DE19831149A1 - Producing castings, in particular, parts of turbine housings with use of non-meltable cores and form elements - Google Patents
Producing castings, in particular, parts of turbine housings with use of non-meltable cores and form elementsInfo
- Publication number
- DE19831149A1 DE19831149A1 DE1998131149 DE19831149A DE19831149A1 DE 19831149 A1 DE19831149 A1 DE 19831149A1 DE 1998131149 DE1998131149 DE 1998131149 DE 19831149 A DE19831149 A DE 19831149A DE 19831149 A1 DE19831149 A1 DE 19831149A1
- Authority
- DE
- Germany
- Prior art keywords
- producing castings
- flange
- castings
- parts
- form elements
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Gußstücken, unter Verwendung von nicht ausschmelzenden Kernen und Formkörpern, nach dem Oberbegriff des Patent anspruches 1.The invention relates to a process for the production of castings using of non-melting cores and moldings, according to the generic term of the patent claim 1.
Große Gußstücke, wie zum Beispiel Turbinengehäuse, werden als Hälften gegossen und nach der Fertigbearbeitung bzw. Montage an Teilungsflanschen miteinander verschraubt. Um zu verhindern, daß durch Wechselspannungen im Gehäuse Risse entstehen, werden im Teilungsflansch mindestens acht Millimeter breite Schlitze gefordert, die von der Flanschaußenseite bis in den Bereich der Schraubenlöcher verlaufen. Bei der herkömmli chen Fertigung wird der Flansch durchgehend gegossen und die Schlitze mechanisch, durch Fräsen, eingearbeitet. Dazu ist ein entsprechender Aufwand erforderlich.Large castings, such as turbine housings, are cast as halves and screwed together after finishing or assembly on graduation flanges. To prevent cracks from occurring in the housing due to alternating voltages in the division flange at least eight millimeters wide slots required by the Flange outside extend into the area of the screw holes. At the conventional During manufacture, the flange is cast continuously and the slots mechanically, by milling, incorporated. This requires a corresponding effort.
Es ist ein Verfahren zum Einformen von Kanälen in Gußstücke mit ausschmelzenden Kernen aus der DE-OS 14 33 998 bekannt. Dabei wird die Oberfläche von Kernen oder Formwänden mit einer Schutzschicht versehen, um das Nachdrücken oder Durchbrechen von Gußeisen beim Auslaufen oder Verdampfen des Kern- bzw. Formwerkstoffes zu ver hindern.It is a process for forming channels in castings with melting ends Cores known from DE-OS 14 33 998. The surface of cores or Form walls are provided with a protective layer to prevent them from being pressed or broken through of cast iron when the core or molding material runs out or evaporates prevent.
Der Erfindung liegt die Aufgabe zugrunde, die Fertigung von Gußstücken zu optimieren.The invention has for its object to optimize the manufacture of castings.
Erfindungsgemäß wurde dies mit den Merkmalen des Patentanspruches 1 gelöst. Vorteil hafte Weiterbildungen sind den Unteransprüchen zu entnehmen. According to the invention, this was achieved with the features of claim 1. Advantage further training can be found in the subclaims.
Das vorgeschlagene Verfahren dient zur Herstellung von Gußstücken unter Verwendung von nicht ausschmelzenden Kernen und Formkörpern, insbesondere zur Ausbildung von Schlitzen in dem Flansch eines Gehäuses. Dabei werden in die Form beschichtete Bleche eingelegt, in den Flansch eingegossen und nach dem Gießen aus dem Gußstück entfernt. Die Beschichtung ist wärmeisolierend, verhindert den Kontakt mit dem Gußeisen und so mit das Ausschmelzen oder Anhaften der Bleche. Mehrere Bleche können für komplizierte Schlitzgestaltungen zu einem Formkörper zusammengefaßt werden. Das Entfernen er folgt vorzugsweise während oder nach dem Erkalten der Gußstücke und durch einfaches Herausschlagen aus der Schlitzkontur.The proposed method is used to manufacture castings of non-melting cores and moldings, in particular for the formation of Slits in the flange of a housing. In doing so, metal sheets are coated inserted, poured into the flange and removed from the casting after casting. The coating is heat insulating, prevents contact with the cast iron and so on with melting or sticking of the sheets. Multiple sheets can be used for complicated Slit designs can be combined into a shaped body. Removing it follows preferably during or after cooling of the castings and by simple Knock out of the slot contour.
Mit dem erfindungsgemäßen Verfahren wird die Herstellung von Gußstücken vereinfacht, weil der Aufwand für die mechanische Bearbeitung der teilweise komplizierten Schlitz konturen entfällt. Lage und Länge der Schlitze sind variabel und leicht den Erfordernissen am Gußstück anzupassen.With the method according to the invention, the production of castings is simplified, because of the expense of machining the partially complicated slot contours are eliminated. The location and length of the slots are variable and easily meet the requirements to adapt to the casting.
Die Zeichnung stellt ein Ausführungsbeispiel der Erfindung dar und zeigt in einer einzigen Figur ein Gußstück mit einem mit Schlitzen 1 versehenen Flansch 2.The drawing shows an exemplary embodiment of the invention and shows in a single figure a casting with a flange 2 provided with slots 1 .
Zur Ausbildung von Schlitzen 1 in dem Flansch 2 eines Gehäuses werden in die Form beschichtete Bleche eingelegt, in den Flansch eingegossen und nach dem Gießen ent fernt.To form slots 1 in the flange 2 of a housing, coated sheets are inserted into the mold, poured into the flange and removed after casting.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998131149 DE19831149A1 (en) | 1998-07-11 | 1998-07-11 | Producing castings, in particular, parts of turbine housings with use of non-meltable cores and form elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998131149 DE19831149A1 (en) | 1998-07-11 | 1998-07-11 | Producing castings, in particular, parts of turbine housings with use of non-meltable cores and form elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19831149A1 true DE19831149A1 (en) | 2000-01-13 |
Family
ID=7873756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1998131149 Withdrawn DE19831149A1 (en) | 1998-07-11 | 1998-07-11 | Producing castings, in particular, parts of turbine housings with use of non-meltable cores and form elements |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19831149A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1358954A1 (en) * | 2002-04-29 | 2003-11-05 | United Technologies Corporation | Shaped core for cast cooling passages and enhanced part definition |
| EP1543896A3 (en) * | 2003-12-19 | 2006-02-01 | United Technologies Corporation | Investment casting cores |
-
1998
- 1998-07-11 DE DE1998131149 patent/DE19831149A1/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1358954A1 (en) * | 2002-04-29 | 2003-11-05 | United Technologies Corporation | Shaped core for cast cooling passages and enhanced part definition |
| EP1543896A3 (en) * | 2003-12-19 | 2006-02-01 | United Technologies Corporation | Investment casting cores |
| CN1319671C (en) * | 2003-12-19 | 2007-06-06 | 联合工艺公司 | Investment casting cores |
| US7270170B2 (en) | 2003-12-19 | 2007-09-18 | United Technologies Corporation | Investment casting core methods |
| EP2295166A1 (en) * | 2003-12-19 | 2011-03-16 | United Technologies Corporation | Investment casting cores |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |