EP1193008B1 - Verfahren zur Herstellung eines Giessbehälters sowie Giessbehälter - Google Patents
Verfahren zur Herstellung eines Giessbehälters sowie Giessbehälter Download PDFInfo
- Publication number
- EP1193008B1 EP1193008B1 EP00117320A EP00117320A EP1193008B1 EP 1193008 B1 EP1193008 B1 EP 1193008B1 EP 00117320 A EP00117320 A EP 00117320A EP 00117320 A EP00117320 A EP 00117320A EP 1193008 B1 EP1193008 B1 EP 1193008B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- riser
- casting
- core
- region
- casting vessel
- 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 - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/02—Hot chamber machines, i.e. with heated press chamber in which metal is melted
- B22D17/04—Plunger machines
Definitions
- the invention relates to a method for producing a Casting container, in particular for hot chamber die casting machines, by placing the pouring container in particular from a heat-resistant Tool steel is cast in one piece, at least one Casting chamber and at least one riser are introduced.
- the invention also relates to the one produced by the method Casting container and a core for the production of Riser.
- DE-A 21 43 937 is a casting container for a hot chamber die casting machine can be seen in the one a pressure piston receiving pressure chamber and an adjoining one has a riser hole leading a mouthpiece.
- the pouring can is a casting made from a heat-resistant tool steel.
- the riser hole is cast in with the help of inserted sand cores. To make this possible, the riser hole is on one End axially out of the casting tank and is there closed by an inserted screw.
- the connection to the casting chamber takes place via a perpendicular to the riser hole extending channel, which is also by an inserted Core was made and externally also by a screw must be closed. Both the riser hole as well the cross channel must therefore be processed in a relatively complex manner become.
- approximately rectangular Transition creates pressure losses for the flowing melt, which adversely affects the speed of work.
- DE-A 39 17 487 proposed a casting tank for hot chamber die casting machines, in which a cast hole is cast in the area the mouth to the casting chamber and in the area of the mouthpiece bent tube is provided, which consists of at least two parts are welded together.
- the tube itself is different in the course of its extension Wall thicknesses, which are particularly enlarge in the elbow provided on the nozzle side.
- the pipe which has smooth inner contours and therefore a fluidic enables favorable deflection of the melting material, consists of several parts, the same must be cumbersome Positioned first and then together get connected. Also in the area of the weld seams it can be too temperature and / or when casting the pipe stress cracks occur, which in turn causes flow problems due to penetration of the material in the casting container the inside of the riser hole can come.
- the invention has for its object a method and to design a casting tank, the riser without Use of separate pipes and without major rework can be produced, but the same fluidic favorable properties like a pipe. Furthermore, a core is to realize the desired properties be designed in the area of the riser.
- This goal is achieved by at least the area the riser pipe by inserting a ceramic jacket formed, essentially smooth-walled core in the form is generated after the casting and molding phase removed from the cast container to form the riser becomes.
- a casting tank in particular for hot chamber die casting machines, the particular is cast in one piece from a heat-resistant tool steel and at least one casting chamber and at least one riser has at one end in a casting chamber opens and at its other end for receiving a spray nozzle runs out into a mouthpiece, the riser through Insertion and removal of one of the contours of the riser corresponding ceramic core is made, and that the Contour of the riser through a straight line and curved sections is formed.
- This goal is also achieved through a ceramic core with an essentially smooth-walled surface for production a riser in the area of a casting tank, in particular for a hot chamber die casting machine, consisting of one inside the other merging straight and curved sections, the rectilinear sections at least partially have different diameters.
- the ceramic core can be adapted to the contour of the riser and preferably consists of a composition (in mass%) of 75% to 85% SiO 2 and 15% to 25% ZrSiO 4 .
- the ceramic core is pressed to produce a smooth-walled surface, whereby different manufacturing processes (eg cold pressing) are available.
- the core is preferably in the area of the later nozzle Approach formed, which after the casting process to the corresponding Wall of the casting tank extends and thus offers external access to the core.
- Removal of this approach can now remove the residual material of the core, for example by high pressure Water, be removed or rinsed out. This will be simultaneous cleaned the riser now formed, so that none Core materials are more available.
- the riser is a clean image of the ceramic core and also shows all straight and curved sections.
- the casting container 1 which can be used in a hot chamber magnesium die casting machine described in DE-A 39 17 487.
- the casting container 1 contains a casting chamber 2, which is closed at the bottom by an inserted plug 21, and a riser pipe 3 connected to the latter.
- the area 6 of the riser 3 is also straight and runs approximately parallel to the casting chamber 2.
- a straight section 8 which ends in a mouthpiece 9 for receiving a nozzle, not shown.
- the riser 3 by using a cold-pressed ceramic core illustrated in Figure 4 of the composition (in% by mass) 80% SiO 2 and 20% ZrSiO 4 are produced, wherein the -. Then to approach 17 - with reference to Figure 5 in more detail above.
- a bore 10 was created, which can be closed again by means of a plug 11.
- the plug 11 is connected to the bore wall 10 'via weld seams 11'.
- the stopper 11 is preferably made of the same material as the casting container 1 itself.
- the inner contour 12 of the plug 11 corresponds to the inner contour of the riser.
- the bore 10 is provided in the area of the mouthpiece 9 (curved section 7), but can also be arranged in other areas, for example in curved sections 4 of the casting container 1 (see FIG. 4).
- the bore 10 extends to the outer wall 1 'and is therefore accessible from the outside to remove the core material.
- FIG. 4 The above statements also apply to FIG. 4. The same parts are therefore with the same reference numerals Mistake. The only difference in FIG. 4 is that the Bore 10 and therefore the plug 11 is not at the top End of the riser 3, but in the lower area of the same is arranged.
- the rectilinear sections 5, 6, 8 are in both Cases interconnected by curved sections 13, 14.
- the straight sections 5, 6, 8 have different diameters.
- the straightforward Section 5 a diameter of 20mm
- the straight line Section 6 a diameter of 18mm
- the straight line Section 8 have a diameter of 17mm.
- the approximation to the different diameters takes place over the curved sections 13 and 14. Since the rectilinear section 5 opens directly into the casting chamber 2 without further paragraphs, here are no the flow flow of the melt obstacles formed edges, so that the material easily the mouthpiece 9 and the adjoining nozzle can be.
- the working speed can be opposite the prior art can be significantly increased, wherein no damage in the area of the riser 3 can occur, as in the prior art according to DE-A 39 17 487 would be possible using a tube.
- the Casting container 1 preferably consists of a heat-resistant Tool steel.
- the ceramic core 15 now shows a ceramic core 15 in the composition (in mass%) 80% SiO 2 and 20% ZrSiO 4 .
- the surface 16 of the ceramic core 15 is smooth-walled, so that smooth-walled contours are also formed in the region of the riser pipe 2.
- the cross-sectional shape of the ceramic core 15 is approximately S-shaped, with straight-shaped sections 5 ', 6', 8 'being provided which are connected to one another via curved sections 13', 14 '.
- the ceramic core 15 has an extension 17 which is provided in the extension of the straight section 6 '.
- the projection 17 has a region 18 which runs conically in the direction of the curved section 13 ', the remaining region 19 being approximately cylindrical.
- Deviating from a ceramic core, such as that used to manufacture a 1 would be provided, the approach 17th not on the nozzle side, but on the casting chamber side.
- the Location of the approach 17 is first in each area of the G confusekernes 15 conceivable, but should preferably for better Removal of core material after completion of the Casting container 1 in the extension of the central axis 20 of the rectilinear section 6 ''. After manufacturing of the casting container 1 becomes at least a portion of the approach 17 removed, so that now for example a device can be put on or put on with high pressure water leads into the area of the remaining core material and the same smashed. The smashed core pieces or particles are either in the area of the casting chamber 2 or from the Mouthpiece 9 pushed out.
- the thickened area 9 ' forms the future mouthpiece 9 for receiving the nozzle.
- the rectilinear section 8 'in connection with the thickened area 9 ' is not at right angles on the central axis 20, but becomes acute, for example under at an angle of 5 °. This creates between the axis 20 of the straight section 6 'and the axis 22 of section 8 'an obtuse angle ⁇ .
- the central axis 21 of the straight section 5 ' is perpendicular to the central axis 20 of section 6 '.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
- Fig. 1
- einen Längsschnitt durch einen Gießbehälter nach der Erfindung,
- Fig. 2
- eine Seitenansicht des Gießbehälters nach Fig. 1,
- Fig. 3
- die Ansicht des Gießbehälters der Fig. 1 von unten, teilweise im Schnitt,
- Fig. 4
- einen Längsschnitt durch einen Gießbehälter ähnlich Fig. 1, jedoch in einer etwas abgewandelten Form, und
- Fig. 5
- die Darstellung eines glattwandigen Keramikkerns zur Herstellung eines Gießbehälters nach Fig. 4.
Claims (20)
- Verfahren zur Herstellung eines Gießbehälters (1), insbesondere für Warmkammer-Magnesium-Druckgießmaschinen, bei dem der Gießbehälter (1) insbesondere aus einem warmfesten Werkzeugstahl einstückig gegossen wird, wobei zumindest eine Gießkammer (2) und zumindest eine Steigleitung (3) eingebracht werden, dadurch gekennzeichnet, dass zumindest der Bereich der Steigleitung (3) durch Einlegen eines aus einem Keramikmaterial gebildeten, im wesentlichen glattwandigen Kernes (15) in die Form erzeugt wird, der im Anschluss an die Guss- und Ausformphase zur Bildung der Steigleitung (3) aus dem Gießbehälter (1) entfernt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass Kerne (15) mit der Zusammensetzung (in Masse-%) von 75% bis 85% SiO2 sowie 15% bis 25% ZrSiO4 eingesetzt werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zur Bildung von Kernentfernungsbohrungen (10) im Bereich des Gießbehälters (1) am jeweiligen Kern (15) mindestens ein Ansatz (17), insbesondere in Fortführung des die spätere Steigleitung (3) bildenden Abschnittes (6), angeformt wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kern (15) zur Erzeugung vorgebbarer Konturen der Steigleitung (3) mit geradlinigen (5', 6', 8') und gekrümmten Abschnitten (13', 14') versehen wird, wobei über gekrümmte Abschnitte (13', 14') miteinander verbundene geradlinige Abschnitte (5', 6', 8') zumindest teilweise nicht rechtwinklig zueinander angeordnet werden.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Kern (15) im Bereich seiner geradlinigen Abschnitte (5', 6', 8') zumindest teilweise mit unterschiedlichen Durchmessern versehen wird, wobei die Angleichung durch die gekrümmten Abschnitte (13', 14') herbeigeführt wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Kern (15) zumindest durch teilweise Entfernung des Ansatzes (17) und anschließende Zertrümmerung des bzw. der Restbereiche, insbesondere durch unter hohem Druck stehendes Wasser, entfernt wird.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zum Verschließen der durch den Ansatz gebildeten Bohrung (10) ein Stopfen (11) zum Einsatz gelangt, der im Bereich der Steigleitung (3) mit der jeweiligen Innenkontur (12) derselben versehen wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Stopfen (11) durch Gießen, insbesondere aus dem gleichen Material wie der Gießbehälter (1), hergestellt wird.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Stopfen (11) lagegerecht positioniert und anschließend mit dem Gießbehälter (1), insbesondere durch Schweißen (11'), verbunden wird.
- Gießbehälter, insbesondere für Warmkammer-Druckgießmaschinen, der insbesondere aus einem warmfesten Werkzeugstahl einstückig gegossen ist und zumindest eine Gießkammer (2) sowie zumindest eine Steigleitung (3 aufweist, die an ihrem einen Ende (4) in die Gießkammer (2) mündet und an ihrem anderen Ende (7) zur Aufnahme einer Spritzdüse in ein Mundstück (9) ausläuft, dadurch gekennzeichnet, dass die Steigleitung (3) durch Einbringung und Entfernung eines der Kontur der Steigleitung (3) entsprechenden Keramikkernes (15) hergestellt ist, und dass die Kontur der Steigleitung (3) durch ineinander übergehende geradlinige (5, 6, 8) und gekrümmte Abschnitte (13, 14) gebildet ist.
- Gießbehälter nach Anspruch 10, dadurch gekennzeichnet, dass die Steigleitung (3) mit einer in Richtung einer Außenwand (1') des Gießbehälters (1) verlaufenden verschließbaren Bohrung (10) versehen ist.
- Gießbehälter nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass die Bohrung (10) die Fortsetzung des längeren geradlinigen Abschnittes (6) bildet.
- Gießbehälter nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass die Bohrung (10) im Bereich des Mundstückes (9) zur Aufnahme der Spritzdüse vorgesehen ist.
- Gießbehälter nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass die Bohrung (10) durch einen, insbesondere durch Schweißen (11') darin festlegbaren Stopfen (11) verschließbar ist, der steigleitungsseitig mit der jeweiligen Innenkontur (12) in diesem Bereich der Steigleitung (3) versehen ist.
- Gießbehälter nach einem der Ansprüche 10 bis 14, dadurch gekennzeichnet, dass die geradlinig verlaufenden Abschnitte (5, 6, 8) der Steigleitung (3) zumindest teilweise mit unterschiedlichen Durchmessern versehen sind, wobei die Angleichung über die jeweiligen gekrümmten Abschnitte (13, 14) herbeiführbar ist.
- Keramikkern mit im wesentlichen glattwandiger Oberfläche (16) zur Erzeugung einer Steigleitung (3) im Bereich eines Gießbehälters (1), insbesondere für eine Warmkammer-Druckgießmaschine, bestehend aus ineinander übergehenden geradlinigen (5', 6', 8') und gekrümmten Abschnitten (13', 14'), wobei die geradlinigen Abschnitte (5', 6', 8') zumindest teilweise unterschiedliche Durchmesser aufweisen.
- Keramikkern nach Anspruch 16, gekennzeichnet durch einen geradlinig verlaufenden Ansatz (17) im Bereich eines der gekrümmten Abschnitte (13', 14').
- Keramikkern nach Anspruch 16 oder 17, dadurch gekennzeichnet, dass der Ansatz (17) in Verlängerung des längeren geradlinigen Abschnittes (6') vorgesehen ist.
- Keramikkern nach einem der Ansprüche 16 bis 18, dadurch gekennzeichnet, dass der Kern (15) aus (in Masse-%) 75% bis 85% SiO2 und 15% bis 25% ZrSiO4 besteht und durch Verpressung hergestellt ist.
- Keramikkern nach einem der Ansprüche 16 bis 19, dadurch gekennzeichnet, dass zumindest einer der geradlinigen Abschnitte (8') unter einem stumpfen Winkel (α) zur Mittellinie (20) eines weiteren geradlinigen Abschnittes (6') vorgesehen ist.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50000293T DE50000293D1 (de) | 2000-08-21 | 2000-08-21 | Verfahren zur Herstellung eines Giessbehälters sowie Giessbehälter |
AT00117320T ATE220587T1 (de) | 2000-08-21 | 2000-08-21 | Verfahren zur herstellung eines giessbehälters sowie giessbehälter |
ES00117320T ES2177495T3 (es) | 2000-08-21 | 2000-08-21 | Procedimiento para la fabricacion de un recipiente de colada y recipiente de colada. |
EP00117320A EP1193008B1 (de) | 2000-08-21 | 2000-08-21 | Verfahren zur Herstellung eines Giessbehälters sowie Giessbehälter |
HK02105407.4A HK1043756B (zh) | 2000-08-21 | 2002-07-22 | 澆注容器的製造方法和澆注容器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00117320A EP1193008B1 (de) | 2000-08-21 | 2000-08-21 | Verfahren zur Herstellung eines Giessbehälters sowie Giessbehälter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1193008A1 EP1193008A1 (de) | 2002-04-03 |
EP1193008B1 true EP1193008B1 (de) | 2002-07-17 |
Family
ID=8169502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00117320A Expired - Lifetime EP1193008B1 (de) | 2000-08-21 | 2000-08-21 | Verfahren zur Herstellung eines Giessbehälters sowie Giessbehälter |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1193008B1 (de) |
AT (1) | ATE220587T1 (de) |
DE (1) | DE50000293D1 (de) |
ES (1) | ES2177495T3 (de) |
HK (1) | HK1043756B (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2143937B2 (de) * | 1971-09-02 | 1977-05-18 | Oskar Frech, Werkzeugbau, 7061 Weiler | Giessbehaelter fuer eine warmkammer- druckgiessmaschine |
DE3917487A1 (de) * | 1989-05-30 | 1990-12-06 | Frech Oskar Gmbh & Co | Giessbehaelter fuer warmkammer-druckgiessmaschinen |
US5779809A (en) * | 1995-12-26 | 1998-07-14 | General Electric Company | Method of dissolving or leaching ceramic cores in airfoils |
-
2000
- 2000-08-21 EP EP00117320A patent/EP1193008B1/de not_active Expired - Lifetime
- 2000-08-21 AT AT00117320T patent/ATE220587T1/de active
- 2000-08-21 DE DE50000293T patent/DE50000293D1/de not_active Expired - Lifetime
- 2000-08-21 ES ES00117320T patent/ES2177495T3/es not_active Expired - Lifetime
-
2002
- 2002-07-22 HK HK02105407.4A patent/HK1043756B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
HK1043756B (zh) | 2003-01-24 |
DE50000293D1 (de) | 2002-08-22 |
ES2177495T3 (es) | 2002-12-16 |
EP1193008A1 (de) | 2002-04-03 |
HK1043756A1 (en) | 2002-09-27 |
ATE220587T1 (de) | 2002-08-15 |
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