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EP2483431B1 - Förderrolle einer hochtemperatur-glühstrecke - Google Patents

Förderrolle einer hochtemperatur-glühstrecke Download PDF

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Publication number
EP2483431B1
EP2483431B1 EP10770608.7A EP10770608A EP2483431B1 EP 2483431 B1 EP2483431 B1 EP 2483431B1 EP 10770608 A EP10770608 A EP 10770608A EP 2483431 B1 EP2483431 B1 EP 2483431B1
Authority
EP
European Patent Office
Prior art keywords
crown
mandrel
casing
teeth
roll according
Prior art date
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Active
Application number
EP10770608.7A
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English (en)
French (fr)
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EP2483431A1 (de
Inventor
Alain Lacombe
Olivier Drevet
Rémi BESSETTES
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Ceramics SA
Original Assignee
Herakles SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Herakles SA filed Critical Herakles SA
Publication of EP2483431A1 publication Critical patent/EP2483431A1/de
Application granted granted Critical
Publication of EP2483431B1 publication Critical patent/EP2483431B1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/562—Details
    • C21D9/563—Rolls; Drums; Roll arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/02—Skids or tracks for heavy objects
    • F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0012—Rolls; Roll arrangements

Definitions

  • the present invention relates to the field of rollers used for transporting, guiding or shaping industrial products and intended to be subjected to significant temperatures and temperature gradients.
  • the invention particularly, but not exclusively, concerns rollers for very high temperature annealing lines such as those used for the manufacture of very high performance silicon steel and in which temperatures above 1100 ° C. are reached.
  • the very high temperature annealing line must have a roll every 0.5 m to 2 m, which represents a large number of rolls.
  • Each of these rollers is also motorized and all of them synchronized to accompany the movement of the band without effort of traction and friction.
  • rollers used in this type of annealing line typically have diameters, for example but not exclusively, of the order of 100 mm and generally less than 500 mm, and a table of length generally between 500 mm and 3000 mm.
  • rollers used in this type of industry are generally made of refractory steel with surface protection (zirconia type) but do not allow to exceed 1100 ° C in the annealing lines and must be replaced frequently (every month in general ) because of their wear.
  • Ceramic or graphite rollers for higher temperatures are generally used. However, these rolls are relatively fragile, which limits their life.
  • thermostructural composite material A roll with an envelope of thermostructural composite material is disclosed by EP 2 025 422 A .
  • elastic holding elements make it possible to maintain the casing in longitudinal position on the mandrel.
  • the invention also relates to the rollers present in annealing lines of steel sheets treated at lower temperatures, typically between 600 ° C and 900 ° C, but which are subject to significant traction.
  • steel rollers are commonly used but, because of their significant coefficient of expansion, they can deform under the effect of temperature, which can lead in some cases to fold formation in the sheet metal. (commonly known as "heat buckles") or poor guidance of it (deviation).
  • these rollers are generally of greater diameter, typically between 500 mm and 1000 mm, the table up to 2000 mm.
  • the object of the present invention is to propose a new roll structure capable of operating at high temperatures, especially greater than 1100 ° C., and with a mechanical strength greater than that of the rollers of the prior art.
  • the invention also aims to propose rollers whose external geometry does not vary under the effect of high temperatures and / or during rapid temperature changes, the roll further having a design which makes it possible to replace the existing rollers without modifying the facilities.
  • the present invention relates to a high-temperature annealing line roller comprising a cylindrical envelope and at least one rocket made of metallic material mounted at one end of the cylindrical envelope, the rocket or rockets comprising a mandrel suitable for driving in rotating the cylindrical envelope, the cylindrical envelope being made of thermostructural composite material and the roll further comprising at least one holding element of the envelope on the rocket, characterized in that the holding element comprises a crown or a plurality crown segments attached to one end of said casing, each crown or ring segment being extended by at least one resilient tongue whose end is resting on the rocket, and in that each rocket further comprises a shaft drive connected to the mandrel by a frustoconical portion, the elastic tab or tongues of each ring or ring segment being in abutment on the frustoconical portion.
  • the cylindrical casing of the roll of the invention namely the body of the roller for supporting the sheets at high temperatures, is made of thermostructural composite material. Thanks to the excellent thermal, mechanical and thermomechanical performance of thermostructural composite materials, the roll of the invention is capable of operating at temperatures higher than those supported by steel, that is to say temperatures above 1100 ° C. and up to 1300 ° C, without the fragility presented by ceramic or graphite.
  • thermostructural composite materials also have structural characteristics (fiber reinforcement densified by a matrix) sufficient to withstand the loads borne by the rollers of the prior art.
  • these materials and in particular the composite material CC has a low coefficient of thermal expansion to prevent the envelope from deforming under the effect of high temperatures and keep the external geometry of the roll during the ascents or descents in temperature.
  • These combined characteristics are also particularly interesting for making rolls equipping the annealing lines of high temperature and high temperature treated sheets as they make it possible to limit the risks of "heat buckles" and of deflection.
  • the roll of the invention retains an axial support member made of metallic material comprising one or two rockets for the support and / or the driving of the roll.
  • the parts (bearings, coupling shafts, etc.) of the installations intended to cooperate with the rollers do not need to be modified to receive the rollers of the invention, which allows a standard exchange of the existing rollers. by rollers according to the invention.
  • the rocket or rockets being metal material, they have a thermal expansion coefficient higher than that of the cylindrical envelope, which causes differential expansion between these elements and the envelope.
  • the envelope is held on each rocket by means of an element comprising one or more resilient tongues resting on the rocket. This elastic connection between the cylindrical envelope and the rockets makes it possible to compensate the differential expansions between these elements both axially and radially.
  • the slope formed by the frustoconical portion ensures sufficient holding forces by the elastic tongues regardless of the stresses (particularly thermal) encountered. More specifically, by being supported on the frustoconical portion of each rocket, the resilient tongues provide both a maintenance in axial position and maintaining radial position of the cylindrical envelope relative to each rocket. Indeed, the frustoconical portion of each rocket forms a bearing surface for the resilient tongues which is inclined relative to the axial and radial planes of each rocket of the cylindrical envelope. Also, once resting on the frustoconical portion, the resilient tongues exert on the cylindrical envelope reaction forces which each comprise an axial component and a radial component which are non-zero and which make it possible to maintain positions or centerings. both axial and radial.
  • the mandrel of each rocket comprises a plurality of teeth and splines respectively engaged with splines and teeth of the casing.
  • a cold radial clearance is preferably provided between the top of the teeth of each mandrel and the bottom of the grooves of the casing and a second cold radial clearance between the top of the teeth of the casing. and the bottom of the flutes of each mandrel.
  • the cylindrical envelope is mechanically coupled to the rocket or rockets in a configuration adapted to compensate for the differential expansions between these elements, which ensures the rotational drive of the cylindrical envelope without risk of deformation of the envelope.
  • the teeth and grooves vis-à-vis have straight or inclined radial edges, forming, in the latter case, a configuration of trapezoidal type more stable for self-centering of the cylinder and sleeves.
  • the roll further comprises an annular reinforcing element disposed around each ring of the one or more holding elements.
  • the annular reinforcement element makes it possible to secure the crowns on the envelope, in particular with respect to the centrifugal forces and vibrations to which the roller is subjected during operation.
  • Each annular reinforcing element may be formed of an elastic collar of prestressed metal material or of a collar or a ring of a material having a coefficient of thermal expansion identical to or slightly greater than the material of the rings.
  • the cylindrical envelope is made of carbon-carbon composite material (C-C) which has both a low coefficient of thermal expansion and good thermal conductivity.
  • C-C carbon-carbon composite material
  • Other thermostructural composite materials having a coefficient of thermal expansion / thermal conductivity close to 0 can also be used to make the cylindrical envelope.
  • the cylindrical envelope may further comprise on its outer surface, for example, a layer of chromium or zirconia carbide, which prevents carburizing products in contact with the roller (for example sheets).
  • a particular but non-exclusive field of application of the invention is that of installations or continuous annealing lines in which strips of metal sheets, such as very high-performance steel sheets, are treated at temperatures above 1100.degree. ° C.
  • the figures 1 and 2 illustrate a roller 100 according to an embodiment of the invention which can be used interchangeably for conveying, guiding or shaping metal sheet strips in annealing lines.
  • the roll 100 comprises a table or cylindrical envelope 120 and two flares 130 and 140 mounted at each end of the cylindrical envelope.
  • the cylindrical envelope 120 consists of an axisymmetric part 121 made of thermostructural composite material, preferably carbon / carbon composite material (CC ) which, in known manner, is a material formed of a carbon fiber reinforcement densified by a carbon matrix.
  • Thermostructural composite materials such as CC material, are characterized by their high mechanical properties which make them suitable for constituting structural parts and by their ability to maintain these mechanical properties at high temperatures of up to 1300 ° C. case of the material CC.
  • the thermostructural composite material gives the casing sufficient mechanical strength to be self-supporting, that is to say, to withstand the forces to which the roller is subjected without an inner support.
  • This type of material has a low coefficient of thermal expansion (about 2.5x10 -6 ° C for the material CC) in comparison with those of metal materials such as steel (about 12x10 -6 ° C). Consequently, the envelope 120 constituting the part of the roll 100 intended to be in contact with the sheets to be treated expands very little under the effect of the temperature and does not deform due to its mechanical characteristics at high temperatures.
  • the manufacture of parts made of composite material C-C is well known. It generally comprises the production of a carbon fiber preform whose shape is close to that of the part to be manufactured and the densification of the preform by the matrix.
  • the shaping is performed by filament winding, UD web winding on a mandrel, weaving, stacking, needling of two-dimensional / three-dimensional strata or plies of cables, etc.
  • the densification of the fibrous preform can be carried out by the liquid route by impregnating the latter with a precursor resin of the carbon matrix such as a phenolic-type resin.
  • the fibrous preform intended to constitute the fibrous reinforcement of the part to be produced is shaped by conformation using a holding tool.
  • the resin or resins are then converted (polymerization / carbonization) by heat treatment.
  • the impregnation and polymerization / carbonization operations can be repeated several times if necessary to obtain specific mechanical characteristics.
  • the densification of the fiber preform may also be carried out, in a known manner, by gaseous means by chemical vapor infiltration of the carbon matrix (CVI).
  • CVI carbon matrix
  • a densification combining liquid route and gaseous route is sometimes used to facilitate implementation, limit costs and manufacturing cycles while obtaining satisfactory characteristics for the intended use.
  • the cylindrical envelope 120 may further comprise a coating (not shown on the figures 1 and 2 ) which makes it possible in particular to avoid the carburation of the metal of the sheets by the axisymmetrical part 121.
  • a surface coating can be in particular consisting of a layer of chromium carbide or zirconia.
  • a silicon carbide layer is preferably formed between the piece 121 and the chromium carbide layer to insulate the material C / C of the piece 121 of the metal of the chromium carbide layer.
  • the silicon carbide layer also acts as a bonding layer between the C / C material of the axisymmetric part 121 and the chromium carbide layer.
  • the silicon carbide and chromium carbide layers can be made by various known deposition techniques such as, for example, PVD (Physical Vapor Deposition) deposition.
  • the flares 130 and 140 are made of metal material, for example steel of the stainless steel type.
  • Each rocket 130, respectively 140 comprises a mandrel 131, respectively 141, a frustoconical portion 132, respectively 142, which is extended by a shaft 133, respectively 143.
  • the roll 100 is disposed inside an enclosure 10 of an annealing line ( figure 1 ).
  • the shafts 133 and 143 are respectively supported by bearings 11 and 12 of the enclosure 10.
  • the shaft 133 is coupled with a rotational drive motor 13 while the shaft 143 is held in the bearing 12 by a nut 14.
  • the rocket 130 comprises a series of splines 1310 annularly distributed on the outer surface of the mandrel 131 and delimiting a series of teeth 1320.
  • the mandrel 141 of the rocket 140 comprises a series of splines 1410 uniformly distributed over the surface external of the latter and delimiting a series of teeth 1420.
  • the axisymmetric piece 121 of material C / C of the cylindrical envelope 120 comprises a series of splines 1210 distributed annularly on its inner surface and delimiting a series of teeth 1220.
  • the flutes 1210 may be directly formed during the manufacture of the composite material part by conformation of the fibrous reinforcement or after manufacture of the workpiece by machining its inner surface.
  • the flares 130 and 140 are mounted at each end of the cylindrical envelope 120 by engaging, on the one hand, the teeth 1320 and 1420 respectively of the flares 130 and 140 in the grooves 1210 formed on the inner surface of the axisymmetrical part 121 of the casing 120 and, secondly, the teeth 1220 of the cylindrical casing 120 in the grooves 1310 and 1410 respectively of the rockets 130 and 140.
  • the mandrel 131 of the fuse 130 is positioned inside the cylindrical envelope 120 by providing a radial clearance between the surfaces opposite these two elements. More specifically, the mandrel 131 and the axisymmetrical part 121 of the casing 120 are dimensioned so as to provide, on the one hand, a radial clearance J1 between the top of the teeth 1320 and the bottom 1210 has grooves 1210 of the piece 121 facing the teeth 1320 and, secondly, a radial clearance J2 between the top of the teeth 1220 of the workpiece 121 and the bottom 1310a of the splines 1310 of the mandrel 131.
  • the radial clearances J1 and J2 correspond to "cold" games, that is to say games only present when the roll is at ambient temperature and which are defined to be filled during the expansion of the rockets at the temperature of roller operation.
  • part 121 of the cylindrical casing 120 made of thermostructural composite material has a coefficient of expansion much lower than that of the mandrel made of metallic material, the differential expansions between these two elements are compensated by the presence of the radial clearance between the 120 and the mandrels 131 and 141 of the flares 130 and 140.
  • the mandrel expands radially in the clearances without exerting force on the envelope, which prevents the deformation of the latter.
  • the mandrels of the rockets can be engaged in the cylindrical envelope without means for holding in radial position, the setting in radial position of the mandrels in the cylindrical envelope, or more precisely the positioning the respective teeth and grooves of the mandrels and the casing, being done automatically during the expansion of the flares at the operating temperature of the roller.
  • the casing 120 can be cold-held in the radial position on the mandrels by means of shims 115, which are respectively disposed between the adjacent edges of the teeth 1220 and the flutes 1310 or 1410.
  • the shims 115 are made of a fugitive material so as to disappear during the temperature rise.
  • the mechanical coupling between the cylindrical envelope 120 and the mandrel 110 is achieved by engaging the teeth 1320 and 1420 with the adjacent edges of the splines 1210, possibly via the adjustment wedges 115 when present.
  • the cylindrical casing 120 is further flanged in translation on the flares 130 and 140 by means of elastic holding elements 150 and 160 disposed at each end of the cylindrical casing 120.
  • each elastic holding member 150, respectively 160 is formed of two ring segments 151 and 152, respectively 161 and 162 extended by resilient tabs or lugs 153, respectively 163.
  • Each ring segment 151, 152, 161 and 162 may be formed from a metal part shaped and machined so as to form the resilient tongues 153 and 163.
  • the elastic holding elements 150 and 160 may in particular be made of high characteristic metal materials such as refractory steels of the type 15CDV6, 25CD4S , or 28CDV5 or stainless steel.
  • the elastic holding members 150 and 160 i.e. in the embodiment described herein the ring segments 151, 152 and 161, 162 are respectively attached to both ends 120 a and 120 b of the shell 120 while the tongues resilient of these elements exert a holding pressure on the rockets 130 and 140. More specifically, the elastic tabs 153 of the two segments 151 and 152 are supported on the frustoconical portion 132 of the rocket 130 while the resilient tabs 163 of the two ring segments 161 and 162 bear against the frustoconical portion 142 of the rocket 140.
  • the ring segments 151 and 152 are fixed on the end 120a of the casing 120 by screws 154 which pass through the ring segments 151 and 152 via passages and orifices 155 which are tightened into threaded portions 126 carried in the casing 120.
  • ring segments 161 and 162 are fixed to the end 120 b of the cover 120 by screws 164 which pass through the ring segments 161 and 162 via passages 165 and orifices are tightened in threaded portions made in the casing 120 ( figure 2 ).
  • these may comprise a heel, such as the heels 1510 and 1520 of the ring segments 151 and 152 shown on the drawing.
  • figure 4 which is positioned in a housing formed in the casing 120, such as the groove 127 shown in the figure 4 .
  • the ring segments can also be fixed by a foil or other. Those skilled in the art will consider without difficulty other means for fixing the elastic holding elements on the cylindrical envelope.
  • the roll 100 further comprises two annular reinforcing elements 156 and 166 disposed respectively around the ring segments 151, 152 and 161, 162.
  • each annular reinforcing element 156, 166 respectively consists of an elastic collar or ring 1560, respectively 1660, made from a strip of metal strip, for example steel with high elastic characteristics.
  • Each elastic collar is preloaded on the corresponding ring segments, that is to say by enlarging during assembly the diameter of the collar by spacing these two ends 1561 and 1562, respectively 1661 and 1662, and then releasing the ends after positioning which creates an elastic return torque used as clamping.
  • the end 1562 further comprises a pin 1564 engaged in a slot 1563 formed in the end 1561, which ensures the retention of the two ends 1561 and 1562 relative to each other.
  • the Figure 1A illustrates an alternative embodiment of an annular reinforcing element 176 formed of a collar 1760 preloaded around the ring segments 151, 152 and whose retention of its two ends 1761 and 1762 is provided by the cooperation between a bent portion end 1762 and ears 1763 forming a stop.
  • the collar may be deformed by relative sliding between the overlapping ends while maintaining the tightening torque.
  • the annular reinforcing element may be formed of a collar or split ring preloaded on the rings, the collar or the ring being made of metal material (for example steel). In this case, the ends of each collar do not overlap but deviate more or less from each other according to the temperatures encountered.
  • the reinforcing element may be formed of a collar or ring made of a material having a coefficient of thermal expansion similar to or slightly greater than that of the material of the rings. In this case, it is not necessary to provide the possibility of elastic deformation for the holding element due to the absence of differential expansions between the rings and the annular reinforcing element.
  • the elastic holding elements 150 and 160 make it possible to maintain the cylindrical casing 120 in a longitudinal position on the frustoconical portions 132 and 142 of the flares 130 and 140 in a balanced manner while absorbing the axial variations due to the differential thermal expansions between the flares and the flange. 'envelope.
  • the flares 130 and 140 expand while the cylindrical casing 120 retains its volume due to its low coefficient of expansion.
  • the frustoconical portions 132 and 142 and the elastic tabs 153 and 163 resting on them the expansion of the rockets do not cause deformation of the cylindrical envelope.
  • the elastic tabs deform slightly and slide on the frustoconical portions of the rockets with which they are in contact and thus ensure a maintenance in axial position of the envelope while compensating for differential expansions.
  • the profile or the slope of the frustoconical portions 132 and 142 is defined as a function of the amplitude of the expansion of the rockets to be absorbed. If the rockets dilate little, the frustoconical portions may have a steep slope to ensure a good maintenance of the envelope at all temperatures by the elastic tongues. On the contrary, if the rockets expand more significantly, the frustoconical portions will have a lower slope to allow sliding over a greater distance of the tabs so as to maintain the envelope without exerting too much effort on this last.
  • the elastic holding members of the invention are not limited to a structure formed of two ring segments.
  • a holding member 250 may be formed of a single ring 251 having resilient tongues 252 distributed uniformly around one end of said ring.
  • the ring 251 may comprise partial slots 253a and 253b uniformly distributed and staggered around to compensate for the stresses during possible expansion of the crown.
  • a resilient retaining member 350 is formed of four ring segments 351 to 354 each having elastic tabs 355. Regardless of the number of segments used to form the elastic holding members (1, 2, 4, etc.), the segment or segments are attached to the ends of the cylindrical envelope in the same manner as described above.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (10)

  1. Förderrolle (100) einer Hochtemperatur-Glühstrecke, umfassend eine zylindrische Hülle (120) und mindestens einen Achsschenkel (130; 140) aus einem metallischen Material, der an einem der Enden der zylindrischen Hülle montiert ist,
    wobei der mindestens eine Achsschenkel einen Dorn (131; 141) umfasst, der geeignet ist, die zylindrische Hülle (120) in Drehung anzutreiben,
    wobei die zylindrische Hülle (120) aus einem Thermostruktur-Verbundstoff besteht, wobei die Förderrolle (100) ferner mindestens ein Halteelement (150; 160) der Hülle (120) auf dem Achsschenkel (130; 140) umfasst, dadurch gekennzeichnet, dass das das Halteelement einen Kranz oder eine Vielzahl von Kranzsegmenten (151, 152; 161, 162) umfasst, die an einem Ende der Hülle befestigt sind, wobei jeder Kranz oder jedes Kranzsegment von mindestens einer elastischen Lasche (153; 163) verlängert ist, deren Ende am Achsschenkel aufliegt, und dass jeder Achsschenkel ferner eine Antriebswelle (133; 143) umfasst, die mit dem Dorn (131; 141) durch einen kegelstumpfartigen Abschnitt (132; 142) verbunden ist, wobei die elastische(n) Lasche(n) (153; 163) jedes Kranzes oder Kranzsegments (151, 152; 161, 162) auf dem kegelstumpfartigen Abschnitt aufliegt.
  2. Förderrolle nach Anspruch 1, dadurch gekennzeichnet, dass der Dorn (131; 141) jedes Achsschenkels eine Vielzahl von Zähnen (1320; 1420) und Rillen (1310; 1410) umfasst, und dass die zylindrische Hülle (120) eine Vielzahl von Zähnen (1220) und Rillen (1210) umfasst, die jeweils mit den Rillen und Zähnen jedes Dorns in Eingriff sind.
  3. Förderrolle nach Anspruch 2, dadurch gekennzeichnet, dass ein erstes Kaltradialspiel (J1) zwischen der Spitze der Zähne (1320; 1420) jedes Dorns (131; 141) und dem Boden der Rillen (1210) der Hülle (120) ausgenommen ist, und dass ein zweites Kaltradialspiel (J2) zwischen der Spitze der Zähne (1220) der Hülle (120) und dem Boden der Rillen (1310; 1410) jedes Dorns (131; 141) ausgenommen ist.
  4. Förderrolle nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass sie ferner Einstellkeile (115) umfasst, die zwischen den aneinandergrenzenden Rändern der Zähne (1320; 1420, 1220) jedes Dorns (131; 141) und der zylindrischen Hülle (120) angeordnet sind.
  5. Förderrolle nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie ferner ein ringförmiges Verstärkungselement (156; 166) umfasst, das um jeden Kranz oder jede Vielzahl von Kranzsegmenten (151, 152; 161, 162) angeordnet ist.
  6. Förderrolle nach Anspruch 5, dadurch gekennzeichnet, dass das ringförmige Verstärkungselement (156; 166) einen elastischen Kragen (1560, 1660) aus einem vorgespannten metallischen Material umfasst.
  7. Förderrolle nach Anspruch 5, dadurch gekennzeichnet, dass das ringförmige Verstärkungselement einen Kragen umfasst, der aus einem Material hergestellt ist, das einen Dehnungskoeffizienten gleich dem oder etwas größer als der Wärmedehnungskoeffizient des Kranzes oder der Kranzsegmente aufweist.
  8. Förderrolle nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die zylindrische Hülle (120) aus Verbundstoff C-C hergestellt ist.
  9. Förderrolle nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die zylindrische Hülle (120) auf ihrer Außenseite eine Zirkonschicht umfasst.
  10. Förderrolle nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die zylindrische Hülle (120) auf ihrer Außenseite eine Chromkarbidschicht umfasst.
EP10770608.7A 2009-09-29 2010-09-22 Förderrolle einer hochtemperatur-glühstrecke Active EP2483431B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0956725A FR2950631B1 (fr) 2009-09-29 2009-09-29 Rouleau de ligne de recuit haute temperature.
PCT/FR2010/051991 WO2011039452A1 (fr) 2009-09-29 2010-09-22 Rouleau de ligne de recuit haute temperature

Publications (2)

Publication Number Publication Date
EP2483431A1 EP2483431A1 (de) 2012-08-08
EP2483431B1 true EP2483431B1 (de) 2016-07-13

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EP10770608.7A Active EP2483431B1 (de) 2009-09-29 2010-09-22 Förderrolle einer hochtemperatur-glühstrecke

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EP (1) EP2483431B1 (de)
FR (1) FR2950631B1 (de)
WO (1) WO2011039452A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2975106B1 (fr) 2011-05-13 2013-06-14 Snecma Propulsion Solide Installation de traitement avec bain de metal fondu et rouleaux immerges
DE102014110565A1 (de) * 2014-07-25 2016-01-28 Montech Ag Antriebsrolle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919511B1 (fr) * 2007-07-30 2010-01-29 Snecma Propulsion Solide Rouleau composite thermostructural

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Publication number Publication date
WO2011039452A1 (fr) 2011-04-07
EP2483431A1 (de) 2012-08-08
FR2950631B1 (fr) 2013-03-08
FR2950631A1 (fr) 2011-04-01

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