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WO1993014236A1 - Surface d'usure - Google Patents

Surface d'usure Download PDF

Info

Publication number
WO1993014236A1
WO1993014236A1 PCT/GB1993/000023 GB9300023W WO9314236A1 WO 1993014236 A1 WO1993014236 A1 WO 1993014236A1 GB 9300023 W GB9300023 W GB 9300023W WO 9314236 A1 WO9314236 A1 WO 9314236A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
adhesive
layer
base plate
metal
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.)
Ceased
Application number
PCT/GB1993/000023
Other languages
English (en)
Inventor
Robert Kay
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.)
Rio Tinto Alcan Inc
SIMEC Lochaber Hydropower 2 Ltd
Original Assignee
Alcan Aluminum Ltd
SIMEC Lochaber Hydropower 2 Ltd
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
Priority claimed from GB929200610A external-priority patent/GB9200610D0/en
Priority claimed from GB929218004A external-priority patent/GB9218004D0/en
Application filed by Alcan Aluminum Ltd, SIMEC Lochaber Hydropower 2 Ltd filed Critical Alcan Aluminum Ltd
Priority to DE69304043T priority Critical patent/DE69304043D1/de
Priority to EP93901845A priority patent/EP0620866B1/fr
Publication of WO1993014236A1 publication Critical patent/WO1993014236A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C23C4/18—After-treatment
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material

Definitions

  • This invention relates to the provision of a wear surface on a base structure.
  • the term "wear surface” has been used to include such a surface applied to a base structure to protect the structure from physical damage in arduous industrial conditions and/or to provide the base structure with an anti-skid surface to enhance the safety of operatives walking thereon or to improve the traction of vehicles. Such wear surfaces are commonplace in factories, shopping centres and in many other places.
  • the base structure may, for example be a concrete floor or it may be a metal base plate.
  • anti-skid surfaces are made deliberately rough whereas surfaces to protect the structure from damage do not need a rough finish. Both kinds of surface may be of the same composition; variation in texture being obtained by differences in the way the surface is applied.
  • EP 0331519A there is disclosed a method of producing a corrosion and mechanical wear resistant coating on a metal surface to be protected which comprises (a) providing a rod or wire formed of a metal matrix composite comprising a metal matrix having distributed therein a finely divided solid filler material and (b) applying a coating of said metal matrix composite on said metal surface to be protected by means of a flame spraying or arc spraying process.
  • Such an installation may for example be an oil rig or support platform to be located at sea or installations such as refineries or petroleum product storage facilities. In such circumstances it would not be possible to use the process of EP 0331519A on an operational oil rig. It would also not be possible to replace a damaged steel base plate on site. Nevertheless it is very desirable that damaged wear surfaces on such installations should be removable and replaceable on site.
  • a method of forming a wear surface on a base structure comprising a metal layer having distributed therein at least one solid filler characterised by the steps of:-
  • the metal layer is of aluminium or an aluminium alloy.
  • a self supporting substrate having a wear surface thereon in which the wear surface is a metal layer having distributed therein at least one solid filler and in which the layer is applied to one surface of the substrate at least parts of that one surface being capable of intimately bonding with said layer.
  • solid filler to mean a fibrous or particulate material which is capable of being incorporated in and distributed through a suitable metal and which at least substantially maintains its integrity as incorporated rather than losing its form or identity by dissolution in or chemical combination with the metal.
  • the filler may for example be selected from alumina, titanium diboride, silica, zirconia silicon carbide, silicon nitride and aluminium/titanium boride complexes.
  • the size of filler particles may be from 5 to 30 microns and is preferably within the range 7 to 20 microns.
  • the filler may comprise 5.0 to 25 volume percent of the metal and is preferably 8.0 to 12.0 volume percent thereof.
  • a coil 1 of an aluminium alloy strip 2 is unwound and passes successively through an optional abrading zone 3 where its upper surface is roughened by grit blasting or scratch brushing and an induction heating zone 4 to raise the temperature of the strip 2 to about 200°C.
  • the strip then passes over a heated table 5 to provide a firm support through a spray zone 6.
  • one or more spraying devices 7 is movable to coat the upper surface of the strip 2 with a coating as described in EP 0331519A. This coating is of a metal matrix composition and constitutes a wear surface to the strip.
  • the strip then passes between driven nip rolls 8 past a zone 9 having a flying shear mechanism 10 where the strip is cut into individual substrates constituting tiles 11.
  • the coating may be of such thickness as to weigh 0.5 to 3.0 kg/m 2 and preferably 1.0 to 2.0 kg/m 2 .
  • the coating should be thicker to protect against corrosion.
  • the coating may be of such thickness as to weigh 1.0 to 6.0 kg/m 2 and preferably 2.0 to 5.0 kg/m 2 . Thicker coatings may, if desired be provided by more than one spraying operation.
  • a roll of sheet impact adhesive material 12 (with a strippable backing sheet) may be located below the strip 2 and unwound by being passed with the strip 2 through the nip rolls 8 so that the material 12 is bonded to the lower surface of the strip 2. If this arrangement is used the abrading zone 3 may also suitably prepare the lower surface to enhance bonding of 'th material 12 thereto.
  • the lower surface of the strip 2 may be coated with a non curing pressure-sensitive, adhesive, formulated on th basis of synthetic resins such as polyisobutylen ["Oppanol" from BASF for example] or a polyvinylisobuty ether, or based on combinations of nitrile rubber an tackifier resin based on terpene oil.
  • the coating may b applied by a blade (not shown) from a heated melt of th adhesive or directly from a slot (not shown) in a suitabl applicator.
  • a roll of release-coated backing paper i interleaved in the manner of the material 12 immediatel after the adhesive application.
  • the tiles 11 may be rectangular or square and of a readily handleable size, say 750 mm square.
  • the tiles may each be in the form of an elongated strip.
  • comparatively thin tiles or strip are, in general, envisaged by this invention such tiles or strips may have a thickness of up to 20 mm or more.
  • the abrading zone 3 is referred to above as "optional" since it has sometimes been found that merely heating the strip 2 to about 200SC is sufficient. Indeed in some cases even this metal heating step may not be necessary.
  • the heated table 5 may be omitted from the arrangement of the drawing.
  • the surface of the latter is cleaned.
  • cleaning may be by blasting with a grit having a composition that precludes the generation of sparks.
  • the blasted surface may be primed with a coating compatible with the tile adhesive and capable of protecting the surface against corrosion and/or damage until the tile is laid.
  • pressure sensitive non-curing adhesives as described above can be used it will be understood that other ways of sticking the tiles or strips to a base plate may be employed.
  • a high strength adhesive may be used with tiles subjected to heavy applied loads especially impact or shear loads.
  • the adhesive may have considerable inherent strength so that it contributes to the physical properties of the structure comprising tiles, the adhesive and the base plate.
  • Another variation is to use an adhesive that never completely sets so that a damaged tile can be readily peeled from its base plate for replacement.
  • the tiles may be relatively thick and may be of a strong aluminium alloy or relatively thin and may be a soft, ductile alloy, for example a lxxx alloy, which can be deformed to follow irregularities in the base plate.
  • a polymerisable two part adhesive may be used that has considerable inherent strength so that it contributes to the physical properties of the structure comprising the tiles, the adhesive and the base plate.
  • the two parts of the adhesive may be mixed together and applied to the tiles or the base plate as the tiles are laid.
  • the adhesive may be applied only to parts of the surface of each tile.
  • the adhesive may incorporate electrically conducting particles.
  • the base plate is of a ferrous alloy
  • aluminium alloy tiles can constitute sacrificial anodes therefor.
  • the tiles could be electrically connected with the base plate by a mechanical link.
  • the filler used should not corrode or assist the corrosion of the tiles.
  • copper or graphite particles should not be used whereas all the particles referred to above are satisfactory.
  • tiles may be pre-shaped before application of the wear resistant layer.
  • metal tiles of aluminium or an aluminium alloy have been described above it will be understood that these may be of other metals such as steel.
  • the substrate may be a self-supporting web of a non-metallic material to which the wear layer is capable of bonding.
  • a web may be a mat incorporating glass particles or glass fibres such as a glass reinforced plastics material.
  • the plastics material may incorporate a resin that constitutes one component of a two part adhesive, the other part of which is applied to the base plate.
  • the resin may itself be a low temperature heat setting adhesive.
  • a commonly used example of such a plastic material substrate would be a conventional floor tile, usually about 2.0 mm thick in which a mat of glass fibre is embedded in a thermoplastic plastics material.
  • a tile or sheet during a continuous manufacturing process
  • Such a tile could be abraded as by shot blasting on one surface to expose sufficient of the glass fibre mat to receive the wear resistant layer.
  • arc spraying directly on to a glass reinforced plastics surface is less satisfactory than flame spraying or plasma spraying.
  • a flame sprayed layer may be followed by an arc sprayed layer.
  • the self supporting web may have any convenient combination of layered materials both to receive the sprayed on layer and also to fulfil requirements of strength, convenient handling and securing to a base.
  • an additional mat of glass reinforced fibre could be applied during manufacture of the tile to be exposed on one surface thereof so as to eliminate the abrading step or at least materially reduce it.
  • the resultant tile thickness is likely to be at least 2.0 mm and may be much thicker.
  • the wear resistant layer is likely to be between 0.2 mm and 0.7 mm thick.
  • the peel resistance of even a high strength adhesive may be comparatively low.
  • one corner may be prized up and a slotted bar (not shown) engaged therewith.
  • the bar may have one end formed for engagement with a ratchet handle to rotate it and wind the tile around the bar to peel it off the base plate.
  • the wear resistant layer may be of variable thickness to provide surface channels to facilitate shedding of liquid or solid detritus from vehicle wheels passing thereover. Although it is preferred to stick the tiles to the base plate it will be understood that mechanical fasteners could be used.
  • the spraying techniques of the present invention should preferably be carried out at atmospheric pressure.
  • the alloy and temper of the wire used for spraying may be 1060-H 18; aluminium oxide particles in the wire may be 8-10 ⁇ m in size and the metallising wire may contain 10 volume percent of the oxide particles.
  • Tiles according to the present invention have been tested under arduous conditions both with respect to surface grip and wear and skid resistance.
  • the surface grip results mentioned below were derived from tests conducted by the Flight Systems and Measurement Laboratory, of the Cranfield Institute of Technology and are based on standards used for helideck surfaces on offshore oil rigs.
  • a Grip Test value of 0.7 or above (wet or dry surface) represents a surface with good deck friction where no helideck nets are required and where no check on surface frictional properties needs to be made for one year.
  • the tests were carried out in the hot rolling department of an aluminium rolling mill.
  • the monthly traffic volume was predicted to be 250,000 tonnes of forklift truck movement with maximum individual axle loadings of 68 tonnes.
  • the floor location chosen was an area in the path of forklift trucks where they needed to change direction through 90° at their maximum permissible speed.
  • the floor conditions were generally oily and wet depending on external weather conditions as the truck movements were partly from the exterior of the building. - lo ⁇
  • the floor area comprised a sound flat concrete floor.
  • Substrate aluminium alloy sheet in alloy 1050A to BS 1470, of nominal thickness 0.25 mm and 0.9 mm were grit blasted to Sa 2% to provide an anchor tooth profile and were coated with nominally 1.22 kg/m 2 of a wear surface according to the present invention which was applied by arc spraying.
  • Total weight of tile at 0.25 mm thick was 1.9 kg/m 2 and at 0.9 mm thick was 3.66 kg/m 2 .
  • Tiles according to the invention were bonded to worn and cleaned surfaces simulating repair and refurbishment conditions after approximately 750,000 tonnes of traffic movements over the tiles on Plates A, B, C and D above. The following procedure was adopted.
  • a patch repair was simulated on Plate C by applying four new 0.9 mm thick anti-skid coated tiles with two different types of adhesive, Permabond V 501 and V 6018, to the previously cleaned existing part sealed and part un-sealed anti-skid surface.
  • a patch repair was also simulated on Plate D by applying four new 0.9 mm thick tiles with two types of adhesive, Permabond F 245 and V 501 to the previously cleaned existing anti-skid surface.
  • the adhesives used in Phase Two were Permabond F 245, V 501, V 6018 and E 04.

Landscapes

  • 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)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention se rapporte à un procédé pour former une surface d'usure sur une structure de base, la surface d'usure se composant d'une couche métallique sur laquelle est répartie au moins une charge solide. Le procédé consiste: 1) à produire un substrat auto-porteur dont au moins les parties d'une surface unique peuvent se lier intimement à ladite couche; 2) à appliquer la couche sur cette surface unique par une technique de pulvérisation à haute température, sélectionnée parmi les pulvérisations à flamme ou à plasma et la fusion en arc électrique; et ensuite 3) à fixer le substrat à la structure de base, une surface étant opposée à la surface unique de contact.
PCT/GB1993/000023 1992-01-10 1993-01-08 Surface d'usure Ceased WO1993014236A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69304043T DE69304043D1 (de) 1992-01-10 1993-01-08 Verschleissfeste oberfläche
EP93901845A EP0620866B1 (fr) 1992-01-10 1993-01-08 Surface d'usure

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB929200610A GB9200610D0 (en) 1992-01-10 1992-01-10 Wear surface
GB9200610.5 1992-01-10
GB9218004.1 1992-08-24
GB929218004A GB9218004D0 (en) 1992-08-24 1992-08-24 Wear surface

Publications (1)

Publication Number Publication Date
WO1993014236A1 true WO1993014236A1 (fr) 1993-07-22

Family

ID=26300150

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/000023 Ceased WO1993014236A1 (fr) 1992-01-10 1993-01-08 Surface d'usure

Country Status (5)

Country Link
EP (1) EP0620866B1 (fr)
AU (1) AU3262393A (fr)
CA (1) CA2127439A1 (fr)
DE (1) DE69304043D1 (fr)
WO (1) WO1993014236A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000043569A1 (fr) * 1999-01-22 2000-07-27 Elpatronic Ag Procede pour recouvrir des zones de couches protectrices endommagees, dispositif pour mettre en oeuvre ledit procede et systeme de transport
WO2008112091A1 (fr) * 2007-03-14 2008-09-18 Lucent Technologies, Inc. Matériaux composites thermoplastiques pour des surfaces d'usure, et leurs procédés de fabrication
CN107954246A (zh) * 2017-11-29 2018-04-24 浙江码尚科技有限公司 一种硅油纸的防滑辅助装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR495676A (fr) * 1917-10-11 1919-10-15 Walter Gordon Clark Perfectionnements aux feuilles de recouvrement pour appareils de navigation aérienne et aux procédés pour les fabriquer
GB2212198A (en) * 1987-11-12 1989-07-19 Angli Holding Bv An anti-bacterial, antifungal zinc foil or tape for coating a surface
EP0331519A1 (fr) * 1988-03-04 1989-09-06 Alcan International Limited Production de revêtements de matériau composite à matrice d'aluminium sur des structures métalliques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR495676A (fr) * 1917-10-11 1919-10-15 Walter Gordon Clark Perfectionnements aux feuilles de recouvrement pour appareils de navigation aérienne et aux procédés pour les fabriquer
GB2212198A (en) * 1987-11-12 1989-07-19 Angli Holding Bv An anti-bacterial, antifungal zinc foil or tape for coating a surface
EP0331519A1 (fr) * 1988-03-04 1989-09-06 Alcan International Limited Production de revêtements de matériau composite à matrice d'aluminium sur des structures métalliques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 243 23 May 1990 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000043569A1 (fr) * 1999-01-22 2000-07-27 Elpatronic Ag Procede pour recouvrir des zones de couches protectrices endommagees, dispositif pour mettre en oeuvre ledit procede et systeme de transport
US6649209B1 (en) 1999-01-22 2003-11-18 Elpatronic Ag Method for covering damaged protective layer areas, device for implementing said method and transport system
US7118628B2 (en) 1999-01-22 2006-10-10 Elpatronic Ag Method and apparatus for covering areas of damaged protective coating, and a transport system
WO2008112091A1 (fr) * 2007-03-14 2008-09-18 Lucent Technologies, Inc. Matériaux composites thermoplastiques pour des surfaces d'usure, et leurs procédés de fabrication
US7718724B2 (en) 2007-03-14 2010-05-18 Alcatel-Lucent Usa Inc. Thermoplastic composite materials for wear surfaces and methods for making same
CN107954246A (zh) * 2017-11-29 2018-04-24 浙江码尚科技有限公司 一种硅油纸的防滑辅助装置

Also Published As

Publication number Publication date
CA2127439A1 (fr) 1993-07-22
EP0620866B1 (fr) 1996-08-14
AU3262393A (en) 1993-08-03
DE69304043D1 (de) 1996-09-19
EP0620866A1 (fr) 1994-10-26

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