EP0761345A2 - Machine à couler sous pression à chambre chaude - Google Patents
Machine à couler sous pression à chambre chaude Download PDFInfo
- Publication number
- EP0761345A2 EP0761345A2 EP96113228A EP96113228A EP0761345A2 EP 0761345 A2 EP0761345 A2 EP 0761345A2 EP 96113228 A EP96113228 A EP 96113228A EP 96113228 A EP96113228 A EP 96113228A EP 0761345 A2 EP0761345 A2 EP 0761345A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hot chamber
- die casting
- chamber die
- machine according
- nozzle
- 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
- 238000004512 die casting Methods 0.000 title claims abstract description 33
- 238000005266 casting Methods 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 24
- 239000011777 magnesium Substances 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 5
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 238000011161 development Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 5
- 230000001939 inductive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 238000005507 spraying Methods 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
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2038—Heating, cooling or lubricating the injection unit
-
- 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 hot chamber die casting machine for processing magnesium melts, with a casting container with a riser tube with a cone-shaped mouthpiece and with a nozzle attached to the mouthpiece, and with a heating device for heating the nozzle and the mouthpiece area of the casting container.
- the casting container and the casting piston of the casting unit are located in the liquid metal. This means that the economy of the hot chamber process is significantly higher than that of the cold chamber process.
- the material magnesium is easy to cast and because of its low weight it is interesting for many applications.
- the processing temperature of magnesium is between 630 ° C and 660 ° C depending on the alloy. Because of this high temperature, it is necessary to provide heating for the nozzle and the casting container in hot chamber die casting machines of the type mentioned at the beginning. It is known to provide gas heating for the nozzle and the casting container attachment for this purpose.
- the present invention is therefore based on the object of proposing a heating system in a hot-chamber die casting machine for processing magnesium melts, with which, on the one hand, simple temperature monitoring is possible and with which the desired high temperatures can be achieved without, however, impairing safety .
- an inductively operating heating device is assigned to the mouthpiece area of the casting container and the nozzle, that all heating devices are operated at medium frequency (a frequency lying at the lower limit of the high frequency) and the Inductors are air-cooled.
- the invention is based on the consideration that even relatively low frequencies are sufficient to generate the necessary heating and that you can get by with a lower cooling capacity, the can be caused by air. The risk of water and magnesium reacting is safely eliminated in this way.
- Due to the inductive heating uniform heating of the nozzle and the casting container attachment can also be achieved in a relatively simple manner and can be carried out in a temperature-controlled manner.
- the operating frequencies for the heating device are in the order of 8 kHz to 15 kHz.
- the inductors can consist of helically wound, externally insulated copper tubes which are supplied with current and through which air flows.
- This configuration enables a relatively simple manufacture of the induction heating.
- an air inlet valve and at the other end an air outlet valve can be arranged, the latter being able to open more or less in a temperature-controlled manner, so that the controlled air cooling of the inductors can also be effected in a relatively simple manner.
- the copper tubes can be wound into sleeve bodies, which can then be pushed onto several cylindrical parts of the device to be heated.
- one of the sleeve bodies can be pushed onto a neck of the casting container which is cylindrical in the region of the mouthpiece, onto the region of the cylindrical nozzle adjoining this casting container region and onto the nozzle in the region of its mouthpiece.
- the sleeve body pushed onto the casting container attachment can project beyond this attachment and at least surround the connection area of the nozzle on the outside.
- a monitoring unit for blooming magnesium oxide can be provided within the sleeve body projecting from the casting container and between it and the nozzle, which is expediently used as a ring with a Contact loop is formed.
- the conical connection area of the nozzle can be provided with an O-ring for sealing in the area of the conical mouthpiece of the casting container, and it is possible to seal the casting container cover from that protruding part of the casting tank, ie So below the cylindrical approach to provide a sealing cord clamped between two flange rings.
- the inductor assigned to the nozzle can also have a conical outer contour, through which magnesium which may possibly splash backwards is inevitably discharged to the outside.
- the inductor running to the mouthpiece area can be provided with an edge overlapping the front end of the inductor seated on the cylindrical extension of the mouthpiece area.
- This edge can be formed in a simple manner by a flange is provided with an annular surface which is inclined towards the front end of the nozzle and towards the cylindrical region of the inductor.
- This ring surface also serves as a repellent surface for any splashing magnesium.
- a ring inductor placed around the casting container can be provided in the region of the crucible cover, which leads to an equalization of the temperature and to a higher process reliability.
- FIG. 1 shows part of a hot chamber die casting machine which is used for processing magnesium.
- the liquid magnesium is at temperatures of approx. 630-680 ° C inside the container (1), which is not shown in detail.
- a pouring container (3) projects into this container (1) through a cover (2) and has a riser bore (4) with a cone-shaped mouthpiece (5).
- the casting container (3) there is also a casting piston, not shown in any more detail, which is guided in a known manner from above into the casting cylinder (7) via the piston rod (6) and fills from the liquid container (1) with the amount of liquid to be poured , before the piston closes the filling opening during its movement and pushes the liquid metal up through the riser hole (4).
- a nozzle (8) is inserted into the mouthpiece (5) of the casting container (3), which extends with its mouthpiece (9) into the sprue area of the mold (10), which is only indicated schematically.
- a sleeve-shaped inductive heating element (12) is now pushed onto the approximately cylindrical extension (11) of the casting container (3).
- Two further sleeve-shaped inductive heating elements (13 and 14) are pushed onto the central area of the nozzle (8) or onto the area of the mouthpiece (9) of the nozzle (8). This can be done by pushing on the sleeve body (12) before the nozzle (8) is assembled, then inserting the nozzle (8) into its conical connection opening (5) and then the two sleeve bodies (13 and 14) be pushed onto the nozzle.
- the sleeve body (12) is placed on the neck (11) so that it projects beyond the front end.
- the sleeve body (12) also projects above a nut (15), which is screwed onto the nozzle (8) for later disassembly, and a monitoring device, which is on the inside of the sleeve body (12) in the form of a ring provided with a contact loop (16) is arranged.
- a mudguard (17) in front of the front end of the sleeve body (12), which is intended to prevent the undesirable penetration of magnesium melt which may splash backwards.
- the monitoring device (16) in the exemplary embodiment serves to detect magnesium efflorescence in the cavity (18) between the sleeve body (12) and the nozzle (8), which is caused, for example, by a leak between the attachment (11) and the nozzle (8) or also due to leaks in the area of the neck (19) of the casting container (3) and due to magnesium thereby reaching in the area within the sleeve body (12).
- Fig. 2 shows that for better sealing between the neck (11) of the casting container (3) and nozzle (8) an O-ring (20) has been applied to the cone area of the nozzle (8).
- a circumferential sealing cord (21) is provided, which is clamped between two flange rings (22 and 23) and thus the required seal between the cover (2) for the molten metal and the neck (19
- the flange ring (22) is firmly welded to the cover (2) .
- the flange ring (23) is made of asbestos-free ceramic material. This ensures that the inductive field is not disturbed otherwise be used optimally.
- FIG. 2 shows that the sleeve bodies (12, 13 and 14), which are designed as inductors, each consist of helically wound and externally insulated copper tubes (24), on which, as in Fig 4 is indicated schematically, both the frequency required for generating the alternating magnetic field is applied via a corresponding generator (25), and air is also applied in the direction of the arrow (26).
- the air supplied in the direction of arrow (26) serves as cooling air for the inductors. It exits via an outlet valve (27) which opens or closes under temperature control. With increasing temperature, which is determined by a sensor, the valve (27) opens more and more, so that when the tubes (24) become too hot during operation, there is a correspondingly better cooling by more air flowing through them.
- Fig. 4 shows that the copper tubes (24) can be easily wrapped around the sleeve bodies (12, 13 and 14).
- the inductors formed in this way which can be air-cooled, are provided with thermal insulation on the outside before being pushed into their corresponding mounting positions.
- the end face of the sleeve body (14) facing the mouthpiece (9) is also provided with a protective plate (28).
- the inductors are supplied from the generator (25) with a kind of medium frequency, ie with a frequency that is in the order of magnitude between 8 kHz and 15 kHz.
- air cooling is possible, which is made possible in particular by the special type of design of the inductors.
- the sleeve bodies (14 and 13) are pulled down from the nozzle (8) after the machine has been switched off. This can be done easily by hand. Subsequently, the sleeve body (12) is pulled down from the shoulder (11), which can also be done by hand, so that the nozzle (8) can then be dismantled in the known manner by actuating the push-off nut (15).
- This configuration also makes it possible, e.g. in the event of a brief standstill of the machine, pull the front sleeve body (14) over the nozzle tip in the retracted state, so that the correct temperature at the nozzle tip is immediately reached when starting the first shot.
- the inductor (14 ') which is pushed onto the area of the mouthpiece (9) of the nozzle (8) and which otherwise has the same structure as that in FIGS 3 and 4 explained inductors, has a conical outer contour (35) which is used to discharge magnesium spraying out between the mouthpiece (9) and the workpiece during the die casting process and from the area of the adjacent inductor (13 ') and the keep inductor (12 ') placed on the mouthpiece (11) of the casting container (3).
- This purpose also serves that the end of the inductor (14 ') facing the casting container and provided with the larger diameter has a protruding, circumferential edge (30) which overlaps a shoulder (31) at the front end of the inductor (13'). This overlap creates a seal between the adjacent inductors, which also reliably prevents magnesium from penetrating into the area between the inductors (13 'and 14') or even into the area between the inductors and the nozzle (8).
- the inductor (13 ') is in turn provided at its end facing the casting container (3) with a flange (36) which is provided with an oblique annular surface (34) towards the cylindrical outer circumference and towards the front end of the nozzle (8) which also serves as a repellent surface for splashing magnesium.
- This flange (36) is provided on the side facing the inductor (12 ') with a circumferential edge (32) which overlaps a recess (33) in the inductor (12'), so that a seal between the inductors also at this point is created.
- a ring inductor (40) is placed around the neck of the casting container (3) above the seal (21).
- This ring inductor (40) can be constructed in the same way as the inductors already described. It is operated at medium frequency.
- the ring inductor (40) can be formed in one piece and is then pushed axially over the neck of the casting container (3). However, it is also possible to construct the ring inductor (40) from two half-shells, each of which is placed on the neck of the casting container from the outside and then connected to one another.
- This ring inductor (40) serves to achieve the most uniform possible temperature distribution on the neck of the casting container (3). This can ensure the safety of the casting process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Induction Heating (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19531161 | 1995-08-24 | ||
| DE19531161A DE19531161C2 (de) | 1995-08-24 | 1995-08-24 | Warmkammer-Druckgießmaschine |
| DE19543805A DE19543805A1 (de) | 1995-08-24 | 1995-11-24 | Warmkammer-Druckgießmaschine |
| DE19543805 | 1995-11-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0761345A2 true EP0761345A2 (fr) | 1997-03-12 |
| EP0761345A3 EP0761345A3 (fr) | 1998-09-02 |
| EP0761345B1 EP0761345B1 (fr) | 2000-03-15 |
Family
ID=26017964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96113228A Expired - Lifetime EP0761345B1 (fr) | 1995-08-24 | 1996-08-17 | Machine à couler sous pression à chambre chaude |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5960854A (fr) |
| EP (1) | EP0761345B1 (fr) |
| JP (1) | JPH09122868A (fr) |
| AT (1) | ATE190532T1 (fr) |
| DE (1) | DE19531161C2 (fr) |
| ES (1) | ES2144177T3 (fr) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19853189C1 (de) * | 1998-11-18 | 2000-04-13 | Frech Oskar Gmbh & Co | Heizeinrichtung für den Hals eines Gießbehälters, insbesondere für eine Warmkammer-Druckgießmaschine |
| FR2789612A1 (fr) * | 1999-02-12 | 2000-08-18 | Gilles Curti | Procede et dispositif de moulage de matiere metallique par injection et procede pour modifier un moule d'injection |
| EP1354650A1 (fr) * | 2002-04-19 | 2003-10-22 | Salvatore Bonvegna | Buse pour machine de coulée sous pression |
| EP1825939A3 (fr) * | 2006-02-24 | 2007-12-26 | Oskar Frech GmbH + Co. KG | Dispositif de dosage pouvant être chauffé pour une machine à couler sous pression à chambre chaude |
| WO2013071926A3 (fr) * | 2011-11-15 | 2014-09-04 | Ferrofacta Gmbh | Buse de moulage sous pression et procédé de fonctionnement d'une buse de moulage sous pression |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19829191A1 (de) * | 1998-06-30 | 2000-01-05 | Be Automation Giesereitechnik | Druckvergiesseinrichtung |
| DE10080726B4 (de) * | 1999-02-10 | 2007-03-01 | Ju-Oh Inc., Hiratsuka | Form für eine Heißanguß-Spritzmaschine sowie Verfahren zum Herstellen derselben |
| EP1044743B1 (fr) * | 1999-04-13 | 2003-08-06 | Oskar Frech Gmbh & Co. | Machine à couler sous pression à chambre chaude |
| AU723887B3 (en) * | 2000-07-07 | 2000-09-07 | Liken Lin | Melting furnace of a die-casting machine |
| US6463694B1 (en) | 2000-10-06 | 2002-10-15 | Edward Manciet | Closed pesticide delivery and recovery system |
| DE50012864D1 (de) * | 2000-10-31 | 2006-07-06 | Frech Oskar Gmbh & Co | Einrichtung zur Herstellung von Metall-Druckgussteilen, insbesondere aus NE-Metallen |
| ATE419083T1 (de) * | 2003-02-13 | 2009-01-15 | Techmire Ltd C O Mr Stephen Ma | Druckgiessmaschine |
| ATE485178T1 (de) | 2004-03-26 | 2010-11-15 | Continental Reifen Deutschland | Fahrzeugluftreifen |
| US7341094B2 (en) * | 2005-05-02 | 2008-03-11 | Husky Injection Molding Systems Ltd. | Metallic alloy slurry dispenser |
| US20090000758A1 (en) | 2007-04-06 | 2009-01-01 | Ashley Stone | Device for Casting |
| KR101030223B1 (ko) * | 2009-01-23 | 2011-04-22 | 김경탁 | 다이캐스팅 전극 터미널 성형 장치 |
| DE102011050149A1 (de) * | 2010-11-17 | 2012-05-24 | Ferrofacta Gmbh | Druckgussdüse und Druckgussverfahren |
| ITMI20120950A1 (it) * | 2012-06-01 | 2013-12-02 | Flavio Mancini | Metodo e impianto per ottenere getti pressofusi in leghe leggere con anime non metalliche |
| US9925583B2 (en) | 2013-07-11 | 2018-03-27 | Crucible Intellectual Property, Llc | Manifold collar for distributing fluid through a cold crucible |
| FR3044943B1 (fr) * | 2015-12-11 | 2020-12-04 | Adm28 S Ar L | Embout d'injection pour machine de coulee, machine et procede de coulee faisant usage d'un tel embout |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR438781A (fr) * | 1911-01-12 | 1912-05-28 | United Shoe Machinery Co Fr | Perfectionnements dans les machines à clouer employées en cordonnerie |
| US2004959A (en) * | 1933-12-07 | 1935-06-18 | Whitehall Patents Corp | Method of manufacturing fastener stringers |
| US2520348A (en) * | 1947-12-05 | 1950-08-29 | Ajax Engineering Corp | Discharging apparatus |
| DE1164034B (de) * | 1962-08-04 | 1964-02-27 | Eckert G M B H Geb | Druckgiessvorrichtung mit hoehenverstellbarer Giessduese |
| DE1878490U (de) * | 1963-01-03 | 1963-08-29 | Ewald Schulte | Druckgussmaschine zur verarbeitung von zink- oder aehnlichen metallegierungen. |
| JPS5012050B1 (fr) * | 1970-08-20 | 1975-05-08 | ||
| DE2141551A1 (en) * | 1970-08-24 | 1972-04-20 | The Dow Chemical Co., Midland, Mich. (V.StA.) | Injection casting nozzle - air - cooled with temp control system |
| NL7115392A (fr) * | 1970-11-12 | 1972-05-16 | ||
| DE2425067A1 (de) * | 1974-05-24 | 1975-12-04 | Idra Pressen Gmbh | Giesseinrichtung, insbesondere zum vergiessen von magnesiumlegierungen auf warmkammer-druckgiessmaschinen |
| US4219068A (en) * | 1979-05-30 | 1980-08-26 | Dynacast International Limited | Die casting machine |
| DE4005129A1 (de) * | 1990-02-17 | 1991-08-22 | Degussa | Vorrichtung zur induktiven erwaermung von koerpern mittels hochfrequenter schwingungen |
| JP3049648B2 (ja) * | 1993-12-13 | 2000-06-05 | 日立金属株式会社 | 加圧成形方法および加圧成形機 |
-
1995
- 1995-08-24 DE DE19531161A patent/DE19531161C2/de not_active Expired - Fee Related
-
1996
- 1996-08-17 EP EP96113228A patent/EP0761345B1/fr not_active Expired - Lifetime
- 1996-08-17 ES ES96113228T patent/ES2144177T3/es not_active Expired - Lifetime
- 1996-08-17 AT AT96113228T patent/ATE190532T1/de active
- 1996-08-21 JP JP8219993A patent/JPH09122868A/ja active Pending
- 1996-08-26 US US08/703,127 patent/US5960854A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19853189C1 (de) * | 1998-11-18 | 2000-04-13 | Frech Oskar Gmbh & Co | Heizeinrichtung für den Hals eines Gießbehälters, insbesondere für eine Warmkammer-Druckgießmaschine |
| US6435260B1 (en) | 1998-11-18 | 2002-08-20 | Oskar Frech Gmbh & Co. | Hot-chamber diecasting machine |
| FR2789612A1 (fr) * | 1999-02-12 | 2000-08-18 | Gilles Curti | Procede et dispositif de moulage de matiere metallique par injection et procede pour modifier un moule d'injection |
| EP1354650A1 (fr) * | 2002-04-19 | 2003-10-22 | Salvatore Bonvegna | Buse pour machine de coulée sous pression |
| EP1825939A3 (fr) * | 2006-02-24 | 2007-12-26 | Oskar Frech GmbH + Co. KG | Dispositif de dosage pouvant être chauffé pour une machine à couler sous pression à chambre chaude |
| WO2013071926A3 (fr) * | 2011-11-15 | 2014-09-04 | Ferrofacta Gmbh | Buse de moulage sous pression et procédé de fonctionnement d'une buse de moulage sous pression |
| US9561540B2 (en) | 2011-11-15 | 2017-02-07 | Ferrofacta Gmbh | Die casting nozzle and method for operating a die casting nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0761345A3 (fr) | 1998-09-02 |
| ES2144177T3 (es) | 2000-06-01 |
| DE19531161A1 (de) | 1997-02-27 |
| EP0761345B1 (fr) | 2000-03-15 |
| DE19531161C2 (de) | 1999-05-20 |
| ATE190532T1 (de) | 2000-04-15 |
| JPH09122868A (ja) | 1997-05-13 |
| US5960854A (en) | 1999-10-05 |
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