[go: up one dir, main page]

WO2016071299A1 - Rouleau et procédé de fabrication dudit rouleau - Google Patents

Rouleau et procédé de fabrication dudit rouleau Download PDF

Info

Publication number
WO2016071299A1
WO2016071299A1 PCT/EP2015/075505 EP2015075505W WO2016071299A1 WO 2016071299 A1 WO2016071299 A1 WO 2016071299A1 EP 2015075505 W EP2015075505 W EP 2015075505W WO 2016071299 A1 WO2016071299 A1 WO 2016071299A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
adhesive layer
functional layer
roller
functional
Prior art date
Application number
PCT/EP2015/075505
Other languages
German (de)
English (en)
Inventor
Alexander Etschmaier
Franz Grohmann
Original Assignee
Voith Patent Gmbh
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 Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2016071299A1 publication Critical patent/WO2016071299A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/36—Guiding mechanisms
    • D21F1/40—Rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/021—Construction of the cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0246—Hard rolls

Definitions

  • the invention relates to a roller, in particular for use in a machine for producing and / or finishing a fibrous web such as a paper, board or tissue web and a method for producing such according to independent claims.
  • rollers are available in a variety of positions and with a variety of functions in the above-mentioned machines.
  • rolls with soft cover layers are suitable for pressing and dewatering the fibrous web.
  • Rollers with hard surfaces in particular also with a heating device, are mainly used for smoothing and drying.
  • these rollers are on the one hand subject to considerable corrosion due to the environment to which they are exposed. In addition to water, these come directly or indirectly in contact with the fibrous web and the additives contained therein, such as chemicals.
  • the ambient temperatures to which the roller is exposed vary.
  • such rollers must also have an extremely high abrasion resistance, depending on the intended use, since the fibrous web or such fibrous web carrying conveyors run indirectly or directly on its outer circumference.
  • the known methods and the metallic, ceramic or cermet coatings which can be produced thereby have the disadvantage that the coating structure is closed-porous to open-porous, depending on the material and / or the manufacturing process.
  • the porosity can lead to increased susceptibility to corrosion due to penetration of by-products and to adhesion problems.
  • the surface of the sprayed layer must be filled, for example by final sealing with an additional material such as a polymer.
  • the disadvantage of this is that these seals are not sufficiently resistant to abrasion and it comes to leaching during operation, in which the polymer is released from the pores. This in turn increases the risk of corrosion and adhesion of the entire coating.
  • thermal spraying is not an economical or ecological method because of the poor powder application efficiency with regard to the layer thickness that can be achieved per coating course ( ⁇ per stroke) and the percentage of powder remaining on the roller.
  • DE 101 30 313 A1 discloses an initially thermally sprayed and subsequently thermally remelted ceramic coating of a dewatering strip for a paper or board machine.
  • a drainage strip has such a short service life as a wear component that the influence of corrosion is marginal.
  • the requirements on the adhesion and abrasion resistance of the coating are low. For this reason, the thermally remelted ceramic coating is applied directly to the base material without an intermediate adhesive layer.
  • DE 20 2012 012 592 U1 describes a roller for a paper machine, comprising a roller core, with an adhesive layer and an oxide ceramic layer applied thereto.
  • the latter was coated by means of a thermal spraying method in which molten material impinges on the comparatively cold roll core and is mechanically clamped to its surface. To set a predetermined surface structure on the outer circumference of the thermally sprayed coating, this is first machined and then textured by laser radiation. By spotwise evaporation of the outer peripheral surface of the coating material of the oxide ceramic is removed. At least between the textured portions of the coating, the oxide ceramic remains porous. To prevent media from entering these cavities, the entire surface of the rollers must then be sealed by means of a polymer.
  • the object is achieved by a roller and a method for producing such with the features of the independent claims.
  • the term functional layer in the context of the present invention means a layer which comes into direct contact with the fibrous web or indirectly, for example via a conveyor belt lying between the fibrous web and functional layer, such as coverings or sieves revolving around them.
  • the functional layer thus has properties that particularly reduce corrosion and abrasion to the highest degree.
  • an adhesive layer is understood as meaning a layer which serves for the bonding between the roll core and a functional layer on the one hand. A particularly good connection of the functional layer to the roll core takes place when the adhesive layer is ductile compared to the functional layer.
  • Such a high ductility can be achieved by including or producing the adhesion layer from a nickel-aluminum alloy. Good ductility could be achieved with a blend ratio of 95% nickel and 5% aluminum, each in terms of the weight of the blend.
  • both the adhesive layer and the functional layer are part of the solid coating already applied to the roll, which is successively applied to the roll core during manufacture.
  • Functional and / or adhesive layer can be constructed from a plurality of individual layers.
  • the term "material” basically means the starting material from which the adhesive or functional layer is to be produced.
  • this means the spray additive material that is, the starting material which dissipates, melts or melts inside or outside a spray burner and accelerates in a gas flow in the form of spray particles to reach the surface of the underlying one Substrate to be thrown.
  • the spray additive material that is, the starting material which dissipates, melts or melts inside or outside a spray burner and accelerates in a gas flow in the form of spray particles to reach the surface of the underlying one Substrate to be thrown.
  • Lasercladdings material is understood to mean that material which is applied to the substrate to be coated for the purpose of producing the corresponding layer.
  • the substrate is understood to mean, after the stage of the coating produced, the radially outermost material to be directly coated, such as the roll core, the adhesive layer, the functional layer or where this makes sense, a combination thereof.
  • the term alloying region is understood to mean a metallic bond between them, as a result of the melting (with subsequent cooling) of at least two materials, with the formation of a crystalline lattice.
  • the materials of the adhesive layer and the roll core may be selected so as to form such an alloying region when they are formed together in the manufacture of the roll or in the production of the coating of the roll due to reflow by heat supply after solidification.
  • the materials of the adhesion layer and the functional layer may be selected such that they do not form such an alloy region with one another.
  • the term laser cladding or a method immediately following this is understood to mean a coating method by means of which it is possible to melt the surface to be coated-in other words, the substrate-itself or completely.
  • a high heat input is not possible in the known thermal spray processes, such as flame, high-speed flame, arc or plasma spraying, which leads to the on or melting of the substrate.
  • a melting or melting in Lasercladding can be done for example by supplying thermal energy to the substrate to be coated and can be preferably realized by radiation, such as laser radiation.
  • the material of the adhesive or functional layer is generally introduced into laser beam path in the beam path of the laser, melted and applied to the substrate.
  • the laser beam melts the surface of the substrate with respect to the radial thickness at least partially on or completely over its thickness in the radial direction, as far as such a complete melting makes sense.
  • Thermal melting in the context of the invention is a subsequent, preferably in the thickness direction partially, transient transfer of the corresponding present in solid state substrate, especially the last example by thermal spraying already prepared, radially outermost layer of the roller, in a liquid phase, in particular due to heat Understood.
  • Partial melting means that the entire surface of the substrate is melted, even successively, but not over the entire layer thickness of the coating in the radial direction of the roll, but only near the surface.
  • complete melting would mean complete melting or melting of the substrate. In the former case, therefore, said functional layer can be melted across the surface over a fraction of its layer thickness.
  • the melting takes place over the entire layer thickness, preferably until just before the transition to the underlying adhesive layer - without, however, melting the adhesive layer itself. Nevertheless, such a melting of the adhesive layer and the overlying functional layer would be conceivable.
  • the thermal melting consequently serves for the subsequent melting of the substrate, such as the layer produced last, and preferably takes place over the entire surface of the roll to be coated, to be coated.
  • the subsequent, temporary melting has the advantage, especially in the case of porous structures, that the pores are dissolved by the brief transfer of the substrate into the melt.
  • a reduction in the porosity of the substrate can be achieved.
  • the melting occurs nationwide, can be dispensed with a conventional sealing of the finished coated roll by means of polymers.
  • the melted serves and solidified layer of the substrate itself as a seal.
  • the radially outermost layer of the coating such as the functional layer, can be subsequently melted.
  • the term density of a layer basically means the mass density, measured at ambient temperature, of the layer produced by means of the thermal coating method and cooled to ambient temperature.
  • the bulk density is accordingly to be understood, which results from the quotient of the mass of the layer and the total volume, consisting of the volume of the solid and the volume of the pores.
  • Fig. 1 is a highly schematic representation of two inventively coated rolls; a highly schematic representation of the order coating according to the invention; in each case an embodiment in a highly schematic sectional view through a coating according to the invention comprising at least one thermal spray coating.
  • FIG. 1 schematically shows two rolls 1 produced according to the invention for producing and / or further processing a fibrous web, such as a paper, board or tissue web, as indicated between the two. Basically, you do not always have to roll both shown rollers towards each other. Both rolls 1 are parts of a paper, board or tissue machine, not shown.
  • the rollers 1 can also be used in various positions in a machine for producing or processing a fibrous web, such as a paper, board or tissue web, with which they come into direct or indirect contact. In the position of a central press roll in the press section of a paper machine technically highest demands are placed on the roll 1 and its coating. This is especially true of sheet dispensing properties, wear resistance at high line loads in press nips, and corrosion resistance in wet environments.
  • FIG. 2 shows, in a highly schematic view, the basic structure of a single layer, such as a functional layer of the coating 5 according to the invention, on a roll 1.
  • the roller 1 is rotatably mounted about its longitudinal axis and is suitably driven, so that it rotates away under a preferably parallel to the longitudinal axis along the roller 1 relative to this back and forth movable applicator 7.
  • the entire surface of the roller 1 can be coated successively, for example in a continuous spiral line.
  • the thermal coating device 6 for producing the roll according to the invention in the present case comprises a Applicator 7, an optional on and off material supply 8, an energy source 9, in which the usually powdery material is entered and a protective gas, not shown, for supplying inert gas to the roller.
  • the coating device 6 can be designed such that it can carry out both the thermal spraying and the laser dadding.
  • the application of inert gas is presently indicated by the cone, which adjoins the power source 9.
  • the protective gas can serve to entrain and / or accelerate the material, such as spray additive material, which is introduced into the beam path of the energy source 9 for melting.
  • spray additive material such as spray additive material
  • off, on or molten spray additive is thrown onto the roller to be coated 1, here, for example, the bare roll core. If the surface of the underlying substrate is also melted, as is the case with laser dandding, then the melted material supplied to the substrate also enters the substrate melt.
  • thermal coating device can be designed so that both thermal spraying with and without at least partial melting of the underlying substrate is possible. This can be achieved, for example, by means of which the thermal energy can be correspondingly adjusted.
  • FIGS. 3 to 5 each show, in a highly schematic sectional view, an embodiment of the present invention in a partial cross section perpendicular to the longitudinal axis through the roller 1.
  • the roll curvature has been disregarded.
  • the thickness seen in the radial direction of the individual layers of the roller 1 is not shown to scale. It is only the sequence of layers to be symbolized.
  • the roller 1 shown in each case usually has a radially inner roller core 2, which may be at least partially made of a metal such as steel or, more recently, of a plastic, in particular a fiber-reinforced plastic.
  • Adhesive layer 3 serves for bonding between the roller core 2 and the next outward radial direction. Since the adhesive layer 3 can be formed according to the prior art and thus known, a detailed description can be omitted.
  • a first functional layer 4 which is formed here from technical ceramics such as oxide ceramics, is applied.
  • the entire coating 5 produced in each case according to the illustrated embodiments can be produced by means of the thermal coating device of FIG. 2.
  • the functional layer 4 has been applied from a single single layer to the previously produced adhesive layer 3 by means of laser cladding.
  • the adhesive layer 3 was at least partially melted by the heat input of the laser into the adhesive layer 3.
  • Roll core 2 and adhesive layer 3 may form an alloy region (not shown) due to appropriate choice of their materials and their melting at the transition roller core adhesive layer.
  • the laser cladding results in a high-density functional layer 4, which has a low porosity, in particular over its entire thickness extent.
  • the adhesive layer 3 or functional layer 4 could be made up of a plurality of individual layers. Other, meaningful sequences of the adhesive and functional layer would be conceivable in principle.
  • the functional layer 4 produced by means of laser cladding has a low porosity in comparison to conventional coatings, for example produced by means of plasma spraying.
  • the embodiment of FIG. 4 shows a development of the object of FIG. 3.
  • the present radially outermost, produced by laser cladding functional layer 4 is not applied directly to the adhesive layer 3. Instead, this is applied to a thermally sprayed, functioning as an intermediate layer further functional layer 4.
  • the latter itself is directly on the adhesive layer 3 - but without substantially melting them - for example, conventionally produced by thermal spraying.
  • the functional layer 4 produced by means of thermal spraying has a higher porosity compared to the laser-injected functional layer 4.
  • the radially outermost functional layer 4 has a greater density than the functional layer 4 located directly underneath in the radial direction.
  • This additional radially inner functional layer 4 thermally sprayed onto the adhesion layer 3 by means of plasma serves as an intermediate layer to the radially outer layer produced by means of laser cladding (and here even radially outermost) functional layer 4. It is permeable to penetrating media such as fluids.
  • the less porous, radially outermost functional layer 4 serves as corrosion protection.
  • Figures 5a and 5b show another embodiment of the present invention.
  • the functional layer 4 is composed of a plurality of individual layers, which are not shown here in detail. Each single layer is formed, as shown in Fig. 2, by material, for example applied layer by layer on the roll core 2 by plasma spraying without substantially melting the underlying substrate. Such a functional layer composed of several individual layers is shown in FIG. 5a.
  • the finished functional layer 4 which, as shown in FIG. 5a, can be constructed from a plurality of functional individual layers, is subsequently remelted at least partially in the thickness direction (radial direction) by supplying thermal energy.
  • thermal energy can be effected by means of the thermal coating device 6 shown in FIG. 2, for example by the action of laser radiation.
  • it is dispensed with the addition of a spray additive material by the material supply of the coating device 6 is turned off. Melting and re-cooling removes most of the pores achieved by plasma spraying.
  • the radially outermost surface of the roller 1 or of the coating 5, that is to say the radially outermost functional layer 4 is thermally closed against the entry or passage of media.
  • the radially outermost functional layer 4 or the individual layer forming it has a higher density than the underlying, thermally sprayed functional layer 4 or the corresponding individual layer.
  • Such sealing can take place close to the surface, so that the sealed layer thickness in the radial direction makes up a fraction of the total layer thickness of the coating 5 or of the entire functional layer 4.
  • at least one functional layer may also be provided between the roller core 2 and the radially outermost functional layer 4, which has a greater density than a single functional layer 4 located radially below be made of several individual layers and by means of thermal spraying or laser cladding.
  • the Single layers of functional layer and / or adhesive layer can consist of different chemical compositions.

Landscapes

  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un rouleau destiné à une machine de production et/ou de traitement ultérieur d'un bande de matière fibreuse, par exemple d'une bande de papier, de carton ou de tissu, comprenant un mandrin, au moins une couche adhésive appliquée sur le mandrin et composée d'un premier matériau, et au moins une couche fonctionnelle appliquée au moins sur la couche adhésive et composée d'un deuxième matériau ; i) le deuxième matériau de la ou des couches fonctionnelles a été appliqué par un procédé de pulvérisation thermique et la couche fonctionnelle ainsi produite a ensuite été au moins en partie thermiquement fondue ; ii) ou bien le deuxième matériau de la ou des couches fonctionnelles a été appliqué par placage au laser ou par un procédé équivalent.
PCT/EP2015/075505 2014-11-06 2015-11-03 Rouleau et procédé de fabrication dudit rouleau WO2016071299A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014222631.7 2014-11-06
DE102014222631 2014-11-06

Publications (1)

Publication Number Publication Date
WO2016071299A1 true WO2016071299A1 (fr) 2016-05-12

Family

ID=54365266

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/075505 WO2016071299A1 (fr) 2014-11-06 2015-11-03 Rouleau et procédé de fabrication dudit rouleau

Country Status (1)

Country Link
WO (1) WO2016071299A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016114014A1 (de) * 2016-07-29 2018-02-01 Voith Patent Gmbh Verfahren zur Beschichtung eines Trockenzylinders
CN117758545A (zh) * 2023-12-30 2024-03-26 常州裕东制辊有限公司 一种用于纸质包装的高耐磨陶瓷涂胶辊

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870868A2 (fr) * 1997-04-11 1998-10-14 Valmet Corporation Rouleau de pressage à revêtement en céramique adapté à des conditions de corrosion difficiles, méthode pour la fabrication d'un tel rouleau et composition du revêtement
DE10130313A1 (de) 2000-06-21 2002-01-24 Ford Global Tech Dearborn Kraftfahrzeug mit Schiebetür
DE10130323A1 (de) * 2001-06-22 2003-01-02 Voith Paper Patent Gmbh Verschleisskörper in Schichtverbundbauweise, insbesondere in einer Papier- oder Kartonmaschine, Verfahren zu seiner Herstellung und seine Verwendung
DE202012012592U1 (de) 2012-05-04 2013-07-19 Voith Patent Gmbh Walze
WO2014180588A1 (fr) * 2013-05-06 2014-11-13 Voith Patent Gmbh Cylindre

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870868A2 (fr) * 1997-04-11 1998-10-14 Valmet Corporation Rouleau de pressage à revêtement en céramique adapté à des conditions de corrosion difficiles, méthode pour la fabrication d'un tel rouleau et composition du revêtement
DE10130313A1 (de) 2000-06-21 2002-01-24 Ford Global Tech Dearborn Kraftfahrzeug mit Schiebetür
DE10130323A1 (de) * 2001-06-22 2003-01-02 Voith Paper Patent Gmbh Verschleisskörper in Schichtverbundbauweise, insbesondere in einer Papier- oder Kartonmaschine, Verfahren zu seiner Herstellung und seine Verwendung
DE202012012592U1 (de) 2012-05-04 2013-07-19 Voith Patent Gmbh Walze
WO2014180588A1 (fr) * 2013-05-06 2014-11-13 Voith Patent Gmbh Cylindre

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016114014A1 (de) * 2016-07-29 2018-02-01 Voith Patent Gmbh Verfahren zur Beschichtung eines Trockenzylinders
WO2018019814A1 (fr) * 2016-07-29 2018-02-01 Voith Patent Gmbh Procédé de revêtement d'un cylindre de séchage
DE102016114014B4 (de) 2016-07-29 2018-05-17 Voith Patent Gmbh Verfahren zur Beschichtung eines Trockenzylinders
CN109477303A (zh) * 2016-07-29 2019-03-15 福伊特专利有限公司 涂覆烘缸的方法
CN117758545A (zh) * 2023-12-30 2024-03-26 常州裕东制辊有限公司 一种用于纸质包装的高耐磨陶瓷涂胶辊
CN117758545B (zh) * 2023-12-30 2024-07-26 常州裕东制辊有限公司 一种用于纸质包装的高耐磨陶瓷涂胶辊

Similar Documents

Publication Publication Date Title
EP4063532A1 (fr) Gros moteur doté d'une pièce de machine appartenant à un accouplement coulissant, ainsi que pièce de machine et son procédé de fabrication
EP2021526B1 (fr) Dispositif de protection d'usure et procede permettant de le produire
EP2994572B1 (fr) Cylindre
WO2019219402A1 (fr) Corps de freinage et procédé de fabrication d'un corps de freinage
DE102009011913A1 (de) Wärmedämmschichtsystem
WO2019219551A1 (fr) Corps de freinage et procédé de fabrication associé
WO2016071299A1 (fr) Rouleau et procédé de fabrication dudit rouleau
DE102006023567A1 (de) Wälzlagerbauteil und Verfahren zur Herstellung eines solchen
WO2006128424A1 (fr) Procede de production de couches etanches au gaz et de systeme de couches par pulverisation thermique
EP3112531B1 (fr) Composant pour une machine destinee a fabriquer et/ou a traiter une bande de matiere fibreuse et utilisation d'une poudre à pulvériser pour produire une couche fonctionelle pour un composant pour une machine destinee a fabriquer et/ou a traiter une bande de matiere fibreuse
DE202012012592U1 (de) Walze
EP2145974A1 (fr) Procédé destiné à l'injection de flammes à vitesse élevée
DE102016114014B4 (de) Verfahren zur Beschichtung eines Trockenzylinders
EP2573260B1 (fr) Rouleau et procédé de revêtement de rouleau
DE102016108278A1 (de) Mehrschichtiger bandförmiger Verbundwerkstoff und Verfahren zu dessen Herstellung
DE3877399T2 (de) Verbundwerkstoff und verfahren zu seiner hertellung.
DE202009012345U1 (de) Walze für eine Faserbahnmaschine
AT501676A1 (de) Verfahren zum herstellen eines schichtverbundwerkstoffes
DD299524A5 (de) Verfahren und vorrichtung zur herstellung eines verbundwerkstoffes
WO2013127566A1 (fr) Procédé de fabrication d'un élément structurale de palier
DE102015212400A1 (de) Bauteil für eine Maschine zur Herstellung und/oder Behandlung einer Faserstoffbahn
DE202017105119U1 (de) Abstreifer für flexible Materialbahnen von einer Walze
DE102007029470A1 (de) Verfahren zur Herstellung von Gleitlagern sowie mit diesem Verfahren herstellbare Gleitlager
EP3904593A1 (fr) Racleur à découpe pour feuilles de matières flexibles à partir d'un rouleau
DE102015205609A1 (de) Pulverbettbasiertes additives Herstellungsverfahren und Anlage zur Durchführung dieses Verfahrens

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15788058

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 15788058

Country of ref document: EP

Kind code of ref document: A1