EP0005239A1 - Procédé de moulage sous basse pression pour métaux, notamment métaux non-ferreux, ainsi que l'installation pour la réalisation de ce procédé - Google Patents
Procédé de moulage sous basse pression pour métaux, notamment métaux non-ferreux, ainsi que l'installation pour la réalisation de ce procédé Download PDFInfo
- Publication number
- EP0005239A1 EP0005239A1 EP79101257A EP79101257A EP0005239A1 EP 0005239 A1 EP0005239 A1 EP 0005239A1 EP 79101257 A EP79101257 A EP 79101257A EP 79101257 A EP79101257 A EP 79101257A EP 0005239 A1 EP0005239 A1 EP 0005239A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- melt
- pressure
- molten metal
- receiving recesses
- 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.)
- Withdrawn
Links
- 238000005266 casting Methods 0.000 title claims abstract description 105
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 59
- 239000002184 metal Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 38
- -1 iron metals Chemical class 0.000 title claims abstract description 9
- 150000002739 metals Chemical class 0.000 title claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 3
- 229910052742 iron Inorganic materials 0.000 title abstract description 3
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000005058 metal casting Methods 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000005429 filling process Methods 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000155 melt Substances 0.000 abstract description 11
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 238000004512 die casting Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000009969 flowable effect Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012768 molten material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010120 permanent mold casting Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
-
- 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
- B22D17/14—Machines with evacuated die cavity
-
- 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
Definitions
- the invention relates to a low-pressure casting method for metals, in particular non-ferrous metals, in which the molten metal moves into the mold cavity of a casting tool and is subjected to a pressure after the mold has been filled until it solidifies.
- the invention further relates to a device for carrying out the method with a casting tool, the mold cavity of which is connected to a pouring channel and an overflow channel and a device for pressing the molten metal into the melt-receiving recesses of the casting tool.
- the die casting process or the die casting process are mainly used.
- the molten metal to be cast is moved into the mold cavity via pouring channels, this process being carried out during die casting with high pressure and high flow velocities being applied to the melt entered in a casting cylinder.
- DE-AS 2 450 805 or DE-OS 1 458 061 it is known to apply a pressure after the mold filling process to the metal melt in the pouring system for the purpose of compression and to compensate for the volume shrinkage during solidification.
- the mold filling takes place at a low flow rate, as the molten metal is usually gravity-fed into the mold cavity via a pouring channel has a lower density and, in the case of intricate castings, a reproducibly good filling of the mold cavity proves to be extremely difficult.
- An improvement in this Regarding this is achieved by the so-called centrifugal casting process, but the better mold filling is purchased by a considerable expenditure on equipment.
- the melt-receiving recesses of the casting tool are made before the metal melt is entered First, it is evacuated and then the molten metal is pressed into the melt-receiving recesses of the casting tool at a low flow rate (relative to the flow rates of 20 to 120 m / sec used in conventional die casting). Subsequently, an excess of melt away from the casting (in the riser or overflow channel of the casting tool) is applied to the metal melt until it solidifies.
- the melt-receiving recesses of the casting tool are preferably evacuated to a negative pressure which is 0.1 to 0.9 at below atmospheric pressure.
- the holding pressure exerted on the excess melt away from the casting is preferably 2 to 10 bar, most preferably 5 to 6 bar. Since in the invention the metal melt is pressed into the melt-receiving recesses of the casting tool with low pressure, the mold filling process can also be carried out by drawing in the metal melt due to the negative pressure present.
- alloys with a high degree of purity which are anodizable, can be processed in a similar way to gravity die casting, but unlike die casting.
- Excess melt in the riser following the mold filling is subjected to a mechanical, preferably pneumatic, pressure, so that a part of the melt excess can flow back into the mold cavity in order to compensate for the volume shrinkage that occurs during solidification.
- the application of the melt away from the casting has the advantage that a sufficient amount of still flowable mass is always available, because the overflow channel or riser remote from the casting is easily dimensioned in this way can that the desired amount of molten metal remains in the flowable state during the holding pressure phase.
- the distances to be covered from the flowable mass to the mold cavity are relatively short, so that low pressures are sufficient because of the low pressure losses.
- the evacuation of the melt-receiving recesses of the casting tool before the mold is filled further ensures that the occurrence of air or gas inclusions is avoided even in the case of complicated castings, wherein the evacuation of the melt-receiving recesses is easier to implement than in the die-casting process, because of the lower pressures practically no sealing problems arise.
- the above-described low-pressure casting process according to the invention can also be used to produce thick-walled molded parts of high density and intricate shape free of air or gas inclusions from heat-treatable non-ferrous metal alloys with a high degree of purity, even from ferrous metals.
- certain difficulties arise in the production of molded parts with particularly large cross-sectional differences.
- the metal melt often solidifies so quickly in the areas of small wall thickness that beyond and on these areas the post-casting pressure can no longer be fully effective in order to compensate for the volume shrinkage.
- the double-sided pressing enables, if desired, work in the counterpressure process with the advantage that the germs in the molten metal, from which the solidification starts, are inhibited in terms of their growth, so that the solidification process, if desired, by targeted coordination can be influenced by pressure on and off the casting.
- a further development of the invention is characterized in that the pressure on the casting side is started before, at the same time as or after the application of the pressure via the excess melt away from the casting.
- the temporal sequence of the application of the pressure via the excess melt away from the casting and the metal melt present in the casting system is influenced by the respective special manufacturing conditions, in particular by the shape of the molded part, and can be optimally determined by corresponding preliminary tests.
- a hollow part covering the end of the overflow channel facing away from the mold cavity can be provided, the interior of which can optionally be connected to a vacuum source or a pressure source.
- the covering hollow part can either be a cup-like piston which is pushed closer into the relevant end of the overflow channel or a bell which can be brought into sealing engagement with a surface area of the casting tool surrounding the end of the overflow channel.
- a pressure sensor which responds to molten metal in the overflow channel at a predetermined fill level (with a corresponding gradient pressure).
- the pressure sensor can be a piezo quartz crystal that engages with a The end of a slide element slidably mounted in the casting tool stands, the other end of which is acted upon by the molten metal rising in the overflow channel in the region near the mold cavity.
- the injection device for pressing the molten metal into the mold cavity can have a twin piston which is composed of an outer and an inner piston part which is movable relative thereto, the two piston parts being concentric with one another and being pressurized separately.
- a twin piston which is composed of an outer and an inner piston part which is movable relative thereto, the two piston parts being concentric with one another and being pressurized separately.
- Such an injector is e.g. in DE-OS 14 58 061 and US-PS 36 05 871 described.
- the two piston parts initially move together until the recesses are filled, after which the outer piston part comes to a standstill, while the inner piston part with a smaller diameter for applying the pressure to the still molten in the injection cylinder Mass is moved into it.
- Another type of pressure application on the part of the angie system by means of a compressed gas is described in DE-AS 24 50 805. Reference is expressly made to the said publications.
- the low-pressure casting device essentially comprises three main components, namely a casting tool 1, an injection device and a holding pressure device 13.
- the casting tool 1 here consists of two halves 6, 7, which form melt-receiving recesses between them in the shown collapsed state, Assemble the mold cavity 3 which is part of an egg q , a lower pouring channel 2 extending between the latter and the injection device, and a riser or overflow channel adjoining the mold cavity at the top.
- the two tool halves 6, 7 can be moved towards or away from one another by means of a known mechanical or hydraulic closing and opening device.
- the lower end of the pouring channel 2 facing away from the mold cavity 3 is connected to the interior of a cylinder 9 of the injection device.
- a piston 10 connected to a hydraulic or pneumatic piston cylinder device 12 can be moved back and forth in the cylinder 9.
- a filling opening 11 is provided, through which the melt to be cast can be introduced into the cylinder.
- the injection device shown here has only the task, the molten material to press into the melt-receiving recesses of the casting tool, ie into the mold cavity 3, the pouring channel 2 and the riser or overflow channel 5. If, however, in addition to applying the pressure remote from the casting and a pressing on the casting side is desired, the injection device shown can be replaced by one with a twin piston (not shown), as will be described later.
- the device for applying the holding pressure away from the casting comprises a cup-shaped hollow part 13, which can be inserted in the manner of a piston into the end of the overflow channel 5 facing away from the mold cavity 3 and basically opening to the outside atmosphere and has a hollow interior, cf. . Fig. 2.
- a preferably pneumatically operated piston-cylinder device 15 is provided in axial alignment with the hollow part 13, which is held by a support bracket 16 attached to the casting tool 1 and its actuating piston via a piston rod 14 is connected to the cup-shaped hollow part 13.
- a bell 27 can also be provided, as indicated by dashed lines in FIG. 2, which carries a seal 18 on its lower end surface facing the overflow channel 5 or casting tool 1 .
- the seal 28 can come into sealing engagement with the tool surface extending around the mouth opening of the overflow channel 5 in order to form a space which is sealed off from the outside atmosphere and into which a pressure medium can be introduced or which can be evacuated.
- a substantially horizontally extending bore is formed in one of the two tool halves 6, 7 at a level of a narrowed, but not mandatory, transition bore between the overflow channel 5 and the mold cavity 3 .
- a slide element 17 is e.g. in the form of a plunger or a rod that can be moved in a pressure-tight manner.
- the slide element 17 is formed at its end facing the transition bore 4 such that it is flush with the inner wall of the bore 4, while the opposite other end of the slide element is in engagement with a pressure sensor 18, which is preferably a piezo quartz crystal.
- the signal emitted by the pressure sensor 18 is modulated and used to switch the valves described in more detail below from positive to negative pressure when a certain pressure is present in the overflow channel.
- the pneumatic system shown schematically in FIG. 1 for the device described above comprises a line 19 which is connected to the interior of the hollow part 13 or the bell 27 and which leads via a two-way valve 20 to a vacuum container 21 which is connected to a vacuum pump 22 .
- the three-way valve 25 is connected to the piston-cylinder device 25 via a line 26 for the up and down movement of the hollow part 13 or the bell 27 in connection.
- the injection device 9, 10, 12 shown in FIG. 1 with a simple piston can be replaced by one with a twin piston, as described e.g. is described in DE-OS 14 58 061 with the necessary additional units.
- the twin piston consists of a larger outer piston part which can be moved back and forth in the cylinder 9 and a smaller piston part which can be moved back and forth in a longitudinal bore of the larger piston part.
- the larger piston part is connected to a hydraulic actuating device which, when pressurized, advances both piston parts in the cylinder 9.
- a further hydraulic actuating device provided in the movement system of the outer piston part enables the smaller inner piston part to move independently of the movement of the outer piston part when the outer piston part has come to a standstill after the recesses in the casting tool have been filled with molten metal and because of the solidified outer skin of the cylinder 9 metal mass in front of the larger piston part can no longer be moved forward. Because of the smaller diameter of the inner piston part, however, there is still flowable metal melt in front of it, which can therefore be pressed into the recesses of the casting tool by advancing the inner piston part. This possibility is used to compensate for the volume shrinkage in the mold cavity during the holding phase in the manner described below. For the rest, reference is made to DE-OS 14 58 061 because of the structural design of the twin-piston injection device.
- a signal is generated via a switch, not shown, which acts on the three-way valve 25 so that the line 26 comes into contact with the pressure pump 24, so that the piston-cylinder device 15 the hollow part 13 or Bell 27 moved in sealing relation to the overflow channel 5.
- a further signal is generated via a switch, also not shown, which brings the two-way valve 20 into the passage position, so that the line 19 and thus the hollow parts 13, 27 are connected to the vacuum container 21 and the air and other gaseous products are sucked out of the interior of the hollow parts 13, 27, the overflow channel 4, 5, the mold cavity 3, the pouring channel 2 and the filling cylinder 9.
- the piston 10 pushes the injection device further forward and presses the metal melt located in the filling cylinder 9 into the mold cavity 3 via the pouring channel 2 at a low flow rate according to the invention.
- excess melt rises in the overflow channel 5, and at one certain Inclined pressure at the melt in the overflow channel in accordance with a certain signal value at the pressure sensor 18, the piston 10 of the injection device comes to a standstill and the valve 20 is moved back into its closed position and the valve 24 is moved into a position under further pressurization of the piston-cylinder device 15, in which previously the Line 19 connected to the vacuum source is now introduced via line 22 to a pressure medium, for example air or inert gas, emitted by pressure pump 24.
- a pressure medium for example air or inert gas
- the pressure medium flowing into the interior of the hollow parts 13 and 27 acts on the melt which has risen in the overflow channel 5 or is located in the mold cavity 3 with a certain pressure (holding pressure) which can be in the range from 2 to 10 bar, preferably 5 to 6 bar .
- the signal for switching from negative pressure to holding pressure on the melt rising in the overflow channel 5 can further be used in the embodiment with twin pistons to act on the hydraulic actuating device for the inner piston part of the twin piston in the filling cylinder 9, so that this is in the molten "core” "moves the metal mass in front of the twin piston in order to apply pressure on the pouring channel 2.
- the pressure on the casting side can be set in motion by means of the twin piston before, during or after the pressure-free pressing described, the choice of the correct timing depending in particular on the special shape of the molded part to be produced and can be easily determined by tests.
- the essential features of the method according to the invention are thus: Evacuation of the melt-receiving recesses of the casting tool to a suitable negative pressure, which e.g. 0.1 to 0.9 at below atmospheric pressure, inserting a certain amount of molten metal at a low flow rate (relative to the flow rates of 20 to 120 m / sec used in die casting) into the melt-receiving recesses of the casting tool and applying a pressure an excess of melt away from the casting in the melt-receiving recesses of the casting tool and, if appropriate, an additional pressure on the casting side via the molten metal present in the casting or injection system.
- a suitable negative pressure which e.g. 0.1 to 0.9 at below atmospheric pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782818442 DE2818442A1 (de) | 1978-04-27 | 1978-04-27 | Niederdruckgiessverfahren fuer metalle, insbesondere ne-metalle |
| DE2818442 | 1978-04-27 | ||
| DE2846519 | 1978-10-25 | ||
| DE19782846519 DE2846519A1 (de) | 1978-10-25 | 1978-10-25 | Niederdruckgiessverfahren fuer metalle, insbesondere ne-metalle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0005239A1 true EP0005239A1 (fr) | 1979-11-14 |
Family
ID=25774359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79101257A Withdrawn EP0005239A1 (fr) | 1978-04-27 | 1979-04-26 | Procédé de moulage sous basse pression pour métaux, notamment métaux non-ferreux, ainsi que l'installation pour la réalisation de ce procédé |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0005239A1 (fr) |
| JP (1) | JPS54151513A (fr) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0040919A3 (en) * | 1980-05-16 | 1982-09-08 | Walter M. Goldhamer | Pressure casting process and machine |
| EP0099104A3 (en) * | 1982-07-14 | 1984-02-22 | Institut Po Metalosnanie I Technologia Na Metalite | Pressure casting process |
| US4499941A (en) * | 1980-05-16 | 1985-02-19 | Goldhamer Walter M | Modified pressure casting process and machine |
| EP0241426A1 (fr) * | 1986-04-11 | 1987-10-14 | Schweizerische Aluminium Ag | Procédé et dispositif de coulée sous pression |
| EP0254680A1 (fr) * | 1986-07-21 | 1988-01-27 | Schweizerische Aluminium Ag | Procédé de moulage sous basse pression |
| EP0344010A1 (fr) * | 1988-05-25 | 1989-11-29 | Ahresty Corporation | Procédé de moulage sous pression |
| EP0648562A1 (fr) * | 1993-10-16 | 1995-04-19 | Maschinenfabrik Müller-Weingarten AG | Presse d'injection ou une machine à coulée sous pression |
| FR2720669A1 (fr) * | 1994-06-01 | 1995-12-08 | Buehler Ag Geb | Machine à mouler sous pression. |
| EP0733422A1 (fr) * | 1995-03-21 | 1996-09-25 | Alusuisse-Lonza Services AG | Procédé et dispositif pour la fabrication des articles métalliques moulés |
| EP1240960A3 (fr) * | 2001-03-15 | 2004-10-27 | Nissin Kogyo Co., Ltd | Procédé et dispositif pour la désoxydation pendant la coulée |
| EP1320434A4 (fr) * | 2000-08-25 | 2005-08-31 | Commw Scient Ind Res Org | Coulage sous pression d'aluminium |
| EP1670605A4 (fr) * | 2003-08-15 | 2006-12-06 | Commw Scient Ind Res Org | Systeme d'ecoulement pour moulage sous pression |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890365A (ja) * | 1981-11-25 | 1983-05-30 | Taiho Kogyo Co Ltd | アルミニウム合金の金型鋳造法 |
| JPS58224062A (ja) * | 1982-06-22 | 1983-12-26 | Akebono Brake Ind Co Ltd | 気体加圧式金型鋳造法 |
| JPS59106661U (ja) * | 1982-12-28 | 1984-07-18 | 本田技研工業株式会社 | 溶湯鍛造用金型 |
| JPH0241754A (ja) * | 1988-07-31 | 1990-02-09 | Asahi Tec Corp | 鋳造装置およびその装置を使用する方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT164875B (de) * | 1942-04-13 | 1949-12-27 | Philips Nv | Verfahren und Vorrichtung zum Gießen von Gegenständen, derart, daß ein Stoff in flüssigem Zustand in eine entlüftete Form eingesaugt wird |
| US3093871A (en) * | 1960-07-15 | 1963-06-18 | British Oxygen Co Ltd | Die casting and moulding machine |
| DE2337648A1 (de) * | 1972-08-17 | 1974-02-28 | Nippon Light Metal Co | Spritzgussmaschine |
| DE2419354A1 (de) * | 1973-05-09 | 1974-11-21 | Luft U Kaeltetechnik Veb K | Vergleichsdruck-messeinrichtung fuer piezoelektrische druckmessungen |
| DE2442294A1 (de) * | 1974-09-04 | 1976-03-18 | Heinz Hoelter | Verfahren zum giessen von metallen unter ausschluss von sich bildenden gasblasen unter der oberflaeche des gegossenen stueckes |
| DE2300666B2 (de) * | 1973-01-08 | 1977-12-15 | Inresa, Alfons Schultheiss Kg, 7541 Salmbach | Schmelz- und giessvorrichtung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5225859B2 (fr) * | 1972-03-03 | 1977-07-11 |
-
1979
- 1979-04-24 JP JP5075179A patent/JPS54151513A/ja active Pending
- 1979-04-26 EP EP79101257A patent/EP0005239A1/fr not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT164875B (de) * | 1942-04-13 | 1949-12-27 | Philips Nv | Verfahren und Vorrichtung zum Gießen von Gegenständen, derart, daß ein Stoff in flüssigem Zustand in eine entlüftete Form eingesaugt wird |
| US3093871A (en) * | 1960-07-15 | 1963-06-18 | British Oxygen Co Ltd | Die casting and moulding machine |
| DE2337648A1 (de) * | 1972-08-17 | 1974-02-28 | Nippon Light Metal Co | Spritzgussmaschine |
| DE2300666B2 (de) * | 1973-01-08 | 1977-12-15 | Inresa, Alfons Schultheiss Kg, 7541 Salmbach | Schmelz- und giessvorrichtung |
| DE2419354A1 (de) * | 1973-05-09 | 1974-11-21 | Luft U Kaeltetechnik Veb K | Vergleichsdruck-messeinrichtung fuer piezoelektrische druckmessungen |
| DE2442294A1 (de) * | 1974-09-04 | 1976-03-18 | Heinz Hoelter | Verfahren zum giessen von metallen unter ausschluss von sich bildenden gasblasen unter der oberflaeche des gegossenen stueckes |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0040919A3 (en) * | 1980-05-16 | 1982-09-08 | Walter M. Goldhamer | Pressure casting process and machine |
| US4499941A (en) * | 1980-05-16 | 1985-02-19 | Goldhamer Walter M | Modified pressure casting process and machine |
| EP0099104A3 (en) * | 1982-07-14 | 1984-02-22 | Institut Po Metalosnanie I Technologia Na Metalite | Pressure casting process |
| EP0241426A1 (fr) * | 1986-04-11 | 1987-10-14 | Schweizerische Aluminium Ag | Procédé et dispositif de coulée sous pression |
| EP0254680A1 (fr) * | 1986-07-21 | 1988-01-27 | Schweizerische Aluminium Ag | Procédé de moulage sous basse pression |
| EP0344010A1 (fr) * | 1988-05-25 | 1989-11-29 | Ahresty Corporation | Procédé de moulage sous pression |
| EP0648562A1 (fr) * | 1993-10-16 | 1995-04-19 | Maschinenfabrik Müller-Weingarten AG | Presse d'injection ou une machine à coulée sous pression |
| US5543105A (en) * | 1993-10-16 | 1996-08-06 | Maschinenfabrik Mueller-Weingarten Ag | Pressure diecasting or injection molding machine |
| FR2720669A1 (fr) * | 1994-06-01 | 1995-12-08 | Buehler Ag Geb | Machine à mouler sous pression. |
| EP0733422A1 (fr) * | 1995-03-21 | 1996-09-25 | Alusuisse-Lonza Services AG | Procédé et dispositif pour la fabrication des articles métalliques moulés |
| CH689448A5 (de) * | 1995-03-21 | 1999-04-30 | Alusuisse Lonza Services Ag | Verfahren und Vorrichtung zur Herstellung von Formteilen aus Metall. |
| EP1320434A4 (fr) * | 2000-08-25 | 2005-08-31 | Commw Scient Ind Res Org | Coulage sous pression d'aluminium |
| US7234505B2 (en) | 2000-08-25 | 2007-06-26 | Commonwealth Scientific And Industrial Research Organisation | Aluminium pressure casting |
| EP1240960A3 (fr) * | 2001-03-15 | 2004-10-27 | Nissin Kogyo Co., Ltd | Procédé et dispositif pour la désoxydation pendant la coulée |
| EP1670605A4 (fr) * | 2003-08-15 | 2006-12-06 | Commw Scient Ind Res Org | Systeme d'ecoulement pour moulage sous pression |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54151513A (en) | 1979-11-28 |
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| Publication | Publication Date | Title |
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