EP0085976A1 - Permanent mould with at least two adjacent mould-cavities for vertical pouring - Google Patents

Permanent mould with at least two adjacent mould-cavities for vertical pouring Download PDF

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Publication number
EP0085976A1
EP0085976A1 EP83101140A EP83101140A EP0085976A1 EP 0085976 A1 EP0085976 A1 EP 0085976A1 EP 83101140 A EP83101140 A EP 83101140A EP 83101140 A EP83101140 A EP 83101140A EP 0085976 A1 EP0085976 A1 EP 0085976A1
Authority
EP
European Patent Office
Prior art keywords
permanent
mold
cavities
mold cavities
compensating
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.)
Granted
Application number
EP83101140A
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German (de)
French (fr)
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EP0085976B1 (en
Inventor
Ivo Henych
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.)
Georg Fischer AG
Original Assignee
Georg Fischer 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 Georg Fischer AG filed Critical Georg Fischer AG
Priority to AT83101140T priority Critical patent/ATE13495T1/en
Publication of EP0085976A1 publication Critical patent/EP0085976A1/en
Application granted granted Critical
Publication of EP0085976B1 publication Critical patent/EP0085976B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks

Definitions

  • the present invention relates to a permanent mold with at least two mold cavities arranged side by side.
  • This permanent form is particularly suitable for use for direct falling pouring.
  • the falling pouring method enables a high liquid metal output to be achieved through controlled solidification.
  • the solidification can be further improved up to almost 100%.
  • the more favorable temperature gradient in the casting, i.e. the hottest metal in the upper part of the casting supports the desired solidification direction from bottom to top, where the feeder is placed.
  • the falling casting method is also used for smaller castings, but with a barrel system and with gates, which results in lower liquid metal output and higher stress on the permanent mold, which inevitably leads to a shorter service life.
  • the aim of the present invention is to propose a permanent mold with which, on the one hand, the advantages of the falling casting method can be used for lighter castings, and on the other hand, several castings can be cast at once.
  • the single figure shows a multiple permanent form 1, which is filled directly with a liquid metal 2 falling from above.
  • the liquid metal 2 flows from a container 3 via several pouring nozzles 5 simultaneously into the mold cavities 4 of the permanent mold 1.
  • the container 3 can be a holding furnace or a distributor with pouring nozzles. When using a distributor and a ladle, the amount of liquid metal should be adapted to the casting or castings so that the losses through Metal residues remain minimal.
  • the individual cavities are connected by means of compensation channels 6.
  • the pouring nozzle cross sections are also graduated. These measures guarantee that the same climbing speed and filling time are achieved in all cavities.
  • the connection is provided in the lower part of the mold cavities.
  • several compensating connections are necessary, which are preferably arranged one above the other in parallel. Since an irregular filling speed usually occurs at the beginning and at the end of the casting process, it is usually necessary to provide the compensating connections in the lower and in the upper part of the mold cavity.
  • the upper compensation connection can also be arranged between the feeders.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Slide Fasteners (AREA)
  • Bag Frames (AREA)
  • Buckles (AREA)
  • Casting Devices For Molds (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

1. Cast metal-permanent mould (1) for vertical pouring with at least two adjacently located mould cavities (4), characterised in that each of the adjacently located mould cavities (4) has a metal inlet fed from a common container (3) for the liquid metal (2), wherein the nozzle cross sections of these metal inlets are graduated, and in that the mould cavities (4) are joined together by an equaliser connection (6), which is arranged as a closed below the upper side of the cast object.

Description

Die vorliegende Erfindung bezieht sich auf eine Dauerfcrm mit mindestens zwei nebeneinander angeordneten Formhohlräumen.The present invention relates to a permanent mold with at least two mold cavities arranged side by side.

Diese Dauerform eignet sich insbesondere zur Verwendung für die direkte fallende Giessweise.This permanent form is particularly suitable for use for direct falling pouring.

Die fallende Giessweise ermöglicht es ein hohes Flüssigmetallausbringen durch gesteuerte Erstarrung zu erreichen. Durch Optimierung der Giessgeschwindigkeit, im Verhältnis zum Wärmetransport zwischen dem Gussstück und der Formwand kann die Erstarrung weiter bis zu beinahe 100 % verbessert werden. Der günstigere Temperaturgradient im Gussstück, d.h. das heisseste Metall im oberen Teil des Gussstückes, unterstützt die gewünschte Erstarrungsrichtung von unten nach oben, wo der Speiser plaziert ist.The falling pouring method enables a high liquid metal output to be achieved through controlled solidification. By optimizing the casting speed, in relation to the heat transport between the casting and the mold wall, the solidification can be further improved up to almost 100%. The more favorable temperature gradient in the casting, i.e. the hottest metal in the upper part of the casting supports the desired solidification direction from bottom to top, where the feeder is placed.

Dieses Verfahren kann in der Regel nur für genügend schwere Gussstücke eingesetzt werden. Beim mechanisierten Dauerformgiessverfahren liegt die untere wirtschaftliche Grenze bei Gussstückgewichten zwischen 10 und 25 kg.This procedure can usually only be used for castings of sufficient weight. With mechanized duration molding process, the lower economic limit for casting weights is between 10 and 25 kg.

Zwar wird die fallende Giessweise auch für kleinere Gussstücke eingesetzt, jedoch mit Laufsystem und mit Anschnitten, was zu einem niedrigeren Flüssigmetallausbringen, sowie zur höheren Belastung der Dauerform, somit zwangsläufig zur kürzeren Lebensdauer führt.The falling casting method is also used for smaller castings, but with a barrel system and with gates, which results in lower liquid metal output and higher stress on the permanent mold, which inevitably leads to a shorter service life.

Ziel der vorliegenden Erfindung ist es eine Dauerform vorzuschlagen mit welcher einerseits die Vorteile der fallenden Giessweise auch für leichtere Gussstücke genutzt werden können, und andererseits mehrere Gussstücke auf einmal gegossen werden können.The aim of the present invention is to propose a permanent mold with which, on the one hand, the advantages of the falling casting method can be used for lighter castings, and on the other hand, several castings can be cast at once.

Dieses Ziel wird erfindungsgemäss durch die Lehre des Anspruches 1 gelöst.According to the invention, this aim is achieved by the teaching of claim 1.

Weitere vorteilhafte Ausgestaltungen ergeben sich aus den abhängigen Ansprüchen.Further advantageous configurations result from the dependent claims.

Die Erfindung wird anhand der beigelegten Zeichnung beispielsweise näher erläutert.The invention is explained in more detail, for example, with reference to the accompanying drawing.

Die einzige Figur zeigt eine mehrfache Dauerform 1, die direkt mit einem von oben fallenden flüssigen Metall 2 gefüllt wird. Das flüssige Metall 2 fliesst aus einem Behälter 3 über mehrere Giessdüsen 5 gleichzeitig in die Formhohlräume 4 der Dauerform 1. Der Behälter 3 kann ein Warmhalteofen oder ein Verteiler mit Giessdüsen sein. Bei der Verwendung eines Verteilers und einer Giesspfanne soll die Flüssigmetallmenge dem Gussstück bzw. den Gussstücken so angepasst werden, dass die Verluste durch Metallresten minim bleiben.The single figure shows a multiple permanent form 1, which is filled directly with a liquid metal 2 falling from above. The liquid metal 2 flows from a container 3 via several pouring nozzles 5 simultaneously into the mold cavities 4 of the permanent mold 1. The container 3 can be a holding furnace or a distributor with pouring nozzles. When using a distributor and a ladle, the amount of liquid metal should be adapted to the casting or castings so that the losses through Metal residues remain minimal.

Um die Füllgeschwindigkeit in allen Formhohlräumen 4 auszugleichen sind die einzelnen Hohlräume mittels Ausgleichskanälen 6 verbunden. Zudem sind die Giessdüsenquerschnitte abgestuft. Diese Massnahmen garantieren, dass in allen Hohlräumen die gleiche Steiggeschwindigkeit und die gleiche Füllzeit erreicht werden.In order to compensate for the filling speed in all mold cavities 4, the individual cavities are connected by means of compensation channels 6. The pouring nozzle cross sections are also graduated. These measures guarantee that the same climbing speed and filling time are achieved in all cavities.

Bei kleinen Gussstücken ist es möglich, mit nur einer Ausgleichsverbindung den Ausgleich zwischen den Hohlräumen zu erreichen. In diesem Fall wird die Verbindung im unteren Teil der Formhohlräume vorgesehen. Bei grösseren Gussstücken dagegen sind mehrere Ausgleichsverbindungen notwendig, die vorzugsweise parallel übereinander angeordnet werden. Da eine unregelmässige Füllgeschwindigkeit meistens am Anfang und am Ende des Giessvorganges auftritt ist es in der Regel notwendig, die Ausgleichsverbindungen im unteren und im oberen Teil des Formhohlraumes vorzusehen. Als eine weitere Möglichkeit kann die obere Ausgleichsverbindung auch zwischen den Speisern angeordnet sein.In the case of small castings, it is possible to achieve the compensation between the cavities with only one compensation connection. In this case, the connection is provided in the lower part of the mold cavities. In the case of larger castings, on the other hand, several compensating connections are necessary, which are preferably arranged one above the other in parallel. Since an irregular filling speed usually occurs at the beginning and at the end of the casting process, it is usually necessary to provide the compensating connections in the lower and in the upper part of the mold cavity. As a further possibility, the upper compensation connection can also be arranged between the feeders.

Bei genug grosser Dimensionierung der Ausgleichsverbindung bei mittelgrossen Gussstücken ist die Anordnung nur einer oberen Verbindung ausreichend.If the compensating connection is large enough for medium-sized castings, the arrangement of only one upper connection is sufficient.

Claims (10)

1. Metallguss-Dauerform für fallende Giessweise mit mindestens zwei nebeneinander angeordneten Formhohlräumen, dadurch gekennzeichnet, dass je zwei benachbarte Formhohlräume durch mindestens eine Ausgleichsverbindung miteinander verbunden sind.1. Metal casting permanent mold for falling casting with at least two mold cavities arranged next to one another, characterized in that two adjacent mold cavities are connected to one another by at least one compensating connection. 2. Dauerform nach Anspruch 1, dadurch gekennzeichnet, dass zwischen zwei benachbarten Formhohlräumen mehrere Ausgleichsverbindungen vorgesehen sind.2. Permanent mold according to claim 1, characterized in that a plurality of compensating connections are provided between two adjacent mold cavities. 3. Dauerform nach Anspruch 2, dadurch gekennzeichnet, dass die Ausgleichsverbindungen je im unteren und im oberen Teil der Formhohlräume angeordnet sind.3. Permanent mold according to claim 2, characterized in that the compensating connections are each arranged in the lower and in the upper part of the mold cavities. 4. Dauerform nach Anspruch 1, dadurch gekennzeichnet, dass eine Ausgleichsverbindung nur im unteren Teil zwischen den Formhohlräumen angebracht ist.4. D auerform according to claim 1, characterized in that a compensating connection is attached only in the lower part between the mold cavities. 5. Dauerform nach Anspruch 1, dadurch gekennzeichnet, dass eine Ausgleichsverbindung nur im oberen Teil zwischen den Formhohlräumen angebracht ist.5. Permanent mold according to claim 1, characterized in that a compensating connection is attached only in the upper part between the mold cavities. 6. Dauerform nach Anspruch 1, dadurch gekennzeichnet, dass eine Ausgleichsverbindung zwischen den Speisern angebracht ist.6. permanent form according to claim 1, characterized in that a compensating connection between the feeders is attached. 7. Dauerform nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Formhohlräume nebeneinander angeordnet sind, welche untereinander mittels Ausgleichsverbindungen verbunden sind.7. permanent mold according to claim 1, characterized in that a plurality of mold cavities are arranged side by side, which are interconnected by means of compensating connections. 8. Verwendung der Dauerform nach den Ansprüchen 1 bis 7, für direkte fallende Giessweise, wobei das Flüssigmetall ausserhalb der Dauerform auf die einzelnen Formhohlräume verteilt wird.8. Use of the permanent mold according to claims 1 to 7, for direct falling pouring, wherein the liquid metal is distributed outside the permanent mold on the individual mold cavities. 9. Verwendung nach Anspruch 8, wobei die Formhohlräume direkt aus dem Warmhalteofen oder mit Hilfe eines externen Verteilers mittels Giessdüsen gefüllt werden.9. Use according to claim 8, wherein the mold cavities are filled directly from the holding furnace or with the help of an external distributor by means of pouring nozzles. 10. Verwendung nach Anspruch 9, wobei die Füllung der n Formhohlräume durch n simultane Giessstrahlen erfolgt.10. Use according to claim 9, wherein the filling of the n mold cavities takes place by n simultaneous pouring jets.
EP83101140A 1982-02-10 1983-02-07 Permanent mould with at least two adjacent mould-cavities for vertical pouring Expired EP0085976B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83101140T ATE13495T1 (en) 1982-02-10 1983-02-07 PERMANENT MOLD FOR FALL CASTING WITH AT LEAST TWO MOLD CAVIES ARRANGED SIDE BY EACH OTHER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH811/82A CH654500A5 (en) 1982-02-10 1982-02-10 PERMANENT MOLD WITH AT LEAST TWO MOLDING CAVIES ARRANGED SIDE BY EACH OTHER.
CH811/82 1982-02-10

Publications (2)

Publication Number Publication Date
EP0085976A1 true EP0085976A1 (en) 1983-08-17
EP0085976B1 EP0085976B1 (en) 1985-05-29

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ID=4195728

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EP83101140A Expired EP0085976B1 (en) 1982-02-10 1983-02-07 Permanent mould with at least two adjacent mould-cavities for vertical pouring

Country Status (7)

Country Link
EP (1) EP0085976B1 (en)
JP (1) JPS58148047A (en)
AT (1) ATE13495T1 (en)
AU (1) AU1123683A (en)
CH (1) CH654500A5 (en)
DE (1) DE3360218D1 (en)
ZA (1) ZA83794B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241009C1 (en) * 1992-12-05 1994-02-17 Pohl Gmbh & Co Kg Closure for a medication bottle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1031981A (en) * 1951-02-02 1953-06-29 Mass production process by molding in blocks with vertical joints for any metal object or material molded by gravity
US2799906A (en) * 1953-01-26 1957-07-23 William M Duncan Apparatus and method of filling ingot molds
DE1932971A1 (en) * 1969-06-28 1971-01-07 Howmet Corp Ceramic compound mould

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1031981A (en) * 1951-02-02 1953-06-29 Mass production process by molding in blocks with vertical joints for any metal object or material molded by gravity
US2799906A (en) * 1953-01-26 1957-07-23 William M Duncan Apparatus and method of filling ingot molds
DE1932971A1 (en) * 1969-06-28 1971-01-07 Howmet Corp Ceramic compound mould

Also Published As

Publication number Publication date
ATE13495T1 (en) 1985-06-15
CH654500A5 (en) 1986-02-28
EP0085976B1 (en) 1985-05-29
JPS58148047A (en) 1983-09-03
AU1123683A (en) 1983-08-18
ZA83794B (en) 1983-10-26
DE3360218D1 (en) 1985-07-04

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