EP3670036A1 - Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton - Google Patents

Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton Download PDF

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Publication number
EP3670036A1
EP3670036A1 EP18215798.2A EP18215798A EP3670036A1 EP 3670036 A1 EP3670036 A1 EP 3670036A1 EP 18215798 A EP18215798 A EP 18215798A EP 3670036 A1 EP3670036 A1 EP 3670036A1
Authority
EP
European Patent Office
Prior art keywords
machining
hard material
material particles
segment
matrix material
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.)
Withdrawn
Application number
EP18215798.2A
Other languages
German (de)
English (en)
Inventor
Marcel Sonderegger
Cliff Toldo
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP18215798.2A priority Critical patent/EP3670036A1/fr
Priority to EP19820807.6A priority patent/EP3898036A1/fr
Priority to US17/415,268 priority patent/US20220023945A1/en
Priority to KR1020217019150A priority patent/KR20210105365A/ko
Priority to PCT/EP2019/086158 priority patent/WO2020127631A1/fr
Priority to KR1020217019148A priority patent/KR20210105363A/ko
Priority to EP19827753.5A priority patent/EP3898042A1/fr
Priority to PCT/EP2019/086883 priority patent/WO2020128086A1/fr
Priority to US17/415,300 priority patent/US12017280B2/en
Publication of EP3670036A1 publication Critical patent/EP3670036A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware

Definitions

  • the present invention relates to a method for producing a machining segment according to the preamble of claim 1.
  • Machining tools such as core drill bits, saw blades and abrasive disks, comprise machining segments which are fastened to a tubular, disk-shaped or annular base body, the machining segments being connected to the base body by welding, soldering or gluing.
  • machining segments which are used for core drilling are referred to as drilling segments, machining segments which are used for sawing, saw segments and machining segments which are used for ablation as ablation segments.
  • Machining segments for core drill bits, saw blades and abrasive disks are produced from a matrix material and hard material particles, the hard material particles being able to be statistically distributed or arranged according to a defined particle pattern in the matrix material.
  • the matrix material and the hard material particles are mixed, the mixture is poured into a suitable tool shape and processed further to form the machining segment.
  • a green compact is built up in layers of matrix material, in which the hard material particles are placed in accordance with the defined particle pattern.
  • the processing zone is constructed from a first matrix material and the neutral zone from a second matrix material, which is different from the first matrix material.
  • Machining tools that are designed as a core drill bit, saw blade or cutting disc and are intended for wet machining of concrete materials are only suitable to a limited extent for dry machining of concrete materials.
  • an abrasive concrete sludge is created that supports the machining process and leads to self-sharpening of the machining segments during machining.
  • the matrix material is removed by the abrasive drilling mud and new hard material particles are exposed.
  • no abrasive drilling mud can form that can support the machining process.
  • the hard material particles quickly become dull and the processing rate drops. Due to the lack of concrete sludge, the matrix material wears too slowly and deeper-lying hard material particles cannot be exposed. In known machining tools for wet machining, the matrix material and the hard material particles have similar wear rates.
  • the object of the present invention is to develop a method for producing a machining segment with which machining segments can be produced which are suitable for the dry machining of concrete materials.
  • the processing segment for dry processing concrete materials should have a high processing rate and the longest possible service life.
  • the method for producing a machining segment is characterized in that a green compact is produced in which the first hard material particles have a protrusion compared to the first matrix material. Because the first hard material particles already have a protrusion in the green compact compared to the first matrix material, the first hard material particles also have a protrusion in the finished machining segment compared to the first matrix material. The sharpening of the machining segments can be omitted completely or is at least significantly reduced.
  • Machining segments that are produced using the method according to the invention are produced in a two-stage process: in a first stage, a green body is built up from the first matrix material and the first hard material particles, and in a second stage the green body is made into the machining segment by hot pressing under the influence of temperature and pressure processed further.
  • the method according to the invention enables the production of machining segments with a protrusion of the first hard material particles compared to the first matrix material, the protrusion of at least one first hard material particles being greater than 400 ⁇ m compared to the first matrix material. Machining segments in which at least one of the first hard material particles has an overhang of more than 400 ⁇ m compared to the first matrix material are suitable for the dry machining of concrete materials. The larger the protrusion of the first hard material particles, the higher the machining rate that can be achieved with the machining tool.
  • a press stamp which has depressions in a pressing surface, the arrangement of the depressions in the pressing surface corresponding to the defined particle pattern of the first hard material particles.
  • first hard material particles are used which are enveloped by a shell material, the shell material corresponding to the first matrix material.
  • coated first hard material particles has the advantage that the first hard material particles do not come into direct contact with the press die and the wear of the press die can be reduced.
  • first hard material particles are used which are enveloped by a shell material, the shell material being different from the first matrix material.
  • the use of coated first hard material particles has the advantage that the first hard material particles do not come into direct contact with the press die and the wear of the press die can be reduced.
  • matrix materials with different wear properties can be used. The shell material serves to protect the press ram when the green body is hot pressed and should be able to be removed as quickly as possible in the finished processing segment in order to expose the first hard material particles that work on the substrate.
  • a matrix material with a higher wear rate than the first matrix material can be removed quickly.
  • second hard material particles are admixed to the first matrix material, an average particle diameter of the second hard material particles being smaller than an average particle diameter of the first hard material particles.
  • the second hard material particles can be admixed to the first matrix material as statistically distributed particles, or the second hard material particles are placed in the first matrix material according to a defined second particle pattern. The second hard material particles are placed in particular in the area of the side surfaces of the processing segment.
  • FIGN. 1A , B show two variants of a machining tool designed as a core drill bit 10A , 10B .
  • the core drill bit 10A shown is hereinafter referred to as the first core drill bit and the one shown in FIG FIG. 1B
  • Core drill bit 10B shown is referred to as the second core drill bit, in addition, the first and second core drill bits 10A, 10B are combined 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 a drilling shaft.
  • the drill segments 11A are firmly connected to the drill shaft 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 ring-shaped machining segment 11B which is used for core drilling, is also referred to as a drilling ring and the tubular base body 12B is also referred to as a drilling shaft.
  • the drill ring 11B is firmly connected to the drill shaft 12B, for example by screwing, gluing, soldering or welding.
  • the core drill 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.
  • 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 creates a drill core and a borehole in the workpiece to be machined.
  • the drill shaft 12A, 12B is in the embodiment of the FIGN. 1A , B formed in one piece and the drilling segments 11A or the drilling ring 11B are firmly connected to the drilling shaft 12A, 12B.
  • the drill shaft 12A, 12B can be formed in two parts from a first drill shaft section and a second drill shaft section, the drill segments 11A or the drill ring 11B is fixedly connected to the first drill shaft section and the tool holder 13A, 13B is fixedly 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 detachable connection device is, for example, a plug-turn connection, as in EP 2 745 965 A1 or EP 2 745 966 A1 described, trained.
  • the formation of the drill shaft as a one-part or two-part 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 .
  • the saw blade 20A shown is hereinafter referred to as the first saw blade and that in FIG. 2 B Saw blade 20B shown as the second saw blade, in addition, the first and second saw blades 20A, 20B are summarized under the term "saw blade”.
  • the first saw blade 20A comprises a plurality of 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 saw segments and the disk-shaped base body 22A is also referred to as a master 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 which are used for sawing, are also referred to as saw 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 is driven by the saw in a direction of rotation 24 about an axis of rotation 25 in the sawing operation. 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 being 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. 3rd shows a machining tool designed as a removal disk 30 .
  • the removal disk 30 comprises a plurality of processing 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 is driven in a direction of rotation 34 about an axis of rotation 35 by the tool device in the removal operation. 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 being perpendicular to the axis of rotation 35. The removal disk 30 removes the surface of the workpiece to be machined.
  • FIGN. 4A-C show a machining segment 41 in a three-dimensional representation ( FIG. 4A ), in a view of an upper side of the processing segment 41 ( FIG. 4B ) and in a view of a side surface of the machining segment 41 ( FIG. 4C ).
  • the processing segment 41 corresponds in structure and composition to the processing segments 11A, 21A, 21B, 31;
  • the machining segment 11B designed as a drilling ring differs from the machining segment 41 in its annular structure.
  • the machining segments can differ from one another in the dimensions and in the curvatures of the surfaces.
  • the basic structure of the machining segments according to the invention is explained on the basis of the machining segment 41 and applies to the machining segments 11A, 11B of FIG FIGN. 1A , B, for the machining segments 21A, 21B of the FIGN. 2A , B and for the processing segment 31 of FIG. 3rd .
  • the processing segment 41 is composed of a processing zone 42 and a neutral zone 43 .
  • the neutral zone 43 is required if the machining segment 41 is to be connected to the base body of a machining tool; in the case of machining segments which are connected to the base body, for example by soldering or gluing, the neutral zone 43 can be omitted.
  • the processing zone 42 is constructed from a first matrix material 44 and first hard material particles 45 and the neutral zone 43 is constructed from a second matrix material 46 without hard material particles.
  • hard material particles include, in particular, individual hard material particles, composite parts made of several hard material particles and coated or encapsulated hard material particles.
  • matrix material includes all materials for the construction of machining segments summarized, in which hard material particles can be embedded. Matrix materials can consist of one material or be a mixture of different materials.
  • Machining segments that are produced with the method according to the invention for producing a machining segment have a layer with first hard material particles 45, further layers with first hard material particles 45 are not provided.
  • the “first hard material particles” refer to the hard material particles of the machining segment 41 which, after the machining segment has been produced, have an overhang on the upper side compared to the first matrix material 44. Hard material particles that are completely embedded in the first matrix material 44 in the machining segment 41 do not fall under the definition of the first hard material particles.
  • the machining segment 41 is connected to the base body of the machining tool with an underside 47 .
  • the underside of the machining segments is generally flat, whereas the underside of machining segments for sawing has a curvature in order to be able to fasten the machining segments to the curved end face of the annular or disk-shaped base body.
  • the machining segment 41 is connected to the base body of the machining tool with an underside 47 .
  • the underside of the machining segments is generally flat, whereas the underside of machining segments for sawing has a curvature in order to be able to fasten the machining segments to the curved end face of the annular or disk-shaped base body.
  • the first hard material particles 45 are arranged in the first matrix material 44 according to a defined particle pattern ( FIG. 4B ) and have an overhang T 1 with respect to the first matrix material 44 on an upper side 48 of the machining segment 41 opposite the lower side 47.
  • the processing segment 41 comprises a number of 9 first hard material particles 45 which protrude on the top 48.
  • the number of first hard material particles 45 and the defined particle pattern in which the first hard material particles 45 are arranged in the first matrix material 44 are adapted to the requirements of the machining segment 41.
  • the first hard material particles 45 generally originate from a particle distribution which is characterized by a minimum diameter, a maximum diameter and an average diameter.
  • the protrusions of the first hard material particles 45 can vary accordingly.
  • all of the first hard material particles 45 have a protrusion of more than 400 ⁇ m compared to the surrounding first matrix material 44.
  • FIGN. 1A B FIGN. 2A Federation FIG. 3rd
  • the processing tools shown according to the invention which are provided for the processing of concrete materials, have a defined direction of rotation.
  • a distinction can be made between a front area and a rear area of a hard material particle 45. Due to its geometry with a flat underside, the machining segment 41 is suitable as a drilling segment for the core drill bit 10A.
  • the direction of rotation 14 of the core bit 10A defines a front area 51 and a rear area 52 .
  • the processing of concrete materials takes place in the front areas 51 of the first hard material particles 45 and the processing rate essentially depends on the size of the protrusion of the first hard material particles in the front areas 51.
  • the first hard material particles 45 have a front projection T front in the front area 51 and a back projection T back in the rear area, which correspond in the exemplary embodiment.
  • the first hard material particles 45 can have different front projections T front and rear projections T back .
  • the machining segment 41 is produced in two stages using the method according to the invention: in a first stage, a green body 53 is produced and in a second stage the green body 53 is further processed into the machining segment 41.
  • FIG. 5 shows the green compact 53 and the processing segment 41.
  • the green compact 53 is constructed from the first matrix material 44 and the first hard material particles 45.
  • FIGN. 6A-C show some tool components that are used in the manufacture of the machining segment 41 using the inventive method.
  • the tool components comprise a lower stamp 61 , a die 62 and an upper stamp 63 , the lower stamp 61 also being referred to as the first press stamp and the upper stamp 63 as the second press stamp.
  • FIGN. 6B and 6C show the upper stamp 63 in detail.
  • the green body 53 is built up in the die 62 with a cross-sectional area that corresponds to the desired geometry of the green body 53.
  • the die 62 has a first opening on the underside, into which the lower punch 61 can be moved, and a second opening on the top, into which the upper punch 63 can be moved.
  • the upper stamp 63 points recesses 64 in the pressing surface, the arrangement of which corresponds to the defined particle pattern of the first hard material particles 45.
  • the green compact 53 is built up from the bottom.
  • the first matrix material 44 is filled into the die 62 using a filling shoe until the desired filling height is reached.
  • the first hard material particles 45 are placed in the first matrix material 44 in accordance with the defined particle pattern in the surface of the first matrix material 44 and embedded in the first matrix material 44 to a desired embedding depth.
  • the finished green compact 53 is further processed under the action of temperature and pressure with the aid of the lower punch 61 and the upper punch 63 to form the processing segment 41.
  • machining segments 41 are produced in which the green compacts 53 already have a protrusion of the first hard material particles 45 with respect to the first matrix material 44.
  • the green compact 53 is hot-pressed to the processing segment 41 with the aid of the special upper punch 63 in a pressing direction perpendicular to the cross-sectional area of the green compact 53.
  • the depressions 64 in the pressing surface of the upper punch 63 have an arrangement which corresponds to the defined particle pattern of the first hard material particles 45.
  • the processing segments 41 can be produced which are suitable for the dry processing of concrete materials.
  • first hard material particles 45 With direct contact between the first hard material particles 45 and the depressions 64 of the upper punch 63, increased wear of the upper punch 63 can occur. In order to reduce the wear of the upper punch 63, direct contact of the first hard material particles 45 with the upper punch 63 should be avoided.
  • coated first hard material particles 45 is suitable as a measure.
  • coated first hard material particles has the advantage that the first hard material particles 45 do not come into direct contact with the upper punch 63 and the wear of the upper punch 63 can be reduced.
  • the first matrix material 44 can be used as the shell material for the first hard material particles 45.
  • a second matrix material can be used as the shell material for the first hard material particles 45, the second matrix material being different from the first matrix material 44.
  • matrix materials with different wear properties can be used.
  • the shell material serves to protect the upper punch 63 during compaction and should be able to be removed as quickly as possible in the finished machining segment in order to expose the first hard material particles 45 which process the concrete material.
  • the second hard material particles can be admixed to the first matrix material 44 as statistically distributed particles, or the second hard material particles are placed in the first matrix material 44 according to a defined second particle pattern. The second hard material particles are placed in particular in the area of the side surfaces of the processing segment 41.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP18215798.2A 2018-12-21 2018-12-21 Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton Withdrawn EP3670036A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP18215798.2A EP3670036A1 (fr) 2018-12-21 2018-12-21 Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton
EP19820807.6A EP3898036A1 (fr) 2018-12-21 2019-12-19 Procédé pour fabriquer un segment d'usinage pour l'usinage à sec de matériaux de béton
US17/415,268 US20220023945A1 (en) 2018-12-21 2019-12-19 Method for producing a machining segment for the dry machining of concrete materials
KR1020217019150A KR20210105365A (ko) 2018-12-21 2019-12-19 콘크리트 재료를 건식 가공하기 위한 가공 세그먼트를 생산하기 위한 방법
PCT/EP2019/086158 WO2020127631A1 (fr) 2018-12-21 2019-12-19 Procédé pour fabriquer un segment d'usinage pour l'usinage à sec de matériaux de béton
KR1020217019148A KR20210105363A (ko) 2018-12-21 2019-12-21 그린 본체 생산 방법 및 그린 본체를 콘크리트 재료의 건식 가공을 위한 가공 세그먼트로 추가적으로 프로세싱하기 위한 방법
EP19827753.5A EP3898042A1 (fr) 2018-12-21 2019-12-21 Procédé pour fabriquer une ébauche crue et procédé pour transformer l'ébauche crue en segment d'usinage pour l'usinage à sec de matériaux de béton
PCT/EP2019/086883 WO2020128086A1 (fr) 2018-12-21 2019-12-21 Procédé pour fabriquer une ébauche crue et procédé pour transformer l'ébauche crue en segment d'usinage pour l'usinage à sec de matériaux de béton
US17/415,300 US12017280B2 (en) 2018-12-21 2019-12-21 Method for producing a green body and method for further processing the green body into a machining segment for the dry machining of concrete materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18215798.2A EP3670036A1 (fr) 2018-12-21 2018-12-21 Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton

Publications (1)

Publication Number Publication Date
EP3670036A1 true EP3670036A1 (fr) 2020-06-24

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP18215798.2A Withdrawn EP3670036A1 (fr) 2018-12-21 2018-12-21 Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton
EP19820807.6A Pending EP3898036A1 (fr) 2018-12-21 2019-12-19 Procédé pour fabriquer un segment d'usinage pour l'usinage à sec de matériaux de béton

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19820807.6A Pending EP3898036A1 (fr) 2018-12-21 2019-12-19 Procédé pour fabriquer un segment d'usinage pour l'usinage à sec de matériaux de béton

Country Status (4)

Country Link
US (1) US20220023945A1 (fr)
EP (2) EP3670036A1 (fr)
KR (1) KR20210105365A (fr)
WO (1) WO2020127631A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670040A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton
EP3670035A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement destiné au forage à sec de matériaux de béton
EP3670041A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement pour le traitement à sec de matériaux de béton
EP3670037A1 (fr) * 2018-12-21 2020-06-24 Hilti Aktiengesellschaft Procédé de fabrication d'un segment de traitement pour le traitement à sec des matériaux de béton
US20220055248A1 (en) * 2018-12-21 2022-02-24 Hilti Aktiengesellschaft Method for Producing a Green Body and Method for Further Processing the Green Body Into a Machining Segment for the Dry Machining of Concrete Materials

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US5620489A (en) * 1994-04-08 1997-04-15 Ultimate Abrasive Systems, L.L.C. Method for making powder preform and abrasive articles made thereform
US20120005966A1 (en) * 2010-07-06 2012-01-12 Baker Hughes Incorporated Methods of forming inserts and earth-boring tools
EP2745966A1 (fr) 2012-12-21 2014-06-25 HILTI Aktiengesellschaft Trépan doté d'une section de coupe interchangeable
EP2745965A1 (fr) 2012-12-21 2014-06-25 HILTI Aktiengesellschaft Trépan doté d'une section de coupe interchangeable
US20170361388A1 (en) * 2014-12-22 2017-12-21 Hilti Aktiengesellschaft Method for Manufacturing a Continuous Drill Ring for a Core Drill Bit
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KR20210105365A (ko) 2021-08-26
EP3898036A1 (fr) 2021-10-27

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