EP1531021A1 - Giessverfahren zur Herstellung eines Gussteils - Google Patents
Giessverfahren zur Herstellung eines Gussteils Download PDFInfo
- Publication number
- EP1531021A1 EP1531021A1 EP04026028A EP04026028A EP1531021A1 EP 1531021 A1 EP1531021 A1 EP 1531021A1 EP 04026028 A EP04026028 A EP 04026028A EP 04026028 A EP04026028 A EP 04026028A EP 1531021 A1 EP1531021 A1 EP 1531021A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- mold
- molding material
- molding
- shaped body
- 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
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
Definitions
- the invention relates to a casting method for producing a casting after the preamble of claim 1.
- Castings which often have a complicated shape, are usually in so-called “lost” forms or manufactured in permanent forms.
- lost forms which are usually made of a mineral refractory, granular base or molding material such.
- a model of the casting from Metal, wood, plaster or plastic is first a model of the casting from Metal, wood, plaster or plastic.
- the model forms the outer contour of the property.
- the model is basically reusable.
- the upper and lower part of the model in a molding box namely an upper box and a lower box positioned and surrounded with the molding material.
- the model parts are pulled out of the sand mold. Then the top and bottom boxes are placed one above the other. The negative mold is thus completed.
- the object of the present invention is therefore to provide a casting method to provide a simple and inexpensive casting of Cast iron materials and steel is possible.
- the aforementioned object is in a method of the aforementioned Type according to the invention by the characterizing features of the claim 1 solved ..
- the liberated solidification heat of the just casted casting used to the binder of the entire in to burn the casting mold located molding material so that subsequently loose, free-flowing and no longer with each other by the binder result in bonded molding material particles.
- the residence time of the invention manufactured casting so longer than this manufacturing technology would actually be necessary for the casting.
- Manufacturing technology can The casting is removed after casting as soon as it is solidified. at The invention is followed by a longer residence step or an additional one Staying on, the or the conscious of the full thermal Implementation of the binder of the molding base material is tuned.
- the residence time on the one hand and the layer thickness of the molding material on the other hand depending on the wall thickness the casting to be cast and / or depending on the solidification behavior the melt introduced into the casting mold is selected.
- the residence time should be adjusted so that this Place the binder while removing the bonds between the molding material particles burns.
- the layer thickness of the molding material except for maximum 150 mm can be adjusted to the result of the invention to achieve. It is understood that every single value between greater 0 mm and 150 mm, ie 1, 2, ... 148, 149 mm can be set, without the need for an explicit mention.
- the method of the invention can be easily characterized integrate into the casting process that the additional residence time of the Casting in the mold at least a multiple of the duration of a casting cycle of the casting process. In other words, this means that the casting is not taken at the time it is usually after is taken from the casting but a casting cycle later.
- the casting remains So quite deliberately another casting cycle in the mold, so that the binder can burn completely.
- the cycle times are preferably less than 5 min, usually less than 2 min, each value less than 2 min min is possible without the need for an explicit mention.
- the Mold base After casting and removal of the casting from the mold is the Mold base usually processed. Also in the inventive Process takes place a treatment of the molding material. According to the invention, the treatment in the invention, the separation of the Formstoffs limited by the thermal combustion residues of the binder, because the individual molding material particles no longer over the binder with each other are connected. A crushing step and / or a thermal Treatment for the preparation of the molding material is not in the invention required.
- Preferred and usually sufficient is a preparation of the molding material after casting by sighting and / or sieving, what ultimately to a significant reduction in processing costs and the Auftungsaufwandes and thus to a significant reduction in Cost of the casting leads.
- the processed molding material can after processing a binder for renewed Production of molding material can be added. Subsequently becomes the mold base material on the inner surface structure of the mold preferably pneumatically applied by air pulses, wherein the molding material during or after application to the inner surface of the mold chemically bound, preferably by gassing with a catalyst becomes.
- the method according to the invention is suitable for all common casting methods. It is particularly advantageous for low-pressure casting, whereupon will be discussed in more detail. But also for the gravity, Die-casting and tilt casting is the method of the invention.
- the invention further relates to the use of a casting mold for the production a casting using molding base material for carrying out the aforementioned method.
- This mold is provided with an outer first Mold carrier, an outer second mold carrier, one between the Mold carriers arranged moldings and one on the molding at least partially applied inner layer of molding material for Formation of the casting cavity.
- the use of the shaped body according to the invention offers even more Advantages. Since the molded body, which provides the negative basic ready, already a large part of the volume between the mold carriers and consequently only small quantities of sand are required to produce a casting mold, can achieve significantly lower cycle times for the production of the mold become. Furthermore, it is in the mold according to the invention readily possible to attach cooling segments to the mold carrier or to the molded body, so that an exact positioning results, which, as stated above, just for the production of thin-walled castings is essential. Moreover, it is also readily possible that the molding - with appropriate Choice of material - even at least partially the function of a Cooling segment takes over, namely in areas that are not or only with a small layer of molding material are coated.
- Low clock characters can be realized in particular by the fact that the application of the mold base layer on the molding or the individual Shaped body halves air flow assisted takes place. This can also readily the strength of the sand layer according to the requirements of a steered solidification can be adjusted. After applying the Layer, the shaped body halves are then placed on each other, so that the Mold is closed.
- a mold 1 which is particularly in connection suitable with the casting method according to the invention.
- Form base material is in a conventional manner to mineral, refractory, granular material, such as sand, with binder and optionally other additives.
- molding material is in the casting mold 1 basically a form of the type "lost Shape".
- the mold 1 has an outer first mold carrier 4 and an outer one second mold carrier 5.
- the mold carriers 4 and 5 are the upper and lower boundary of the mold 1 in a horizontal arrangement. It is understood that the mold, of course, also obliquely or vertically can be arranged. In a vertical arrangement of the mold 1 are located The mold carrier 4, 5 also outside, but then are right and arranged on the left. The following statements refer to the same Way to the right-left arrangement of the mold carriers, albeit only the top-bottom arrangement of the mold carriers is shown and described. The same applies, moreover, to the shaped body halves described in more detail below 13, 14. Between the mold carriers 4, 5 is a shaped body 6, which is usually made of metal, but at least partially can also be made of ceramic.
- the molded body 6 lies with its outer sides 7, 8 on the inner surfaces 9, 10 of the mold carrier 4, 5 at.
- the inner surface 11 of the molded body 6 is profiled and corresponds at least substantially the outer contour of the casting 2.
- the inner surface 11 of the molding 6 forms thus a negative preform or an outer preform.
- On the inner surface 11 of the shaped body 6 is at least partially a layer 12 of the molding base material 3 applied to the formation of the individually not designated casting cavity.
- the layer thickness varies from 0 mm to a maximum of 150 mm and can have any intermediate value, without an enumeration in the individual would be required.
- the entire inner surface of the shaped body. 6 coated with molding material 3 it may be noted that casting technical reasons, it is also possible in principle, individual surface areas not to coat. This will be discussed in more detail below. Moreover, it is in the illustrated embodiments such that the layer 12 of molding material 3 partly also directly on the inner surface 10 of the lower mold carrier 5 is applied. This is natural in certain castings 2 also in the region of the upper mold carrier 4th possible, although this is not shown here.
- the shaped body 6 has a first one Shaped body half 13 and a second shaped body half 14.
- the upper Shaped body half 13 is attached to the upper mold carrier 4, while the lower mold half 14 is attached to the lower mold carrier 5.
- the closed Condition of the mold 1 are the shaped body halves 13, 14 anyway in their outer edge region 15 on each other, so that the casting mold 1 is closed in this area.
- FIG. 11 and 12 shows that the molded body 6 a Plurality of in particular modularly constructed mold carrier segments 16 having. Due to the modular structure, it is possible, if necessary, individual To complement or remove molded body segments 16 to a variation of the Thickness of the layer 12 to meet the requirements of a controlled solidification to meet.
- modular means in any case also that the molded body segments 16 are constructed in a modular manner, ie the lengths, Widths and / or heights of the individual molded body segments 16 on each other in their dimensions are matched, which means that a certain basic size n is provided and all dimensions an integer multiple of the basic size n are.
- the individual molded body elements 16 are each with the respective Mold carrier 4, 5 firmly connected.
- molded body elements 16 to arrange one another, it is understood that in this case the relevant mold body elements 16 mounted on each other, in particular screwed are.
- corresponding Guide elements such as pins and grooves should be provided to one exact positioning of the individual molded body segments 16 and the molded body halves 13, 14 to ensure the mold carriers 4, 5. Due to the modular structure of the molding 6, it is readily possible, corresponding always matching guiding or positioning elements to the relevant Provide components.
- the shaped body segments 16 as executed massive blocks.
- the massive execution leads to a comparatively high weight of both the upper box 17, resulting from the upper mold carrier 4, the upper mold half 13 and the applied Layer 3, as well as the lower box 18, the lower Mold carrier 5, the lower mold half 14 and the applied thereto Layer 12 has.
- the mold 1 is used in low-pressure casting.
- the filling of the mold 1 is carried out from below, namely via a Usually referred to as a gate opening 19 in the lower mold carrier 5. Due to the massive design of the upper mold half 13 and the resulting high dead weight can be a "floating" of the top box 17 are prevented during casting. Additional means to hold down of the top box 17 or a clamping of the mold 1 can be saved.
- Fixing aids 20 are for example protrusions in the manner of Moniereisen, a detachment of the molding sand by vibrations occurring to prevent in the foundry business. Instead of ironing it is basically also possible, fixing aids in the manner of a surface profiling of the inner surface 11 of the shaped body 6 to provide a better connection of the To obtain molding material 3 with the molding 6.
- the molded body 6 itself or the individual molded body segments 16 are made preferably made of a high temperature resistant material, such as in particular Graphite, tungsten carbide or steel. Such a choice of material is in the Required rule, since the shaped body 6 a high thermal stress subject during casting. In contrast, the mold carrier 4, 5 made cheaper materials are produced, since the thermal load of this Components are usually much lower.
- a high temperature resistant material such as in particular Graphite, tungsten carbide or steel.
- both on the upper mold carrier 4 and on the lower mold carrier 5 each have a cooling segment 21 attached.
- the cooling segments 21 By the direct attachment of the cooling segments 21 on the mold carriers 4, 5 results in an exact positioning of these segments, what with regard to a controlled solidification especially thin-walled Casting is of considerable importance.
- Draw the cooling segments 21 This is characterized by the fact that no layer 12 at least partially out on them Mold base material 3 is applied and therefore on the cooling segments 21st very quickly heat energy is dissipated. Ultimately, it is at the Cooling segments 21 to mold body segments 16, on the not or only partially heat-insulating mold base material 3 is applied.
- the molding material is 3 with different layer thickness on the molded body 6 and the inner surface 11th applied.
- the layer thickness is greater, so that there is a heat-insulating Effect results.
- the thickness of layer 12 may meet the requirements of steered solidification in accordance with the wall thickness of the casting to be cast 1 and thus optimized.
- the molding material is 3 even pneumatically and in particular by air pulses, so with high Speed and at high pressure, on the inner surface 11 of the molding 6 applied.
- the molding material 3 is quasi on the molding 6 shot up. As a result, can be exactly and in the shortest possible time the desired Layer thickness realize.
- Small aperture openings for venting air during airflow assisted Applying the mold base material 3 is provided.
- the molding material 3 is fully automatic in the desired layer thickness, which is usually in the single-digit centimeter range, applied, wherein due to the binder contained in the molding material 3 very quickly a Solidification results. Because of this way of making the negative mold let achieve very short cycle times for the production of the mold 1, especially only a very small amount of molding material 3 is applied to the molding 6 must become.
- the mold carriers 4, 5 are each plate-shaped as so-called base plates. Ultimately take over the base plates only the support function for the shaped body 6, which can be arbitrary in size, but not on the base plates should survive.
- the invention thus offers the possibility of standardized Use base plates on which, depending on the casting to be produced larger or smaller moldings 6 are attached. Due to the plate-shaped Forming the mold carrier 4, 5, these form only the upper and lower Completion of the casting mold 1.
- the casting mold 1 is laterally through the molded body 6 or the superposed shaped body halves 13, 14 limited.
- this is located in the lower mold carrier 5 an opening 19 for filling the mold 1.
- a corresponding opening in the upper mold carrier 4 or laterally to provide on the shaped body 6.
- the arrangement of the gates is under Considering the casting process chosen in each case, wherein the casting mold 1 in addition to the low pressure casting also for the gravity and Die casting and can be used for Kippgie health.
- the opening 19 provided a cooling.
- the cooling has present at least one passed by the gate and preferably this essentially surrounding cooling channel 23 for guiding a cooling medium.
- the cooling channel 23 is in the lower mold carrier 5, see above that this and in particular the region of the opening 19 is cooled.
- the cooling is activated towards the end of the casting process.
- the resulting cooling effect is used to build a steered solidification or used to set a rapid solidification in the region of the opening 19.
- the rapid solidification in the region of the opening 19 is necessary to at Use of low cycle times leakage of the still liquid metal from the Prevent opening 19.
- As cooling media which are supplied via the cooling channel 23 and preferably recirculated, all suitable gaseous or liquid materials are used.
- FIGS. 9 and 10 show that both on the upper mold carrier 4 as well as on the lower mold carrier 5 guide means 25, 26 are provided to the mold carriers 4, 5 can be moved and positioned in a simple manner. In the illustrated embodiment, it is in the guide means 25 about an elongated, laterally projecting from the lower mold carrier 5 Guide projection, while the guide means 26 to a A plurality of laterally projecting guide pieces is.
- the process of the invention now proceeds in such a way that after casting a casting 2 this remains so long in the mold 1 until the Binder of the molding material 3 is completely burned and only next to the molding material or the molding material particles still combustion residues remain of the binder, but no firm connection between the individual Cause molding material particles.
- To ensure such Combustion or thermal conversion of the binder should be the temperature during or after the casting process at any point of the inner contour of Mold having mold base material at least 350 ° C, preferably be about 400 ° C.
- the molding material of the Combustion residues of the binder which are essentially to Dust particles is, is separated, preferably by a sighting and / or screening. A thermal treatment and / or comminution is no longer necessary. Subsequently, the processed can Form material for re-production of molding material 3 binder added again become.
- the production of a new mold 1 is then such that initially on the respective mold carrier 4, 5, the molded body segments 16 and placed accurately positioned by means of appropriate positioning or positive locking means become. Subsequently, the molded body segments 16 with the respective Mold carrier 4, 5 firmly connected. Then, the molding base 3 in the in Dependence of the wall thickness of the casting to be produced required Layer thickness pneumatically applied by air pulses. By adding a corresponding catalyst then gives a chemical reaction of the binder, so that the mold base material after application to the molding is tied off. The catalyst is fed by gassing. The required layer thickness to achieve a steered solidification is incumbent based on the expert's knowledge the aforementioned parameter.
- the inventive method is particularly suitable for the production of steel body parts of a motor vehicle support frame structure, wherein the body member is formed as a thin-walled steel casting.
- stainless steel as a casting material can be special Achieve strength values. Basically, different types of Stainless steel usable. Preference is given to a stainless steel with a strength of at least 400 MPa and an elongation at break of about 25% used.
- a stainless steel can be used that continues next to iron 0.1% to 0.3%, especially about 0.2% carbon, 3% to 7%, in particular about 5% manganese, 0.2% to 0.6%, especially about 0.4% silicon, 15% to 26%, especially about 21% chromium, 0.5% to 1.7%, preferably about 1.1% nickel, 0.3% to 0.7%, especially about 0.5% copper and 0.08% to 0.18%, preferably 0.13% nitrogen.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
Description
- Fig. 1
- eine Querschnittsansicht einer ersten Ausführungsform einer erfindungsgemäßen Gießform,
- Fig. 2
- eine weitere Querschnittsansicht der Gießform aus Fig. 1,
- Fig. 3
- eine Querschnittsansicht einer zweiten Ausführungsform einer erfindungsgemäßen Gießform,
- Fig. 4
- eine weitere Querschnittsansicht der Gießform aus Fig. 3,
- Fig. 5
- eine Querschnittsansicht einer dritten Ausführungsform einer erfindungsgemäßen Gießform,
- Fig. 6
- eine weitere Querschnittsansicht der Gießform aus Fig. 5,
- Fig. 7
- eine Querschnittsansicht einer vierten Ausführungsform einer erfindungsgemäßen Gießform,
- Fig. 8
- eine weitere Querschnittsansicht der Gießform aus Fig. 7,
- Fig. 9
- eine Querschnittsansicht einer fünften Ausführungsform einer erfindungsgemäßen Gießform,
- Fig. 10
- eine weitere Querschnittsansicht der Gießform aus Fig. 9,
- Fig. 11
- eine Querschnittsansicht einer sechsten Ausführungsform einer erfindungsgemäßen Gießform und
- Fig. 12
- eine Querschnittsansicht einer siebten Ausführungsform einer erfindungsgemäßen Gießform.
Claims (10)
- Gießverfahren zur Herstellung eines Gußteils (2), insbesondere eines dünnwandigen Stahlgußbauteils, unter Verwendung einer Gießform (1), mit einer zumindest bereichsweise auf die innere Oberflächenstruktur der Gießform (1) aufgebrachten dünnen Schicht aus Formstoff und Binder aufweisenden Formgrundstoff (3) zur Bildung des Gießhohlraumes, wobei der Formstoff durch den Binder vor dem Gießvorgang verfestigt ist, dadurch gekennzeichnet, daß die Verweilzeit des Gußteils (2) in der Gießform (1) nach dem Gießvorgang derart eingestellt wird, daß der gesamte Binder des in der Gießform (1) befindlichen Formgrundstoffs (3) unter Aufhebung der Bindungen zwischen den Formstoffpartikeln thermisch umgesetzt wird.
- Gießverfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Verweilzeit einerseits und die Schichtdicke des Formgrundstoffs (3) andererseits in Abhängigkeit der Wandstärke des zu gießenden Gußteils (2) und/oder in Abhängigkeit des Erstarrungsverhaltens der in die Gießform (1) eingebrachten Schmelze gewählt wird.
- Gießverfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die zusätzliche Verweilzeit des Gußteils (2) in der Gießform (1) wenigstens ein weiterer Gießtakt des Gießprozesses ist.
- Gießverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Formgrundstoff (3) nach dem Gießen aufbereitet wird und daß die Aufbereitung auf die Trennung des Formstoffs von den thermischen Verbrennungsrückständen des Binders beschränkt ist, ohne daß ein Zerkleinerungsschritt und/oder eine thermische Behandlung erforderlich sind.
- Gießverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Aufbereitung des Formgrundstoffs (3) nach dem Gießen durch eine Sichtung und/oder eine Siebung erfolgt.
- Gießverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Formgrundstoff (3) auf die innere Oberflächenstruktur des Formkörpers (6) pneumatisch durch Luftimpulse aufgebracht wird und daß, vorzugsweise, der Formgrundstoff (3) bei und/oder nach dem Aufbringen auf den Formkörper (6) chemisch, vorzugsweise durch Begasen mit einem Katalysator, abgebunden wird.
- Verwendung einer Gießform (1) zur Herstellung eines Gußteils (2) unter Verwendung von Formgrundstoff (3) zur Durchführung des Gießverfahrens nach einem der vorhergehenden Ansprüche, mit einem äußeren ersten Formträger (4), einem äußeren zweiten Formträger (5), einem zwischen den Formträger (4, 5) angeordneten Formkörper (6) und einer auf den Formkörper (6) zumindest bereichsweise aufgebrachten inneren Schicht (12) aus Formgrundstoff (3) zur Bildung des Gießhohlraums.
- Gießform nach Anspruch 7, dadurch gekennzeichnet, daß der Formkörper (6) eine erste, am ersten Formträger (4) lösbar befestigte Formkörperhälfte (13) und eine zweite, am zweiten Formträger (5) lösbar befestigte Formkörperhälfte (14) aufweist und daß die Formkörperhälften (13, 14) im geschlossenen Zustand der Gießform (1) aufeinander aufliegen.
- Gießform nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß der Formkörper (6) eine Mehrzahl von modular aufgebauten Formkörpersegmenten (16) aufweist.
- Gießform nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß der Formgrundstoff (3) mit unterschiedlicher Schichtdicke auf den Formkörper (6) aufgebracht ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL04026028T PL1531021T3 (pl) | 2003-11-05 | 2004-11-03 | Sposób odlewania do wytwarzania odlewów |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10352180A DE10352180B4 (de) | 2003-11-05 | 2003-11-05 | Gießverfahren zur Herstellung eines Gußteils |
DE10352180 | 2003-11-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1531021A1 true EP1531021A1 (de) | 2005-05-18 |
EP1531021B1 EP1531021B1 (de) | 2007-01-17 |
Family
ID=34202447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04026028A Not-in-force EP1531021B1 (de) | 2003-11-05 | 2004-11-03 | Giessverfahren zur Herstellung eines Gussteils |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1531021B1 (de) |
DE (3) | DE10352180B4 (de) |
ES (1) | ES2279279T3 (de) |
PL (1) | PL1531021T3 (de) |
PT (1) | PT1531021E (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1327579A (en) * | 1971-11-18 | 1973-08-22 | Hoeganaes Ab | Casting of metals |
JPS564343A (en) * | 1979-06-22 | 1981-01-17 | Hitachi Ltd | Method of manufacturing mold |
EP0133211A1 (de) * | 1983-07-01 | 1985-02-20 | Gerhard Müller-Späth | Verfahren zum Herstellen einer Giessform |
JPS62220241A (ja) * | 1986-03-20 | 1987-09-28 | Toyota Motor Corp | 鋳型およびその鋳型を用いた減圧鋳造方法 |
DE20305664U1 (de) * | 2002-05-10 | 2003-08-14 | Dihag Deutsche Gieserei Und In | Gießform zur Herstellung eines Gußteils unter Verwendung von Formgrundstoff |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4651799A (en) * | 1986-01-30 | 1987-03-24 | Hitchiner Manufacturing Co., Inc. | Vented casting molds and process of making the same |
DE3614397A1 (de) * | 1986-04-28 | 1987-10-29 | Wolfgang Caspers | Verfahren zum vermindern von emissionen, insbesondere von kohlenwasserstoff-verbindungen, beim giessen von metallen |
DE3702064A1 (de) * | 1987-01-24 | 1988-08-04 | Gao Jianmin | Schraegwalzwerk fuer grosse und extra grosse nahtlose rohre |
DE4020431A1 (de) * | 1990-06-27 | 1992-01-02 | Kloeckner Humboldt Deutz Ag | Giessform |
ES2107438T5 (es) * | 1991-05-24 | 2004-04-01 | Consolidated Engineering Company, Inc. | Metodo y aparato para tratar termicamente piezas coladas metalicas. |
JP2849213B2 (ja) * | 1992-08-13 | 1999-01-20 | コンソリデイティッド エンジニアリング カンパニー オブ ジョージア,インコーポレイテッド | 金属キャスティングの熱処理および炉内砂回収 |
DE4427586C1 (de) * | 1994-06-15 | 1995-07-20 | Johann Muehlbauer | Vorrichtung zum Aufbereiten von Gießereialtsand |
DE19937798A1 (de) * | 1999-08-10 | 2001-03-01 | Ks Aluminium Technologie Ag | Verfahren zum Herstellen von Leichtmetallgussteilen |
DE10014591C1 (de) * | 2000-03-27 | 2001-08-02 | Actech Gmbh Adv Casting Tech | Verfahren zum steigenden Gießen in Sandformen mit gerichteter Erstarrung von Gußteilen |
-
2003
- 2003-11-05 DE DE10352180A patent/DE10352180B4/de not_active Expired - Fee Related
-
2004
- 2004-11-03 DE DE502004002666T patent/DE502004002666D1/de active Active
- 2004-11-03 ES ES04026028T patent/ES2279279T3/es active Active
- 2004-11-03 PT PT04026028T patent/PT1531021E/pt unknown
- 2004-11-03 EP EP04026028A patent/EP1531021B1/de not_active Not-in-force
- 2004-11-03 PL PL04026028T patent/PL1531021T3/pl unknown
- 2004-11-04 DE DE202004017235U patent/DE202004017235U1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1327579A (en) * | 1971-11-18 | 1973-08-22 | Hoeganaes Ab | Casting of metals |
JPS564343A (en) * | 1979-06-22 | 1981-01-17 | Hitachi Ltd | Method of manufacturing mold |
EP0133211A1 (de) * | 1983-07-01 | 1985-02-20 | Gerhard Müller-Späth | Verfahren zum Herstellen einer Giessform |
JPS62220241A (ja) * | 1986-03-20 | 1987-09-28 | Toyota Motor Corp | 鋳型およびその鋳型を用いた減圧鋳造方法 |
DE20305664U1 (de) * | 2002-05-10 | 2003-08-14 | Dihag Deutsche Gieserei Und In | Gießform zur Herstellung eines Gußteils unter Verwendung von Formgrundstoff |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 005, no. 047 (M - 061) 28 March 1981 (1981-03-28) * |
PATENT ABSTRACTS OF JAPAN vol. 012, no. 078 (M - 675) 11 March 1988 (1988-03-11) * |
Also Published As
Publication number | Publication date |
---|---|
DE502004002666D1 (de) | 2007-03-08 |
PT1531021E (pt) | 2007-03-30 |
PL1531021T3 (pl) | 2007-06-29 |
EP1531021B1 (de) | 2007-01-17 |
DE10352180B4 (de) | 2006-03-02 |
DE10352180A1 (de) | 2005-06-16 |
DE202004017235U1 (de) | 2005-02-17 |
ES2279279T3 (es) | 2007-08-16 |
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