WO1996024717A1 - A wearing element, such as a foil or a cover of a suctionbox in a paper machine wire section - Google Patents

A wearing element, such as a foil or a cover of a suctionbox in a paper machine wire section Download PDF

Info

Publication number
WO1996024717A1
WO1996024717A1 PCT/FI1996/000072 FI9600072W WO9624717A1 WO 1996024717 A1 WO1996024717 A1 WO 1996024717A1 FI 9600072 W FI9600072 W FI 9600072W WO 9624717 A1 WO9624717 A1 WO 9624717A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminium
oxide
foil
spray coating
profile
Prior art date
Application number
PCT/FI1996/000072
Other languages
English (en)
French (fr)
Inventor
Rolf Malmström
Original Assignee
Rm Metal Consulting Ky
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8542814&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1996024717(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rm Metal Consulting Ky filed Critical Rm Metal Consulting Ky
Priority to JP8524022A priority Critical patent/JPH10513507A/ja
Priority to DE69615351T priority patent/DE69615351T2/de
Priority to AT96901815T priority patent/ATE205901T1/de
Priority to EP96901815A priority patent/EP0817885B1/de
Publication of WO1996024717A1 publication Critical patent/WO1996024717A1/en

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

  • a wearing element such as a foil or a cover of a suctionbox in a paper machine wire section
  • the present invention relates to an element susceptible to wear, such as a foil or a vacuum box cover for a paper machine.
  • the drainage on the wire of a paper machine is brought about by hydrodynamic pressure which is accomplished by drainage elements disposed below the wire, such as foils or vacuum boxes.
  • foils made of metal has been improved by providing the upper surfaces of the foils with special ceramic inserts or upper parts, as shown for instance in Finnish Patent Application No. 935600.
  • Foils are also made of ceramic materials. These foil constructions are, however, very expensive.
  • foils, vacuum box covers and corresponding drainage elements in the wire section are made of pressed or extruded aluminium profiles. Aluminium can easily be extruded into a desired profile and in lengths corresponding to the width of the wire.
  • the aluminium profiles are surface treated by means of electrolytic plasma oxidation so that a layer of aluminium oxide, 50 - 400 ⁇ m thick, is deposited on the surface of the profile.
  • the aluminium surface is thus electrolytically coated with a relatively thick layer of aluminium oxide, A1 2 0 3 .
  • the oxide layer produced is hard, abrasion-resistant and forms protection against corrosion by passivating the surface of the profile.
  • Electrolytic plasma oxidation is an environment friendly and energy-saving process.
  • the aluminium profile which, if necessary, is pretreated, pickled and degreased, is immersed in a weak alkalic electrolytic solution, preferably of 0,001 - 0.05 %, and connected to the anode.
  • a voltage of 120 - 380 V is connected to the system.
  • the aluminium oxide surface which is produced tehereby has a low porosity, about 3 %.
  • the aluminium profile can be surface treated by means of thermic spray coating, such as plasma spray coating or detonation spray coating.
  • thermic spray coating powder of metal and/or non-metallic material is converted into molten or plastic condition and sprayed as molten particles onto the surface to be treated.
  • an aluminium profile can be coated with aluminium oxide, chromium oxide, zirconium oxide, aluminium silicate or carbides.
  • the plasma spray coating process utilizes electric energy, whereas the detonation coating process gets the energy needed through combustion.
  • the substrate is held at a low temperature, which in plasma spray coating usually is ⁇ 300°C and in detonation coating is between 50 to 100°C.
  • All substrates normally require some kind of pretreatment for good adherence of the coating.
  • a strong adherence between the substrate and a ceramic material is, however, achieved even without a binding intermediate layer.
  • the adherence corresponds to a value of 100 MPa at least.
  • the plasma spray coating produces a coating having a porosity of about 3 %, whereas the detonation spray coating produces a coating having a porosity of about 1 %.
  • the total cost of foils and vacuum box covers produced according to the invention of surface treated aluminium profiles is considerably lower than the total costs of corresponding foils or vacuum box covers made of steel, plastic and ceramic inserts, as shown for instance in the Finnish Patent Application No. 935600.
  • the aluminium profile is as such cheap and the surface treatment makes it durable.
  • the difference in cost is still greater, if a foil according to the invention is compared with a ceramic foil.
  • FIG. 1 is a schematic view of a foil box with three parallel foils disposed transverse to the direction of the wire, and
  • FIG. 2 is a schematic, vertical cross-sectional view of a foil taken in the direction of the wire.
  • FIG. 1 shows a foil box 10 with three foils 12, 14, and 16 made of extruded aluminium profiles.
  • the foils are disposed transverse to the direction of the wire and attached by means of dovetail profiles to supporting members 18, 20, 22 of steel.
  • FIG. 2 shows a vertical cross section of a foil 14 made of an extruded aluminium profile 24.
  • the lower portion of the profile is connected to the supporting member 20 by means of a dovetail joint.
  • the wire 26 bears against the upper surface 28 of the foil.
  • the upper surface of the foil has a 50 - 400 ⁇ m thick outer layer 30 of oxide, which makes the foil abrasion-resistant and hard.

Landscapes

  • Coating By Spraying Or Casting (AREA)
  • Paper (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
PCT/FI1996/000072 1995-02-09 1996-02-08 A wearing element, such as a foil or a cover of a suctionbox in a paper machine wire section WO1996024717A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8524022A JPH10513507A (ja) 1995-02-09 1996-02-08 ペーパーマシンのワイヤ部のフォイルあるいは吸引ボックスのカバーのような摩耗要素
DE69615351T DE69615351T2 (de) 1995-02-09 1996-02-08 Verschleissteil wie eine leiste oder eine abdeckplatte für saugkästen in der nasspartie einer papiermaschine
AT96901815T ATE205901T1 (de) 1995-02-09 1996-02-08 Verschleissteil wie eine leiste oder eine abdeckplatte für saugkästen in der nasspartie einer papiermaschine
EP96901815A EP0817885B1 (de) 1995-02-09 1996-02-08 Verschleissteil wie eine leiste oder eine abdeckplatte für saugkästen in der nasspartie einer papiermaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI950559 1995-02-09
FI950559A FI96437C (fi) 1995-02-09 1995-02-09 Kulutukselle altis kappale, kuten foili tai imulaatikon kansi, paperikoneen viiraosassa

Publications (1)

Publication Number Publication Date
WO1996024717A1 true WO1996024717A1 (en) 1996-08-15

Family

ID=8542814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1996/000072 WO1996024717A1 (en) 1995-02-09 1996-02-08 A wearing element, such as a foil or a cover of a suctionbox in a paper machine wire section

Country Status (6)

Country Link
EP (1) EP0817885B1 (de)
JP (1) JPH10513507A (de)
AT (1) ATE205901T1 (de)
DE (1) DE69615351T2 (de)
FI (1) FI96437C (de)
WO (1) WO1996024717A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2007135231A1 (en) 2006-05-19 2007-11-29 Metso Paper, Inc. A static dewatering element for a web forming machine and a method for covering a static dewatering element designed for a web forming machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020125250A1 (de) 2020-09-28 2021-09-09 Voith Patent Gmbh Foil, Saugkastendeckel oder entsprechendes Entwässerungselement mit keramischer Beschichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SVENSK PAPPERSTIDNING, Vol. 70, No. 7, 1967, THUNE, "Leverantor av Saval Kompletta Maskiner Som Enstaka Detaljer", page XXVIII. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2003000986A1 (de) * 2001-06-22 2003-01-03 Voith Paper Patent Gmbh Verschleisskörper in schichtverbundbauweise, insbesondere in einer papier- oder kartonmaschine, verfahren zu seiner herstellung und seine verwendung
WO2007135231A1 (en) 2006-05-19 2007-11-29 Metso Paper, Inc. A static dewatering element for a web forming machine and a method for covering a static dewatering element designed for a web forming machine
EP2024561A1 (de) * 2006-05-19 2009-02-18 Metso Paper, Inc. Statisches entwässerungsorgan für bahnformiermaschine und verfahren zum abdecken einer für eine bahnformiermaschine konstruiertes statisches entwässerungsorgan
EP2024561A4 (de) * 2006-05-19 2011-04-13 Metso Paper Inc Statisches entwässerungsorgan für bahnformiermaschine und verfahren zum abdecken einer für eine bahnformiermaschine konstruiertes statisches entwässerungsorgan
US8070915B2 (en) 2006-05-19 2011-12-06 Metso Paper, Inc. Static dewatering element for a web forming machine and a method for covering a static dewatering element designed for a web forming machine

Also Published As

Publication number Publication date
FI96437B (sv) 1996-03-15
EP0817885B1 (de) 2001-09-19
ATE205901T1 (de) 2001-10-15
FI950559A0 (fi) 1995-02-09
DE69615351T2 (de) 2002-07-04
JPH10513507A (ja) 1998-12-22
DE69615351D1 (de) 2001-10-25
FI96437C (fi) 1996-06-25
EP0817885A1 (de) 1998-01-14

Similar Documents

Publication Publication Date Title
CA2170926C (en) Hardfacing for progressing cavity pump rotors
CA2234888C (en) Press roll with ceramic coating, a method for manufacturing the same and coating composition
CN102149850A (zh) 卫浴用品
CN1651607B (zh) 制造耐腐蚀装饰涂层的方法和用于金属基底的涂层系统
EP1050603A4 (de) Oberflächenbehandeltes stahlblech mit hervorragendem korrosionwiderstand und verfahren zu dessen herstellung
DE69016161D1 (de) Walze für die Papiererzeugung und Verfahren zu deren Herstellung.
EP2024561B1 (de) Statisches entwässerungsorgan für bahnformiermaschine und verfahren zum abdecken einer für eine bahnformiermaschine konstruiertes statisches entwässerungsorgan
KR20110059710A (ko) 내마모 및 내부식성의 층상 복합체
CA2311494A1 (en) Modification of surfaces in order to increase surface tension
US6616584B2 (en) Elastomeric covered roller having a thermally sprayed bonding material
EP0817885B1 (de) Verschleissteil wie eine leiste oder eine abdeckplatte für saugkästen in der nasspartie einer papiermaschine
KR20060123304A (ko) 날이 제공된 공구 및 그 공구의 제조 방법
JP4567187B2 (ja) 耐食性被覆及び軽金属からなる支持体のための被覆系
AU5966386A (en) Wear resistant doctor blade
US5525203A (en) Process of manufacturing a sliding surface bearing
JP3347898B2 (ja) 耐摩耗性の被覆を備えた耐腐食性でない金属および金属合金からなる加工品および物品の製造方法
EP0520022A1 (de) Rasterwalze mit einer gemusterten schicht in einer galvanischen deckschicht und walzkörper für eine derartige walze.
AU749647B2 (en) Thermally injected anticorrosion layer for reinforced concrete and production method
JPH0413854A (ja) 耐摩耗・耐食性溶融亜鉛浴中ロール
JP3087011B2 (ja) 溶融金属めっき浴用シンクロール
WO2000006808A3 (en) Surface treatment of steel
US7291248B2 (en) Dewatering member with a composite body for a paper or board machine and method for manufacturing a dewatering member with a composite body for a paper or board machine
Suemitsu New coating line technologies
Lyashenko Restoration of the machine parts by differential coatings of discrete structure
JPH05339748A (ja) 複合皮膜の製造方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BR CA JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref country code: US

Ref document number: 1997 875856

Date of ref document: 19970807

Kind code of ref document: A

Format of ref document f/p: F

ENP Entry into the national phase

Ref country code: JP

Ref document number: 1996 524022

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 1996901815

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1996901815

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1996901815

Country of ref document: EP