EP3636366B1 - Processus de fabrication d'une feuille de bande de roulement en aluminium antidérapante - Google Patents

Processus de fabrication d'une feuille de bande de roulement en aluminium antidérapante Download PDF

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Publication number
EP3636366B1
EP3636366B1 EP18382712.0A EP18382712A EP3636366B1 EP 3636366 B1 EP3636366 B1 EP 3636366B1 EP 18382712 A EP18382712 A EP 18382712A EP 3636366 B1 EP3636366 B1 EP 3636366B1
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EP
European Patent Office
Prior art keywords
rolling stand
hot rolling
stand
pattern
aluminum
Prior art date
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Application number
EP18382712.0A
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German (de)
English (en)
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EP3636366A1 (fr
Inventor
Gerardo Caniego Harinero
David Adrian Marín
Franklin Hernández Hernández
Carlos Ventura García
Silvia Rial Dominguez
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Grupo Valenciana De Aluminio Baux SL
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Grupo Valenciana De Aluminio Baux SL
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Priority to EP18382712.0A priority Critical patent/EP3636366B1/fr
Priority to ES18382712T priority patent/ES2907234T3/es
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0605—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two belts, e.g. Hazelett-process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/003—Aluminium alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001—Aluminium or its alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
    • B21H8/005—Embossing sheets or rolls

Definitions

  • the present invention relates to a process for the manufacture of non-skid aluminum tread sheets.
  • the process comprises continuously casting, hot rolling, pattern rolling, and annealing an aluminum alloy.
  • Non-skid aluminum tread sheets show a regular pattern that protrudes or is embedded in the material on at least one of its faces.
  • the figures that generate the relief of the sheet can present different morphologies, normally including diamond shapes, almond or chopsticks. It is a material used in a wide range of applications among which stand out the manufacture of surfaces with high grip to avoid slips, such as stairs or industrial floors, but they are also used in decorative applications, tool boxes, truck floors, wall coverings, and so on. In all these applications the material must provide sufficient mechanical stability and a shiny surface with good surface quality, according to the customer's requirements. Factors such as lightness make the manufacture in aluminum alloys of non-slip tread sheets is especially required in industries such as automotive.
  • Aluminum alloys currently offered in the market include the ones of 1000, 3000, 5000, 6000, and 7000 series.
  • alloys typically employed for the manufacture of aluminum tread sheets are the following: EN AW-1050A, EN AW-3003, EN AW-3103, EN AW-5026, EN AW-5052, EN AW-5083, EN AW-5086, EN AW-5754, EN AW-6061, EN AW-6082, and EN AW-7020, in accordance with EN 573-3.
  • the manufacture of aluminum from the Hazelett twin belt continuous casting is a reliable process commonly used for the manufacture of aluminum series with narrow solidification ranges, which include series 1XXX, 3XXX and in development 5XXX.
  • the continuous casting of twin belts offers the possibility of a high productivity compared to conventional direct chill (DC) casting systems working with very high solidification speeds, which allow maintaining aluminum band productivity in 14 to 20 mm at a speed typically between 7.0 and 11 m/min at the pouring outlet.
  • Continuous casting (CC) of aluminum alloys can result in substantial energy savings and total conversion cost savings.
  • the alloy composition and the processing steps must be carefully controlled to obtain a final product with the mechanical and aesthetic properties required for the specific use. This is particularly relevant when using aluminum scraps, which are non-heat-treatable aluminum alloys, namely are hardenable by cold working, but not by heat treatment.
  • processes disclosed in the prior art incorporate one or more steps selected from an homogenizing step, a cold rolling step, or an annealing step before the pattern rolling. Therefore, known processes for the preparation of aluminum tread sheets are discontinuous.
  • WO 2009082495 discloses a method for producing a non-heat-treatable high strength aluminum sheet from aluminum scraps using a continuous caster.
  • US 2015321232 discloses an apparatus and method for rolling aluminum sheets.
  • US 2017157655 discloses an apparatus and method for applying an electro discharge texturing to an aluminum sheet.
  • Inventors have developed a new process for the manufacture of non-skid aluminum tread sheets which is carried out in a system (called herein “Hazelett compact mini-plant” or simply “compact mini-plant”) wherein an aluminum alloy is continuously casted into a slab, which is subjected to hot rolling in a hot rolling mill having at least two stands where the last stand works as pattern rolling in a continuous process. No homogenizing, cold rolling, or annealing step is performed before the pattern rolling step.
  • the process of the present disclosure allows manufacturing aluminum tread sheets or coils into a single production line with reduced casting and rolling times, while allows obtaining a product fulfilling the market requirements, namely according to the UNE 1386 standard. This results in substantial energy savings and total conversion cost savings.
  • an aspect of the invention is a process for the manufacture of a non-skid aluminum tread sheet comprising the steps of:
  • hot rolling means a process to reduce the thickness of an aluminum strip or sheet at a temperature above about 180 °C.
  • neutral point refers to the point where the velocity of working rolls and sheet velocity are equal.
  • the term “crown” refers to the geometrical shape of the working rolls including concavity, convexity or flat shape.
  • set up conditions refers to all the arrangements to guarantee a successful start of the casting.
  • set up load for the gap between the rolls calibration refers to the load applied to the working rolls in order to set the zero value of the gap between the rolls.
  • rolling conditions refers to the stabilized conditions of the system which led to obtain good mechanical and aesthetic properties.
  • emulsion oil concentration refers to the percentage of the oil emulsified with the water used as lubrication and refrigeration.
  • initial overspeed refers to the increase in speed of the working rolls in comparison to the slab speed during the initial biting process.
  • belt wrapper tension refers to the tension of the wrapper that embrace the sheet when treading in the coiler.
  • speed of blowing air at hot rolling exit refers to the air exit speed at the nozzle pointing to the aluminum sheet at the exit of the pattern rolling.
  • %Red reduction at stand 3
  • specific coiler tension refers to the tension that the coiler applies to the sheet during the winding.
  • roll bend load application refers to the load applied at the housings of the working rolls in order to separate them.
  • the process of the present disclosure for the manufacture of aluminum tread sheets comprises continuously casting an aluminum alloy into an aluminum slab, hot rolling the aluminum slab to form an aluminum sheet, pattern rolling the aluminum sheet in order to obtain a tread sheet, and subjecting the tread sheet to annealing.
  • the process is carried out in specific conditions in order to get a sheet product with the required thickness, and the required mechanical and aesthetic properties.
  • step c) after the at least one hot rolling stand, an aluminum sheet having a thickness from 1.9 mm to 8.3 mm, or from 1.9 mm to 7.1 mm, and being at a temperature from 230 °C to 300 °C is obtained and is subsequently carried to the pattern rolling stand.
  • the tread sheet obtained in step d) is at a temperature from 200 °C to 250 °C.
  • the aluminum alloy is derived from aluminum scrap.
  • Aluminum scrap include, without being limited to, non-heat-treatable aluminum alloys such as, for example, Aluminum Association (AA) alloys 1XXX, 3XXX and 5XXX
  • wrought aluminum alloys of the 1XXX series relates to controlled unalloyed (pure) composition having a minimum of 99.0% aluminum; the ones of the 3XXX series relates to alloys in which manganese is the principal alloying element; and the ones of the 5XXX series relates to alloys in which magnesium is the principal alloying element.
  • the herein called "compact mini-plant system” used in the process of the present disclosure includes the continuous casting of twin belt together with a hot rolling mill in which the solidified aluminum band is fed directly, allowing the residual heat of the band to be used as a source for hot rolling. Additionally, after hot rolling, pattern rolling is carried out in a continuous process.
  • tread sheets particularly in the form of coils
  • the manufacture of tread sheets begins with the fusion of the aluminum alloy.
  • contaminated aluminum scrap presence of paint, oils, and so on
  • the aluminum alloy is transferred to a melting and holding furnace where fusion is completed, optionally, with the addition of clean aluminum scrap or internal aluminum cuts generated by the process.
  • the molten aluminum alloy is then degassed and filtered in degassing and filtering devices to reduce dissolved gases and inclusions in the molten aluminum alloy.
  • a molten aluminum alloy is continuously cast in a continuous caster in order to form an aluminum slab having the required thickness.
  • the aluminum slab can be prepared by any continuous casting technique well known to those skilled in the art such as by a twin belt casting.
  • the continuous caster is a Hazelett twin belt caster.
  • temperature of the metal at the entrance to the caster is usually from 675 to 690 °C.
  • the metal is solidified in the machine of twin belt that is be internally cooled with water.
  • the solidified aluminum slab leaves the caster at a speed from 7.0 to 11.0 m/min, a thickness of 14 to 20 mm, such as of 19 mm, and a temperature from 400 to 550 °C, depending on the conditions of the furnaces, casting, and transverse position of the measure.
  • the aluminum band passes on its way to the hot rolling mill through a pinch roll that applies a lower speed of advance with respect to the casting system to cause a better compaction of the metal inside the machine.
  • the reduction of the speed of advance is from 0.01 m/min to 0.07 m/min.
  • the aluminum sheet at its exit from the pinch-roll is driven by an inlet table to the hot rolling mill. Then, through several stands, wherein the last one is a pattern rolling stand, the aluminum sheet thickness is progressively reduced from the initial thickness, such as of 19 mm, to the final thickness of the tread sheet at the exit from the pattern rolling mill.
  • the aluminum alloy is of the 3XXX series and tread sheet thickness is from 2.0 to 4.0 mm; or the aluminum alloy is of the 5XXX series and the tread sheet thickness is from 2.3 to 3.5 mm; or the aluminum alloy is of the 1XXX series and tread sheet thickness is from 1.3 to 5.0 mm at the exit from the pattern rolling mill.
  • the thickness of the aluminum sheet during pattern rolling is reduced from 20% to 40%. Additionally, the thickness of the aluminum slab during hot rolling and before entering the pattern rolling stand can be reduced a total of 40% to 92%.
  • the pattern rolling stand there are two hot rolling stands (stands 1 and 2), wherein the aluminum slab is transformed in the stand 1 to an aluminum sheet having a first thickness and it is subsequently passed through the stand 2 to obtain an aluminum sheet having a second thickness, and wherein the thickness of the aluminum slab is reduced a 35-70% in the stand 1 and thickness of the aluminum sheet that exits from stand 1 is reduced a 35-70% in the stand 2.
  • a lubricant can be applied.
  • the temperature of the aluminum sheet decreases progressively by contact with the air and by the irrigation of a lubricant acting as well as a cooling system.
  • oil-in-water emulsions can be used as lubricants.
  • the oil content of the lubrication-cooling system in form of an emulsion can be adjusted depending on the alloy series to be treated, particularly emulsions with an oil content of 3.5 to 4.0% for the 3XXX series, of 3.0 to 3.5% for the 1XXX series, and of 4.0 to 4.5% for the 5XXX series.
  • Oil-in-water emulsions useful as lubricants in the process of the present disclosure are known by those skilled in the art and are commercially available.
  • oil-in-water emulsions can comprise several components selected from the group consisting of mineral oils, emulsifier, esters, fatty acids, detergents, and high pressure additives, and mixtures thereof.
  • the aluminum sheet As it passes through the different rolling boxes, due to the contact with the lubricant emulsion, the aluminum sheet progressively loses temperature until it reaches a temperature from 180 to 250 °C at the exit of the pattern rolling stand.
  • the application of the lubricating emulsion is maintained with low flow at the edges of the sheet and with high flow in the central zone in order to achieve adequate product flatness, in combination with the other rolling conditions.
  • a lubricant which is an oil-in-water emulsion is applied over the aluminum sheet, the aluminum sheet having edges and a central area, wherein the lubricant is applied in an amount at the edges of the sheet is lower than the amount of lubricant applied at the center area.
  • air blowing at maximum speed can be applied on the surface of the aluminum sheet at the the outlet of the last rolling stand, i.e. of the pattern rolling stand.
  • overspeed of the pattern rolling stand is set at a maximum of 0.5 m/s, i.e. from 0 to 0.5 m/s, to allow the centering of the aluminum band, what is necessary to drive the sheet to the coiler.
  • hot and pattern rolling can be performed in a 3-stand tandem mill, wherein the third stand (stand 3) is provided with embossing rolls in order to obtain the tread sheet product.
  • the hot rolling mill has three stands, namely, stand 1, stand 2, and stand 3. In stands 1 and 2, hot rolling itself is carried out, and the aluminum sheet exiting stand 2 is subjected to pattern rolling in a continuous process in stand 3.
  • the set up load for the gap between rolls calibration is from 100 to 300 tones (t). Additionally, the starting thickness of the different boxes is set up accordingly.
  • the starting thickness of the different stands for aluminum alloys of the 3XXX series can be fixed to 5.5 to 6.5 mm in the second hot rolling stand (stand 2), and to 4.7 to 5.3 mm in the pattern rolling stand (stand 3); for aluminum alloys of the 1XXX series can be fixed to 5.5 to 6.5 mm in the second hot rolling stand (stand 2), and to 4.4 to 5.0 mm in the pattern rolling stand (stand 3); and for aluminum alloys of the 5XXX series can be fixed to 6.4 to 7.0 mm in the second hot rolling stand (stand 2), and to 5.0 to 5.5 mm in the pattern rolling stand (stand 3).
  • the hot rolling is carried out in a hot rolling mill having two hot rolling stands (stands 1 and 2) and one pattern rolling stand (stand 3), and one of the hot rolling stands (stand 2) is next to the pattern rolling stand, and when the aluminum alloy is of the 3XXX and 5XXX series, the process comprises applying a specific tension of 0.20 to 0.23 Kg/mm 2 between the hot rolling stand which is placed next to the pattern rolling stand and the pattern rolling stand, and a pattern rolling stand output specific tension from 1.3 to 2.0 Kg/mm 2 , such as of 1.8 mm 2 , and when the aluminum alloy is of 1XXX series, the process comprises applying a specific tension of 0.08 to 0.10 Kg/mm 2 between the hot rolling stand which is placed next to the pattern rolling stand and the pattern rolling stand, and a pattern rolling stand output specific tension of 1.0 to 1.7 Kg/
  • the embossing roll in the pattern rolling stand can have a roughness of 0.3 to 0.9 ⁇ m, such as 0.7 ⁇ m, and a flat mechanical crown.
  • Roughness of rolls of the hot rolling stands is usually from 1.0 to 1.3 ⁇ m. Additionally, rolls of the hot rolling stands usually have a negative crown.
  • annealing of the tread sheet is carried out at a temperature of 400 to 480 °C, particularly of up to 450 °C for 1XXX and 5XXX series, and up to 480 °C for 3XXX series.
  • the annealing step is carried out under an inert gas, such as nitrogen, having an oxygen level below 2000 ppm during a minimum of 1 hour, and then the oxygen level is increased until reaching the atmospheric levels for at least 1 or 2 hour while maintaining the temperature as mentioned above.
  • an inert gas such as nitrogen
  • the final annealed product is usually produced in coiled form.
  • the obtained tread sheet can be coiled before the annealing step in order to produce an annealed product in form of a coil.
  • the process of the present disclosure take advantage of the residual latent heat of the pattern rolled and, optionally, coiled product in the annealing step.
  • the tread sheet or coil is cooled down at room temperature such as by air.
  • a molten aluminum alloy was continuously casted in a Hazelett twin belt caster at a temperature from 675 to 690 °C.
  • the aluminum band On its way to the hot rolling mill, the aluminum band was passed through a pinch roll and, subsequently, was driven by an inlet table to a 3-stand tandem mill. Hot rolling itself was performed in the first two stands (stands 1 and 2) and pattern rolling was performed in a third stand (stand 3) having embossing rolls, in order to obtain an aluminum tread sheet.
  • Table 1 the main process parameters and the corresponding value ranges are shown for Examples of the present disclosure and comparative examples.
  • Table 1 1XXXX 3XXX 5XXX Comp. Ex. 1
  • Example 1 Comp. Ex. 2 Example 2 Comp. Ex. 3
  • Example 3 Regular Coil Tread Plate Regular Coil Tread Plate Regular Coil Tread Plate Hot Rolling Tread Plate Roll (Stand 3) Roughness ( ⁇ m) 1.2 - 1.4 0.3 - 0.9 1.3 - 1.6 0.3 - 0.9 1.3 - 1.6 0.3 - 0.9 Crown ( ⁇ m) -0.15 (Negative) 0 (Flat) -0.15 (Negative) 0 (Flat) -0.15 (Negative) 0 (Flat) Set Up Conditions Set Up Load for Gap Between Rolls Calibration (t) 300 100-300 300 100-300 300 100-300 Emulsion Oil Concentration (%) 4.0 3.0 - 3.5 4.5 3.5 - 4.0
  • the aluminum tread sheet is led to the coiler where the wrapper belt begins to wind the coil with a pressure of 80 bar.
  • Coils of 8.5 t manufactured at a time of 16-18 min per unit were then subjected to a heat treatment at a temperature of 400 °C in a controlled atmosphere by injection of an inert gas (nitrogen having an oxygen level below 2000 ppm) during a minimum of 1 h. Then, the oxygen level were increased until reaching the atmospheric levels and the temperature was maintained for at least 1 hours, such as for 2 hours. Coils were left to cool at room temperature. Finally, coils were subjected to a process of cutting edges to eliminate the lateral cracks formed during the hot rolling process and adapt the width of the coil to the requirements demanded by the market.
  • an inert gas nitrogen having an oxygen level below 2000 ppm

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metal Rolling (AREA)

Claims (15)

  1. Un procédé de fabrication d'une tôle striée en aluminium antidérapante comprenant les étapes consistant à :
    a) fournir un alliage d'aluminium fondu ;
    b) couler en continu l'alliage dans une coulée continue en formant une plaque d'aluminium ayant une épaisseur de 14 à 20 mm et étant à une température de 400 °C à 550 °C ;
    c) laminer à chaud en continu la plaque d'aluminium obtenue à l'étape b) pour former une tôle striée qui a une épaisseur de 1,3 mm à 5,0 mm, dans lequel le laminage à chaud est effectué dans un laminoir à chaud ayant au moins deux cages comprenant au moins une cage de laminage à chaud et une cage de laminage à motifs, et dans lequel la cage de laminage à motifs est placée après l'au moins une cage de laminage à chaud ; et
    d) soumettre la tôle striée obtenue à l'étape c) à un recuit ;
    dans lequel le procédé est effectué sans réaliser aucune étape d'homogénéisation, de laminage à froid ou de recuit avant l'étape de laminage à motifs.
  2. Le procédé selon la revendication 1, dans lequel à l'étape c), après l'au moins cage de laminage à chaud, une tôle d'aluminium ayant une épaisseur de 1,9 à 8,3 mm et étant à une température de 230 °C à 300 °C est obtenue, et est ensuite transportée à la cage de laminage à motifs.
  3. Le procédé selon les revendications 1 ou 2, dans lequel la tôle striée obtenue à l'étape d) est à une température de 200 °C à 250 °C.
  4. Le procédé selon l'une quelconque des revendications 1 à 3, dans lequel l'étape c) comprend en outre l'application d'un lubrifiant dans la cage de laminage à motifs sur la tôle d'aluminium, la tôle d'aluminium ayant des bords et une zone centrale, dans lequel le lubrifiant est une émulsion huile dans eau et est appliqué en une quantité sur les bords de la tôle qui est inférieure à la quantité de lubrifiant appliquée au niveau de la zone centrale.
  5. Le procédé selon l'une quelconque des revendications 1 à 4, dans lequel la coulée continue est une coulée à double courroie Hazelett.
  6. Le procédé selon l'une quelconque des revendications 1 à 5, dans lequel la survitesse de la cage de laminage à motifs est de 0 à 0,5 m/s.
  7. Le procédé selon l'une quelconque des revendications 1 à 6, dans lequel le laminoir à chaud a trois cages.
  8. Le procédé selon l'une quelconque des revendications 1 à 7, dans lequel l'alliage d'aluminium est un alliage d'aluminium non traitable thermiquement.
  9. Le procédé selon la revendication 8, dans lequel l'alliage d'aluminium non traitable thermiquement est choisi parmi les séries AA 1XXX, 3XXX et 5XXX
  10. Le procédé selon la revendication 9, dans lequel l'alliage d'aluminium est de la série 3XXX ou 5XXX, dans lequel le laminage à chaud est effectué dans un laminoir à chaud ayant deux cages de laminage à chaud et une cage de laminage à motifs, l'une des cages de laminage à chaud est située à côté de la cage de laminage à motifs, et le procédé comprend appliquer une tension spécifique de 0,20 à 0,23 Kg/mm2 entre la cage de laminage à chaud qui est placée à côté de la cage de laminage à motifs et la cage de laminage à motifs, et une tension spécifique de sortie à la cage de laminage à motifs de 1,3 à 2,0 mm2.
  11. Le procédé selon la revendication 9, dans lequel l'alliage d'aluminium est de la série 1XXX, dans lequel le laminage à chaud est effectué dans un laminoir à chaud ayant deux cages de laminage à chaud et une cage de laminage à motifs, l'une des cages de laminage à chaud est située à côté de la cage de laminage à motifs, et le procédé comprend appliquer une tension spécifique de 0,08 à 0,10 Kg/mm2 entre la cage de laminage à chaud qui est placée à côté de la cage de laminage à motifs et la cage de laminage à motifs, et la tension spécifique de sortie à la cage de laminage à motifs de 1,0 à 1,7 Kg/mm2.
  12. Le procédé selon l'une quelconque des revendications 9 ou 10, dans lequel l'alliage d'aluminium est de la série 3XXX et l'épaisseur de la tôle striée est de 2,0 à 4,0 mm, ou l'alliage d'aluminium est de la série 5XXX et l'épaisseur de la tôle striée est de 2,3 à 3,5 mm.
  13. Le procédé selon l'une quelconque des revendications 9 ou 11, dans lequel l'alliage d'aluminium est de la série 1XXX et l'épaisseur de la tôle striée est de 1,3 à 5,0 mm.
  14. Le procédé selon l'une quelconque des revendications 1 à 13, dans lequel le recuit de la tôle striée est effectué à une température allant de 400 à 480 °C.
  15. Le procédé selon l'une quelconque des revendications 1 à 14, dans lequel le recuit est effectué sous un gaz inerte ayant un niveau d'oxygène inférieur à 2000 ppm pendant un minimum de 1 heure, et puis le niveau d'oxygène est augmenté jusqu'à atteindre les niveaux atmosphériques pendant au moins 1 heure.
EP18382712.0A 2018-10-09 2018-10-09 Processus de fabrication d'une feuille de bande de roulement en aluminium antidérapante Active EP3636366B1 (fr)

Priority Applications (2)

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EP18382712.0A EP3636366B1 (fr) 2018-10-09 2018-10-09 Processus de fabrication d'une feuille de bande de roulement en aluminium antidérapante
ES18382712T ES2907234T3 (es) 2018-10-09 2018-10-09 Proceso para la fabricación de una chapa estriada de aluminio antideslizante

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EP18382712.0A EP3636366B1 (fr) 2018-10-09 2018-10-09 Processus de fabrication d'une feuille de bande de roulement en aluminium antidérapante

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EP3636366B1 true EP3636366B1 (fr) 2021-12-08

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Cited By (1)

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WO2023151433A1 (fr) * 2022-02-10 2023-08-17 山东南山铝业股份有限公司 Procédé de production avec maintien de qualité de recyclage respectueux de l'environnement pour plaque automobile à haute formabilité de série 6

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Publication number Priority date Publication date Assignee Title
US20090159160A1 (en) * 2007-12-20 2009-06-25 Commonwealth Industries, Inc. Method for making high strength aluminum alloy sheet and products made by same
MX2016014751A (es) * 2014-05-12 2017-05-25 Arconic Inc Aparato y metodo para la laminacion de metal.
US11130160B2 (en) * 2015-12-04 2021-09-28 Arconic Technologies Llc Embossing for electro discharge textured sheet

Non-Patent Citations (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023151433A1 (fr) * 2022-02-10 2023-08-17 山东南山铝业股份有限公司 Procédé de production avec maintien de qualité de recyclage respectueux de l'environnement pour plaque automobile à haute formabilité de série 6

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ES2907234T3 (es) 2022-04-22

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