EP1647629A1 - Rouleau pour la fabrication et/ou le traitement d'une bande fibreuse, procédé de fabrication du rouleau et utilisation du rouleau - Google Patents

Rouleau pour la fabrication et/ou le traitement d'une bande fibreuse, procédé de fabrication du rouleau et utilisation du rouleau Download PDF

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Publication number
EP1647629A1
EP1647629A1 EP05109357A EP05109357A EP1647629A1 EP 1647629 A1 EP1647629 A1 EP 1647629A1 EP 05109357 A EP05109357 A EP 05109357A EP 05109357 A EP05109357 A EP 05109357A EP 1647629 A1 EP1647629 A1 EP 1647629A1
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EP
European Patent Office
Prior art keywords
roll
roller
support
coating
radius
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Withdrawn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
EP05109357A
Other languages
German (de)
English (en)
Inventor
Thomas Jaschinski
Volker Schmidt-Rohr
Thomas RÜHL
Frank Schmidt
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
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 Patent GmbH, Voith Paper Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1647629A1 publication Critical patent/EP1647629A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D21F3/105—Covers thereof

Definitions

  • the invention relates to a roller, in particular forming roller or Siebsaugwalze, for the production and / or treatment of a fibrous web, in particular paper or board web whose roll shell is provided with a plurality of drainage openings, wherein the drainage openings are associated with at least a first group or a second group and wherein between the drainage openings a plurality of a sieve at least temporarily carrying support bodies is formed, each having a sieve contacting the support surface and each one surrounding the support surface and executed to the roll axis support flank, wherein between the respective support surface and the associated support flank an edge is formed.
  • the invention relates both to a process for producing the roll according to the invention and to an application of the roll according to the invention.
  • a shrink-screen cover on the forming roller has hitherto been necessary to avoid hole shadow markings in the fibrous web.
  • disadvantages include, for example, the frequent roll changes required as a result of shrink screen wear (typically every three at nine months), unplanned shutdowns Shrinkage screen damage and restrictions on the use of certain cleaning agents. For example, alkalis damage the polyester material of the shrink-wrap cover. Moreover, in most cases a high pressure spray tube is needed. Since the roller is provided with a stocking, the use of a scraper is not possible.
  • a forming roller without Schrumpfsiebbezug would thus mean a higher runnability of the machine for the production and / or treatment of a fibrous web.
  • This second surface pattern also referred to as second group or secondary pattern, is described, for example, in German Offenlegungsschriften DE 102 27 842 A1, DE 102 27 846 A1, DE 102 27 825 A1, DE 102 27 847 A1, DE 102 27 848 A1, DE 102 27 843 A1 and in the unpublished German patent applications DE 103 27 244.5 and DE 103 27 246.1 of the applicant.
  • roller with a primary and secondary pattern has a very positive effect on the uniformity of the dewatering of the fibrous web as well as the avoidance of hole shadow marks.
  • the serious disadvantage of using such a roller is that increased wear on both the roller and the screen due A reduction of the wings appears in appearance. This wear is reinforced in particular by sharp edges on the circumference of the wings or by raised nubs in the wings. Although attempts have been made to eliminate existing burrs and the like by conventional brushing, the problem of increased screen wear could not be satisfactorily resolved.
  • the invention has for its object to provide an improved roller of the type mentioned above, which provides a significant reduction in self-wear and the wear of at least temporarily guided over their contact surfaces sieve. Furthermore, a method for producing such a roller should be specified.
  • At least the wings are coated with at least one higher wear resistance than the material of the roll shell material having such that the individual support body has a respective touching the screen touching surface.
  • a contact surface which at least temporarily contacts the wire is created, which has a high wear resistance and thus a long service life while avoiding any self-wear on the roller, and, on the other hand, possibly existing sharp edges on the circumference of the support surfaces and / or raised nubs in the area of the wings covered, leveled and thus rendered harmless.
  • the respective contact surface is smaller, equal to or larger than the associated wing.
  • a plurality of, preferably all supporting flanks are coated at least in the entire area with at least one material having a higher wear resistance than the material of the roll mantle, at least in such a way that the individual supporting body has a hood-like coating.
  • the supporting body thus receives on the predominant part of its outer surface a low-wear coating, which increases the overall lifetime or life of the support body and thus the roller noticeably.
  • the coating of the wings preferably has a coating height which is chosen such that the radius-shaped contour of the transitional surface has a radius ⁇ 0.1 mm, preferably ⁇ 0.2 mm, in particular ⁇ 0.3 mm. This ensures that, depending on the coating process and material, the required radii result.
  • the coating material of the support body comprises at least one ceramic material, a hard metal or a Harkmetallleg réelle.
  • this material specification has only exemplary character. Of course, other materials that meet the requirements imposed on the roller at least find their use.
  • the coating of the roller according to the invention is particularly advantageous if drainage openings are assigned to a first group and further drainage openings are assigned to a second group.
  • the drainage openings of the first group are each further surrounded by a circular groove of a third group, wherein the circular grooves of the third group are preferably arranged concentrically to the circular groove surrounded by the drainage opening of the first group, or if the drainage openings of the at least two groups, at least in their respective orientation relative to the roll radius, with regard to their relative arrangement on the roll shell and / or with regard to their respective configuration, in particular their cross-section or cross-sectional shape, in particular in the area of the roll shell over the roll shell, produce an irregular surface structure.
  • Experiments carried out have shown that such coated rolls provide a significant reduction of the respective self-wear as well as the respective wear of the at least temporarily guided over their contact surfaces sieves.
  • the process according to the invention for producing a roll, in particular a forming roll or a suction roll, for producing and / or treating a fibrous web, in particular a paper or board web provides that the support bodies and supporting surfaces in the roll shell by means of drilling, milling, planing, pushing, sinking, Laser cutting or the like processing methods are manufactured and that at least partially, preferably completely coated with at least one of the material having a higher wear resistance than the material of the roll shell material coated such that the individual support body has a respective contacting surface of the screen.
  • preferably several, preferably all support flanks are at least coated in the respective edge, preferably coated in the entire area with at least one higher wear resistance than the material of the roll shell material such that the individual support body has a hood-like coating.
  • the wings and / or the support flanks of the support body can be coated with the material, for example by means of a thermal flame spraying process.
  • a thermal flame spraying process can find their use, wherein the coating method used is largely determined by the coating material used.
  • An advantageous embodiment of the manufacturing process of the roller is when the roll shell after the production of the support body and the wings is aftertreated, in particular by breaking and / or deburring sharp edges and / or brushing and / or sandblast of the roll shell. As a result, an optimal preparation due to the removal of sharp edges, burrs and the like for the subsequent coating of the support body of the roller is created.
  • the roll shell is after-treated by brushing, in particular by brushing with nylon brushes containing abrasive, after the production of the support bodies and the wings, wherein in the region of the edge a radius ⁇ 0, 05 mm is produced.
  • the roll shell is after the coating of the support body by grinding, in particular by grinding with a loose tape, reworked. As a result, an optimum surface quality of the coated roller can be achieved.
  • the roll according to the invention is outstandingly suitable for use in a twin-wire former of a machine for producing and / or treating a fibrous web, in particular a paper or board web.
  • the roll according to the invention can be designed as a forming roll or wire suction roll.
  • the twin-wire former may, for example, have an at least one substantially vertical twin-wire section, in the starting region of which a roll according to the invention is arranged in the form of a forming roll and / or in the deflection region and / or end region of a roll according to the invention in the form of a wire suction roll.
  • the pattern M can be local, sectional, multi-sectional or holistic, regular and / or irregular.
  • FIG. 2 now shows a spatial representation of the surface structure S of the pattern M according to FIG. 1.
  • the supporting body 5 has a supporting surface 6 not touching the sieve, and a supporting flank 7 surrounding the supporting surface 6 and directed towards the roll axis, wherein a sharp-edged and circumferential edge K is formed between the respective supporting surface 6 and the associated supporting flank 7 (see FIG ).
  • This sharp edge 7 causes the already described increased wear on the screen, not shown.
  • FIG. 3a shows a sectional illustration of a supporting body 5 of a roller 1 according to the prior art, which is shown only in sections.
  • the complete illustrated support body 5 forms with further merely indicated support bodies 5 each a single support surface 6 for the sieve, not shown.
  • This sharp edge K causes the already described increased wear on the screen, not shown.
  • FIG. 3b now shows an enlarged sectional view of the support body 5 of FIG. 3a, which has a support surface 6 and a support flank 7 surrounding the support surface 6.
  • a sharp-edged and circumferential edge K is formed between the support surface 6 and the associated supporting flank 7.
  • FIGS. 4a to 4d now show several sectional views of a supporting body 5 of a roller 1 according to the invention.
  • At least the wings 6 are coated with at least one higher wear resistance than the material of the roll shell 2 having material such when generating a coating B with a respective coating surface 9 that the individual support body 5 a respective having not touching sieve touching surface 8.
  • the respective contact surface 8 may be smaller (FIG. 4a), equal (FIG. 4b) or larger (FIG. 4c) than the associated support surface 6.
  • the respective contact surface 8 is larger than the associated support surface 6.
  • a protrusion Ü of the contact surface 8 of the coating B with respect to the support surface 6 arises.
  • a transition surface 10 is provided in each case, which merges into the contact surface 8 by means of a radius-shaped contour T.
  • the transition between the two surfaces 8, 10 is preferably carried out continuously and steadily. If the surface of the supporting flank has a non-continuous course, that is to say cut edges, in particular a corner on the top or the same, the transition between the two surfaces 8, 10 preferably also takes place continuously and steadily in this area.
  • FIG. 4d shows an embodiment of a carrier body 5, whose carrying flanks 7 are coated at least in the entire region with at least one material having a higher wear resistance than the material of the roll mantle 2, such that the individual carrier body 5 is a hood-like material Coating B having a coating surface 9.
  • the support body 5 thus has a respective contact surface 8 contacting the screen, not shown.
  • approximately one third of the area of the supporting flank 7 is coated.
  • several, preferably all supporting body 5 may be coated in such a way.
  • the produced support body 5 has in its uncoated form a radius R * ⁇ 0.05 mm.
  • a transition surface 10 is provided, which merges into the contact surface 8 by means of a radius-shaped contour T.
  • All four embodiments of FIGS. 4a to 4d have in common that the coating B of the support surfaces 6 has a coating height H which is chosen such that the radius-shaped contour T of the transition surface 10 has a radius R ⁇ 0.1 mm, preferably ⁇ 0.2 mm, in particular ⁇ 0.3 mm.
  • the coating material of the support body 5 comprises at least one ceramic material, a hard metal or a hard metal alloy.
  • a plurality of, preferably all support flanks 7, at least in the edge K executed, preferably in the entire area with at least one higher wear resistance than the material of the roll shell 2 having material coated so that the individual support body 5 has a hood-like coating B.
  • the wings 6 and / or the support flanks 7 of the support body 5 are preferably coated by means of a thermal flame spraying process with the material.
  • the roll shell 2 can be post-treated after the production of the support body 5 and the wings 6, in particular by breaking and / or deburring sharp edges and / or brushing and / or sandblasting the roll shell.
  • the roll shell 2 after the coating of the support body 5 preferably by a grinding, in particular by grinding with a loose tape, reworked.
  • FIG. 5 shows an exemplary application of the roll 1 according to the invention in a twin-wire former 11 of a machine for producing a fibrous web.
  • Such a Doppeisiebformer 11 is known for example from German Patent Application DE 101 06 731 A1. It has at least one essentially vertical double-wire section D, in the initial region B A of which a forming roller 12 and / or in its deflection region B U and / or end region B E a suction sieve 13 is arranged. At least one of the two rollers 12, 13 is designed as a roller 1 according to the invention.
  • the twin-wire section D of the Doppeisiebformers 11 can of course also at an angle to the horizontal obliquely up or down or they can also extend horizontally or approximately horizontally.
  • FIG. 5 represents only an exemplary course of the twin-wire section D.
  • the invention provides an improved roller, in particular forming roller or Siebsaugwalze, of the type mentioned, which provides a significant reduction of self-wear and the wear of at least temporarily guided over their contact surfaces sieve.

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  • Paper (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP05109357A 2004-10-14 2005-10-07 Rouleau pour la fabrication et/ou le traitement d'une bande fibreuse, procédé de fabrication du rouleau et utilisation du rouleau Withdrawn EP1647629A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410050263 DE102004050263A1 (de) 2004-10-14 2004-10-14 Walze zur Herstellung und/oder Behandlung einer Faserstoffbahn, Verfahren zur Herstellung der Walze und Anwendung der Walze

Publications (1)

Publication Number Publication Date
EP1647629A1 true EP1647629A1 (fr) 2006-04-19

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EP05109357A Withdrawn EP1647629A1 (fr) 2004-10-14 2005-10-07 Rouleau pour la fabrication et/ou le traitement d'une bande fibreuse, procédé de fabrication du rouleau et utilisation du rouleau

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EP (1) EP1647629A1 (fr)
DE (1) DE102004050263A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1860233A1 (fr) 2006-05-24 2007-11-28 Voith Patent GmbH Partie tamis d'une machine de fabrication et/ou de traitement d'une bande fibreuse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011077638A1 (de) * 2011-06-16 2012-12-20 Mwn In Niefern Maschinenfabrik Gmbh Walze und Herstellungsverfahren für eine Walze
DE102015104412A1 (de) 2015-03-24 2016-09-29 Schott Ag Verfahren zur Geometrieänderung von Glaskeramiken und verfahrensgemäß hergestellter beschichteter Glaskeramikartikel

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB982971A (en) * 1962-05-22 1965-02-10 Metallurg Ges Fuer Metallurg P Perforated roller, particularly for paper machines
US5023985A (en) * 1989-02-28 1991-06-18 Valmet Paper Machinery Inc. Coated roll for a paper making machine
WO1999032713A1 (fr) 1997-12-10 1999-07-01 Valmet Corporation Rouleau pour machine a papier ou a carton
DE10026542A1 (de) 1999-06-02 2000-12-14 Valmet Corp Walzenmantel für eine Papiermaschinen- oder Kartonmaschinen-Saugwalze
DE10106731A1 (de) 2001-02-14 2002-08-22 Voith Paper Patent Gmbh Doppelsiebformer zur Herstellung einer Faserstoffbahn aus einer Faserstoffsuspension
EP1375743A1 (fr) 2002-06-21 2004-01-02 Voith Paper Patent GmbH Rouleau pour machine à papier et procédé pour la fabrication d'un tel rouleau
DE10227825A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze zur Entwässerung einer Faserstoffbahn und Verfahren zu ihrer Herstellung sowie Verwendung der Walze
DE10227848A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze einer Papiermaschine und Verfahren zu ihrer Herstellung
DE10227843A1 (de) 2002-06-21 2004-01-08 Voith Paper Gmbh & Co. Kg Walze zur Entwässerung einer Faserstoffbahn, Verfahren zu ihrer Herstellung und Verwendung einer solchen Walze
DE10227847A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze einer Papiermaschine und Verfahren zu ihrer Herstellung
DE10227842A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze zur Entwässerung einer Faserstoffbahn, Verfahren zur Herstellung einer solchen Walze und deren Verwendung
DE10227846A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze einer Papiermaschine und Verfahren zu ihrer Herstellung
DE10327246A1 (de) 2003-06-17 2005-01-05 Voith Paper Patent Gmbh Walze, insbesondere Formierwalze
DE10327244A1 (de) 2003-06-17 2005-01-05 Voith Paper Patent Gmbh Walze, insbesondere Formierwalze

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB982971A (en) * 1962-05-22 1965-02-10 Metallurg Ges Fuer Metallurg P Perforated roller, particularly for paper machines
US5023985A (en) * 1989-02-28 1991-06-18 Valmet Paper Machinery Inc. Coated roll for a paper making machine
WO1999032713A1 (fr) 1997-12-10 1999-07-01 Valmet Corporation Rouleau pour machine a papier ou a carton
DE10026542A1 (de) 1999-06-02 2000-12-14 Valmet Corp Walzenmantel für eine Papiermaschinen- oder Kartonmaschinen-Saugwalze
DE10106731A1 (de) 2001-02-14 2002-08-22 Voith Paper Patent Gmbh Doppelsiebformer zur Herstellung einer Faserstoffbahn aus einer Faserstoffsuspension
EP1375743A1 (fr) 2002-06-21 2004-01-02 Voith Paper Patent GmbH Rouleau pour machine à papier et procédé pour la fabrication d'un tel rouleau
DE10227825A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze zur Entwässerung einer Faserstoffbahn und Verfahren zu ihrer Herstellung sowie Verwendung der Walze
DE10227848A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze einer Papiermaschine und Verfahren zu ihrer Herstellung
DE10227843A1 (de) 2002-06-21 2004-01-08 Voith Paper Gmbh & Co. Kg Walze zur Entwässerung einer Faserstoffbahn, Verfahren zu ihrer Herstellung und Verwendung einer solchen Walze
DE10227847A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze einer Papiermaschine und Verfahren zu ihrer Herstellung
DE10227842A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze zur Entwässerung einer Faserstoffbahn, Verfahren zur Herstellung einer solchen Walze und deren Verwendung
DE10227846A1 (de) 2002-06-21 2004-01-08 Voith Paper Patent Gmbh Walze einer Papiermaschine und Verfahren zu ihrer Herstellung
DE10327246A1 (de) 2003-06-17 2005-01-05 Voith Paper Patent Gmbh Walze, insbesondere Formierwalze
DE10327244A1 (de) 2003-06-17 2005-01-05 Voith Paper Patent Gmbh Walze, insbesondere Formierwalze

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1860233A1 (fr) 2006-05-24 2007-11-28 Voith Patent GmbH Partie tamis d'une machine de fabrication et/ou de traitement d'une bande fibreuse

Also Published As

Publication number Publication date
DE102004050263A1 (de) 2006-04-27

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