[go: up one dir, main page]

WO2004098817A1 - Element d'arret coulissant d'ecoulement metallique dans un processus de coulage - Google Patents

Element d'arret coulissant d'ecoulement metallique dans un processus de coulage Download PDF

Info

Publication number
WO2004098817A1
WO2004098817A1 PCT/AU2004/000588 AU2004000588W WO2004098817A1 WO 2004098817 A1 WO2004098817 A1 WO 2004098817A1 AU 2004000588 W AU2004000588 W AU 2004000588W WO 2004098817 A1 WO2004098817 A1 WO 2004098817A1
Authority
WO
WIPO (PCT)
Prior art keywords
sliding closure
mould
composite
casting moulds
shut
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.)
Ceased
Application number
PCT/AU2004/000588
Other languages
English (en)
Inventor
Robert J. Bend
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.)
Castalloy Manufacturing Pty Ltd
Equipment Merchants International (EMI) Inc
Original Assignee
Castalloy Manufacturing Pty Ltd
Equipment Merchants International (EMI) Inc
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 Castalloy Manufacturing Pty Ltd, Equipment Merchants International (EMI) Inc filed Critical Castalloy Manufacturing Pty Ltd
Priority to US10/555,683 priority Critical patent/US20070000635A1/en
Publication of WO2004098817A1 publication Critical patent/WO2004098817A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C19/00—Components or accessories for moulding machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/086—Filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/24—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings characterised by a rectilinearly movable plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/28—Plates therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001—Retaining slag during pouring molten metal
    • B22D43/004—Retaining slag during pouring molten metal by using filtering means

Definitions

  • the present invention relates to the sand casting of metals and more particularly to the use of a composite shut-off that isolates the mould from the launder, and seals the liquid in the casting during the sand moulds rotation through 180°.
  • a further object of the invention is to provide a means for effecting isolation and sealing of the mould so as to prevent drain back of metal from the mould gating into the launder.
  • Known casting methods rotate the mould whilst it is connected to the metal source pump and launder. When the rotation is complete the pressure on the mould is reduced to bias level, which is the top of the launder. This action allows liquid metal in the gating to flow back into the pump launder contaminating the metal to be used in subsequent casting operations.
  • Yet a further object of the invention is to provide a means for effecting isolation and sealing of the mould, wherein when the slide is in the open position, it is filtering the molten metal passing there through, thereby removing undesirable inclusions.
  • a composite shut-off means for casting moulds including a sliding closure with at least one passageway passing through it, wherein in use, when in a first open position the passageway is positioned so as to allow the passage of molten metal there through, into the mould, and in a second closed position, the molten metal is unable to pass through the passageway and the sliding closure seals the mould, preventing the entry of molten metal into the mould.
  • the invention may be said to lie in a composite shut-off means for casting moulds, including a sliding closure that includes sealing means, and molten metal filtering means, wherein said shut-off means is the interface between the metal source and the mould.
  • the sliding closure is operable by way of sliding it substantially transverse to metal flow.
  • the sliding closure, and the means for retaining said sliding closure are attached to the mould, so that in use, the mould can be closed and sealed by the sliding closure, and removed from the launder.
  • the sliding closure is a rectangular plate element having an aperture or passageway passing there through.
  • the sliding closure is a composite construction of sand, binding agent and compressive refractory material.
  • the sliding closure sealing means includes a gasket made of compressive refractory material.
  • the sliding closure utilises the compressive properties of the composite refractory material, such that in use, the pressure from the launder compresses the sliding closure, thereby effecting a seal.
  • the filtering means uses either a stainless steel or fibreglass screen covering the aperture or passageway in the sliding closure.
  • the sliding closure is actuated by a pneumatic or hydraulic cylinder.
  • the invention may be said to lie in a method of actuating a composite shut-off means for casting moulds that includes a sliding closure, wherein there is a production system utilising a carousel that retains the mould, in which the motion of the carousel indexing is used rotate the carousel and the mould relative to the sliding closure, which is held in a fixed position via interference with the launder.
  • the invention may be said to lie in a method of actuating a composite shut-off means for casting moulds that includes a sliding closure, wherein the launder is attached to a positionable, and programmable three-axis gantry, and the launder actuates the sliding closure via an interference with the sliding closure.
  • Figure 1 is a detail top elevation of the shut-off slide
  • Figure 2 is an end elevation of the shut-off slide shown in Fig 1 ,
  • Figure 3 is a cross-sectional view through a casting mould illustrating the operation of the shut-off slide, wherein the slide is in the open position
  • Figure 4 is a cross-sectional view through the casting mould illustrating the operation of the shut-off slide, wherein the slide is in the closed position
  • Figure 5 is a cross-sectional view through the casting mould illustrating the mould post separation from the launder, and subsequent inversion.
  • shut-off gate 1 There is a sliding closure, or shut-off gate 1 having a passageway or aperture 2 passing there through.
  • the slide is a composite construction of sand 3, binding agent and compressive refractory material 4, and the aperture 2 has a filter screen 5 covering it.
  • This filter screen 5 may be either a stainless steel or fibreglass screen, and its purpose is to remove any undesirable inclusions from the molten metal before they can get into the mould 6, and therefore the cast product.
  • a significant advantage of these composite slides is they can be reclaimed in the same manner as the remainder of the mould 6, post casting.
  • casting launder 7 which can provide molten metal 8 to the mould via the passageway 2 in the sliding closure 1 when the gate is in the open position 9.
  • the passageway 2 When the sliding closure 1 is in a first open position 9, the passageway 2 is positioned so as to allow the passage of molten metal 8 there through, into the mould 6.
  • the sliding closure 1 When the sliding closure 1 is in a second closed position 10, the molten metal is unable to pass through the passageway and the sliding closure seals the mould, preventing the entry of molten metal into the mould, thereby isolating the mould 6 from the launder 7.
  • the full mould 6 can then be separated from the launder and rotated while a fresh mould 15 is filling.
  • the sliding closure When in a closed position 10 on the launder, the sliding closure utilises the pressure from the launder to compress the composite refractory material 4 in the sliding closure, thereby effecting the seal discussed in the paragraph above.
  • the sliding closure 1 can be actuated by either a pneumatic or hydraulic cylinder. Alternatively, it can be opened and closed utilising a carousel that retains the mould 6, in which the motion of the carousel indexing is used rotate the carousel and the mould relative to the sliding closure, which is held in a fixed position via interference with the launder 7.
  • Another method of actuating the sliding closure involves attaching the launder 7 to a positionable, and programmable three-axis gantry (not shown); the launder 7 then actuates the sliding closure via an interference with the sliding closure 1.
  • a further method still of activating the sand slide might make use of a robot that manipulates the sand mould prior, during and after the casting cycle. This robot then would replace the carousal discussed above, in that it is the robot that moves the mould relative to the sliding closure, which is held in place due to the interference with the launder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un élément d'arrêt composite pour moules de coulage, notamment une fermeture coulissante fabriquée à partir de sable et d'un matériau réfractaire compressif. Ladite fermeture comprend un passage qui la traverse de sorte à permettre le passage sélectif du métal en fusion, ainsi qu'un élément de filtration servant à filtrer le métal en fusion à mesure qu'il traverse ledit passage. Des éléments destinés à retenir la fermeture coulissante sont fixés sur le moule, de sorte qu'en fonctionnement le moule puisse être fermé et scellé par la fermeture coulissante, et retiré du chenal de coulée.
PCT/AU2004/000588 2003-05-07 2004-05-07 Element d'arret coulissant d'ecoulement metallique dans un processus de coulage Ceased WO2004098817A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/555,683 US20070000635A1 (en) 2004-05-07 2004-05-07 Slide shutoff for metal flow in a casting process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003902165A AU2003902165A0 (en) 2003-05-07 2003-05-07 Slide shutoff for metal flow in corecast process
AU2003902165 2003-05-07

Publications (1)

Publication Number Publication Date
WO2004098817A1 true WO2004098817A1 (fr) 2004-11-18

Family

ID=31953517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2004/000588 Ceased WO2004098817A1 (fr) 2003-05-07 2004-05-07 Element d'arret coulissant d'ecoulement metallique dans un processus de coulage

Country Status (2)

Country Link
AU (1) AU2003902165A0 (fr)
WO (1) WO2004098817A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053939A1 (de) * 2004-09-24 2006-04-20 Robotec Engineering Gmbh Anlage und Verfahren zum automatischen Einsetzen von Gießfiltern in Gussformen
WO2010108583A1 (fr) 2009-03-25 2010-09-30 Merck Patent Gmbh Procédé de séparation énantiomérique de dérivés de 3,6-dihydro-1,3,5-triazine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163376A (en) * 1984-06-19 1986-02-26 Flo Con Syst Valve
US4966315A (en) * 1988-08-31 1990-10-30 Metacon Ag Refractory plate assembly for a three-plate sliding closure unit
WO1992007674A1 (fr) * 1990-11-05 1992-05-14 Comalco Aluminium Limited Coulage d'objets metalliques
WO1994025200A1 (fr) * 1993-04-29 1994-11-10 Baxi Partnership Limited Dispositif de fermeture hermetique pour l'orifice d'entree d'un moule a sable
WO1997033712A1 (fr) * 1996-03-12 1997-09-18 Flogates Limited Vanne a obturateur coulissant
WO2000040358A1 (fr) * 1999-01-06 2000-07-13 Vesuvius Crucible Company Ensemble refractaire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163376A (en) * 1984-06-19 1986-02-26 Flo Con Syst Valve
US4966315A (en) * 1988-08-31 1990-10-30 Metacon Ag Refractory plate assembly for a three-plate sliding closure unit
WO1992007674A1 (fr) * 1990-11-05 1992-05-14 Comalco Aluminium Limited Coulage d'objets metalliques
WO1994025200A1 (fr) * 1993-04-29 1994-11-10 Baxi Partnership Limited Dispositif de fermeture hermetique pour l'orifice d'entree d'un moule a sable
WO1997033712A1 (fr) * 1996-03-12 1997-09-18 Flogates Limited Vanne a obturateur coulissant
WO2000040358A1 (fr) * 1999-01-06 2000-07-13 Vesuvius Crucible Company Ensemble refractaire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053939A1 (de) * 2004-09-24 2006-04-20 Robotec Engineering Gmbh Anlage und Verfahren zum automatischen Einsetzen von Gießfiltern in Gussformen
DE102004053939B4 (de) * 2004-09-24 2007-06-21 Robotec Engineering Gmbh Anlage und Verfahren zum automatischen Einsetzen von Gießfiltern in Gussformen
WO2010108583A1 (fr) 2009-03-25 2010-09-30 Merck Patent Gmbh Procédé de séparation énantiomérique de dérivés de 3,6-dihydro-1,3,5-triazine
DE102009014898A1 (de) 2009-03-25 2010-09-30 Merck Patent Gmbh Prozess zur Enantiomerentrennung von 3,6-Dihydro-1,3,5-triazinderivaten

Also Published As

Publication number Publication date
AU2003902165A0 (en) 2003-05-22

Similar Documents

Publication Publication Date Title
US2181157A (en) Method and apparatus for pressure casting
DE69311981T2 (de) Unterdruckgiessverfahren und Vorrichtung
US7134479B2 (en) Apparatus and method for low pressure sand casting
US5908065A (en) Apparatus and method for squeeze casting
CN102784902B (zh) 金属型调压铸造设备
US20010050156A1 (en) Molding process for the mass production of aluminum alloy castings and associated items of equipment
US20070000635A1 (en) Slide shutoff for metal flow in a casting process
WO2004098817A1 (fr) Element d'arret coulissant d'ecoulement metallique dans un processus de coulage
US4037644A (en) Process for casting steel ingots under a vacuum
US5301739A (en) Method for casting and densification
DE1910707A1 (de) Vorrichtung und Verfahren zum Abgiessen von Schmelzen
WO2012055245A1 (fr) Procédé de coulée centrifuge fermée
DE69924726T2 (de) Feingiessen unter verwendung einer abdichtbaren druckkappe
CN109304448A (zh) 一种坩埚炉式加压凝固铝合金大件成型机
CN109940130A (zh) 一种利用电磁铁原理进行吸附灌浆制壳的方法
DE2133421A1 (de) Verfahren und vorrichtung zum dauerformguss von metallen und legierungen
US4887661A (en) Casting mold for foundry castings
KR101061733B1 (ko) 구리 및 알루미늄이 함유된 저압 주조로 제작된 알루미늄 청동 계열의 버터플라이 밸브의 디스크 및 이의 제조 방법
FI96583B (fi) Valamisprosessissa käytettävä laite
JPH07290225A (ja) 減圧鋳造方法および装置
JP2830714B2 (ja) 減圧鋳造装置
JP3721566B2 (ja) 減圧鋳造装置
EP0085726B1 (fr) Procédé et appareil pour le moulage par injection verticale
DE19945547A1 (de) Verfahren zum Vollformgießen mit nachfolgender Gasdruckbeaufschlagung
SU457538A1 (ru) Способ лить под низким давлением

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2007000635

Country of ref document: US

Ref document number: 10555683

Country of ref document: US

122 Ep: pct application non-entry in european phase
WWP Wipo information: published in national office

Ref document number: 10555683

Country of ref document: US