EP0820364B1 - Grinding tool with a metal-synthetic resin binder and method of producing the same - Google Patents

Grinding tool with a metal-synthetic resin binder and method of producing the same Download PDF

Info

Publication number
EP0820364B1
EP0820364B1 EP97901222A EP97901222A EP0820364B1 EP 0820364 B1 EP0820364 B1 EP 0820364B1 EP 97901222 A EP97901222 A EP 97901222A EP 97901222 A EP97901222 A EP 97901222A EP 0820364 B1 EP0820364 B1 EP 0820364B1
Authority
EP
European Patent Office
Prior art keywords
grinding tool
bonding agent
network
bond
abrasive
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.)
Expired - Lifetime
Application number
EP97901222A
Other languages
German (de)
French (fr)
Other versions
EP0820364A1 (en
Inventor
Markus Fischbacher
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.)
Tyrolit-Schleifmittelwerke Swarovski KG
Original Assignee
Tyrolit-Schleifmittelwerke Swarovski KG
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
Application filed by Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Publication of EP0820364A1 publication Critical patent/EP0820364A1/en
Application granted granted Critical
Publication of EP0820364B1 publication Critical patent/EP0820364B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B24D3/02—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 bonding agent
    • B24D3/20—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 bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • 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
    • B24D3/02—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 bonding agent
    • B24D3/04—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 bonding agent and being essentially inorganic
    • B24D3/06—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 bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements

Definitions

  • the invention relates to a grinding tool for machining in particular brittle hard materials such as natural and artificial stone, sintered hard metal, ceramic and the like, wherein the grinding tool in one piece or preferably in several parts a supporting part and a grinding body is constructed and the grinding tool or its grinding wheel made of high-performance abrasive grain such as diamond, metallic binder, synthetic resin binder and optionally filler and wherein the metallic binder and the synthetic resin binder are each one coherent network are sintered, the metal bond network and that Resin bond network a intertwined, coherent, double spatial network permeating each other and the abrasive grain and optionally the filler is within at least one of the different binders and / or in the phase boundary between the different binders.
  • high-performance abrasive grain such as diamond, metallic binder, synthetic resin binder and optionally filler
  • the metallic binder and the synthetic resin binder are each one coherent network are sintered, the metal bond network and that Resin bond network a intertwined,
  • the invention further relates to a method for producing such Grinding wheel.
  • Grinding tools of the type mentioned can be in both wet and Dry grinding processes can be used.
  • the areas of application are Processing of natural and artificial stone, preferably with multiple parts Grinding tools in e.g. grinding and polishing lines for decorative Stone materials, in the production and repair grinding of tools for metal cutting, made entirely or partially of hardened tool steel, Tungsten carbide or ceramic exist.
  • the patent US 3650715 specifies a grinding wheel bond, the dendritic Contains metal as a filler in polyimide resin.
  • the metal lies as "clusters of dendritic metal particles ", ie as clusters of dendrites.
  • the above Patent suggests highly heat-resistant polyimide resin for use in highly stressed grinding tools, particularly those used in dry grinding in front.
  • Silver added is preferred as a filler. This suggests grinding wheels at which the soft engagement of resin-bonded grinding wheels and the Thermal conductivity and stability of metal bonds are sought.
  • a metal synthetic resin composite material from the generic grinding tools can be produced is disclosed in US 4,042,347.
  • This material is made from a continuous metal matrix and a continuous synthetic resin matrix and is produced by hot pressing a mixture of intermediate products.
  • the preliminary products for the metal matrix include an elemental metal with a melting point below 450 ° C and an intermetallic component or alloy with a Melting point above 500 ° C.
  • the continuous resin matrix is at Can be processed at temperatures above 250 ° C. in one shown in this document Exemplary embodiments are copper powder and tin powder to a sintered bronze sintered, with remnants of the copper melting only at higher temperatures remain.
  • the material disclosed in US 4,042,347 A for manufacturing of grinding tools has the disadvantage that a soft tripologically unfavorable Pure metal is provided as a high-melting component. This in turn has negative effects on the grinding properties of the fabricated from it Grinding tool.
  • the object of the invention is to provide an improved grinding wheel, which is under Use of highly heat-resistant synthetic resins and metal alloys as Binding raw materials improve the grinding properties, increase the Machining performance and economic use of the expensive contained High performance abrasive grain enables.
  • Another object of the invention is a method specify with which such grinding wheels can be produced.
  • the metallic Binder contains a copper-tin-bronze alloy in the non-sintered state.
  • the two interlinked binding networks extend over the entire grinding wheel, whereas with such tools according to the prior art Technique of the metal component of the bond as clusters of filler particles in a synthetic resin matrix is present. It was recognized that when the Sinterability of the metallic component and the synthetic resin component Binding to each other a safe education from two to completely different Networks based on substances.
  • the sinterability is included characterized by the same sintering temperature during pressure sintering for both Network raw materials. Between the webs or within the webs of any binding network Abrasive grains and possibly filler particles are embedded.
  • Training of the two networks during the pressure sintering process can both in the area of the metallic and in the area of the plastic binding part Abrasive grains enclosed and for later contact with the Workpiece to be integrated.
  • the presence of the metal bond portion in Form of an extensive metal mesh a very good support effect in the bond structure similar to the hardening effect of reinforcing steel in Concrete.
  • the synthetic resin network embedded in between is responsible for compliance and vibration damping when entering Abrasive grains in the brittle hard workpiece surface.
  • the sinterability of the metal binding component is increased adapted to that of the respective synthetic resin binding component of the binding. This is done by selecting the alloy composition of the metallic Binding component with regard to pressure softening point and liquid phase formation.
  • plastic binder is a high temperature thermoplastic and a corresponding one for the metallic network low-pressure alloy is selected, which is preferably a Bronze with a composition of 60 volume percent copper and 40 volume percent Can be tin.
  • the formation of the two inventive intertwined networks are even at the maximum Processing temperatures of the high temperature thermoplastic of 300 ° C reached.
  • Another embodiment of the invention is given when the network made of synthetic resin binders made of a cross-hardenable pressure sinterpolymer is built up from the group of polyimides.
  • the corresponding metal bond network can also be used in the invention preferably be made of bronze.
  • the associated pressure sintering temperature in this embodiment is 400 to 500 ° C, one by a sintered metal bond and build a resin-bound spatial network.
  • a further embodiment of the inventive concept is given if in Adaptation to the relatively low processing temperatures for the synthetic resin binding network low sintering alloys are used, which then usually also ductile or lubricating when grinding, as mentioned above, could be.
  • the invention has recognized that on the basis of known binders such as High temperature resins and sintered metal alloys make major improvements when building high-performance abrasive materials possible are. The improvements that can be achieved are in the manufacturing process bound. Accordingly, the invention also relates to a method for the production of a grinding wheel with process steps according to the marking of independent claim 7.
  • thermoplastic When using a high temperature thermoplastic becomes a common sintering temperature higher than 300 ° C for pressure sintering.
  • pressure sinter polymer The common pressure sintering temperature can be selected from the group of polyimides for the formation of a network of metal bonds and from Resin bond can be increased to about 500 ° C. It is essential that the pressure sinterability of the metal bond portion already at one temperature is given, which is at least 10 ° C below the respective degradation temperature of the synthetic resin bond portion.
  • the invention takes advantage of the surprising finding that the common Pressing and sintering or the common pressure sintering two binding powders, each completely different in nature, each with one Binding part in the grinding wheel leads. It is only important to introduce the Sintering temperature of the metallic binding component to the processing temperature of the synthetic resin binding component when using a high temperature thermoplastic. When using thermosetting sintered polymer must also have its special processing and curing temperature the basis for the introduction of the sintering temperature of the metallic Be a binding component. Determining the common sintering temperature is the processing temperature of the binding resin at which there is still sufficient distance from the degradation temperature of the resin. This minimum distance was around 10 ° C.
  • the Introducing the sinterability of the metallic binding component to that the synthetic resin binding component using a bronze powder modified with tin brought about. It was found that additional tin powder with a grain size of 2 to 50 my the adaptation of the sintering conditions to the requirements of plastic binding processing much easier.
  • Binding of the grinding wheel is particularly low, common Processing temperatures from 300 ° C upwards are required to ensure safe To ensure training of the metal bond network. In these cases it has been shown that, as is known per se, bismuth in the presence of copper and tin the sinterability by binding particularly low-melting ones Makes structural components sinterable.
  • the grinding fitting for a D11V9 cup wheel was manufactured for dry grinding of milling cutters equipped with P20 carbide on a Strausack tool grinding machine.
  • the amount of diamond grain was measured so that a concentration of C75 (3.3 carats per cm 3 ) was produced in the finished abrasive coating.
  • the powder resin contained 2% "75F" tin powder from Pometon / France as a flux or to adjust the sinterability of the trainees different binding networks.
  • the common pressure sintering took place in the abrasive coating form at 370 ° C. for 20 minutes in a nitrogen atmosphere at a pressure of 20,000 N cm -2 .
  • the abrasive coating was molded at 300 ° C and not subjected to post-curing.
  • a 24-station Breton machine was used to equip station No. 9 Bobble head segments made. On this grinding and polishing line in Wet sanding with water as a detergent Granite slabs with medium machinability in one pass processed.
  • a mixture of 8.5 volume percent tin powder of the type "75F” from Pometon / France with an average grain size of 30 my, 51.5 volume percent, 80/20 bronze of the type "25GR” from Poudmet / France was used to produce the abrasive coatings , with an average grain size of 50 my, 40 volume percent powder resin of the type "Vespel SP1A” from DU Pont / USA with an average grain size of 50 my and diamond abrasive grain of the type "MDAS" from De Beers / Germany with the grain size FEPA D64 (US mesh 230/270), mixed in a Turbula mixer for 20 minutes.
  • the raw materials were pre-dried and mixed without additives.
  • This abrasive coating mixture was cold pre-pressed with 2000 N cm -2 in the mold.
  • the abrasive coating mixture was then sintered in the same mold at 490 ° C and a holding time of 20 minutes in a nitrogen atmosphere at 22,000 N cm -2 .
  • the grinding surfaces were pressurelessly hardened under a nitrogen atmosphere and at temperatures of 300-400 ° C. for 16 hours.
  • the advantages of metal binding can the advantages of synthetic resin binding largely in one tool be realized. This is how the higher binding force of the metallic network occurs together with the elasticity and vibration damping effect of Resin bond at the same time.
  • the compressive stress of the invention Grinding surfaces can be increased. Through the coherent A good thermal balance of the metallic bond network takes place Grinding temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

Die Erfindung bezieht sich auf ein Schleifwerkzeug zur Bearbeitung von insbesondere sprödharten Werkstoffen wie Natur- und Kunststein, gesintertem Hartmetall, Keramik und dergleichen, wobei das Schleifwerkzeug einteilig oder vorzugsweise mehrteilig aus einem Tragteil und einem Schleifkörper aufgebaut ist und das Schleifwerkzeug beziehungsweise dessen Schleifkörper aus Hochleistungsschleifkorn wie Diamant, metallischem Bindemittel, Kunstharzbindemittel und gegebenenfalls Füllstoff hergestellt ist, und wobei das metallische Bindemittel und das Kunstharzbindemittel zu je einem zusammenhängenden Netzwerk versintert sind, das Metallbindungsnetzwerk und das Kunstharzbindungsnetzwerk ein verflochtenes, zusammenhängendes, doppeltes räumliches Netzwerk bildend einander durchdringen und das Schleifkorn und gegebenenfalls der Füllstoff sich innerhalb von mindestens einem der unterschiedlichen Bindemittel und/oder im Phasengrenzbereich zwischen den unterschiedlichen Bindemitteln befindet.The invention relates to a grinding tool for machining in particular brittle hard materials such as natural and artificial stone, sintered hard metal, ceramic and the like, wherein the grinding tool in one piece or preferably in several parts a supporting part and a grinding body is constructed and the grinding tool or its grinding wheel made of high-performance abrasive grain such as diamond, metallic binder, synthetic resin binder and optionally filler and wherein the metallic binder and the synthetic resin binder are each one coherent network are sintered, the metal bond network and that Resin bond network a intertwined, coherent, double spatial network permeating each other and the abrasive grain and optionally the filler is within at least one of the different binders and / or in the phase boundary between the different binders.

Die Erfindung bezieht sich weiters auf ein Verfahren zur Herstellung eines derartigen Schleifkörpers.The invention further relates to a method for producing such Grinding wheel.

Schleifwerkzeuge der eingangs genannten Art können sowohl im Naß- als auch im Trockenschleifverfahren verwendet werden. Die Anwendungsgebiete sind die Bearbeitung von Natur- und Kunststein, mit bevorzugt mehrteilig aufgebauten Schleifwerkzeugen in beispielsweise Schleif- und Polierstraßen für dekorative Steinwerkstoffe, beim Produktions- und Instandsetzungsschliff von Werkzeugen zur spanenden Metallbearbeitung, die ganz oder telweise aus gehärtetem Werkzeugstahl, Hartmetall oder Keramik bestehen.Grinding tools of the type mentioned can be in both wet and Dry grinding processes can be used. The areas of application are Processing of natural and artificial stone, preferably with multiple parts Grinding tools in e.g. grinding and polishing lines for decorative Stone materials, in the production and repair grinding of tools for metal cutting, made entirely or partially of hardened tool steel, Tungsten carbide or ceramic exist.

Die Patentschrift US 3650715 gibt eine Schleifscheibenbindung an, die dendritisches Metall als Füllstoff in Polyimidharz enthält. Das Metall liegt dabei als "clusters of dendritic metal particles", also als Anhäufungen von Dendriten vor. Die genannte Patentschrift schlägt hochwärmebeständiges Polyimidharz zur Verwendung in hochbeanspruchten, insbesondere im Trockenschliff eingesetzten Schleifwerkzeugen vor. Zur Ableitung der beim Schleifen entstehenden Wäre und zur zusätzlichen Stützung der Schleifkörner im Kunstharz-Bindungsverband wird bevorzugt Kufper oder Silber als Füllstoff beigemischt. Dadurch werden Schleifscheiben vorgeschlagen, bei denen der weiche Eingriff von kunstharzgebundenen Schleifkörpern und die Wärmeleitfähigkeit und Standfestigkeit von Metallbindungen angestrebt werden.The patent US 3650715 specifies a grinding wheel bond, the dendritic Contains metal as a filler in polyimide resin. The metal lies as "clusters of dendritic metal particles ", ie as clusters of dendrites. The above Patent suggests highly heat-resistant polyimide resin for use in highly stressed grinding tools, particularly those used in dry grinding in front. For the derivation of the goods generated during grinding and for additional Support of the abrasive grains in the synthetic resin bond dressing is preferred Silver added as a filler. This suggests grinding wheels at which the soft engagement of resin-bonded grinding wheels and the Thermal conductivity and stability of metal bonds are sought.

Ein Teil der am Markt erhältlichen kunstharzgebundenen Diamantschleifscheiben für hohe Wärmebeanspruchung oder für hohe Flächenpressung am Schleifbelag beruht auf der in der US 3650715 vorgeschlagenen Bindungsart.Part of the resin-bonded diamond grinding wheels available on the market for high thermal stress or for high surface pressure on the grinding surface on the type of binding proposed in US 3650715.

Ein Metallkunstharz-Verbundmaterial aus dem gattungsgemäße Schleifwerkzeuge hergestellt werden können, ist in der US 4,042,347 offenbart. Dieses Material besteht aus einer kontinuierlichen Metallmatrix und einer kontinuierlichen Kunstharzmatrix und wird durch Heißpressen einer Mischung von Vorprodukten hergestellt. Die Vorprodukte für die Metallmatrix beinhalten ein elementares Metall mit einem Schmelzpunkt unterhalb 450° C und einer intermetallischen Komponente oder Legierung mit einem Schmelzpunkt oberhalb von 500°C. Die kontinuierliche Kunstharzmatrix ist bei Temperaturen oberhalb 250°C verarbeitbar. in einem in dieser Schrift gezeigten Ausführungsbeispiel werden Kupferpulver und Zinnpulver zu einer Sinterbronze versintert, wobei Reste des erst bei höheren Temperaturen schmelzenden Kupfers bestehen bleiben. Das in der US 4,042,347 A geoffenbarte Material zur Herstellung von Schleifwerkzeugen besitzt den Nachteil, daß ein weiches tripologisch ungünstiges Reinmetall als hochschmelzende Komponente vorgesehen ist. Dies hat wiederum negative Auswirkungen auf die Schleifeigenschaften des daraus hergestellten Schleifwerkzeugs.A metal synthetic resin composite material from the generic grinding tools can be produced is disclosed in US 4,042,347. This material is made from a continuous metal matrix and a continuous synthetic resin matrix and is produced by hot pressing a mixture of intermediate products. The preliminary products for the metal matrix include an elemental metal with a melting point below 450 ° C and an intermetallic component or alloy with a Melting point above 500 ° C. The continuous resin matrix is at Can be processed at temperatures above 250 ° C. in one shown in this document Exemplary embodiments are copper powder and tin powder to a sintered bronze sintered, with remnants of the copper melting only at higher temperatures remain. The material disclosed in US 4,042,347 A for manufacturing of grinding tools has the disadvantage that a soft tripologically unfavorable Pure metal is provided as a high-melting component. This in turn has negative effects on the grinding properties of the fabricated from it Grinding tool.

Aufgabe der Erfindung ist es, einen verbesserten Schleifkörper anzugeben, der unter Verwendung von hochwärmebeständigen Kunstharzen und von Metallegierungen als Bindungsrohstoffe eine Verbesserung der Schleifeigenschaften, eine Erhöhung der Zerspanungsleistung und eine wirtschaftliche Ausnützung des enthaltenen teueren Hochleistungsschleifkorns ermöglicht. Weiters ist Aufgabe der Erfindung, ein Verfahren anzugeben, mit dem derartige Schleifkörper hergestellt werden können.The object of the invention is to provide an improved grinding wheel, which is under Use of highly heat-resistant synthetic resins and metal alloys as Binding raw materials improve the grinding properties, increase the Machining performance and economic use of the expensive contained High performance abrasive grain enables. Another object of the invention is a method specify with which such grinding wheels can be produced.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß das metallische Bindemittel im nicht gesinterten Zustand eine Kupfer-Zinn-Bronzelegierung enthält. This object is achieved according to the invention in that the metallic Binder contains a copper-tin-bronze alloy in the non-sintered state.

Die beiden miteinander verflochtenen Bindungsnetzwerke erstrecken sich dabei über den gesamten Schleifkörper, wogegen bei derartigen Werkzeugen nach dem Stand der Technik der Metallbestandteil der Bindung als Anhäufungen von Füllstoffpartikeln in einer Kunstharzmatrix vorliegt. Dabei wurde erkannt, daß bei Anpassung der Sinterfähigkeit der metallischen Komponente und der Kunstharzkomponente der Bindung aneinander eine sichere Ausbildung von zwei auf gänzlich unterschiedlichen Stoffen beruhender Netzwerke erreichbar wird. Die Sinterfähigkeit ist dabei gekennzeichnet durch gleiche Sintertemperatur bei der Drucksinterung für beide Netzwerkgrundstoffe. Zwischen den Stegen oder innerhalb der Stege eines jeden Bindungsnetzwerkes sind Schleifkörner und gegebenenfalls Füllstoffpartikel eingebettet. Während der Ausbildung der beiden Netzwerke während des Drucksinterprozesses können dabei sowohl im Bereich des metallischen, als auch im Bereich des Kunststoffbindungsteils Schleifkörner umschlossen und für den späteren Kontakt mit dem Werkstück eingebunden werden.The two interlinked binding networks extend over the entire grinding wheel, whereas with such tools according to the prior art Technique of the metal component of the bond as clusters of filler particles in a synthetic resin matrix is present. It was recognized that when the Sinterability of the metallic component and the synthetic resin component Binding to each other a safe education from two to completely different Networks based on substances. The sinterability is included characterized by the same sintering temperature during pressure sintering for both Network raw materials. Between the webs or within the webs of any binding network Abrasive grains and possibly filler particles are embedded. During the Training of the two networks during the pressure sintering process can both in the area of the metallic and in the area of the plastic binding part Abrasive grains enclosed and for later contact with the Workpiece to be integrated.

Gemäß der Erfindung wird durch das Vorliegen des Metallbindungsanteils in Form eines weitläufigen Metallgeflechtes eine sehr gute Stützwirkung im Bindungsgefüge erreicht ähnlich der Verfestigungswirkung von Armierungsstahl in Beton. Das dazwischen eingebettete Kunstharznetzwerk dagegen ist verantwortlich für die Nachgiebigkeit und Schwingungsdämpfung beim Eintritt der Schleifkömer in die sprödharte Werkstückoberfläche.According to the invention, the presence of the metal bond portion in Form of an extensive metal mesh a very good support effect in the bond structure similar to the hardening effect of reinforcing steel in Concrete. The synthetic resin network embedded in between is responsible for compliance and vibration damping when entering Abrasive grains in the brittle hard workpiece surface.

Erfindungsgemäß wird die Sinterfähigkeit der Metallbindungskomponente an jene der jeweiligen Kunstharzbindungskomponente der Bindung angepaßt. Dies geschieht durch Auswahl der Legierungszusammensetzung der metallischen Bindungskomponente hinsichtlich Druckerweichungspunkt und Flüssigphasenbildung.According to the invention, the sinterability of the metal binding component is increased adapted to that of the respective synthetic resin binding component of the binding. This is done by selecting the alloy composition of the metallic Binding component with regard to pressure softening point and liquid phase formation.

Eine Ausgestaltung der Erfindung ist gegeben, wenn das Kunststoffbindemittel ein Hochtemperatur-Thermoplast ist und für das metallische Netzwerk eine entsprechend niedrigsintemde Legierung gewählt wird, die vorzugsweise eine Bronze mit einer Zusammensetzung von 60 Volumsprozent Kupfer und 40 Volumsprozent Zinn sein kann. Die Ausbildung der beiden erfindungsgemäßen, untereinander verflochtenen Netzwerke wird dabei selbst bei den maximalen Verarbeitungstemperaturen des Hochtemperatur-Thermoplastes von 300°C erreicht.An embodiment of the invention is given when the plastic binder is a high temperature thermoplastic and a corresponding one for the metallic network low-pressure alloy is selected, which is preferably a Bronze with a composition of 60 volume percent copper and 40 volume percent Can be tin. The formation of the two inventive intertwined networks are even at the maximum Processing temperatures of the high temperature thermoplastic of 300 ° C reached.

Eine weitere Ausführungsform der Erfindung ist gegeben, wenn das Netzwerk aus Kunstharzbindemittel aus einem durch Vernetzung aushärtbaren Drucksinterpolymer aus der Gruppe der Polyimide aufgebaut ist. In dieser Ausgestaltung der Erfindung kann das entsprechende Metallbindungsnetzwerk ebenfalls vorzugsweise aus einer Bronze ausgebildet sein. Die zugehörige Drucksintertemperatur in dieser Ausführungsform beträgt 400 bis 500°C, um je ein sintermetallgebundenes und ein kunstharzgebundenes, räumliches Netzwerk aufzubauen.Another embodiment of the invention is given when the network made of synthetic resin binders made of a cross-hardenable pressure sinterpolymer is built up from the group of polyimides. In this configuration the corresponding metal bond network can also be used in the invention preferably be made of bronze. The associated pressure sintering temperature in this embodiment is 400 to 500 ° C, one by a sintered metal bond and build a resin-bound spatial network.

Die US 3650715 beispielsweise sieht "melleable metal" in Form von Füllstoffanhäufungen vor, die in der Kunstharzmatrix eingebettet sind. Durch diese Anordnung können die erfindungsgemäßen Wirkungen nicht erzielt werden. Erfindungsgemäß ist dagegen vorgesehen, daß der Metallbestandteil der Bindung als stützendes Armierungsgeflecht wirkt, wobei zusätzlich der Vorteil gewonnen wird, daß eine Bronze, vornehmlich eine Sprödbronze beim Schleifkontakt mit dem Werkstück weniger zu Zusetzungen der Schleifscheibenoberfläche bzw. der Schneidkanten der Schleifkörner neigt, als dies bei duktilem Metall leicht auftreten könnte.US 3650715, for example, sees "melleable metal" in the form of filler accumulations that are embedded in the resin matrix. By this arrangement the effects of the invention cannot be achieved. According to the invention it is provided, however, that the metal component of the bond acts as a supporting reinforcement mesh, whereby the advantage is also gained is that a bronze, especially a brittle bronze when sliding contact with the workpiece less clogging the grinding wheel surface or the cutting edges of the abrasive grains tend to be slightly more so than with ductile metal could occur.

Eine Reihe von Variationen des beschriebenen Grundgedankens der Erfindung ist neben den bevorzugten Ausführungsbeispielen möglich in Abhängigkeit der am Markt erhältlichen Rohstoffe, insbesondere in Abhängigkeit der Kunstharzeigenschaften.A number of variations on the described principle of the invention is possible in addition to the preferred embodiments depending on the Raw materials available on the market, particularly depending on the synthetic resin properties.

Eine weitere Ausgestaltung des Erfindungsgedankens ist gegeben, wenn in Anpassung an die relativ niederen Verarbeitungstemperaturen für das Kunstharzbindungsnetzwerk niedrig sintemde Legierungen genommen werden, welche dann auch meist duktil bzw. schmierend beim Schleifeinsatz, wie oben erwähnt, sein können. In diesem Fall braucht nur ein anorganischer Füllstoff wie Siliziumkarbid, Aluminiumoxid, Schwerspat, Quarz, Graphit oder dergleichen in einer vorzugsweisen Komfeinheit von kleiner als 100 my zur Förderung der Sprödigkeitseigenschaften in das Pulver für die Netzwerke eingemischt werden.A further embodiment of the inventive concept is given if in Adaptation to the relatively low processing temperatures for the synthetic resin binding network low sintering alloys are used, which then usually also ductile or lubricating when grinding, as mentioned above, could be. In this case you only need an inorganic filler like Silicon carbide, aluminum oxide, heavy spar, quartz, graphite or the like in a preference of less than 100 my to promote the Brittleness properties are mixed into the powder for the networks.

Die Erfindung hat erkannt, daß auf Basis der an sich bekannten Bindemittel wie Hochtemperaturharze und Sintermetallegierungen wesentliche Verbesserungen beim Aufbau von Hochleistungsschneidstoff enthaltenden Schleifkörpern möglich sind. Die erzielbaren Verbesserungen sind an das Herstellverfahren gebunden. Dementsprechend ist Gegenstand der Erfindung auch ein Verfahren zur Herstellung eines Schleifkörpers mit Verfahrensschritten gemäß Kennzeichnung des unabhängigen Anspruchs 7.The invention has recognized that on the basis of known binders such as High temperature resins and sintered metal alloys make major improvements when building high-performance abrasive materials possible are. The improvements that can be achieved are in the manufacturing process bound. Accordingly, the invention also relates to a method for the production of a grinding wheel with process steps according to the marking of independent claim 7.

Bei Verwendung eines Hochtemperatur-Thermoplastes wird eine gemeinsame Sintertemperatur von höher als 300°C für das Drucksintern vorgesehen. Bei Verwendung eines Drucksinterpolymers aus der Gruppe der Polyimide kann die gemeinsame Drucksintertemperatur für die Ausbildung je eines Netzwerkes aus Metallbindung und aus Kunstharzbindung auf bis etwa 500°C gesteigert werden. Wesentlich ist dabei, daß die Drucksinterfähigkeit des Metallbindungsanteils bereits bei einer Temperatur gegeben ist, welche mindestens 10°C unterhalb der jeweiligen Degradationstemperatur des Kunstharzbindungsanteils liegt.When using a high temperature thermoplastic becomes a common sintering temperature higher than 300 ° C for pressure sintering. When using a pressure sinter polymer The common pressure sintering temperature can be selected from the group of polyimides for the formation of a network of metal bonds and from Resin bond can be increased to about 500 ° C. It is essential that the pressure sinterability of the metal bond portion already at one temperature is given, which is at least 10 ° C below the respective degradation temperature of the synthetic resin bond portion.

Die Erfindung macht sich die überraschende Erkenntnis zunutze, daß das gemeinsame Verpressen und Versintern bzw. das gemeinsame Drucksinterpressen zweier in ihrer Art gänzlich unterschiedlicher Bindungspulver zu je einem Bindungsteil im Schleifkörper führt. Wichtig ist dabei nur die Heranführung der Sintertemperatur des metallischen Bindungsbestandteils an die Verarbeitungstemperatur des Kunstharz-Bindungsbestandteils bei Verwendung eines Hochtemperaturthermoplastes. Bei Verwendung von thermisch härtendem Drucksinterpolymer muß ebenfalls dessen spezielle Verarbeitungs- und Aushärtetemperatur die Grundlage für die Heranführung der Sintertemperatur des metallischen Bindungsbestandteiles sein. Bestimmend für die gemeinsame Sintertemperatur ist dabei jene Verarbeitungstemperatur des Bindungsharzes, bei welcher noch ausreichend Abstand zur Degradationstemperatur des Harzes verbleibt. Dieser Mindestabstand zeigte sich mit etwa 10°C.The invention takes advantage of the surprising finding that the common Pressing and sintering or the common pressure sintering two binding powders, each completely different in nature, each with one Binding part in the grinding wheel leads. It is only important to introduce the Sintering temperature of the metallic binding component to the processing temperature of the synthetic resin binding component when using a high temperature thermoplastic. When using thermosetting sintered polymer must also have its special processing and curing temperature the basis for the introduction of the sintering temperature of the metallic Be a binding component. Determining the common sintering temperature is the processing temperature of the binding resin at which there is still sufficient distance from the degradation temperature of the resin. This minimum distance was around 10 ° C.

In einer erfindungsgemäßen Ausgestaltung des Herstellverfahrens wird die Heranführung der Sinterfähigkeit der metallischen Bindungskomponente an jene der Kunstharzbindungskomponente durch ein mit Zinn modifiziertes Bronzepulver herbeigeführt. Dabei wurde gefunden, daß zusätzliches Zinnpulver der Korngröße von 2 bis 50 my die Anpassung der Sinterbedingungen an die Erfordernisse der Kunststoff-Bindungsverarbeitung wesentlich erleichtert.In one embodiment of the manufacturing method according to the invention, the Introducing the sinterability of the metallic binding component to that the synthetic resin binding component using a bronze powder modified with tin brought about. It was found that additional tin powder with a grain size of 2 to 50 my the adaptation of the sintering conditions to the requirements of plastic binding processing much easier.

Bei Verwendung eines Hochtemperatur-Thermoplastes als Kunstharzkomponente der Bindung des Schleifkörpers sind besonders niedrige, gemeinsame Verarbeitungstemperaturen von 300°C aufwärts erforderlich, um die sichere Ausbildung auch des Metallbindungsnetzwerkes zu gewährleisten. In diesen Fällen hat es sich gezeigt, daß wie an sich bekannt, Wismut bei Gegenwart von Kupfer und Zinn die Sinterfähigkeit durch Bindung von besonders niedrigschmelzenden Gefügebestandteilen sinterfähig macht.When using a high temperature thermoplastic as the synthetic resin component Binding of the grinding wheel is particularly low, common Processing temperatures from 300 ° C upwards are required to ensure safe To ensure training of the metal bond network. In these cases it has been shown that, as is known per se, bismuth in the presence of copper and tin the sinterability by binding particularly low-melting ones Makes structural components sinterable.

Nachfolgend werden zwei Herstellerbeispiele von erfindungsgemäßen Schleifkörpern beschrieben:Below are two examples of manufacturers of abrasive articles according to the invention described:

Beispiel IExample I

Zum Trockenschleifen von mit Hartmetall der Sorte P20 bestückten Fräsern auf einer Strausack-Werkzeugschleifmaschine wurde der Schleifbeschlag für einen D11V9-Schleiftopf hergestellt. Es wurde ein Bindungspulver mit 60 Volumsprozent 70/30 Kupfer-Zinn-Bronze vom Typ 25 GR der Firma Poudmet/Frankreich mit mittlerer Korngröße von 30 my und 40 Volumsprozent Hochtemperatur-Thermoplast vom Typ "P84HAT" der Firma HPP (vormals Firma Lenzing)/Österreich mit Diamantschleifkorn vom Typ RVG-D der Firma General Electric/USA der Korngröße FEPA D126 (für Diamant- bzw. B126 für CBN) (US mesh 120/140) in einem Turbula-Mischer gemischt. Die Menge des Diamantkorns wurde so bemessen, daß im fertigen Schleifbelag eine Konzentration von C75 (3,3 Karat pro cm3) entstand.The grinding fitting for a D11V9 cup wheel was manufactured for dry grinding of milling cutters equipped with P20 carbide on a Strausack tool grinding machine. A binding powder with 60 volume percent 70/30 copper-tin-bronze type 25 GR from Poudmet / France with average grain size of 30 my and 40 volume percent high-temperature thermoplastic type "P84HAT" from HPP (formerly Lenzing) / Austria mixed with diamond abrasive grain type RVG-D from General Electric / USA with grain size FEPA D126 (for diamond or B126 for CBN) (US mesh 120/140) in a Turbula mixer. The amount of diamond grain was measured so that a concentration of C75 (3.3 carats per cm 3 ) was produced in the finished abrasive coating.

Das Pulverharz enthielt 2 % Zinnpulver vom Typ "75F" der Firma Pometon/Frankreich als Flußmittel bzw. zur Angleichung der Sinterfähigkeit der auszubildenden unterschiedlichen Bindungsnetzwerke.The powder resin contained 2% "75F" tin powder from Pometon / France as a flux or to adjust the sinterability of the trainees different binding networks.

Alle Ausgangsstoffe wurden getrocknet. All starting materials were dried.

Das gemeinsame Drucksintern erfolgte in der Schleifbelagsform bei 370°C während 20 Minuten in Stickstoffatmosphäre bei einem Druck von 20.000 N cm-2.
Der Schleifbelag wurde bei 300°C ausgeformt und keiner Nachhärtung unterzogen.The common pressure sintering took place in the abrasive coating form at 370 ° C. for 20 minutes in a nitrogen atmosphere at a pressure of 20,000 N cm -2 .
The abrasive coating was molded at 300 ° C and not subjected to post-curing.

Beispiel IIExample II

Zur Bestückung der Station Nr. 9 einer 24-Stationen Breton-Maschine wurden Wackelkopfsegmente hergestellt. Auf dieser Schleif- und Polierstraße wurden im Naßschliff mit Wasser als Spülmittel Granitplatten mittlerer Spanbarkeit im Durchlauf bearbeitet.A 24-station Breton machine was used to equip station No. 9 Bobble head segments made. On this grinding and polishing line in Wet sanding with water as a detergent Granite slabs with medium machinability in one pass processed.

Zur Herstellung der Schleifbeläge wurde eine Mischung aus 8,5 Volumsprozent Zinnpulver vom Typ "75F" der Firma Pometon/Frankreich mit mittlerer Korngröße von 30 my, 51,5 Volumsprozent, 80/20-Bronze vom Typ "25GR" von Firma Poudmet/Frankreich, mit mittlerer Korngröße von 50 my, 40 Volumsprozent Pulverharz vom Typ "Vespel SP1A" der Firma DU Pont/USA mit mittlerer Korngröße von 50 my und Diamantschleifkorn vom Typ "MDAS" der Firma De Beers/Deutschland mit der Korngröße FEPA D64 (US-mesh 230/270), 20 Minuten in einem Turbula-Mischer gemischt. Die Ausgangsstoffe wurden vorgetrocknet und ohne Zusätze gemischt. Der Diamantgehalt für den fertigen Schleifbelag war mit einer Konzentration von C18 (= 0,79 Karat/cm2) vorgesehen.A mixture of 8.5 volume percent tin powder of the type "75F" from Pometon / France with an average grain size of 30 my, 51.5 volume percent, 80/20 bronze of the type "25GR" from Poudmet / France was used to produce the abrasive coatings , with an average grain size of 50 my, 40 volume percent powder resin of the type "Vespel SP1A" from DU Pont / USA with an average grain size of 50 my and diamond abrasive grain of the type "MDAS" from De Beers / Germany with the grain size FEPA D64 (US mesh 230/270), mixed in a Turbula mixer for 20 minutes. The raw materials were pre-dried and mixed without additives. The diamond content for the finished abrasive coating was intended to be C18 (= 0.79 carat / cm 2 ).

Diese Schleifbelagsmischung wurde mit 2000 N cm-2 in der Preßform kalt vorgepreßt. Die Schleifbelagsmischung wurde anschließend in derselben Preßform bei 490°C und einer Haltezeit von 20 Minuten in Stickstoffatmosphäre bei 22.000 N cm-2 gesintert. Nach dem Drucksintern erfolgte eine drucklose Nachhärtung der Schleifbeläge unter Stickstoffatmosphäre und Temperaturen von 300-400°C während 16 Stunden.This abrasive coating mixture was cold pre-pressed with 2000 N cm -2 in the mold. The abrasive coating mixture was then sintered in the same mold at 490 ° C and a holding time of 20 minutes in a nitrogen atmosphere at 22,000 N cm -2 . After the pressure sintering, the grinding surfaces were pressurelessly hardened under a nitrogen atmosphere and at temperatures of 300-400 ° C. for 16 hours.

Mit Schleifwerkzeugen nach der Erfindung können die Vorteile der Metallbindung mit den Vorteilen der Kunstharzbindung weitgehend in einem Werkzeug verwirklicht werden. So tritt die höhere Bindekraft des metallischen Netzwerkes gemeinsam mit der Elastizität und schwingungsdämpfenden Wirkung der Kunstharzbindung gleichzeitig auf. Die Druckbeanspruchung von erfindungsgemäßen Schleifbelägen kann gesteigert werden. Durch das zusammenhängende metallische Bindungsnetzwerk erfolgt ein guter thermischer Ausgleich der Schleiftemperatur.With grinding tools according to the invention, the advantages of metal binding can the advantages of synthetic resin binding largely in one tool be realized. This is how the higher binding force of the metallic network occurs together with the elasticity and vibration damping effect of Resin bond at the same time. The compressive stress of the invention Grinding surfaces can be increased. Through the coherent A good thermal balance of the metallic bond network takes place Grinding temperature.

Claims (10)

  1. A grinding tool for machining of particularly brittle materials such as natural and artificial stone, sintered tungsten carbide, ceramics and similar, wherein the grinding tool is composed of one piece or preferably several pieces, namely a core and an abrasive rim, and the grinding tool or rather its abrasive rim is manufactured out of super abrasive such as diamond, metallic bonding agent, resinoid bonding agent and optionally a filler, and wherein the metallic bonding agent and the resinoid bonding agent are each sintered to form a connected network, and the metal bond network and the resinoid bond network form an intertwining, connected, double spatial network penetrating each other, and further wherein said abrasive and optionally the filler are located within at least one of the different bonding agents and/or in the interface area between the different bonding agents, characterised in that the metallic bonding agent contains in the unsintered state a copper-tin-bronze-alloy.
  2. A grinding tool according to claim 1 characterised in that the resinoid bond network consists of a resin from the high temperature thermoplast group such as polyamideimides, polyetheretherketones, polyarylsulfones, liquid crystal polymer, polyphenylene sulfides, silicon resins and polyimides.
  3. A grinding tool according to claim 1 or 2 characterised in that the metal bond network consists of a bronze with 50 to 98 weight percent copper and 50 to 2 weight percent tin.
  4. A grinding tool according to claim 1 or 2 characterised in that the metal bond network consists of brittle bronze with 38 to 64 weight percent copper and 36 to 62 weight percent tin.
  5. A grinding tool according to any one of claims 1 to 4 characterised in that the metal bond network contains an inorganic filler from the carbide group, oxide or similar for increasing the brittle fracture tendency with a grit size of preferably 100 microns maximum.
  6. A grinding tool according to any one of claims 1 to 5 characterised in that the volume share of the metal bond network in the abrasive rim to the volume share of the resinoid bond network is in a range from 20:80 up to 80:20, preferably 30:70.
  7. Process for the production of a super abrasive and optionally a filler in an abrasive rim of a grinding tool containing a bond according to claim 1, comprising the steps of:
    A) dry mixing of at least one metallic bond powder containing a copper-tin-bronze alloy, and at least one resinoid bond powder with the same sintering capability, and optionally a filler to form a mixed bond powder;
    B) cold prepressing of the bond powder after addition of the abrasive at room temperature, preferably without moistening agent to a green compact;
    C) joint pressure sintering of the metallic bonding agent and the resinoid bonding agent of the green compact at a sintering temperature at least 10° C. below the degradation temperature of the resinoid bonding agent;
    D) sintering of the resinoid bonding agent and the metallic bonding agent each to a connected, intertwined with each other spatial network, wherein the abrasive grains and optionally the filler particles present are bonded within at least one of the networks but preferably within both networks and/or in the interphase area between both networks.
  8. Process according to claim 7 characterised by joint pressure sintering of a high temperature thermoplast from the group of polyamideimides, polyetheretherketones, polyarylsulfones, liquid crystal polymer, polyphenylene sulfides, silicon resins, polyimides, and the powder of a metallic bond powder containing a copper-tin-bronze-alloy in a temperature range starting at 300° C. and ending 10° C. below the degradation temperature of the high temperature thermoplast used and at a pressure of 5000 to 30,000 Newton per square centimeter (N cm-2).
  9. Process according to claim 7 characterised by joint pressure sintering of a crosslinking pressure sintered polymer from the polyimides group and the powder of a copper-tin-bronze-alloy in a temperature range starting at 400° C. and ending 10° C below the degradation temperature of the pressure sintered polymer used and at a pressure of 5000 to 30,000 Newton per square centimeter (N cm-2).
  10. Process according to claim 9 characterised by chemical thermosetting of the polyimide network formed by joint pressure sintering at temperatures up to 400 ° C. and a duration of up to 24 hours in a unpressurized sintering mould.
EP97901222A 1996-02-14 1997-02-07 Grinding tool with a metal-synthetic resin binder and method of producing the same Expired - Lifetime EP0820364B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT0025396A AT403671B (en) 1996-02-14 1996-02-14 GRINDING TOOL WITH A METAL RESIN BINDING AGENT AND METHOD FOR THE PRODUCTION THEREOF
AT25396 1996-02-14
AT253/96 1996-02-14
PCT/IB1997/000099 WO1997029886A1 (en) 1996-02-14 1997-02-07 Grinding tool with a metal-synthetic resin binder and method of producing the same

Publications (2)

Publication Number Publication Date
EP0820364A1 EP0820364A1 (en) 1998-01-28
EP0820364B1 true EP0820364B1 (en) 2002-12-18

Family

ID=3485626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97901222A Expired - Lifetime EP0820364B1 (en) 1996-02-14 1997-02-07 Grinding tool with a metal-synthetic resin binder and method of producing the same

Country Status (6)

Country Link
US (1) US6063148A (en)
EP (1) EP0820364B1 (en)
AT (1) AT403671B (en)
BR (1) BR9702077A (en)
DE (1) DE59708987D1 (en)
WO (1) WO1997029886A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010020601A1 (en) * 2010-05-14 2011-11-17 Saint-Gobain Diamantwerkzeuge Gmbh & Co. Kg grinding wheel

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT403671B (en) * 1996-02-14 1998-04-27 Swarovski Tyrolit Schleif GRINDING TOOL WITH A METAL RESIN BINDING AGENT AND METHOD FOR THE PRODUCTION THEREOF
US6375692B1 (en) 1999-07-29 2002-04-23 Saint-Gobain Abrasives Technology Company Method for making microabrasive tools
KR100431583B1 (en) * 2001-12-28 2004-05-17 이화다이아몬드공업 주식회사 Bonding Composition for Cutting Tip and Cutting Tip and Cutting Wheel Using the Composition
JP2004090159A (en) * 2002-08-30 2004-03-25 Ube Ind Ltd Heat-resistant resin bond grinding wheel and manufacturing method for it
DE102004035088A1 (en) * 2004-07-20 2006-02-16 Chemetall Ges.Mbh Organically bound release or abrasive particles with a functional additive
US8894731B2 (en) * 2007-10-01 2014-11-25 Saint-Gobain Abrasives, Inc. Abrasive processing of hard and /or brittle materials
KR101267461B1 (en) * 2007-12-12 2013-05-31 생-고벵 아브라시프 Multifunction abrasive tool with hybrid bond
CN102076462B (en) * 2008-07-02 2013-01-16 圣戈班磨料磨具有限公司 Abrasive slicing tool for electronics industry
JP5701499B2 (en) * 2009-12-03 2015-04-15 Ntn株式会社 Seal surface processing method
TWI454342B (en) 2010-08-16 2014-10-01 Saint Gobain Abrasives Inc Abrasive article for use in grinding of superabrasive workpieces
TWI544064B (en) 2010-09-03 2016-08-01 聖高拜磨料有限公司 Bonded abrasive article and method of forming
SE537723C2 (en) * 2011-07-22 2015-10-06 Slipnaxos Ab A grinding tool for machining brittle materials and a process for making a grinding tool
US9102039B2 (en) 2012-12-31 2015-08-11 Saint-Gobain Abrasives, Inc. Bonded abrasive article and method of grinding
EP2938460B1 (en) 2012-12-31 2018-08-15 Saint-Gobain Abrasives, Inc. Method of grinding
CN104994996B (en) 2012-12-31 2017-12-05 圣戈班磨料磨具有限公司 Bonded abrasive articles and method for grinding
WO2014165447A1 (en) 2013-03-31 2014-10-09 Saint-Gobain Abrasives, Inc. Bonded abrasive article and method of grinding
CN103240682A (en) * 2013-05-02 2013-08-14 广东奔朗新材料股份有限公司 Abrasion-resistant composite diamond abrasive tool
JP2019171520A (en) * 2018-03-28 2019-10-10 株式会社ノリタケカンパニーリミテド Resinoid grinding wheel

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3650715A (en) * 1969-04-04 1972-03-21 Du Pont Abrasive compositions
US4042347A (en) * 1974-04-15 1977-08-16 Norton Company Method of making a resin-metal composite grinding wheel
US4369046A (en) * 1979-06-15 1983-01-18 Abrasives International N.V. Process for making an abrasive grinding wheel
JPS6228176A (en) * 1985-07-31 1987-02-06 Mitsubishi Metal Corp Diamond grindstone
JPS63221976A (en) * 1987-03-11 1988-09-14 Inoue Japax Res Inc Grinding tool
JPS6464766A (en) * 1987-09-01 1989-03-10 Tadatomo Suga Machining method for specular surface of hard and brittle material and grinding wheel member used therefor
GB9020462D0 (en) * 1990-09-19 1990-10-31 Filters For Industry Ltd Abrasive segments
JP2680739B2 (en) * 1991-02-20 1997-11-19 三菱重工業株式会社 Resin bond super abrasive whetstone
JP3006933B2 (en) * 1991-06-18 2000-02-07 株式会社東京ダイヤモンド工具製作所 Super abrasive grinding wheel
JP2820246B2 (en) * 1991-07-12 1998-11-05 新東工業株式会社 Manufacturing method of super abrasive wheel
AT403671B (en) * 1996-02-14 1998-04-27 Swarovski Tyrolit Schleif GRINDING TOOL WITH A METAL RESIN BINDING AGENT AND METHOD FOR THE PRODUCTION THEREOF

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010020601A1 (en) * 2010-05-14 2011-11-17 Saint-Gobain Diamantwerkzeuge Gmbh & Co. Kg grinding wheel
DE102010020601B4 (en) * 2010-05-14 2013-01-24 Saint-Gobain Diamantwerkzeuge Gmbh & Co. Kg grinding wheel

Also Published As

Publication number Publication date
ATA25396A (en) 1997-09-15
DE59708987D1 (en) 2003-01-30
WO1997029886A1 (en) 1997-08-21
EP0820364A1 (en) 1998-01-28
US6063148A (en) 2000-05-16
BR9702077A (en) 1998-05-26
AT403671B (en) 1998-04-27

Similar Documents

Publication Publication Date Title
EP0820364B1 (en) Grinding tool with a metal-synthetic resin binder and method of producing the same
AT515258B1 (en) Process for producing abrasive bodies
DE69712075T2 (en) PRODUCTION OF A METAL BOND GRINDING BODY
DE69901438T4 (en) GRINDING TOOLS
DE112005001119B4 (en) Truing blade for machining abrasive tools and method for making a truing blade
DE3316650C2 (en)
DE69914961T2 (en) grinding tool
DE69301512T2 (en) Abrasives
DE1243079B (en) Method of making an abrasive
DE2536090A1 (en) ABRASIVE BODIES AND METHOD FOR ITS MANUFACTURING
CH638473A5 (en) METHOD FOR PRODUCING DIAMOND GRINDING BODIES.
DE1652915A1 (en) Method of manufacturing abrasive tool with composite metal
CH675386A5 (en)
DE19635633A1 (en) Composite cutting bodies containing diamond particles and process for their production
DE69502217T2 (en) Porous metal bond grinder and process for its manufacture
AT400543B (en) METAL BONDED ABRASIVE TOOL WITH FILLER
EP0486421B1 (en) Method of manufacturing a metallic material and material obtained by this method
DE4300417C2 (en) Rotating or oscillating grinding tool with a base body, which is made up of spatially arranged and interconnected webs, and manufacturing method for such a grinding tool
DE112004001097T5 (en) Resin bond diamond tool and method of making same
EP3590658B1 (en) Method for producing thin grinding bodies
DE1950880A1 (en) Process for the production of grinding tools with diamond grinding bodies
DE10221483C1 (en) Process for the production of free sintered annular grinding pads for grinding wheels
DE3404871A1 (en) GRINDING, HONING OR GRINDING BODY
WO2003047822A2 (en) Cutting or grinding or drilling tool having low-height cutting or grinding layers, and method for producing a such a tool
EP1019220A1 (en) Abrasive tool

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19970910

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE DK ES FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 20010405

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE DK ES FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20021218

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59708987

Country of ref document: DE

Date of ref document: 20030130

Kind code of ref document: P

Ref document number: 59708987

Country of ref document: DE

Date of ref document: 20030130

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030318

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030422

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030627

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030919

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040302

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050207

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20050218

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20050221

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050228

Year of fee payment: 9

Ref country code: BE

Payment date: 20050228

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050330

Year of fee payment: 9

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060208

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060228

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060901

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20061031

BERE Be: lapsed

Owner name: TYROLIT SCHLEIFMITTELWERKE *SWAROVSKI K.G.

Effective date: 20060228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070207