EP3928894A1 - Method for producing a green compact and method for processing the green compact into a processing segment - Google Patents

Abstract

Method for producing a green compact for a machining segment (51) from a powdery or granular first matrix material (56) and first hard material particles (57), the machining segment being connected to a base body of a machining tool with an underside (61). The processing segment (51) has a projection (Δ) of the first hard material particles (57) on an upper side (62) opposite the underside (61).

Description

Technical area

The present invention relates to a method for producing a green compact according to the preamble of claim 1 and a method for further processing a green compact into a processing segment according to the preamble of claim 4.

State of the art

Machining tools such as core drill bits, saw blades, abrasive disks and abrasive cutting chains include machining segments that are attached to a tubular, disc or ring-shaped base body, the machining segments being connected to the base body by welding, soldering or gluing. Depending on the processing method of the processing tool, processing segments that are used for core drilling are referred to as drilling segments, processing segments that are used for sawing, as sawing segments, processing segments that are used for ablation, as ablation segments and processing segments that are used for cut-off grinding are referred to as cutting segments .

Processing segments for core drill bits, saw blades, abrasive disks and abrasive cutting chains are made from a matrix material and hard material particles, whereby the hard material particles can be statistically distributed or are arranged according to a defined particle pattern in the matrix material. In the case of machining segments with randomly distributed hard material particles, the matrix material and the hard material particles are mixed, the mixture is poured into a suitable tool mold and processed into the machining segment. In the case of machining segments with hard material particles arranged in a defined manner, a green compact is built up in layers from matrix material, in which the hard material particles are arranged according to the defined particle pattern. In the case of processing segments that are to be welded to the base body of the processing tool, the structure of a processing zone and a neutral zone has proven itself, since some combinations of matrix material and base body cannot be welded. The processing zone turns off a first matrix material and the neutral zone made up of a second matrix material that is different from the first matrix material and can be welded to the base body.

Processing tools, which can be designed as a core drill bit, saw blade, abrasive disc or abrasive cutting chain and are intended for wet processing of concrete materials, are only suitable to a limited extent for dry processing of concrete materials. During the wet processing of concrete materials, an abrasive concrete slurry is created, which supports the processing process and leads to a self-sharpening of the processing segments during processing. The matrix material is removed by the abrasive concrete slurry and new hard material particles are exposed. During the dry machining of concrete materials, no abrasive concrete slurry can form, which can support the machining process. The hard material particles quickly become blunt and the processing rate drops. Due to the lack of concrete sludge, the matrix material wears out too slowly and hard material particles lying deeper cannot be exposed.

For the dry machining of concrete materials, machining segments are required in which the first hard material particles protrude from the first matrix material on the upper side. It applies here that the processing rate that can be achieved with the processing segment is higher, the greater the protrusion of the first hard material particles. The European patent application EP 3 670 041 relates to a method for producing a machining segment from a first matrix material and first hard material particles, which are arranged according to a defined first particle pattern. The method is characterized in that a green compact is produced in which the first hard material particles protrude from the first matrix material on the upper side. The green compact is processed further with a special press die which has depressions in a pressing surface, the arrangement of the depressions corresponding to the defined first particle pattern of the first hard material particles.

The known method for producing a processing segment has the disadvantage that a special press die with depressions in the pressing surface is required for further processing the green compact to form the processing segment, which is used for compression or hot pressing. A special press die is required for each defined first particle pattern according to which the first hard material particles are arranged.

Presentation of the invention

The object of the present invention is to develop a method for producing a green compact for a processing segment, with which processing segments can be produced which have a protrusion of the hard material particles on the upper side. Conventional tool components are to be used both in the production of the green compact and in the further processing of the green compact in the machining segment; the use of special tool components should be avoided.

In the method mentioned at the beginning, this object is achieved according to the invention by the features of independent claim 1. Advantageous further developments are given in the dependent claims.

The method for producing a green compact for a processing segment from a powdery or granular first matrix material and first hard material particles, which are arranged according to a defined particle pattern, is characterized according to the invention in that a powder or granular support material is applied to the first hard material particles, the Support material is different from the first matrix material and the first hard material particles are completely embedded in the support material on an upper side opposite the underside.

The method according to the invention for producing a green compact is characterized in that the green compacts are built up vertically, i.e. the direction of build runs perpendicular to the vertical direction between the bottom and top of the processing segment. The protrusion of the first hard material particles on the upper side of the processing segments is produced with the aid of the powder or granular support material, the support material being different from the first matrix material.

Green compacts, which are produced by means of the method according to the invention for producing a green compact, can be further processed by means of known methods for further processing the green compact into processing segments. The known methods for further processing include compacting the green compact by cold pressing or hot pressing to form a compact, which is further processed by free-form sintering or hot pressing to form the processing segment, or the further processing of the green compact by free-form sintering or hot pressing to form a processing segment.

Green compacts are further processed under the influence of temperature by free-form sintering or hot pressing to form the finished processing segment, the sintering temperature of the first matrix material determining the temperature up to which the green compacts or compacts are heated Need to become. The support material can retain its powdery or granular state during the further processing of the green compact into a processing segment (first variant) or support the sintering process as an infiltrate (second variant).

In a first variant, a support material is applied with a melting temperature that is higher than the sintering temperature of the first matrix material. If the melting temperature of the support material is higher than the sintering temperature of the first matrix material, the support material remains in its powdery or granular state when it is heated and can be easily removed from the finished processing segment after the sintering process.

In a second variant, a support material is applied with a melting temperature that is lower than the sintering temperature of the first matrix material. If the melting temperature of the support material is lower than the sintering temperature of the first matrix material, the support material changes its powdery or granular state when it is heated and liquefies before the first matrix material sintered. The liquid support material can be distributed in the first matrix material and support the sintering process as an infiltrate.

The invention further relates to a method for further processing a green compact, which was produced using the method for producing a green compact, into a processing segment, which is connected with an underside to a base body of a processing tool. In the case of a green compact that was produced using the method according to the invention for producing a green compact, the first hard material particles have a protrusion on the upper side with respect to the first matrix material.

In a first embodiment, the green compact is compressed into a compact under the action of pressure and the compact is then processed further to form a processing segment. The green compact is compressed into a compact under the action of pressure between a first press die, which forms the lower side of the processing segment, and a second press die, which forms the upper side of the processing segment.

The compact is particularly preferably processed further to form the processing segment by free-form sintering or hot pressing. Since the first hard material particles in a green compact produced according to the invention are completely embedded in the powder or granular support material, a conventional second press die can be used during hot pressing to shape the top of the processing segment.

In a second embodiment, the green compact is further processed into a processing segment by free-form sintering or hot pressing. Since the first hard material particles in a green compact produced according to the invention are completely embedded in powder or granular support material, a conventional second press die can be used for hot pressing to shape the top of the processing segment.

Working examples

Embodiments of the invention are described below with reference to the drawing. This should not necessarily represent the exemplary embodiments to scale; rather, the drawing, where useful for explanation, is in a schematic and / or slightly distorted form. It must be taken into account here that various modifications and changes relating to the shape and detail of an embodiment can be made without deviating from the general idea of the invention. The general idea of the invention is not restricted to the exact form or the detail of the preferred embodiment shown and described below or restricted to an object that would be restricted in comparison to the object claimed in the claims. For given measurement ranges, values lying within the stated limits should also be disclosed as limit values and be able to be used and claimed as required. For the sake of simplicity, the same reference symbols are used below for identical or similar parts or parts with an identical or similar function.

FIGN. 1A, B

zwei Varianten eines als Kernbohrkrone ausgebildeten Bearbeitungswerkzeuges;

FIGN. 2A, B

zwei Varianten eines als Sägeblatt ausgebildeten Bearbeitungswerkzeuges;

FIG. 3

ein als Abtragscheibe ausgebildetes Bearbeitungswerkzeug;

FIG. 4

ein als Trennschleifkette ausgebildetes Bearbeitungswerkzeug;

FIGN. 5A-C

einen Grünling (FIG. 5A), der zu einem Pressling verdichtet (FIG. 5B) und zu einem Bearbeitungssegment weiterverarbeitet wird (FIG. 5C);

FIGN. 6A-D

die Herstellung des Grünlings der FIG. 5A mithilfe des erfindungsgemäßen Verfahrens zur Herstellung eines Grünlings; und

FIGN. 7A, B

einen Grünling (FIG. 7A), der zu einem Bearbeitungssegment weiterverarbeitet wird (FIG. 7B).

Show it:

FIGN. 1A, B

two variants of a machining tool designed as a core drill bit;

FIGN. 2A, B

two variants of a machining tool designed as a saw blade;

FIG. 3

a machining tool designed as a removal disk;

FIG. 4th

a machining tool designed as an abrasive cutting chain;

FIGN. 5A-C

a green compact ( FIG. 5A ), which compacts into a pellet ( FIG. 5B ) and is further processed into a processing segment ( FIG. 5C );

FIGN. 6A-D

the production of the green body of the FIG. 5A using the method according to the invention for producing a green compact; and

FIGN. 7A, B

a green compact ( FIG. 7A ), which is further processed into a processing segment ( FIG. 7B ).

FIGN. 1A , B show two variants of a machining tool designed as a core drill bit 10A, 10B. In the FIG. 1A Core drill bit 10A shown is hereinafter referred to as the first core drill bit and the one in FIG. 1B The core drill bit 10B shown is referred to as the second core drill bit, and the first and second core drill bits 10A, 10B are summarized under the term "core drill bit".

The first core drill bit 10A comprises a plurality of machining segments 11A, a tubular base body 12A and a tool holder 13A. The machining segments 11A, which are used for core drilling, are also referred to as drilling segments and the tubular base body 12A is also referred to as the drill shank. The drill segments 11A are firmly connected to the drill shank 12A, for example by screwing, gluing, soldering or welding.

The second core drill bit 10B comprises an annular machining segment 11B , a tubular base body 12B and a tool holder 13B. The annular machining segment 11B, which is used for core drilling, is also referred to as a drill ring and the tubular base body 12B is also referred to as a drill shank. The drill ring 11B is firmly connected to the drill shank 12B, for example by screwing, gluing, soldering or welding.

The core drilling bit 10A, 10B is connected to a core drilling device via the tool holder 13A, 13B and is driven by the core drilling device in a direction of rotation 14 about an axis of rotation 15 during drilling operation. During the rotation of the core drill bit 10A, 10B about the axis of rotation 15, the core drill bit 10A, 10B is moved along a feed direction 16 into a workpiece to be machined, the feed direction 16 running parallel to the axis of rotation 15. The core drill bit 10A, 10B produces a drill core and a borehole in the workpiece to be machined.

The drill shank 12A, 12B is in the exemplary embodiment FIGN. 1A , B formed in one piece and the drill segments 11A and the drill ring 11B are firmly connected to the drill shank 12A, 12B. Alternatively, the drill shaft 12A, 12B can be constructed in two parts from a first drill shaft section and a second drill shaft section, the drill segments 11A or the drill ring 11B being firmly connected to the first drill shaft section and the tool holder 13A, 13B firmly connected to the second drill shaft section. The first and second drill shaft sections are connected to one another via a releasable connecting device. The releasable connecting device is, for example, a plug-in-turn connection, as in FIG EP 2 745 965 A1 or EP 2 745 966 A1 described, trained. The design of the drill shaft as a one-piece or two-piece drill shaft has no influence on the structure of the drill segments 11A or the drill ring 11B.

FIGN. 2A , B show two variants of a machining tool designed as a saw blade 20A, 20B. This in FIG. 2A The saw blade 20A shown is hereinafter referred to as the first saw blade and the one in FIG FIG. 2 B The saw blade 20B shown is referred to as the second saw blade, and the first and second saw blades 20A, 20B are summarized under the term "saw blade".

The first saw blade 20A comprises several machining segments 21A, a disk-shaped base body 22A and a tool holder. The processing segments 21A, which are used for sawing, are also referred to as sawing segments and the disk-shaped base body 22A is also referred to as the main blade. The saw segments 21A are firmly connected to the master blade 22A, for example by screwing, gluing, soldering or welding.

The second saw blade 20B comprises a plurality of machining segments 21B , an annular base body 22B and a tool holder. The processing segments 21B that are used for sawing are also referred to as sawing segments and the ring-shaped base body 22B is also referred to as a ring. The saw segments 21B are firmly connected to the ring 22B, for example by screwing, gluing, soldering or welding.

The saw blade 20A, 20B is connected to a saw via the tool holder and, when the saw is in operation, is driven by the saw in a direction of rotation 24 about an axis of rotation 25. During the rotation of the saw blade 20A, 20B about the axis of rotation 25, the saw blade 20A, 20B is moved along a feed direction, the feed direction running parallel to the longitudinal plane of the saw blade 20A, 20B. The saw blade 20A, 20B creates a saw slot in the workpiece to be machined.

FIG. 3 shows a machining tool designed as a removal disk 30 . The removal disk 30 comprises several machining segments 31, a base body 32 and a tool holder. The processing segments 31 which are used for the removal are also referred to as removal segments and the disk-shaped base body 32 is also referred to as a pot. The removal segments 31 are firmly connected to the pot 32, for example by screwing, gluing, soldering or welding.

The removal disk 30 is connected to a tool device via the tool holder and, in the removal mode, is driven by the tool device in a direction of rotation 34 about an axis of rotation 35 . During the rotation of the removal disk 30 about the axis of rotation 35, the removal disk 30 is moved over a workpiece to be machined, the movement of the runs perpendicular to the axis of rotation 35. The removal disk 30 removes the surface of the workpiece to be machined.

FIG. 4th shows a machining tool designed as an abrasive cutting chain 40. The abrasive cutting chain 40 comprises several processing segments 41, several link-shaped base bodies 42 and several connecting links 43. The processing segments 41, which are used for cut-off grinding, are also referred to as cut-off segments and the link-shaped base bodies 42 are also referred to as drive links.

The drive links 42 are connected via the connecting links 43. In the exemplary embodiment, the connecting links 43 are connected to the drive links 42 via rivet bolts. The rivet bolts allow the drive links 42 to rotate relative to the connecting links 43 about an axis of rotation that runs through the center of the rivet bolts. The machining segments 41 are firmly connected to the drive links 42, for example by screwing, gluing, soldering or welding.

The abrasive cutting chain 40 is connected to a tool device via a tool holder and, during operation, is driven in one direction of rotation by the tool device. During the rotation of the abrasive cutting chain 40, the abrasive cutting chain 40 is moved into a workpiece to be machined.

The production of a processing segment 51, which has hard material particles protruding from the matrix material on its upper side, takes place with the aid of the method according to the invention for producing a green compact and the method for further processing the green compact into a processing segment. In a first stage a green compact 52 is produced, in a second stage the green compact 52 is compacted into a compact 53 and in a third stage the compact 53 is further processed to form the processing segment 51. Alternatively, a green compact can be produced in a first stage, which is further processed into a processing segment in a second stage.

FIGN. 5A-C show the green body 52 ( FIG. 5A ), compact 53 ( FIG. 5B ) and the machining segment 51 ( FIG. 5C ). The machining segment 51 is made up of a machining zone 54 and a neutral zone 55 . The neutral zone 55 is required if the processing segment 51 is to be welded to the base body of a processing tool and the combination of matrix material and base body cannot be welded; In the case of weldable combinations of matrix material and base body, the neutral zone 55 can be omitted.

The processing zone 54 is made up of a powdery or granular first matrix material 56 and first hard material particles 57, which are arranged according to a defined first particle pattern, and the neutral zone 55 is made up of a powdery or granular second matrix material 59 . The term "matrix material" encompasses all materials for the construction of machining segments in which hard material particles can be embedded. Matrix materials can consist of one material or be composed as a mixture of different materials. The term "hard material particles" encompasses all cutting means for machining segments; This includes, above all, individual hard material particles, composite parts made up of several hard material particles and coated or encapsulated hard material particles.

In terms of structure and composition, the machining segment 51 corresponds to the machining segments 11A, 21A, 21B, 31, 41; the machining segment 11B designed as a drill ring differs from the machining segment 51 by its ring-shaped structure. The machining segments can differ from one another in terms of the dimensions and the curvatures of the surfaces. The structure of the machining segments is explained using the machining segment 51 and applies to the machining segments 11A, 21A, 21B, 31, 41.

The machining segment 51 comprises the first hard material particles 57, which are arranged in the first matrix material 56. The "first hard material particles" are the hard material particles of the processing segment 51 that process a subsurface, the number of first hard material particles 57 and the defined first particle pattern according to which the first hard material particles 57 are arranged in the first matrix material 56 on the requirements of the processing segment 51 be adjusted. The first hard material particles 57 generally originate from a particle distribution which is characterized by a minimum diameter, a maximum diameter and an average diameter.

The machining segment 51 is connected to the base body of the machining tool by an underside 61. In the case of machining segments for core drilling and machining segments for ablation, the underside of the machining segments is usually flat, whereas the underside of machining segments for sawing is curved so that the machining segments can be attached to the curved face of the ring-shaped or disk-shaped base body. The in FIG. 5C The machining segment 51 shown, the first hard material particles 57 on an upper side 62 opposite the lower side 61 have a protrusion Δ with respect to the first matrix material 56.

The green compact 52 is built up in the standing structure from the first matrix material 56, the first hard material particles 57, the second matrix material 59 and a powdery support material 63 . The support material 63 is different from the first matrix material 56 and serves to protect the first hard material particles 57 on the upper side 62.

The green compact 52 is compressed under the action of pressure between a first press ram 64, which forms the lower side 61, and a second press ram 65, which forms the upper side 62. The pressing direction of the first press ram 64 and second press ram 65 runs parallel to the direction of construction of the green compact 52. Cold pressing processes or hot pressing processes, for example, are suitable as processes which achieve a pressure effect on the green compact 52. In the case of cold pressing processes, the green compact 52 is exposed exclusively to the action of pressure, while in the case of hot pressing processes, in addition to the action of pressure, the green compact 52 is exposed to a temperature of up to temperatures of approx. 200 ° C.

The compact 53 is processed further to form the processing segment 51 by free-form sintering or hot pressing. In the case of free-form sintering, there is a temperature effect on the compact 53 and in the case of hot pressing there is an effect of pressure and temperature. If the compact 53 is processed further by free-form sintering, the green compact 52 is compressed until the compact 53 essentially has the final geometry of the processing segment 51. If the compact 53 is processed further by hot pressing, the compact 53 is shaped further during hot pressing.

The properties of the support material 63, in particular the melting temperature T _melt , determine the behavior of the support material 63 during further processing. If the melting temperature T _{melt of} the support material 63 is lower than the sintering temperature T _{sinter of} the first matrix material 76, the support material 63 changes its powdery or granular state when heated and liquefies before the first matrix material 56 sintered; the liquid support material 63 can distribute itself in the first matrix material 76 during the sintering process and support the sintering process as an infiltrate. If the melting temperature T _{melt of} the support material is higher than the sintering temperature T _{sinter of} the first matrix material 56, the support material 63 remains in its powdery or granular state during heating and can be easily removed from the finished processing segment after the sintering process.

FIGN. 6A-D show the production of the green compact 52 by means of the method according to the invention for producing a green compact. The green compact 52 is built up from the first matrix material 56, the first hard material particles 57, the second matrix material 59 and the support material 63.

The green body 52 is produced in several steps: In a first step, a second matrix layer 66 of the second matrix material 59 is applied ( FIG. 6A ), wherein the second matrix material 59 can be applied in one layer or in several layers; When producing a green compact for a processing segment without a neutral zone, the application of the second matrix material 59 can be dispensed with. In a second step, a first matrix layer 67 of the first matrix material 56 is applied ( FIG. 6B ), wherein the first matrix material 56 can be applied in one layer or in several layers. In a third step, the first hard material particles 57 are arranged in the first matrix material 56 according to the defined first particle pattern ( FIG. 6C ), wherein the first hard material particles 57 are not completely embedded in the first matrix material 56, but rather have a protrusion Δ at the _top with respect to the first matrix material 56. In a fourth step, a support layer 68 of the support material 63 is applied to the first matrix layer 67 and the first hard material particles 57 ( FIG. 6D ), wherein the support material 63 can be applied in one layer or in several layers.

FIGN. 7A , B show a further processing segment 71 which was produced using the method according to the invention for producing a green compact and the method for further processing the green compact into the processing segment. The machining segment 71 is produced in two stages: In a first stage, a green compact 72 is produced ( FIG. 7A ) and in a second stage the green compact 72 is processed further to form the processing segment 71 ( FIG. 7B ).

The machining segment 71 differs from the machining segment 51 of the FIG. 5C in that the processing segment 71 is made up of a processing zone 74 and has no neutral zone. The processing zone 74 is made up of a powdery or granular first matrix material 76, first hard material particles 77, which are arranged according to a defined first particle pattern, and second hard material particles 78 .

Depending on the wear properties of the first matrix material 76, increased wear of the first matrix material 76 on the side surfaces of the processing segment 71 can occur during the processing of a subsurface with the processing segment 71 due to friction with the subsurface. This wear can be reduced by the second hard material particles 78. The in FIG. 7B In the machining segment 71 shown, the second hard material particles 78 were arranged in the first matrix material 76 according to the defined second particle pattern. Alternatively, the second hard material particles 78 can be added to the first matrix material 76 as randomly distributed particles.

The first hard material particles 77 and second hard material particles 78 generally originate from particle distributions that are defined by a minimum diameter and a maximum diameter and a mean diameter are characterized. In the embodiment of FIGN. 7A , B, the first hard material particles 77 come from a first particle distribution with a first mean diameter and the second hard material particles 78 from a second particle distribution with a second mean diameter, the first mean diameter being larger than the second mean diameter. Alternatively, the first hard material particles 77 and second hard material particles 78 can originate from the same particle distribution and have the same mean diameter.

The machining segment 71 is connected with an underside 81 to the base body of a machining tool. A substrate is processed by first hard material particles 77 which are arranged on an upper side 82 opposite the lower side 81.

The in FIG. 7A The green compact 71 shown is built up from the first matrix material 76, the first hard material particles 77, the second hard material particles 83 and a powder or granular support material 83 . The support material 83 is different from the first matrix material 76 and serves to cover the first hard material particles 77 on the upper side 82. The state of the support material 83 is adapted to the state of the first matrix material 76, ie a powdery support material 83 is used for a powdery first matrix material 76 and a granular support material 83 for a granular first matrix material 76.

The production of the green compact 71 starts with a sequence of a first and second step, the sequence being carried out once or several times; in the case of the green compact 71 of the FIG. 7A the sequence is performed three times. In the first step of the sequence the first matrix material 76 is applied and in the second step of the sequence the second hard material particles 78 are arranged in the first matrix material 76 according to the defined second particle pattern. After the sequence of the first and second step has been carried out three times, an upper layer of the first matrix material 76 can be applied in an intermediate step. The first hard material particles 77 are arranged in the first matrix material 76 according to the defined first particle pattern, the first hard material particles 56 not being completely embedded in the first matrix material 76, but rather having a protrusion over the first matrix material 76. In a third step, the support material 83 is applied, the first hard material particles 77 being completely embedded in the support material 83.

The green compact 71 is processed further to form the processing segment 72 by free-form sintering or hot pressing. In the case of free-form sintering, there is an effect of temperature and in the case of hot pressing there is an effect of pressure and temperature on the green compact 71. The properties of the Support material 83, in particular the melting temperature T _melt , determine the behavior of the support material 83 during further processing. If the melting temperature T _{melt of} the support material 83 is lower than the sintering temperature T _{sinter of} the first matrix material 76, the support material 83 changes its powdery or granular state when it is heated and liquefies before the first matrix material 76 sintered; the liquid support material 83 can distribute itself in the first matrix material 76 during the sintering process and support the sintering process as an infiltrate. If the melting temperature T _{melt of} the support material 83 is higher than the sintering temperature T _{sinter of} the first matrix material 76, the support material 83 remains in its powdery or granular state during heating and can be easily removed from the finished processing segment after the sintering process.

Claims (7)

Method for producing a green compact (52; 72) for a processing segment (11A, 11B; 21A, 21B; 31; 41; 51; 71) from a powdery or granular first matrix material (56; 76) and first hard material particles (57; 77 ), the processing segment being connected with an underside (61; 81) to a base body (12A, 12B; 22A, 22B; 32; 42) of a processing tool (10A, 10B; 20A, 20B; 30; 40), with the steps : ▪ Application of the first matrix material (56; 76) and ▪ Arranging the first hard material particles (57; 77) according to a defined first particle pattern in the first matrix material (56; 76), the first hard material particles (57; 77) being partially embedded in the first matrix material (56; 76), characterized in that a powder or granular support material (63; 83) is applied to the first hard material particles (57; 77), the support material (63; 83) being different from the first matrix material (56; 76) and the first hard material particles ( 57; 77) on an upper side (62; 82) opposite the underside (61; 81) are completely embedded in the support material (63; 83). Method according to Claim 1, characterized in that a support material (63; 83) is applied with a melting temperature (T _melt ) which is higher than the sintering temperature (T _sinter ) of the first matrix material (56; 76). Method according to Claim 1, characterized in that a support material (63; 83) is applied with a melting temperature (T _melt ) which is lower than the sintering temperature (T _sinter ) of the first matrix material (56; 76). Method for further processing the green compact (52; 72), which was produced with the method for producing a green compact according to one of Claims 1 to 3, into a processing segment (51; 71). Method according to Claim 4, characterized in that the green compact (52) is compressed under the action of pressure to form a compact (53) and the compact (53) is then further processed to form the processing segment (51). Method according to Claim 5, characterized in that the compact (53) is further processed by free-form sintering or hot pressing to form the processing segment (51). Method according to Claim 4, characterized in that the green compact (72) is further processed by free-form sintering or hot pressing to form the processing segment (71).

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