DE482538C - Contractible metal core composed of ring segments for casting hollow blocks with a flexible or charring mass between the core parts - Google Patents

Contractible metal core composed of ring segments for casting hollow blocks with a flexible or charring mass between the core parts

Info

Publication number
DE482538C
DE482538C DESCH83716D DESC083716D DE482538C DE 482538 C DE482538 C DE 482538C DE SCH83716 D DESCH83716 D DE SCH83716D DE SC083716 D DESC083716 D DE SC083716D DE 482538 C DE482538 C DE 482538C
Authority
DE
Germany
Prior art keywords
core
charring
mass
flexible
ring segments
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
DESCH83716D
Other languages
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DESCH83716D priority Critical patent/DE482538C/en
Application granted granted Critical
Publication of DE482538C publication Critical patent/DE482538C/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
    • B22D7/00Casting ingots, e.g. from ferrous metals
    • B22D7/04Casting hollow ingots
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Description

Zusammenziehbarer, aus Ringsegmenten zusammengesetzter Metallkern zum Gießen von Hohlblöcken mit nachgiebiger oder verkohlbarer masse zwischen den Kernteilen Es ist bekannt, beim Gießen von Röhren oder hohlen Metallblöcken längsgeteilte Metallkerne zu benutzen und in den Fugen dieser Kerne nachgiebige oder auch verkohlbare Stoffe anzubringen, so daß der Kern beim Abkühlen des Gußstückes nachgeben kann. Es ist auch vorgeschlagen worden, die aus metallenen Ringsegmenten bestehenden Schalenteile dies Kernes mit einer inneren Holzeinlage zu verschrauben. Die Erfindung betrifft eine Verbesserung eines derartigen längsgeteilten Metallkernes. Nach der Erfindung wird der Kern selbst als Hohlkörper ausgebildet, und die Stoßflächen der Kernteüe werden derart schräg angeordnet, daß sich die Fugen nach dem inneren Hohlraum des Kernes hin erweitern.Contractible metal core composed of ring segments For casting hollow blocks with a flexible or charring mass between the Core parts It is known to split lengthways when casting tubes or hollow metal blocks To use metal cores and in the joints of these cores yielding or charring To attach substances so that the core can yield when the casting cools. It has also been proposed that the shell parts consisting of metal ring segments to screw this core with an inner wooden insert. The invention relates to an improvement of such a longitudinally divided metal core. According to the invention the core itself is designed as a hollow body, and the abutting surfaces of the Kernteüe are arranged at an angle that the joints after the inner cavity of the Expand the core.

Infolge der neuen Ausbildung des Kernes kann dieser seinen Zweck besser als bisher erfüllen. Die zum Ausfüllen der Fugen dienende Masse wird beim Zusammendrücken der Kernteile infolge des Schrumpfens des Gußstückes in den Hohlraum zurückgedrückt, so daß der Kern mit Sicherheit in dem erforderlichen Maße nachgibt und Spannungen vermieden werden. Bei der Anwendung verkohlbarer oder veraschbarer Füllmasse bietet der neue Kern den weiteren Vorteil, daß der Verkohlungsvorgang durch Kühlung der Masse vom inneren Hohlraum des Kernes aus beeinflußt werden kann.As a result of the new formation of the core, it can better serve its purpose than before. The mass used to fill the joints is when pressed together the core parts are pushed back into the cavity as a result of the shrinkage of the casting, so that the core will certainly yield to the required degree and stress be avoided. When using charring or incinerable filling compound offers the new core has the further advantage that the charring process by cooling the Mass can be influenced from the inner cavity of the core.

In der Zeichnung ist eine Ausführungsform des Kernes dargestellt. Es zeigen: Abb. i einen wagerechten Schnitt durch den Kern, Abb. 2 einen senkrechten Schnitt durch die Kokille und den Kern.In the drawing, an embodiment of the core is shown. They show: Fig. I a horizontal section through the core, Fig. 2 a vertical section Section through the mold and the core.

Der Kern besteht aus vier Teilen a, b, c, d, die ringsegmentförmig ausgebildet sind und somit einen Hohlraum c einschließen. Die Stoßfläche f der Kernteile sind schräg angeordnet, so daß die zwischen den Teilen gebildeten Fugen g sich nach dem. Hohlraum e hin erweitern. Die in die Fugen eingebrachte Masse la wird beim Zusammenpressen der Kernteile in den Hohlraum zurückgedrückt. Sie besteht gegebenenfalls aus verkohlbarem Stoff, deren Verbrennung oder Verkohlung durch Kühlung des Kernes vom Hohlraum e her verzögert werden kann.The core consists of four parts a, b, c, d, which are formed in the shape of a ring segment and thus enclose a cavity c. The abutment surface f of the core parts are arranged obliquely, so that the joints formed between the parts g after. Expand cavity e. The mass la introduced into the joints is pushed back into the cavity when the core parts are pressed together. If necessary, it consists of charring material, the combustion or charring of which can be delayed by cooling the core from the cavity e.

Bei dem Ausführungsbeispiel ist der Kern in die Kokille i eingehängt, so daß das Metall unter ihm zusammenfließen kann.In the exemplary embodiment, the core is suspended in the mold i, so that the metal can flow together under him.

Claims (1)

PATENTANSPRUCH: Zusammenziehbarer, aus Ringsegmenten zusammengesetzter Metallkern mit nachgiebiger oder verkoblbarer Masse zwischen den Kernteilern. zum Gießen von Hohlblöcken, dadurch gekennzeichnet, daß die Segmente einen Hohlraum umschließen, und daß sich die zwischen den Stoßflächen (f) der Segmente gebildeten Fugen (g) nach dem Hohlraum des Kernes hin erweitern.PATENT CLAIM: Contractable, composed of ring segments Metal core with a flexible or lockable mass between the core dividers. to the Casting hollow blocks, characterized in that the segments have a cavity enclose, and that the formed between the abutment surfaces (f) of the segments Extend the joints (g) towards the cavity of the core.
DESCH83716D Contractible metal core composed of ring segments for casting hollow blocks with a flexible or charring mass between the core parts Expired DE482538C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH83716D DE482538C (en) Contractible metal core composed of ring segments for casting hollow blocks with a flexible or charring mass between the core parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH83716D DE482538C (en) Contractible metal core composed of ring segments for casting hollow blocks with a flexible or charring mass between the core parts

Publications (1)

Publication Number Publication Date
DE482538C true DE482538C (en) 1929-09-16

Family

ID=7442798

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH83716D Expired DE482538C (en) Contractible metal core composed of ring segments for casting hollow blocks with a flexible or charring mass between the core parts

Country Status (1)

Country Link
DE (1) DE482538C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748017C (en) * 1938-02-03 1944-11-13 Carl Adey Multi-part metallic molded or core part for the production of finished castings from non-ferrous heavy metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748017C (en) * 1938-02-03 1944-11-13 Carl Adey Multi-part metallic molded or core part for the production of finished castings from non-ferrous heavy metals

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