EP0894557A1 - Verfahren zum Formgiessen und Giessform für ein solches Verfahren - Google Patents
Verfahren zum Formgiessen und Giessform für ein solches Verfahren Download PDFInfo
- Publication number
- EP0894557A1 EP0894557A1 EP98104851A EP98104851A EP0894557A1 EP 0894557 A1 EP0894557 A1 EP 0894557A1 EP 98104851 A EP98104851 A EP 98104851A EP 98104851 A EP98104851 A EP 98104851A EP 0894557 A1 EP0894557 A1 EP 0894557A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- riser
- casting
- channel
- mold
- compound
- 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
Links
Images
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
- 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
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
Definitions
- the invention relates to a method for pouring a casting mold from below in increasing casting with one Casting compound from a casting container through a riser, the one for the inflow of the bottom into the mold ascending pouring compound in the molding sand of the Mold is molded, as well as a mold for one such procedure.
- the casting compound is one Delivery pressure exposed, which after the pouring still must be maintained long until the casting compound is solidified in the mold so that it does not Can pour back. Only then can the delivery pressure withdrawn and the filled against one new mold to be replaced for the next cast.
- Those for cooling those filled in the mold Casting time required slows down the casting process, because casting a mold in increasing Casting is a very rational process that is also suitable for Casting molds made of molding sand can be used can be produced quickly and in large quantities; the waiting times required for the casting compound to cool down are therefore particularly disruptive here.
- the object of the invention is therefore to such a method and an associated mold so to design that the promotional pressure for the promotion of Pour pouring compound from the pouring container into the mold immediately can be omitted if the mold is filled with casting compound is.
- the task with the features of Claim 1 solved.
- the mold and the casting container are flow decoupled in relation to the casting compound and the discharge pressure can be eliminated.
- a new mold can be connected to the pouring vessel immediately afterwards be that the casting process again already then can be initiated again if the previously cast form is not yet solidified.
- Such one Casting process is therefore advantageous in one continuous manufacturing process can be used.
- a particularly advantageous embodiment of the invention experiences the pouring process when in the pouring can Casting material available on the surface of a pneumatic Delivery pressure is exposed and the casting compound by at least one immersed in the casting compound, vertical riser pipe and through that with the riser pipe aligned and with this a common riser for the inflow of the casting compound forming the riser into the mold located above the riser is pressed.
- the entire riser runs here vertical and is one in the area of the riser Constriction made in the mold accessible.
- a thin gate valve for example a metal strip in which Rise channel transverse to its axis and its cross section is inserted covering.
- the metal strip can thereby from a pressure stamp or manually into the Area of the riser through the molding sand become. It is even easier if the riser is in a preferably short section through a cross exercised on its axis, shifting the molding sand and / or compressing punch force at least one preferably constricted hydraulically operated pressure stamp becomes; doing this is only by moving and / or compacting the molding sand of the riser, being immediately after the flow in the riser is interrupted, the delivery pressure the surface of the casting compound is turned off so that the desired continuous work process has been achieved, because the mold can now be replaced immediately.
- Casting mold is characterized, for example, that in the molding sand a preferably up reaching near the riser, across to the Axis of the riser oriented in the molding sand of the Mold molded or stamped with the pressure stamp Stamp channel is in which a plug can be provided and so by the pressure stamp in the Rising channel can be pressed that this is shut off.
- the stamp channel is designed as a slide guide in which a disc-shaped Slider is provided so that one in the Slider located, the flow cross section of the Riser adapted flow opening just with the Rise channel is aligned, the slide using the Stamp can be moved so far that the Riser is blocked.
- the riser lies either in or parallel to the mold plane of the mold, while the riser with a lying cast Casting mold is arranged perpendicular to the plane of the molded part.
- the stamp channel In the case of a cast mold lying horizontally, the stamp channel must be made wider so that insertion and a relative movement of the stamp to close of the riser is possible. More beneficial Refinements emerge from the subclaims forth.
- a mold 1, 2 consists of two vertically divided mold halves 1 and 2 with one of Mold cavity 3, in which a central, vertically downward, in the molding sand molded riser 4 opens; the riser 4 on the other hand ends with a best circular cross section on the free end face 10 also one vertically executed riser pipe 8, with the Rise channel 4 is aligned and with this one for one Casting compound 7 permeable riser 4, 8 as long forms, like the casting mold 1, 2 on a casting container 5, 6 is attached.
- the casting container 5, 6 settles out a crucible 6 and one placed on the crucible 6 Head piece 5 together, which seals the crucible 6 tightly and in addition to the centrally located riser pipe 8 still has a pipe socket 9, both above the surface 11 of those located in the crucible 6 liquid casting compound 7 ends.
- the casting compound 7 in the Mold cavity 3 is pressed when the mold 1, 2nd placed on the casting container 5, 6, the riser 4, 8 and the surface 11 a pneumatic
- the pipe socket is used to discharge pressure p 9 for flow connection of the casting container 5, 6 with a compressed air source.
- a hydraulic piston motor 12 is installed, whose stamp 13 in one on the axis of the riser 4 vertical direction 14 in the mold 1, 2 is movable and thereby a stamp printing on the molding sand contained therein.
- the pressure stamp exercises 13 its stamping force directly on the mold 1, 2 completely filling and only the mold cavity 3 and the riser 4 leaving molding sand on, with the pressure stamp 13 (Fig. 2) after the casting so far into the mold 1, 2 until the Rise channel 4 through compressed and in its cross section pressed molding sand is interrupted and so one Reflux of those already filled in the mold cavity 3 Casting compound 7 is prevented.
- a another, diametrically opposed to the first Stamp can be provided to be on the opposite Side of the casting mold 1,2 also the molding sand to burden accordingly and in this way the To be able to constrict riser duct 4 from two sides.
- a stamp channel 15 or 16 is molded into the casting mold 1, 2, the in the direction 14 and cross section of the pressure stamp 13 is adapted and up to the riser 4th (Fig. 3, 4) or beyond (Fig. 5, 6) is sufficient.
- stamp channel 15 alone according to FIG. 3 can serve to work the plunger 13 facilitate
- Such an execution is particularly advantageous if the molding sand is chemical is bound and the pressure stamp 13 accordingly opposes high resistance if this in the Molding sand is retracted.
- FIG. 5 Another embodiment of a casting arrangement according to the invention 5, 6 show before and after the casting.
- a slide 18 is inserted into the stamp channel 16, which is deeply immersed in the molding sand, that the slider 18 without further compression of the molding sand with the pressure stamp 13 after casting has been completed is displaceable that a provided in the slide 18, before and during the casting process (Fig. 5) in Area of the riser 4 and a part of the riser 4.8 forming flow opening 19 is not is more effective (Fig. 6), the mold 1,2 shuts off and so also a reflux of the casting compound 7 from the Mold 1,2 prevented.
- This pouring arrangement differs from that 1 to 6 essentially in that the Casting mold is poured lying, which gives the advantage results in a lower static pressure within the mold is built up.
- the mold becomes on a conveyor track 20 to the Transported casting arrangement, at which it is lowered, so that the riser pipe 8 lies tightly against the riser duct 4. Following this, the mold is placed over the riser 8 filled, as shown in Fig. 8.
- the Press piece 21, which engages in the stamp channel 15, is moved via a pneumatic cylinder 12, so that, as shown in Fig. 9, the sand in the riser channel 4 is pressed in and closes it.
- Fig. 10 shows the position in which the riser 4 closed and the press piece 21 withdrawn again is.
- the mold 1, 2 is then raised and transported away on the transport track 20. Otherwise this embodiment corresponds to that in FIGS 6 described, so that reference is made to this.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
- Fig. 1
- einen Längsschnitt durch eine für das erfindungsgemäße Verfahren geeignete Gießanordnung mit stehend abgegossener Gießform vor dem Abguß,
- Fig. 2
- die Anordnung der Fig. 1 unmittelbar nach dem Abguß und dem Verschließen des Steigkanals,
- Fig. 3
- eine Gießanordnung wie in Fig. 1 und 2 mit einer etwas veränderten Gießform,
- Fig. 4
- eine Gießanordnung wie in Fig. 3 mit einem speziellen Verschlußteil für den Steigkanal der Gießform,
- Fig. 5 und 6
- eine Gießanordnung mit einer weiteren Variante der Gießform aus Fig. 3 und
- Fig. 7 bis 10
- eine Gießanordnung für eine liegend abgegossene Gießform,
- 1
- Formhälfte
- 2
- Formhälfte
- 1,2
- Gießform
- 3
- Formhohlraum
- 4
- Steigkanal
- 5
- Kopfstück
- 6
- Tiegel
- 5,6
- Gießbehälter
- 7
- Gießmasse
- 8
- Steigrohr
- 4,8
- Steigleitung
- 9
- Rohrstutzen
- 10
- Stirnseite
- 11
- Oberfläche
- 12
- Kolbenmotor
- 13
- Druckstempel
- 14
- Richtung
- 15
- Stempelkanal
- 16
- Stempelkanal
- 17
- Pfropfen
- 18
- Schieber
- 19
- Durchflußöffnung
- 20
- Transportbahn
- 21
- Preßstück
Claims (11)
- Verfahren für das Abgießen einer Gießform (1,2) von unten in steigendem Guß mit einer Gießmasse (7) aus einem Gießbehälter (5,6) durch einen Steigkanal (4), der für die Einströmung der von unten in die Gießform (1,2) aufsteigend einlaufende Gießmasse (7) im Formsand der Gießform (1,2) eingeformt ist,
dadurch gekennzeichnet, daßunmittelbar nach beendeter Füllung der Gießform (1,2) der Steigkanal (4) im Bereich des Formsandes unterbrochen und damit so verschlossen wird, daß die Gießform (1,2) von dem Gießbehälter (5,6) abtrennbar ist. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die in dem Gießbehälter (5,6) vorrätige Gießmasse (7) auf ihrer Oberfläche (11) einem pneumatischen Förderdruck (p) ausgesetzt ist und die Gießmasse (7) durch mindestens ein in die Gießmasse (7) eintauchendes, senkrechtes Steigrohr (8) und durch den mit dem Steigrohr (8) fluchtenden und mit diesem eine gemeinsame Steigleitung (4,8) für die Einströmung der Gießmasse (7) bildenden Steigkanal (4) in die oberhalb des Steigrohres (8) befindliche Gießform (1,2) gedrückt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß ein Sperrschieber in den Steigkanal (4) quer zu dessen Achse und seinen Querschnitt abdeckend eingeschoben wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Steigkanal (4) durch eine auf den Formsand im wesentlichen quer zu seiner Achse ausgeübte und diesen verschiebende Kraft verschlossen wird.
- Verfahren nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß unmittelbar, nachdem die Strömung in dem Steigkanal (4) unterbrochen ist, der Förderdruck (p) auf die Oberfläche (11) der Gießmasse (7) abgestellt wird.
- Gießform für ein Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß in dem Formsand der Gießform ein nach außen hin offener Stempelkanal (15) eingeformt ist.
- Gießform nach Anspruch 6, dadurch gekennzeichnet, daß der Stempelkanal (15) bis in die Nähe des Steigkanals (4) reicht und quer zu der Achse des Steigkanals (4) orientiert ist.
- Gießform nach Anspruch 6, dadurch gekennzeichnet, daß der Stempelkanal (15) im wesentlichen parallel zum Steigkanal (4) verläuft.
- Gießform nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß in den Stempelkanal (16) ein Pfropfen (17) vorgesehen ist, der in den Steigkanal (4) drückbar ist und diesen absperrt.
- Gießform nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß der Stempelkanal (16) als Schieberführung ausgebildet ist und einen scheibenförmigen Schieber (18) aufnimmt, der eine dem Strömungsquerschnitt der Steigleitung (4,8) angepaßte Durchflußöffnung (19) aufweist, welche mit dem Steigkanal (4) fluchtet, wobei der Schieber (18) mit Hilfe des Druckstempels (13) soweit verschiebbar ist, daß der Steigkanal (4) gesperrt ist.
- Gießform nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, daß der Steigkanal (4) senkrecht oder parallel zur Formteilebene angeordnet ist.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19733485A DE19733485A1 (de) | 1997-08-01 | 1997-08-01 | Verfahren zum Formgießen und Gießform für ein solches Verfahren |
DE19733485 | 1997-08-01 | ||
CZ19984016A CZ9804016A3 (cs) | 1997-08-01 | 1998-12-07 | Způsob lití do forem a licí forma pro takovýto způsob |
US09/217,709 US6305460B1 (en) | 1997-08-01 | 1998-12-21 | Method for casting |
JP10374685A JP2000197960A (ja) | 1997-08-01 | 1998-12-28 | 鋳造方法およびこの方法のための鋳型 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0894557A1 true EP0894557A1 (de) | 1999-02-03 |
EP0894557B1 EP0894557B1 (de) | 2002-04-24 |
EP0894557B2 EP0894557B2 (de) | 2006-09-06 |
Family
ID=27430162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98104851A Expired - Lifetime EP0894557B2 (de) | 1997-08-01 | 1998-03-18 | Verfahren zum Formgiessen und Giessform für ein solches Verfahren |
Country Status (8)
Country | Link |
---|---|
US (1) | US6305460B1 (de) |
EP (1) | EP0894557B2 (de) |
JP (1) | JP2000197960A (de) |
AT (1) | ATE216642T1 (de) |
CZ (1) | CZ9804016A3 (de) |
DE (2) | DE19733485A1 (de) |
ES (1) | ES2173522T5 (de) |
PL (1) | PL327479A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1072341A1 (de) * | 1999-07-29 | 2001-01-31 | Heinrich Wagner Sinto Maschinenfabrik GmbH | Giesseinrichtung für eine Giessereiformanlage |
WO2001028712A1 (es) * | 1999-10-15 | 2001-04-26 | Loramendi, S.A. | Metodo de colada de metales en molde de arena verde y dispositivo de obturacion del canal de colada |
EP1097767A1 (de) * | 1999-11-06 | 2001-05-09 | Heinrich Wagner Sinto Maschinenfabrik GmbH | Verfahren und Vorrichtung zum Herstellen und Abgiessen einer aus zwei Formhälften bestehenden Giessform |
US6453978B1 (en) * | 1999-05-03 | 2002-09-24 | Heinrich Wagner Sinto Maschinenfabrik Gmbh | Method and an apparatus for filling of molds with liquidy metals |
CN102211166A (zh) * | 2010-04-02 | 2011-10-12 | 中煤张家口煤矿机械有限责任公司 | 铸铝件砂模低压铸造成型工艺 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2609899A (en) * | 1999-01-28 | 2000-08-18 | Georg Fischer Disa A/S | Casting method and apparatus |
US6644381B1 (en) * | 1999-07-02 | 2003-11-11 | International Engine Intellectual Property Company, Llc | Casting method and apparatus |
DE102009039595B4 (de) * | 2009-09-01 | 2020-10-15 | Daimler Ag | Niederdruckgießvorrichtung |
CN114210932B (zh) * | 2022-02-21 | 2022-04-22 | 龙口市和义机械配件有限公司 | 一种加快铁水流速的浇道优化结构及方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3905419A (en) * | 1970-09-29 | 1975-09-16 | Gravicast Patent Gmbh | Device for rise casting into a mold |
GB1410770A (en) * | 1971-12-03 | 1975-10-22 | Dimo Holdings | Methods and apparatus for casting metal |
WO1993011892A2 (en) * | 1991-12-07 | 1993-06-24 | Baxi Partnership Limited | Casting of light metal alloys |
WO1995032826A1 (en) * | 1994-05-27 | 1995-12-07 | Georg Fischer Disa A/S | Methods of closing the inlet in a mould after non-gravity casting with a non-ferrous alloy of green-sand moulds in a mould-string plant |
-
1997
- 1997-08-01 DE DE19733485A patent/DE19733485A1/de not_active Withdrawn
-
1998
- 1998-03-18 ES ES98104851T patent/ES2173522T5/es not_active Expired - Lifetime
- 1998-03-18 DE DE59803900T patent/DE59803900D1/de not_active Expired - Lifetime
- 1998-03-18 EP EP98104851A patent/EP0894557B2/de not_active Expired - Lifetime
- 1998-03-18 AT AT98104851T patent/ATE216642T1/de not_active IP Right Cessation
- 1998-07-14 PL PL98327479A patent/PL327479A1/xx unknown
- 1998-12-07 CZ CZ19984016A patent/CZ9804016A3/cs unknown
- 1998-12-21 US US09/217,709 patent/US6305460B1/en not_active Expired - Lifetime
- 1998-12-28 JP JP10374685A patent/JP2000197960A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3905419A (en) * | 1970-09-29 | 1975-09-16 | Gravicast Patent Gmbh | Device for rise casting into a mold |
GB1410770A (en) * | 1971-12-03 | 1975-10-22 | Dimo Holdings | Methods and apparatus for casting metal |
WO1993011892A2 (en) * | 1991-12-07 | 1993-06-24 | Baxi Partnership Limited | Casting of light metal alloys |
WO1995032826A1 (en) * | 1994-05-27 | 1995-12-07 | Georg Fischer Disa A/S | Methods of closing the inlet in a mould after non-gravity casting with a non-ferrous alloy of green-sand moulds in a mould-string plant |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6453978B1 (en) * | 1999-05-03 | 2002-09-24 | Heinrich Wagner Sinto Maschinenfabrik Gmbh | Method and an apparatus for filling of molds with liquidy metals |
US6460605B1 (en) * | 1999-05-03 | 2002-10-08 | Heinrich Wagner Sinto Maschinenfabrik Gmbh | apparatus for filling of molds with liquidy metals |
EP1072341A1 (de) * | 1999-07-29 | 2001-01-31 | Heinrich Wagner Sinto Maschinenfabrik GmbH | Giesseinrichtung für eine Giessereiformanlage |
TR200002194A3 (tr) * | 1999-07-29 | 2001-03-21 | Heinrich Wagner Sinto Maschinenfabrik Gmbh | Dökümhane kaliplama sistemi için bir döküm cihazi |
TR200002194A2 (tr) * | 1999-07-29 | 2001-03-21 | Heinrich Wagner Sinto Maschinenfabrik Gmbh | Dökümhane kalıplama sistemi için bir döküm cihazı |
WO2001028712A1 (es) * | 1999-10-15 | 2001-04-26 | Loramendi, S.A. | Metodo de colada de metales en molde de arena verde y dispositivo de obturacion del canal de colada |
US6659163B2 (en) | 1999-10-15 | 2003-12-09 | Loramendi, S.A. | Method for metal casting in green-sand molds and casting gutter sealing device |
EP1097767A1 (de) * | 1999-11-06 | 2001-05-09 | Heinrich Wagner Sinto Maschinenfabrik GmbH | Verfahren und Vorrichtung zum Herstellen und Abgiessen einer aus zwei Formhälften bestehenden Giessform |
CN102211166A (zh) * | 2010-04-02 | 2011-10-12 | 中煤张家口煤矿机械有限责任公司 | 铸铝件砂模低压铸造成型工艺 |
Also Published As
Publication number | Publication date |
---|---|
EP0894557B1 (de) | 2002-04-24 |
ES2173522T3 (es) | 2002-10-16 |
US6305460B1 (en) | 2001-10-23 |
CZ9804016A3 (cs) | 2001-08-15 |
ES2173522T5 (es) | 2007-05-01 |
PL327479A1 (en) | 1999-02-15 |
DE59803900D1 (de) | 2002-05-29 |
ATE216642T1 (de) | 2002-05-15 |
JP2000197960A (ja) | 2000-07-18 |
DE19733485A1 (de) | 1999-02-04 |
EP0894557B2 (de) | 2006-09-06 |
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