EP2195125B2 - Spray lubrication unit and method for rolling cylinders - Google Patents

Spray lubrication unit and method for rolling cylinders Download PDF

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Publication number
EP2195125B2
EP2195125B2 EP08837441.8A EP08837441A EP2195125B2 EP 2195125 B2 EP2195125 B2 EP 2195125B2 EP 08837441 A EP08837441 A EP 08837441A EP 2195125 B2 EP2195125 B2 EP 2195125B2
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Prior art keywords
oil
rolling
line according
lubrication
bar
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German (de)
French (fr)
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EP2195125B1 (en
EP2195125A1 (en
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Bart Vervaet
Hugo Uijtdebroeks
Griet Lannoo
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Centre De Recherches Metallurgiques Asbl - Centrum
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Centre de Recherches Metallurgiques CRM ASBL
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    • 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

Definitions

  • the present invention relates to a rolling line comprising a new lubrication system for the rolls or rolls of a hot or cold rolling line.
  • the invention also relates to the method implemented on the installation.
  • the document EP 1 512 469 A1 relates to an in-line lubrication plant for rolling rolls, preferably hot rolled, of a metal strip, preferably steel, by spraying or atomizing a lubricant (11) on a target comprising said rolls and / or said strip, preferably in the vicinity of the right-of-way, by means of one or more controllable air atomizers (10), each atomizer (10) comprising an inlet for the air (12) or the inert gas under pressure and a inlet for the oil (11) in an adapter followed by a mixing chamber (132 ') and an outlet nozzle for the atomized mixture.
  • an emulsion which is a suspension of oil droplets in water, with an oil concentration typically varying between 0.3 and 2%. It can be either a stable emulsion or an unstable emulsion prepared online.
  • the emulsion is applied directly to the work rolls by means of a spray device located after the squeegees in order to apply the oil to a dry surface.
  • a spray device located after the squeegees in order to apply the oil to a dry surface.
  • the interest of a good lubrication of the working rollers is not only limited to the problem of roller performance (surface degradation) but is also related to the forces and rolling torques to be applied and consequently to the required power consumption.
  • the need for efficient lubrication is further enhanced with the use of HSS type rollers characterized by a higher coefficient of friction than traditional rolls, with steeper steels and lower thickness, under increased production and in conditions of surface quality imposed by the more severe customers.
  • the coefficient of friction depends on many factors such as the application technology used, the amount of oil, the nature of the oil, the flow rate and the concentration of the oil emulsion , the surface temperature of the strip or rolls, the nature and condition of the rollers (roughness, degradation, scale, water film thickness, etc.), the rolling force and speed, the reduction, the grade and the surface condition of the product, etc.
  • the lubrication efficiency can be very different from one rolling train to another and from one cage to another in the same train.
  • the lubrication efficiency is a function of the lubricant supply technology, the nature of the lubricant (mineral, ester-based, etc.) and the amount thereof. . Satisfactory results are obtained by spraying oil in surface distributions ("plate-out") of 0.1 to 1 g / m 2 .
  • the device for spraying the oil emulsion is either a venturi, the suction of the oil being carried out by the depression created by moving water in the main tube, or a conventional flat sprinkler device for injecting a stable emulsion, for example a static mixer ("static tube mixer") where an oil injection is carried out in a tube zone where the shear (speed gradient) is increased by means of the presence of "obstacles".
  • static mixer static mixer
  • injectors whose number is selected according to the bandwidth to be lubricated (3 to 7 injectors for a band up to 2 meters wide).
  • the document EP-A-1,193,004 discloses a cold rolling lubrication process comprising the steps of: providing a rolling oil emulsion using a first oil supply device in the form of an emulsion supplied to a cylinder and a steel strip in a closed circuit mode and a second device for supplying the emulsion only on the front and rear surfaces of the steel strip.
  • the rolling oil is added to an emulsifier of the same type and concentration as those used for the first device, with an average particle size control so that they are larger than in the first device .
  • the emulsion produced by the second device not adhered to the band is recovered at the same time as the emulsion produced by the first device.
  • the document WO-A-03 / 002,277 discloses an installation for cooling and lubricating working rolls in a rolling stand, separately comprising a cooling water spray bar and a lubricating oil spray bar, an oil / air mixture, oil / water or oil / air / water, or fat.
  • WO-A-03/000 437 discloses an installation and a method of lubricating rolling rolls, wherein an oil-in-water emulsion in adjustable proportions is homogeneously prepared in a mixer and supplied to different spray areas whose distribution is variable in width. Each zone corresponds to a row of nozzles, each nozzle being controlled by at least one relay valve.
  • JP-A-2001 / 179,313 discloses a lubricant application device, either in the form of undiluted oil or emulsion, having a network structure for uniform adhesion of the lubricant to a working roller in a rolling mill stand.
  • the patent US-A-3,933,660 proposes a lubricating reducing oil for hot rolling of copper and its alloys comprising 1000 parts by weight of water, 6 to 200 parts by weight of anionic surface activator of carboxylic acid, sulfate or phosphate type and 0.8 to 200 parts by weight of at least one compound containing a hydroxyl group of alcohol type, alkylene glycol or ether glycol.
  • Rolling oil provides copper and its alloys with lubrication, the ability to remove an oxide film and the ability to prevent the formation of oxide film by spraying between the rolling roll and the hot rolling strip.
  • JP-A-2003 / 129,079 discloses a lubricating composition for the plastic working of a metal comprising a carboxylate, a metal acid phosphate or a metal alkylphosphonate.
  • the document JP-A-55 151 093 discloses a lubricating process in cold rolling a strip coated with a polar organic compound wherein an oil emulsion and a composition comprising a polar organic compound such as stearic acid are sprayed.
  • the excess oil emulsion is removed by wringing after formation of an oil layer adsorbed on the surface of the strip.
  • WO-A-2005/071 050 discloses a self-emulsifying lubricant for metal working obtained by maleation of vegetable or animal triglyceride oil.
  • the present invention aims to provide a solution that overcomes the disadvantages of the state of the art and in particular those related to the use of oil / water emulsions.
  • the invention aims to obtain a high homogeneity of cylinder lubrication, adaptable and controllable both upward and downward.
  • the invention also aims a precise and economical use of lubricant, very low flow, for the same efficiency.
  • the invention also aims to achieve an installation that does not require an electricity supply at the cage, or the heating of the oil.
  • Another object of the invention is easy maintenance, in particular by preventing the obstruction of the pipes and the nozzles.
  • the invention also aims to eliminate the risk of fire and the reduction of pollution by the lubricant.
  • the invention has the additional object of providing sprinklers directly mounted on a common air collector, in the form of a compact system, which feeds them and also serves as mechanical support.
  • Another object of the invention is to provide an installation comprising either a common pump with several nozzles per zone, or several dosing pumps for several nozzles, with a single pump per nozzle.
  • the object of the invention is the use of an oil without pressure in the nozzle, which is of adjustable flow rate.
  • a first object of the present invention relates to a rolling line of a metal strip comprising an in-line lubrication system for rolling rolls, preferably hot, preferably steel, by spraying or atomizing a lubricant on a target comprising said cylinders and / or said band, preferably in the vicinity of the right-of-way, by means of a ramp of controllable air atomizers, arranged parallel to said cylinders and supplied with air or inert gas under pressure, characterized in that each atomizer comprises an inlet for air or inert gas under pressure and a pure oil inlet without pressure in an adapter followed by a mixing chamber, and an outlet nozzle for the atomized mixture.
  • Another object of the present invention relates to a method of in-line lubrication of rolling rolls, preferably hot rolling, of a metal strip, preferably steel, by spraying or atomizing a lubricant by means of the aforementioned installation, characterized in that a cloud of fine droplets of pure oil under air pressure is generated at the outlet of the atomizers of the ramp, with a maximum oil flow of 200 ml. / min, the oil entering without pressure in the atomizer, the air pressure being less than 0.5 bar.
  • the figure 1 is a perspective representation (with its detail view) of an air atomizer ramp for spraying pure oil on rolling rolls, according to the present invention.
  • the figure 2 schematically represents a detail view in section of an atomizer of the ramp of the figure 1 .
  • the figure 3 schematically represents a general view of the lubrication system according to a first preferred embodiment of the invention.
  • the figure 4 represents a real example of atomization pattern obtained with the installation according to the present invention.
  • the figure 5 schematically represents a general view of the lubrication system according to a second preferred embodiment of the invention.
  • the figure 6 schematically represents a modular distribution valve (MDV) as used in the installation of the figure 5 .
  • MDV modular distribution valve
  • the figure 7 graphically represents the evolution of the total rolling force over time in a static pipe installation, respectively using rolling oil and rapeseed oil as lubricant and for different "flat-out" values.
  • the figure 8 graphically represents the evolution of the total rolling force over time in an installation according to the figure 5 , with use of rapeseed oil.
  • the present invention is based on the principle of air atomization to spray very small amounts of pure oil on the working cylinders. Due to the very low concentration of pure oil used, a flat-out distribution of 0 to 0.6 g / m 2 can be achieved.
  • the spray is formed by the intimate mixture of oil and air from two separate pipes, the air and the oil being "mixed" just after the exit of the small oil inlet tube. To obtain a perfect spray pattern, the air pressure and the oil flow rate were perfectly adjusted to the type of application considered, so as to avoid the formation of fog.
  • the oil is not under pressure, that is to say that it has a pressure as low as possible, but is supplied to the nozzles in a very small amount by a (micro) pump, in combination or not with a distributor.
  • the oil flows through a small tube and the risk of obstruction of the nozzle is non-existent because its orifice has an opening whose size is of the order of a millimeter. No oil heating is required because the spray pattern and the size of the droplets are controlled only by the pressure of the air.
  • the lubricating device comprises a ramp 2 of air atomizers 3 arranged parallel to the rolling cylinder 1.
  • the atomizers 3 are arranged along this ramp 2, perpendicular thereto, preferably equidistant from each other .
  • the distance between the ramp and the roll is 100-200 mm.
  • the figure 2 shows the detail of an atomizer 3, made of stainless steel.
  • This comprises a pressurized air inlet 4, an unpressurized oil inlet 5, these two inlets being located at a specially designed adapter 6 followed by a mixing chamber 6 'where oil and air, and a nozzle 7 for the output of the atomized mixture.
  • the adapter 6 located after the air collector 4 thus allows the air transport and the oil supply through the inlet 5. It also plays a role of attachment of the nozzle (support).
  • a dozen atomizers 3 for a ramp 2 allowing a treatment width of 2 m, with for example a minimum oil flow rate of 50 ml / minute and a maximum of 150 ml / minute.
  • the preferred values of oil flow will be determined for each specific rolling mill as a function of the rotational speed of the rolls (up to 20 m / s). It is preferable to use natural oil (and therefore no "carrier” medium) at a pressure as low as possible (ideally 0 bar), with a viscosity in the range of 20-50 mPa.s.
  • the system will be adjusted to obtain a "platform-out" of the order of 0.4 g / m 2 , which optimizes the force and the rolling torque. Pressure air can not exceed 0.4-0.45 bar, otherwise the formation of fog.
  • the orifice of the nozzles must not be very small, it is typically 1.5 mm ⁇ , hence the risk of obstruction is low, as already mentioned.
  • the figure 3 shows a general view of a lubrication installation according to this first embodiment of the invention, comprising a ramp of controllable atomizers, as described on the figure 2 .
  • Each of the atomizers 3 of the ramp 2 is controlled at a distributor 9 having as many metering micropumps as atomizers on the ramp.
  • Each micropump of the distributor 9 is fed by an oil tank 11 and controlled individually, via an oil flow controller (12), by a PC 10 (eg 15 outputs, 0-40 Hz).
  • the ramp 2 is supplied by a pressurized air line 13.
  • the air pressure value is communicated to the PC for regulation by a pressure gauge 14.
  • the speed of the cylinder 1 is also communicated to the PC by a measuring device 15.
  • additional On / Off valve (not shown) can be installed on the oil line supplying the distributor 9, just before it, for reasons of ease of use of the installation.
  • the example of atomization drawing shown on the figure 4 has an extension of 18 cm, at a distance of 20 cm from the jets.
  • the extension is 13.5 cm if the nozzles are 15 cm (oil flow 6 ml / min and air pressure 0.3 bar with an air flow of 10 l / min per nozzle) .
  • the ramp 2 of air atomizers is supplied with oil from the tank 11 in parallel lines provided with metering pumps 16 and each terminating, through an inlet 17, to a distribution valve modular 8 (MDV, for modular divider valve , see figure 6 ) at one end of the ramp 2 and whose multiple outputs 18 feed the atomizers 3 located on the ramp 2.
  • MDV distribution valve modular 8
  • An additional On / Off valve can be installed on the parallel lines of oil supplying the distributor 8 , just before this one, for reasons of ease of use of the installation.
  • FIG. figure 6 An example of an MDV 8 distributor, with six outlets 11, marketed by Lubriquip Inc., Cleveland, Ohio (USA), is shown on FIG. figure 6 .
  • a sequential feeding cycle of the different exit doors 18 is ensured by the movement of the pistons 19.
  • the use of several valves makes it possible to divide the cylinder to be lubricated in 2 or 3 zones, for example A, B, C.
  • the supply air 13 is provided at one end of the ramp 2 (0.3 bar).
  • a dosing pump and an MDV distributor are used to feed each atomizer 3 of the zone.
  • the oil coming from the central tank 11 is conveyed to a metering pump 16.
  • the minimum pressure depends on the pressure drop of the valve MDV. Generally a pressure of 2 bar is necessary, but, if necessary, the pressure can be increased to 10-15 bar.
  • the oil will be filtered, to the extent that impurities arriving in the MDV valves are likely to disrupt the operation.
  • Comparative roller lubrication comparative tests using two different types of lubricants were carried out.
  • the two technologies used are respectively emulsified using the principle of the static tube, according to the state of the art and that using the pure oil according to the present invention.
  • the static tube has 4 jets located at a distance of 20-25 cm from the rollers to be lubricated.
  • the speed of the rollers is between 0.3 and 0.5 m / s and the reduction rate is 50%. Spraying on the rollers creates a watering area that is 15 cm wide.
  • a theoretical "flat-out" of 0.6 g / m 2 corresponds to a flow rate of 5 ml / min (ie 1.25 ml / min per nozzle) at a speed of 0.3 m / s and at a flow rate of 8 ml / min at a speed of 0.5 m / s.
  • a theoretical "flat-out" of 4.2 g / m 2 corresponds to a flow rate of 32 ml / min (ie 8 ml / min per nozzle) at a speed of 0.3 m / s.
  • a theoretical "flat-out" of 2.5 g / m 2 corresponds to a flow rate of 32 ml / min (ie 8 ml / min per nozzle) at a speed of 0.5 m / s.
  • the figure 7 shows the variation of the rolling force 21 as a function of time (and the moving average over 250 periods, 22), for each type of oil and, as the case may be, at different "plate-out" values (of 0, 6 to 4.2 g / m 2 ).
  • the speed of the rollers 23 is also shown.
  • the oil distributor was used with a dosing pump and 8 outlets (8 sprinklers).
  • the total flow to the distributor was 60 ml / min (7.5 ml / nozzle), which corresponds to a theoretical "out-of-the-box" of 0.4 g / m 2 .

Description

Objet de l'inventionObject of the invention

La présente invention se rapporte à une ligne de laminage comprenant une nouvelle installation de lubrification des cylindres ou rouleaux d'une ligne de laminage à chaud ou à froid.The present invention relates to a rolling line comprising a new lubrication system for the rolls or rolls of a hot or cold rolling line.

L'invention se rapporte également au procédé mis en oeuvre sur l'installation.The invention also relates to the method implemented on the installation.

Arrière-plan technologique et état de la techniqueTechnological background and state of the art

Le document EP 1 512 469 A1 se rapporte à une installation de lubrification en ligne de cylindres de laminage, de préférence à chaud, d'une bande métallique, de préférence en acier, par pulvérisation ou atomisation d'un lubrifiant (11) sur une cible comprenant lesdits cylindres et/ou ladite bande, de préférence au voisinage de l'emprise, au moyen d'un ou plusieurs atomiseurs à air contrôlables (10), chaque atomiseur (10) comprenant une entrée pour l'air (12) ou le gaz inerte sous pression et une entrée pour l'huile (11) dans un adaptateur suivi d'une chambre de mélange (132') ainsi qu'un gicleur de sortie pour le mélange atomisé.The document EP 1 512 469 A1 relates to an in-line lubrication plant for rolling rolls, preferably hot rolled, of a metal strip, preferably steel, by spraying or atomizing a lubricant (11) on a target comprising said rolls and / or said strip, preferably in the vicinity of the right-of-way, by means of one or more controllable air atomizers (10), each atomizer (10) comprising an inlet for the air (12) or the inert gas under pressure and a inlet for the oil (11) in an adapter followed by a mixing chamber (132 ') and an outlet nozzle for the atomized mixture.

Il est connu que le procédé de lubrification des cylindres de laminoir en sidérurgie est souvent réalisé par pulvérisation (ou vaporisation) d'une émulsion, qui est une suspension de gouttelettes d'huile dans l'eau, avec une concentration en huile variant typiquement entre 0,3 et 2 %. Il peut s'agir soit d'une émulsion stable, soit d'une émulsion instable préparée en ligne.It is known that the method of lubricating rolling mill rolls in the iron and steel industry is often carried out by spraying (or vaporising) an emulsion, which is a suspension of oil droplets in water, with an oil concentration typically varying between 0.3 and 2%. It can be either a stable emulsion or an unstable emulsion prepared online.

Généralement, l'émulsion est appliquée directement sur les rouleaux de travail au moyen d'un dispositif de pulvérisation situé après les raclettes dans le but d'appliquer l'huile sur une surface sèche. Ce mode d'application assure une meilleure répartition de l'huile et par conséquent contribue à la réduction de la consommation en huile.Generally, the emulsion is applied directly to the work rolls by means of a spray device located after the squeegees in order to apply the oil to a dry surface. This method of application ensures a better distribution of the oil and therefore contributes to the reduction of oil consumption.

L'intérêt d'une bonne lubrification des rouleaux de travail n'est pas simplement limité au problème de performance des rouleaux (dégradation de surface) mais est également lié aux forces et couples de laminage à appliquer et partant à la consommation électrique nécessaire. La nécessité d'avoir une lubrification performante est encore accrue avec l'utilisation de rouleaux de type HSS caractérisés par un coefficient de frottement plus élevé que les rouleaux traditionnels, avec des aciers plus durs et d'épaisseur plus faible, dans des conditions d'augmentation de la production et dans des conditions de qualité de surface imposées par les clients plus sévères.The interest of a good lubrication of the working rollers is not only limited to the problem of roller performance (surface degradation) but is also related to the forces and rolling torques to be applied and consequently to the required power consumption. The need for efficient lubrication is further enhanced with the use of HSS type rollers characterized by a higher coefficient of friction than traditional rolls, with steeper steels and lower thickness, under increased production and in conditions of surface quality imposed by the more severe customers.

Dans les conditions de lubrification, le coefficient de frottement dépend de nombreux facteurs tels que la technologie d'application utilisée, la quantité d'huile, la nature de l'huile, la vitesse de flux et la concentration de l'émulsion d'huile, la température de la surface de la bande ou des cylindres, la nature et l'état des rouleaux (rugosité, dégradation, calamine, épaisseur du film d'eau, etc.), la force et la vitesse de laminage, la réduction, la nuance et l'état de surface du produit, etc. Ainsi, l'efficacité de lubrification peut être très différente d'un train de laminage à l'autre et d'une cage à l'autre dans le même train.In lubrication conditions, the coefficient of friction depends on many factors such as the application technology used, the amount of oil, the nature of the oil, the flow rate and the concentration of the oil emulsion , the surface temperature of the strip or rolls, the nature and condition of the rollers (roughness, degradation, scale, water film thickness, etc.), the rolling force and speed, the reduction, the grade and the surface condition of the product, etc. Thus, the lubrication efficiency can be very different from one rolling train to another and from one cage to another in the same train.

En laboratoire, on a déterminé que l'efficacité de lubrification est fonction de la technologie de fourniture de lubrifiant, de la nature du lubrifiant (minéral, à base d'ester, etc.) et de la quantité de celui-ci mise en oeuvre. Des résultats satisfaisants sont obtenus en pulvérisant de l'huile dans des répartitions surfaciques ("plate-out") de 0,1 à 1 g/m2.In the laboratory, it has been determined that the lubrication efficiency is a function of the lubricant supply technology, the nature of the lubricant (mineral, ester-based, etc.) and the amount thereof. . Satisfactory results are obtained by spraying oil in surface distributions ("plate-out") of 0.1 to 1 g / m 2 .

Conventionnellement, le dispositif de pulvérisation de l'émulsion d'huile est soit un venturi, l'aspiration de l'huile étant réalisée par la dépression créée par de l'eau en mouvement dans le tube principal, soit un dispositif à gicleurs plats conventionnels pour l'injection d'une émulsion stable, par exemple un mélangeur statique ("static tube mixer") où l'on procède à une injection d'huile dans une zone de tube où le cisaillement (gradient de vitesse) est augmenté grâce à la présence d'"obstacles". Le venturi ou le "static tube mixer" est combiné à une série d'injecteurs dont le nombre est sélectionné en fonction de la largeur de bande à lubrifier (3 à 7 injecteurs pour une bande allant jusqu'à 2 mètres de large).Conventionally, the device for spraying the oil emulsion is either a venturi, the suction of the oil being carried out by the depression created by moving water in the main tube, or a conventional flat sprinkler device for injecting a stable emulsion, for example a static mixer ("static tube mixer") where an oil injection is carried out in a tube zone where the shear (speed gradient) is increased by means of the presence of "obstacles". The venturi or the "static tube mixer" is combined with a series of injectors whose number is selected according to the bandwidth to be lubricated (3 to 7 injectors for a band up to 2 meters wide).

Le document EP-A-1 193 004 décrit un procédé de lubrification pour laminage à froid comprenant les étapes de : fourniture d'une émulsion d'huile de laminage utilisant un premier dispositif de fourniture de l'huile sous forme d'une émulsion fournie à un cylindre et une bande d'acier selon un mode en circuit fermé ainsi qu'un deuxième dispositif de fourniture de l'émulsion seulement sur les surfaces avant et arrière de la bande d'acier. Dans le deuxième dispositif, l'huile de laminage est ajoutée à un émulsifiant de même type et même concentration que ceux utilisés pour le premier dispositif, avec un contrôle de taille moyenne de particules pour que celles-ci soient plus grandes que dans le premier dispositif. L'émulsion produite par le second dispositif n'ayant pas adhéré à la bande est récupérée en même temps que l'émulsion produite par le premier dispositif.The document EP-A-1,193,004 discloses a cold rolling lubrication process comprising the steps of: providing a rolling oil emulsion using a first oil supply device in the form of an emulsion supplied to a cylinder and a steel strip in a closed circuit mode and a second device for supplying the emulsion only on the front and rear surfaces of the steel strip. In the second device, the rolling oil is added to an emulsifier of the same type and concentration as those used for the first device, with an average particle size control so that they are larger than in the first device . The emulsion produced by the second device not adhered to the band is recovered at the same time as the emulsion produced by the first device.

Le document WO-A-03/002 277 divulgue une installation pour refroidir et lubrifier des rouleaux de travail dans une cage de laminage, comprenant séparément une rampe de pulvérisation d'eau de refroidissement et une rampe de pulvérisation d'huile de lubrification, d'un mélange huile/air, huile/eau ou huile/air/eau, ou encore de graisse.The document WO-A-03 / 002,277 discloses an installation for cooling and lubricating working rolls in a rolling stand, separately comprising a cooling water spray bar and a lubricating oil spray bar, an oil / air mixture, oil / water or oil / air / water, or fat.

Le document WO-A-03/000 437 divulgue une installation et un procédé de lubrification de rouleaux de laminage, où une émulsion d'huile dans l'eau en proportions ajustables est préparée de façon homogène dans un mélangeur et fournie à différentes zones de pulvérisation dont la distribution est variable en largeur. Chaque zone correspond à une rangée de gicleurs, chaque gicleur étant contrôlé par au moins une vanne-relais.The document WO-A-03/000 437 discloses an installation and a method of lubricating rolling rolls, wherein an oil-in-water emulsion in adjustable proportions is homogeneously prepared in a mixer and supplied to different spray areas whose distribution is variable in width. Each zone corresponds to a row of nozzles, each nozzle being controlled by at least one relay valve.

Le document JP-A-2001/179 313 divulgue un dispositif d'application de lubrifiant, que ce soit sous forme d'huile non diluée ou d'émulsion, comportant une structure en réseau permettant une adhésion uniforme du lubrifiant à un rouleau de travail dans une cage de laminoir.The document JP-A-2001 / 179,313 discloses a lubricant application device, either in the form of undiluted oil or emulsion, having a network structure for uniform adhesion of the lubricant to a working roller in a rolling mill stand.

Le brevet US-A-3 933 660 propose une huile réductrice de lubrification pour laminage à chaud du cuivre et de ses alliages comprenant 1000 parts en poids d'eau, 6 à 200 parts en poids d'activateur de surface anionique de type acide carboxylique, sulfate ou phosphate et 0,8 à 200 parts en poids d'au moins un composé contenant un groupement hydroxyle de type alcool, alkylène glycol ou éther glycol. L'huile de laminage procure au cuivre et à ses alliages une lubrification, une aptitude à enlever un film d'oxyde et une aptitude à prévenir la formation d'un film d'oxyde par une pulvérisation entre le cylindre de laminage et la bande à laminer à chaud.The patent US-A-3,933,660 proposes a lubricating reducing oil for hot rolling of copper and its alloys comprising 1000 parts by weight of water, 6 to 200 parts by weight of anionic surface activator of carboxylic acid, sulfate or phosphate type and 0.8 to 200 parts by weight of at least one compound containing a hydroxyl group of alcohol type, alkylene glycol or ether glycol. Rolling oil provides copper and its alloys with lubrication, the ability to remove an oxide film and the ability to prevent the formation of oxide film by spraying between the rolling roll and the hot rolling strip.

Le document JP-A-2003/129 079 divulgue une composition lubrifiante pour le travail plastique d'un métal comprenant un carboxylate, un phosphate acide métallique ou un alkylphosphonate métallique.The document JP-A-2003 / 129,079 discloses a lubricating composition for the plastic working of a metal comprising a carboxylate, a metal acid phosphate or a metal alkylphosphonate.

Le document JP-A-55 151 093 décrit un procédé de lubrification en laminage à froid d'une bande recouverte par un composé organique polaire où l'on pulvérise une émulsion d'huile et d'une composition comprenant un composé organique polaire tel que l'acide stéarique. L'émulsion d'huile excédentaire est enlevée par essorage après formation d'une couche d'huile adsorbée à la surface de la bande.The document JP-A-55 151 093 discloses a lubricating process in cold rolling a strip coated with a polar organic compound wherein an oil emulsion and a composition comprising a polar organic compound such as stearic acid are sprayed. The excess oil emulsion is removed by wringing after formation of an oil layer adsorbed on the surface of the strip.

Le document WO-A-2005/071 050 divulgue un lubrifiant auto-émulsifiant pour le travail des métaux obtenu par maléation d'huile triglycéride végétale ou animale.The document WO-A-2005/071 050 discloses a self-emulsifying lubricant for metal working obtained by maleation of vegetable or animal triglyceride oil.

Les principaux inconvénients inhérents à ces dispositifs de pulvérisation d'une émulsion d'huile, utilisés à l'échelle industrielle, sont les suivants :

  • l'interaction huile-eau, qui est fonction du type d'huile et de la "qualité" de l'eau, détermine le temps d'adhésion de l'huile sur le cylindre, ainsi que la quantité adhérente. L'efficacité des dispositifs utilisés n'est donc pas aisément prévisible ;
  • les performances des émulsions instables utilisées sont hautement corrélées à la capacité de maintenir une bonne dispersion de l'huile dans l'eau, ou en d'autres termes à la valeur et à la stabilité au cours du temps du taux de cisaillement obtenu, lequel est corrélé au gradient de vitesse, qui est fonction à la fois de la longueur et du diamètre du tube utilisé ainsi que du débit de l'émulsion. Il est en fait difficile de maintenir cette stabilité entre le "static tube mixer" et les différents injecteurs ; en d'autres termes, il est difficile d'assurer la contrôlabilité du coefficient de frottement obtenu ;
  • la mise en contact de l'huile et de l'eau conduit généralement à des réactions formant une phase polymérique dure et collante, bouchant les tuyaux d'admission et les injecteurs.
The main disadvantages inherent to these spraying devices of an oil emulsion, used on an industrial scale, are the following:
  • the oil-water interaction, which is a function of the type of oil and the "quality" of the water, determines the time of adhesion of the oil to the cylinder, as well as the adhering amount. The effectiveness of the devices used is therefore not easily predictable;
  • the performance of the unstable emulsions used is highly correlated with the ability to maintain a good dispersion of the oil in the water, or in other words the value and stability over time of the shear rate obtained, which is correlated with the speed gradient, which is a function of both the length and diameter of the tube used as well as the flow rate of the emulsion. It is actually difficult to maintain this stability between the "static tube mixer" and the different injectors; in other words, it is difficult to ensure the controllability of the coefficient of friction obtained;
  • the contacting of the oil with the water generally leads to reactions forming a hard and sticky polymeric phase, blocking the intake pipes and the injectors.

Pour remédier à ces inconvénients, la Demanderesse a déjà proposé, dans le document EP-A-1 512 469 , un procédé et une installation de lubrification en ligne de cylindres de laminage à chaud permettant de maintenir constant ou en tout cas sous contrôle le frottement à l'échelle industrielle, d'augmenter l'efficacité de l'accrochage de l'huile de lubrification sur les cylindres et d'augmenter l'homogénéisation de la répartition de l'huile sur les cylindres.To remedy these drawbacks, the Applicant has already proposed, in the document EP-A-1,512,469 , a method and an in-line lubrication system of hot rolling rolls to maintain constant or in any case under control the friction on an industrial scale, to increase the effectiveness of the attachment of the lubricating oil on the cylinders and to increase the homogenization of the distribution of the oil on the cylinders.

Selon ce procédé, la lubrification est réalisée par pulvérisation ou atomisation d'un lubrifiant ou d'un mélange de lubrifiants au voisinage de l'interstice des cylindres de travail, au moyen d'un caisson fermé muni :

  • d'un moyen de formation d'un nuage de gouttelettes de lubrifiant de taille inférieure à 700 µm, de préférence encore inférieure à 200 µm ;
  • d'un diaphragme à ouverture réglable associé audit moyen et placé sur une face avant du caisson et
  • d'un dispositif de récupération de lubrifiant excédentaire sur la partie du diaphragme interne au caisson et sur les parois internes du caisson.
According to this method, the lubrication is carried out by spraying or atomizing a lubricant or a mixture of lubricants in the vicinity of the interstice of the working rolls, by means of a closed box provided with:
  • means for forming a cloud of lubricant droplets smaller than 700 μm, more preferably smaller than 200 μm;
  • an adjustable aperture diaphragm associated with said means and placed on a front face of the housing and
  • an excess lubricant recovery device on the part of the diaphragm internal to the box and on the internal walls of the box.

Buts de l'inventionGoals of the invention

La présente invention vise à fournir une solution qui permette de s'affranchir des inconvénients de l'état de la technique et en particulier ceux liés à l'utilisation d'émulsions huile/eau.The present invention aims to provide a solution that overcomes the disadvantages of the state of the art and in particular those related to the use of oil / water emulsions.

L'invention a pour but l'obtention d'une haute homogénéité de lubrification des cylindres, adaptable et contrôlable tant à la hausse qu'à la baisse.The invention aims to obtain a high homogeneity of cylinder lubrication, adaptable and controllable both upward and downward.

L'invention a encore pour but une utilisation précise et économe de lubrifiant, à très faible débit, pour la même efficacité.The invention also aims a precise and economical use of lubricant, very low flow, for the same efficiency.

L'invention a encore comme but la réalisation d'une installation ne nécessitant pas une arrivée d'électricité au niveau de la cage, ni le chauffage de l'huile.The invention also aims to achieve an installation that does not require an electricity supply at the cage, or the heating of the oil.

L'invention a encore comme but une maintenance aisée, grâce notamment à la prévention de l'obstruction des tuyauteries et des gicleurs.Another object of the invention is easy maintenance, in particular by preventing the obstruction of the pipes and the nozzles.

L'invention a encore comme but l'élimination du risque de feu et la diminution de la pollution par le lubrifiant.The invention also aims to eliminate the risk of fire and the reduction of pollution by the lubricant.

L'invention a comme but additionnel de fournir des gicleurs directement montés sur un collecteur d'air commun, sous forme d'un système compact, qui les alimente et leur sert également de support mécanique.The invention has the additional object of providing sprinklers directly mounted on a common air collector, in the form of a compact system, which feeds them and also serves as mechanical support.

L'invention a encore comme but de fournir une installation comportant soit une pompe commune à plusieurs gicleurs par zone, soit plusieurs pompes de dosage pour plusieurs gicleurs, à raison d'une seule pompe par gicleur.Another object of the invention is to provide an installation comprising either a common pump with several nozzles per zone, or several dosing pumps for several nozzles, with a single pump per nozzle.

L'invention a enfin comme but l'utilisation d'une huile sans pression dans le gicleur, qui soit de débit réglable.Finally, the object of the invention is the use of an oil without pressure in the nozzle, which is of adjustable flow rate.

Principaux éléments caractéristiques de l'inventionMain characteristic elements of the invention

Un premier objet de la présente invention, indiqué dans la revendication 1, concerne une ligne de laminage d'une bande métallique comprenant une installation de lubrification en ligne de cylindres de laminage, de préférence à chaud, de préférence en acier, par pulvérisation ou atomisation d'un lubrifiant sur une cible comprenant lesdits cylindres et/ou ladite bande, de préférence au voisinage de l'emprise, au moyen d'une rampe d'atomiseurs à air contrôlables, disposée parallèlement auxdits cylindres et alimentée en air ou gaz inerte sous pression, caractérisée en ce que chaque atomiseur comprend une entrée pour l'air ou le gaz inerte sous pression et une entrée d'huile pure sans pression dans un adaptateur suivi d'une chambre de mélange, ainsi qu'un gicleur de sortie pour le mélange atomisé.A first object of the present invention, indicated in claim 1, relates to a rolling line of a metal strip comprising an in-line lubrication system for rolling rolls, preferably hot, preferably steel, by spraying or atomizing a lubricant on a target comprising said cylinders and / or said band, preferably in the vicinity of the right-of-way, by means of a ramp of controllable air atomizers, arranged parallel to said cylinders and supplied with air or inert gas under pressure, characterized in that each atomizer comprises an inlet for air or inert gas under pressure and a pure oil inlet without pressure in an adapter followed by a mixing chamber, and an outlet nozzle for the atomized mixture.

Des formes d'exécution préférées de l'installation selon l'invention sont décrites dans les revendications dépendantes 2 à 13.Preferred embodiments of the plant according to the invention are described in dependent claims 2 to 13.

Un autre objet de la présente invention, indiqué dans la revendication 14, concerne un procédé de lubrification en ligne de cylindres de laminage, de préférence à chaud, d'une bande métallique, de préférence en acier, par pulvérisation ou atomisation d'un lubrifiant au moyen de l'installation précitée, caractérisé en ce qu'on génère, à la sortie des atomiseurs de la rampe, un nuage de fines gouttelettes d'huile pure sous pression d'air, avec un débit d'huile maximal de 200 ml/min, l'huile entrant sans pression dans l'atomiseur, la pression d'air étant inférieure à 0,5 bar.Another object of the present invention, as set forth in claim 14, relates to a method of in-line lubrication of rolling rolls, preferably hot rolling, of a metal strip, preferably steel, by spraying or atomizing a lubricant by means of the aforementioned installation, characterized in that a cloud of fine droplets of pure oil under air pressure is generated at the outlet of the atomizers of the ramp, with a maximum oil flow of 200 ml. / min, the oil entering without pressure in the atomizer, the air pressure being less than 0.5 bar.

Des formes d'exécution préférées du procédé selon l'invention sont décrites dans les revendications dépendantes 15 et 16.Preferred embodiments of the process according to the invention are described in dependent claims 15 and 16.

Brève description des figuresBrief description of the figures

La figure 1 est une représentation en perspective (avec sa vue de détail) d'une rampe d'atomiseurs à air pour la pulvérisation d'huile pure sur des cylindres de laminage, selon la présente invention.The figure 1 is a perspective representation (with its detail view) of an air atomizer ramp for spraying pure oil on rolling rolls, according to the present invention.

La figure 2 représente schématiquement une vue de détail en coupe d'un atomiseur de la rampe de la figure 1.The figure 2 schematically represents a detail view in section of an atomizer of the ramp of the figure 1 .

La figure 3 représente schématiquement une vue générale de l'installation de lubrification selon une première forme d'exécution préférée de l'invention.The figure 3 schematically represents a general view of the lubrication system according to a first preferred embodiment of the invention.

La figure 4 représente un exemple réel de dessin d'atomisation obtenu avec l'installation selon la présente invention.The figure 4 represents a real example of atomization pattern obtained with the installation according to the present invention.

La figure 5 représente schématiquement une vue générale de l'installation de lubrification selon une deuxième forme d'exécution préférée de l'invention.The figure 5 schematically represents a general view of the lubrication system according to a second preferred embodiment of the invention.

La figure 6 représente schématiquement une vanne à distribution modulaire (MDV) telle qu'utilisée dans l'installation de la figure 5.The figure 6 schematically represents a modular distribution valve (MDV) as used in the installation of the figure 5 .

La figure 7 représente graphiquement l'évolution de la force totale de laminage au cours du temps dans une installation à tube statique, respectivement avec utilisation d'huile de laminage et d'huile de colza comme lubrifiant et pour différentes valeurs de « plate-out ».The figure 7 graphically represents the evolution of the total rolling force over time in a static pipe installation, respectively using rolling oil and rapeseed oil as lubricant and for different "flat-out" values.

La figure 8 représente graphiquement l'évolution de la force totale de laminage au cours du temps dans une installation selon la figure 5, avec utilisation d'huile de colza.The figure 8 graphically represents the evolution of the total rolling force over time in an installation according to the figure 5 , with use of rapeseed oil.

Description détaillée de l'inventionDetailed description of the invention

La présente invention est basée sur le principe d'atomisation à l'air pour pulvériser de très petites quantités d'huile pure sur les cylindres de travail. Suite à la très faible concentration d'huile pure utilisée, une répartition surfacique (« plate-out ») de 0 à 0,6 g/m2 peut être atteinte. Selon le dispositif d'atomisation à l'air de l'invention, la pulvérisation est formée grâce au mélange intime d'huile et d'air provenant de deux tubulures distinctes, l'air et l'huile étant « mélangés » juste après la sortie du petit tube d'entrée d'huile. Pour obtenir un dessin parfait de pulvérisation, la pression d'air et le débit d'huile ont été parfaitement ajustés au type d'application considéré, de manière à éviter la formation de brouillard.The present invention is based on the principle of air atomization to spray very small amounts of pure oil on the working cylinders. Due to the very low concentration of pure oil used, a flat-out distribution of 0 to 0.6 g / m 2 can be achieved. According to the air atomization device of the invention, the spray is formed by the intimate mixture of oil and air from two separate pipes, the air and the oil being "mixed" just after the exit of the small oil inlet tube. To obtain a perfect spray pattern, the air pressure and the oil flow rate were perfectly adjusted to the type of application considered, so as to avoid the formation of fog.

Il est caractéristique de la présente invention que l'huile n'est pas sous pression, c'est-à-dire qu'elle a une pression aussi faible que possible, mais est fournie aux gicleurs en très petite quantité par une (micro)pompe, en combinaison ou non avec un distributeur. L'huile s'écoule par un petit tube et le risque d'obstruction du gicleur est inexistant parce que son orifice a une ouverture dont la taille est de l'ordre du millimètre. Aucun chauffage de l'huile n'est requis parce que le dessin de pulvérisation et la taille des gouttelettes sont contrôlés uniquement par la pression de l'air.It is characteristic of the present invention that the oil is not under pressure, that is to say that it has a pressure as low as possible, but is supplied to the nozzles in a very small amount by a (micro) pump, in combination or not with a distributor. The oil flows through a small tube and the risk of obstruction of the nozzle is non-existent because its orifice has an opening whose size is of the order of a millimeter. No oil heating is required because the spray pattern and the size of the droplets are controlled only by the pressure of the air.

Suite aux conditions d'environnement hostiles régnant dans les cages (hautes températures, humidité, etc.), une tête de pulvérisation robuste est proposée, qui peut facilement supporter ces influences hostiles. Aucun refroidissement de la tête n'est requis du fait que celle-ci est constituée uniquement de métal. Avec ce système, il est également possible d'avoir un contrôle de la largeur de pulvérisation, de manière telle que cette largeur puisse être calquée sur la largeur de la bande. Il faut alors installer une pompe additionnelle dans ce but.Due to hostile environment conditions in the cages (high temperatures, humidity, etc.), a robust spray head is proposed, which can easily withstand these hostile influences. No cooling of the head is required because it is made of metal only. With this system, it is also possible to have a control of the spray width, so that this width can be modeled on the width of the strip. An additional pump must be installed for this purpose.

Description de formes d'exécution préférées de l'inventionDescription of preferred embodiments of the invention EXEMPLE 1EXAMPLE 1

Selon une première forme d'exécution préférée de l'invention, représentée sur la figure 1, le dispositif de lubrification comporte une rampe 2 d'atomiseurs à air 3 disposée parallèlement au cylindre de laminage 1. Les atomiseurs 3 sont disposés le long de cette rampe 2, perpendiculairement à celle-ci, de préférence équidistants les uns par rapport aux autres. De préférence, la distance entre la rampe et le rouleau est de 100-200 mm.According to a first preferred embodiment of the invention, represented on the figure 1 , the lubricating device comprises a ramp 2 of air atomizers 3 arranged parallel to the rolling cylinder 1. The atomizers 3 are arranged along this ramp 2, perpendicular thereto, preferably equidistant from each other . Preferably, the distance between the ramp and the roll is 100-200 mm.

La figure 2 montre le détail d'un atomiseur 3, réalisé en acier inoxydable. Celui-ci comporte une entrée d'air sous pression 4, une entrée d'huile non pressurisée 5, ces deux entrées étant situées au niveau d'un adaptateur spécialement conçu 6 suivi d'une chambre de mélange 6' où se mélangent huile et air, ainsi qu'un gicleur 7 pour la sortie du mélange atomisé. L'adaptateur 6 situé après le collecteur d'air 4 permet donc le transport de l'air et l'alimentation en huile par l'entrée 5. Il joue également un rôle de fixation du gicleur (support).The figure 2 shows the detail of an atomizer 3, made of stainless steel. This comprises a pressurized air inlet 4, an unpressurized oil inlet 5, these two inlets being located at a specially designed adapter 6 followed by a mixing chamber 6 'where oil and air, and a nozzle 7 for the output of the atomized mixture. The adapter 6 located after the air collector 4 thus allows the air transport and the oil supply through the inlet 5. It also plays a role of attachment of the nozzle (support).

Avantageusement, on prévoira une quinzaine d'atomiseurs 3 pour une rampe 2 permettant une largeur de traitement de 2 m, avec par exemple un débit d'huile minimal de 50 ml/minute et maximal de 150 ml/minute. Les valeurs préférées de débit d'huile seront déterminées, pour chaque train de laminage spécifique, en fonction de la vitesse de rotation des cylindres (jusqu'à 20 m/s). On utilisera de préférence de l'huile naturelle (donc pas de milieu « porteur »), à une pression aussi faible que possible (idéalement 0 bar), de viscosité de l'ordre de 20-50 mPa.s. Le système sera réglé de manière à obtenir un « plate-out » de l'ordre de 0,4 g/m2, ce qui permet d'optimiser la force et le couple de laminage. La pression d'air ne peut excéder 0,4-0,45 bar, sous peine de voir la formation de brouillard. L'orifice des gicleurs ne doit pas être très petit, il est typiquement de 1,5 mm Ø, d'où le risque d'obstruction est faible, comme déjà mentionné.Advantageously, there will be provided a dozen atomizers 3 for a ramp 2 allowing a treatment width of 2 m, with for example a minimum oil flow rate of 50 ml / minute and a maximum of 150 ml / minute. The preferred values of oil flow will be determined for each specific rolling mill as a function of the rotational speed of the rolls (up to 20 m / s). It is preferable to use natural oil (and therefore no "carrier" medium) at a pressure as low as possible (ideally 0 bar), with a viscosity in the range of 20-50 mPa.s. The system will be adjusted to obtain a "platform-out" of the order of 0.4 g / m 2 , which optimizes the force and the rolling torque. Pressure air can not exceed 0.4-0.45 bar, otherwise the formation of fog. The orifice of the nozzles must not be very small, it is typically 1.5 mm Ø, hence the risk of obstruction is low, as already mentioned.

La figure 3 montre une vue générale d'une installation de lubrification selon cette première forme d'exécution de l'invention, comportant une rampe d'atomiseurs contrôlables, tels que décrits sur la figure 2.The figure 3 shows a general view of a lubrication installation according to this first embodiment of the invention, comprising a ramp of controllable atomizers, as described on the figure 2 .

Chacun des atomiseurs 3 de la rampe 2 est contrôlé au niveau d'un distributeur 9 comportant autant de micropompes de dosage que d'atomiseurs sur la rampe. Chaque micropompe du distributeur 9 est alimenté par un réservoir d'huile 11 et contrôlée individuellement, via un contrôleur de débit d'huile (12), par un PC 10 (par ex. 15 sorties, 0-40 Hz). La rampe 2 est alimentée par une conduite en air sous pression 13. La valeur de pression d'air est communiquée au PC pour régulation par un manomètre 14. La vitesse du cylindre 1 est également communiquée au PC par un appareil de mesure 15. Une vanne supplémentaire On/Off (non représentée) peut être installée sur la conduite d'huile alimentant le distributeur 9, juste avant celui-ci, pour des raisons de facilité d'utilisation de l'installation.Each of the atomizers 3 of the ramp 2 is controlled at a distributor 9 having as many metering micropumps as atomizers on the ramp. Each micropump of the distributor 9 is fed by an oil tank 11 and controlled individually, via an oil flow controller (12), by a PC 10 (eg 15 outputs, 0-40 Hz). The ramp 2 is supplied by a pressurized air line 13. The air pressure value is communicated to the PC for regulation by a pressure gauge 14. The speed of the cylinder 1 is also communicated to the PC by a measuring device 15. additional On / Off valve (not shown) can be installed on the oil line supplying the distributor 9, just before it, for reasons of ease of use of the installation.

L'exemple de dessin d'atomisation représenté sur la figure 4 a une extension de 18 cm, à une distance de 20 cm des gicleurs. L'extension est de 13,5 cm si les gicleurs sont à 15 cm (débit d'huile de 6 ml/min et pression d'air de 0,3 bar avec un débit d'air de 10 l/min par gicleur).The example of atomization drawing shown on the figure 4 has an extension of 18 cm, at a distance of 20 cm from the jets. The extension is 13.5 cm if the nozzles are 15 cm (oil flow 6 ml / min and air pressure 0.3 bar with an air flow of 10 l / min per nozzle) .

EXEMPLE 2EXAMPLE 2

Selon une deuxième forme d'exécution préférée de l'invention, représentée sur la figure 5, la rampe 2 d'atomiseurs à air, disposée parallèlement au cylindre de laminage 1, est alimentée en huile venant du réservoir 11 selon des lignes parallèles munies de pompes de dosage 16 et aboutissant chacune, par une entrée 17, à une vanne à distribution modulaire 8 (MDV, pour modular divider valve, voir figure 6) se trouvant à une extrémité de la rampe 2 et dont les sorties multiples 18 alimentent les atomiseurs 3 situés sur la rampe 2. Une vanne supplémentaire On/Off (non représentée) peut être installée sur les conduites parallèles d'huile alimentant le distributeur 8, juste avant celui-ci, pour des raisons de facilité d'utilisation de l'installation.According to a second preferred embodiment of the invention, represented on the figure 5 , the ramp 2 of air atomizers, arranged parallel to the rolling roll 1, is supplied with oil from the tank 11 in parallel lines provided with metering pumps 16 and each terminating, through an inlet 17, to a distribution valve modular 8 (MDV, for modular divider valve , see figure 6 ) at one end of the ramp 2 and whose multiple outputs 18 feed the atomizers 3 located on the ramp 2. An additional On / Off valve (not shown) can be installed on the parallel lines of oil supplying the distributor 8 , just before this one, for reasons of ease of use of the installation.

Un exemple de distributeur MDV 8, à six sorties 11, commercialisée par Lubriquip Inc., Cleveland, Ohio (USA), est représenté sur la figure 6. Un cycle d'alimentation séquentielle des différentes portes de sortie 18 est assuré par le mouvement des pistons 19. L'utilisation de plusieurs vannes permet de diviser le cylindre à lubrifier en 2 ou 3 zones, par exemple A, B, C. La fourniture d'air 13 est assurée à une extrémité de la rampe 2 (0,3 bar). Dans chaque zone A, B, C, une pompe de dosage et un distributeur MDV sont utilisées pour alimenter chaque atomiseur 3 de la zone. Pour chaque zone, l'huile venant du réservoir central 11 est acheminé à une pompe de dosage 16. La pression minimale dépend de la perte de charge de la vanne MDV. Généralement une pression de 2 bar est nécessaire, mais, en cas de besoin, on peut augmenter la pression jusqu'à 10-15 bar. Avantageusement, l'huile sera filtrée, dans la mesure où des impuretés arrivant dans les vannes MDV sont susceptibles d'en perturber le fonctionnement.An example of an MDV 8 distributor, with six outlets 11, marketed by Lubriquip Inc., Cleveland, Ohio (USA), is shown on FIG. figure 6 . A sequential feeding cycle of the different exit doors 18 is ensured by the movement of the pistons 19. The use of several valves makes it possible to divide the cylinder to be lubricated in 2 or 3 zones, for example A, B, C. The supply air 13 is provided at one end of the ramp 2 (0.3 bar). In each zone A, B, C, a dosing pump and an MDV distributor are used to feed each atomizer 3 of the zone. For each zone, the oil coming from the central tank 11 is conveyed to a metering pump 16. The minimum pressure depends on the pressure drop of the valve MDV. Generally a pressure of 2 bar is necessary, but, if necessary, the pressure can be increased to 10-15 bar. Advantageously, the oil will be filtered, to the extent that impurities arriving in the MDV valves are likely to disrupt the operation.

Avantageusement, la pression d'huile et la pression d'air seront contrôlées en permanence. De même, chaque cycle de MDV peut être parfaitement contrôlé (par exemple une impulsion toutes les 0,5 s ; pour 8 sorties, différence de temps entre deux sorties = 0,0625 s) et peut être enregistré sur un PC. Si un tuyau est encrassé, un signal d'alarme sera envoyé et permettra la mise hors-circuit de la vanne MDV correspondante.Advantageously, the oil pressure and the air pressure will be constantly monitored. Similarly, each cycle of MDV can be perfectly controlled (for example a pulse every 0.5 s, for 8 outputs, time difference between two outputs = 0.0625 s) and can be recorded on a PC. If a pipe is clogged, an alarm signal will be sent and allow the corresponding MDV valve to be disconnected.

RESULTATS D'ESSAIS COMPARATIFSCOMPARATIVE TEST RESULTS

Des essais comparatifs de lubrification de rouleaux en continu au moyen de deux types de lubrifiants différents, à savoir respectivement de l'huile de laminage à chaud et de l'huile de colza, ont été réalisés. Les deux technologies utilisées sont respectivement par emulsion celle utilisant le principe du tube statique, selon l'état de la technique et celle utilisant l'huile pure selon la présente invention.Comparative roller lubrication comparative tests using two different types of lubricants, namely hot rolling oil and rapeseed oil respectively, were carried out. The two technologies used are respectively emulsified using the principle of the static tube, according to the state of the art and that using the pure oil according to the present invention.

Le tube statique comporte 4 gicleurs situés à une distance de 20-25 cm des rouleaux à lubrifier. La vitesse des rouleaux est comprise entre 0,3 et 0,5 m/s et le taux de réduction est de 50%. L'atomisation sur les rouleaux crée une zone d'arrosage qui a une largeur de 15 cm.The static tube has 4 jets located at a distance of 20-25 cm from the rollers to be lubricated. The speed of the rollers is between 0.3 and 0.5 m / s and the reduction rate is 50%. Spraying on the rollers creates a watering area that is 15 cm wide.

Des conditions industrielles correspondant à un « plate-out » de 0,6 g/m2 ont été simulées. Des essais ont également été réalisés à des valeurs de « plate-out » plus élevées.Industrial conditions corresponding to a "platform-out" of 0.6 g / m 2 were simulated. Tests were also performed at higher "flat-out" values.

Un « plate-out » théorique de 0,6 g/m2 correspond à un débit de 5 ml/min (soit 1,25 ml/min par gicleur) à une vitesse de 0,3 m/s et à un débit de 8 ml/min à une vitesse de 0,5 m/s.A theoretical "flat-out" of 0.6 g / m 2 corresponds to a flow rate of 5 ml / min (ie 1.25 ml / min per nozzle) at a speed of 0.3 m / s and at a flow rate of 8 ml / min at a speed of 0.5 m / s.

Un « plate-out » théorique de 4,2 g/m2 correspond à un débit de 32 ml/min (soit 8 ml/min par gicleur) à une vitesse de 0,3 m/s.A theoretical "flat-out" of 4.2 g / m 2 corresponds to a flow rate of 32 ml / min (ie 8 ml / min per nozzle) at a speed of 0.3 m / s.

Un « plate-out » théorique de 2,5 g/m2 correspond à un débit de 32 ml/min (soit 8 ml/min par gicleur) à une vitesse de 0,5 m/s.A theoretical "flat-out" of 2.5 g / m 2 corresponds to a flow rate of 32 ml / min (ie 8 ml / min per nozzle) at a speed of 0.5 m / s.

La figure 7 montre la variation de la force de laminage 21 en fonction du temps (et la moyenne mobile sur 250 périodes, 22), pour chaque type d'huile et, selon le cas, à différentes valeurs de « plate-out » (de 0,6 à 4,2 g/m2). La vitesse des rouleaux 23 est également représentée.The figure 7 shows the variation of the rolling force 21 as a function of time (and the moving average over 250 periods, 22), for each type of oil and, as the case may be, at different "plate-out" values (of 0, 6 to 4.2 g / m 2 ). The speed of the rollers 23 is also shown.

Des essais similaires ont été réalisés avec la technologie selon l'invention, à vannes de répartition modulaire d'huile (de colza) pure et atomisation à air. La vitesse des rouleaux est de 0,3 et le taux de réduction est de 50%. L'atomisation a une largeur de 20 cm (sur une bande de 10 cm).Similar tests were carried out with the technology according to the invention, with modular distribution valves of pure oil (rapeseed) and air atomization. The speed of the rollers is 0.3 and the reduction rate is 50%. The atomization has a width of 20 cm (on a strip of 10 cm).

Le répartiteur d'huile a été utilisé avec une pompe de dosage et 8 sorties (donc 8 gicleurs). Le débit total vers le répartiteur était de 60 ml/min (soit 7,5 ml/gicleur), ce qui correspond à un « plate-out » théorique de 0.4 g/m2.The oil distributor was used with a dosing pump and 8 outlets (8 sprinklers). The total flow to the distributor was 60 ml / min (7.5 ml / nozzle), which corresponds to a theoretical "out-of-the-box" of 0.4 g / m 2 .

Ces premiers essais représentés sur les figures 7 et 8 montrent que la force de laminage est mutatis mutandis sensiblement réduite (env. 15%) en utilisant la technologie selon la présente invention.These first tests represented on the figures 7 and 8 show that the rolling force is mutatis mutandis substantially reduced (about 15%) using the technology according to the present invention.

AVANTAGES DE L'INVENTIONADVANTAGES OF THE INVENTION

Les avantages de la présente invention sont notamment les suivants :

  • utilisation d'huile pure non pressurisée (à la limite 0 bar) et non chauffée, avec réduction d'au moins 30 % du débit d'huile par rapport à l'utilisation d'émulsions ;
  • pas d'émulsion, c'est-à-dire de milieu porteur pour l'huile ;
  • diminution du risque d'incendie (pas de pression d'huile) ;
  • diminution de la pollution de l'environnement ;
  • pas de formation de brouillard ;
  • pas de risque d'obstruction des gicleurs, l'utilisation de gicleurs à orifices importants étant permise, la viscosité de l'huile n'étant dès lors pas limitative ;
  • haute homogénéité de pulvérisation ;
  • optimisation de la force de laminage et grande efficacité de lubrification ;
  • contrôle direct du débit d'huile sur le cylindre supérieur et sur le cylindre inférieur ;
  • obtention d'un système compact et robuste ;
  • pas nécessité de nettoyage des tuyauteries de lubrification avec utilisation d'eau chaude, vu l'utilisation d'huile pure ;
  • possibilité d'utiliser de l'huile végétale sans additif, ce qui est plus écologique.
The advantages of the present invention include the following:
  • use of non-pressurized (at the 0 bar limit) and unheated pure oil, with a reduction of at least 30% in the oil flow compared with the use of emulsions;
  • no emulsion, that is to say carrier medium for the oil;
  • reduced risk of fire (no oil pressure);
  • reduction of environmental pollution;
  • no fog formation;
  • no risk of clogging of the nozzles, the use of nozzles with large orifices being allowed, the viscosity of the oil is therefore not limiting;
  • high homogeneity of spray;
  • optimization of the rolling force and high lubrication efficiency;
  • direct control of the oil flow on the upper cylinder and on the lower cylinder;
  • obtaining a compact and robust system;
  • no need to clean the lubrication pipes with the use of hot water, considering the use of pure oil;
  • possibility to use vegetable oil without additives, which is more ecological.

Claims (16)

  1. Line for rolling a metal strip, comprising an installation for the in-line lubrication of rolling cylinders (1), preferably for hot rolling, preferably made of steel, by spraying or atomising a lubricant over a target comprising said cylinders and/or said strip, preferably in the vicinity of the roll gap, by means of a bar (2) of controllable air sprays (3), arranged in parallel to said cylinders (1) and supplied with compressed air or inert gas (4), each spray (3) comprising an inlet for the compressed air or inert gas (4) and an inlet for uncompressed pure oil (5), in an adapter (6) followed by a mixing chamber (6') as well as an outlet nozzle (7) for the atomised mixture.
  2. Rolling line according to Claim 1, characterised in that the lubrication installation comprises a divider (9) for controlling the release of oil from each spray (3) of the bar (2), said divider (9) being supplied by an oil tank (11) and comprising a precision dosing pump linked to each spray (3) of the bar (2), said pump being individually controllable by a computer (10).
  3. Rolling line according to Claim 1, characterised in that the lubrication installation comprises a divider (9) for controlling the release of oil from each spray (3) of the bar (2), said divider (9) comprising at least one oil-supply line provided with a precision dosing pump (16) followed by a modular divider valve or MDV valve (8) with a number of outlets (18) and a sequential distribution system with pistons (19).
  4. Rolling line according to Claim 3, characterised in that the MDV valve (8) is configured so as to selectively supply groups of sprays (3) for the differentiated lubrication of corresponding zones (A, B, C) of the target.
  5. Rolling line according to Claim 4, characterised in that the number of zones (A, B, C) equals at least 2.
  6. Rolling line according to any of Claims 2 to 5, characterised in that the lubrication installation comprises an oil flow rate controller (12) whose measurements can be used by the computer (10) for controlling the supply of oil to the bar (2) as well as the spraying width and a manometer (14) providing measurements of the air pressure that may also be communicated to the computer (10).
  7. Rolling line according to Claim 6, characterised in that the lubrication installation moreover comprises a measurement device (15) allowing to communicate the instantaneous speed of a cylinder (1) to the computer (10).
  8. Rolling line according to any of the preceding claims, characterised in that the size of the aperture of the nozzles (7) is between Ø 0.5 and 2mm.
  9. Rolling line according to any of the preceding claims, characterised in that the sprays (3) are equidistant on the bar (2).
  10. Rolling line according to any of the preceding claims, characterised in that the distance between the bar (2) and the target is between 100 and 150mm.
  11. Rolling line according to any of the preceding claims, characterised in that the lubrication installation comprises an oil-filtration system.
  12. Rolling line according to any of the preceding claims, characterised in that the spraying clouds from the individual sprays (3) partly overlap on the target.
  13. Rolling line according to any of the preceding claims, characterised in that the lubrication installation is intended for the lubrication of a metal strip or roller surface moving at a linear speed from 0.5 to 20m/s.
  14. Method of the in-line lubrication of the rolling cylinders of a rolling line according to any of the preceding claims, preferably for hot rolling, of a metal strip, which is preferably steel, by spraying or atomising a lubricant, characterised in that a cloud of fine droplets of pure oil pressurised by air is created at the outlets of the sprays (3) of the bar (2), with a maximum oil flow rate of 200ml/min, the oil entering the spray without pressure, the air pressure being lower than 0.5bar.
  15. Method according to Claim 14, characterised in that the distribution of oil to the individual sprays (3) of the bar (2) is controlled by the computer (10) which receives as input the values measured for the oil flow rate, air pressure and cylinder speed.
  16. Method according to Claim 14 or 15, characterised in that the installation is controlled so as to deposit on the target a surface quantity ("plate-out") of lubricant of between 0.1 and 1g/m2, and preferably less than or equal to 0.6g/m2.
EP08837441.8A 2007-10-08 2008-10-07 Spray lubrication unit and method for rolling cylinders Active EP2195125B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2007/0486A BE1017806A3 (en) 2007-10-08 2007-10-08 ATOMIZATION LUBRICATION SYSTEM AND METHOD FOR ROLLING CYLINDERS.
PCT/BE2008/000077 WO2009046505A1 (en) 2007-10-08 2008-10-07 Spray lubrication unit and method for rolling cylinders

Publications (3)

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EP2195125A1 EP2195125A1 (en) 2010-06-16
EP2195125B1 EP2195125B1 (en) 2014-12-03
EP2195125B2 true EP2195125B2 (en) 2018-10-31

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EP (1) EP2195125B2 (en)
JP (1) JP5442619B2 (en)
KR (1) KR101490354B1 (en)
CN (1) CN101821026A (en)
BE (1) BE1017806A3 (en)
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Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011126139A1 (en) 2010-04-07 2011-10-13 新日本製鐵株式会社 Lubricating oil supply facility and lubricating oil supply method
JP5577880B2 (en) * 2010-06-22 2014-08-27 新日鐵住金株式会社 Lubricating oil supply method
EP2465619A1 (en) * 2010-12-16 2012-06-20 Siemens VAI Metals Technologies GmbH Method and device for applying a lubricant when milling a metallic milling product
DE102011102536A1 (en) * 2011-05-26 2012-11-29 Linde Aktiengesellschaft Device with lubricant protection arrangement and lubrication method
DE102011102539A1 (en) * 2011-05-26 2012-11-29 Linde Aktiengesellschaft Aerosol lubricator, lubrication assembly and lubrication method
CN102284495B (en) * 2011-08-18 2014-08-13 中冶南方工程技术有限公司 Water mist pinch pass rolling process in cold rolling wet pinch pass rolling production
BE1020250A3 (en) 2011-09-13 2013-07-02 Ct Rech Metallurgiques Asbl REUSE USED OIL IN A ROLLING MILL.
GB2511512B (en) * 2013-03-05 2015-06-10 Siemens Plc Cooling device & method
ES2639741T3 (en) * 2013-03-15 2017-10-30 Novelis, Inc. Manufacturing methods and apparatus for specific lubrication in hot metal rolling
KR102064552B1 (en) 2013-03-26 2020-01-10 삼성전자주식회사 Substrate treating apparatus
EP2893986A1 (en) 2014-01-08 2015-07-15 Siemens VAI Metals Technologies GmbH Lubrication with spray nozzles with multiple oil inlet openings
CN104942031B (en) * 2014-03-26 2017-05-31 宝山钢铁股份有限公司 A kind of cold rolling lubricant supplying method
JP6696272B2 (en) * 2016-04-08 2020-05-20 コニカミノルタ株式会社 Fixing device and image forming device
EP3251762B1 (en) * 2016-06-02 2019-08-07 Primetals Technologies Austria GmbH Lubricating device for applying a lubricant when rolling a product to be rolled
CN107900113A (en) * 2017-11-17 2018-04-13 中铝瑞闽股份有限公司 A kind of method for evaluating Aluminum Strip Rolling oil technological lubrication performance
US11352755B2 (en) * 2018-08-16 2022-06-07 Caterpillar Sarl Cleaning system and method for a spraying system
CN110947778B (en) * 2018-09-26 2022-01-14 宝山钢铁股份有限公司 Emulsion spraying device for cold rolling unit and spraying pipeline design method thereof
KR102200157B1 (en) * 2018-09-28 2021-01-07 주식회사 포스코 Rolling mill and Method for rolling using the same
CN110201568B (en) * 2019-06-05 2020-06-19 燕山大学 Emulsion online mixing device and part model selection method thereof
CN112317542B (en) * 2020-10-28 2022-05-31 洛阳万基铝加工有限公司 Atomizing and oil spraying device for roller

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175643A (en) * 1962-05-29 1965-03-30 Gulf Research Development Co Compressor and atomizing nozzle lubricator
US3599866A (en) * 1968-08-21 1971-08-17 Soilserv Inc Atomizing spray process and apparatus
US3618709A (en) * 1969-11-06 1971-11-09 Unimist Inc Pressurized lubrication system
JPS49122866A (en) * 1973-03-29 1974-11-25
US3933660A (en) * 1974-08-13 1976-01-20 Toho Chemical Industry Co., Ltd. Rolling oils
JPS51127971A (en) * 1975-04-30 1976-11-08 Hitachi Ltd Automatic fuel supply device
JPS55151093A (en) 1979-05-15 1980-11-25 Nippon Steel Corp Lubrication of sheet material in cold rolling
US4527661A (en) * 1981-10-29 1985-07-09 Kearney & Trecker Corporation Adaptive control system for machine tool or the like
JPS58156548U (en) * 1982-04-08 1983-10-19 株式会社共立合金製作所 Nozzle device for gas-liquid mixture spray
US4623455A (en) * 1983-05-25 1986-11-18 D L Adcock Method and device for filtering lubricating oil for a dough divider machine
GB8925856D0 (en) * 1989-11-15 1990-01-04 Davy Mckee Sheffield The rolling of metal strip
JP3615813B2 (en) * 1994-12-28 2005-02-02 株式会社日立製作所 Lubricating oil supply system between rolls of work roll cloth rolling mill
US5553783A (en) * 1995-01-09 1996-09-10 Bete Fog Nozzle, Inc. Flat fan spray nozzle
US5497852A (en) * 1995-04-12 1996-03-12 Mcneil Corporation Automatic lubrication system
JPH11129002A (en) * 1997-10-29 1999-05-18 Kawasaki Steel Corp Hot finish rolling method
US6036116A (en) * 1998-04-16 2000-03-14 Coltec Industries Inc Fluid atomizing fan spray nozzle
US6065693A (en) * 1998-08-28 2000-05-23 Lukas; John J. Flowerbed irrigation shower
US6182793B1 (en) * 1999-04-13 2001-02-06 Warren Jamison Lubricant delivery system for lubricating rail wheel flanges
US6145626A (en) * 1999-06-04 2000-11-14 Lubriquip, Inc. Air/oil lubrication system and method for monitoring and controlling air/oil lubrication systems
JP2001179313A (en) 1999-10-13 2001-07-03 Nippon Steel Corp Lubricating oil feeder for rolling and rolling method
KR100466711B1 (en) 2000-03-09 2005-01-15 제이에프이 스틸 가부시키가이샤 Rolling oil supplying method for cold rolling
JP3578072B2 (en) 2000-09-29 2004-10-20 Ｊｆｅスチール株式会社 Coolant supply method in warm rolling
JP3650963B2 (en) * 2000-10-26 2005-05-25 フジビーシー技研株式会社 Cutting oil application device
US6698551B2 (en) * 2001-04-10 2004-03-02 Lincoln Industrial Corporation Modular lubricating system and injector
DE10130445A1 (en) 2001-06-23 2003-01-02 Sms Demag Ag Method and arrangement of nozzles for variable width lubrication of a roll stand
DE10131369A1 (en) * 2001-06-28 2003-01-09 Sms Demag Ag Method and device for cooling and lubricating rolls of a roll stand
JP3777569B2 (en) 2001-10-26 2006-05-24 大同化学工業株式会社 Metallic plastic processing lubricant composition
DE60332935D1 (en) * 2002-05-07 2010-07-22 Spraying Systems Co SPRAY NOZZLE ASSEMBLY WITH INTERNAL MIXING AIR INTAKE
US7096889B1 (en) * 2003-04-01 2006-08-29 Curtis Roys Fluid divider block suitable for use at high pressures
BE1015673A3 (en) * 2003-09-08 2005-07-05 Ct Rech Metallurgiques Asbl Method and system for rolling cylinder lubrication.
WO2005071050A1 (en) 2004-01-09 2005-08-04 The Lubrizol Corporation Maleated vegetable oils and derivatives, as self-emulsifying lubricants in metalworking
US20060060425A1 (en) * 2004-09-17 2006-03-23 Curtis Richardson Air/oil mist lubrication system and method of use
JP2006142339A (en) * 2004-11-19 2006-06-08 Nippon Steel Corp Method for supplying lubricant in hot rolling
JP4355280B2 (en) * 2004-11-22 2009-10-28 新日本製鐵株式会社 Lubricating oil supply method in cold rolling
CN2808349Y (en) * 2005-05-11 2006-08-23 攀枝花新钢钒股份有限公司 Lubrication unit for hot rolling process

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KR20100072203A (en) 2010-06-30
WO2009046505A1 (en) 2009-04-16
JP5442619B2 (en) 2014-03-12
US8544608B2 (en) 2013-10-01
US20100258380A1 (en) 2010-10-14
CN101821026A (en) 2010-09-01
BRPI0816606B1 (en) 2019-08-27
EP2195125B1 (en) 2014-12-03
EP2195125A1 (en) 2010-06-16
JP2010540255A (en) 2010-12-24
BE1017806A3 (en) 2009-07-07
KR101490354B1 (en) 2015-02-05
BRPI0816606A2 (en) 2018-07-10

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