EP0831979B1 - Kernlagerung für ein gussstück aus metall - Google Patents
Kernlagerung für ein gussstück aus metall Download PDFInfo
- Publication number
- EP0831979B1 EP0831979B1 EP96917435A EP96917435A EP0831979B1 EP 0831979 B1 EP0831979 B1 EP 0831979B1 EP 96917435 A EP96917435 A EP 96917435A EP 96917435 A EP96917435 A EP 96917435A EP 0831979 B1 EP0831979 B1 EP 0831979B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- holder
- supports
- casting
- core support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005058 metal casting Methods 0.000 title 1
- 238000005266 casting Methods 0.000 claims description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 229920006328 Styrofoam Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
- B22C7/023—Patterns made from expanded plastic materials
- B22C7/026—Patterns made from expanded plastic materials by assembling preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
Definitions
- the invention relates to a core bearing for a casting with a long, bag-shaped cavity with the help of core supports.
- core supports are already known, which are by a band-shaped welding body are connected to each other.
- the welding body specifies the position of the core supports. It can be bent and bent, and so on to be able to follow the course of a core area. When pouring, it connects Welding body with the material of the casting. - The adjustment of the Welding body on the course of the core surface and handling when The welding body, core and mold halves need to be joined together skillful and careful work to keep the amount of rejects low.
- the invention has for its object to provide a core bearing for castings to create long, sack-like hollows that are quick, easy, and large Precision must be applied.
- the object is achieved according to the invention by a core bearing in which the core supports are arranged in a holder to be placed on the core which consists of a material that flows through the flowing into the mold Metal is evaporated and / or burned.
- the holder of the core bearing according to the invention gives the support for the Dimensions to be observed, i.e. the distances between the shape and the core between the individual supports with high accuracy.
- the preferably with Holders with open slots on one side can be fitted with core supports at any time populated and kept available for later use. Its mounting on the core is done by simply sliding it open, more advantageously Embodiment of the invention, the core and the holder with one another corresponding contour are designed so that they are only in a predetermined position are interconnected. There is no need to process the mold halves.
- Styrene polymer known under the brand name, is used as the material for the holder "Styrofoam", recommended. This material allows large-scale production Accuracy and in large numbers. Through the flowing into the mold Incidentally, metal is burned almost residue-free.
- the cavity 1 of the housing 2 shown completely in FIG. 1 and its Inner contour are in the manufacture of the housing 2 by a - not shown - formed core, which - also not shown - in two parts Mold is inserted.
- a storage necessary for the the wall 3 of the housing 2 bridges certain space.
- core supports 4 that extend over the circumference of the Core are distributed.
- the core supports 4 are in one Styrene polymer prepared holder 5 arranged before inserting the core is pushed onto the core in the mold.
- the liquid metal can now also be occupied by the holder 5 Take up space, the core supports 4 also made of metal in the emerging wall 3 of the housing 2 are included. Because the core supports 4, unlike core nails, have no parts protruding beyond the wall 3, they do not require post-processing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Sliding-Contact Bearings (AREA)
Description
- Fig. 1
- ein durch Gießen entstandenes Gehäuse eines Elektromotor-Pumpen-Aggregates in Schnittdarstellung, und in
- Fig. 2
- einen Ausschnitt aus dem Gehäuse der Fig. 1, in welchen ein bei der Herstellung des Gehäuses verwendeter Halter für Kernstützen hineinprojiziert ist.
Claims (4)
- Kernlagerung für ein Gußstück (2) mit einem langen, sackartig ausgebildeten Hohlraum (1) mit Hilfe von Kernstützen (4), wobei die Kernstützen (4) in einem auf den Kern aufzusetzenden Halter (5) angeordnet sind, welcher aus einem Material besteht, das durch das in die Gußform einfließende Metall verdampft und/oder verbrannt wird.
- Kernlagerung nach Anspruch 1, bei welcher der Halter (5) mit einseitig offenen Schlitzen zur Aufnahme der Kernstützen (4) versehen ist.
- Kernlagerung nach Anspruch 1, bei der der Kern und der Halter (5) derartig konturiert sind, daß der Halter (5) nur in einer vorgegebenen Position auf dem Kern anzuordnen ist.
- Kernlagerung nach Anspruch 1, wobei der Kalter (5) aus Styrolpolymerisat besteht.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19520569A DE19520569A1 (de) | 1995-06-06 | 1995-06-06 | Kernlagerung für ein Gußstück aus Metall |
| DE19520569 | 1995-06-06 | ||
| PCT/EP1996/002262 WO1996039268A1 (de) | 1995-06-06 | 1996-05-25 | Kernlagerung für ein gussstück aus metall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0831979A1 EP0831979A1 (de) | 1998-04-01 |
| EP0831979B1 true EP0831979B1 (de) | 1999-04-14 |
Family
ID=7763706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96917435A Expired - Lifetime EP0831979B1 (de) | 1995-06-06 | 1996-05-25 | Kernlagerung für ein gussstück aus metall |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0831979B1 (de) |
| DE (2) | DE19520569A1 (de) |
| WO (1) | WO1996039268A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019102916B4 (de) * | 2019-02-06 | 2025-11-27 | Bayerische Motoren Werke Aktiengesellschaft | Gießform sowie Verfahren zum Gießen eines Bauteils |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1259025B (de) * | 1963-01-31 | 1968-01-18 | Kleine Brockhoff Gmbh | Verfahren zur Herstellung von Bewehrungen fuer Giessformen und Formkerne |
| DE8335255U1 (de) * | 1983-12-08 | 1984-03-29 | Karl Schmidt Fabrik für Gießereibedarf GmbH & Co, 6384 Schmitten | Rutschfeste kernstuetze |
| JPS61126943A (ja) * | 1984-11-22 | 1986-06-14 | Mazda Motor Corp | シリンダブロツク鋳造用ケレン |
| DE8806421U1 (de) * | 1988-05-17 | 1988-08-04 | Karl Schmidt Fabrik für Gießereibedarf GmbH & Co, 6384 Schmitten | Kunststoff-Kernstütze |
| US5035276A (en) * | 1989-09-08 | 1991-07-30 | Brunswick Corporation | Evaporable foam pattern assembly for casting a housing for a rotary engine |
-
1995
- 1995-06-06 DE DE19520569A patent/DE19520569A1/de not_active Withdrawn
-
1996
- 1996-05-25 EP EP96917435A patent/EP0831979B1/de not_active Expired - Lifetime
- 1996-05-25 DE DE59601670T patent/DE59601670D1/de not_active Expired - Fee Related
- 1996-05-25 WO PCT/EP1996/002262 patent/WO1996039268A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP0831979A1 (de) | 1998-04-01 |
| DE59601670D1 (de) | 1999-05-20 |
| WO1996039268A1 (de) | 1996-12-12 |
| DE19520569A1 (de) | 1996-12-12 |
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