EP1421237A1 - Corps de frottement a structure stratifiee, concu en particulier pour une machine a papier ou a carton, son procede de production et son utilisation - Google Patents

Corps de frottement a structure stratifiee, concu en particulier pour une machine a papier ou a carton, son procede de production et son utilisation

Info

Publication number
EP1421237A1
EP1421237A1 EP02764590A EP02764590A EP1421237A1 EP 1421237 A1 EP1421237 A1 EP 1421237A1 EP 02764590 A EP02764590 A EP 02764590A EP 02764590 A EP02764590 A EP 02764590A EP 1421237 A1 EP1421237 A1 EP 1421237A1
Authority
EP
European Patent Office
Prior art keywords
wear
low
layer
construction according
wear 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.)
Withdrawn
Application number
EP02764590A
Other languages
German (de)
English (en)
Inventor
Bernd Bidlingmaier
Rainer Gadow
Andreas Killinger
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 Paper 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1421237A1 publication Critical patent/EP1421237A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D21F1/48—Suction apparatus
    • D21F1/483—Drainage foils and bars

Definitions

  • the invention relates to a wear body in laminated construction, in particular a drainage bar, a deflector, a foil or a squeegee in a paper or board machine, over the at least one partial surface of which a wear-causing medium, in particular a fluid or a material web, in particular a clothing in the form a sieve or a felt in a paper or board machine.
  • Such composite-layer wear bodies are used in almost all areas of technology, for example as high-pressure pistons in fluid pumps with the fluid liquid, in high-vacuum pumps with the fluid gas or gas mixture, as precision guides in machine tools and production facilities or, as already mentioned, as drainage strips in paper or board machines with the medium material web in the form of a covering.
  • the composite systems are generally made of one another and with at least one
  • the ceramic materials used usually consist of oxides, carbides or nitrides. Of these groups of substances mentioned, SiC, S ⁇ 3 N 4 , Al 2 O 3 , Zr0 2 with various stabilizers, MgO, Y 2 O 3 , rare earth oxides or multiphase mixed ceramics are used.
  • inlet areas with inlet angles of ⁇ 60 ° are not possible due to material-related conditions, such as brittleness of the ceramic materials, although an improved drainage performance can be expected in this angular area.
  • material-related conditions such as brittleness of the ceramic materials
  • Another disadvantage is the low mechanical strength, such as bending and notch impact stress, due to the brittleness of the ceramic materials, which ultimately increases Outbreaks and, as a result, increased clothing wear, even clothing destruction.
  • wear-reducing coatings are used on substrates which, due to their properties, do not indicate any signs of corrosion.
  • the wear-reducing coatings are often applied by thermal spraying processes, since this enables inexpensive production which is not divided into segments.
  • thermal spraying processes since this enables inexpensive production which is not divided into segments.
  • oxides for example Al 2 O 3 , Cr 2 0 3 , Zr0 2 , Si0 2 , or Ti0 2 , carbides, for example WC or TiC, Al and / or Zr silicates, borides, for example TiB 2 , T1 2 B, ZrB, ZrB 2 or ZrB-1 2 , as well as mixtures of the materials or material classes mentioned.
  • a well-known disadvantage of these components with applied wear protection layers is a limited layer thickness of at most 0.5 mm, since due to the high internal stresses within the layers, no good adhesion and no mechanical or thermophysical compatibility with the substrate is possible. This does not stop wear, it can only slow it down. For this reason, the wearing parts in paper or board machines are revised at regular intervals depending on the area of application.
  • Another problem that has not yet been solved satisfactorily is the porosity of thermally sprayed wear protection layers, which leads to a reduced service life and increased clothing wear in a paper or board machine.
  • the first object according to the invention is achieved in a composite-type wear body of the type mentioned at the outset in that the wear-type composite body preferably consists of a support body made of stainless steel and / or copper and / or nickel and / or die-cast and / or aluminum and / or zinc and / or at least one of its alloys or from a plastic carrier with at least one inserted plate made of stainless steel and / or copper and / or nickel and / or die cast and / or aluminum and / or zinc and / or at least one of such alloys that the wear body is formed in Laminate construction has an inlet area with an inlet angle for the medium that is ⁇ 90 °, preferably ⁇ 45 °, that at least the partial surface of the wear body that is subject to wear in laminated construction has at least one low-wear layer consisting of at least the class of self-flowing alloys and that the low-wear layer is thermally remelted.
  • This wear body according to the invention in laminated construction no longer has any disadvantageous segment construction and due to the thermal remelting process there is a diffusion connection between the support body (base material) and the applied low-wear layer (wear wear protection layer) with improved adhesive bond compared to other known thermal spray layers.
  • the support body base material
  • the applied low-wear layer wear wear protection layer
  • it has greater mechanical resilience, allows easier handling and causes less wear on the medium, in particular a covering in the form of a screen or a felt in a paper or board machine.
  • the newly created geometric design freedom means that, for example, in the entry area of drainage elements in a paper or board machine, entry angles of ⁇ 60 ° can be achieved, which allow improved drainage performance.
  • At least one hard material is admixed with the self-flowing alloy to form the low-wear layer.
  • the low-wear layer advantageously consists of NiCrB, NiCrBSi, CoNiCrBSi or at least one other self-flowing alloy
  • the hard material advantageously consists of at least one oxide, in particular Al 2 0 3 , Cr 2 0 3 , Zr0 2 , Si0 2 , or Ti0 2 , and / or a carbide, in particular WC or TiC, and / or a boride, in particular TiB 2 , Ti 2 B, ZrB, ZrB 2 or ZrB ⁇ 2 , and / or a silicide and / or mixtures of the materials mentioned, respectively Class material.
  • the low-wear layer can of course be mixed with other elements such as Fe, C, Mo or the like.
  • the low-wear layer has a remelted layer thickness which is in the range from 0.5 mm to 2 mm, preferably from 0.75 mm to 1.5 mm.
  • This layer thickness range is cost-justifiable and process-reliable and completely meets the requirements in practice.
  • the low-wear layer has a porosity of 0% to 10%, preferably 0.3% to 5%.
  • the wear behavior on the wear body according to the invention in a layered composite construction itself is reduced or largely minimized if the low-wear layer has a surface roughness R a of 0.01 ⁇ m to 10 ⁇ m, preferably of 0.01 ⁇ m to 1 ⁇ m, a surface roughness R 2 of 0 , 1 ⁇ m to 10 ⁇ m, preferably from 0.5 ⁇ m to 1 ⁇ m, a layer hardness HU 1.0 of 3,000 N / mm 2 to 15,000 N / mm 2 , preferably from 5,000 N / mm 2 to 10,000 N / mm 2 , a layer hardness H plast from 5,000 N / mm 2 to 30,000 N / mm 2 , preferably from 5,500 N / mm 2 to 20,000 N / mm 2 , and / or a layer hardness HV 0.1 from 650 to 5,000, preferably from 700 to 2,500.
  • These parameters only represent a selection of wear-reducing or minimizing data and can be implemented as
  • the strength and wear properties of the wearing part according to the invention are further improved if, in a further embodiment of the invention, the low-wear layer is also applied to surface areas which adjoin the partial surface subject to wear, such as in particular in the inlet area.
  • the complete inlet area including the areas of the inlet angle of a drainage bar can be shown in a paper or board machine.
  • the second object of the invention is achieved in that the wear body in a layered composite construction preferably consists of a carrier body made of stainless steel and / or copper and / or nickel and / or die cast and / or aluminum and / or zinc and / or at least one of these alloys or one Plastic carrier with at least one inserted plate made of stainless steel and / or copper and / or nickel and / or die casting and / or aluminum and / or zinc and / or at least one of those alloys is formed that at least on the sub-surface of the wear body that is subject to wear in a layered composite construction, at least one low-wear layer consisting of at least the class of self-flowing alloys is applied by a thermal spray technique and that the low-wear layer is thermally remelted.
  • At least one hard material can be admixed to the self-flowing alloy to form the low-wear layer during thermal spraying.
  • the self-flowing alloy to form the low-wear layer is applied to the wear body in a layered composite construction by means of high-speed flame spraying (HVOF) or flame spraying or a plasma process or an oxy-fuel process.
  • HVOF high-speed flame spraying
  • the methods mentioned are also characterized by high qualitative properties of the low-wear layer produced.
  • the thermal remelting is preferably carried out with at least one burner and / or with at least one laser radiation and / or with at least one
  • the strength and wear properties of the wearing part according to the invention are further improved if, in a further embodiment of the invention, the low-wear layer is also applied to surface areas which adjoin the partial surface subject to wear, such as in particular in the inlet area.
  • the complete inlet area including the areas of the inlet angle of a drainage bar can be shown in a paper or board machine.
  • the low-wear layer is applied with a remelted layer thickness which is in the range from 0.5 mm to 2 mm, preferably from 0.75 mm to 1.5 mm.
  • This layer thickness range is cost-justifiable and process-reliable and completely meets the requirements in practice.
  • a method for dewatering and / or forming a fiber suspension is also proposed, in which a covering, in particular a sieve or a felt, of a paper or cardboard machine is guided over a wear body according to the invention in a laminated construction.
  • FIG. 1 a sectional side view of a first wear body according to the invention in composite construction
  • FIG. 2 a sectional side view of a second wear body according to the invention in a layered composite construction
  • FIGS. 3 and 4 two micrographs of the wear body according to the invention in a layered composite construction.
  • FIG. 1 shows a sectional side view of a first wear body 1 according to the invention in a layered composite construction.
  • the wear body 1 in laminated construction is designed as a drainage strip 2 in a paper or cardboard machine, not shown, over the at least one partial surface 3 of which a wear-causing covering 4 (medium 4.1) is guided in the form of a sieve 5.
  • a wear-causing covering 4 medium 4.1
  • the wear body 1 is formed in a layered composite construction, preferably from a carrier body 6 made of stainless steel 6.1 and / or copper and / or nickel and / or die cast and / or aluminum and / or zinc and / or at least one of such alloys, that the wear body 1 in composite construction has an inlet area 7 with an intake angle ⁇ for the covering 4 (medium 4.1) that is ⁇ 90 °, preferably ⁇ 45 °, that at least the sub-surface 3 of the wear body 1 which is subject to wear is at least one at least one in composite construction has low-wear layer 9 consisting of the class of self-flowing alloys 8 and that low-wear layer 9 is thermally remelted.
  • a carrier body 6 made of stainless steel 6.1 and / or copper and / or nickel and / or die cast and / or aluminum and / or zinc and / or at least one of such alloys
  • the wear body 1 in composite construction has an inlet area 7 with an intake angle ⁇ for the covering 4 (medium 4.1)
  • the low-wear layer 9 advantageously consists of NiCrB, NiCrBSi, Co-NiCrBSi or at least one further self-flowing alloy 8, has a remelted layer thickness D that is in the range from 0.5 mm to 2 mm, preferably from 0.75 mm to 1.5 mm, and a porosity P of 0% to 10%, preferably 0.3% to 5%.
  • the low-wear layer 9 can of course also have other elements, such as Fe, C, Mo or the like. Furthermore, according to the invention, the low-wear layer 9 has a surface roughness R a of 0.01 ⁇ m to 10 ⁇ m, preferably of 0.01 ⁇ m to 1 ⁇ m, a surface roughness R z of 0.1 ⁇ m to 10 ⁇ m, preferably of 0.5 ⁇ m to 10 ⁇ m, a layer hardness HU 1.0 of 3,000 N / mm 2 to 15,000 N / mm 2 , preferably from 5,000 N / mm 2 to 10,000 N / mm 2 , a layer hardness H plast of 5,000 N / mm 2 to 30,000 N / mm 2 , preferably from 5,500 N / mm 2 to 20,000 N / mm 2 , and / or a layer hardness HV 0.1 from 650 to 5,000, preferably from 700 to 2,500, and / or a linear expansion coefficient ⁇ from 20 ° C to 250
  • the self-flowing alloy 8 can form at least one hard material 10 to form the low-wear layer 9, which consists of at least one oxide, in particular Al 2 0 3 , Cr 0 3 , Zr0 2 , Si0 2 , or OO2, and / or a carbide, in particular WC or TiC, and / or a boride, in particular TiB 2 , Ti 2 B, ZrB, ZrB 2 or ZrB 12 , and / or a silicide and / or mixtures of the materials or classes of materials mentioned.
  • the low-wear layer 9 which consists of at least one oxide, in particular Al 2 0 3 , Cr 0 3 , Zr0 2 , Si0 2 , or OO2, and / or a carbide, in particular WC or TiC, and / or a boride, in particular TiB 2 , Ti 2 B, ZrB, ZrB 2 or ZrB 12 , and / or a silicide and / or mixtures
  • FIG. 2 shows a sectional side view of a second wearing body 1 according to the invention in a layered composite construction, similar to that of FIG. 1.
  • the wearing body 1 in a layered composite construction preferably consists of a carrier body 6 made of a Plastic carrier 6.2 is formed with at least one plate 6.3 made of stainless steel 6.1 and / or copper and / or nickel and / or die-cast and / or aluminum and / or zinc and / or at least one of their alloys.
  • the low-wear layer 9 is also applied to surface areas 3.1, which adjoin the partial surface 3 which is subject to wear, such as in particular in the inlet area 7.
  • FIGS. 3 and 4 show two micrographs of the wear body 1 according to the invention in a layered composite construction in two different dimensions.
  • the low-wear layer 9 consists of NiCrBSi.
  • the method according to the invention is excellently suitable for producing the wear body according to the invention in a layered composite construction.
  • the invention creates a composite-type wear body of the type mentioned at the outset, which to a large extent no longer has the known disadvantages of the prior art, that is to say it allows greater mechanical strength and easier handling, no longer has a segmental design, one less wear on the wear part itself and on the medium, in particular on the covering in the form of a sieve or a felt in a paper or board machine, causes increased geometric design freedom and is less expensive in material costs.

Landscapes

  • Paper (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un corps de frottement (1) se présentant sous la forme d'une structure stratifiée conformément au préambule de la première revendication. La présente invention est caractérisée en ce que ce corps de frottement (1) comprend un corps de support (6) constitué d'acier inoxydable (6.1) et/ou de cuivre et/ou de nickel et/ou d'une coulée sous pression et/ou d'aluminium et/ou de zinc et/ou d'au moins un de leurs alliages, ou un support en plastique (6.2) comportant au moins une plaque intégrée (6.3) constituée d'acier inoxydable (6.1) et/ou de cuivre et/ou de nickel et/ou d'une coulée sous pression et/ou d'aluminium et/ou de zinc et/ou d'au moins un de leurs alliages. L'invention est également caractérisée en ce que le corps de frottement (1) comprend une zone d'admission (7) présentant un angle d'admission (ss) et conçue pour le milieu (4.1) dont la température est inférieure à 90 DEG , et de préférence, inférieure à 45 DEG , en ce qu'au moins une surface partielle (3) du corps de frottement (1) subissant une usure comporte au moins une couche à faible usure (9), constituée d'au moins un alliage faisant partie de la classe des alliages à auto-écoulement (8), et en ce que la couche à faible usure (9) est refondue thermiquement. L'invention se rapporte en outre à un procédé de production du corps de frottement, ainsi qu'à son utilisation.
EP02764590A 2001-06-22 2002-06-18 Corps de frottement a structure stratifiee, concu en particulier pour une machine a papier ou a carton, son procede de production et son utilisation Withdrawn EP1421237A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10130323A DE10130323A1 (de) 2001-06-22 2001-06-22 Verschleisskörper in Schichtverbundbauweise, insbesondere in einer Papier- oder Kartonmaschine, Verfahren zu seiner Herstellung und seine Verwendung
DE10130323 2001-06-22
PCT/EP2002/006684 WO2003000986A1 (fr) 2001-06-22 2002-06-18 Corps de frottement a structure stratifiee, conçu en particulier pour une machine a papier ou a carton, son procede de production et son utilisation

Publications (1)

Publication Number Publication Date
EP1421237A1 true EP1421237A1 (fr) 2004-05-26

Family

ID=7689189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02764590A Withdrawn EP1421237A1 (fr) 2001-06-22 2002-06-18 Corps de frottement a structure stratifiee, concu en particulier pour une machine a papier ou a carton, son procede de production et son utilisation

Country Status (6)

Country Link
US (1) US20040144514A1 (fr)
EP (1) EP1421237A1 (fr)
BR (1) BR0205611B1 (fr)
CA (1) CA2451500A1 (fr)
DE (1) DE10130323A1 (fr)
WO (1) WO2003000986A1 (fr)

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DE10316002B3 (de) * 2003-04-08 2004-10-28 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor
US20060121292A1 (en) * 2004-12-08 2006-06-08 Caterpillar Inc. Fusing of thermal-spray coatings
FI118211B (fi) * 2006-05-19 2007-08-31 Metso Paper Inc Staattinen vedenpoistoelin rainanmuodostuskonetta varten sekä menetelmä rainanmuodostuskonetta varten olevan staattisen vedenpoistoelimen pinnoittamiseksi
FI20075177L (fi) * 2007-03-14 2008-09-15 Metso Paper Inc Vedenpoistoelementti ja metallilistan käyttö vedenpoistoelementissä
EP2158988B1 (fr) * 2008-08-25 2015-11-18 Georg Fischer GmbH Procédé de fabrication de pièces de fonte dotées de composants intégrés
CN103209728B (zh) * 2010-09-24 2015-10-14 多诺万·B.·耶茨 紧凑、低流阻的气溶胶发生器及其操作方法
DE102012218961A1 (de) * 2012-10-17 2014-04-30 Sgl Carbon Se Stationäres Entwässerungselement für eine Maschine zur Herstellung einer Faserstoffbahn und dazugehöriges Verfahren
CN102990780B (zh) * 2012-12-20 2014-12-10 太仓市天合新材料科技有限公司 一种强制式混凝土搅拌机叶片
WO2016071299A1 (fr) * 2014-11-06 2016-05-12 Voith Patent Gmbh Rouleau et procédé de fabrication dudit rouleau

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Also Published As

Publication number Publication date
BR0205611A (pt) 2003-07-01
BR0205611B1 (pt) 2013-09-10
US20040144514A1 (en) 2004-07-29
WO2003000986A1 (fr) 2003-01-03
DE10130323A1 (de) 2003-01-02
CA2451500A1 (fr) 2003-01-03

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