EP2391482A1 - Grinding disk having plant seed capsules as a filler and method for the production thereof - Google Patents

Grinding disk having plant seed capsules as a filler and method for the production thereof

Info

Publication number
EP2391482A1
EP2391482A1 EP10701675A EP10701675A EP2391482A1 EP 2391482 A1 EP2391482 A1 EP 2391482A1 EP 10701675 A EP10701675 A EP 10701675A EP 10701675 A EP10701675 A EP 10701675A EP 2391482 A1 EP2391482 A1 EP 2391482A1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
plant seeds
mixture
seeds
abrasive grain
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.)
Granted
Application number
EP10701675A
Other languages
German (de)
French (fr)
Other versions
EP2391482B1 (en
Inventor
Josef Keuler
Christian Stang
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.)
Rhodius Schleifwerkzeuge GmbH and Co KG
Original Assignee
Rhodius Schleifwerkzeuge GmbH and Co 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 Rhodius Schleifwerkzeuge GmbH and Co KG filed Critical Rhodius Schleifwerkzeuge GmbH and Co KG
Priority to PL10701675T priority Critical patent/PL2391482T3/en
Publication of EP2391482A1 publication Critical patent/EP2391482A1/en
Application granted granted Critical
Publication of EP2391482B1 publication Critical patent/EP2391482B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B24D3/34—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
    • B24D3/342—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 incorporated in the bonding agent
    • 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
    • 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
    • B24D3/32—Resins or natural or synthetic macromolecular compounds for porous or cellular structure
    • 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
    • B24D3/348—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 utilised as impregnating agent for porous abrasive bodies

Definitions

  • the present invention relates to a resin-bonded
  • Abrasive wheel in which vegetable seed capsules are used as pore formers, and a method for producing such grinding wheels.
  • a grinding wheel consists essentially of abrasive grain
  • Binder material and pore space is composed of the natural interstices that arise between the abrasive grains and the pores introduced into the grinding wheel by pore formers.
  • the pores are also influenced in size and number by the pressing pressure. This results in a low pore space at high pressure, while a low pressure results in a correspondingly larger pore space.
  • a low compression pressure also requires a softer disc.
  • other fillers in grinding wheels can also be used. These may be abrasive (e.g., cooling), thus assisting the grinding process or serving to stabilize (burst resistance, flexibility) the grinding wheel.
  • Roughness of the material surface depends essentially on the size of the abrasive grain.
  • Abrasive grains usually consist of hard, brittle materials and are routinely used in a wide range of sizes.
  • the binder material may be a synthetic resin as in the present application. It serves to hold the individual abrasive grains together. The pore space makes it possible, among other things, to remove the material chip safely, but it can also be used to hold coolant. By varying the volume ratio of the individual components to each other, the properties of the grinding wheel can be adjusted, so that one can achieve the desired grinding results for each material to be processed. State of the art
  • Organic pore formers are previously used only in ceramic bonded grinding wheels.
  • a ceramic bonded grinding wheel which can be produced in a single firing process and thereby manages without the use of a binder.
  • Walnut shells, plastic beads or foamed organic material are used as pore formers.
  • the starting material used is a sol-gel based on boehmite seed crystals, which is mixed with walnut shells with an average size of 275 ⁇ m. Subsequently, this mixture is poured into the desired shape, dried and finally fired at a maximum temperature of 1300 ° C.
  • the boehmite crystallizes to ⁇ -alumina.
  • the walnut shells burn without residue at these high temperatures and therefore leave pores in the grinding wheel.
  • the final product has a porosity of about 40% and is sufficiently stable to be used as a grinding wheel.
  • US 5,203,886 A describes a grinding wheel which consists of a combination of pore formers, namely hollow aluminum oxide beads and organic pore-forming agent, and a sol-gel of aluminum oxide abrasive grains.
  • the organic pore former may be made from nutshells, carbon, flower seeds, starch, sugar or wood particles.
  • the organic pore-forming agent completely decomposes on firing of the grinding wheel, leaving open pores in the grinding wheel.
  • the resulting achieved porosity of the grinding wheel is about 1 to 12% of its volume.
  • the temperature-resistant, hollow, thin-walled aluminum oxide beads give the grinding wheel, as closed pores, additional porosity of up to 70% while at the same time ensuring sufficient stability.
  • Pore formers are a variety of substances, such as wood, hemp, flax, paper and grains called various types. However, these pore formers burn in the process described during the firing process.
  • the stoneware produced by this process is suitable, inter alia, for use as artificial millstones in grain mills.
  • the abrasive article comprises a binder (phenolic resins, epoxy resins, imides), abrasive grain and at least one functional filler.
  • the functional filler here is a metal alloy, which can be selected depending on the material to be processed. In the production, a firing temperature in the range of 15O 0 C to 25O 0 C is applied, and the curing process takes a total of 12 to 76 hours.
  • the binders used include phenolic resins and epoxy resins.
  • the abrasive grain used has diameters of about 1 ⁇ m to about 10 mm. The curing of these grinding wheels takes place over a period of 8 to 15 hours at temperatures of 66 to 12O 0 C.
  • DE 102 97 124 T5 describes a method for producing a glazed tool with superabrasive, in which a fritted glass bonding composition is selected Superabrasive component, a filler component with hollow bodies and the glass bonding composition are combined, and the combined components are fired at about 600 to 85O 0 C.
  • Object of the present invention is resin-bonded
  • this object is achieved in that the plant seeds are included in the finished grinding wheel.
  • the grinding wheel consists of a mixture of abrasive grain
  • Binders and pore formers wherein the pore formers are plant seeds, and the plant seeds are not burned in the production, but are included in the finished grinding wheel.
  • the plant seeds are used in the manufacture of the grinding wheel as organic pore-forming agent.
  • the plant seeds are not - as in the production of ceramic bonded grinding wheels usual - burned during manufacture, but remain intact and form an important part of the finished grinding wheel.
  • the plant seeds are doing several functions. They have as part of the grinding wheel a certain support effect, which prevents the early breaking out of the abrasive grain.
  • the plant seeds can also fulfill the task of conventional pores and provide, for example, for the removal of the grinding chips. Since the plant seeds are relatively soft, they can be deformed by the usually harder grinding chips, and then transport them away in the newly formed pore space. It is also possible that the hot grinding chips, which have temperatures of between 1500 ° C and 2000 ° C, the plant seeds Burn grinding process. The resulting pore space is then comparable to that of a conventional pore and can accordingly serve for the removal of the sanding chip. In addition, when grinding non-ferrous metals by the addition of pore formers in the form of plant seeds, the clogging of the disc can be prevented.
  • Plant seeds come in a variety of shapes and sizes, so that the porosity of the grinding tool can be adjusted almost arbitrarily. This is particularly important because the size of the resulting chip may vary depending on the size of the abrasive grain and the nature of the workpiece.
  • the resin-bonded grinding wheel of the present invention consists of 60 to 90 wt .-% of abrasive grain and 10 to 40 wt .-% of binder.
  • the plant seeds can make up to 80% by weight of the binder.
  • various other known fillers can be used.
  • abrasive grain are essentially all commonly used as abrasive grain materials. These include corundum, silicon carbides, chromium oxides, cubic boron nitride, diamonds, silicon oxides, zirconium oxides, garnet and emery, and mixtures thereof.
  • the abrasive grains may have different sizes in the range of 0.5 ⁇ m to 5000 ⁇ m. The size and the material of the abrasive grains can be selected depending on the workpiece to be machined.
  • the abrasive grain has a particle size of 105 microns to 2830 microns, more preferably from 250 microns to 2830 microns.
  • oily seeds such as rapeseed
  • the oil contained in the plant seeds causes a lubricating effect, ie the oil reduces the friction of the abrasive grain during chip formation and thus reduces the heat development during grinding.
  • the oil increases the service life of the grinding wheel and on the other hand the workpiece before protected against undesired hardening.
  • clover In addition to oil-containing plant seeds and poppy seed, clover, lupine, mustard, Seradella or Wickensamen or similar plant seeds can be used.
  • the binder is a mixture of a synthetically prepared polymeric compound and fillers.
  • the polymeric compound may be synthetic resin, which may be used both in liquid form and in powder form. Suitable resins are, for example, polyimides, phenolic resins, epoxy resins, unsaturated polyesters, and the like.
  • the invention also relates to a method for producing the grinding wheels according to the invention.
  • a free-flowing mixture of abrasive grain, binder and plant seeds is produced. This mixture is poured evenly into a preformed mold and then pressed to a predetermined volume. The press is then subjected to a curing program in an oven, where it is exposed to temperatures of up to 250 ° C. The pressing and curing of the grinding wheel can also be done in one step.
  • the grinding wheel mixture is filled with extremely uniform distribution in a mold.
  • the pressing in a conventional press, for example a hydraulic press, under pressing pressures of 15 to 45 N / mm 2 , preferably 20 to 35 N / mm 2 used, more preferably pressed from 30 N / mm 2 to form a green compact.
  • the pressing time may be in the range of 1 to 100 seconds, preferably 5 to 50 seconds.
  • additional reinforcements eg glass fabric
  • the pressing operation is carried out at room temperature.
  • the green compact is then cured at elevated temperature.
  • Curing process takes place in chamber or tunnel ovens.
  • the temperature can be controlled automatically by the program controller.
  • the selection of a suitable curing program depends on one A number of factors, such as the dimensions and structure of the disc, the proportion of filler, the resin bond fraction and the
  • Resin properties The temperature at which curing occurs, we selected so that the plant seeds present in the green plant do not burn.
  • the pellets are first pre-dried at temperatures between 50 ° C and 100 ° C and then at
  • the curing process lasts between 5 and 40 hours, preferably between 10 and 30 hours and more preferably 15
  • the formulation is composed as follows: [0031]
  • the mixing process is continued until the desired homogeneous consistency is reached.
  • the grinding wheel mixture should not be too dry but dust-free and free-flowing. After its completion will be the mixture sieved and deposited for several hours.
  • the press mixture After deposition, the press mixture is accurately weighed and transported by means of sliders in the mold. The mixture is filled into the mold with extremely even distribution. Subsequently, the pressing is pressed cold in a conventional press, under a pressure of 30 N / mm 2 within a few seconds to a green compact. In order to increase the structural integrity of the grinding wheel while three tissues are mitverpresst.
  • the green compact produced is clamped between metal discs and fired over a multi-stage curing profile up to a temperature of 180 ° C for a total of 15 hours. After firing, the finished grinding wheel is removed between the metal plates.
  • the finished disc has the dimensions 125 x 7 x 22.23 mm and has a pleasantly cool cut.

Abstract

The invention relates to a synthetic-resin-bonded grinding disk comprising a mixture of abrasive grain, binding agent, and pore formers, wherein the pore formers are plant seeds and are contained in the finished grinding disk. The grinding disk is composed of 60 to 90 wt % of abrasive grain and 10 to 40 wt % of a binding agent, wherein the plant seeds constitute up to 80 wt % of the binding agent. The plant seeds can contain oil and can be rape seeds, poppy seeds, clover seed, lupin seeds, mustard seeds, serradella vetch seeds, or similar plant seeds. The grinding disk can be produced by mixing abrasive grain, binding agent, and plant seeds, pouring the starting mixture into a mold provided therefor, pressing the mixture, pre-drying the mixture, and curing the grinding disk. The plant seeds are not burned in the production of the grinding disk. The grinding disk is cured at temperatures of up to 250°C, preferably of up to 200°C, more preferably of up to 180°C, and more preferably of up to 150°C.

Description

Beschreibung SCHLEIFSCHEIBE MIT PFLANZLICHEN SAMENKAPSELN ALS FÜLLSTOFF Description GRINDING DISK WITH VEGETABLE SEED CAPSULES AS A FILLER
UND VERFAHREN ZU DESSEN HERSTELLUNG Technisches GebietAND METHOD FOR THE PRODUCTION THEREOF Technical field
[0001] Die vorliegende Erfindung betrifft eine kunstharzgebundeneThe present invention relates to a resin-bonded
Schleifscheibe, bei der pflanzliche Samenkapseln als Porenbildner verwendet werden, sowie ein Verfahren zur Herstellung solcher Schleifscheiben.Abrasive wheel, in which vegetable seed capsules are used as pore formers, and a method for producing such grinding wheels.
[0002] Eine Schleifscheibe besteht im Wesentlichen aus Schleifkorn,A grinding wheel consists essentially of abrasive grain,
Bindermaterial und Porenraum. Der Porenraum setzt sich aus den natürlichen Zwischenräumen, die sich zwischen den Schleifkörnern ergeben, sowie den durch Porenbildner in die Schleifscheibe eingebrachten Poren zusammen. Zusätzlich zur Rezeptur werden die Poren in Größe und Anzahl auch durch den Pressdruck beeinflusst. So entsteht bei hohem Druck ein geringer Porenraum, während ein niedriger Druck einen entsprechend größeren Porenraum zur Folge hat. Ein niedriger Pressdruck bedingt allerdings auch eine weichere Scheibe. Neben Porenbildnern können auch noch weitere Füllstoffe in Schleifscheiben verwendet werden. Diese können schleifaktiv sein (z.B. Kühlung) und damit den Schleifprozess unterstützen oder der Stabilisierung (Berstfestigkeit, Flexibilität) der Schleifscheibe dienen.Binder material and pore space. The pore space is composed of the natural interstices that arise between the abrasive grains and the pores introduced into the grinding wheel by pore formers. In addition to the recipe, the pores are also influenced in size and number by the pressing pressure. This results in a low pore space at high pressure, while a low pressure results in a correspondingly larger pore space. However, a low compression pressure also requires a softer disc. In addition to pore-forming agents, other fillers in grinding wheels can also be used. These may be abrasive (e.g., cooling), thus assisting the grinding process or serving to stabilize (burst resistance, flexibility) the grinding wheel.
[0003] Die Feinheit des sich beim Schleifprozess bildenden Spans bzw. dieThe fineness of the forming during the grinding process chip or the
Rauhigkeit der Werkstoffoberfläche hängt im Wesentlichen von der Größe des Schleifkorns ab. Schleifkörner bestehen meist aus harten, spröden Materialien und werden routinemäßig in einem weiten Größenbereich eingesetzt. Das Bindermaterial kann wie in der vorliegenden Anmeldung ein Kunstharz sein. Es dient dazu die einzelnen Schleifkörner zusammenzuhalten. Der Porenraum ermöglicht es unter anderem, den Werkstoffspan sicher abzutransportieren, kann aber auch dazu genutzt werden, Kühlmittel aufzunehmen. Durch Variation des Volumenverhältnisses der einzelnen Komponenten zueinander lassen sich die Eigenschaften der Schleifscheibe einstellen, so dass man für jedes zu bearbeitende Material die gewünschten Schleifergebnisse erzielen kann. Stand der TechnikRoughness of the material surface depends essentially on the size of the abrasive grain. Abrasive grains usually consist of hard, brittle materials and are routinely used in a wide range of sizes. The binder material may be a synthetic resin as in the present application. It serves to hold the individual abrasive grains together. The pore space makes it possible, among other things, to remove the material chip safely, but it can also be used to hold coolant. By varying the volume ratio of the individual components to each other, the properties of the grinding wheel can be adjusted, so that one can achieve the desired grinding results for each material to be processed. State of the art
[0004] Organische Porenbildner werden bisher nur in keramisch gebundenen Schleifscheiben eingesetzt.Organic pore formers are previously used only in ceramic bonded grinding wheels.
[0005] In der US 5,221 ,294 A ist eine keramisch gebundene Schleifscheibe beschrieben, welche in einem einzigen Brennvorgang hergestellt werden kann und dabei ohne die Verwendung eines Bindemittels auskommt. Als Porenbildner werden unter anderem Walnussschalen, Kunststoffkügelchen oder geschäumtes organisches Material verwendet. Als Ausgangsprodukt dient ein SoI-GeI auf Basis von Böhmit-Kristallkeimen, welches mit Walnussschalen einer durchschnittlichen Größe von 275 μm vermischt wird. Anschließend wird diese Mischung in die gewünschte Form gegossen, getrocknet und schließlich bei einer maximalen Temperatur von 1300 °C gebrannt. Dabei kristallisiert das Böhmit zu α-Aluminiumoxid. Die Walnussschalen verbrennen bei diesen hohen Temperaturen rückstandslos und hinterlassen daher Poren in der Schleifscheibe. Das Endprodukt besitzt eine Porosität von etwa 40 % und ist ausreichend stabil, um als Schleifscheibe eingesetzt zu werden.In US 5,221,294 A a ceramic bonded grinding wheel is described, which can be produced in a single firing process and thereby manages without the use of a binder. Walnut shells, plastic beads or foamed organic material are used as pore formers. The starting material used is a sol-gel based on boehmite seed crystals, which is mixed with walnut shells with an average size of 275 μm. Subsequently, this mixture is poured into the desired shape, dried and finally fired at a maximum temperature of 1300 ° C. The boehmite crystallizes to α-alumina. The walnut shells burn without residue at these high temperatures and therefore leave pores in the grinding wheel. The final product has a porosity of about 40% and is sufficiently stable to be used as a grinding wheel.
[0006] In der US 5,203,886 A wird eine Schleifscheibe beschrieben, die aus einer Kombination von Porenbildnern, nämlich hohlen Aluminiumoxidkügelchen und organischem Porenbildner, sowie einem SoI-GeI aus Aluminiumoxid-Schleifkörnern besteht. Der organische Porenbildner kann aus Nussschalen, Kohlenstoff, Blumensamen, Stärke, Zucker oder Holzteilchen hergestellt sein. Der organische Porenbildner zersetzt sich beim Brennen der Schleifscheibe komplett und hinterlässt dabei offene Poren in der Schleifscheibe. Die dadurch erreichte Porosität der Schleifscheibe beträgt etwa 1 bis 12 % ihres Volumens. Die temperaturbeständigen, hohlen, dünnwandigen Aluminiumoxidkügelchen verleihen der Schleifscheibe als geschlossene Poren zusätzliche Porosität von bis zu 70 % und sorgen dabei gleichzeitig für ausreichend Stabilität. Problematisch ist hierbei allerdings, dass diese geschlossenen Poren zwar Kühlmittel aufnehmen können, aber für gewöhnlich nicht in der Lage sind Schleifspan abzutransportieren. [0007] Die DE 602 06 661 T2 beschreibt eine imprägnierte glasartig gebundene Schleifscheibe, die mit einer schwefelhaltigen organischen Substanz als Seh leifhilfsstoff imprägniert ist. Dieses Imprägniermittel ist eine Kohlenwasserstoffverbindung mit mindestens einer Kohlenstoff-Schwefel-Bindung. Als Porenbildner können unter anderem auch organische Stoffe, wie Nussschalen, Harze oder Holzmehl, verwendet werden, die jedoch bei der angegebenen Brenntemperatur von 538 bis 13710C (1000 bis 25000F) während dem Brennvorgang rückstandslos verbrennen dürften.US 5,203,886 A describes a grinding wheel which consists of a combination of pore formers, namely hollow aluminum oxide beads and organic pore-forming agent, and a sol-gel of aluminum oxide abrasive grains. The organic pore former may be made from nutshells, carbon, flower seeds, starch, sugar or wood particles. The organic pore-forming agent completely decomposes on firing of the grinding wheel, leaving open pores in the grinding wheel. The resulting achieved porosity of the grinding wheel is about 1 to 12% of its volume. The temperature-resistant, hollow, thin-walled aluminum oxide beads give the grinding wheel, as closed pores, additional porosity of up to 70% while at the same time ensuring sufficient stability. The problem here is, however, that these closed pores can absorb coolant, but are usually not able to remove sanding chip. DE 602 06 661 T2 describes an impregnated glass-like bonded grinding wheel, which is impregnated with a sulfur-containing organic substance as Seh leifhilfsstoff. This impregnating agent is a hydrocarbon compound having at least one carbon-sulfur bond. Organic substances, such as nutshells, resins or wood flour, may be used as pore formers, but these should burn without residue at the stated firing temperature of 538 to 1371 ° C. (1000 to 2500 ° F.) during the firing process.
[0008] In der DE 12 943 A geht es um ein Verfahren, um poröses Porzellan,DE 12 943 A is a method for porous porcelain,
Steingut oder Ton herzustellen. Als Porenbildner werden eine Vielzahl von Stoffen, so wie Holz, Hanf, Flachs, Papier und Körner verschiedener Art genannt. Diese Porenbildner verbrennen allerdings bei dem beschriebenen Verfahren während des Brenn prozesses. Das nach diesem Verfahren hergestellte Steingut eignet sich unter anderem zur Verwendung als künstliche Mühlsteine in Getreidemühlen.Earthenware or clay. Pore formers are a variety of substances, such as wood, hemp, flax, paper and grains called various types. However, these pore formers burn in the process described during the firing process. The stoneware produced by this process is suitable, inter alia, for use as artificial millstones in grain mills.
[0009] Die DE 10 2004 035 088 A1 beschreibt eine organisch gebundeneDE 10 2004 035 088 A1 describes an organically bound
Trennscheibe mit einem funktionellen Additiv. Der Schleifkörper umfasst ein Bindemittel (Phenolharze, Epoxidharze, Imide), Schleifkorn und mindestens einen funktionellen Füllstoff. Der funktionelle Füllstoff ist hierbei eine Metalllegierung, die in Abhängigkeit von dem zu bearbeitenden Werkstoff gewählt werden kann. Bei der Herstellung wird eine Brenntemperatur im Bereich von 15O0C bis 25O0C angewandt, und der Aushärtevorgang dauert insgesamt 12 bis 76 Stunden.Cutting disc with a functional additive. The abrasive article comprises a binder (phenolic resins, epoxy resins, imides), abrasive grain and at least one functional filler. The functional filler here is a metal alloy, which can be selected depending on the material to be processed. In the production, a firing temperature in the range of 15O 0 C to 25O 0 C is applied, and the curing process takes a total of 12 to 76 hours.
[0010] Die DE 697 05 538 T2 beschreibt abrasive Gegenstände und Verfahren zu deren Herstellung. Als Bindemittel kommen unter anderem Phenolharze und Epoxidharze zum Einsatz. Das verwendete Schleifkorn hat Durchmesser von etwa 1 μm bis etwa 10 mm. Das Aushärten dieser Schleifscheiben erfolgt über einen Zeitraum von 8 bis 15 Stunden bei Temperaturen von 66 bis 12O0C.DE 697 05 538 T2 describes abrasive articles and methods for their preparation. The binders used include phenolic resins and epoxy resins. The abrasive grain used has diameters of about 1 μm to about 10 mm. The curing of these grinding wheels takes place over a period of 8 to 15 hours at temperatures of 66 to 12O 0 C.
[0011] Die DE 102 97 124 T5 beschreibt ein Verfahren zur Herstellung eines verglasten Werkzeugs mit Superschleifmittel, bei dem eine gefrittete Glasbindungszusammensetzung ausgewählt wird, ein Superschleifmittelbestandteil, ein Füllmittelbestandteil mit Hohlkörpern und die Glasbindungszusammensetzung kombiniert werden, und die kombinierten Bestandteile bei etwa 600 bis 85O0C gebrannt werden.DE 102 97 124 T5 describes a method for producing a glazed tool with superabrasive, in which a fritted glass bonding composition is selected Superabrasive component, a filler component with hollow bodies and the glass bonding composition are combined, and the combined components are fired at about 600 to 85O 0 C.
Darstellung der ErfindungPresentation of the invention
[0012][0012]
Technische AufgabeTechnical task
[0013] Aufgabe der vorliegenden Erfindung ist es, kunstharzgebundeneObject of the present invention is resin-bonded
Schleifscheiben bereitzustellen, die hohe Standzeiten aufweisen, sich nicht zusetzen und einen kühlen Schliff haben.To provide grinding wheels that have a long service life, do not clog up and have a cool finish.
Technische LösungTechnical solution
[0014] Bei einer Schleifscheibe der eingangs genannten Art, wird diese Aufgabe dadurch gelöst, dass die Pflanzensamen in der fertig gestellten Schleifscheibe enthalten sind.In a grinding wheel of the type mentioned, this object is achieved in that the plant seeds are included in the finished grinding wheel.
[0015] Die Schleifscheibe besteht aus einer Mischung von Schleifkorn,The grinding wheel consists of a mixture of abrasive grain,
Bindemittel und Porenbildner, wobei die Porenbildner Pflanzensamen sind, und die Pflanzensamen bei der Herstellung nicht verbrannt werden, sondern in der fertig gestellten Schleifscheibe enthalten sind.Binders and pore formers, wherein the pore formers are plant seeds, and the plant seeds are not burned in the production, but are included in the finished grinding wheel.
[0016] Die Pflanzensamen werden bei der Herstellung der Schleifscheibe als organische Porenbildner verwendet. Die Pflanzensamen werden dabei nicht - wie bei der Herstellung von keramisch gebundenen Schleifscheiben üblich - bei der Herstellung verbrannt, sondern bleiben intakt und bilden einen wichtigen Bestandteil der fertig gestellten Schleifscheibe.The plant seeds are used in the manufacture of the grinding wheel as organic pore-forming agent. The plant seeds are not - as in the production of ceramic bonded grinding wheels usual - burned during manufacture, but remain intact and form an important part of the finished grinding wheel.
[0017] Den Pflanzensamen kommen dabei mehrere Funktionen zu. Sie besitzen als Bestandteil der Schleifscheibe eine gewisse Stützwirkung, die das frühzeitige Ausbrechen des Schleifkorns verhindert. Neben dieser Stützfunktion können die Pflanzensamen allerdings auch die Aufgabe von herkömmlichen Poren erfüllen und zum Beispiel für den Abtransport der Schleifspäne sorgen. Da die Pflanzensamen relativ weich sind, können sie von den zumeist härteren Schleifspänen verformt werden, und diese dann in dem neu entstandenen Porenraum abtransportieren. Es ist auch möglich, dass die heißen Schleifspäne, welche Temperaturen von zwischen 1500 °C und 2000 °C besitzen, die Pflanzensamen beim Schleifvorgang verbrennen. Der dabei entstehende Porenraum ist dann vergleichbar mit dem einer herkömmlichen Pore und kann dementsprechend zum Abtransport des Schleifspans dienen. Zusätzlich kann beim Schleifen von NE-Metallen durch den Zusatz von Porenbildnern in Form von pflanzlichen Samen das Zusetzen der Scheibe verhindert werden.The plant seeds are doing several functions. They have as part of the grinding wheel a certain support effect, which prevents the early breaking out of the abrasive grain. In addition to this support function, however, the plant seeds can also fulfill the task of conventional pores and provide, for example, for the removal of the grinding chips. Since the plant seeds are relatively soft, they can be deformed by the usually harder grinding chips, and then transport them away in the newly formed pore space. It is also possible that the hot grinding chips, which have temperatures of between 1500 ° C and 2000 ° C, the plant seeds Burn grinding process. The resulting pore space is then comparable to that of a conventional pore and can accordingly serve for the removal of the sanding chip. In addition, when grinding non-ferrous metals by the addition of pore formers in the form of plant seeds, the clogging of the disc can be prevented.
Vorteilhafte WirkungenAdvantageous effects
[0018] Ein Vorteil der vorliegenden Erfindung ist, dass es natürlicheAn advantage of the present invention is that it is natural
Pflanzensamen in den verschiedensten Formen und Größen gibt, so dass die Porosität des Schleifwerkzeugs nahezu beliebig angepasst werden kann. Dies ist besonders wichtig, weil die Größe des entstehenden Spans je nach Größe des Schleifkorns und je nach Beschaffenheit des Werkstückes unterschiedlich sein kann.Plant seeds come in a variety of shapes and sizes, so that the porosity of the grinding tool can be adjusted almost arbitrarily. This is particularly important because the size of the resulting chip may vary depending on the size of the abrasive grain and the nature of the workpiece.
[0019] Die harzgebundene Schleifscheibe der vorliegenden Erfindung besteht zu 60 bis 90 Gew.-% aus Schleifkorn und zu 10 bis 40 Gew.-% aus Binder. Die Pflanzensamen können bis zu 80 Gew.-% des Binders ausmachen. Daneben können auch verschiedene andere bekannte Füllstoffe zum Einsatz kommen.The resin-bonded grinding wheel of the present invention consists of 60 to 90 wt .-% of abrasive grain and 10 to 40 wt .-% of binder. The plant seeds can make up to 80% by weight of the binder. In addition, various other known fillers can be used.
[0020] Als Schleifkorn eignen sich im Wesentlichen alle üblicherweise als Schleifkorn verwendeten Materialien. Diese umfassen Korunde, Siliziumkarbide, Chromoxide, kubisches Bornitrid, Diamanten, Siliziumoxide, Zirkonoxide, Granat und Schmirgel, sowie Mischungen daraus. Die Schleifkörner können unterschiedliche Größen im Bereich von 0,5 μm bis 5000 μm haben. Die Größe sowie das Material der Schleifkörner kann in Abhängigkeit des zu bearbeitenden Werkstücks gewählt werden. Vorzugsweise hat das Schleifkorn eine Korngröße von 105 μm bis 2830 μm, noch bevorzugter von 250 μm bis 2830 μm.As abrasive grain are essentially all commonly used as abrasive grain materials. These include corundum, silicon carbides, chromium oxides, cubic boron nitride, diamonds, silicon oxides, zirconium oxides, garnet and emery, and mixtures thereof. The abrasive grains may have different sizes in the range of 0.5 μm to 5000 μm. The size and the material of the abrasive grains can be selected depending on the workpiece to be machined. Preferably, the abrasive grain has a particle size of 105 microns to 2830 microns, more preferably from 250 microns to 2830 microns.
[0021] In einer bevorzugten Ausführungsform kommen ölhaltige Samen, wie z.B. Rapssamen, zum Einsatz. Durch das in den Pflanzensamen enthaltene Öl kommt es zu einem Schmiereffekt, d.h. das Öl reduziert die Reibung des Schleifkorns bei der Spanbildung und verringert damit die Wärmeentwicklung beim Schleifen. Dadurch wird zum einen die Standzeit der Schleifscheibe erhöht und zum anderen das Werkstück vor unerwünschter Aufhärtung geschützt.In a preferred embodiment, oily seeds, such as rapeseed, are used. The oil contained in the plant seeds causes a lubricating effect, ie the oil reduces the friction of the abrasive grain during chip formation and thus reduces the heat development during grinding. As a result, on the one hand increases the service life of the grinding wheel and on the other hand the workpiece before protected against undesired hardening.
[0022] Neben ölhaltigen Pflanzensamen können auch Mohn-, Klee-, Lupinen-, Senf-, Seradella- oder Wickensamen oder ähnliche Pflanzensamen verwendet werden.In addition to oil-containing plant seeds and poppy seed, clover, lupine, mustard, Seradella or Wickensamen or similar plant seeds can be used.
[0023] Das Bindemittel ist eine Mischung aus einer synthetisch hergestellten, polymeren Verbindung und Füllstoffen. Die polymere Verbindung kann Kunstharz sein, das sowohl in flüssiger Form als auch pulverförmig verwendet werden kann. Geeignete Harze sind zum Beispiel Polyimide, Phenolharze, Epoxidharze, ungesättigte Polyester, und dergleichen.The binder is a mixture of a synthetically prepared polymeric compound and fillers. The polymeric compound may be synthetic resin, which may be used both in liquid form and in powder form. Suitable resins are, for example, polyimides, phenolic resins, epoxy resins, unsaturated polyesters, and the like.
Herstellungsverfahrenproduction method
[0024] Die Erfindung betrifft auch ein Verfahren zur Herstellung der erfindungsgemäßen Schleifscheiben. Dabei wird zunächst eine rieselfähige Mischung aus Schleifkorn, Binder und Pflanzensamen hergestellt. Diese Mischung wird gleichmäßig in eine vorgefertigte Pressform eingefüllt und anschließend auf ein vorher festgelegtes Volumen gepresst. Anschließend durchläuft der Pressung in einem Ofen ein Aushärteprogramm, wobei er Temperaturen von bis zu 250°C ausgesetzt wird. Das Pressen und Aushärten der Schleifscheibe kann dabei auch in einem Schritt erfolgen.The invention also relates to a method for producing the grinding wheels according to the invention. First, a free-flowing mixture of abrasive grain, binder and plant seeds is produced. This mixture is poured evenly into a preformed mold and then pressed to a predetermined volume. The press is then subjected to a curing program in an oven, where it is exposed to temperatures of up to 250 ° C. The pressing and curing of the grinding wheel can also be done in one step.
[0025] Die Schleifscheibenmischung wird unter äußerst gleichmäßiger Verteilung in eine Pressform eingefüllt. Anschließend wird der Pressung in einer gebräuchlichen Presse, z.B. einer hydraulischen Presse, unter Pressdrücken von 15 bis 45 N/mm2, vorzugsweise 20 bis 35 N/mm2 eingesetzt, noch vorzugsweise von 30 N/mm2 zu einem Grünling verpresst. Die Pressdauer kann im Bereich von 1 bis 100 Sekunden vorzugsweise 5 - 50 Sekunden liegen. Zur Steigerung der strukturellen Integrität der Schleifscheibe können zusätzliche Armierungen (z.B. Glasgewebe) mitverpresst werden. Vorzugsweise wird der Pressvorgang bei Raumtemperatur durchgeführt.The grinding wheel mixture is filled with extremely uniform distribution in a mold. Subsequently, the pressing in a conventional press, for example a hydraulic press, under pressing pressures of 15 to 45 N / mm 2 , preferably 20 to 35 N / mm 2 used, more preferably pressed from 30 N / mm 2 to form a green compact. The pressing time may be in the range of 1 to 100 seconds, preferably 5 to 50 seconds. To increase the structural integrity of the grinding wheel, additional reinforcements (eg glass fabric) can be co-pressed. Preferably, the pressing operation is carried out at room temperature.
[0026] Der Grünling wird dann bei erhöhter Temperatur ausgehärtet. DerThe green compact is then cured at elevated temperature. Of the
Aushärteprozess erfolgt in Kammer- oder Tunnelöfen. Die Temperatur kann dabei durch Programmregler automatisch gesteuert werden. Die Auswahl eines geeigneten Härtungsprogramms ist abhängig von einer Reihe von Faktoren, wie den Abmessungen und der Struktur der Scheibe, dem Füllstoffanteil, dem Harzbindungsanteil sowie denCuring process takes place in chamber or tunnel ovens. The temperature can be controlled automatically by the program controller. The selection of a suitable curing program depends on one A number of factors, such as the dimensions and structure of the disc, the proportion of filler, the resin bond fraction and the
Harzeigenschaften. Die Temperatur, bei der das Aushärten erfolgt, wir so gewählt, dass die in dem Grünling vorhanden Pflanzensamen nicht verbrennen.Resin properties. The temperature at which curing occurs, we selected so that the plant seeds present in the green plant do not burn.
[0027] Typischerweise werden die Presslinge zunächst bei Temperaturen zwischen 50°C und 100°C vorgetrocknet und anschließend beiTypically, the pellets are first pre-dried at temperatures between 50 ° C and 100 ° C and then at
Temperaturen von bis zu 250°C, vorzugsweise von bis zu 200°C, noch vorzugsweise von bis zu 180°C und insbesondere von bis zu 150°C ausgehärtet, wodurch sie ihre endgültige Form und Beschaffenheit erhalten. Der Aushärteprozess dauert zwischen 5 und 40 Stunden, vorzugsweise zwischen 10 und 30 Stunden und noch vorzugsweise 15Temperatures of up to 250 ° C, preferably up to 200 ° C, more preferably cured up to 180 ° C and in particular of up to 150 ° C, whereby they obtain their final shape and texture. The curing process lasts between 5 and 40 hours, preferably between 10 and 30 hours and more preferably 15
Stunden.Hours.
Weg(e) zur Ausführung der ErfindungWay (s) for carrying out the invention
[0028] Im Folgenden wird beispielhaft die Herstellung einer Schleifscheibe mitThe following is an example of the production of a grinding wheel
Mohnsamen beschrieben:Poppy seeds described:
[0029] Zur Herstellung der Schleifscheibe wird Schleifkorn mit der Korngröße 36To produce the grinding wheel is abrasive grain with the grain size 36
(-500 μm) zunächst in einem Mischer vorgemischt. Dann erfolgt die(-500 microns) first premixed in a mixer. Then the
Zugabe von Resol (flüssiges Phenolharz), wodurch das Schleifkorn gleichmäßig befeuchtet und mit einem dünnen Harzfilm überzogen wird.Addition of resole (liquid phenolic resin), whereby the abrasive grain is evenly moistened and coated with a thin resin film.
Wenn das Schleifkorn gleichmäßig mit Resol benetzt ist, wird eineIf the abrasive grain is evenly wetted with resole, a
Mischung aus pulverförmigem Phenolharz, Mohnsamen und Kryolith hinzugefügt.Added mixture of powdered phenolic resin, poppy seeds and cryolite.
[0030] Die Rezeptur setzt sich folgendermaßen zusammen: [0031]The formulation is composed as follows: [0031]
Tabelle 0001Table 0001
[0032] Der Mischprozess wird solange fortgesetzt bis die gewünschte homogene Konsistenz erreicht ist. Die Schleifscheibenmischung soll dabei nicht zu trocken aber staubfrei und rieselfähig sein. Nach ihrer Fertigstellung wird die Mischung abgesiebt und einige Stunden abgelagert.The mixing process is continued until the desired homogeneous consistency is reached. The grinding wheel mixture should not be too dry but dust-free and free-flowing. After its completion will be the mixture sieved and deposited for several hours.
[0033] Nach der Ablagerung wird die Pressmischung genau eingewogen und mit Hilfe von Schiebern in die Pressform befördert. Die Mischung wird unter äußerst gleichmäßiger Verteilung in die Pressform eingefüllt. Anschließend wird der Pressung in einer gebräuchlichen Presse, unter einem Pressdruck von 30 N/mm2 innerhalb weniger Sekunden kalt zu einem Grünling verpresst. Zur Steigerung der strukturellen Integrität der Schleifscheibe werden dabei drei Gewebe mitverpresst.After deposition, the press mixture is accurately weighed and transported by means of sliders in the mold. The mixture is filled into the mold with extremely even distribution. Subsequently, the pressing is pressed cold in a conventional press, under a pressure of 30 N / mm 2 within a few seconds to a green compact. In order to increase the structural integrity of the grinding wheel while three tissues are mitverpresst.
[0034] Nach dem Pressen wird der erzeugte Grünling zwischen Metallscheiben verspannt und über ein mehrstufiges Aushärteprofil bis zu einer Temperatur von 180°C über insgesamt 15 Stunden gebrannt. Im Anschluss an das Brennen wird die fertige Schleifscheibe zwischen den Metallplatten entnommen.After pressing, the green compact produced is clamped between metal discs and fired over a multi-stage curing profile up to a temperature of 180 ° C for a total of 15 hours. After firing, the finished grinding wheel is removed between the metal plates.
[0035] Die fertige Scheibe hat die Maße 125 x 7 x 22,23 mm und weist einen angenehm kühlen Schliff auf. The finished disc has the dimensions 125 x 7 x 22.23 mm and has a pleasantly cool cut.

Claims

Ansprüche claims
1. Kunstharzgebundene Schleifscheibe, enthaltend eine Mischung von Schleifkorn, Bindemittel und Porenbildner, wobei die Porenbildner Pflanzensamen sind, dadurch gekennzeichnet, dass die Pflanzensamen in der fertig gestellten Schleifscheibe enthalten sind.A resin-bonded grinding wheel containing a mixture of abrasive grain, binder and pore-forming agent, wherein the pore-forming agents are plant seeds, characterized in that the plant seeds are contained in the finished grinding wheel.
2. Schleifscheibe gemäß Anspruch 1 , die zu 60 bis 90 Gew.-% aus Schleifkorn und zu 10 bis 40 Gew.-% aus Binder besteht.2. Abrasive wheel according to claim 1, which consists of 60 to 90 wt .-% of abrasive grain and 10 to 40 wt .-% of binder.
3. Schleifscheibe gemäß Anspruch 2, wobei die Pflanzensamen bis zu 80 Gew.-% des Binders ausmachen.A grinding wheel according to claim 2, wherein the plant seeds constitute up to 80% by weight of the binder.
4. Schleifscheibe gemäß einem der vorhergehenden Ansprüche, wobei das Schleifkorn Korund, Siliziumkarbid, Chromoxid, kubisches Bornitrid, Diamant, Siliziumoxid, Zirkonoxid, Granat und Schmirgel, oder Mischungen daraus ist.A grinding wheel according to any one of the preceding claims, wherein the abrasive grain is corundum, silicon carbide, chromium oxide, cubic boron nitride, diamond, silica, zirconium oxide, garnet and emery, or mixtures thereof.
5. Schleifscheibe gemäß einem der vorhergehenden Ansprüche, wobei die Größe der Schleifkörner im Bereich von 105 μm bis 2830 μm, vorzugsweise im Bereich von 250 μm bis 2830 μm, ist.5. Grinding wheel according to one of the preceding claims, wherein the size of the abrasive grains in the range of 105 microns to 2830 microns, preferably in the range of 250 microns to 2830 microns, is.
6. Schleifscheibe gemäß einem der vorhergehenden Ansprüche, wobei die Pflanzensamen Öl enthalten.6. Grinding wheel according to one of the preceding claims, wherein the plant seeds contain oil.
7. Schleifscheibe gemäß einem der vorhergehenden Ansprüche, wobei die Pflanzensamen Raps-, Mohn-, Klee-, Lupinen-, Senf-, Seradella-, Wickensamen oder ähnliche Pflanzensamen sind.7. Grinding wheel according to one of the preceding claims, wherein the plant seeds are rapeseed, poppy, clover, lupine, mustard, Seradella-, Wickensamen or similar plant seeds.
8. Schleifscheibe gemäß einem der vorhergehenden Ansprüche, wobei das Bindemittel flüssiges oder pulverförmiges Kunstharz, zum Beispiel Polyimid, Phenolharz, Epoxidharz, ungesättigtes Polyester ist.8. Abrasive wheel according to one of the preceding claims, wherein the binder is liquid or powdered synthetic resin, for example polyimide, phenolic resin, epoxy resin, unsaturated polyester.
9. Schleifscheibe gemäß einem der vorhergehenden Ansprüche, die eine Armierung enthält, insbesondere eine Armierung aus Glasgewebe.9. Grinding wheel according to one of the preceding claims, which contains a reinforcement, in particular a reinforcement of glass fabric.
10. Verfahren zur Herstellung einer Schleifscheibe gemäß einem der Ansprüche 1 bis 9, welches die folgenden Schritte umfasst: Vermischen von Schleifkorn, Bindemittel und Pflanzensamen, Einfüllen der Ausgangsmischung in eine dafür vorgesehene Form, Pressen der Mischung, Vortrocknen der Mischung und Aushärten der Schleifscheibe, dadurch gekennzeichnet, dass die Pflanzensamen bei der Fertigung der Schleifscheibe nicht verbrannt werden.A method of making a grinding wheel according to any one of claims 1 to 9, comprising the steps of: mixing abrasive grain, binder and plant seeds, charging the starting mixture into a mold therefor, pressing the mixture, pre-drying the mixture and hardening the grinding wheel, characterized in that the plant seeds are not burned in the manufacture of the grinding wheel.
11. Verfahren gemäß Anspruch 10, wobei das Pressen der Mischung unter Pressdrücken von 15 bis 45 N/mm2, vorzugsweise 20 bis 35 N/mm2, noch vorzugsweise von 30 N/mm2 zu einem Grünling erfolgt.11. The method according to claim 10, wherein the pressing of the mixture under pressing pressures of 15 to 45 N / mm 2 , preferably 20 to 35 N / mm 2 , still preferably from 30 N / mm 2 to a green compact.
12. Verfahren gemäß Anspruch 10 oder 11 , wobei die Pressdauer im Bereich von 1 bis 100 Sekunden vorzugsweise 5 bis 50 Sekunden liegt.12. The method according to claim 10 or 11, wherein the pressing time in the range of 1 to 100 seconds, preferably 5 to 50 seconds.
13. Verfahren gemäß einem der Ansprüche 10 bis 12, wobei die Schleifscheibe bei Temperaturen von bis zu 250°C, vorzugsweise von bis zu 200°C, noch vorzugsweise von bis zu 180°C und insbesondere von bis zu 150°C ausgehärtet wird.13. The method according to any one of claims 10 to 12, wherein the grinding wheel is cured at temperatures of up to 250 ° C, preferably of up to 200 ° C, more preferably of up to 180 ° C and in particular of up to 150 ° C.
14. Verfahren gemäß einem der Ansprüche 10 bis 13, wobei das Aushärten der Schleifscheibe 5 bis 40 Stunden, vorzugsweise 10 bis 30 Stunden und noch vorzugsweise 15 Stunden dauert. 14. The method according to any one of claims 10 to 13, wherein the curing of the grinding wheel takes 5 to 40 hours, preferably 10 to 30 hours and more preferably 15 hours.
EP10701675.0A 2009-01-29 2010-01-28 Grinding wheel comprising vegetable seeds as filling material and manufacturing method Not-in-force EP2391482B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10701675T PL2391482T3 (en) 2009-01-29 2010-01-28 Grinding wheel comprising vegetable seeds as filling material and manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009006699A DE102009006699A1 (en) 2009-01-29 2009-01-29 Abrasive with vegetable seed capsules as filler
PCT/EP2010/050996 WO2010086371A1 (en) 2009-01-29 2010-01-28 Grinding disk having plant seed capsules as a filler and method for the production thereof

Publications (2)

Publication Number Publication Date
EP2391482A1 true EP2391482A1 (en) 2011-12-07
EP2391482B1 EP2391482B1 (en) 2013-09-04

Family

ID=42123034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10701675.0A Not-in-force EP2391482B1 (en) 2009-01-29 2010-01-28 Grinding wheel comprising vegetable seeds as filling material and manufacturing method

Country Status (10)

Country Link
US (1) US20110281511A1 (en)
EP (1) EP2391482B1 (en)
JP (1) JP2012516241A (en)
CN (1) CN102300675A (en)
BR (1) BRPI1007425A2 (en)
DE (1) DE102009006699A1 (en)
ES (1) ES2437392T3 (en)
MX (1) MX2011007914A (en)
PL (1) PL2391482T3 (en)
WO (1) WO2010086371A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012004076A1 (en) 2012-03-02 2013-09-05 Peter Klenert Producing ceramic materials useful e.g. as refractory assemblies and dielectrics, comprises reacting ceramics and rocks with inorganic fillers using a binding agent, preferably a biogenic polymer produced e.g. from epoxidized triglycerides
JP6434266B2 (en) * 2013-12-17 2018-12-05 富士紡ホールディングス株式会社 Lapping resin surface plate and lapping method using the same
CN105505313A (en) * 2015-11-25 2016-04-20 江苏仓环铜业股份有限公司 An abrasive used for cutter polishing or passivating
RU2685825C1 (en) * 2018-07-10 2019-04-23 Открытое акционерное общество " Волжский абразивный завод" Mass for production of highly porous abrasive tool and method for production of highly porous abrasive tool
JP7197603B2 (en) * 2018-11-13 2022-12-27 株式会社アドマテックス Abrasive for multi-core ferrules
CN110303439B (en) * 2019-07-31 2020-10-27 中铁隆昌铁路器材有限公司 Forming process of passive grinding wheel special for high-speed grinding vehicle
DE102022126743A1 (en) 2022-10-13 2024-04-18 Ernst-Abbe-Hochschule Jena Körperschaft des öffentlichen Rechts Tool for material removal and method for its manufacture

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE13821C (en) * G. A. buchholz in Charlottenburg, Spandauerstrafse 25 Process for the production of porous grinding media made of porcelain together with the devices used for this purpose
US2319182A (en) * 1938-11-16 1943-05-11 Agicide Lab Inc Molded article
US2537541A (en) * 1945-07-19 1951-01-09 Norton Co Grinding wheel construction
US3925034A (en) * 1973-05-14 1975-12-09 Res Abrasive Products Inc Resin bonded grinding wheel containing gas-filled thermoplastic resin beads and method of making it
US4903440A (en) * 1988-11-23 1990-02-27 Minnesota Mining And Manufacturing Company Abrasive product having binder comprising an aminoplast resin
US5035723A (en) * 1989-04-28 1991-07-30 Norton Company Bonded abrasive products containing sintered sol gel alumina abrasive filaments
GB8927983D0 (en) * 1989-12-11 1990-02-14 Minnesota Mining & Mfg Abrasive elements
US5221294A (en) 1991-05-22 1993-06-22 Norton Company Process of producing self-bonded ceramic abrasive wheels
US5203886A (en) 1991-08-12 1993-04-20 Norton Company High porosity vitrified bonded grinding wheels
JP3314213B2 (en) * 1993-03-02 2002-08-12 富山県 Resinoid grinding wheel and method of manufacturing the same
JPH09207071A (en) * 1995-12-01 1997-08-12 Masayuki Oka Grease abrasive-contained sponge-like grinding wheel
US5919549A (en) * 1996-11-27 1999-07-06 Minnesota Mining And Manufacturing Company Abrasive articles and method for the manufacture of same
US6074278A (en) * 1998-01-30 2000-06-13 Norton Company High speed grinding wheel
JPH11347952A (en) * 1998-06-10 1999-12-21 Hitachi Chem Co Ltd Resin grinding wheel for grinding semi-conductor wafer, and its manufacture
JP3498952B2 (en) * 2001-04-16 2004-02-23 株式会社チップトン Manufacturing method of resinoid grinding wheel
US6609963B2 (en) * 2001-08-21 2003-08-26 Saint-Gobain Abrasives, Inc. Vitrified superabrasive tool and method of manufacture
JP2003191170A (en) * 2001-12-26 2003-07-08 Fuji Grinding Wheel Co Ltd Abrasive cutting wheel and its manufacturing method
US6500220B1 (en) * 2002-02-19 2002-12-31 Cimcool Industrial Products, Inc. Impregnated grinding wheel
CA2457249A1 (en) * 2003-12-09 2005-06-09 Suntek Industries Ltd. Preparation of coated abrasive disk
DE102004035088A1 (en) * 2004-07-20 2006-02-16 Chemetall Ges.Mbh Organically bound release or abrasive particles with a functional additive
JP2008142883A (en) * 2006-11-13 2008-06-26 Kurenooton Kk Resinoid bonded grinding wheel
JP5020333B2 (en) * 2006-12-20 2012-09-05 スリーエム イノベイティブ プロパティズ カンパニー Coated abrasive disc and method for making the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010086371A1 *

Also Published As

Publication number Publication date
US20110281511A1 (en) 2011-11-17
BRPI1007425A2 (en) 2016-02-16
CN102300675A (en) 2011-12-28
WO2010086371A1 (en) 2010-08-05
EP2391482B1 (en) 2013-09-04
JP2012516241A (en) 2012-07-19
MX2011007914A (en) 2011-08-17
PL2391482T3 (en) 2014-02-28
ES2437392T3 (en) 2014-01-10
DE102009006699A1 (en) 2010-08-05

Similar Documents

Publication Publication Date Title
DE69730439T2 (en) GRINDING WHEEL WITH HIGH PERMEABILITY
EP2391482B1 (en) Grinding wheel comprising vegetable seeds as filling material and manufacturing method
DE69730438T2 (en) PROCESS FOR PRODUCING GRINDING WHEELS WITH HIGH PERMEABILITY
DE69534025T2 (en) IMPROVED GRINDING WHEELS AND METHOD FOR THEIR MANUFACTURE
AT500569B1 (en) GRINDING MATERIALS WITH NOVEL STRUCTURES AND METHOD OF GRINDING
DE60112740T2 (en) POROUS GRINDING WITH CERAMIC GRINDING COMPOSITES, METHOD OF PREPARATION AND METHOD OF USE
DE112005001119B4 (en) Truing blade for machining abrasive tools and method for making a truing blade
DE69937719T2 (en) Ceramic-bonded abrasive test specimen reinforced by resin impregnation and method for producing the same
DE60007873T2 (en) METHOD FOR PRODUCING MICRO GRINDING TOOLS
DE2635104C3 (en) Process for the production of bonded abrasive articles
DD297595A5 (en) GRINDING BODY AND METHOD FOR THE PRODUCTION THEREOF
DE10392644T5 (en) Improved coated abrasives
DE10297124T5 (en) Glazed tool with super abrasive and manufacturing process
EP0114280B1 (en) Method of manufacturing abrasive bodies
EP2251143B1 (en) Method of manufacturing a tool made from bound abrasive agents
DE19805889C2 (en) Sintered body based on corundum with a closed cell structure, its production and use
DE2350139A1 (en) Grinding element contains abrasive particles and binding agent - forming walls of hollow objects stable relative to grinding forces
EP3277461B1 (en) Open pore ceramic bonded abrasive tool, method for forming the abrasive tool and pore forming composition used for forming the abrasive tool
DE2921341C2 (en) Abrasive material and process for its manufacture
EP3590658B1 (en) Method for producing thin grinding bodies
US2085137A (en) Abrasive article
DE812294C (en) Abrasive body with bond made of finely divided oxides
DE10221483C1 (en) Process for the production of free sintered annular grinding pads for grinding wheels
DE648232C (en) Process for the production of grinding wheels
EP3360944A2 (en) Abrasive article

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: 20110817

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20130419

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

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

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 630217

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130915

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010004595

Country of ref document: DE

Effective date: 20131031

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2437392

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20140110

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

Ref country code: NO

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: 20131204

Ref country code: LT

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: 20130904

Ref country code: CY

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: 20130731

Ref country code: SE

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: 20130904

Ref country code: HR

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: 20130904

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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

Ref country code: FI

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: 20130904

Ref country code: GR

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: 20131205

Ref country code: LV

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: 20130904

Ref country code: SI

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: 20130904

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

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

Ref country code: CY

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: 20130904

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

Ref country code: RO

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: 20130904

Ref country code: IS

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: 20140104

Ref country code: EE

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: 20130904

Ref country code: CZ

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: 20130904

Ref country code: SK

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: 20130904

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

Ref country code: NL

Payment date: 20140122

Year of fee payment: 5

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

Ref country code: ES

Payment date: 20140122

Year of fee payment: 5

Ref country code: IT

Payment date: 20140129

Year of fee payment: 5

Ref country code: FR

Payment date: 20140124

Year of fee payment: 5

Ref country code: PL

Payment date: 20140127

Year of fee payment: 5

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010004595

Country of ref document: DE

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

Ref country code: PT

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: 20140106

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

BERE Be: lapsed

Owner name: RHODIUS SCHLEIFWERKZEUGE G.M.B.H. & CO. KG

Effective date: 20140131

26N No opposition filed

Effective date: 20140605

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

Ref country code: LU

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: 20140128

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010004595

Country of ref document: DE

Effective date: 20140605

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

Effective date: 20140128

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: 20130904

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: 20140131

Ref country code: CH

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

Effective date: 20140131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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: 20140128

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

Ref country code: IE

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

Effective date: 20140128

Ref country code: BE

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

Effective date: 20140131

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

Ref country code: MC

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: 20130904

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

Ref country code: DE

Payment date: 20150129

Year of fee payment: 6

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20150801

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 NON-PAYMENT OF DUE FEES

Effective date: 20150801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150930

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: 20150202

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: 20150128

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20160226

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

Ref country code: MT

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: 20130904

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 630217

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150128

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

Ref country code: SM

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: 20130904

Ref country code: ES

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

Effective date: 20150129

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

Ref country code: PL

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

Effective date: 20150128

Ref country code: AT

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

Effective date: 20150128

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

Ref country code: BG

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: 20130904

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

Ref country code: HU

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

Effective date: 20100128

Ref country code: TR

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: 20130904

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502010004595

Country of ref document: DE

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: 20160802

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

Ref country code: MK

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: 20130904