EP0819487A1 - Dispositif et méthode de fabrication des pièces coulées sous pression - Google Patents
Dispositif et méthode de fabrication des pièces coulées sous pression Download PDFInfo
- Publication number
- EP0819487A1 EP0819487A1 EP97111435A EP97111435A EP0819487A1 EP 0819487 A1 EP0819487 A1 EP 0819487A1 EP 97111435 A EP97111435 A EP 97111435A EP 97111435 A EP97111435 A EP 97111435A EP 0819487 A1 EP0819487 A1 EP 0819487A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- vacuum
- suction line
- vacuum tank
- reference space
- 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
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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
- 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
- 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
- B22D17/32—Controlling equipment
Definitions
- the present invention relates to a device for production of die-cast parts with a die and one for controlled evacuation of a mold cavity provided suction device, which consists of a vacuum tank and one the vacuum tank and there is a suction line connecting the die, wherein the suction line has a first valve. Furthermore concerns the present invention a method of manufacture of die-cast parts.
- a generic device for the production of die-cast parts is known from DE 30 02 886 C2. With this as well in other known die casting machines with suction devices the last mold filling is used to vent the molds liquid metal in conjunction with the evacuation of the form within a few milliseconds. The goal is to get one if possible high vacuum in the mold cavity of the mold achieve the highest possible quality of the casting to reach.
- EP 0 600 324 A1 describes a method for producing a Vacuum in a vacuum die casting machine, in which the Vacuum to be applied to the die during the casting process is subject to a regulation. This is done using a vacuum valve applied vacuum by means of a switching valve so in its pressure curve regulates that the pressure in the mold cavity, in the casting chamber and in the suction pipe after a certain adjustable function regulates per time unit. The negative pressure is measured by a vacuum probe that measures the pressure in a Vacuum connection line measures.
- release agents and lubricants have in primarily the task of creating a separation layer between the liquid To produce metal and the contour of the mold, so that a Adhesion of the metal to the mold is prevented. This occurs especially when casting aluminum due to the high affinity of Aluminum to iron the mold.
- water-miscible release agents used for the generation of said barrier layer. Through this release agent an additional Cooling or tempering of the die is achieved.
- a disadvantage of these known devices and methods is however, that after removing the casting a new one Release agent application is required and when blowing dry the A residual moisture remains in the mold cavity. It can through the subsequent evacuation process of the mold a certain percentage of this residual moisture from the mold cavity created together with others during the casting process Gases are sucked off, but there always remains a certain Residual moisture content in the mold. This in the die remaining residual moisture reacts disadvantageously a subsequent pouring process with the liquid metal again with gas formation. The latter then takes the form of Porosity or cavities in the finished casting. This gives there is a significant reduction in the quality of the finished casting.
- the object of the present invention is therefore a generic To provide a device for the production of die-cast parts, which determines the residual moisture content in the die and regulated to a minimum.
- the device according to the invention for the production of die-cast parts has as an innovation two arranged in a suction line Valves on. Place the two valves connected in parallel the connection between a vacuum tank and a die forth or interrupt them. By closing the two Valves create a so-called reference space in the suction line. This reference space reflects the state that prevails than the last process of evacuating the die has ended. This makes it possible to easily parameters decisive for the quality of the die casting, in particular to determine the residual moisture content in the system and to control the device accordingly.
- the Device in the reference room at least one humidity sensor, a pressure sensor and / or a temperature sensor on. This ensures that depending on the requirements of the Quality of a specific casting the corresponding parameters can be tapped in the reference room.
- a second vacuum sensor is arranged on the vacuum tank.
- This second Vacuum sensor provides information about the quality of the maximum that can be achieved Vacuum or negative pressure in the die. The Correlation of this value with the actually measured values Standardization results in the die and the reference space and thus reproducibility of the environmental conditions for die casting.
- the casting process set so that the measured residual moisture depending on Die casting mold and part typical minimum reached and the process changes to a stable state. Surprisingly has been found to have a direct correlation between the residual moisture content in the die or the reference room and the level of vacuum or vacuum achieved.
- the process is continuous or discontinuous Measurement of the pressure in the vacuum tank.
- the method is carried out in method step e) Measurement in a time range of 10 - 30 seconds carried out. This ensures that the used Sensors experience a sufficiently long response time, whereby again an increase in measurement quality and accuracy is achieved becomes.
- the response times of the used are usually Sensors in a time range of approx. 15 seconds.
- the evacuation of the die is carried out in accordance with the procedure Process step a) up to a pressure of less than 50 mbar carried out. It could be determined that the Quality of the die casting or the die casting produced at such pressure ratios in the die improved.
- a device 10 shown schematically in FIG Manufacture of die castings essentially comprises one Die casting mold 12 and a suction device 16.
- the die casting mold 12 consists of a moving mold half 14 and a solid mold half, not shown.
- the suction device 16 consists in particular of a suction line 20 and a vacuum tank 18 connected thereto. At the vacuum tank 18 opposite end of the suction line is with the movable mold half 14 of the die 12 connected.
- the two valves 22, 24 can be designed as vacuum valves.
- the reference room 26 reflects the environmental parameters of the state that prevailed when the die casting process is complete and the evacuation the die 12 has been completed. To these environmental conditions To be able to determine as precisely as possible, it is advisable the reference space 26 as close as possible to those to be evacuated Arrange mold cavity of the die 12.
- Vacuum or vacuum sensor 32 is arranged. This serves for measuring the vacuum in the vacuum tank 18, this value the maximum height of the negative pressure to be reached and thus the reproduces the highest possible quality of the vacuum in the system.
- Another moisture sensor could also be attached to the vacuum tank 18 be arranged, the relative humidity in the vacuum tank 18 can measure and thus information about the minimum achievable There is residual moisture in the system.
- Dirt filter (not shown) arranged in the suction line. This filter is used in particular to keep solids away like metal particles and the like.
- All sensors 28, 30, 32 shown are not with one shown evaluation unit connected. Even automatically actuated valves 22, 24 are connected to this evaluation unit, the evaluation unit corresponding to the casting process controls the measured values determined.
- the reference space 26 Due to the relatively long response times in the reference room 26 arranged sensors 28, 30, 32, it is expedient to use the reference space 26 to be kept closed at least until the corresponding response time of the sensors has been reached. Usually this time period is in the range of approx. 15 seconds. The measurement carried out in method step e) is therefore in a time range of 10 - 30 seconds.
- process fluctuations can be recognized very easily and if necessary in the control flow into the device 10. This applies in particular to the Regulation of the blowing time after removing the casting from the Die casting mold 12 as well as the control of heating or cooling devices to regulate the temperature in the system.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19628870A DE19628870A1 (de) | 1996-07-17 | 1996-07-17 | Vorrichtung und Verfahren zur Herstellung von Druckgußteilen |
DE19628870 | 1996-07-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0819487A1 true EP0819487A1 (fr) | 1998-01-21 |
EP0819487B1 EP0819487B1 (fr) | 2002-04-17 |
Family
ID=7800105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97111435A Expired - Lifetime EP0819487B1 (fr) | 1996-07-17 | 1997-07-07 | Dispositif et méthode de fabrication des pièces coulées sous pression |
Country Status (6)
Country | Link |
---|---|
US (1) | US6125911A (fr) |
EP (1) | EP0819487B1 (fr) |
JP (1) | JP3383552B2 (fr) |
AT (1) | ATE216296T1 (fr) |
DE (2) | DE19628870A1 (fr) |
ES (1) | ES2173358T3 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3019772A1 (fr) * | 2014-04-14 | 2015-10-16 | Fondarex Sa | Dispositif et procede servant a mesurer l'humidite presente dans des moules de coulee sous pression |
CN110328346A (zh) * | 2016-11-04 | 2019-10-15 | 玛格纳Bdw科技有限责任公司 | 用于制造压铸件的设备、控制装置和过滤模块以及为此的方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE276063T1 (de) * | 1999-06-04 | 2004-10-15 | Mitsui Mining & Smelting Co | Druckgussverfahren von magnesiumlegierungen |
DE102006010560A1 (de) * | 2006-03-06 | 2007-09-13 | Pfeiffer Vacuum Gmbh | Vakuumdruckgussanlage und Verfahren zum Betrieb |
JP5770012B2 (ja) * | 2010-11-24 | 2015-08-26 | 東芝機械株式会社 | 品質管理装置及びダイカストマシン |
DE102012220513B4 (de) | 2012-11-12 | 2023-02-16 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zur Herstellung eines Druckgussteils |
MX2017013469A (es) | 2015-04-28 | 2018-03-01 | Consolidated Eng Company Inc | Sistema y metodo para tratamiento termico de piezas fundidas de aleacion de aluminio. |
DE102016221674B4 (de) | 2016-11-04 | 2020-06-18 | Magna BDW technologies GmbH | Steuerung für eine Vorrichtung zur Herstellung von Druckgussteilen |
DE102016221678B4 (de) * | 2016-11-04 | 2020-07-16 | Magna BDW technologies GmbH | Vorrichtung zur Herstellung von Druckgussteilen |
DE102016221675B4 (de) | 2016-11-04 | 2020-07-16 | Magna BDW technologies GmbH | Filtermodul für eine Vorrichtung zur Herstellung von Druckgussteilen |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3518635A1 (de) * | 1984-05-24 | 1985-11-28 | Nippondenso Co., Ltd., Kariya, Aichi | Druckgussverfahren und -vorrichtung |
JPH0768365A (ja) * | 1993-08-31 | 1995-03-14 | Nissan Motor Co Ltd | 真空ダイカストにおけるキャビティ湿度計測方法及び真空ダイカストにおける品質管理方法 |
US5511605A (en) * | 1993-07-07 | 1996-04-30 | Toshiba Kikai Kabushiki Kaisha | Method and apparatus for vacuum die casting |
JPH08141723A (ja) * | 1994-11-22 | 1996-06-04 | Aisan Ind Co Ltd | ダイカスト装置 |
JPH08243714A (ja) * | 1995-03-13 | 1996-09-24 | Honda Motor Co Ltd | ダイカスト鋳造における局部加圧方法および制御装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3002886A1 (de) * | 1980-01-28 | 1981-07-30 | Bayrisches Druckguß-Werk Thurner KG, 8015 Markt Schwaben | Druckgiessmaschine und verfahren zum betrieb derselben |
AU581966B2 (en) * | 1985-02-20 | 1989-03-09 | Ube Industries, Ltd. | Vertical injection apparatus for die casting machine |
JPS62220264A (ja) * | 1986-03-20 | 1987-09-28 | Kozo Kuroki | 真空ダイカスト装置 |
JPS63132760A (ja) * | 1986-11-25 | 1988-06-04 | Kobe Steel Ltd | 高品質金型鋳物のガス抜き方法 |
JPH0238067B2 (ja) * | 1987-01-13 | 1990-08-28 | Nerima Kogyo Kk | Shinkudaikasutochuzohohooyobisonosochi |
DE4123463A1 (de) * | 1991-07-16 | 1993-01-21 | Audi Ag | Verfahren zur herstellung von gussstuecken mittels einer druckgiessmaschine |
JP2676293B2 (ja) * | 1992-03-13 | 1997-11-12 | リョービ株式会社 | 層流射出成形機及び層流射出成形方法 |
DE4216773A1 (de) * | 1992-05-21 | 1993-11-25 | Kurt Loeffler Druckgus Gmbh & | Druckgußvorrichtung |
JP2587759B2 (ja) * | 1992-10-09 | 1997-03-05 | リョービ株式会社 | 鋳造機の排気ライン欠陥検出装置及び方法 |
JP2736491B2 (ja) * | 1992-11-25 | 1998-04-02 | リョービ株式会社 | 金型内ガス排出方法及びその装置 |
DE4239558A1 (de) * | 1992-11-25 | 1994-05-26 | Mueller Weingarten Maschf | Verfahren zur Unterdruck-Herstellung bei einer Druckgießmaschine |
-
1996
- 1996-07-17 DE DE19628870A patent/DE19628870A1/de not_active Withdrawn
-
1997
- 1997-07-07 EP EP97111435A patent/EP0819487B1/fr not_active Expired - Lifetime
- 1997-07-07 AT AT97111435T patent/ATE216296T1/de active
- 1997-07-07 DE DE59707015T patent/DE59707015D1/de not_active Expired - Lifetime
- 1997-07-07 ES ES97111435T patent/ES2173358T3/es not_active Expired - Lifetime
- 1997-07-15 JP JP19005097A patent/JP3383552B2/ja not_active Expired - Fee Related
- 1997-07-16 US US08/895,089 patent/US6125911A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3518635A1 (de) * | 1984-05-24 | 1985-11-28 | Nippondenso Co., Ltd., Kariya, Aichi | Druckgussverfahren und -vorrichtung |
US5511605A (en) * | 1993-07-07 | 1996-04-30 | Toshiba Kikai Kabushiki Kaisha | Method and apparatus for vacuum die casting |
JPH0768365A (ja) * | 1993-08-31 | 1995-03-14 | Nissan Motor Co Ltd | 真空ダイカストにおけるキャビティ湿度計測方法及び真空ダイカストにおける品質管理方法 |
JPH08141723A (ja) * | 1994-11-22 | 1996-06-04 | Aisan Ind Co Ltd | ダイカスト装置 |
JPH08243714A (ja) * | 1995-03-13 | 1996-09-24 | Honda Motor Co Ltd | ダイカスト鋳造における局部加圧方法および制御装置 |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 095, no. 006 31 July 1995 (1995-07-31) * |
PATENT ABSTRACTS OF JAPAN vol. 096, no. 010 31 October 1996 (1996-10-31) * |
PATENT ABSTRACTS OF JAPAN vol. 097, no. 001 31 January 1997 (1997-01-31) * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3019772A1 (fr) * | 2014-04-14 | 2015-10-16 | Fondarex Sa | Dispositif et procede servant a mesurer l'humidite presente dans des moules de coulee sous pression |
NL2014610A (en) * | 2014-04-14 | 2016-03-08 | Fondarex Sa | Device and Method for Measuring the Moisture in Die Casting Molds. |
AT515623A3 (de) * | 2014-04-14 | 2016-04-15 | Fondarex Sa | Vorrichtung und Verfahren zur Messung der Feuchtigkeit in Druckgiessformen |
CN110328346A (zh) * | 2016-11-04 | 2019-10-15 | 玛格纳Bdw科技有限责任公司 | 用于制造压铸件的设备、控制装置和过滤模块以及为此的方法 |
EP3593924A1 (fr) | 2016-11-04 | 2020-01-15 | MAGNA BDW technolgies GmbH | Module filtrant dans un dispositif de fabrication de pièces coulées sous pression |
Also Published As
Publication number | Publication date |
---|---|
EP0819487B1 (fr) | 2002-04-17 |
DE59707015D1 (de) | 2002-05-23 |
JPH10118752A (ja) | 1998-05-12 |
JP3383552B2 (ja) | 2003-03-04 |
ES2173358T3 (es) | 2002-10-16 |
US6125911A (en) | 2000-10-03 |
DE19628870A1 (de) | 1998-01-22 |
ATE216296T1 (de) | 2002-05-15 |
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