DE888318C - Core for the production of bodies containing cavities - Google Patents

Core for the production of bodies containing cavities

Info

Publication number
DE888318C
DE888318C DEB16551A DEB0016551A DE888318C DE 888318 C DE888318 C DE 888318C DE B16551 A DEB16551 A DE B16551A DE B0016551 A DEB0016551 A DE B0016551A DE 888318 C DE888318 C DE 888318C
Authority
DE
Germany
Prior art keywords
core
containing cavities
production
bodies containing
cores
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
Application number
DEB16551A
Other languages
German (de)
Inventor
Wilhelm Dipl-Ing Lindner
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DEB16551A priority Critical patent/DE888318C/en
Application granted granted Critical
Publication of DE888318C publication Critical patent/DE888318C/en
Expired legal-status Critical Current

Links

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
    • 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
    • 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
    • B22F3/10—Sintering only
    • B22F2003/1042—Sintering only with support for articles to be sintered
    • B22F2003/1046—Sintering only with support for articles to be sintered with separating means for articles to be sintered
    • 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
    • B22F2005/103—Cavity made by removal of insert

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

Kern zum Herstellen von Hohlräume enthaltenden Körpern Die Erfindung bezieht sich auf einen Kern zur Durchführung des Verfahrens zur Herstellung von Körpern mit Hohlräumen nach Patent 823 790. Es kommt bei diesem Verfahren insbesondere auch darauf an, daß der verwendete Kern so aufgebaut ist, daß beim Pressen der Sinterkörper überall möglichst gleich dicht wird, nicht aufreißt und die beabsichtigte Form des Hohlraums hinreichend genau zustande kommt.Core for producing bodies containing cavities The invention relates to a core for carrying out the method for producing bodies with cavities according to Patent 823,790 the sintered body is as dense as possible everywhere, does not tear and the intended shape of the cavity is achieved with sufficient accuracy.

Mit den im Patent 82.3 79o angegebenen Kernen lassen sich diese Forderungen nicht immer erfüllen. Dieser Nachteil kann beseitigt werden, indem man gemäß der Erfindung den Kern mit einer zweckmäßig dünnen Oberflächenschicht versieht, die vermöge ihres Aufbaus oder, weil sie aus einem an sich schon nachgiebigeren Stoff besteht, leichter verformbar ist als der Werkstoff im Innern des Kerns. Beispielsweise kann man den Kern mit Eis überziehen. Als besonders zweckmäßig haben sich Kerne erwiesen, die aus Naphthalin oder verwandten Kohlenwasserstoffen mit einem Eisüberzug bestehen.These requirements can be met with the cores specified in patent 82.3 79o not always meet. This disadvantage can be eliminated by following the Invention provides the core with a suitably thin surface layer that by virtue of their structure or because they are made of a material that is already more flexible in itself exists, is more easily deformed than the material inside the core. For example you can cover the core with ice. Cores have proven to be particularly useful proven to be made from naphthalene or related hydrocarbons with an ice coating exist.

Claims (3)

PATENTANSPRÜCHE: r. Kerne zur Durchführung des Verfahrens zur Herstellung von Hohlräume enthaltenden Körpern nach Patent 823 79o, dadurch gekennzeichnet, daß die Kerne auf ihrer Oberfläche mit einer vorzugsweise dünnen Schicht versehen sind, die leichter verformbar ist als der Werkstoff im Innern. PATENT CLAIMS: r. Cores for carrying out the manufacturing process of bodies containing cavities according to Patent 823 79o, characterized in, that the cores are provided with a preferably thin layer on their surface that is more easily deformable than the material inside. 2. Kerne nach Anspruch r, dadurch -gekennzeichnet, daß als äußere Schicht Eis verwendet wird. 2. Cores according to claim r, characterized in that ice is used as the outer layer. 3. Kerne nach Anspruch 2, dadurch gekennzeichnet, daß die Eisschicht auf einen Kern aus Naphthalin oder einem verwandten Kohlenwasserstoff aufgebracht ist.3. Cores according to claim 2, characterized in that the ice layer is based on a core made of naphthalene or a related hydrocarbon.
DEB16551A 1951-09-01 1951-09-01 Core for the production of bodies containing cavities Expired DE888318C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB16551A DE888318C (en) 1951-09-01 1951-09-01 Core for the production of bodies containing cavities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB16551A DE888318C (en) 1951-09-01 1951-09-01 Core for the production of bodies containing cavities

Publications (1)

Publication Number Publication Date
DE888318C true DE888318C (en) 1953-08-31

Family

ID=6958956

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB16551A Expired DE888318C (en) 1951-09-01 1951-09-01 Core for the production of bodies containing cavities

Country Status (1)

Country Link
DE (1) DE888318C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690374A1 (en) * 1992-04-24 1993-10-29 Programme 3 Patent Holdings Process for the production of a processed product and sintered ceramic material obtained by this process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690374A1 (en) * 1992-04-24 1993-10-29 Programme 3 Patent Holdings Process for the production of a processed product and sintered ceramic material obtained by this process

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