A EP 10796303A EP 2501498 B1 EP2501498 B1 EP 2501498B1
Authority
EP
European Patent Office
Prior art keywords
gas
liquid mixture
liquid
rolling
rolling material
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.)
Not-in-force
Application number
EP20100796303
Other languages
German (de)
English (en)
Other versions
EP2501498A2 (fr
Inventor
Arthur Allerdings
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 Group GmbH
Original Assignee
SMS Siemag 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
Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP2501498A2 publication Critical patent/EP2501498A2/fr
Application granted granted Critical
Publication of EP2501498B1 publication Critical patent/EP2501498B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • 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

Definitions

  • the invention relates to the cooling and cleaning of components in rolling mills.
  • rolling plants are known from the prior art in which a liquid is used for cooling and / or for cleaning the rolls, the rolls and the rolling stock.
  • a liquid is usually used for the lubrication of a roll gap.
  • These are usually emulsions of water and oil.
  • Liquids, especially water have good heat-dissipating properties, which can be further increased by an initial temperature difference relative to the material to be cooled or by the flow rate of the liquids.
  • the cleaning properties are often given in a sufficient degree.
  • a disadvantage is the great moisture or moisture that is present as a result of this method in belt processing plants, especially in the rolling stand and on the rollers, or on the rolling stock.
  • an emulsion as such is that it usually has to have a temperature of at least 50 ° C to 60 ° C, so that it emulsifies sufficiently and has the desired lubricating properties. The necessarily higher temperature of the emulsion is opposed to the cooling. Furthermore, a constant filtration of the emulsion is usually necessary.
  • the international publication discloses WO 2005/120739 a method and a rolling mill for cold rolling of metallic rolling.
  • a nozzle for gaseous media are provided and installed on the other nozzle for liquid treatment media in the rolling stand.
  • individual nozzle rows are directed against the rolling gap or against the rolling stock for lubricating, cleaning and cooling.
  • a minimum quantity lubrication is used. This means that oil is applied in small quantities to the rolling stock.
  • the rolling stock usually has a surface roughness in the micrometer range and the amount, as described in the cited publication, is chosen so that just this roughness is compensated by a thin lubricant film.
  • cryogenic inert gas in particular liquid nitrogen.
  • cryogenic gases as nitrogen on a large scale is expensive. This is due, among other things, to the fact that they are required, on the one hand, in some considerable quantities, in the operation of such a plant and, in addition, cause increased costs for its storage, transport and occupational safety.
  • the publication WO 2009/029659 A1 discloses a method for cooling and cleaning a rolled strip according to the preamble of claim 1.
  • WO 03/051550 A1 discloses a method for cleaning a belt surface by means of two partial beams.
  • One of these rays preferably comprises a liquid, another jet preferably comprises a gas. Both beams are generated separately.
  • the publication WO 03/002277 A1 discloses a method and apparatus for cooling and lubricating rolls of a rolling mill. In this process, inter alia, oil-air mixtures or oil-water-air mixtures are applied as a lubricant.
  • the publication WO 2008/059321 A1 discloses a method and apparatus for cleaning metal bands.
  • two-phase jets are applied to the belt.
  • the patent US 4,344,308 discloses a method for cold rolling and for cleaning steel plates.
  • a cleaning solution is applied to the steel plate, into which also abrasive grains are mixed.
  • Such grains may be formed by iron phosphates, zinc phosphates, calcium phosphates, magnesium phosphates, sand iron powder, iron powder or iron oxides.
  • the invention uses gas and liquid cleaned and cooled at the same time.
  • the disadvantages of pure liquid cooling are overcome, with their biggest disadvantage is that it creates a large amount of moisture or moisture on the rolling or plant components, the quality of the rolling stock and its further processing, or the durability of the plants negative affected.
  • the strip flatness can be improved according to the invention, as can the mechanical properties, such as grain sizes or yield strengths.
  • an improvement in the strip surface produced is also possible, such as allowing for less roughness and greater cleanliness.
  • the process comprises solids in addition to the gas-liquid mixture. Ice crystals or solid phases of other gases or liquids which liquefy and / or evaporate on contact with the rolling stock can further increase the cleaning effect and / or the cooling effect.
  • the cleaning effect is enhanced by a ballistic effect, that is to say by the impact of the solids or particles on the surface of the rolling stock or of the plant component.
  • the phase transitions from solid to liquid and possibly from liquid to gaseous lead to additional temperature reductions of the material to be cooled by the necessary evaporation or sublimation heat in the phase transitions.
  • both the gas and the liquid of the gas-liquid mixture are co-exuded for cooling and cleaning.
  • both the gas and the liquid are applied from a common location to the rolling stock or to a part of the plant.
  • the gas-liquid mixture is emitted by means of a common nozzle or generally by means of a common outlet.
  • a common nozzle or generally by means of a common outlet may be provided.
  • the gas-liquid mixture stream reaches the rolling stock or the plant.
  • a fog out Liquid and gas are applied, that means in particular that are present in the gas droplets of the liquid.
  • air in particular compressed air
  • the cleaning effect and cooling effect can be further improved.
  • water, ethanol, kerosene or oil is used as the liquid of the gas-liquid mixture.
  • kerosene or ethanol increases the cooling and cleaning effect, since these substances evaporate quickly and require phase transformation heat, so that their phase transition from the liquid phase into the gaseous phase for the warm rolling or warm plant components, a significant temperature reduction occurs ,
  • the gas or air of the gas-liquid mixture is set in motion by a fan or a compressor. This can be controlled depending on the specific application, whether the mixture slowly moves in the form of a slowly moving mist on the corresponding material or in the form of a faster moving jet, in particular compressed air jet, meets the object to be cooled and cleaned.
  • a gas mixture is used as the gas of the gas-liquid mixture and / or a liquid mixture is used as the liquid.
  • a plurality of gases or liquids can also be used simultaneously for cooling and cleaning or can be flowed together, which, inter alia, by different phase transition temperatures of the liquids used a more uniform cooling of the material to be cooled can be achieved and not the entire liquid at a certain Temperature evaporates. The quality of the tape can be further increased.
  • the gas-liquid mixture optionally comprises one or more of the following components: gaseous nitrogen, liquid nitrogen, air, argon, water, demineralized water, oil, ethanol, kerosene.
  • the method is carried out in a rolling mill for rolling a metal strip, which comprises at least one pair of rollers or rollers between which the metal strip passes, wherein the cooling and the cleaning and possibly also the lubrication by the gas-liquid mixture on the inlet side a roller and / or on the outlet side of a roll, takes place on the inlet side of the roller pair and / or on the outlet side of the roller pair and / or below the metal strip and / or above the metal strip. Due to the good both cleaning and cooling properties of the method according to the invention, it can be found in particular in many places a rolling mill application. The methods known from the prior art do not allow such a flexible application.
  • the gas-liquid mixture is generated by accelerating the gas or the liquid subsequently introduced into a gas stream before it leaves a common outlet or a common nozzle.
  • FIG. 1 schematically shows an embodiment of the present invention.
  • this illustrated embodiment may not be construed restrictive but only the multiple uses of the method according to the invention should show purely by way of example.
  • outlets 1 to 10 for a gas-liquid mixture for cooling and cleaning a metal strip 17 and / or a rolling mill with rollers 12 to 15 and rollers 16 are shown.
  • the gas-liquid mixture is shown schematically by the black triangles or Sprühfowner.
  • a rolling stand 11 with two support rollers 12, 15 and intermediate work rolls 13, 14 is shown.
  • the work rolls 13, 14 exercise, as usual, a rolling force on the rolling stock 17, which is in accordance with the FIG. 1 moved from left to right.
  • the left side of the frame 11 corresponds to the inlet side of the frame 11, the right side of the frame 11 corresponds to the outlet side.
  • outlets 1 to 10 it is also conceivable to provide an outlet for the gas-liquid mixture only at one of the positions 1 to 10 shown.
  • the outlets 1 to 10 are provided for the gas-liquid mixture at other positions, as they are already known in rolling plants or in casting plants or other belt processing plants.
  • the gas-liquid mixture it is also possible for the gas-liquid mixture to be used for cleaning and cooling as well as possibly for lubrication and surface sealing of machining tools and / or other workpieces of the systems.
  • a gas-liquid mixture is simultaneously emitted through a plurality of said outlets. Regardless, however, it is preferably the case that the gas-liquid mixture is emitted from at least one outlet together.
  • An outlet can, for example, a nozzle be or an outlet opening of a spray bar.
  • the gas-liquid mixture can also be sprinkled or sprayed simultaneously from a row of nozzles, which preferably extends parallel to a roll axis or extends perpendicular to the rolling or casting direction.
  • the gas-liquid mixture may preferably be composed as follows:
  • As the gas of the gas-liquid mixture in particular air, optionally also under pressure, that is compressed air, may be used.
  • the air can be moved by a fan or a compressor.
  • As part of the liquid of the gas-liquid mixture in particular water, ethanol, kerosene or oil are used.
  • the gas-liquid mixture additionally contains solids, in the form of natural solids in the air, such as ice crystals. In addition, other added solids may be included.
  • a gas mixture may be used as the gas of the gas-liquid mixture and / or a liquid mixture may be used instead of a single liquid of the gas-liquid mixture.
  • Other gases and liquids or components or substances used can be, for example, gaseous nitrogen, liquid nitrogen, argon or demineralized water.
  • the construction of corresponding outlets which serve to carry out the method according to the invention is known to the person skilled in the art.
  • the method is applicable to both hot and cold rolling mills.

Landscapes

  • Metal Rolling (AREA)

Claims (7)

  1. Procédé pour le refroidissement et le nettoyage dans un laminoir, dans lequel des composants de l'installation (11, 12, 13, 14, 15) sont refroidis et sont nettoyés de manière simultanée via un mélange gaz-liquide, et aussi bien le gaz que le liquide du mélange gaz-liquide s'écoulent à travers une sortie commune (3, 4, 5, 6, 7, 8) à des fins de refroidissement et de nettoyage, caractérisé en ce que le mélange gaz-liquide contient en outre une phase solide d'air, en particulier des cristaux de glace ; et
    - la sortie commune (3) est disposée du côté entrée d'une cage de laminoir (11) au-dessus du produit laminé (17) et est orientée sur des cylindres de travail (13) au-dessus du produit laminé (17) ; ou
    - la sortie commune (4) est disposée du côté entrée d'une cage de laminoir (11) en dessous du produit laminé (17) et est orientée sur des cylindres de travail (14) en dessous du produit laminé (17) ; ou
    - la sortie commune (5, 6) est disposée du côté sortie d'une cage de laminoir (11) en dessous ou au-dessus du produit laminé (17) et est orientée sur un écartement entre cylindres du laminoir ; ou
    - la sortie commune (7) est disposée du côté sortie d'une cage de laminoir (11) au-dessus du produit laminé (17) et est orientée sur un cylindre de travail (13) disposé au-dessus du produit laminé (17) et sur un cylindre de support (12) disposé au-dessus du produit laminé (17) ; ou
    - la sortie commune (8) est disposée du côté sortie d'une cage de laminoir (11) en dessous du produit laminé (17) et est orientée sur un cylindre de travail (14) disposé en dessous du produit laminé (17) et sur un cylindre de support (15) disposé en dessous du produit laminé.
  2. Procédé selon la revendication 1, dans lequel on utilise pour faire office de gaz du mélange gaz-liquide, de l'air, en particulier de l'air sous pression.
  3. Procédé selon la revendication 1, dans lequel on utilise pour faire office de liquide du mélange gaz-liquide, de l'eau, de l'éthanol, du kérosène ou de l'essence.
  4. Procédé selon la revendication 1, dans lequel on met en mouvement le gaz du mélange gaz-liquide via un ventilateur ou un compresseur.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel on utilise pour faire office de gaz du mélange gaz-liquide, un mélange de gaz ou bien on utilise pour faire office de liquide, un mélange de liquides.
  6. Procédé selon la revendication 1 ou 5, dans lequel le mélange gaz-liquide comprend plusieurs des composants indiqués ci-après : de l'azote gazeux, de l'azote liquide, de l'air, l'argon, de l'eau, de l'eau déminéralisée, de l'essence, de l'éthanol, du kérosène.
  7. Procédé selon la revendication 1, dans lequel on obtient le mélange gaz-liquide par accélération du gaz ou bien on introduit le liquide par la suite dans un courant de gaz avant que le mélange gaz-liquide ne quitte de manière conjointe une sortie (3, 4, 5, 6, 7, 8).
EP20100796303 2009-11-21 2010-11-16 Refroidissement et nettoyage de lignes de traitement de bandes Not-in-force EP2501498B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910054205 DE102009054205A1 (de) 2009-11-21 2009-11-21 Kühlung und Reinigung in Bandprozesslinien
PCT/EP2010/067526 WO2011061165A2 (fr) 2009-11-21 2010-11-16 Refroidissement et nettoyage de lignes de traitement de bandes

Publications (2)

Publication Number Publication Date
EP2501498A2 EP2501498A2 (fr) 2012-09-26
EP2501498B1 true EP2501498B1 (fr) 2015-05-20

Family

ID=43877262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100796303 Not-in-force EP2501498B1 (fr) 2009-11-21 2010-11-16 Refroidissement et nettoyage de lignes de traitement de bandes

Country Status (4)

Country Link
EP (1) EP2501498B1 (fr)
DE (1) DE102009054205A1 (fr)
ES (1) ES2538006T3 (fr)
WO (1) WO2011061165A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011104455B4 (de) 2011-06-08 2013-01-03 Schletter Gmbh Baugruppe eines Ständers für PV-Module, Halteaufsatz und Verfahren zum Montieren der Baugruppe
DE102011104452A1 (de) 2011-06-08 2012-12-13 Schletter Gmbh Ständer für PV-Module
CN102284518A (zh) * 2011-08-18 2011-12-21 中冶南方工程技术有限公司 用于冷轧湿平整生产中的水雾喷射装置
GB2495512B (en) * 2011-10-12 2013-12-11 Siemens Plc Rolling apparatus
CN104438382B (zh) * 2014-11-25 2016-08-24 山东钢铁股份有限公司 一种提高冷轧带钢表面清洁度的方法及其专用设备
EP3461566A1 (fr) * 2017-10-02 2019-04-03 Primetals Technologies Austria GmbH Laminage d'un laminé

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841923B2 (ja) * 1979-07-25 1983-09-16 日本パ−カライジング株式会社 鋼板の清浄処理方法
US6675622B2 (en) * 2001-05-01 2004-01-13 Air Products And Chemicals, Inc. Process and roll stand for cold rolling of a metal strip
DE10131369A1 (de) * 2001-06-28 2003-01-09 Sms Demag Ag Verfahren und Vorrichtung zum Kühlen und Schmieren von Walzen eines Walzgerüstes
AUPR949801A0 (en) * 2001-12-14 2002-01-24 Industrial Automation Services Pty Ltd Process control method and apparatus
DE102004040375A1 (de) 2004-06-09 2005-12-29 Sms Demag Ag Verfahren und Walzgerüst zum Kaltwalzen von metallischem Walzgut, insbesondere von Walzband, mit Düsen für gasförmige oder flüssige Behandlungsmedien
ITMI20062189A1 (it) * 2006-11-15 2008-05-16 Comodo Italia S R L Struttura d'arredo per l'appoggio di almeno una porsona in posizione assisa e-o sdraiata e procedimento per la modifica della sua configurazione
CN101842172A (zh) * 2007-08-28 2010-09-22 气体产品与化学公司 将致冷剂泄放到冷轧机中的工作面上

Also Published As

Publication number Publication date
ES2538006T3 (es) 2015-06-16
DE102009054205A1 (de) 2011-05-26
WO2011061165A3 (fr) 2012-06-14
EP2501498A2 (fr) 2012-09-26
WO2011061165A2 (fr) 2011-05-26

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