EP2551057B1 - Procédé de fabrication d'un agent abrasif stratifié, agent abrasif stratifié et utilisation d'un agent abrasif stratifié - Google Patents

Procédé de fabrication d'un agent abrasif stratifié, agent abrasif stratifié et utilisation d'un agent abrasif stratifié Download PDF

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Publication number
EP2551057B1
EP2551057B1 EP11175222.6A EP11175222A EP2551057B1 EP 2551057 B1 EP2551057 B1 EP 2551057B1 EP 11175222 A EP11175222 A EP 11175222A EP 2551057 B1 EP2551057 B1 EP 2551057B1
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EP
European Patent Office
Prior art keywords
abrasive
additive
abrasive grains
particles
grinding aid
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.)
Active
Application number
EP11175222.6A
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German (de)
English (en)
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EP2551057A1 (fr
Inventor
Adrian Schoch
Bruno Oberhänsli
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Sia Abrasives Industries AG
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Sia Abrasives Industries AG
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Publication date
Priority to EP11175222.6A priority Critical patent/EP2551057B1/fr
Application filed by Sia Abrasives Industries AG filed Critical Sia Abrasives Industries AG
Priority to KR1020147002018A priority patent/KR101949126B1/ko
Priority to US14/234,917 priority patent/US9555520B2/en
Priority to PCT/EP2012/064376 priority patent/WO2013014116A1/fr
Priority to CN201280036977.8A priority patent/CN103702801B/zh
Priority to BR112014001627-5A priority patent/BR112014001627B1/pt
Publication of EP2551057A1 publication Critical patent/EP2551057A1/fr
Application granted granted Critical
Publication of EP2551057B1 publication Critical patent/EP2551057B1/fr
Priority to US15/376,820 priority patent/US10562153B2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
    • B24D3/004—Flexible supporting members, e.g. paper, woven, plastic materials with special coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties

Definitions

  • the present invention relates to a process for producing a coated abrasive, a coated abrasive and the use of a coated abrasive.
  • abrasives such as abrasive belts or fiber discs
  • Some surfaces such as stainless steel, require additional coating of the abrasive with so-called "grinding aids".
  • KF 4 potassium tetrafluoroborate
  • the additional coating is applied as a liquid mixture which, in addition to the actual abrasive additive, may also contain a binder, a solvent (such as water) and optionally paints, rheology additives, wetting agents, defoamers or fillers.
  • This liquid mixture is applied to an abrasive precursor comprising a backing, a plurality of abrasive grains, and at least one cured first size coat.
  • the liquid applied additional coating is cured, for example by heating, so that there is a second coat layer.
  • the additive coating may also be applied to an abrasive precursor containing only a backing, a base binder, and abrasive grains, however no cape. The cured additional coating then forms the only covering binder.
  • EP 1 493 535 A1 Although it discloses that the abrasive additive is applied in powder form. However, this powder is applied exclusively to a cured cap binder.
  • the abrasive additive is applied in step b) in dry form, in particular scattered.
  • the abrasive precursor may contain one or more layers of a capping agent.
  • the bottom coat binder is usually referred to as a "top coat 1" or “size coat” and the top coat binder as a “top coat 2" or “supersize coat”.
  • the top coat binder is uncured, ie the top binder, which forms the outermost layer and faces away from the base of the abrasive precursor.
  • the dry-applied abrasive additive does not penetrate into deeper layers of the capping, but remains in a concentrated amount on its surface.
  • the abrasive additive is distributed relatively parallel to the surface of the abrasive and thus much more homogeneous. It thus accumulates less in the areas between the individual abrasive grains. Consequently, a larger proportion of the applied abrasive additive can come into contact with a surface to be processed, as is the case with the usual liquid application. Therefore, in the dry application of this invention, in most embodiments, less abrasive additive per area is needed than is required to achieve the same total stock removal with a conventional liquid coating.
  • the result is a higher one Intelabtragsmenge.
  • the application amount of the abrasive grains can be reduced compared to conventional abrasives; the resulting reduction in the total amount of material removed can be compensated for by the dry application of the grinding additive according to the invention.
  • the production process according to the invention is therefore significantly more economical. Since only comparatively little abrasive additive is present between the abrasive grains, more chip space remains there, in which abrasion arising during grinding can be absorbed; This also leads to an increase in the service life.
  • a dry applied abrasive additive can be firmly bonded to it solely by curing the cap binder.
  • the abrasive additive is fixed by the still uncured binder, as this can migrate by capillary forces in the dry grinding additive.
  • This type of production also eliminates the need to first prepare a liquid additional coating and then to cure this again by an additional process step.
  • a dry-applied abrasive additive results in much better fixation of the abrasive grains than is the case with wet-applied abrasive additive.
  • the abrasive grains therefore break out less easily when machining a surface. This effect is particularly pronounced at high application rates of the grinding additive.
  • the abrasive additive is relatively homogeneously distributed in a direction perpendicular to the backing so that a relatively high proportion is in the vicinity or even in direct contact with the abrasive grains. The binding force between abrasive grains and cap binder is thereby reduced.
  • dry is understood to mean that the abrasive additive is not applied as a dispersed or suspended constituent of a liquid dispersion or suspension. It is not excluded that the abrasive additive has liquid adhesions on its outer surface, which may be caused, for example, by atmospheric moisture. Overall, however, any liquid content of the material applied in step b) should be less than 5% by weight and preferably less than 1% by weight in the context of the invention. In many embodiments, such a low liquid content allows the grinding additive to flow freely and therefore can be easily applied.
  • a “grinding additive” is understood here and below as meaning a substance which has at least one, preferably more of the following properties: reduction of the temperature occurring during the grinding, in particular due to a lubricating effect; Reducing the temperature by melting and recrystallizing the abrasive additive; Prevention of metal plating (so-called “vitrification”); Preventing the oxidation of the machined surface (oxides are often harder and therefore harder to machine than metal); and / or preventing a transformation of the structure of the abrasive grains, for example from alpha corundum to the more brittle spinel.
  • the abrasive additive can be applied in step b) in the form of a powder, in the form of flakes, in the form of fibers, in the form of agglomerates and / or in the form of capsules, in particular sprinkled.
  • Below an agglomerate is here and below an accumulation of previously loose individual particles to a solidified Composite understood.
  • the solidification can take place, for example, by means of an additional substance and, for example, by pressing, hardening, drying and / or irradiation.
  • the abrasive additive is surrounded by a shell, which may contain, for example, waxes, fats and / or polymer solutions. The preparation of such capsules per se is known to the person skilled in the art.
  • the capsules may also contain liquid ingredients in addition to the abrasive additive. However, if these liquid ingredients are surrounded by the shell and can not escape from this, so these capsules are still considered within the scope of the invention as "dry" and streubar.
  • At least a major part of the particles of the abrasive additive has a size which is in the range from 0.1 ⁇ m to 2 mm, preferably from 0.1 ⁇ m to 0.5 mm, particularly preferably from 0.1 ⁇ m to 0.1 mm.
  • the d s90 value of the particle size distribution of the abrasive additive may range from 1 ⁇ m to 5 ⁇ m; the d.sub.50 value can be in the range of 10 .mu.m and 40 .mu.m ; the d s10 value can be in the range of 20 ⁇ m to 100 ⁇ m.
  • a d s90 value of 3 ⁇ m means that 90% by weight of the particles of the abrasive additive have a size of 3 ⁇ m or more.
  • the average size of the particles of the abrasive additive is less than the mean size of the abrasive grains. This allows the particles of the abrasive additive to evenly cover both the surfaces of the abrasive grains and the spaces therebetween.
  • the abrasive additive is in the form of agglomerates or capsules.
  • the ratio of the average diameter of the agglomerates to the mean diameter of the abrasive grains is preferably less than 5, more preferably less than 3 and even more preferably less than 2.
  • the average diameter of the agglomerates is smaller than the average diameter of the abrasive grains.
  • the size of the agglomerates is smaller than the ds3 value of the abrasive grains.
  • the grinding additive can be applied in an application amount ranging from 10 g / m 2 to 500 g / m 2 , preferably from 20 g / m 2 to 400 g / m 2 , particularly preferably from 25 g / m 2 to 250 g / m 2 lies.
  • application quantities in the range from 30 g / m 2 to 35 g / m 2 have proved particularly favorable at a particle size of # 400, with a particle size of # 36 in the range from 160 g / m 2 to 180 g / m 2 .
  • any substance which has also been used in the previously customary liquid application process can be used as the grinding additive.
  • the abrasive additive may for example contain or consist of a salt, which in particular contains boron and / or fluorine, in particular potassium tetrafluoroborate and / or cryolite.
  • the abrasive additive may also include mica, sand, pigments, fumed silica, carbon, glass, talc, corundum and / or contain or consist of other mineral substances.
  • the pad of the abrasive precursor may be any pad customary in the abrasive industry, particularly a flexible pad such as a textile pad, a paper, a film, vulcanized fiber, or a combination thereof.
  • the invention is also not limited to particular abrasive grains;
  • the abrasive grain may be, for example, corundum (in various variants, in particular white corundum, semi-precious corundum, blue corundum, zirconium corundum, and ceramic corundum and / or brown corundum), silicon carbide, cubic boron nitride, diamond or mixtures thereof.
  • the size of the abrasive grains is not essential to the invention.
  • the abrasive may be in various forms of manufacture, for example as a grinding wheel or abrasive belt.
  • the abrasive grains can be bonded to the substrate by means of a known basic binder.
  • a known basic binder This may be, for example, a synthetic resin known per se.
  • a known per se binder can be used, for example, also made of synthetic resin.
  • the capping agent may also contain other conventional active ingredients and / or fillers.
  • the capping agent may be a phenolic resin, an epoxy, a urea resin, a melamine resin or an unsaturated polyester resin. Particularly preferably, the capping agent is a phenolic resin or an epoxide.
  • the uncured size coat binder to which the abrasive additive is applied in step b) may have a viscosity which is conventional for abrasives without a further supercoat and without abrasive additive. The viscosity adjustment for a capping agent is known to the person skilled in the art.
  • the size coat binder can be applied in an amount ranging from 40 g / m 2 to 700 g / m 2 , preferably from 50 g / m 2 to 600 g / m 2 , particularly preferably from 60 g / m 2 to 500 g / m 2 be applied.
  • the solids content may be about in the range of 40 wt .-% to 95 wt .-%, preferably from 45 wt .-% to 93 wt .-%, particularly preferably from 50 wt .-% to 90 wt .-%.
  • the quantities applied and the solids content may depend on the size of the abrasive grains. For example, with a grain size of P400, an application rate of 67 g / m 2 and a solids content may be suitable, while with a grain size of P24 an application rate of 430 g / m 2 and a solids content of 88% may be more advantageous.
  • Another aspect of the invention is a coated abrasive obtainable by a process as described above wherein the average size of the particles of the abrasive additive is less than the average size of the abrasive grains.
  • an abrasive comprises a backing, a plurality of abrasive grains bonded to the backing, a size coat binder which at least partially covers the abrasive grains, and at least one abrasive additive which has been dry applied and bound by the size coat.
  • the abrasive additive is distributed more homogeneously parallel to the surface of the abrasive than in conventional wet application.
  • a large part of the particles of the abrasive additive is in the vicinity of the surface of the top coat.
  • the average application rate of abrasive additive particles above the abrasive grains is less than 60%, preferably less than 50%, most preferably less than 40%, of the average abrasive particle particle size between the abrasive grains.
  • Order volume is understood to mean the mass occupancy per area, which can be expressed in g / m 2 .
  • the particles of the abrasive additive are thus not particularly enriched between the abrasive grains nor above the abrasive grains and thus visibly more homogeneous than distributed with roller application over the entire surface.
  • “Above the abrasive grains” means the particles of the abrasive additive are arranged on the side of the abrasive grains facing away from the backing.
  • the ratio of the layer thickness of the abrasive additive above the abrasive grains to the layer thickness of the abrasive additive between the abrasive grains is preferably at least 30%, preferably at least 50%, particularly preferably at least 70%. Such a ratio means that above the abrasive grains is a larger relative proportion of the abrasive additive than is the case with conventional liquid coated abrasives.
  • the layer thickness of the abrasive additive at the tips of the abrasive grains is very low, so that uncoated grain tips are visible from the eye.
  • the layer thickness can be determined by measuring a photograph of a sectional view of the abrasive. The photo can be taken by a microscope.
  • FIG. 1a schematically illustrated conventional coated abrasive comprises a base 1, abrasive grains 3, which are bonded by means of a base binder 2 to the pad 1, and a cap binder 4, which covers the abrasive grains 3.
  • a liquid additive coating 6 was applied by means of rollers containing a multiplicity of particles 5 of a grinding additive.
  • the particles 5 were substantially enriched between the individual abrasive grains 3. In this way, a large part of the particles 5 when processing a surface does not come into contact with this.
  • FIG. 1b As can be seen, a portion of the abrasive grains 3 has been removed. However, many particles 5 of the abrasive additive have remained unused until then, which is economically very ineffective.
  • FIG. 2a shows an abrasive according to the invention in which the abrasive additive has been applied dry as explained in more detail below.
  • the particles 5 of the abrasive additive are arranged in the vicinity of the outer surface of the cap binder 4. In addition, they are distributed more homogeneously over this surface and not enriched in the areas between the abrasive grains 3. In this way, a larger proportion of the particles 5 of the abrasive additive comes into contact with a surface to be processed and can unfold its desired effect there. This larger share is in the in FIG. 2b shown used state of the abrasive 1 removed.
  • abrasive precursors were first prepared. These contained a pad 1 of vulcanized fiber of thickness 0.8 mm. Abrasive grains 3 of two different corundum variants of sizes # 36 and # 50 were bonded to the base 1 in an amount of 800 g / m 2 (particle size # 36) or 570 g / m 2 (particle size # 50) by means of a base binder 2.
  • the basic binder 2 of phenol resin and chalk was applied in an amount of 178 g / m 2 (particle size # 36) or 175 g / m 2 (particle size # 50).
  • the potassium tetrafluoroborate powder was purchased from Solvay Fluor GmbH, 30173 Hannover, Germany.
  • the size distribution of the particles of the powder is determined by the cumulative distribution in FIG. 3 given.
  • the abrasive additive was applied in the form of a liquid additive coating.
  • This liquid additional coating had the following composition: Phenolic resin 75% 12% by weight KBF 4 50% by weight cryolite 10% by weight water 17% by weight Dye, wetting agent, TiO2, plasticizer, thickener 11% by weight
  • the potassium tetrafluoroborate particles in each of the examples each had an average size of 25 ⁇ m.
  • Table 1 documents for the abrasives according to Examples 1 to 7 the total abrasion which could be achieved with these abrasives with abrasive grains of grain size # 36.
  • the cured abrasive was punched into 180 mm diameter abrasive wheels.
  • the grinding wheels were mounted on a grinding machine, operated at a cutting speed of 33.6 m / s and pressed with a force of 50 N vertically successively on a plurality of juxtaposed, 4 mm thick plates made of stainless steel (X5CrNi18-10 1.4301).
  • the tangential feed was 1.5 m / min, which was ground with a contact roller.
  • the amount of material removed was determined individually for each plate. The processing was carried out until the removal amount per plate had fallen to approximately 35% of the removal rate of the first plate.
  • Table 1 shows the total stock removal and coating loss achieved, that is, the mass of the original abrasive disc removed from it during processing.
  • Example No. 3 dry application (Example No. 3) is compared to the usual, wet Application (example # 1) only needed about half the abrasive additive to achieve about the same total removal.
  • Table 1 Example no. 1 2 3 4 5 6 7 order type wet (comparative example, averages of 8 samples) dry dry dry dry dry dry Order quantity KBF 4 [g / m 2 ] 172 (contained in 344 g / m 2 wet applied additional coating) 43 87 112 152 178 208 Total removal [g] 159 119 160 180 192 216 220 Covering loss [g] 3.5 2.9 3.0 3.1 3.4 3.4 4.0
  • FIGS. 4 to 7 contain photographs of top views on the coated abrasives 8 to 11 according to Table 2.
  • the FIGS. 4 and 5 So show abrasive with a grain size # 36, where FIG. 4 a grinding wheel according to the invention with dry applied abrasive additive shows and FIG. 5 an abrasive with wet abrasive additive.
  • the FIGS. 6 and 7 show abrasives with grain size # 50.
  • the particles of the abrasive additive according to the inventive, dry application ( FIGS. 4 and 6 ) on the surface of the abrasive and especially also above the individual abrasive grains available.
  • the particles of the abrasive additive are distributed substantially homogeneously over the surface.
  • the particles of the abrasive additive further penetrated between the abrasive grains and therefore practically no longer visible.
  • Table 2 Example no. 8th 9 10 11 Figure no.
  • FIG. 5 is a photograph of a sectional view through a conventional abrasive wherein the abrasive additive 5 is embedded in a liquid applied additive coating 6. As can be clearly seen here, a large part of the abrasive additive is in the areas between the abrasive grains 3, where it can not develop its intended effect, however.
  • FIG. 9 shows a photograph of a sectional view through another abrasive according to the invention.
  • the abrasive grains 3 are bonded by means of a base binder 2 to a substrate 1 of vulcanized fiber of 0.8 mm thickness.
  • Base 1, base binder 2 and abrasive grains 3 are of a layer of cap binder. 4 covered.
  • Above this layer is another layer of dry-applied abrasive additive 5.
  • the layer of abrasive additive 5 has a substantially homogeneous thickness.
  • the abrasive additive 5 has practically not penetrated into the layer of cap binder 4.
  • the particles of the abrasive additive 5 are bound directly by the cap 4. Thus, it requires no further binder, as is required in the conventional, wet application of the additional coating.
  • FIG. 10 Abbott curves of several abrasives are shown, which were determined according to DIN EN ISO 4287.
  • the first curve (1) was measured on a pad to which an abrasive grain mixture of corundum was bonded. This mixture contained P120 semi-precious corundum and # 120 grade ceramic corundum.
  • This pad had a height difference of 436 microns.
  • the height difference is understood here and below to mean the difference between the heights of a surface of the surface farthest from the substrate and a surface closest to the substrate; the height difference is thus equal to the difference of the ordinate values of the Abbott curve at 0% and at 100%.
  • the second curve (2) After application of a cap binder, the second curve (2) with a height difference of 368 ⁇ m resulted.
  • the third curve (3) was determined for an inventive abrasive in which potassium tetrafluoroborate (KBF 4 ) of an average particle size of 25 microns and in an amount of about 64 g / m 2 was applied dry; the height difference here is 386 ⁇ m.
  • the fourth curve (4) shows the result for a conventional abrasive in which the potassium tetrafluoroborate was applied in a dispersion; it resulted in a height difference of 288 microns. The dispersion was applied in an amount of 120 g / m 2 , which resulted in an application rate of 54 g / m 2 of potassium tetrafluoroborate.
  • the third curve (3) of the abrasive according to the invention is at less than about 15% of material levels above the fourth curve (4) of the conventional abrasive, while it is lower at higher material levels. This is due to the fact that with dry application a relatively large number of the particles of the abrasive additive are in the region of the highest elevations (ie in the region of a cutting chamber depth of 0 ⁇ m). With wet application according to curve (3) a larger part of the abrasive additive has sunk into the area between abrasive grains, so that here the material content is greater for larger cutting room depths.
  • the height difference of the curve (3) for the inventive abrasive larger than the height difference of the curve (4) to the conventional abrasive. This is also due to the fact that a large proportion of the particles of the abrasive additive is in the region of the highest elevations.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (10)

  1. Procédé de fabrication d'un article abrasif appliqué, comprenant les étapes suivantes :
    a) fabrication ou fourniture d'un précurseur d'agent abrasif, comprenant un support (1), une pluralité de grains abrasifs (3) qui sont liés au support ainsi qu'au moins une couche d'un liant de recouvrement (4) qui recouvre au moins en partie les grains abrasifs (3), le liant de recouvrement supérieur (4) n'étant pas durci ;
    b) application d'au moins un additif abrasif sur le liant de recouvrement supérieur (4) non durci ;
    c) durcissement du liant de recouvrement supérieur (4) ;
    caractérisé en ce que
    l'additif abrasif est appliqué à l'étape b) sous forme sèche, en particulier par saupoudrage.
  2. Procédé selon la revendication précédente,
    caractérisé en ce que
    l'additif abrasif est appliqué, notamment saupoudré, à l'étape b) sous forme de poudre, en particulier sous forme de flocons, sous forme de fibres, sous forme de particules agglomérées et/ou sous forme de capsules.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    au moins 90 % en poids, de préférence au moins 95 % en poids, plus préférablement au moins 99 % en poids des particules (5) de l'additif abrasif, en particulier toutes les particules (5) de l'additif abrasif présentent une taille comprise dans la plage de 0,1 µm à 2 mm, de préférence de 0,1 µm à 0,5 µm, particulièrement préférablement de 0,1 µm à 0,1 mm.
  4. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la taille moyenne des particules (5) de l'additif abrasif est inférieure à la taille moyenne des grains abrasifs (3).
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'additif abrasif est appliqué dans une quantité d'application qui est comprise dans une plage de 10 g/m2 à 500 g/m2, de préférence de 20 g/m2 à 400 g/m2, particulièrement préférablement de 25 g/m2 à 250 g/m2.
  6. Article abrasif appliqué, pouvant être obtenu par un procédé selon l'une quelconque des revendications précédentes, dans lequel la taille moyenne des particules (5) de l'additif abrasif est inférieure à la taille moyenne des grains abrasifs (3).
  7. Article abrasif appliqué selon la revendication 6,
    caractérisé en ce que
    le rapport de l'épaisseur de couche de l'additif abrasif au-dessus des grains abrasifs (3) à l'épaisseur de couche de l'additif abrasif entre les grains abrasifs (3) est d'au moins 30 %, de préférence d'au moins 50 %, particulièrement préférablement d'au moins 70 %.
  8. Article abrasif appliqué selon l'une quelconque des revendications 6 et 7,
    caractérisé en ce que
    au moins 60 % en poids, de préférence au moins 80 % en poids, particulièrement préférablement au moins 90 % en poids des particules (5) de l'additif abrasif sont disposés dans une couche extérieure de l'agent abrasif dont l'épaisseur vaut au maximum 60 %, de préférence au maximum 40 %, particulièrement préférablement au maximum 30 % de l'épaisseur totale de la couche constituée du liant de recouvrement supérieur (4) et de l'additif abrasif.
  9. Article abrasif appliqué selon l'une quelconque des revendications 6 à 8, caractérisé en ce que la quantité d'application moyenne des particules (5) de l'additif abrasif au-dessus des grains abrasifs (3) s'écarte de la quantité d'application moyenne des particules (5) de l'additif abrasif entre les grains abrasifs (3) de moins de 60 %, de préférence de moins de 50 %, particulièrement préférablement de moins de 40 %.
  10. Utilisation d'un article abrasif appliqué selon l'une quelconque des revendications 6 à 9 pour le traitement d'une surface, en particulier d'une surface qui contient au moins un métal ou se compose de celui-ci, en particulier d'acier inoxydable, de titane et/ou d'au moins un superalliage.
EP11175222.6A 2011-07-25 2011-07-25 Procédé de fabrication d'un agent abrasif stratifié, agent abrasif stratifié et utilisation d'un agent abrasif stratifié Active EP2551057B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP11175222.6A EP2551057B1 (fr) 2011-07-25 2011-07-25 Procédé de fabrication d'un agent abrasif stratifié, agent abrasif stratifié et utilisation d'un agent abrasif stratifié
US14/234,917 US9555520B2 (en) 2011-07-25 2012-07-23 Method for producing a coated grinding means
PCT/EP2012/064376 WO2013014116A1 (fr) 2011-07-25 2012-07-23 Procédés destiné à fabriquer un abrasif pourvu d'un revêtement, abrasif pourvu d'un revêtement et utilisation d'un abrasif pourvu d'un revêtement
CN201280036977.8A CN103702801B (zh) 2011-07-25 2012-07-23 用于制造涂层的磨具的方法、涂层的磨具以及涂层的磨具的应用
KR1020147002018A KR101949126B1 (ko) 2011-07-25 2012-07-23 피복된 연삭 수단의 제조 방법, 피복된 연삭 수단, 및 피복된 연삭 수단의 용도
BR112014001627-5A BR112014001627B1 (pt) 2011-07-25 2012-07-23 método para a produção de um produto abrasivo revestido e produto abrasivo revestido
US15/376,820 US10562153B2 (en) 2011-07-25 2016-12-13 Coated grinding means

Applications Claiming Priority (1)

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JPWO2017203848A1 (ja) * 2016-05-27 2019-03-22 株式会社アライドマテリアル 超砥粒ホイール
BR112019013057B1 (pt) * 2016-12-23 2023-10-17 Saint-Gobain Abrasives, Inc. Abrasivos revestidos apresentando uma composição de melhoria de desempenho
DE102017216175A1 (de) * 2017-09-13 2019-03-14 Robert Bosch Gmbh Schleifartikel
CN111527176A (zh) * 2017-12-27 2020-08-11 圣戈班磨料磨具公司 具有聚集体的涂覆磨料
DE102019126288A1 (de) 2019-09-30 2021-04-01 Vsm Vereinigte Schmirgel- Und Maschinen-Fabriken Ag Verfahren und Beschichtungsvorrichtung zum Beschichten eines Trägerbandes
DE102019218560A1 (de) * 2019-11-29 2021-06-02 Robert Bosch Gmbh Schaumschleifmittel und Verfahren zur Herstellung
DE102020208075A1 (de) 2020-06-30 2021-12-30 Robert Bosch Gesellschaft mit beschränkter Haftung Schleifartikel und Verfahren zur Herstellung
CN112548882B (zh) * 2020-12-31 2024-05-17 河南永泰磨具有限公司 一种砂轮及其制造方法
CN113649957B (zh) * 2021-08-13 2024-06-04 广州砺风新材料科技有限公司 一种钢轨切割砂轮及其制备方法

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US9555520B2 (en) 2017-01-31
KR101949126B1 (ko) 2019-02-19
WO2013014116A1 (fr) 2013-01-31
US10562153B2 (en) 2020-02-18
CN103702801A (zh) 2014-04-02
US20140179206A1 (en) 2014-06-26
EP2551057A1 (fr) 2013-01-30
US20170087692A1 (en) 2017-03-30
KR20140061362A (ko) 2014-05-21
BR112014001627A2 (pt) 2017-02-21
CN103702801B (zh) 2017-09-12
BR112014001627B1 (pt) 2020-11-17

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