EP3112531A1 - Composant pour une machine destinée a fabriquer et/ou a traiter une bande de matière fibreuse et poudre à pulvériser pour produire une couche fonctionnelle - Google Patents

Composant pour une machine destinée a fabriquer et/ou a traiter une bande de matière fibreuse et poudre à pulvériser pour produire une couche fonctionnelle Download PDF

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Publication number
EP3112531A1
EP3112531A1 EP16177481.5A EP16177481A EP3112531A1 EP 3112531 A1 EP3112531 A1 EP 3112531A1 EP 16177481 A EP16177481 A EP 16177481A EP 3112531 A1 EP3112531 A1 EP 3112531A1
Authority
EP
European Patent Office
Prior art keywords
phase particles
hard
hard phase
functional layer
grain size
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.)
Granted
Application number
EP16177481.5A
Other languages
German (de)
English (en)
Other versions
EP3112531B1 (fr
Inventor
Sebastian Sperling
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
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Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP3112531A1 publication Critical patent/EP3112531A1/fr
Application granted granted Critical
Publication of EP3112531B1 publication Critical patent/EP3112531B1/fr
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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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls

Definitions

  • doctor blades are applied to the roll surface, which remove the impurities from the roll surface.
  • Such doctor blades can, where they come into contact with the roller or its roller cover, also be equipped with corresponding functional layers.
  • the present invention relates to such coated rolls and doctor blades, but is not limited exclusively to these, but can also other comparable claimed components of a machine for manufacturing and / or Treatment of a fibrous web such as paper web are applied.
  • An example of rolls are central press rolls in the press section of a paper machine. But other industrial rollers come into consideration.
  • doctor blades it is possible to use knives or scrapers which come into contact, at least indirectly, in the machine with the roller, the fibrous web or a coating to be applied thereto. At least indirectly means here at least an indirect contact of the relevant parts or even a direct, so immediate contact is conceivable.
  • doctor blades may be doctor blades for applying a coating to the fibrous web, creping blades for creping a fibrous web from a roll, or cleaning scrapers for doctoring a roller to clean it.
  • the object of the present invention is therefore to provide a component of a machine for producing and / or treating a fibrous web, such as a calender roll or a doctor blade, by means of which the disadvantages due to washing out of the binder phase can be prevented. It is also the object of the invention to provide a corresponding spray powder for producing such a coating.
  • a component for a machine for producing and / or treating a fibrous web is understood, for example, to mean a roll or a doctor blade.
  • the component can be a basic body, in Trap of a roller, a preferably cylindrical roller core, in the case of a doctor blade, in particular a strip-shaped body having.
  • the roll may be a calender roll or a drying cylinder, such as Yankee cylinders. It can be designed heated or heated.
  • the term functional layer in the sense of the present invention is meant a layer which comes into direct or indirect contact with another part of the machine. This part can rest or move relative to the component having the functional layer.
  • direct or indirect it is meant that the functional layer is applied indirectly (indirectly to at least one intermediate layer arranged between main body and functional layer) or directly (directly, ie without an intermediate layer) to the main body.
  • the at least one intermediate layer may be an adhesive layer, which serves for the bonding between on the one hand the main body and the at least one functional layer.
  • functional layer means that radially outer or outermost layer which, for example, comes into contact with the paper web and / or a doctor blade during operation of the machine.
  • a roll cover or a doctor blade coating in the sense of the present invention therefore comprises at least one functional layer, but may also additionally have the at least one intermediate layer.
  • the functional and / or intermediate layer can / can be constructed from a plurality of individual layers.
  • binder phase is meant a toughening component such as a matrix or a binder.
  • hard phase is meant an enhancement of the binder phase in which the hard phase is embedded.
  • Hard phase and binder phase of the finished coating can together form a hard metal. They thus form a (exactly) two-phase material. Both phases are distributed homogeneously over the total thickness of the functional layer, ie mixed together.
  • finished coating means a ready-to-use coating as it can be used for the purpose mentioned, ie in particular a solidified at room temperature material compared to the starting material such as the mixture of the spray powder according to the invention over the unprocessed starting particles high hardness, wear resistance and especially the has high hot hardness.
  • the resulting frequency distribution in the form of a bar or line graph has exactly one maximum, e.g. in the form of a Gaussian bell, it is a monomodal particle size distribution. If, on the other hand, it has exactly two maxima, then it is a bimodal particle size distribution. Accordingly, therefore, the particle size distribution of the hard material particles or hard phase particles has a bimodal distribution, so that most of the first hard phase particles have such a grain size that they scatter around the first maximum, whereas the second hard phase particles have such a grain size that they scatter around the second maximum , In other words, the average grain sizes of the two hard phase particles (and thus the two modes) are different.
  • third hard-phase particles are also provided, so that a trimodal grain-size distribution of the hard-phase particles results analogously.
  • higher modes than three would be conceivable in principle, each mode would have corresponding hard phase particles having a corresponding average grain size.
  • the term "at least bimodal" means that a plurality of modes, ie a multimodal frequency distribution of the corresponding hard-phase particles is conceivable.
  • the average particle sizes of the hard-phase particles of the different modes can differ from one another here.
  • the mean, ie average distance between the hard material grains or hard phase particles in the binder phase is referred to as gap dimension in the sense of the invention.
  • thermal coating in the context of the present invention provides that for the production of the corresponding functional layer a material as spray additive, for example as powder, wire or otherwise suitable form by entry of thermal energy or completely melted and on the base body to be coated is accelerated kinetically.
  • the impinging material cools, solidifies and forms a mechanical, such as positive connection, with the body.
  • powder in particular in the form of thermal spraying, by powder is meant the spray additive material, ie that starting material, the inside or outside of a spray burner off, on or melted and accelerated, for example in a gas stream in the form of spray particles on to fling the surface of the underlying substrate (eg base or intermediate layer). Powder is therefore that starting material which is applied to the substrate to be coated for the purpose of producing the corresponding functional layer.
  • Edge 11 is followed on the one hand by the width edge 3 and, on the other hand, by a surface 12.
  • Edge 11 and surface 12 form the top of the doctor blade. This can form those, when used properly, the roller or the fibrous web side facing.
  • the surface 12 of the opposite surface of the base body 2 of the doctor blade is referred to as the back 13 (not shown).
  • Fig. 4 is in a highly schematic sectional view of a partial cross section perpendicular to the longitudinal axis through the finished coating 5 of the roller 1 from FIG. 3a or perpendicular to the longitudinal axis of in FIG. 3b shown scraper blade shown. To simplify the illustration, the roll curvature has been disregarded. It should also be noted that the thickness of the coating 5 or of the individual functional layer 4 and of the particles shown therein is not shown to scale.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
EP16177481.5A 2015-07-02 2016-07-01 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 Active EP3112531B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015212399.5A DE102015212399A1 (de) 2015-07-02 2015-07-02 Bauteil für eine Maschine zur Herstellung und/oder Behandlung einer Faserstoffbahn

Publications (2)

Publication Number Publication Date
EP3112531A1 true EP3112531A1 (fr) 2017-01-04
EP3112531B1 EP3112531B1 (fr) 2019-10-16

Family

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Application Number Title Priority Date Filing Date
EP16177481.5A Active EP3112531B1 (fr) 2015-07-02 2016-07-01 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

Country Status (2)

Country Link
EP (1) EP3112531B1 (fr)
DE (1) DE102015212399A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112593446A (zh) * 2020-11-25 2021-04-02 丁士美 一种可调节喷淋角度的造纸用喷淋机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022121998A1 (de) 2022-08-31 2024-02-29 Voith Patent Gmbh Walze und Pressvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0710741A2 (fr) * 1990-11-30 1996-05-08 S.D. Warren Company Procédé et appareil de calandrage pour papier
US20060213326A1 (en) * 2005-03-28 2006-09-28 Gollob David S Thermal spray feedstock composition
US20070202350A1 (en) * 2006-02-28 2007-08-30 Schlumberger Technology Corporation Reducing abrasive wear in wear resistant coatings
US20130251910A1 (en) 2006-12-15 2013-09-26 Tetyana P. Shmyreva Amorphous-nanocrystalline-microcrystalline coatings and methods of production thereof
DE102013201740A1 (de) * 2013-02-04 2014-04-10 Voith Patent Gmbh Schaberklinge

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035043A1 (fr) * 1980-02-28 1981-09-09 Scm Corporation Poudres d'alliage autofondantes pour la pulvérisation et la fusion, procédé pour préparer les poudres et objets revêtus avec ces poudres
US20150114720A1 (en) * 2013-10-24 2015-04-30 Smith International, Inc. Inhibition of Microfissure Formation in Wear Resistant Coatings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0710741A2 (fr) * 1990-11-30 1996-05-08 S.D. Warren Company Procédé et appareil de calandrage pour papier
US20060213326A1 (en) * 2005-03-28 2006-09-28 Gollob David S Thermal spray feedstock composition
US20070202350A1 (en) * 2006-02-28 2007-08-30 Schlumberger Technology Corporation Reducing abrasive wear in wear resistant coatings
US20130251910A1 (en) 2006-12-15 2013-09-26 Tetyana P. Shmyreva Amorphous-nanocrystalline-microcrystalline coatings and methods of production thereof
DE102013201740A1 (de) * 2013-02-04 2014-04-10 Voith Patent Gmbh Schaberklinge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112593446A (zh) * 2020-11-25 2021-04-02 丁士美 一种可调节喷淋角度的造纸用喷淋机构
CN112593446B (zh) * 2020-11-25 2023-11-10 四川成发造纸机械有限公司 一种可调节喷淋角度的造纸用喷淋机构

Also Published As

Publication number Publication date
EP3112531B1 (fr) 2019-10-16
DE102015212399A1 (de) 2017-01-05

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