EP1049549B1 - Giessvorrichtung mit gussform und einem positionierungselement - Google Patents
Giessvorrichtung mit gussform und einem positionierungselement Download PDFInfo
- Publication number
- EP1049549B1 EP1049549B1 EP99932439A EP99932439A EP1049549B1 EP 1049549 B1 EP1049549 B1 EP 1049549B1 EP 99932439 A EP99932439 A EP 99932439A EP 99932439 A EP99932439 A EP 99932439A EP 1049549 B1 EP1049549 B1 EP 1049549B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- positioning element
- region
- mold
- area
- 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
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Classifications
-
- 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 casting device with a casting mold and a positioning element which for spacing two mold areas, in particular a lost mold, which serves a casting area at least partially limit which casting area with a Cast material is fillable.
- a casting mold which has an outer shell and a cast core.
- the outer Shell encloses a casting space, which is an outer shape of the Casting defined.
- the casting core is arranged in the casting area and by a support spaced and positioned from the outer shell. Thereby is between the outer shell and the casting core Formed casting area, which can be filled with a casting material is. If the casting has two adjacent inner cavities, the one another by an intermediate wall made of the casting material are separated, so are used to manufacture the internal cavities two casting cores are used, which are arranged in the casting space.
- the Cast cores each have a mold area, the Mold areas are spaced from each other, so that the Extending the casting space between them to produce the partition.
- the support is both for spacing and positioning the cast cores with respect to the outer shell, as well as for spacing and positioning of the mold areas. It consists of a material that is used when pouring of the casting area melts and connects with the casting material. By melting, the support can be poured out of the casting area become unstable, causing them to change the position of the lost mold areas no longer can safely prevent.
- the object of the invention is to provide a casting device with a casting mold with a positioning element specify the spacing of mold areas, especially lost mold areas.
- a casting device with a Mold with a Positioning element according to the preamble of the claim 1, which has a geometric configuration, which after pouring the casting area with the casting material a protection against falling out of the casting material.
- an inner cavity is a mold with used at least one casting core or a casting core structure.
- a casting core defines an inner mold area.
- the interior cavities, or the inner cavity areas of the casting are there separated from each other by a partition and can for example the guidance of a cooling fluid for cooling the casting serve.
- the following are lost mold areas Mold areas from a core or from a core structure denotes which / which after use for Production of the casting is destroyed and thus lost is.
- One or more positioning elements serves / serve the fixed positioning (fixation) of casting cores or casting core areas, so that a mutual Displacement of these core parts when pouring is avoided.
- the casting space between the, in particular lost, mold areas serves to manufacture the partition.
- the positioning element After one Pouring the casting area with the casting material is the positioning element between its initial area and its End area enclosed by casting material.
- the geometrical Design of the positioning element is falling out safely avoided from the partition, so that none Holes can occur in the partition. It remains at best a small gap between the casting material and the surface of the positioning element.
- the positioning element is of geometric design held in the partition and by the possibly remaining space can be left with a guide of cooling fluid little cooling fluid due to the interior cavity areas to step.
- the geometric configuration of the positioning element preferably has a contour of the surface with at least a local extremum between the initial area and the End range on.
- the initial area preferably shows and the end region each have a thickening.
- the positioning element is formed from a base material that a has a higher melting point than the casting material.
- a casting material serves, for example, a nickel-based or cobalt-based superalloy.
- a melting, a melting or Melt the base material when pouring out the casting area with the casting material is omitted in this case.
- a Change in the position of the, especially lost, casting cores or the geometry of the, in particular lost, cast core structure is avoided.
- Base material is a metal, especially tungsten.
- a protective layer in particular an oxide layer, attached. This connects the casting material with the base material, in particular by melting, melting or melting the base material and mixing with the Casting material for a eutectic, at least significantly more difficult, if not avoided.
- the positioning element is preferably used for spacing two, especially lost, mold areas used that are used to manufacture a turbine blade.
- The, in particular lost, mold regions are further preferred for the production of at least one inner cavity used in the turbine blade.
- the starting area and / or the ending area preferably protrudes of the positioning element in a respective, in particular lost, mold area. This will make the positioning element held in the mold areas and is secured against slipping.
- the positioning element, the mold, the Casting and the process for producing a casting as an example explained in more detail.
- the mold 1 shows a cross section through a Main axis 24 directed mold 1 for producing a gas turbine blade.
- the mold 1 has an outer shell 2 which surrounds a casting space 7 in which three casting cores 3, 4 and 5 positioned with the help of support elements 6 and by the outer shell 2 are spaced. It is also possible the casting cores 3, 4, 5 outside the casting area 8 in with respect to the main axis 24 relative to the outer shell 2 spaced by e.g. B. a suitable suspension. In this The cast cores 3, 4, 5 are fixed at one end and on other end movable. This is between the outer Shell 2 and the casting cores 3, 4 and 5, a casting area 8 is formed.
- the outer shell 2 forms an outer mold area 40.
- the casting cores 3, 4 and 5 each form the inner mold areas 9, 10 and 11, each other with positioning elements 12 to 16 are spaced.
- the positioning elements 12 to 16 are made of a base material 35 (see FIG. 4 or FIG. 5).
- the support elements 6 protrude into the outer shell 2 and the positioning elements 13 and 14 protrude into the mold areas 9 and 10 and the positioning element 16 protrudes into the mold regions 10 and 11 in.
- the casting area 8 When producing a cast part 17 (see FIG. 3) with the Mold 1, the casting area 8 with a melted Casting material 23, for example a nickel-based or cobalt-based superalloy poured out.
- the casting material 23 encloses in the casting area 8, the support elements 6 and Positioning elements 12 to 16. After the Casting material 23, the casting cores 3 to 5 are removed.
- the positioning elements 12 to 16 each have a geometric Design on that falling out of the cast material 23, even if the casting material does not melt 23 with the base material 35 prevented.
- a casting mold is greatly simplified and schematized in FIG 2 for the production of a casting 17, in particular one Turbine blade shown with an outer shell 2 and cast cores 3, 4, and 5 arranged therein. Adjacent pairs of cast cores 3, 4 and 4, 5 are each by positioning elements 14 fixed against each other. Between the outer shell 2 and the cast cores 3, 4, 5 are not locating pins or positioning elements intended. Rather, the casting cores 3, 4 and 5 fixedly connected to the outer shell 2 at a fixed end 42 and at a fixed end 42 along the major axis 24 opposite lot end 43 by at least one respective Floating bearing (slide bearing) 41 movable along the main axis 24 stored. This ensures that when pouring of casting material 23 in the between the outer shell 2 and Casting cores 3, 4, 5 formed casting area 8 no displacement the casting cores 3, 4, 5 in the transverse direction against each other and opposite the outer shell 2 occurs.
- Figure 3 shows a cross section through with the mold 8 cast part 17, in particular a turbine blade 17.
- the turbine blade 17 has three cavities 18 to 20 on. These are used in the manufacture of the casting 17th defined by the casting cores 3, 4 and 5. Between the cavities 18 and 19 as well as 19 and 20 each have one Partition 21 and 22.
- the partition 21 are the positioning elements 12 to 14 attached because of their Geometric design not from that with the cast material 23 formed partition 21 can fall out.
- the partition 22 has the positioning elements 15 and 16, which are also due to their geometric design (with Kink, with hole) do not fall out of the casting material 23 can.
- Figure 4 is the positioning element in an enlarged view 14 shown. It is essentially cylindrical with a start area 25, an end area 26 and one Surface 27 executed with a surface contour 28.
- the Surface contour 28 points between the initial area 25 and the end region 26 a local extremum 29, a maximum 29 by an attached between the start region 25 and end region 26 Thickening 30 on.
- This is the positioning element 14 after encasing with a casting material 23 between the initial area 25 and the initial area 26 against secured from falling out of the casting material 23.
- Figure 5 is an enlarged view of the positioning element 13 shown at its end portion 25 and at its initial area 26 there is a thickening 31 and 32 respectively having.
- the surface contour 28 points between the Start region 25 and end region 26 a local extremum 33, a minimum on.
- the invention is characterized by a positioning element with a start area and an end area which Positioning element has a geometric configuration, after enclosing the positioning element between the start area and the end area with a casting material prevents falling out of the cast material.
- the Positioning element serves to fix two inner ones Mold areas (casting cores, casting core areas) against each other.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
- FIG 1
- eine Gußform für eine Turbinenschaufel in einem Querschnitt;
- FIG 2
- einen Querschnitt durch eine Gußform
- FIG 3
- eine Turbinenschaufel einer Gasturbine in einem Querschnitt;
- FIG 4
- ein Positionierungselement in einem Längsschnitt; und
- FIG 5
- ein weiteres Positionierungselement in einem Längsschnitt.
Claims (8)
- Giessvorrichtung, umfassend eine Gußform (1), insbesondere zur Herstellung einer Turbinenschaufel (17), die einen äußeren Gußformbereich (40) aufweist, der zumindest zwei innere Gußformbereiche (9,10,11) umgibt, die durch ein Positionierungselement (12 bis 16) voneinander beabstandet sind und einen dadurch gebildeten Gußbereich (8) zumindest teilweise begrenzen, welcher Gußbereich (8) mit einem Gußmaterial (23) ausgießbar ist, wobei
das Positionierungselement (12 bis 16) nach einem Ausgießen mit dem Gußmaterial (31) von diesem zumindest teilweise umschlossen ist und eine geometrische Ausgestaltung aufweist, die eine Sicherung gegen Herausfallen aus dem Gußmaterial (23) bedingt. - Giessvorrichtung (1) nach Anspruch 1,
dadurch gekennzeichnet, dass
das Positionierungselement (12 bis 16) eine geometrische Ausgestaltung mit einer Kontur (28) der Oberfläche aufweist, wobei die Kontur (28) zwischen dem Anfangsbereich (25) und dem Endbereich (26) mindestens ein lokales Extremum (29) hat. - Giessvorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der Anfangsbereich (25) und der Endbereich (26) des Positionierungselementes (12 bis 16) jeweils eine Verdickung (31,32) aufweisen. - Giessvorrichtung (1) nach Anspruch 2,
dadurch gekennzeichnet, dass
das Positionierungselement (12 bis 16) eine Verdickung (30) zwischen dem Anfangsbereich (25) und dem Endbereich (26) aufweist. - Giessvorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
das Positionierungselement (12 bis 16) aus einem Grundmaterial (35) ausgebildet ist, und das Grundmaterial (35) einen höheren Schmelzpunkt als das Gußmaterial (23) aufweist. - Giessvorrichtung (1) nach Anspruch 5,
dadurch gekennzeichnet, dass
das Grundmaterial (35) des Positionierungselementes (12 bis 16) Wolfram ist. - Giessvorrichtung (1)nach Anspruch 6,
dadurch gekennzeichnet, dass
an der Oberfläche (27) des Positionierungselementes (12 bis 16) eine Schutzschicht, insbesondere eine Oxidschicht, angebracht ist. - Giessvorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
das Positionierungselement (12 bis 16) einen Anfangsbereich (25) und einen Endbereich (26) aufweist, wobei der Anfangsbereich (25) und/oder der Endbereich (26) in einen jeweiligen Gußformbereich (9,10) hineinragen/hineinragt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19802573 | 1998-01-23 | ||
DE19802573 | 1998-01-23 | ||
PCT/DE1999/000121 WO1999037421A1 (de) | 1998-01-23 | 1999-01-19 | Gussteil, verfahren zur herstellung eines gussteils sowie gussform |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1049549A1 EP1049549A1 (de) | 2000-11-08 |
EP1049549B1 true EP1049549B1 (de) | 2003-01-15 |
Family
ID=7855499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99932439A Expired - Lifetime EP1049549B1 (de) | 1998-01-23 | 1999-01-19 | Giessvorrichtung mit gussform und einem positionierungselement |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1049549B1 (de) |
JP (1) | JP4327351B2 (de) |
DE (1) | DE59904037D1 (de) |
WO (1) | WO1999037421A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2874187B1 (fr) * | 2004-08-16 | 2008-01-25 | Snecma Moteurs Sa | Procede de fabrication d'une aube de turbomachine par moulage a cire perdue |
US7134475B2 (en) | 2004-10-29 | 2006-11-14 | United Technologies Corporation | Investment casting cores and methods |
JP5254675B2 (ja) * | 2008-06-16 | 2013-08-07 | 三菱重工業株式会社 | タービン翼製造用中子およびタービン翼の製造方法 |
EP2460604A1 (de) * | 2010-12-01 | 2012-06-06 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zum Gießen von Hohlkomponenten einer Turbomaschine |
US9550230B2 (en) * | 2011-09-16 | 2017-01-24 | United Technologies Corporation | Mold for casting a workpiece that includes one or more casting pins |
US10300526B2 (en) | 2014-02-28 | 2019-05-28 | United Technologies Corporation | Core assembly including studded spacer |
FR3120807B1 (fr) * | 2021-03-16 | 2023-12-01 | Safran Aircraft Engines | Procédé de fabrication par moulage de cire perdue |
CN116174660B (zh) * | 2023-04-25 | 2023-06-30 | 蓬莱三和铸造有限公司 | 一种用于矿车平衡轴的高精度铸造装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1141203A (fr) * | 1956-02-08 | 1957-08-28 | Von Roll Ag | Procédé de coulée de corps creux à parois minces et corps creux de fonderie fabriqués suivant ce procédé |
US4487246A (en) * | 1982-04-12 | 1984-12-11 | Howmet Turbine Components Corporation | System for locating cores in casting molds |
US4596281A (en) * | 1982-09-02 | 1986-06-24 | Trw Inc. | Mold core and method of forming internal passages in an airfoil |
JPS60121038A (ja) * | 1983-12-02 | 1985-06-28 | Mazda Motor Corp | 鋳型の組立方法 |
GB2150875B (en) * | 1983-12-07 | 1986-07-02 | Rolls Royce | Investment casting |
-
1999
- 1999-01-19 EP EP99932439A patent/EP1049549B1/de not_active Expired - Lifetime
- 1999-01-19 WO PCT/DE1999/000121 patent/WO1999037421A1/de active IP Right Grant
- 1999-01-19 DE DE59904037T patent/DE59904037D1/de not_active Expired - Lifetime
- 1999-01-19 JP JP2000528386A patent/JP4327351B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2002500955A (ja) | 2002-01-15 |
JP4327351B2 (ja) | 2009-09-09 |
EP1049549A1 (de) | 2000-11-08 |
DE59904037D1 (de) | 2003-02-20 |
WO1999037421A1 (de) | 1999-07-29 |
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