WO1987001634A1 - Procede et dispositif de frittage sous pression pour la production d'outils diamants noyes dans du metal - Google Patents

Procede et dispositif de frittage sous pression pour la production d'outils diamants noyes dans du metal Download PDF

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Publication number
WO1987001634A1
WO1987001634A1 PCT/EP1986/000569 EP8600569W WO8701634A1 WO 1987001634 A1 WO1987001634 A1 WO 1987001634A1 EP 8600569 W EP8600569 W EP 8600569W WO 8701634 A1 WO8701634 A1 WO 8701634A1
Authority
WO
WIPO (PCT)
Prior art keywords
tools
pressure sintering
pressure
sintered
diamond
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.)
Ceased
Application number
PCT/EP1986/000569
Other languages
German (de)
English (en)
Inventor
Johann Steiner
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.)
Individual
Original Assignee
Individual
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
Priority claimed from CH399185A external-priority patent/CH669357A5/de
Application filed by Individual filed Critical Individual
Publication of WO1987001634A1 publication Critical patent/WO1987001634A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • 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
    • B22F5/003—Articles made for being fractured or separated into parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D73/00—Making files or rasps

Definitions

  • the invention relates to a method according to the preamble of claim 1 and an apparatus for performing the method.
  • the actual roughness depths corresponding to the VDI guideline 3400 are in a range of 4 - 150 ⁇ m.
  • Fig. 1 shows in section on a support body, which has a cross-sectional shape of commercially available files, in one
  • Nickel layer 12 galvanically bonded diamond grains
  • a covering area of 1 mm 2 for D 51 with about 200 grains accounts for 10 grains with an over size of 30 ⁇ m, for D 124 with 60 grains per mm '' 4 grains with an oversize of 60 ⁇ m and with D 181 with 25 grains per mm 2 only a single grain with an oversize of 90 ⁇ m.
  • 25% of the grains in a grain fraction are smaller than the lowest grain size specified, whereby the 1 1/2 times the upper limit should not be exceeded.
  • Electro-bonded diamond files are fine in grit D 51; D 124 medium and D 181 roughly manufactured.
  • the invention has for its object to provide self-sharpening, in particular by means of hand filing machines in short stroke, metal-bonded diamond tools, which, depending on the, resulting from the different spark intensity during spark erosion, economical removal of the extremely hard layer allow at the same time reproducible leveling.
  • Pressure sintering at 600 ° C. and the use of molds made from temper-resistant steels advantageously means that there is no fear of burning, even after a large number of pressure sintering processes have been carried out.
  • the method according to the invention ensures that a given press capacity, expressed in sintering pressure per cm 2 of sintering press area, can be fully utilized. A sufficiently large sintering press area is made available.
  • the filled diamond-sintered metal powder mixture forms a layer in the form, the thickness dimension of which is small compared to the length and width dimension of the entire layer.
  • the pressure is practically applied transversely to the main axis of the tool, especially if this is as prismatic rod is to be formed.
  • the individual tools are formed to form a plate that can be removed from the mold, the individual tools then being separated from one another, for example by spark erosion.
  • the profiling of the die, d. H. of the lower and upper stamp with the desired contour in the simplest way possible by grinding or by spark erosion. If the tools arranged next to each other, especially in the form of prismatic rods, are removed from the mold as a coherent plate, the division of all rods into short pieces can be done in this state for subsequent roughening on round rods with an electrode with copper sheets arranged at the desired distance on a spark erosion machine or done by spark erosion.
  • the individual manufactured rods can be fixed in the desired working length in a chuck with holder and shaft corresponding to the cross section of the rods in their receptacle. For example:
  • the following number of 40 mm long rods can be arranged on a sintered press die surface of 3 x 4 cm:
  • spark-erosive electrode divided results in the following number of rods of 6 mm in length with the specified diameters:
  • FIG. 11 shows a sintering tool made of sintered carbon with lower punch 111 and upper punch 112 and the bores 113 for filling in the metal and diamond powder mixture, as could be used for the production of round metal-bound diamond tools.
  • a diamond micropowder of the following composition can be used with particular advantage: Grain number of grains / carat concentration
  • This method is particularly suitable for production with a sintered mold with lower and upper stamps, in which the lower stamp and upper stamp are correspondingly profiled in such a way that in both the mold recesses are parallel to one another.
  • a sintered mold can be filled without problems, and sintered moldings with predetermined cross sections can be produced, which are then in corresponding lengths are divided in order to produce a large number of tool units with one machining operation.
  • FIG. 1 shows a section through a file body with diamond granules bonded galvanically in one layer
  • FIG. 2 shows an embodiment of a tool according to the invention in a perspective view in the working position
  • Fig. 3 is a perspective view of a rectangular tool.
  • FIG. 5 is a perspective view of a triangular tool
  • FIG. 6 is a perspective view of a round tool
  • Fig. 7 is a perspective view of a half round tool
  • FIG. 9 is a perspective view of a knife-shaped tool
  • FIG. 11 is a perspective view of a sintering tool made of sintered carbon with lower and upper punches, as is often used today for the production of, for example, round, metal-bound diamond tools,
  • Fig. 12 is a perspective view of an embodiment of a sintering tool with a profiled lower and corresponding upper punch and frame part.
  • each mm 3 contains the metal-bound microgranules with a concentration of 100 at Grain the number of grains per mm 3
  • FIG. 12 shows a perspective illustration of an embodiment of a sintering tool with profiled lower punch 121, correspondingly profiled upper punch 122 and matching frame 123 which does not have the disadvantages of the sintering tool according to FIG. 11.
  • the diamond-metal powder mixture precisely dosed in accordance with the resulting cavity between the profile punches 121 and 123 is filled and sintered under pressure in accordance with the punch profile 125.
  • the sintered profiles for the tools according to FIGS. 3 to 10 and also other designs in different shapes and dimensions can be produced simply and inexpensively in the manner described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Un procédé de frittage sous pression pour la production d'outils diamants noyés dans du métal, en particulier des limes à main, est effectué dans des moules en aciers résistant au revenu à une température d'environ 600oC. Le dosage de la quantité de mélange pulvérulent et la conception de la section transversale et de la surface des poinçons sont tels que la capacité de la presse est utilisée au maximum et qu'une pluralité d'outils adjacents et connectés ayant la section transversale voulue sont produits en une seule opération.
PCT/EP1986/000569 1985-09-16 1986-09-15 Procede et dispositif de frittage sous pression pour la production d'outils diamants noyes dans du metal Ceased WO1987001634A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH399185A CH669357A5 (fr) 1985-09-16 1985-09-16
CH3991/85-0 1985-09-16
DE19863615127 DE3615127A1 (de) 1985-09-16 1986-05-02 Drucksinterverfahren zur herstellung metallgebundener diamantwerkzeuge und vorrichtung zur durchfuehrung des verfahrens
DEP3615127.0 1986-05-02

Publications (1)

Publication Number Publication Date
WO1987001634A1 true WO1987001634A1 (fr) 1987-03-26

Family

ID=25694353

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1986/000569 Ceased WO1987001634A1 (fr) 1985-09-16 1986-09-15 Procede et dispositif de frittage sous pression pour la production d'outils diamants noyes dans du metal

Country Status (1)

Country Link
WO (1) WO1987001634A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2796343C1 (ru) * 2022-08-09 2023-05-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") Пресс-форма по изготовлению прутков для аргонодуговой наплавки

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE412892C (de) * 1925-04-28 Edouard Coenen Herstellung von Feilen
FR2423626A1 (fr) * 1978-04-21 1979-11-16 Christensen Inc Trepan de forage rotatif pour forages profonds
DE3103351A1 (de) * 1981-01-31 1982-08-26 Sumitomo Electric Industries, Ltd., Osaka Verbundsinterkoerper sowie verfahren zu dessen herstellung
EP0168953A1 (fr) * 1984-06-12 1986-01-22 Sumitomo Electric Industries Limited Bâton en matériaux composites et son procédé de fabrication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE412892C (de) * 1925-04-28 Edouard Coenen Herstellung von Feilen
FR2423626A1 (fr) * 1978-04-21 1979-11-16 Christensen Inc Trepan de forage rotatif pour forages profonds
DE3103351A1 (de) * 1981-01-31 1982-08-26 Sumitomo Electric Industries, Ltd., Osaka Verbundsinterkoerper sowie verfahren zu dessen herstellung
EP0168953A1 (fr) * 1984-06-12 1986-01-22 Sumitomo Electric Industries Limited Bâton en matériaux composites et son procédé de fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2796343C1 (ru) * 2022-08-09 2023-05-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") Пресс-форма по изготовлению прутков для аргонодуговой наплавки

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