DE102004035088A1 - Organically bound release or abrasive particles with a functional additive - Google Patents

Abstract

The present invention relates to an organically bound release or abrasive article, the DOLLAR A a. at least one binder; DOLLAR A b. at least one particulate abrasive; DOLLAR A c. at least one particulate functional filler DOLLAR A, wherein the binder encloses the particulate abrasive and the particulate functional filler and wherein the functional filler comprises at least two metals forming a molten phase in a temperature range of 100 to 300 ° C.

Description

The The present invention relates to organically bonded release or abrasive articles which a functional additive in the form of a functional filler contain, as well as a method for their production and the use functional filler for producing such bodies.

in the Prior art organically bonded abrasive articles, e.g. Cutting and grinding wheels, are resin bonded in most cases and contain as essential components abrasives, fillers as well as different binders.

there are used as abrasives e.g. Corundum, oxides, carbides, nitrides or Diamond used. As binders are usually polycondensates used, often e.g. Phenolic resins.

Of the Group of fillers is of particular importance in these systems. It makes a difference one between inactive fillers and functional fillers.

The Main task of functional fillers is the extension the service life of the separating or grinding wheel (high G-factor) and the reduction of the temperature load (tempering color formation, microstructural transformations, etc.) of the workpiece to be machined. Ideally, one will bare cut of the workpiece required.

Inactive fillers increase the tenacity and strength of the resin product. These include, in addition to carbonates such. Calcium carbonate also clays, silicates, oxides, carbides etc.

functional fillers change themselves during the grinding and separating process and therefore act either physically (such as cryolite) or chemical (such as pyrite). To these operations, the when used in the cutting and grinding process simultaneously or can occur in succession counting et al the reduction of frictional resistance and the reduction of Cutting / Grinding forces between grinding wheels and workpiece through Training a primary film or by training a secondary film based on implementation or decomposition products of the functional fillers.

moreover is known as the prior art that by using the functional fillers the grain destruction by diffusion (e.g., spinel formation) through the formation of surface films on grain and workpiece can be avoided. Furthermore, through the training of surface films on the abrasive grain the grain occupancy with metals and the so associated reduction of the cutting ability of the grinding wheel (grain blunting) be avoided, and an additional Protection against oxide formation on the workpiece (blue coloration) causes chemical reaction with the newly formed metal surface become. Furthermore, the thermal decomposition of the Resin matrix can be reduced.

in the U.S. Patent 2,243,105 discloses an abrasive article, which is shown in U.S. Pat Diamond powder as abrasive and an organic resin, a metal powder made of copper and possibly tin powder used. The addition of the Metal powder is said to increase Strength of the abrasive article and better heat dissipation at the contact surface due to the high metal content.

The U.S. Patent 3,283,448 also describes organically bound Abrasive article. Here are next to the abrasive and the organic raw material used metal powder, made of copper, aluminum or silver selected be to the abrasive article high electrical conductivity for the to give electrolytic loops.

in the U.S. Patent 3,984,214, in addition to the use of conventional Components of an abrasive tool, a metallic coating of the abrasive of at least one high boiling point metal powder (e.g., silver, copper, cadmium, etc.) and at least one metal powder having a low boiling point (e.g., zinc, bismuth, tin, etc.), extended to Service life of the grinding wheel to achieve.

US Pat. No. 4,042,347 describes a method for producing a grinding wheel which, in addition to the abrasives, contains a metal matrix of at least two metals. The metals can be selected among others from cobalt, iron or copper and lead to a high-melting alloy, the one increased strength of the grinding wheel results.

The Japanese patent application JP 2002307313 discloses a grinding wheel made of a mixture of a polybenzimidazole resin and at least one metal. The grinding wheel is produced at temperatures of 500 to 650 ° C and is characterized by improved grinding properties.

In The patent literature is the use of many functional fillers to improve the service life and grinding properties of the grinding wheels described. These functional fillers can in industrial production only limited or not used at all.

The Reasons for these limited uses are diverse: a high price (e.g., molybdenum disulfide, etc.), the toxicity the compounds (e.g., lead compound, etc.), pronounced hygroscopicity (e.g. Manganese chloride), which greatly complicates the processing of the substances or the shelf life (Storage stability) products, high water solubility (e.g., certain halide compounds) and the associated problem of landfill of grinding waste, as well the suspected formation of toxic (organic) decomposition products when using the abrasive.

The The steel processing industry is also increasingly demanding the use of chlorine, sulfur and iron-free grinding wheels, so among other things the existing corrosion risk is reduced (stress cracking risk).

This means that many ecologically unproblematic and economically acceptable substances such as zinc sulfide, pyrite, etc. for use in resin-bonded grinding wheels can only be used to a limited extent. Instead, sodium cryolite (Na ₃ AlF ₆ ) is frequently used, which meets the technical requirements of the steel processing industry but is toxic.

outgoing consisted of the above-described disadvantages in the prior art the object of the present invention is to provide new release or abrasive articles develop, which have improved service lives and give a processing surface, free from scaling, tarnish and impurities with S and Cl etc. are. The used abrasives, Binders and fillers are environmentally friendly, especially non-toxic and non-hygroscopic, and it the presence of iron, sulfur and chlorine should be avoided.

• a. mindestens ein Bindemittel;
• b. mindestens einen teilchenförmigen Abrasivstoff;
• c. mindestens einen teilchenförmigen funktionellen Füllstoff;

wobei das Bindemittel den teilchenförmigen Abrasivstoff und den teilchenförmigen funktionellen Füllstoff umschließt und wobei der funktionelle Füllstoff mindestens zwei Metalle umfasst, die eine schmelzflüssige Phase in einem Temperaturbereich von 100 bis 300°C bilden.The above-described object of the present invention is surprisingly achieved by providing an organically bonded release or abrasive article comprising:

• a. at least one binder;
• b. at least one particulate abrasive;
• c. at least one particulate functional filler;

wherein the binder encloses the particulate abrasive and the particulate functional filler, and wherein the functional filler comprises at least two metals forming a molten phase in a temperature range of 100 to 300 ° C.

• a) 3 bis 20 Gew.-%, vorzugsweise 10 bis 15 Gew.-% mindestens eines Bindemittels;
• b) 50 bis 90 Gew.-%, vorzugsweise 60 bis 80 Gew.-% mindestens eines teilchenförmigen Abrasivstoffes;
• c) 1 bis 35 Gew.-%, vorzugsweise 10 bis 25 Gew.-% mindestens eines teilchenförmigen funktionellen Füllstoffes, und
• d) gegebenenfalls bis zu 15 Gew.-% eines inaktiven Füllstoffes,

wobei die Inhaltsstoffe a) bis d) zusammen 100 Gew.% ergeben.The organically bonded release or abrasive article according to the present invention preferably comprises

• a) 3 to 20 wt .-%, preferably 10 to 15 wt .-% of at least one binder;
• b) 50 to 90 wt .-%, preferably 60 to 80 wt .-% of at least one particulate abrasive;
• c) 1 to 35 wt .-%, preferably 10 to 25 wt .-% of at least one particulate functional filler, and
• d) optionally up to 15% by weight of an inactive filler,

wherein the ingredients a) to d) together give 100% by weight.

The listed above Quantities determine the performance of the separating or grinding bodies.

The functional filler of the invention may comprise from two to seven metals independently selected from the group consisting of metals of the first and second main group of the periodic table (IUPAC), Sn, Bi, Ti, Cr, Mo, W, Mn, Ni, Cu, Ag, Zn and Al are selected. Decisive for the composition of the functional filler is that the particulate metal mixture forms a molten phase in a temperature range of 100 to 300 ° C. Preferably, the metals form a molten phase in a temperature range of 115 to 250 ° C, more preferably in a temperature range of 130 to 220 ° C from.

In a particular embodiment indicates the molten one Phase a eutectic temperature, preferably in the range of 130 ° C to 220 ° C. By the use of a metal mixture, which is a eutectic system forms, the melting temperature of the particulate functional filler in particular be reduced, thereby forming the molten phase the separating agent according to the invention or abrasive particles in an early Stage of separation or Abrasive process, can form at even lower temperatures.

In a particularly preferred embodiment contains the functional filler at least the metals tin and / or bismuth.

In a preferred embodiment contains the functional filler Tin and 1 to 6 other metals, independently from the first or second main group of the Periodic Table (IUPAC) and Bi, Ti, Cr, Mo, W, Mn, Ni, Cu, Ag, Zn and Al are selected, all metals functional filler together 100 weight percent result.

An example of a functional filler in the form of a ternary metal system is Sn _95.5 Ag _4.0 Cu _0.5 .

In another preferred embodiment, the functional filler contains the metal system Sn _x Bi _y and up to 5 further metals, where x is an integer between 1 and 99 and y is an integer between 99 and 1 and each of up to 5 further metals may be contained in a percentage of 0 to 99, with all metals of the functional filler together giving 100 weight percent.

The Effect of this alloy as a functional filler is due to the formation of a molten phase in this binary system in a temperature range of 139 to 271 ° C. The choice of the respective alloy composition depends on this from the material to be machined.

When particularly advantageous embodiment The present invention has suggested the use of a tin-bismuth alloy as a functional filler in a composition where the binary system with a Bi content> 20 wt .-% a molten phase at the eutectic temperature of 139 ° C. In the course of development was recognized and proved by test series that this molten phase both the curing process and positively influenced the grinding and / or separation process.

By the alloying of the Bi / Sn alloy with other metals can the Melting temperature further influenced and the positive effect be increased.

Possible further alloying metals may for example be chosen independently of one another from the first or second group of the Periodic Table (IUPAC), preferably from magnesium or from the elements copper, silver, manganese, nickel, magnesium, zinc, chromium, titanium, molybdenum, aluminum or tungsten , Preference is given to silver, copper and manganese. Three- and four-component systems are particularly preferred in addition to two. An exemplary four-substance system is Sn _93.5 Ag _3.5 Cu _0.7 Bi _2.3 (melting point: 219 ° C). In addition to the already mentioned four-component systems, however, systems consisting of more than four individual components for the functional ingredient are also possible.

Of the Use of multicomponent systems is in accordance with the present invention then possible if these systems have a molten phase in a temperature range from 100 to 300 ° C, preferably from 115 to 250 ° C, more preferably form in a temperature range of 130 to 220 ° C. can. Preference is given to compositions in the vicinity of the eutectic Temperature of the mixtures used to the largest possible proportion of molten phase to obtain.

According to the invention, the metals tin and bismuth are present in the organically bound separating and grinding body in suitable proportions for the respective use. It has been found that the ratio of tin to bismuth can be varied within a wide range, without losing the outstanding properties of the separating or grinding bodies according to the invention. So can tin and Bismuth in a ratio of 99: 1 to 1:99, preferably in a ratio of 25: 1 to 1:25.

Of the functional filler is preferably used in particulate form. This is to understand that the functional filler does not form a compact unit, but in separate from each other Particles in the size range mentioned below is present. This allows optimal mixing in the binder and thus optimum wetting of the abrasive with the functional filler guaranteed to the properties of the cutting or grinding discs according to the invention provide. The metals of the functional filler are used as Powder mixtures or used in the form of alloys.

Ideally has the particulate functional filler the tin-bismuth alloys have a particle size of less than 70 microns, preferably less than 60 μm and most preferably less than 45 microns. Preferably, more than 90% of the particles have the particle size listed above, more preferably more than 95%. It has been found that the grain shape of the functional filler has no influence on the grinding result.

According to the invention is in the organically bound release and abrasive body at least one particulate abrasive used. Under an abrasive within the meaning of the invention you have a substance that is responsible for the removal or removal of the material suitable is. Such abrasives are known in the art known. In the present invention, the abrasive is preferred from the group consisting of a diamond, an oxide (for example corundum), a carbide (e.g., silicon carbide), a nitride (e.g., cubic boron nitride), Hard ceramics, metallic or ceramic hard materials and mixtures of which is selected. Other abrasives known in the prior art can be used.

The Size of the particulate abrasive influences the removal rate and the achievable surface or cutting quality. there will the size of the used Abrasivstoffes according to the materials to be machined or the processing (Cutting, grinding, polishing, etc.) are selected, i. each for the to Machining material suitable grain size is usable. Prefers is the particle size of the particulate abrasive of the present invention in a size range of 50 to 1000 μm.

Of the organic according to the invention bonded separating or grinding bodies contains also at least one binder. The binder serves to the Abrasive and the functional filler in the separating or grinding body too enclose and as possible to hold on to for a long time, but also to wear off in such a way that in the wake of the Abspanprozesses the tips of the abrasive constantly free can cut. This is according to the invention Binder an organic binder. Under an organic Binder in the context of the invention is understood to mean a polymeric compound, by conventional Polymerization process can be produced. To the ordinary Polymerization include the polycondensation, the radical polymerization and the anionic or cationic polymerization. A good thing to the grinding task to be adapted binder is a synthetic resin. Preference is given to Phenol resin, in particular a phenol-formaldehyde resin used. Other temperature-resistant polymers as phenolic resins, e.g. Epoxy resins, imides, etc., are considered too used binders.

Of the organically bonded separating or grinding bodies can also in addition to the above ingredients an inactive filler contain. The inactive filler is derived from the group known in the art consisting of carbonates, Clays, oxides, carbides, silicates and mixtures thereof is selected. Examples such inactive fillers are calcium carbonate, kaolin, calcium oxide, aluminosilicates, feldspar, silica and glass.

In addition, can the separating agent according to the invention or abrasive particles one or more reinforcing elements contain. These reinforcing elements can the separating or grinding body an additional Give strength and stiffness. Examples of such reinforcing elements are glass fiber mats, carbon fibers, whiskers and mineral fibers.

Under a separating or grinding body Within the meaning of the invention is any geometric shape of separation or abrasives meant. The shape of the parting or grinding must be on the geometry matched to the workpieces so that all contours can be achieved and no jamming arise. Shapes, triangles, angles, rhombuses, shapes Cylinder, cone, etc. into consideration. Particular preference is given to panes.

The functional fillers according to the invention have effects on the curing process in the production of the separating or grinding bodies. Thus, a changed flow behavior of the bond matrix can be observed during the curing process. In addition, a "fusion" of the fillers with each other and to recognize with the phenol-formaldehyde bond of the binder.

there The investigations of the inventors have revealed that through use the particulate functional according to the invention filler and the associated formation of a molten phase between grinding wheels and workpiece the service life of the separator according to the invention or abrasive article and the protection of the abrasive grain (Abrasivstoffes) and the thermal load of the workpiece is improved.

Of others show effects of the functional according to the invention filler on the separation process. In addition to an endothermic phase transition solid-liquid is the reduction of the frictional resistance by the formation of a liquid Films, i. a molten one Phase, allows. These properties reduce the thermal load of the workpiece, whereby structural changes, Occasion color formation and damaging Residual stresses are reduced to technologically acceptable levels. The molten one Phase protects additionally the abrasive before the occupation with metal and grinding abrasion and thus before reduction of the cut. In addition, the molten phase protects the organic bonding matrix and the workpiece from oxidation. The education the molten one Phase sets over it In addition, the frictional resistance between the grinding wheel and the workpiece down and reduces the separation and shear forces between them.

The Service life of the separating or abrasive particles is compared to standard separators of the prior art with comparable hardness significantly higher, wherein a reduced thermal load of the processed Materials is observed. This leads u.a. to that in further Significant savings in process costs due to lower costs Umrüsthäufigkeit are to be expected.

When Further consequence causes a lower logistical effort (e.g. Stock, delivery frequency) an economic advantage. Thus, the price / performance ratio of corresponding separating or grinding body compared to standard products to a many times higher.

in the general can Separating or grinding body not completely due to the process be used. Dependent on from use Discarded 20 to 50% of the diameter of the separating or grinding body and disposed of. Due to the increased service life of the separating or grinding wheel sinks the amount of waste to be disposed in the range of one third to about half the amount of waste of the separation or abrasive article of the prior art. Because of the higher Lifespan of the separating or grinding body reduces the amount to be disposed of separating and / or grinding dust, which is from the zu Machining material (separating chips) and the abrasion of the used separating or grinding body.

One Another problem that the invention separation or grinding in the Compared to the separating or grinding bodies of the prior art solved have concerns the storage stability of such systems.

Standard partitions with the previously used fillers are due to the hygroscopic properties of the used coming fillers (e.g., manganese chloride) not storage stable.

The possible Storage time of inventive separation or abrasive particles is now based on the resistance of the organic binder.

The mechanical properties, e.g. the mechanical strength of this Standard separation bodies are after a certain storage period due to the influence of air temperature and humidity no longer compliant with requirements. These standard partitions are allowed safety reasons no longer be used, since before reaching a defined Peripheral speed e.g. at a separating or grinding wheel with a disc break is expected.

The Separating or grinding body with the particulate functional according to the invention Fillers are In contrast, unlimited shelf life, since they are resistant to humidity and temperature fluctuations insensitive. this leads to to a much higher level Efficiency of the separating or grinding bodies and at reduced costs.

Of the functional according to the invention filler is also non-toxic due to the materials used. It must therefore neither in the user nor in the manufacture of the separating or grinding body appropriate security measures met or respected.

A another embodiment The present invention relates to a process for the preparation an organically bound release or abrasive article with the particulate functional filler of the invention.

To will be first the abrasive with a liquid resin wetted and then together with a mixture consisting of at least a particulate functional filler and mixed at least one binder. In this mixing process becomes the abrasive with the mixture of binder and particulate functional filler coated, and it becomes a workable plastic abrasive body receive. The production of the mixture of binder and functional filler takes place beforehand in a separate mixer, whereby in this mixing process the powder resin and the filler be homogenized. Optionally, the steps of wetting of the abrasive with a liquid resin and the mixing of the wetted with binder functional filler be repeated with said wetted abrasive.

In a preferred embodiment will be first a mixture of a particulate abrasive and at least a particulate functional filler with a liquid resin wetted. In a subsequent Step is now added to the binder and the resulting Mixture mixed, with a processable abrasive mass is trained. This has the consequence that the bulk of the filler close of the abrasive grain is located.

The abrasive body compositions prepared by the methods described above become dependent on Use case with or without additional reinforcing elements (Glass fiber mats as reinforcement, etc.) with different pressing pressures too Cutting or abrasive blanks pressed and in separate curing chambers cured in a temperature range of 150 ° C to 250 ° C.

The according to the invention or abrasive particles are over a period of 12 to 76 hours, preferably 20 to 60 hours, most preferably cured within 24 hours.

at Cold pressing technology is used for pressing temperatures in the range the room temperature, whereas the hot press technology at temperatures between 150 and 250 ° C, preferably between 150 and 220 ° C and most preferably between 160 and 200 ° C.

According to one The above method can be used as a functional particulate filler Mixtures of metals or their alloys in powder form with a particle size of smaller 70 μm, preferably smaller 60 μm and most preferably less than 45 microns be used.

When Binders are preferably used in the processes of the present invention a mixture of liquid and powdery Phenol resins used.

When liquid resin find phenolic resins, preferably resoles and furfurol and furfural Use.

The according to the method described above separating or abrasives can production-related up to 30 vol .-% of pores contain, in the Usually up to 25 vol.%. Under pores are the enclosed ones cavities the between the abrasive grain (Abbrasivstoff) and the surrounding mixture may be present from binder and functional filler.

The according to the invention or abrasive particles are prepared so that functional fillers (e.g., cryolite and other halogen-, iron- and sulfur-containing fillers) according to the state the technique by the functional fillers according to the invention can be replaced directly without the process for their preparation being changed and modified got to.

In Another aspect of the invention may be in any of the above Additional procedure to the functional filler an inactive filler used in the production of organically bound release or abrasive articles become.

A another embodiment The invention also includes the use of a powder mixture or Alloy of at least two metals as a functional filler in the production of separating or grinding bodies, wherein the at least two metals a molten one Phase in a temperature range of 100 to 300 ° C form.

The present invention will be more fully understood by way of non-limitative examples in the following be shown.

All listed here Cutting wheels were manufactured under standardized conditions and tested to ensure the comparability of the results.

example 1

In In the following investigations 2 formulations A and B were used (see Table 1), which, according to the general manufacturing regulations, as mentioned above, were manufactured.

Table 1

to Assessment of performance the cutting discs compared to a reference cutting disc was the G-factor is calculated and the cutting behavior visually assessed. The power factor (G-factor) is the quotient of separate workpiece surface and used disk surface and is a dimensionless metric.

table 2 contains the standardized separation parameters. For comparative studies Cutting discs with a diameter of 400 mm and a thickness of 4 mm were used. As a workpiece was used stainless steel V500SP or structural steel ST 37. After graduation of the separation test, the G-factor was determined and the material surface of the judged last cut.

Table 2 - Separation parameters

The tests were carried out at the following institution: Test bench: Braun, TS 426 SV Power: 29 kW Max. Speed: 6000 rpm

Tabelle 4 – Ergebnisse der Trennversuche mit der Trennscheibenrezeptur B

Tabelle 5 – Ergebnisse der Trennversuche an Baustahl ST 37 (Rezeptur B)

From the results given below (Tables 3 to 5) it can be seen that the life of conventional cutting wheels under comparable conditions could be significantly improved by using the functional filler according to the invention. In addition, the superior properties compared to the standard cutting discs show Table 3 - Results of separation experiments with the cutting wheel formulation A

Table 4 - Results of the separation tests with the cutting wheel formulation B

Table 5 - Results of separation tests on structural steel ST 37 (formulation B)

Claims (21)

An organically bound separating or grinding body, the includes: a. at least one binder; b. at least a particulate abrasive; c. at least one particulate functional filler; in which the binder is particulate Abrasive and the particulate functional filler surrounds and wherein the functional filler comprises at least two metals which have a molten phase in form a temperature range of 100 to 300 ° C. The organically bound release or abrasive body after Claim 1, which comprises: a) 3 to 20 wt .-%, preferably 10 to 15% by weight of at least one binder; b) 50 to 90% by weight, preferably 60 to 80% by weight of at least one particulate abrasive; c) 1 to 35 wt .-%, preferably 10 to 25 wt .-% of at least one particulate functional filler, and d) optionally up to 15% by weight of an inactive filler. The organically bound release or abrasive body after one of the preceding claims, where the functional filler two to seven metals that forms a molten phase in a temperature range of 100 to 300 ° C form. The organically bound release or abrasive body after one of the preceding claims, the metals being a molten one Phase in a temperature range of 115 to 250 ° C, preferably in a temperature range from 130 to 220 ° C forms. The organically bound release or abrasive body after one of the preceding claims, the molten one Phase has at least one eutectic. The organically bound release or abrasive body after Claim 5, wherein the eutectic has a eutectic temperature in the Range of 130 ° C up to 220 ° C having. The organically bound release or abrasive body after one of the preceding claims, where the functional filler contains at least tin and / or bismuth. The organically bound release or abrasive body after Claims 7, wherein the functional filler is tin and 1 to 6 others Contains metals, the independent from the first or second main group of the periodic table (IUPAC) or Bi, Ti, Cr, Mo, W, Mn, Ni, Cu, Ag, Zn and Al are selected, wherein all of the functional filler metals together are 100 weight percent result. The organically bonded release or abrasive article of claim 7, wherein the functional filler comprises the metal system Sn _x Bi _y and 1 to 5 further metals, where x is an integer between 1 and 99 and y is an integer between 99 and 1 and each of optionally 1 to 5 further metals may be included in a percentage of 0 to 99, wherein all functional filler metals together add up to 100 weight percent. The organically bound release or abrasive body after one of the preceding claims, where the functional filler a particle size of smaller 70 μm, preferred less than 60 μm and most preferably less than 45 microns Has. The organically bound release or abrasive body after one of the preceding claims, the abrasive being selected from the group consisting of diamond, corundum, Silicon carbide, boron nitride, hard ceramics, metallic hard materials or ceramic hard materials and mixtures thereof, is preferred with a grain size of 50 up to 1000 μm selected becomes. The organically bound release or abrasive body after one of the preceding claims, wherein the binder is an organic binder, preferably a Phenol resin, more preferably a phenol-formaldehyde resin. The organically bound release or abrasive body after one of the preceding claims, wherein the inactive filler from the group consisting of alkaline earth carbonates, clays, silicates, oxides, Carbides and mixtures thereof is selected. The organically bound release or abrasive body after Claim 13, wherein the inactive filler is selected from the group consisting of calcium carbonate, kaolin, calcium oxide, aluminosilicates, feldspar, silica and glass is selected becomes. Process for producing an organically bound Separating or grinding body according to one of the claims Claims 1 to 14, comprising: a) mixing at least one Binder having at least one particulate functional filler; b) Wetting the at least one particulate abrasive with a Liquid resin; c) Mixing the mixture from step a) with the liquid resin coated abrasive from step b); d) pressing the Mixture of step c) to a separator or abrasive blank; and e) curing of the abrasive body blank from step d) in a temperature range of 150 ° to 250 ° C over a Period of 12 to 76 hours. The method of claim 15, wherein steps b) and c) repeated at least once prior to the beginning of step d) become. A method of making an organically bonded release or abrasive article according to any one of claims 1 to 14 comprising: a) wetting a mixture of the at least one particulate abrasive and the at least one particulate functional filler with a liquid resin; b) adding the at least one binder; c) mixing the mixture from step b); d) pressing the mixture from step c) into a blank or abrasive blank; and e) curing the abrasive body blank from step d) in a temperature range of 150 ° to 250 ° C over a period of 12 to 76 hours. A method according to any one of claims 15 to 17, wherein the curing of the Cutting discs at temperatures between 150 and 220 ° C and at most preferably between 160 and 200 ° C is performed. Method according to one of claims 15 to 18, wherein as functional particulate filler Mixtures of metals or their alloys in powder form with a particle size of smaller 70 μm, preferred less than 60 μm and most preferably less than 45 microns be used. Method according to one of claims 15 to 19, wherein as a binder a mixture of liquid Phenolic resins and powdery Phenol resins is used. Use of a powder mixture or alloy of at least two metals as a functional filler in the production of separating or grinding bodies, wherein the at least two metals are a molten phase in a temperature range from 100 to 300 ° C form.