CN104439059B - Production method of wax mold of hollow blade and mold used in production method - Google Patents
Production method of wax mold of hollow blade and mold used in production method Download PDFInfo
- Publication number
- CN104439059B CN104439059B CN201410737529.1A CN201410737529A CN104439059B CN 104439059 B CN104439059 B CN 104439059B CN 201410737529 A CN201410737529 A CN 201410737529A CN 104439059 B CN104439059 B CN 104439059B
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- China
- Prior art keywords
- mould
- core
- point
- hollow blade
- wax
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Classifications
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- 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
Abstract
The invention provides a production method of a wax mold of a hollow blade. The production method comprises the following steps: step A, producing a mold core and arranging a core head on one side, corresponding to an opening end of an inner cavity, of the mold core; step B, producing a mold, wherein the mold comprises a first sub-mold and a second sub-mold, the first sub-mold is provided with at least three convex parts for supporting the mold core, and the second sub-mold is provided with a thimble which is movably connected and is used for fixing the mold core; step C, combining the mold and producing a wax mold blank of the hollow blade; and step D, repairing concave points formed by the thimble and the convex parts on the wax mold blank in the step C so as to finish the production of the wax mold of the hollow blade. By virtue of the production method of the wax mold of the hollow blade, provided by the invention, the corresponding wall thickness size of the inner cavity of the hollow blade which is produced by the wax mold and has the blind hole type inner cavity is stable and the precision is also easy to guarantee. The invention further provides the mold used in the method.
Description
Technical field
The present invention relates to casting field, the system of the wax-pattern that more particularly to a kind of hollow blade for aero-engine casts
Method is made, present invention also offers the mould that said method is used.
Background technology
Fig. 1 is a kind of structural representation of the hollow blade of aero-engine, shown in Figure 1, in aero-engine
In part, there is a kind of hollow blade 1 that there is blind-hole type inner chamber 2, i.e. its inner chamber 2 there was only one end open, the other end is closing.For
The Foundry Production hollow blade 1, needs the previously prepared same wax-pattern with blind-hole type inner chamber.Fig. 2 is shown in manufacture Fig. 1
The principle schematic of the wax-pattern needed for hollow blade, shown in Figure 2, the manufacture method of existing wax-pattern 3 is using " cantilever style
The mode of core ", that is to say that the opening of core 4 to form inner chamber can draw a core print 41 fixed in mould (not shown)
Position, and blind end be then it is hanging, it is contactless with mold cavity, need to stay certain gap when matching with mould due to core print 41
(0.05-0.1mm), so core 4 has in a mold certain activeness, from the end of the core print 41 of positioning more away from, core 4
Activeness it is bigger.Core 4 is very big in the swing of blind end, can reach 0.5mm, therefore easily causes the inner chamber pair of wax-pattern 3
The wall thickness dimension answered is overproof, so as to cause the corresponding wall thickness dimension in the position of inner chamber 2 of hollow blade of final Foundry Production overproof.
There is presently no good method and can solve the problem that this problem.
The content of the invention
A kind of method for manufacturing wax membrane that the technical problem to be solved in the present invention is to provide hollow blade and its mould for using,
So that problem noted earlier is reduced or avoided.
To solve above-mentioned technical problem, the present invention proposes a kind of method for manufacturing wax membrane of hollow blade, and it is used to manufacture
The wax-pattern of the hollow blade with blind-hole type inner chamber, it comprises the steps,
Step A, according to the interior chamber size core is made, and in core correspondence lumen openings end side one is arranged
Individual core print；
Step B, according to the hollow blade outer profile size mould is made, and the mould includes that what is be detachably connected is used for
Form first point of mould and second point of mould of the die cavity consistent with the hollow blade outer profile size, first point of mould and/or
Second point of mould is provided with the locating slot for placing the core print, and it is described for resting against that first point of mould is provided with least three
The protuberance of core, the height of protuberance wall corresponding with the position of its cavity that contact position is formed on the core
Thick equal, second point of mould is provided with the thimble for fixing the core of a movable connection；
Step C, the core print is positioned in the locating slot, combines first point of mould and second point of mould, is made
The core is located in the die cavity, and the movement thimble makes the core closely be connected with the protuberance, the fixation top
Pin, makes the thimble and core described in the protuberance stable holding, the casting into the die cavity manufacture the hollow blade
Wax-pattern embryo；
Step D, the concave point to being formed by the thimble and the protuberance on wax-pattern embryo in step C is repaired, complete
Into the manufacture of the wax-pattern of the hollow blade.
Present invention also offers the mould that said method is used, it is used to manufacture the hollow blade with blind-hole type inner chamber
Wax-pattern, it includes, a core corresponding with the interior chamber size, sets in core correspondence lumen openings end side
Put a core print, first point of mould for forming the die cavity consistent with the hollow blade outer profile size for being detachably connected and
Second point of mould, first point of mould and/or second point of mould are provided with the locating slot for placing the core print, first point of mould
Being provided with least three is used to rest against the protuberance of the core, the height of the protuberance and its contact position shape on core
Into the corresponding wall thickness of empty cavity position it is equal, second point of mould be provided with movable connection for fixing the core
Thimble.
The method for manufacturing wax membrane of a kind of hollow blade provided by the present invention, by having that its wax-pattern for manufacturing is produced
The hollow blade of blind-hole type inner chamber, the corresponding wall thickness dimension of its inner chamber is stablized, and precision is also readily available guarantee.The present invention
Additionally provide the mould that said method is used.
Description of the drawings
The following drawings is only intended in schematic illustration and explanation is done to the present invention, is not delimit the scope of the invention.Wherein,
Fig. 1 is a kind of structural representation of the hollow blade of aero-engine；
The principle schematic of wax-patterns of the Fig. 2 needed for manufacture the hollow blade shown in Fig. 1；
Fig. 3 is the mould that a kind of method for manufacturing wax membrane of hollow blade of a specific embodiment according to the present invention is used
The structural representation of tool；
Fig. 4 is the principle schematic diagram. of first point of mould in Fig. 3；
Fig. 5 is the structural principle cross-sectional schematic of second point of mould in Fig. 3.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now control illustrates this
Bright specific embodiment.Wherein, identical part adopts identical label.
Fig. 1 is a kind of structural representation of the hollow blade of aero-engine；Fig. 3 is concrete real according to of the invention one
Apply the structural representation of the mould that a kind of method for manufacturing wax membrane of hollow blade of example is used；Fig. 4 is first point of mould in Fig. 3
Principle schematic diagram.；Fig. 5 is the structural principle cross-sectional schematic of second point of mould in Fig. 3.Below with the hollow blade shown in Fig. 1
As a example by, a kind of method for manufacturing wax membrane of hollow blade of present invention offer is provided.
Referring to shown in Fig. 1,3-5, the invention provides a kind of method for manufacturing wax membrane of hollow blade, it is used for manufacture has
The wax-pattern of the hollow blade 1 of blind-hole type inner chamber 2, it comprises the steps,
Step A, according to the size of the inner chamber 2 core 4 ' is made, in the core 4 ' the correspondence opening side of inner chamber 2
One core print 41 ' is set；The core 4 ' can be made up of ceramics, and so its precision and intensity are all preferable, shown core print 41 '
Shape can be cuboid, trapezoidal, cylinder or cone, it is mainly used in the core 4 ' described in Primary Location in mould 5.
Step B, according to the outer profile size of the hollow blade 1 mould 5 is made, and the mould 5 includes what is be detachably connected
For forming first point of mould 51 and second point of mould 52 of the die cavity consistent with the outer profile size of the hollow blade 1, described first
Point mould 51 and/or second point of mould 52 are provided with the locating slot for placing the core print 41 ', first point of mould 51 be provided with to
Few three protuberances 511 for being used to rest against the core 4 ', the height of the protuberance 511 is contacted with it on the core 4 '
The corresponding wall thickness in position of the cavity that position is formed is equal, second point of mould 52 be provided with movable connection for solid
The thimble 521 of the fixed core 4 '；
The protuberance 511 is accurately positioned for resting against the core 4 ', according to the of different sizes of the core 4 ',
The quantity of the protuberance 511 can suitably be increased to ensure accurate positioning, the thimble 521 is used for steady with the protuberance 511
Admittedly clamp the core 4 '.The thimble 521 and the protuberance 511 are the smaller the better with the area that the core 4 ' is contacted.
The protuberance 511 can be welded to the metal needle on first point of mould 51.
The thimble 521 can be the screw being connected with second point of mould 52 by screw thread.
Step C, the core print 41 ' is positioned in the locating slot, combines first point of mould 51 and described second point
Mould 52, makes the core 4 ' in the die cavity, and the movement thimble 521 makes the core 4 ' tight with the protuberance 511
Close connection, the fixation thimble 521, makes the thimble 521 and core 4 ' described in the stable holding of the protuberance 511, to described
Casting in die cavity, manufactures the wax-pattern embryo of the hollow blade 1；
The present invention with prior art maximum difference be that, multiple protuberances 511 are provided with die cavity, by
In the height of the protuberance 511 wall thickness phase corresponding with the position of its cavity that contact position is formed on the core 4 '
Deng, therefore the wall thickness on the wax-pattern embryo for producing can ensure the good dimensional stability of acquisition and precision.
Step D, the concave point to being formed by the thimble 511 and the protuberance 521 on wax-pattern embryo in step C is repaiied
Mend, complete the manufacture of the wax-pattern of the hollow blade 1.
The presence of the thimble 511 and the protuberance 521 during due to suppressing wax-pattern, in the wax made by step C
Will certainly leave concave point on mold base, but due to the thimble 511 and the protuberance 521 and the core 4 ' contact site all
A contact is similar to, therefore the concave point is small-sized, so only needing to be mended with sealing with wax by hand.
Present invention also offers the mould that said method is used, it is used to manufacture the hollow leaf with blind-hole type inner chamber 2
The wax-pattern of piece 1, it includes, a core 4 ' corresponding with the size of the inner chamber 2, opens in the core 4 ' the correspondence inner chamber 2
Mouth end side arranges a core print 41 ', the type consistent with the outer profile size of the hollow blade 1 for formation being detachably connected
First point of mould 51 and second point of mould 52 in chamber, first point of mould 51 and/or second point of mould 52 are provided with for placing the core
41 ' locating slot, first point of mould 51 is provided with least three for resting against the protuberance 511 of the core 4 ', described
The height of protuberance 511 is equal with its corresponding wall thickness of empty cavity position that contact position is formed on core 4 ', described second point
Mould 52 is provided with the thimble 521 for fixing the core 4 ' of a movable connection.
The method for manufacturing wax membrane of a kind of hollow blade provided by the present invention, by having that its wax-pattern for manufacturing is produced
The hollow blade of blind-hole type inner chamber, the corresponding wall thickness dimension of its inner chamber is stablized, and precision is also readily available guarantee.The present invention
Additionally provide the mould that said method is used.
It will be appreciated by those skilled in the art that although the present invention is described according to the mode of multiple embodiments,
It is that not each embodiment only includes an independent technical scheme.For the sake of so narration is used for the purpose of understanding in description,
Those skilled in the art should be understood description as an entirety, and by technical scheme involved in each embodiment
Regarding as can be mutually combined into the mode of different embodiments to understand protection scope of the present invention.
Schematically specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, the equivalent variations made on the premise of the design without departing from the present invention and principle, modification and combination,
The scope of protection of the invention all should be belonged to.
Claims (2)
1. a kind of method for manufacturing wax membrane of hollow blade, it is used to manufacture the wax-pattern of the hollow blade with blind-hole type inner chamber, its
It is characterised by, it comprises the steps,
Step A, according to the interior chamber size core is made, and in the core correspondence lumen openings end side core is arranged
Head；
Step B, according to the hollow blade outer profile size make mould, the mould include be detachably connected for being formed
First point of mould and second point of mould of the die cavity consistent with the hollow blade outer profile size, first point of mould and/or second
Mould is divided to be provided with the locating slot for placing the core print, first point of mould is provided with least three for resting against the core
Protuberance, the corresponding wall thickness phase in position of the height of the protuberance and its cavity that contact position is formed on the core
, second point of mould is provided with the thimble for fixing the core of a movable connection, the protuberance is welding
Metal needle on first point of mould；
Step C, the core print is positioned in the locating slot, combines first point of mould and second point of mould, is made described
Core is located in the die cavity, and the movement thimble makes the core closely be connected with the protuberance, and the fixation thimble makes
The thimble and core described in the protuberance stable holding, the casting into the die cavity manufactures the wax-pattern of the hollow blade
Embryo；
Step D, the concave point to being formed by the thimble and the protuberance on wax-pattern embryo in step C is repaired, and completes institute
State the manufacture of the wax-pattern of hollow blade.
2. the mould that a kind of method according to claim 1 is used, it is characterised in that it is used to manufacture with blind-hole type
The wax-pattern of the hollow blade of inner chamber, it includes, a core corresponding with the interior chamber size, in core correspondence is described
Chamber opening side arranges a core print, the type consistent with the hollow blade outer profile size for formation being detachably connected
First point of mould and second point of mould in chamber, first point of mould and/or second point of mould are provided with the positioning for placing the core print
Groove, first point of mould is provided with least three for resting against the protuberance of the core, the height of the protuberance with its
The corresponding wall thickness of empty cavity position that contact position is formed on core is equal, and second point of mould is provided with movable connection
For fixing the thimble of the core, the protuberance is welded to the metal needle on first point of mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737529.1A CN104439059B (en) | 2014-12-08 | 2014-12-08 | Production method of wax mold of hollow blade and mold used in production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737529.1A CN104439059B (en) | 2014-12-08 | 2014-12-08 | Production method of wax mold of hollow blade and mold used in production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104439059A CN104439059A (en) | 2015-03-25 |
| CN104439059B true CN104439059B (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410737529.1A Active CN104439059B (en) | 2014-12-08 | 2014-12-08 | Production method of wax mold of hollow blade and mold used in production method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750491B (en) * | 2016-04-25 | 2017-11-14 | 株洲中航动力精密铸造有限公司 | The forming die for wax pattern of hollow blade and the wall thickness control method of hollow blade |
| CN106392004B (en) * | 2016-11-22 | 2019-07-02 | 株洲中航动力精密铸造有限公司 | The wall thickness control method of hollow blade with blind hole inner cavity |
| CN111036852B (en) * | 2019-11-26 | 2021-04-30 | 中国科学院金属研究所 | Method for positioning silicon-based ceramic core for single crystal/directional guide blade |
| CN115625286B (en) * | 2022-10-13 | 2023-06-30 | 中国航发北京航空材料研究院 | Exterior mold of single crystal hollow guide blade and positioning method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5411023A (en) * | 1977-06-28 | 1979-01-26 | Kubota Ltd | Oneeteme molding method of vanishable core for precise casting |
| CN101380660B (en) * | 2008-10-17 | 2010-07-07 | 贵州安吉航空精密铸造有限责任公司 | Arc sleeve type casting die |
| CN101695741B (en) * | 2009-10-30 | 2011-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for positioning mold core and mold shell of hollow blade |
| KR20130008511A (en) * | 2010-12-07 | 2013-01-22 | 미크로 시스템즈, 인코포레이티드 | Investment casting utilizing flexible wax pattern tool |
| CN202199722U (en) * | 2011-08-29 | 2012-04-25 | 贵州安吉航空精密铸造有限责任公司 | Ceramic core casting wax mould profiling die |
| CN103143682B (en) * | 2013-04-01 | 2015-02-18 | 东方电气集团东方汽轮机有限公司 | Mold core for manufacturing high-temperature alloy hollow blade |
| CN203737926U (en) * | 2014-03-07 | 2014-07-30 | 贵州安吉航空精密铸造有限责任公司 | Fusible pattern mould with positioning boss device |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
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