EP2098317A1 - Procédé et dispositif de fabrication d'une pièce moulée en poudre de métal - Google Patents

Procédé et dispositif de fabrication d'une pièce moulée en poudre de métal Download PDF

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Publication number
EP2098317A1
EP2098317A1 EP07122237A EP07122237A EP2098317A1 EP 2098317 A1 EP2098317 A1 EP 2098317A1 EP 07122237 A EP07122237 A EP 07122237A EP 07122237 A EP07122237 A EP 07122237A EP 2098317 A1 EP2098317 A1 EP 2098317A1
Authority
EP
European Patent Office
Prior art keywords
punch
compact
die assembly
assembly
filling
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Withdrawn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
EP07122237A
Other languages
German (de)
English (en)
Inventor
Peter Kunz
Markus Eismann
Stefan Haltner
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.)
OSTERWALDER AG
Original Assignee
OSTERWALDER 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 OSTERWALDER AG filed Critical OSTERWALDER AG
Priority to EP07122237A priority Critical patent/EP2098317A1/fr
Publication of EP2098317A1 publication Critical patent/EP2098317A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
    • B30B15/306—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds for multi-layer articles
    • 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
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • 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
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/027—Particular press methods or systems
    • 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
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • B22F2003/033—Press-moulding apparatus therefor with multiple punches working in the same direction

Definitions

  • the present invention relates to a method of producing a metal powder compact having a top punch-driven drivable powder press drivable lower punch assembly and a die assembly which forms the mold cavity in which the metal powder is filled into said mold cavity and thereafter the upper die is molded to form the compact Stamp assembly and the lower punch assembly are pressed against each other, and to an apparatus for performing the method.
  • compacts of various shapes can be produced on the corresponding powder presses, which are hydraulically or mechanically drivable.
  • the corresponding powder in the mold which is formed by a die assembly and by an upper and a lower punch assembly, filled, then the pressing operation is carried out, with the possibility of separate method of the individual stamp members of the lower punch assembly and / or the upper Stamp arrangement in the compact different gradations can be achieved.
  • filling volume for the individual areas of the compact and the desired thickness of these areas of the finished pressed compact must be optimally matched to each other, so that a finished pressed compact over the entire body has a uniform material density.
  • the object of the present invention is therefore to provide a method by which compacts with more complex shapes can be carried out in a pressing operation, in particular when these compacts must be provided with transverse openings, and with which compacts can be obtained, the desired quality which can save investment, operating and maintenance costs.
  • the solution of this object is achieved in that a lower part of the die assembly, which is in the filling position is filled with a first filling shoe with metal powder, that after the filling of the lower part of the die assembly, an upper part of the die assembly with retracted into the mold cavity Cross stamping is lowered onto the lower part of the die assembly, that the lowered on the lower part of the die assembly upper part of the die assembly is filled with a second filling shoe with powder that executed after the completion of the filling process, the pressing operation and the compact is pressed, then that Querst Zi be moved back from the mold cavity filled by the compact and from the compact and that subsequently the upper part of the die assembly and the lower part of the die assembly from the compact, which is held by the punch assemblies are withdrawn.
  • the upper part of the die assembly is withdrawn by the process from the lower part of the die assembly away from the compact while the compact is held by the upper die assembly, and thereafter the lower part of the die assembly is machined by moving the lower part of the die assembly Die assembly removed from the upper part of the die assembly away from the compact, while the compact is held by the lower punch assembly.
  • a further object of the invention is to design a device for carrying out said method in such a way that this method can be carried out in an optimum manner, which according to the invention takes place in that the first filling shoe is displaceably arranged along a first filling level for the lower part of the die arrangement, and that the second filling shoe is slidably disposed along a second filling level for the upper part of the die assembly.
  • the mold cavity can be optimally filled in two stages.
  • the transverse punches projecting into the upper part of the die arrangement are, via drives, moved from the position extended from the mold cavity into a position retracted into the mold cavity Position and vice versa brought, whereby, since these drives are controlled by the machine control, an optimal pressing operation is guaranteed.
  • the drives for the transverse punch are hydraulically actuated, whereby a simple control of these drives can be done.
  • a further advantageous embodiment of the device is that the upper punch assembly and / or the lower punch assembly is constructed of one or more punch elements, depending on what is to be produced for a compact.
  • the stamp elements of the upper punch assembly and the punch members of the lower punch assembly are each separately driven.
  • FIG. 1A to Fig. 1C Spatial representations and a sectional view of an example of a compact, as it can be produced by the inventive method;
  • FIG. 2 in a spatial representation and partly in section, the upper punch assembly and the lower punch assembly with the die assembly and the filling shoes, which for the production of the compact according to the FIGS. 1A to 1C serve;
  • FIGS. 3 to 15 in a schematic representation of the upper punch assembly, the lower punch assembly, the die assembly and the Filling shoes each shown in a position during the performance of a pressing operation;
  • Fig. 16A and Fig. 16B a schematic representation of a hydraulic drive for the displacement of a cross bar, arranged on a die plate.
  • FIGS. 1A to 1C shows an example of a compact, as it can be produced by the method according to the invention and a device designed to carry out this method.
  • This compact 1 has a lower cylindrical part 2 and an attached upper cylindrical part 3, which has a smaller diameter than the cylindrical part 2.
  • the compact 1 is by a coaxial penetrated cylindrical bore 5.
  • the upper cylindrical part 3 four radially extending transverse openings 6 are provided, which open into the cylindrical bore 5 and which have a rectangular cross-sectional shape.
  • this compact 1 has four further holes 7, which are aligned parallel to the cylindrical bore, from which holes 7 each have a corresponding transverse opening 6 is penetrated.
  • this compact would be 1, as in the FIGS. 1A to 1C has been pressed in two parts, namely the lower cylindrical part 2 on its own and the upper cylindrical part 3 on its own, the separation of these two parts being placed in a plane formed by the lower planes of the transverse openings 6, as indicated by the dot-dash line 8 in FIG Fig. 1C is shown.
  • the two pressed parts would then, as previously described, be soldered at the joints and would have been joined together during the sintering process.
  • FIGS. 1A to 1C shown compact 1 can be produced in a single pressing operation, will now be described below.
  • Out Fig. 2 an upper punch assembly 9, a lower punch assembly 10, and a die assembly 11 are shown.
  • These arrangements 9 to 11 are used in a known, not shown manner in a known powder press, of course, and preferably these arrangements 9 to 11 used in a known adapter, which can then be used according to the powder press.
  • the upper punch assembly 9 comprises an inner punch 12 and a punch ring 13.
  • the inner punch 12 and the punch ring 13 are separately driven by the powder press.
  • the inner punch 12 is equipped on the die side with a centrally arranged blind bore 14.
  • the inner punch 12 additionally has four through holes 15, which run parallel to the punch axis, represented by the dot-dash line 19.
  • the lower punch assembly 10 is composed of the following punch elements: an outer lower punch 16, an inner lower punch 17 and a central mandrel 18.
  • the outer lower punch 16, the inner punch 17 and the central mandrel 18 are hollow cylindrical or cylindrical, and coaxial with the press axis 19 arranged.
  • four pins 20 are provided which are slidably inserted into the inner lower punch 17 such that they are aligned with the holes 15 of the upper punch assembly 9.
  • the pins 20 inserted into the inner lower punch 17 are, like the outer lower punch 16, the inner lower punch 17 and the central mandrel 18 drivable separately in a known manner by the powder press.
  • the die assembly 11 comprises an upper part 21 and a lower part 22.
  • the lower part 22 is arranged coaxially around the lower punch assembly 10, also along the pressing axis 19 in a known, not shown manner driven by the powder press.
  • the upper part 21 of the die assembly is formed as a hollow cylindrical ring, in each of which four transverse punches 23 are mounted radially displaceable in corresponding recesses. Each of these transverse punches 23 is slidably drivable by a hydraulic drive 24, which hydraulic drive 24 is shown only schematically, a detailed description follows later.
  • a plate 25 the upper surface of which is flush with the annular surface of the lower part 22 of the die assembly, forms a plane, on which an only schematically illustrated first filling shoe 26 is arranged movable.
  • Another plate 27 is disposed at the level of the annular surface of the upper part 21 of the die assembly 11 so that its surface also forms a plane with this annular surface.
  • a second filling shoe 28 is also slidably disposed, which is also shown only schematically.
  • FIG. 2 It can be seen a finished pressed compact 1, as in the Fig. 1A to 1C is shown, which rests on the lower punch assembly 10 and is located in the ejection position. Such compacts 1 can by the arrangement, as shown in Fig. 2 is shown pressed.
  • the upper punch assembly 9 and the lower punch assembly 10 are in the open filling position, as is apparent Fig. 3 is apparent.
  • the upper part 21 of the die with the further plate 27 and the second filling shoe 28 are in the raised positions.
  • the outer lower punch 16 and the inner lower punch 17 are moved downwards so far that within the lower part 22 of the die, a lower part of the mold cavity 29 is formed, which can accommodate the exact predetermined volume of powder.
  • the pins 20 and the central mandrel 18 of the lower punch assembly 10 are so far advanced that its surface is flat with the filling plane formed by the plate 25, in which there is also the circular cylindrical surface of the lower part 22 of the die.
  • the first filling shoe 26 is moved along this plane formed by the plate 25 and passes over the mold cavity 29 located within the lower part 22 of the die and fills it completely with powder.
  • the first filling shoe 26 is then moved back along the plate 25 as shown in FIG Fig. 4 is shown.
  • the lower part 22 of the die assembly with the plate 25 is slightly raised, at the same time the pins 20 by a predetermined amount and the central mandrel 18 by a predetermined Mass raised, driven by the individual drives of the powder press.
  • the upper part 21 of the die assembly is lowered together with the further plate 27 and the second filling shoe 28 until it rests on the lower part 22 of the die assembly, as is apparent from Fig. 6 is apparent.
  • the pins 20 penetrate the corresponding holes provided in the transverse punches 23.
  • the outer lower punch 16 and the inner lower punch 17 are then raised by a predetermined amount until the surface of the already filled powder in the lower part of the mold cavity 29 at least to the underside of the transverse punch 23 abuts, so that the areas below the transverse punch 23 in the lower part of the mold cavity 29 are completely filled with powder, the powder which is located above the outer lower punch 16 is already slightly pressed by abutment against the upper part 21 of the die assembly.
  • the pins 20 are moved so that their front surface is flat with the plane formed by the further plate 27, accordingly, the central mandrel 18 is moved to the same level as that Fig. 7 is apparent.
  • the upper portion of the mold cavity 29 can be filled with powder, for which purpose the second filling shoe 28 is moved along the plate 27 via the upper part 21 of the die assembly, as can be seen from Fig. 8 is apparent.
  • the upper region of the mold cavity 29 is completely filled with the powder.
  • Fig. 9 how out Fig. 9 can be seen, then the second filling shoe 28 from the filling of the region of the upper part 21 of the die assembly scaled back.
  • the upper punch assembly 9 is moved down until the punch ring 13 comes to rest on the surface of the upper part 21 of the die assembly and the surface of the inner punch 12 closes the mold cavity 29 and rests on the filled powder.
  • Fig. 10 As can be seen, the inner punch 12 of the upper die assembly 9, the outer die 16 and the inner die 17 are moved against each other, each die travels in a known manner a precisely predetermined feed path during a certain time interval.
  • the pins 20 are in this case moved so that they penetrate into the holes 15 of the inner punch 12.
  • the central mandrel 18 is also moved so that it projects into the blind bore 14 of the inner punch 12.
  • the pressing forces of the individual punches are measured here in a known manner.
  • the pins 20 are completely withdrawn from the compact 1 and the transverse punches 23.
  • the transverse punches 23 are withdrawn via the hydraulic drives 24 from the compact, the compact 1 is slightly relieved by a predetermined amount, which is achieved by corresponding withdrawal movements of the upper punch 9, the outer lower punch 16 and the inner lower punch 17.
  • the upper punch assembly 9 moves back to the raised position, the outer lower punch 16 is advanced so far that it comes to lie with the surface of the inner lower punch in a plane, the compact 1 is ejected, as in Fig. 15 is shown.
  • the finished pressed compact 1 is then free on the outer die 16 and can be carried away in a known manner, which can for example be done automatically via a robot, the pressing process is then completed, the lower punch assembly 10 is moved back to the filling position, as in Fig. 3 is shown, the press is ready to carry out another pressing operation.
  • the configuration of the upper punch assembly 9 and the lower punch assembly 10 can be configured differently by appropriate selection of number and shape of stamp elements, in particular, the upper punch assembly 9 may also have a plurality of punch elements , depending on the shape of the compact to be produced. It would even be conceivable that even a central part of a die is used, so that the die would be in three parts and three Medvorgangszyklen could be performed with the appropriate design of the device, which even in this middle die even cross slide could be attached.
  • the Figures 16A and 16B show the die plate 30 for receiving the corresponding upper part 21 of the die assembly.
  • This hydraulic drive 24 has a piston rod 31 in a known manner, with attached thereto piston 32, which are acted upon in the cylinder 33 on both sides with pressure medium and thus can be moved back and forth.
  • guide and coupling elements 34 are attached to the hydraulic drive 24, to which the respective transverse punch 23 can be coupled, and is correspondingly displaceable.
  • This hydraulic drive 24 is connected to the hydraulic unit of the powder press, and is controlled in a known manner via the machine control.
  • four hydraulic drives 24 are of course arranged on the corresponding die plate 30 for producing the compact 1 according to the previously described method.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
EP07122237A 2007-12-04 2007-12-04 Procédé et dispositif de fabrication d'une pièce moulée en poudre de métal Withdrawn EP2098317A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07122237A EP2098317A1 (fr) 2007-12-04 2007-12-04 Procédé et dispositif de fabrication d'une pièce moulée en poudre de métal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07122237A EP2098317A1 (fr) 2007-12-04 2007-12-04 Procédé et dispositif de fabrication d'une pièce moulée en poudre de métal

Publications (1)

Publication Number Publication Date
EP2098317A1 true EP2098317A1 (fr) 2009-09-09

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033805B2 (en) 2007-11-27 2011-10-11 Kennametal Inc. Method and apparatus for cross-passageway pressing to produce cutting inserts
US8062014B2 (en) 2007-11-27 2011-11-22 Kennametal Inc. Method and apparatus using a split case die to press a part and the part produced therefrom
EP2514541A3 (fr) * 2011-04-20 2013-11-20 HILTI Aktiengesellschaft Dispositif et procédé de fabrication d'un compact vert à partir d'une matière active sous forme de poudre ou de granulés
DE102012024503A1 (de) * 2012-12-14 2014-06-18 Dorst Technologies Gmbh & Co. Kg Keramik- und/oder Metallpulver-Pressenanordnung zum Pressen eines Formteils
WO2014090226A1 (fr) * 2012-12-14 2014-06-19 Dorst Technologies Gmbh & Co. Kg Dispositif de compression de poudre céramique et/ou métallique pour le moulage par compression d'une pièce
DE102013109157A1 (de) * 2013-08-23 2015-02-26 Fette Compacting Gmbh Presse zur Herstellung von Presslingen aus pulverförmigem Material
AT515961A1 (de) * 2014-06-18 2016-01-15 Miba Sinter Austria Gmbh Verfahren und Vorrichtung zum Pressen eines Grünlings
WO2018167127A1 (fr) * 2017-03-14 2018-09-20 Gkn Sinter Metals Engineering Gmbh Procédé pour la fabrication d'une ébauche à l'aide d'un outil de presse, outil de presse, ébauche ainsi que pièce frittée

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800684A (en) * 1953-07-28 1957-07-30 Ncr Co Apparatus for forming powdered metal parts
US5364253A (en) * 1992-05-14 1994-11-15 Matsushita Electric Industrial Co., Ltd. Magnetic circuit component molding device
JPH0740096A (ja) * 1993-08-03 1995-02-10 Nissan Motor Co Ltd 粉末成形品のアンダカット形状成形方法及びその成形装置
JPH07124792A (ja) * 1993-11-02 1995-05-16 Nissan Motor Co Ltd 粉末成形方法および粉末成形装置
DE19508952A1 (de) * 1995-03-13 1996-09-19 Schwaebische Huettenwerke Gmbh Vorrichtung zur Erzeugung eines Formteils und entsprechendes Formteil
JPH10146695A (ja) * 1996-11-13 1998-06-02 Mitsubishi Materials Corp 横穴付粉末成形品の製造方法及び装置
JPH11300497A (ja) * 1998-04-21 1999-11-02 Nissan Motor Co Ltd 粉末成形装置及びその駆動方法
WO2001074519A1 (fr) * 2000-04-03 2001-10-11 Pataracchia F George Filiere multifonction fendue pour poudre metallique
US6318986B1 (en) * 1993-11-24 2001-11-20 Stackpole Limited Undercut split die
US20050269729A1 (en) * 2004-06-02 2005-12-08 Sms Meer Gmbh Powder press
WO2006080002A1 (fr) * 2005-01-27 2006-08-03 Iscar Ltd. Procede et appareil de fabrication de pieces rapportees coupantes
EP1852247A2 (fr) * 2006-05-02 2007-11-07 Fette GmbH Presse destinée à la fabrication de comprimés en matériau poudreux

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800684A (en) * 1953-07-28 1957-07-30 Ncr Co Apparatus for forming powdered metal parts
US5364253A (en) * 1992-05-14 1994-11-15 Matsushita Electric Industrial Co., Ltd. Magnetic circuit component molding device
JPH0740096A (ja) * 1993-08-03 1995-02-10 Nissan Motor Co Ltd 粉末成形品のアンダカット形状成形方法及びその成形装置
JPH07124792A (ja) * 1993-11-02 1995-05-16 Nissan Motor Co Ltd 粉末成形方法および粉末成形装置
US6318986B1 (en) * 1993-11-24 2001-11-20 Stackpole Limited Undercut split die
DE19508952A1 (de) * 1995-03-13 1996-09-19 Schwaebische Huettenwerke Gmbh Vorrichtung zur Erzeugung eines Formteils und entsprechendes Formteil
JPH10146695A (ja) * 1996-11-13 1998-06-02 Mitsubishi Materials Corp 横穴付粉末成形品の製造方法及び装置
JPH11300497A (ja) * 1998-04-21 1999-11-02 Nissan Motor Co Ltd 粉末成形装置及びその駆動方法
WO2001074519A1 (fr) * 2000-04-03 2001-10-11 Pataracchia F George Filiere multifonction fendue pour poudre metallique
US20050269729A1 (en) * 2004-06-02 2005-12-08 Sms Meer Gmbh Powder press
WO2006080002A1 (fr) * 2005-01-27 2006-08-03 Iscar Ltd. Procede et appareil de fabrication de pieces rapportees coupantes
EP1852247A2 (fr) * 2006-05-02 2007-11-07 Fette GmbH Presse destinée à la fabrication de comprimés en matériau poudreux

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8062014B2 (en) 2007-11-27 2011-11-22 Kennametal Inc. Method and apparatus using a split case die to press a part and the part produced therefrom
US8033805B2 (en) 2007-11-27 2011-10-11 Kennametal Inc. Method and apparatus for cross-passageway pressing to produce cutting inserts
EP2514541A3 (fr) * 2011-04-20 2013-11-20 HILTI Aktiengesellschaft Dispositif et procédé de fabrication d'un compact vert à partir d'une matière active sous forme de poudre ou de granulés
US9399255B2 (en) 2011-04-20 2016-07-26 Hilti Aktiengesellschaft Device and method for producing a green compact from a powdered or granular material
CN102744904B (zh) * 2011-04-20 2016-08-31 喜利得股份公司 用于由粉末状或颗粒状材料制造预制坯的装置和方法
DE102012024503A1 (de) * 2012-12-14 2014-06-18 Dorst Technologies Gmbh & Co. Kg Keramik- und/oder Metallpulver-Pressenanordnung zum Pressen eines Formteils
WO2014090226A1 (fr) * 2012-12-14 2014-06-19 Dorst Technologies Gmbh & Co. Kg Dispositif de compression de poudre céramique et/ou métallique pour le moulage par compression d'une pièce
USRE47007E1 (en) 2013-08-23 2018-08-28 Fette Compacting Gmbh Press for producing pellets from powdered material
DE102013109157A1 (de) * 2013-08-23 2015-02-26 Fette Compacting Gmbh Presse zur Herstellung von Presslingen aus pulverförmigem Material
EP2839950A3 (fr) * 2013-08-23 2015-03-04 Fette Compacting GmbH Presse de fabrication de pièces pressées en matériau poudreux
US9138954B2 (en) 2013-08-23 2015-09-22 Fette Compacting Gmbh Press for producing pellets from powdered material
DE102013109157B4 (de) * 2013-08-23 2016-06-09 Fette Compacting Gmbh Presse zur Herstellung von Presslingen aus pulverförmigem Material
AT515961A1 (de) * 2014-06-18 2016-01-15 Miba Sinter Austria Gmbh Verfahren und Vorrichtung zum Pressen eines Grünlings
AT515961B1 (de) * 2014-06-18 2017-04-15 Miba Sinter Austria Gmbh Verfahren und Vorrichtung zum Pressen eines Grünlings
US10646922B2 (en) 2014-06-18 2020-05-12 Miba Sinter Austria Gmbh Method and device for pressing a green compact
WO2018167127A1 (fr) * 2017-03-14 2018-09-20 Gkn Sinter Metals Engineering Gmbh Procédé pour la fabrication d'une ébauche à l'aide d'un outil de presse, outil de presse, ébauche ainsi que pièce frittée
CN110785245A (zh) * 2017-03-14 2020-02-11 吉凯恩粉末冶金工程有限公司 用压制工具制造生坯的方法、压制工具、生坯和烧结件
US11318533B2 (en) 2017-03-14 2022-05-03 Gkn Sinter Metals Engineering Gmbh Method for producing a green compact using a pressing tool, a pressing tool, a green compact, and a sintered part
CN110785245B (zh) * 2017-03-14 2022-08-19 吉凯恩粉末冶金工程有限公司 用压制工具制造生坯的方法、压制工具、生坯和烧结件

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