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EP2994572B1 - Cylindre - Google Patents

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Publication number
EP2994572B1
EP2994572B1 EP14709275.3A EP14709275A EP2994572B1 EP 2994572 B1 EP2994572 B1 EP 2994572B1 EP 14709275 A EP14709275 A EP 14709275A EP 2994572 B1 EP2994572 B1 EP 2994572B1
Authority
EP
European Patent Office
Prior art keywords
coating
roll
produced
roller
layer
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP14709275.3A
Other languages
German (de)
English (en)
Other versions
EP2994572A1 (fr
Inventor
Alexander Etschmaier
Franz Grohmann
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.)
Voith Patent GmbH
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 EP2994572A1 publication Critical patent/EP2994572A1/fr
Application granted granted Critical
Publication of EP2994572B1 publication Critical patent/EP2994572B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 for use in a machine for producing and / or finishing a fibrous web such as a paper, board or tissue web according to the preamble of claim 1.
  • a roll is made for example DE 36 21 154 A1 known.
  • Such 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.
  • thermal coating provides that powder or wires are melted by the introduction of thermal energy and accelerated kinetically on the roll core to be coated.
  • the properties and possibilities of the injection processes are essentially given by the ratio of kinetic to thermal energy.
  • a roller with a coating of a metal oxide is for example from EP 0870867 B1 known.
  • the ceramic layer has 50 to 95% and preferably 55 to 80% of Cr 2 O 3 and 3 to 50% and preferably 20 to 45% of TiO 2 and possibly other metal oxides.
  • the sole input of energy into the material to be applied and a cooling rate of up to 10 6 K / s merely lead to a mechanical connection or clamping of the raw material to the roll core.
  • a careful preparatory surface treatment such as sandblasting and the like is needed, which is complicated and time-consuming.
  • the coating structure is closed in a porous state up to open porosity.
  • the porosity can lead to increased corrosion tendency and adhesion problems. Accordingly, the surface of the sprayed layer must be filled, for example by final sealing with a polymer.
  • thermal spraying is not an economical or ecological process because of the poor powder application efficiency in terms of ⁇ m per stroke and the percentage of powder remaining on the roll.
  • the alloy region has a thickness of 0.5 to 3%, preferably 1%, of the layer thickness of the coating.
  • the coating may preferably be made using an inductive device, a plasma gun or a laser.
  • the material may be in powder, rod or wire form.
  • the coating may comprise at least one layer produced by a single stroke, or preferably several layers generated by several strokes.
  • a thermal spray coating according to the prior art ( Fig. 1A ) a coating produced according to the invention by laser cladding ( Fig. 1B ).
  • roller coating can range from “only wear-resistant” to “only corrosion-resistant”. Common to all positions, however, is the requirement for good adhesion of the roll coating on the roll core.
  • the above-mentioned disadvantages can be alleviated by improved adhesion of the coating to the roll core to the effect that the connection of the coating material is not based on a purely mechanical clamping, but on a metallurgical bond.
  • the improved adhesion with a reduced porosity of the coating can also increase the corrosion resistance compared to a conventional thermal spray coating.
  • Fig. 1A a section of a roller 1 with a conventional thermal spray coating 2 strong shown schematized cut.
  • the spray layer 2 is applied to a roller body 3, which consists of metal, preferably of steel.
  • the sprayed layer 2 of metallic, ceramic or cermet materials may at least partially exist.
  • the connection of the materials to the roll shell 3 is effected only by a mechanical or positive clamping of the molten particles on the material of the correspondingly prepared roll shell 3.
  • the interface 4 thus formed has seen in the radial direction no significant expansion. The attachment is thus limited.
  • corrosion by infiltration of water and punctual mechanical overloads such as the passage of a foreign body through a nip between two rollers 1 is thus to be expected that the sprayed layer 2 partially dissolves the roll shell 3. This can lead to endangerment of the operating personnel and damage to subsequent machine parts.
  • Fig. 1B in the same view as Fig. 1A a cross section through a coating 5 produced according to the invention by means of laser cladding.
  • the connection of the materials which are built up to the coating 5, to the surface of the roll shell 3, is present here to an increased extent, since the energy input is higher overall and not only the materials melted, but also thermal energy in the surface of the roll shell 3 is entered.
  • Characterized the roll shell 3 is melted to a small extent, so that the material which is applied by a suitable applicator, can alloy into the material of the roll shell and thus enters into a metallurgical connection with the material of the roll shell 3.
  • the kinetic energy thus hardly contributes to the coating process, in contrast to thermal spraying.
  • an alloy region 6 constitutes 0.5 to 3%, preferably 1% of the layer thickness of the coating 5 to be built up.
  • the alloy region 6 is smaller, so that a finer processing of the materials is possible, which improves the surface quality of the coating 5 and reduces subsequent work steps.
  • the coating 5 produced by the laser cladding is usually produced in several strokes, wherein an alloy region also arises between the layers of the individual strokes, since each time the underlying region is remelted and alloyed with the further layer lying thereon. This in turn results in increased adhesion and corrosion resistance.
  • Fig. 2 is shown in a highly schematic view of the structure of a coating 5 on a roller 1.
  • the roller 1 is rotatably mounted and is suitably driven so that it rotates away under a preferably axially displaceable along the roller 1 application device 7. Thereby, the entire surface of the roll 1 can be coated in a continuous spiral line in at least one or more strokes. However, it is also possible to apply the coating 5 in a different manner, for. B. in radial rings or axial stripes.
  • the application device 7 essentially comprises a material supply 8 and an energy source 9, in which the usually powdery material is introduced.
  • energy source 9 inductive and plasma generating devices and lasers of various types such as CO 2 laser, HDPL (High Power Diode Laser) or DDL (Direct Diode Laser) are conceivable.
  • the construction of a coating 5 by means of laser cladding represents the most technologically feasible variant.
  • a major economic advantage of the process is the high separation efficiency compared to thermal coatings with increased layer thickness per stroke ( ⁇ m / pass).

Landscapes

  • Coating By Spraying Or Casting (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (4)

  1. Cylindre (1) destiné à une utilisation dans une machine pour la fabrication et/ou la transformation d'une bande de matière fibreuse telle qu'une bande de papier, de carton ou de tissu, comprenant une gaine de cylindre (3), qui est constituée au moins par endroits d'un matériau métallique, et un revêtement (5) formé sur celle-ci, le revêtement (5) comprenant au moins par endroits un matériau métallique et/ou céramique-métal, une zone d'alliage (6) étant formée entre la gaine de cylindre (3) et le revêtement (5), consistant en une liaison métallurgique entre le matériau métallique et/ou céramique-métal du revêtement (5) et le matériau de la gaine de cylindre (3), caractérisé en ce que la zone d'alliage (6) présente une épaisseur de 0,5 à 3 %, de préférence de 1 %, de l'épaisseur de couche du revêtement (5).
  2. Cylindre selon la revendication 1, caractérisé en ce que le revêtement (5) est fabriqué en utilisant un dispositif inductif, un canon à plasma ou un laser.
  3. Cylindre selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le matériau se présente sous la forme de poudre, sous la forme d'un fil ou sous la forme d'une tige.
  4. Cylindre selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le revêtement (5) comprend au moins une couche, qui est formée par une course unique, de préférence plusieurs couches, qui sont formées par plusieurs courses.
EP14709275.3A 2013-05-06 2014-03-11 Cylindre Active EP2994572B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013208254 2013-05-06
PCT/EP2014/054651 WO2014180588A1 (fr) 2013-05-06 2014-03-11 Cylindre

Publications (2)

Publication Number Publication Date
EP2994572A1 EP2994572A1 (fr) 2016-03-16
EP2994572B1 true EP2994572B1 (fr) 2017-10-18

Family

ID=50241422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14709275.3A Active EP2994572B1 (fr) 2013-05-06 2014-03-11 Cylindre

Country Status (4)

Country Link
US (1) US9863091B2 (fr)
EP (1) EP2994572B1 (fr)
CN (1) CN105189866B (fr)
WO (1) WO2014180588A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016071299A1 (fr) * 2014-11-06 2016-05-12 Voith Patent Gmbh Rouleau et procédé de fabrication dudit rouleau
EP3317456A1 (fr) * 2015-07-02 2018-05-09 Voith Patent GmbH Composant destiné à une machine de fabrication et/ou de traitement d'une bande de matière fibreuse et procédé de production d'un revêtement d'un composant
DE102015212397A1 (de) * 2015-07-02 2017-01-05 Voith Patent Gmbh Bauteil für eine Maschine zur Herstellung und/oder Behandlung einer Faserstoffbahn
DE102016114014B4 (de) * 2016-07-29 2018-05-17 Voith Patent Gmbh Verfahren zur Beschichtung eines Trockenzylinders
CN113680590B (zh) * 2021-08-12 2022-06-24 上海交通大学 一种燃料电池极板基材电辅助梯度涂层制备装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2744188A1 (de) * 1976-09-30 1978-04-06 Eutectic Corp Trockner-walze
DE3621154A1 (de) * 1985-09-16 1987-03-26 Valmet Oy Pressenwalze und ein verfahren zu deren herstellung
DE3725892A1 (de) * 1987-08-05 1989-02-16 Voith Gmbh J M Presswalze mit einem aufgewickelten belag, insbesondere entwaesserungswalze fuer papiermaschinen, sowie verfahren und vorrichtung zu ihrer herstellung
EP0278942B1 (fr) * 1987-01-30 1991-06-19 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé pour le traitement superficiel d'un cylindre de laminoir

Family Cites Families (21)

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US3526939A (en) * 1968-12-19 1970-09-08 Ahlstroem Oy Method for covering press rolls
US4015100A (en) * 1974-01-07 1977-03-29 Avco Everett Research Laboratory, Inc. Surface modification
US4323756A (en) * 1979-10-29 1982-04-06 United Technologies Corporation Method for fabricating articles by sequential layer deposition
FR2509640A1 (fr) * 1981-07-17 1983-01-21 Creusot Loire Procede de fabrication d'une piece metallique composite et produits obtenus
US4733446A (en) * 1982-06-24 1988-03-29 Kuroki Kogyosho Co., Ltd. Roll
JPS60238489A (ja) * 1984-05-12 1985-11-27 Daiki Gomme Kogyo Kk 表面被覆金属層の作製する方法
US4856161A (en) * 1985-01-09 1989-08-15 Valmet Oy Press roll
US4609577A (en) * 1985-01-10 1986-09-02 Armco Inc. Method of producing weld overlay of austenitic stainless steel
FI80097B (fi) 1988-04-28 1989-12-29 Valmet Paper Machinery Inc Vals i presspartiet av en pappersmaskin och foerfarande foer framstaellning av denna.
US4942059A (en) * 1988-09-29 1990-07-17 Westinghouse Electric Corp. Method for hardfacing metal articles
IT1238090B (it) * 1989-10-25 1993-07-07 Marelli Autronica Sistema per il controllo del riscaldamento dell'abitacolo di un autoveicolo
FI86566C (fi) 1989-10-27 1992-09-10 Valmet Paper Machinery Inc Vals foer anvaendning vid pappersframstaellning och foerfarande foer framstaellning av valsen.
US5235747A (en) * 1989-10-27 1993-08-17 Valmet Paper Machinery Inc. Method of manufacture of a roll for use in paper production
JP2890658B2 (ja) * 1990-04-23 1999-05-17 いすゞ自動車株式会社 アルミ鋳物部品の局部強化方法
US5766378A (en) * 1995-11-06 1998-06-16 Ag Industries, Inc. Stainless steel surface claddings of continuous caster rolls
EP0870867B1 (fr) 1997-04-11 2002-12-11 Metso Paper, Inc. Rouleau pour une machine à papier ou à carton et méthode pour la fabrication d'un tel rouleau
FI112266B (fi) 1997-04-11 2003-11-14 Metso Paper Inc Keraamipinnoitteinen puristintela vaikeisiin korroosio-olosuhteisiin, menetelmä telan valmistamiseksi ja pinnoitekoostumus
US6127644A (en) * 1999-04-27 2000-10-03 Stoody Company Electroslag surfacing using wire electrodes
DE10137776C1 (de) * 2001-08-02 2003-04-17 Fraunhofer Ges Forschung Verfahren zur Erzeugung von verschleissbeständigen Randschichten
CN1296558C (zh) * 2002-01-31 2007-01-24 王艳 造纸压光机用组合式压光辊
GB0420578D0 (en) * 2004-09-16 2004-10-20 Rolls Royce Plc Forming structures by laser deposition

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2744188A1 (de) * 1976-09-30 1978-04-06 Eutectic Corp Trockner-walze
DE3621154A1 (de) * 1985-09-16 1987-03-26 Valmet Oy Pressenwalze und ein verfahren zu deren herstellung
EP0278942B1 (fr) * 1987-01-30 1991-06-19 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé pour le traitement superficiel d'un cylindre de laminoir
DE3725892A1 (de) * 1987-08-05 1989-02-16 Voith Gmbh J M Presswalze mit einem aufgewickelten belag, insbesondere entwaesserungswalze fuer papiermaschinen, sowie verfahren und vorrichtung zu ihrer herstellung

Also Published As

Publication number Publication date
US20160130756A1 (en) 2016-05-12
WO2014180588A1 (fr) 2014-11-13
EP2994572A1 (fr) 2016-03-16
CN105189866B (zh) 2017-12-15
CN105189866A (zh) 2015-12-23
US9863091B2 (en) 2018-01-09

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