EP0185951B1 - Presse pour compacter de la poudre métallique - Google Patents

Presse pour compacter de la poudre métallique Download PDF

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Publication number
EP0185951B1
EP0185951B1 EP85115038A EP85115038A EP0185951B1 EP 0185951 B1 EP0185951 B1 EP 0185951B1 EP 85115038 A EP85115038 A EP 85115038A EP 85115038 A EP85115038 A EP 85115038A EP 0185951 B1 EP0185951 B1 EP 0185951B1
Authority
EP
European Patent Office
Prior art keywords
mould
outer ring
die
tool
consolidating
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.)
Expired - Lifetime
Application number
EP85115038A
Other languages
German (de)
English (en)
Other versions
EP0185951A1 (fr
Inventor
Ignaz Dipl.-Ing. Mathy
Heinrich Koop
Günther Dr.-Ing. Scharf
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.)
Vereinigte Aluminium Werke AG
Original Assignee
Vereinigte Aluminium Werke 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 Vereinigte Aluminium Werke AG filed Critical Vereinigte Aluminium Werke AG
Priority to AT85115038T priority Critical patent/ATE50181T1/de
Publication of EP0185951A1 publication Critical patent/EP0185951A1/fr
Application granted granted Critical
Publication of EP0185951B1 publication Critical patent/EP0185951B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/022—Moulds for compacting material in powder, granular of pasta form
    • 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

Definitions

  • the invention relates to a consolidation tool for compacting metal powders, consisting of a die, lower and upper punches and lateral guides and a press table.
  • Such tools are known from DE-PS-2 224 592.
  • a double-acting press force is applied with a single-sided press.
  • the die is suspended from a movable intermediate crossbar, the die being moved over the lower punch for molding and the powder bar being expelled in the process.
  • the object of the invention is to develop a consolidation tool of the type mentioned at the outset which enables the compacting of metal powders, in particular in the form of slim powder bars with a diameter to height ratio of 0.0125 to 0.21, without cracking in a simple manner.
  • segment matrices were known from DE-OS-2 501 613, these are so technically complex that they are difficult to operate and handle in practice.
  • the floating arrangement of the consolidation tool according to the invention by means of spring force, hydraulic and / or pneumatic cylinders ensures that the initial position of the die is securely positioned. Furthermore, it is possible to control the die speed during the upsetting process in relation to the movable punch in such a way that, in the case of particularly slim powder bars, the die travels at a predetermined speed when the upper punch drops.
  • the preferred pressing forces are between 200 and 800 N / mm 2.
  • the angle of the cone wall to the axial is between 0.3 and 10 °. Within these limits, the angle can be selected as a function of the pressing forces so that hardly any securing forces against the die emerging from the outer ring are necessary during the pressing process.
  • the wedge shape influences the pressing force for releasing the die from the inner ring after the consolidation process.
  • Fig. 1 the die is labeled 1, the spring, hydraulic and / or pneumatic cylinder 2, 3 and the press table 4. Upper and lower punches 5, 6 protrude into the die, between which the powder mixture 7 is arranged.
  • the pressing force is symbolically represented by arrow 8.
  • the die 1 is provided with an outer cone and held in an outer ring 9 which has a correspondingly designed inner cone.
  • the outer ring 9 is guided on the stands 12, 13 by means of crossbeams 10, 11.
  • Terminal strips 14 can be arranged between the outer cone and the inner cone, which serve to secure the position of the individual parts of the consolidation tool.
  • a four-part die is shown, consisting of the individual segments 21-24.
  • Fig. 3 shows an asymmetrically divided die with the segments 31-34. This arrangement has the advantage that it is easier to manufacture in terms of manufacturing technology and therefore in mass production is preferably used.
  • a cylinder 90 mm in diameter and 250 mm in height was produced with the powder made of AICuMg2, a pressing force of 650 N / mm 2 being applied for 2 minutes.
  • a powder blank with a diameter of 80 mm and a height of 200 mm was produced from the AIZnMgCu1.5 alloy, with 800 N / mm 2 acting on the powder for 10 min.
  • Pressure rings were used to press out the die, which enable the die and outer ring to be moved separately by means of an upper punch.

Claims (4)

1. Outillage de consolidetion pour le compactage de poudres métalliques, constitué d'une matrice (1) comportant un cône extérieur (16) de poinçons supérieur et inférieur (5, 6) ainsi que de guides latéraux (10 à 13) et d'une table de compression (4), le matrice (1) étant divisée eu moins en trois segments et étant en appui par l'action de ressorts et/ou de verins hydrauliques et/ou pneumatiques (2, 3), contre le table de compression, le matrice (1) étant maintenue dans un anneau extérieur (9) comportent un cône intérieur, et des moyens étant prévus pour éjecter le matrice (1) après chaque processus de compression.
2. Outillage de consolidetion selon la revendication 1, caractérisé en ce que l'anneau extérieur est guidé sur au moins deux tiges verticales (12, 13) et est appuyé par des ressorts, et/ou un vérin hydraulique et/ou pneumatique (2, 3) contre le table de compression (4), la force élastique ou l'amortissement correspondant au poids propre de la matrice (1) et de l'anneau extérieur (9).
3. Outillage de consolidation selon l'une des revendications précédentes, caractérisé en ce que l'anneau extérieur (9) présente un cône intérieur (14) comportant une paroi inclinée de 0,3 à 10° par rapport à l'axe central.
4. Outillage de consolidation selon l'une des revendications précédentes, caractérisé en ce que la matrice (1) présente un cône extérieur (16) et qu'elle est bloquée dans l'anneau extérieur (9) par des barres de serrage (14).
EP85115038A 1984-12-22 1985-11-27 Presse pour compacter de la poudre métallique Expired - Lifetime EP0185951B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85115038T ATE50181T1 (de) 1984-12-22 1985-11-27 Konsolidierungswerkzeug zum kompaktieren von metallpulver.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3447134 1984-12-22
DE19843447134 DE3447134A1 (de) 1984-12-22 1984-12-22 Konsolidierungswerkzeug zum kompaktieren von metallpulver

Publications (2)

Publication Number Publication Date
EP0185951A1 EP0185951A1 (fr) 1986-07-02
EP0185951B1 true EP0185951B1 (fr) 1990-02-07

Family

ID=6253699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115038A Expired - Lifetime EP0185951B1 (fr) 1984-12-22 1985-11-27 Presse pour compacter de la poudre métallique

Country Status (5)

Country Link
EP (1) EP0185951B1 (fr)
AT (1) ATE50181T1 (fr)
DE (1) DE3447134A1 (fr)
ES (1) ES8702235A1 (fr)
NO (1) NO854486L (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8722690D0 (en) * 1987-09-26 1987-11-04 Penny & Giles Conductive Plast Rotary forging machines
JP3513587B2 (ja) * 1999-07-26 2004-03-31 独立行政法人産業技術総合研究所 チタン又はチタン合金製高生体親和性人工骨の作製方法
GB2371773B (en) * 1999-07-26 2004-01-07 Agency Ind Science Techn Mould for producing artificial bone
CN103302891B (zh) * 2013-05-15 2016-08-10 吉林大学 一种新型粉体压片模具
CN103331444B (zh) * 2013-07-05 2015-09-30 益阳市新纪元粉末冶金有限公司 粉末冶金制品压制成型模具及应用和成型脱模方法
CN108655396A (zh) * 2018-04-13 2018-10-16 海宁金瑞金属制品有限公司 粉末冶金成型模中固定模的缓冲组件

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1609460A (en) * 1925-01-28 1926-12-07 Western Electric Co Apparatus for molding articles under high pressure
DE541977C (de) * 1930-03-20 1932-01-16 Steatit Magnesia Akt Ges Geteilte Form zum Pressen von Gegenstaenden aus pulver- oder teigfoermigen Massen
US2253003A (en) * 1938-03-18 1941-08-19 Johnson Lab Inc Means for compressing finely divided substances and process therefor
FR2141434B1 (fr) * 1971-06-02 1973-06-29 Lorraine Carbone
DE2501613A1 (de) * 1975-01-16 1976-07-22 Michael W Freeman Segmentmatrizen

Also Published As

Publication number Publication date
DE3447134A1 (de) 1986-06-26
NO854486L (no) 1986-06-23
ATE50181T1 (de) 1990-02-15
ES550157A0 (es) 1986-12-16
ES8702235A1 (es) 1986-12-16
EP0185951A1 (fr) 1986-07-02

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