EP0085976B1 - 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
EP0085976B1
EP0085976B1 EP83101140A EP83101140A EP0085976B1 EP 0085976 B1 EP0085976 B1 EP 0085976B1 EP 83101140 A EP83101140 A EP 83101140A EP 83101140 A EP83101140 A EP 83101140A EP 0085976 B1 EP0085976 B1 EP 0085976B1
Authority
EP
European Patent Office
Prior art keywords
mould
permanent
cavities
equaliser
mould cavities
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
EP83101140A
Other languages
German (de)
French (fr)
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EP0085976A1 (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
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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 for falling casting with at least two mold cavities arranged side by side.
  • US-A-2 799 906 describes side-by-side mold cavities which are filled in sequence using a falling pouring jet.
  • the falling pouring method enables high liquid metal yields to be achieved through controlled solidification.
  • the solidification can be further improved up to almost 100%.
  • the falling casting method is also used for smaller castings, but with a running system and with gates, which leads to 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 values 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 simultaneously from a container 3 via several pouring nozzles 5 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 of 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 rate of climb and the same 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 generally 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (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)
  • Buckles (AREA)
  • Slide Fasteners (AREA)
  • Bag Frames (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 Dauerform für fallende Gießweise mit mindestens zwei nebeneinander angeordneten Formhohlräumen.The present invention relates to a permanent mold for falling casting with at least two mold cavities arranged side by side.

Dauerformen der eingangs genannten Art sind bekannt. Die US-A-2 799 906 beschreibt nebeneinander angeordnete Formhohlräume, die der Reihe nach mit Hilfe eines fallenden Gießstrahles gefüllt werden.Permanent forms of the type mentioned are known. US-A-2 799 906 describes side-by-side mold cavities which are filled in sequence using a falling pouring jet.

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 high liquid metal yields 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. H. 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 process can usually only be used for castings of sufficient weight. In the case of mechanized continuous casting, 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 running system and with gates, which leads to 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 Gießwerte 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 values 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.This goal is achieved according to the invention by the teaching of claim 1.

Weitere vorteilhafte Ausgestaltungen ergeben sich aus den abhängigen Ansprüchen. Die Ansprüche 8 und 9 haben die Verwendung der beanspruchten Dauerform zum Inhalt.Further advantageous configurations result from the dependent claims. Claims 8 and 9 deal with the use of the claimed permanent form.

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

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 an Metallresten minimal 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 simultaneously from a container 3 via several pouring nozzles 5 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 of 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 rate of climb and the same 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 generally 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 (9)

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.
2. Permanent mould according to claim 1, characterised in that between two adjacent mould cavities (4), several equaliser connections (6) are provided.
3. Permanent mould according to claim 2, characterised in that the equaliser connections (6) are arranged respectively in the lower and in the upper part of the mould cavities (4).
4. Permanent mould according to claim 1, characterised in that an equaliser connection (6) is fitted only in the lower part between the mould cavities (4).
5. Permanent mould according to claim 1, characterised in that an equaliser connection (6) is fitted only in the upper part between the mould cavities (4).
6. Permanent mould according to claim 1, characterised in that an equaliser connection (6) is fitted between the feeders.
7. Permanent mould according to claim 1, characterised in that more than two mould cavities (4) are arranged adjacent to one another and they are joined together by means of equaliser connections (6).
8. Use of the permanent mould according to one of claims 1 to 7, whereby the mould cavities (4) are filled directly from the holding furnace or with the aid of an external distributor by means of casting nozzles (5).
9. Use of the permanent mould according to one of claims 1 to 7, whereby the filling of n mould cavities (4) is effected by n simultaneous casting 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
CH811/82 1982-02-10
CH811/82A CH654500A5 (en) 1982-02-10 1982-02-10 PERMANENT MOLD WITH AT LEAST TWO MOLDING CAVIES ARRANGED SIDE BY EACH OTHER.

Publications (2)

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

Family

ID=4195728

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Family Cites Families (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
EP0085976A1 (en) 1983-08-17
CH654500A5 (en) 1986-02-28
ATE13495T1 (en) 1985-06-15
DE3360218D1 (en) 1985-07-04
AU1123683A (en) 1983-08-18
JPS58148047A (en) 1983-09-03
ZA83794B (en) 1983-10-26

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