FI117676B - Method and Equipment for Making a Wear Resistant Coating on a Sheet for Treating a Paper Path and Treatment Sheet - Google Patents

Method and Equipment for Making a Wear Resistant Coating on a Sheet for Treating a Paper Path and Treatment Sheet Download PDF

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Publication number
FI117676B
FI117676B FI20050630A FI20050630A FI117676B FI 117676 B FI117676 B FI 117676B FI 20050630 A FI20050630 A FI 20050630A FI 20050630 A FI20050630 A FI 20050630A FI 117676 B FI117676 B FI 117676B
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Prior art keywords
coating
composition
sheet
blade
treatment
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FI20050630A
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Finnish (fi)
Swedish (sv)
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FI20050630A0 (en
Inventor
Ingmar Vesterlund
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Ingmar Westerlund Consulting O
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Application filed by Ingmar Westerlund Consulting O filed Critical Ingmar Westerlund Consulting O
Priority to FI20050630A priority Critical patent/FI117676B/en
Publication of FI20050630A0 publication Critical patent/FI20050630A0/en
Priority to PCT/FI2006/000197 priority patent/WO2006134209A1/en
Application granted granted Critical
Publication of FI117676B publication Critical patent/FI117676B/en

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Classifications

    • 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
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • B05D1/42—Distributing applied liquids or other fluent materials by members moving relatively to surface by non-rotary members
    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/34—Knife or blade type coaters

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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)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

117676 MENETELMÄ JA LAITTEISTO PAPERIRAINAN KÄSITTELYTERÄN KULUTUSTA KESTÄVÄN PINNOITTEEN VALMISTAMISEKSI JA KÄSITTELYTE-RÄ 5 Tämän keksinnön kohteena on menetelmä ja laitteisto paperirainan käsittelyyn tarkoitetun käsittelyterän, kuten päällystys-, kaavin- tai kreppausterän, kulutusta kestävän pinnoitteen valmistamiseksi. Keksintö koskee myös käsittelylaitteistoa, jossa on kulutusta kestävällä pinnoitteella varustettu terä, sekä käsittelyterää.The present invention relates to a method and apparatus for producing a blade for abrasion, abrading or abrasion of a blade for treating a paper web. The invention also relates to a treatment apparatus having a wear-resistant coating blade and a treatment blade.

10 Paperin päällystyksessä paperia pinnoitetaan yleensä jollakin pastamaisella lisäaineella, jossa on esimerkiksi pigmenttiä ja sideaineita, Päällystyksellä pyritään parantamaan paperin pinnan ominaisuuksia. Päällystys tapahtuu paperikoneen päällystysyksikössä, jossa pinnoitusaine levitetään pohjapaperin pintaan ja tasoitetaan. Päällystäminen voi tapahtua esimerkiksi teräpäällystimessä, 15 jossa pinnoitusaine levitetään paperin pintaan ja tasoitetaan päällystystelan sekä sen yhteyteen järjestettyjen päällystysterän avulla. Päällystysterän paperirai-naa kohti oleva reuna on viistetty. Päällystysterien kulumiskestävyyden lisäämiseksi päällystysterän paperirainan puoleinen reuna pinnoitetaan kulutusta kestävällä materiaalilla, kuten keraamisella aineella. Pinnoitetulla terällä saavute-20 taan pidempi kestoikä, vähemmän teränvaihtoja, vähemmän paperihylkyä, enemmän paperia samalla koneajalla ja parempi paperin laatu.In paper coating, paper is generally coated with a paste additive such as pigment and binders. The coating is intended to improve the surface properties of the paper. The coating takes place in a paper machine coating unit where the coating material is applied to the base paper surface and leveled. The coating may be carried out, for example, in a blade coater where the coating material is applied to the paper surface and leveled by a coating roll and a coating blade arranged in connection therewith. The edge of the coating blade towards the paper web is bevelled. To increase the wear resistance of the coating blades, the paper-side edge of the coating blade is coated with a wear-resistant material, such as a ceramic material. A coated blade achieves longer life, less blade changes, less paper waste, more paper at the same machine time, and better paper quality.

Päällystysterät voidaan pinnoittaa kulutusta kestävällä pinnoitteella esimerkiksi Fl-kuulutusjulkaisussa 71794 esitetyn mukaisesti. Fl-kuulutusjulkaisussa pin-25 noittamisessa käytetään keraamisia aineita, metallioksideja tai-karbideja.The coating blades may be coated with a wear-resistant coating, for example, as disclosed in F1 publication 71794. F1 announcement pin-25 uses ceramic materials, metal oxides or carbides.

Pinnoittaminen tapahtuu plasma-tai liekkiruistutuksella siten, että alusnauha ohjataan kulkemaan yhden tai useamman pinnoitusaseman kautta, joissa on yksi tai useampia nauhan suhteen aseteltavia metalliruiskuja säädettyinä annostelemaan ennalta määrätty määrä sulaa pinnoitusainetta. Kulumiskestävä 30 pinnoite aikaansaadaan asteittain tuomalla päällekkäin useita kerroksia, jolloin voidaan välttää erityisesti terän ominaisuuksien, kuten taipuisuuden, huonontuminen pinnoituksen yhteydessä. Ennen pinnoitusta alusnauhalle suoritetaan | esikäsittely esimerkiksi hiomalla tai harjaamalla alustanauhaa sen pituussuunnassa pyörivän hiontakiekon tai teräsharjan avulla. Nauhamateriaali voidaan ; 35 ohjata kulkemaan edestakaisin pinnoitusaseman kautta pinnoitteen asteittai- ‘ seksi kasvattamiseksi syöttämällä sitä pinnoitusaseman molemmilla puolilla olevilta keloilta.Coating is accomplished by plasma or flame spraying such that the substrate is guided through one or more coating stations having one or more metal-adjustable syringes adjusted to dispense a predetermined amount of molten coating agent. The wear-resistant coating 30 is achieved by gradually applying a plurality of layers on top of each other, thereby avoiding, in particular, deterioration of blade properties, such as flexibility, during coating. Before coating, the lining shall be subjected to: pre-treatment, for example, by grinding or brushing the substrate with a longitudinal rotating grinding wheel or a steel brush. The tape material can be; 35, to pass back and forth through the coating station to gradually increase the coating by feeding it from coils on both sides of the coating station.

i 2 1176762,117,676

Tunnetun tekniikan ongelmana on pinnoituksen pintaominaisuuksien ja pinnoituksen pysyvyyden optimoiminen siten, että pinnoitusaineen, joka koostuu usein 5 useammasta komponentista, ominaisuudet saadaan valittua siten, että saavutetaan riittävän kulutuskestävä pinta ja kuitenkin hyvä pinnoituksen pysyvyys.The problem with the prior art is to optimize the surface properties of the coating and the stability of the coating so that the properties of the coating agent, which is often composed of several components, can be selected so as to achieve a sufficiently abrasion resistant surface.

Tämän keksinnön tarkoituksena on poistaa tunnetun tekniikan epäkohdat ja saada aikaan uudenlainen, ns. FG (Functional Graded)-pinnoite ja menetelmä 10 ja laitteisto päällystysterän tai vastaavan reunassa olevan kulutusta kestävän pinnoitteen valmistamiseksi. Keksinnön mukainen pinnoite ja menetelmä perustuu siihen ajatukseen, että pinnoitusaineen komponenttien sekoitussuhdetta muutetaan pinnoituksen aikana valitun mukaisesti.The object of the present invention is to eliminate the drawbacks of the prior art and to provide a new type of so-called. FG (Functional Graded) coating and method 10 and apparatus for producing a wear resistant coating on the edge of a coating blade or the like. The coating and method according to the invention are based on the idea that the mixing ratio of the coating agent components is changed during coating during the selected process.

15 Yksityiskohtaisesti keksinnön mukaiselle menetelmälle, laitteistolle ja käsittely-terälle tunnusomaiset piirteet on esitetty oheisissa patenttivaatimuksissa.Detailed features of the method, apparatus and treatment blade of the invention are set forth in the appended claims.

Seuraavassa keksintöä selostetaan yksityiskohtaisemmin esimerkin avulla viittaamalla oheiseen piirustukseen, joissa 20 kuvio 1 esittää keksinnön mukaisella laitteistolla valmistettua päällystysterää sovitettuna päällystystelan yhteyteen, ja kuvio 2 esittää päällystysterän pinnoitetta halkileikkauksena.In the following, the invention will be explained in more detail by way of example with reference to the accompanying drawing, in which Figure 1 shows a coating blade made with an apparatus according to the invention fitted in connection with a coating roll and Figure 2 shows a coating of a coating blade.

;* 25; * 25

Kuviossa 1 on esitetty paperin päällystämiseen tarkoitettu teräpäällystimessä, jossa pinnoitusaine 1 levitetään telojen välissä kulkevan paperirainan 2 pintaan ja tasoitetaan nuolen mukaisessa suunnassa pyöritettävän päällystystelan 3 sekä sen yhteyteen järjestetyn päällystysterän 4 avulla. Päällystysterän paperi-30 rainaa 2 kohti oleva reuna 41 on viistetty. Päällystysterien kulumiskestävyyden lisäämiseksi päällystysterän paperirainaa kohti oleva reuna 41 pinnoitetaan rai-nan tulosuunnassa kulutusta kestävällä pinnoitteella 42.Figure 1 presents a blade designed for coating paper in which a coating material 1 is applied, running between the rolls of the paper web 2 and the surface is smoothed in the direction of the arrow a rotatable applicator roll 3, and arranged in connection with the coating blade 4. The edge 41 of the coating blade toward the web 2 of paper 30 is bevelled. To increase the wear resistance of the coating blades, the edge 41 facing the paper web of the coating blade is coated with a wear-resistant coating 42 in the direction of the web.

Kulutusta kestävä pinnoite saadaan aikaan termisellä ruiskutuksella, kuten 35 plasma-, liekki- tai detonaatioruiskutuksella ruiskutuspistoolin (spray gun) avulla.A wear-resistant coating is achieved by thermal spraying, such as 35 plasma, flame or detonation spraying by means of a spray gun.

3 1 1 76763 1 1 7676

Kulutusta kestävä pinnoite 42 on kahden jauhemaisen pinnoitusaineen seos, jossa ensimmäinen pinnoite A voi olla kovametallia tai metalliseosta, esimerkiksi wolframikarbidia, kromikarbidia, titaanikarbidia, sisältäen mahdollisesti lisäaineita, ja toinen pinnoiteaine B vastaavalla tavalla jotakin toista ainetta, kuten ‘ 5 titaanioksidia, tai alumiinioksidia, Al203, esim. siten, että aineen A kiinnitysomi- naisuudet terämetalliin ovat hyvät ja aineen B pintaominaisuudet hyvät, jolloin aine A on yksin vasten terää ja aine B yksin ulkopinnassa. Ne ruiskutetaan termisesti kahden eri suuttimen avulla.Abrasion resistant coating 42 is a mixture of two powder coating agents wherein the first coating A may be a carbide or metal alloy, for example tungsten carbide, chromium carbide, titanium carbide, optionally containing additives, and the second coating agent B, respectively, another substance such as 15 titanium oxide or alum e.g., such that the bonding properties of the substance A to the blade metal are good and the surface properties of the substance B are good, wherein the substance A is alone against the blade and the substance B is alone on the outer surface. They are thermally injected by means of two different nozzles.

10 Pinnoite voi muodostua esim. kuvion 2 viiden kerroksen, jossa pintakerros on 421 ja pohjakerros 425, portaittain seuraavan taulukon mukaisesti: _kerros__aine A__aine B_ _421__100%__0%_ _422__75%__25%_ 423__50%__50%_ _424__25%__75%_ 425 0% 100%The coating may be formed, for example, in steps of the five layers of Figure 2 having a surface layer 421 and a base layer 425 according to the following table: _layer_substance A__ant B_ _421__100% __ 0% _ _422__75% __ 25% _ 423__50% __ 50% _ _424__25% __75% 100%

TAULUKKOTABLE

15 Seoksen koostumus voi vaihdella myös muissa suhteissa, ja seoksen koostumus voi vaihdella myös portaattomasti eli jatkuvasti.The composition of the mixture may also vary in other ratios, and the composition of the mixture may also vary continuously, i.e. continuously.

Kulutusta kestävän pinnoitteen valmistus tapahtuu keksinnön mukaisesti uudella keksinnön mukaisella pinnoitustekniikalla, termisellä ruiskutuksella (thermal 20 sprying), kuten plasmaruiskutus (APS = Atmospheric Plasma Spraying) tai suurnopeus liekkiruiskutuksella (HVOF = Hihh Velocity Oxy Fuel) avullaThe wear-resistant coating according to the invention is produced by a new coating technology according to the invention, by thermal spraying (APS = Atmospheric Plasma Spraying) or high speed flame spraying (HVOF = Hihh Velocity Oxy Fuel).

Alan ammattimiehelle on selvää, että keksinnön eri sovellutusmuodot eivät ra- joitu yksinomaan edellä esitettyyn sovellutusesimerkkiin, vaan ne voivat vaihdel- 25 la jäljempänä esitettävien patenttivaatimusten puitteissa. Päällystysterän lisäksi keksintöä voidaan soveltaa muihinkin paperirainan käsittelyteriin, kuten kaavin-ja kreppausteriin.It will be apparent to one skilled in the art that various embodiments of the invention are not limited solely to the above embodiment, but may vary within the scope of the following claims. In addition to the coating blade, the invention can also be applied to other paper web processing blades, such as a scraper and a creping blade.

Claims (11)

1. Förfarande för tillverkning av en slitagehärdig ytbeläggning (42) tili ett för behandling av en pappersbana avsett behandlingsblad (4), sasom ett bestrykar- 5 eller kräppningsblad eller en schaber, där beläggningsmaterialet bestär av ätminstone tva komponenter (A, B), kännetecknat av, att särskilt för att beläggningens vidhäftnings- och ytegenskaper ska förbättras de olika beläggningsämnena mätäs sä att beläggningsämnets sammansättning i djupled varierar. 10A method of manufacturing a wear-resistant surface coating (42) into a treatment sheet (4) for treating a paper web, such as a coating or creping blade or a shaker, wherein the coating material consists of at least two components (A, B), characterized in of, that especially in order to improve the adhesion and surface properties of the coating, the different coating substances are measured so that the composition of the coating substance in depth varies. 10 2. Förfarande enligt patentkrav 1, kännetecknat av, att beläggningsämnets sammansättning ändras stegvis.Process according to claim 1, characterized in that the composition of the coating material is changed stepwise. 3. Förfarande enligt patentkrav 1, kännetecknat av, att beläggningsämnets 15 sammansättning ändras steglöst.Process according to claim 1, characterized in that the composition of the coating substance 15 is continuously changed. 4. Förfarande enligt patentkrav 1, kännetecknat av, att beläggningen paförs genom termisk sprutning.Method according to claim 1, characterized in that the coating is applied by thermal spraying. 5. Anordning för tillverkning av en slitagehärdig ytbeläggning tili ett för behandling av en pappersbana avsett behandlingsblad (4), sasom ett bestrykar- eller kräppningsblad eller en schaber, där beläggningsmaterialet bestär av atminstone tvä komponenter (A, B) som mätäs via ett eller flera munstycken, kännetecknad av, att munstyckena styrs sä, att särskilt för att beläggningens vidhäftnings- och 25 ytegenskaper ska förbättras de olika beläggningsämnena mätäs sä att beläggningsämnets sammansättning i djupled varierar.Apparatus for manufacturing a wear-resistant surface coating into a treatment sheet (4) for treating a paper web, such as a coating or creping blade or a scraper, wherein the coating material consists of at least two components (A, B) measured via one or more nozzles, characterized in that the nozzles are controlled so that, especially in order to improve the adhesion and surface properties of the coating, the different coating substances are measured so that the composition of the coating substance in depth varies. 6. Anordning enligt patentkrav 5, kännetecknad av, att beläggningsämnets sammansättning ändras stegvis. 306. Device according to claim 5, characterized in that the composition of the coating material is changed stepwise. 30 7. Anordning enligt patentkrav 5, kännetecknad av, att beläggningsämnets sammansättning ändras steglöst. 7 1176767. Device according to claim 5, characterized in that the composition of the coating material is continuously changed. 7 117676 8. Anordning enligt patentkrav 5, kännetecknad av, att den är försedd med en ,- sprutpistol (spray gun) med vilken beläggningen paförs genom termisk sprutning (thermal spraying). * •8. Apparatus according to claim 5, characterized in that it is provided with a spray gun with which the coating is applied by thermal spraying. * • 9. Behandlingslinjal (4), sasom ett bestrykar- eller kräppningsblad eller en schaber, med en slitagehärdig ytbeläggning (42), där beläggningsmaterialet bestar av ätminstone tvä komponenter (A, B), kännetecknad av, att särskilt för att beläggningens vidhäftnings- och ytegenskaper ska förbättras beläggningsämnets sammansättning i djupled varierar. 10A treatment ruler (4), such as a coating or creping blade or a scraper, with a wear-resistant surface coating (42), wherein the coating material consists of at least two components (A, B), characterized in that in particular for the adhesion and surface properties of the coating. will improve the composition of the coating in depth varies. 10 10. Blad enligt patentkrav 9, kännetecknad av, att beläggningsämnets sammansättning ändras stegvis sä att det bestar av olika skikt (421-425) med olika sammansättning.10. A sheet according to claim 9, characterized in that the composition of the coating material is changed stepwise to consist of different layers (421-425) of different composition. 11. Behandlingsanordning med ett behandlingsblad (4), sisom ett bestrykar- eller kräppningsblad eller en schaber, med en slitagehärdig ytbeläggning (42), där beläggningsmaterialet bestar av atminstone tvä komponenter (A, B), kännetecknad av, att särskilt för att beläggningens vidhäftnings- och ytegenskaper ska förbättras beläggningsämnets sammansättning i djupled 20 varierar. 9 » :A treatment device with a treatment blade (4), such as a coating or creping blade or a shaker, with a wear-resistant surface coating (42), wherein the coating material consists of at least two components (A, B), characterized in that, in particular, the adhesion of the coating - and surface properties should be improved the composition of the coating in depth 20 varies. 9 »:
FI20050630A 2005-06-14 2005-06-14 Method and Equipment for Making a Wear Resistant Coating on a Sheet for Treating a Paper Path and Treatment Sheet FI117676B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20050630A FI117676B (en) 2005-06-14 2005-06-14 Method and Equipment for Making a Wear Resistant Coating on a Sheet for Treating a Paper Path and Treatment Sheet
PCT/FI2006/000197 WO2006134209A1 (en) 2005-06-14 2006-06-14 Method and apparatus for making a wear-resistant coating on a blade for the treatment of a paper web, and blade for the treatment of a paper web

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20050630 2005-06-14
FI20050630A FI117676B (en) 2005-06-14 2005-06-14 Method and Equipment for Making a Wear Resistant Coating on a Sheet for Treating a Paper Path and Treatment Sheet

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Publication Number Publication Date
FI20050630A0 FI20050630A0 (en) 2005-06-14
FI117676B true FI117676B (en) 2007-01-15

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FI20050630A FI117676B (en) 2005-06-14 2005-06-14 Method and Equipment for Making a Wear Resistant Coating on a Sheet for Treating a Paper Path and Treatment Sheet

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WO (1) WO2006134209A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009000562U1 (en) 2009-01-17 2009-03-12 Voith Patent Gmbh doctor blade
DE102009029698A1 (en) 2009-09-23 2011-03-24 Voith Patent Gmbh blade coating
DE102010062901A1 (en) * 2010-12-13 2012-06-14 Voith Patent Gmbh Impregnated blade coating
DE102013201740A1 (en) * 2013-02-04 2014-04-10 Voith Patent Gmbh Scraper blade, useful in coating unit of machine for producing and/or finishing fibrous web e.g. paper or cardboard web, comprises base substrate, and layers having quasi-continuous or stepwise changing material composition
CN108532352B (en) * 2018-03-26 2024-03-29 赣州恩创科技有限公司 Wrinkling cutter and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686156A (en) * 1985-10-11 1987-08-11 Gte Service Corporation Coated cemented carbide cutting tool
USRE34173E (en) * 1988-10-11 1993-02-02 Midwest Research Technologies, Inc. Multi-layer wear resistant coatings
GB2295400B (en) * 1994-11-01 1998-04-01 Plasma Coatings Ltd Blade and method of manufacture thereof
US5728434A (en) * 1995-08-08 1998-03-17 Pacific/Hoe Saw And Knife Company Method of applying a wear-resistant coating on a thin, metallic strip-shaped carrier

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FI20050630A0 (en) 2005-06-14
WO2006134209A1 (en) 2006-12-21

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