EP3254773B1 - Procédé et dispositif de conditionnement structurel d'un cylindre - Google Patents

Procédé et dispositif de conditionnement structurel d'un cylindre Download PDF

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Publication number
EP3254773B1
EP3254773B1 EP17174057.4A EP17174057A EP3254773B1 EP 3254773 B1 EP3254773 B1 EP 3254773B1 EP 17174057 A EP17174057 A EP 17174057A EP 3254773 B1 EP3254773 B1 EP 3254773B1
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EP
European Patent Office
Prior art keywords
roll
pressure
roller
tool
hardness
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EP17174057.4A
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German (de)
English (en)
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EP3254773A1 (fr
Inventor
Stephan Draese
Jan Hendrik HOLTZ
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Speira GmbH
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Speira GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
    • B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution
    • B24B39/045—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution the working tool being composed of a plurality of working rolls or balls
    • 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
    • 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
    • B21B27/02—Shape or construction of rolls
    • B21B27/021—Rolls for sheets or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • 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
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/26—Hardness of the roll surface
    • 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
    • B21B27/005—Rolls with a roughened or textured surface; Methods for making same

Definitions

  • the invention relates to a method for structural conditioning of a roll.
  • the invention further relates to a device for the structural conditioning of a roller by carrying out this method with a pressure tool and with a means for rotating a roller relative to the pressure tool.
  • the invention also relates to a roller for forming materials.
  • German patent application DE 10 2013 105 399 A1 discloses a generic device and a method for conditioning a roll surface, with a conditioning tool mechanically removing dirt, in particular a coating, from the surface of a roll.
  • Rolls arranged in roll stands are used for the plastic deformation of materials.
  • the rolls in particular the work rolls of roll stands for hot or cold rolling of metal strips, are preferably in direct contact with the roll body and the surface of the material and are used to shape the rolled product by transferring pressure.
  • Rollers are used, for example, in the production of metal strips and metal foils, with materials such as aluminum, steel or their alloys and non-ferrous metals being formed.
  • the mechanical properties of the rollers must be designed, for example, for rolling different materials, especially hard and thin materials. Irregularities in the material to be rolled can put a lot of strain on the rolls, especially the work rolls. It is problematic, for example, when creases form, ie material is doubled in the roll gap during rolling. This can happen, for example, when the beginning of the strip is being wound up and inserted into the roll gap.
  • Material doubling causes thickening in the to rolling strip, which can damage the work rolls during rolling in such a way that, for example, imprints of this material doubling can be seen in subsequently rolled strip areas. This damage is therefore particularly problematic when it comes to work rolls from finishing rolling passes, for example. In this respect, it is necessary to provide work rolls that are insensitive to corresponding errors.
  • the decisive factor for the quality of the structure of the rolls and thus for a reliable rolling result is not only the surface hardness, but also the internal stress of the roll material. This results from the stress profile of the roll material in the radial direction, i.e. in the depth of the material.
  • a certain surface hardness and internal stress are usually set as far as possible during manufacture of the roll.
  • the problem is that the rollers are subject to wear after a certain period of use and therefore have to be regularly reground. This changes both the surface hardness and the internal stress of the roll material. This can lead to rolling defects occurring again and the rolls having to be replaced or reselected and assigned to other work steps, e.g. pre-rolling steps. Even with newly manufactured rolls, the problem can arise that these have variations in surface hardness and internal stress from roll to roll and/or over the barrel length of the roll. This means that newly used rolls must also be pre-sorted and may initially only be suitable for certain work steps, for example for a pre-rolling step or for rolling passes with low pass reductions.
  • the present invention is based on the object of specifying a method for treating a roll, with which the material properties of a roll can be adjusted in a process-reliable and uniform manner. Furthermore, a device for carrying out the method and an advantageous roller are to be proposed.
  • a roller and at least one pressure tool are rotated relative to one another, in which the roller is subjected to pressure locally via the at least one pressure element by means of the at least one pressure tool, which has at least one pressure element and in which the at least one pressure tool and the work roll are moved relative to one another in the axial direction of the work roll with a feed, so that at least one surface section of the roll is subjected to pressure via the at least one pressure element, so that a deep rolling process is carried out.
  • a pressure tool with a pressure element is always mentioned below.
  • the at least one pressure tool and the at least one pressure element are meant in each case.
  • the roller Since the roller is subjected to local pressure via the pressure element, not only the surface hardness can be adjusted by strain hardening of the surface layers.
  • the residual stress of the material close to the surface can also be influenced in a defined manner. It was recognized that the homogeneous and defined adjustment of the compressive residual stresses near the surface of the roll body down to a depth of about 0.2 to 0.3 mm can decisively change the properties of the roll.
  • the method according to the invention ensures this in a reproducible manner. This is in contrast to the hardening processes that are otherwise customary in connection with rollers, for example inductive feed hardening.
  • hardening of the roll body can be achieved by stepwise, inductive annealing and subsequent quenching, but a defined setting of the internal stress in the surface layers or areas close to the surface of the roll body cannot be achieved in this way. In principle, this also applies to the "total barrel hardening" process, in which the entire barrel is annealed and quenched. At the same time, a particularly smooth surface with little roughness can also be set by cold-forming the surface using the method described.
  • the pressure element applies pressure locally to the roller.
  • the roller and the pressure tool are rotated relative to each other.
  • the pressure tool is moved at least partially along a section of the roller in the axial direction of the roller.
  • a flat section of the roller can thus be conditioned.
  • the relative movement of the pressure tool can, for example, run parallel to the roller axis.
  • the pressure tool can, for example, follow the contour of the surface of the roller in some areas.
  • the Roller rotates fixed and moves the pressure tool in the axial direction of the roller.
  • the method described here thus advantageously combines adjustment of the surface hardness by strain hardening of the surface layers and adjustment of the internal stress in areas close to the surface, i.e. the surface layers, with the provision of a particularly uniform surface, with these properties being able to be achieved very homogeneously and reliably.
  • Conditioning of the working surface i.e. the barrel of a working roll
  • the rolling surfaces of work rolls are subject to high material requirements during use, which can be adjusted using the method described.
  • the conditioned surface portion can also extend substantially over the entire surface of the work roll.
  • bearing surfaces can also be conditioned.
  • rollers that have already been used and, for example, that have been ground down for further use It is possible to adjust the material properties of rollers that have already been used and, for example, that have been ground down for further use. It has been found that with the method described, a surface hardness can be set, in particular in the barrel of a work roll, which is similar to the surface hardness when the rolls are new or even exceeds this surface hardness. At the same time, the internal stress in the surface layer is increased, so that a Imprints of surface patterns, for example in the case of material doubling, can be suppressed. As already explained, rollers that are in new condition are often also subject to strong fluctuations in hardness and internal stress. By conditioning with the method described, new rolls can therefore also be adjusted uniformly with regard to the mechanical properties, which makes it easier to select the rolls for the rolling passes.
  • the pressure tool comprises a deep-rolling tool or a deep-rolling process is carried out in the method.
  • Deep rolling is to be distinguished from burnishing and burnishing methods. Smooth rolling involves setting a high surface quality in terms of the smoothness of the surface, with the material being little or not affected in terms of surface hardness and residual stress near the surface. During burnishing, the surface of the work roll is removed by fine machining with roughened tool surfaces. Deep rolling, on the other hand, is not a machining process. A surface hardening and an increase in the internal stress in the areas close to the surface are brought about.
  • a work roll of a roll stand for hot or cold rolling of metal strips is preferably conditioned. It has been shown that work rolls can be specifically prepared or prepared for specific rolling areas, e.g. roughing passes or finishing passes.
  • the appropriately conditioned work rolls show significantly fewer problems with regard to the imprinting of surface patterns in the event of prior wrinkling or material doubling, for example when winding or threading the strip or foil in the roll gap in the further rolling process.
  • a work roll consisting at least partially or entirely of steel is preferably conditioned.
  • the Surface of the work roll preferably partially made of martensitic steel. Due to its strength properties, martensitic steel in particular is suitable for use in work rolls and can be advantageously adjusted in structure and residual stress using the method described.
  • a surface-removing process is also carried out on the roller.
  • the method according to the invention can, for example, be combined with a smoothing of the roll, as is usually carried out at certain intervals during rolling operation.
  • the roller surface can be ground or milled in combination with the method according to the invention.
  • the surface removal process can be carried out before or after using the printing tool.
  • the surface-removing process is preferably carried out after the pressure tool has been used, in order to prepare the surface of the roll for carrying out subsequent rolling processes. In terms of process times, it is advantageous to carry out a surface-removing process simultaneously with the treatment by the pressure tool.
  • a grinding tool or milling tool can be arranged next to the pressure tool and moved at the same time as the feed in order to machine the roller.
  • a pressure-loaded pressure element comprising a rotatable ball or a rotatable cylindrical roller.
  • the ball or roller consists in particular of a hard metal or a ceramic. Due to the rotatable arrangement, less wear is achieved on both the pressure element and the roller surface and a higher surface quality is achieved.
  • the ball or roller may be placed in a housing and in contact with the roller on one side of the housing, while the ball or roller is subjected to pressure generated hydraulically or pneumatically from the opposite side. This provides an easy way to apply controllable pressure to the surface of the roller.
  • balls or rollers offer a very small Active surface, which is in contact with the roll, whereby a very high pressure can be exerted on the surface of the roll, for example the working surface of a work roll, and thus a high penetration depth of the structural change in the steel is ensured.
  • the diameter of the ball or the roller is preferably 3 - 30 mm. Ball or roller diameters of 6 - 13 mm have also proven to be advantageous for process control. If the diameter is at least 10 mm, very high process speeds can be achieved.
  • the pressure element is subjected to a pressure of at least 100 bar. With such a minimum pressure, it is already possible to achieve a great depth of penetration for adjusting the internal stress of the roller and greater surface hardnesses can also be achieved. This pressure is applied to the pressure element.
  • the pressure with which the surface of the roller is acted upon by the pressure element can be significantly higher, depending on the dimensioning of the pressure element.
  • the pressure element is subjected to a pressure of at least 200 bar or at least 300 bar. If the pressure on the pressure element is at least 400 bar, a further significant increase in surface hardness and residual stress near the surface can be achieved.
  • a pressure of 1000 bar could be regarded as an upper limit, since it is assumed that rollers are conditioned in this range in practice. In principle, higher pressures are also conceivable.
  • the pressure on the pressure element can be provided by a hydraulic device, for example using a hydraulic fluid.
  • a lubricant is used for the pressure tool and the roller. This reduces wear on the pressure element and roller and achieves a higher surface quality.
  • a grinding emulsion can be used as a lubricant.
  • such a grinding emulsion is used in providing the pressure on the pressure element in a hydraulic device.
  • the pressure tool is supplied with lubricant at the same time.
  • the method according to the invention can thus be easily integrated into the existing processes that treat the surfaces of the rolls, such as grinding the rolls, and the devices required for this.
  • a feed of 0.01 mm to 4 mm, preferably 0.1 to 0.4 mm, is used per revolution of the roller.
  • the feed is determined by the speed of the die in relation to the platen and is related to the rotation of the platen to the die. It has been found that with the range mentioned for the feed, a particularly uniform and deep-acting influencing of the internal stress can be achieved with a simultaneously high surface quality. For a higher production speed, the feed is in particular at least 0.2 mm/revolution.
  • a range of 100-250 revolutions/minute has proven to be advantageous as the rotational speed for the relative rotation of roller and printing tool. This range allows uniform treatment at high process speeds.
  • the exposed ranges for the diameter of the ball or roller of the pressure element, the feed and the pressure can advantageously with each other be combined.
  • a ball diameter of 3 - 16 mm, a feed of 0.1 - 0.4 mm/revolution at a pressure of 100 - 450 bar has proven to be a particularly noteworthy combination.
  • Further preferred combinations of ball diameter d , pressure and feed are shown in Table 1 below depending on the hardness difference ⁇ HLE to be achieved.
  • the measured values for the Leeb hardness are determined according to DIN 50156. According to DIN 50156, a distinction is made between the impact device types D/DC, DL, S and E and the measured value is marked with the respective impact device type. Measurements of lower hardness ranges are usually carried out with the impact device type D/DC and marked with HLD or HLDC ( ⁇ 500 HLD). For high Leeb hardness values, impact device type E or S is used. The hardness values given in HLE are around or above 800 HLE.
  • HLE Leeb hardness
  • the Leeb hardness of the surface is increased by at least 10 HLE in the machined section of the roll.
  • Leeb Hardness can be easily determined using a rebound hardness test.
  • An increase of 10 HLE can already be used a reel Give surface hardness equal to or greater than that of the delivery condition. It has been found that an increase of at least 25 HLE or at least 35 HLE makes a large number of rollers already in use suitable again for various roller passes, including critical roller passes. With the method described, even hardness gradients of at least 40 HLE can be introduced.
  • a hardness test of the roll is also carried out.
  • a hardness test can be carried out using static methods to determine the Brinell, Vickers or Rockwell hardness.
  • the Leeb hardness can be determined as a dynamic hardness test.
  • a hardness test can be carried out before and/or after conditioning with the pressure tool. A hardness test during conditioning is also conceivable.
  • conditioning a roller with the device advantageously combines adjustment of the surface hardness by strain hardening of the surface layers and adjustment of the internal stress in the areas near the surface with the provision of a particularly uniform surface, with these properties being achieved homogeneously and reliably can become.
  • the method can be carried out in a simple manner.
  • At least one means for carrying out a surface-removing process is provided.
  • the conditioning of a roller with a pressure tool can be combined with a smoothing of the roller, for example. Grinding or milling of the roll surface can also be combined with conditioning.
  • a surface-removing tool can be placed next to the pressure tool and moved simultaneously with the feed to machine the roll.
  • the means for carrying out a surface-removing process are preferably arranged next to the pressure tool in such a way that the surface-removing process can be carried out after the conditioning process.
  • the means for carrying out a surface-removing process are therefore arranged behind the pressure tool or the deep-rolling tool in the direction of movement.
  • the pressure element has a rotatable ball or a rotatable cylindrical roller.
  • the ball or roller consists in particular of a hard metal or a ceramic. Due to the rotatable arrangement, less wear is achieved on both the pressure element and the roller surface and a higher surface quality is achieved.
  • the ball or roller may be located in a housing and in contact with the roller on one side of the housing while the ball or roller is pressurized, for example hydraulically or pneumatically, from the opposite side. This provides a simple way of exerting an easily adjustable pressure locally on the surface of the roller.
  • balls or rollers offer a very small effective area that is in contact with the roll, resulting in very high pressure on the surface of the roll.
  • the diameter of the ball or the roller is in particular 3-30 mm or 3-16 mm. Ball or roller diameters of 6 - 13 mm have also proven to be advantageous for process control. If the diameter is at least 10 mm, very high process speeds can be achieved.
  • a pressure source is provided which is set up to apply a pressure of at least 100 bar to the pressure element.
  • a pressure of at least 200 or at least 300 bar can also be provided for further conditioning. If the pressure on the pressure element is at least 400 bar, a further significant increase in surface hardness and internal stress can be achieved. In practice, about 1000 bar can be regarded as the upper limit. However, higher values are also conceivable.
  • the pressure on the pressure element can be provided by a hydraulic device, for example.
  • the above-mentioned object is achieved with a roll, in particular a work roll for forming materials, in that the roll has at least one surface section, preferably a barrel, which has been treated using a method according to the invention.
  • the conditioning combines an adjustment of the surface hardness by strain hardening of the surface layers and an adjustment of the internal stress down to the depth of the material with the provision of a particularly smooth and uniform surface, with these properties being developed particularly homogeneously.
  • a specific structure and specific mechanical properties of the roller are set with the conditioning. These properties optimize the roll for various rolling processes.
  • the roll preferably has conditioned working surfaces which are in direct contact with the rolling stock. This applies in particular to the barrel of a work roll.
  • Treatment with the method results in a particularly uniform distribution of the mechanical surface hardness within the treated section.
  • the Leeb hardness of the surface of the roller has a maximum within the conditioned surface section standard deviation of 15 HLE, in particular a maximum standard deviation of 7.5 HLE.
  • the standard deviation is a measure of the spread of hardness at different points on the surface from the mean hardness of the surface.
  • the Leeb hardness is used as a measure of the hardness, as can be done with a dynamic hardness test.
  • the treated section to be considered can be the roll surface, i.e. the barrel of the roll. At least 5 measuring points, in particular at least 10 measuring points, should be used to determine the standard deviation. With corresponding standard deviations of the Leeb hardness, a particularly uniform and process-reliable rolling result is achieved.
  • the roll is designed as a working roll for rolling strips or foils made of metal, aluminum or an aluminum alloy.
  • foils or strips there are high demands on the rolling quality, which can be provided by the work roll.
  • the foils or strips are preferably made of aluminum, aluminum alloys, but can also be made of steel.
  • the treated areas of the roll can have a Leeb Hardness of at least 500 HLD. Higher hardnesses are also possible, so Leeb hardnesses of at least 830 HLE or at least 850 HLE can be provided.
  • a preferred range for work rolls for rolling strips or foils made of aluminum or an aluminum alloy is seen between 830 HLE and 880 HLE, since these rolls treated according to the invention are insensitive to the impression of surface patterns due to material doubling of the corresponding metal strips or foils and still have a good process speed can be brought into this state using the method according to the invention.
  • the treated areas of the roll may have undergone an increase in Leeb hardness of at least 10 HLE.
  • Major increases of at least 25 HLE or at least 35 HLE are also possible.
  • the increase in Leeb hardness is preferably between 10 HLE and 50 HLE.
  • a roller 4 is conditioned with the device 2 .
  • a means for rotating 6 the roller 4 is provided, which allows the roller 4 to rotate along a roller axis 8 and thus relative to a printing tool 10 .
  • the pressure tool 10 has at least one pressure element 12 , the work roll 4 being subjected to local pressure by means of the pressure tool 10 via the pressure element 12 .
  • a pressure 14 is applied to the pressure element 12 , which pressure is transmitted to the roller 4 in the form of a pressure 16 .
  • the pressure can be generated hydraulically or pneumatically.
  • the pressure is applied to the roller 4 only locally at the point of contact with the pressure element 12 .
  • a means for moving the pressure tool 10 relative to the roller 4 is provided, which the pressure tool 10 under a feed 18 at least is moved along a portion of the roller 4, the portion of the roller 4 being pressurized via the pressure member 12.
  • a section of the roller 4 for example the roller surface or the bearing surface, is successively conditioned with a very high pressure 16.
  • the conditioning of a roller 4 combines an adjustment of the surface hardness through strain hardening of the surface layers and an adjustment of the internal stress down to the depth of the material. At the same time, a particularly smooth and even surface is provided. These properties are achieved homogeneously and reliably via the conditioned section.
  • a surface-removing process can be carried out on the roller 4 with the device 2 .
  • a surface-removing process for example grinding or milling, can preferably be carried out on the roll 4 with the device 2 after the conditioning, in order to prepare the surface of the roll for carrying out subsequent rolling processes.
  • FIG. 1 shows a schematic representation of a pressure tool 10 with a pressure element 12, such as can be used in a method or a device 2 described here.
  • the pressure element 12 is designed as a ball and is arranged in a housing 20 .
  • the pressure 14 is provided by a hydraulic device (not shown) and is transmitted to the pressure element 12 in the housing 20 using a liquid which, for example, comprises a grinding emulsion as a lubricant.
  • a very small contact area for the roller 4 is defined by the diameter of the spherical pressure element 12, whereby the local pressure 16 exerted on the roller 4 can be significantly higher than the pressure 14, which rests against the pressure element 12.
  • the surface hardness is achieved through strain hardening of the surface layers and adjustment of the internal stress down to the depth of the material.
  • FIG 3 shows a schematic representation of a roll 4 ', which is designed here as a work roll of a roll stand and has been conditioned with a method according to the invention.
  • the work roll 4' has a barrel 22, a journal 24 and a linkage 26 as areas with different functions.
  • the barrel 22 has a rolling surface which, in the case of work rolls, is usually in direct contact with the material to be rolled.
  • the structure of the barrel 22 is therefore particularly important for the rolling result, so that adjusting the surface hardness and internal stress by conditioning the barrel 22 is advantageous.
  • surfaces for conditioning can also be offered on the pin 24 .
  • the surfaces 24a - 24f can be used individually or in combination as bearing surfaces and therefore the surface hardness and internal stress can also be adjusted by conditioning. The same applies to the linkage 26.
  • any sections of the surface that are subject to corresponding structural requirements can be conditioned.
  • Substantially the entire surface of the work roll 4' can also be conditioned.
  • the conditioning causes a uniform increase in hardness.
  • the increase in Leeb hardness is plotted as a function of the pressure.
  • An increase of 10 HLE can be expected from about 150 bar with a 13mm ball. Increases of at least 25 HLE or at least 35 HLE are also possible. At a pressure of 400 bar, an increase of about 40 HLE was introduced with an identical ball.
  • the Leeb hardness was determined at different positions a - q of the conditioned bale.
  • the first position a was 25 mm from the edge of the ball.
  • the distance between the other positions was 100 mm in each case.
  • the results of this are recorded in Table 4, together with the calculated standard deviation of the Leeb hardness around the mean.
  • the unit of hardness is HLE.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)

Claims (14)

  1. Procédé pour le conditionnement structurel d'un rouleau (4, 4'),
    - dans lequel un rouleau et au moins un outil de pression (10) sont tournés l'un par rapport à l'autre,
    - dans lequel le rouleau est soumis à une pression au moyen de l'au moins un outil de pression, qui comporte au moins un élément de pression (12), localement par l'intermédiaire de l'au moins un élément de pression, et
    - dans lequel l'au moins un outil de pression est déplacé par rapport au rouleau à une avance dans la direction axiale du rouleau de sorte qu'au moins une section de surface du rouleau est soumis à pression par l'intermédiaire de l'au moins un élément de pression, de sorte qu' un procédé de roulage profond est effectué.
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'
    un rouleau de travail d'une cage de laminoir pour le laminage à chaud ou à froid de bandes ou de feuilles métalliques, en particulier de bandes ou de feuilles métalliques en aluminium ou en un alliage d'aluminium, est conditionné.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce qu'
    en outre, de préférence après le procédé de roulage profond, un processus d'enlèvement de surface est effectué sur le rouleau (4, 4').
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce qu'
    un élément de pression (12) qui peut être soumis à une pression est utilisé qui comprennent une bille rotative ou un rouleau cylindrique rotatif.
  5. Procédé selon la revendication 4,
    caractérisé en ce qu'
    une bille ou un rouleau d'un diamètre de 3 à 30 mm ou de 3 à 16 mm, de préférence de 6 à 13 mm, est utilisé.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé en ce que
    l'élément de pression (12) est soumis à une pression d'au moins 100 bars.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce qu'
    une avance de 0,01 mm à 4 mm/rotation du rouleau, de préférence de 0,1 mm à 0,4 mm/rotation du rouleau, est utilisée.
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que
    une augmentation de la dureté Leeb de la surface d'au moins 10 HLE est obtenue dans la partie usinée du rouleau.
  9. Dispositif pour le conditionnement structurel d'un rouleau (4), en particulier d'un rouleau de travail d'une cage de laminoir en réalisant un procédé selon l'une des revendications 1 à 8,
    - avec un outil de pression (10) et
    - avec des moyens (6) pour faire tourner un rouleau (4) par rapport à l'outil de pression (10), dans lequel
    - l'outil de pression (10) comporte au moins un élément de pression (12), l'élément de pression (12) est configuré pour appliquer localement une pression sur le rouleau (4), et
    - des moyens (18) pour effectuer un mouvement d'avance relatif de l'outil de pression (10) dans la direction axiale du rouleau (4) sont prévus, dans lequel au moins un moyen pour effectuer un processus d'enlèvement de surface est prévu, caractérisé en ce que
    l'outil de pression comprend un outil de roulage profond.
  10. Dispositif selon la revendication 9,
    caractérisé en ce que
    l'au moins un élément de pression (12) comporte au moins une bille rotative ou au moins un rouleau cylindrique rotatif qui peut être soumis à une pression.
  11. Dispositif selon la revendication 9 ou 10,
    caractérisé en ce qu'
    une source de pression est prévue, avec laquelle l'au moins un élément de pression (12) peut être soumis à une pression d'au moins 100 bars.
  12. Rouleau, en particulier rouleau de travail pour le formage des matériaux,
    caractérisé en ce que
    le rouleau (4, 4') a au moins une section de surface, de préférence une balle (22), qui a été traitée par un procédé selon l'une des revendications 1 à 8.
  13. Rouleau selon la revendication 12,
    caractérisé en ce que
    dans la section de la surface conditionnée, la dureté Leeb de la surface du rouleau (4) a un écart type maximum de 15 HLE, de préférence un écart type maximum de 7,5 HLE.
  14. Rouleau selon la revendication 12 ou 13,
    caractérisé en ce que
    le rouleau (4) est conçu comme un rouleau de travail pour le laminage de feuilles ou de bandes, de préférence pour le laminage de feuilles ou de bandes en aluminium ou en un alliage d'aluminium.
EP17174057.4A 2016-06-07 2017-06-01 Procédé et dispositif de conditionnement structurel d'un cylindre Active EP3254773B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16173305 2016-06-07

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EP3254773A1 EP3254773A1 (fr) 2017-12-13
EP3254773B1 true EP3254773B1 (fr) 2022-05-18

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EP17174057.4A Active EP3254773B1 (fr) 2016-06-07 2017-06-01 Procédé et dispositif de conditionnement structurel d'un cylindre

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US (1) US11110564B2 (fr)
EP (1) EP3254773B1 (fr)
ES (1) ES2922282T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018114689A1 (de) 2018-06-19 2019-12-19 Schaeffler Technologies AG & Co. KG Walzkörper für ein hydrostatisches Walzwerkzeug und hydrostatisches Walzwerkzeug mit dem Walzkörper

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012000463A1 (fr) * 2010-07-01 2012-01-05 Hegenscheidt-Mfd Gmbh & Co. Kg Machine servant à réaliser un galetage de renforcement sur des axes d'essieux

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878353A (en) * 1968-12-05 1975-04-15 Ingersoll Milling Machine Co Method for finishing rolls
DE2028022A1 (en) * 1970-06-08 1971-12-16 Leningradsky Institut tochnoi mek hamki i optiki UdSSR, Leningrad (Sowjetunion) Scoring metal surfaces - to improve oil retention and reduce - friction on sliding contact
FI802179A7 (fi) * 1980-07-07 1981-01-01 Valmet Oy Menetelmä ja laite kovapintaisten, valurautaisten kappaleiden, etenkin telojen, kuten terästeollisuuden vvalssien tai paperin kalanteroimistelojen valmistuksessa sekä menetelmmenetelmällä valmistettu tela, valssi tai vastaava.
DE102004008728B4 (de) * 2004-02-23 2006-06-29 Maschinenfabrik Alfing Kessler Gmbh Verfahren und Vorrichtung zur Steigerung der Dauerschwingfestigkeit, insbesondere der Biegewechselfestigkeit und der Torsionswechselfestigkeit von Kurbelwellen
US9457392B2 (en) * 2011-11-11 2016-10-04 Alcoa Inc. Apparatus and method for imparting selected topographies to aluminum sheet metal and application there for
DE102013105399A1 (de) * 2013-05-27 2014-11-27 Hydro Aluminium Rolled Products Gmbh Walzvorrichtung und Verfahren zur Konditionierung einer Walzenoberfläche
US10161839B2 (en) * 2015-11-05 2018-12-25 Yamamoto Scientific Tool Laboratory Co., Ltd. Apparatus for measuring coefficient of restitution and hardness tester

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012000463A1 (fr) * 2010-07-01 2012-01-05 Hegenscheidt-Mfd Gmbh & Co. Kg Machine servant à réaliser un galetage de renforcement sur des axes d'essieux

Also Published As

Publication number Publication date
EP3254773A1 (fr) 2017-12-13
US11110564B2 (en) 2021-09-07
ES2922282T3 (es) 2022-09-12
US20170348822A1 (en) 2017-12-07

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