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 PDFInfo
- 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
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)
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)
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)
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 |
-
1995
- 1995-02-09 FI FI950559A patent/FI96437C/fi not_active IP Right Cessation
-
1996
- 1996-02-08 EP EP96901815A patent/EP0817885B1/de not_active Expired - Lifetime
- 1996-02-08 JP JP8524022A patent/JPH10513507A/ja active Pending
- 1996-02-08 WO PCT/FI1996/000072 patent/WO1996024717A1/en active IP Right Grant
- 1996-02-08 DE DE69615351T patent/DE69615351T2/de not_active Expired - Fee Related
- 1996-02-08 AT AT96901815T patent/ATE205901T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
SVENSK PAPPERSTIDNING, Vol. 70, No. 7, 1967, THUNE, "Leverantor av Saval Kompletta Maskiner Som Enstaka Detaljer", page XXVIII. * |
Cited By (6)
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 |