DE541370C - Process for the production of castings by centrifugal casting - Google Patents

Process for the production of castings by centrifugal casting

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Publication number
DE541370C
DE541370C DEF69909D DEF0069909D DE541370C DE 541370 C DE541370 C DE 541370C DE F69909 D DEF69909 D DE F69909D DE F0069909 D DEF0069909 D DE F0069909D DE 541370 C DE541370 C DE 541370C
Authority
DE
Germany
Prior art keywords
casting
castings
centrifugal casting
production
protective atmosphere
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
DEF69909D
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German (de)
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.)
CURT FRITZSCHE DR
Original Assignee
CURT FRITZSCHE DR
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 CURT FRITZSCHE DR filed Critical CURT FRITZSCHE DR
Priority to DEF69909D priority Critical patent/DE541370C/en
Application granted granted Critical
Publication of DE541370C publication Critical patent/DE541370C/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00Centrifugal casting; Casting by using centrifugal force

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Details (AREA)

Description

Verfahren zur Herstellung von Gußstücken durch Schleuderguß Bei dem Schleudergußverfahren nach Patent 498 446 kann es vorkommen, daß das zu gießende Metall oxydiert, und daß die entstandenen Metalloxyde mit der Einbettungsmasse in chemische oder physikalische Wechselwirkung treten, wodurch eine unerwünschte Verfärbung des Gußstückes oder Blasenbildung oder Schlackenbildung auftreten können.Process for the production of castings by centrifugal casting In the Centrifugal casting process according to patent 498 446 it can happen that the to be cast Metal oxidizes, and that the resulting metal oxides with the embedding material in chemical or physical interaction occur, causing an undesirable discoloration of the casting or blistering or slagging can occur.

Es ist bereits bekannt, entweder beim Schmelzen oder beim Gießen von Metallen eine Schutzatmosphäre aus indifferentem Gas vorzusehen. War die Form vor dem Gießen mit Schutzgas gefüllt, so war keine Vorsorge getroffen, daß das Schutzgas nicht zu früh entwich. Erstarrte das Gußstück nicht augenblicklich, so trat Oxydbildung ein. Meistens wurde bereits auf dem Wege von der Schmelzstelle zur Form oxydiertes Metall vergossen.It is already known, either in melting or in casting A protective atmosphere of inert gas must be provided for metals. Was the shape before the casting was filled with protective gas, so no provision was made that the protective gas did not escape too early. If the casting did not solidify instantaneously, oxide formation occurred a. Most of the time, it was already oxidized on the way from the melting point to the mold Metal potted.

Diese übelstände werden gemäß der Neuerung dadurch vermieden, daß das zu gießende Metall in -einer Schutzatmosphäre geschmolzen wird, und daß das flüssige Metall, ohne daß es aus der Schutzatmosphäre entfernt wird, in die ebenfalls mit Schutzgas angefüllte Forrn geschleudert wird. Hierdurch ergibt sich ein vollkommen oxydfreier Guß. Das Verfahren wird derart ausgeführt, daß vor dem Schmelzen und Gießen alle Fugen und Ritzen der geschlossenen Schleudergußmuffel luftdicht zugekittet werden, und daß durch eine entsprechende Röhre ein indifferentes Gas, z. B. Stickstoff, unter einem geringen Überdruck in die Schleudermuffel geleitet wird. Durch die so geschaffene Schutzatmosphäre wird eine Oxydation des Schmelzgutes verhindert. Es kann zu keiner Oxydbildung kommen, und infolgedessen ist es ausgeschlossen, daß die Einbettungsmasse, die Muffelwandungen, die Heizkörper oder das Gußmetall durch Oxydbildungen beeinflußt werden können. Das Wesen des neuen Verfahrens besteht darin, durch Schaffung der Schutzatmosphäre die Wirkung des Luftsauerstoffes auszuschalten. Durch dieses Verfahren, bei welchem das Schmelzen und Gießen von Metallen in einer Schutzatmosphäre von indifferenten Gasen, z. B. von Stickstoff, vorgenommen wird, ist es auch möglich, Metalle zu vergießen, deren Guß nach den bisherigen Methoden nicht gelungen ist, z. B. das Gießen von Aluminium-Beryllium-Legierungen u. dgl. Es entsteht so ein Schleuderguß von einer Feinheit, wie er bisher noch nie erreicht wurde.These evils are avoided according to the innovation in that the metal to be cast is melted in a protective atmosphere, and that the liquid metal, without it being removed from the protective atmosphere, into the likewise form filled with protective gas is spun. This results in a perfect oxide-free casting. The process is carried out such that before melting and Pour all joints and cracks in the closed centrifugal casting muffle with airtight cement are, and that an inert gas, z. B. nitrogen, is passed under a slight overpressure into the centrifugal muffle. By the so The protective atmosphere created prevents oxidation of the melting material. It no oxide formation can occur, and consequently it is impossible that the embedding compound, the muffle walls, the radiators or the cast metal Oxide formations can be influenced. The essence of the new process is to switch off the effect of atmospheric oxygen by creating the protective atmosphere. By this process, in which the melting and casting of metals in one Protective atmosphere for inert gases, e.g. B. of nitrogen, is carried out, it is also possible to cast metals by casting them according to the previous methods has not succeeded, e.g. B. the casting of aluminum-beryllium alloys and the like. The result is a centrifugal casting of a fineness that has never been achieved before became.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Gußstücken durch Schleuderguß nach Patent 498 _446 guter _Veriyendung einer Schutzatmosphäre aus indifferentem Gas, dadurch _ gekennzeichnet;. daß das Metall in einem geschlossenen, mit Schutzgas erfülltem Raum zum Schmelzen gebracht und in die ebenfalls indifferentes Gas enthaltende Gußform derart geschleudert wird, daß es auf dem Wege vom Schmelzraum zur Form von der Schutzatmosphäre umgeben ist.PATENT CLAIM: Process for the production of castings by centrifugal casting according to patent 498 _446 good _use of a protective atmosphere indifferent gas, characterized by _ ;. that the metal in a closed, with inert gas filled space to melt and into the also indifferent Gas-containing mold is thrown so that it is on the way from the melting chamber to form is surrounded by the protective atmosphere.
DEF69909D 1929-12-19 1929-12-19 Process for the production of castings by centrifugal casting Expired DE541370C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF69909D DE541370C (en) 1929-12-19 1929-12-19 Process for the production of castings by centrifugal casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF69909D DE541370C (en) 1929-12-19 1929-12-19 Process for the production of castings by centrifugal casting

Publications (1)

Publication Number Publication Date
DE541370C true DE541370C (en) 1932-01-06

Family

ID=7111247

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF69909D Expired DE541370C (en) 1929-12-19 1929-12-19 Process for the production of castings by centrifugal casting

Country Status (1)

Country Link
DE (1) DE541370C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096561B (en) * 1952-04-21 1961-01-05 Procedes Arielor Ias E P A R I Centrifugal casting mold for the production of pipes or the like made of metal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096561B (en) * 1952-04-21 1961-01-05 Procedes Arielor Ias E P A R I Centrifugal casting mold for the production of pipes or the like made of metal

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