CN107931523A - A kind of small-medium size single crystal blade wax module tree structure and preparation method thereof - Google Patents
A kind of small-medium size single crystal blade wax module tree structure and preparation method thereof Download PDFInfo
- Publication number
- CN107931523A CN107931523A CN201711445497.8A CN201711445497A CN107931523A CN 107931523 A CN107931523 A CN 107931523A CN 201711445497 A CN201711445497 A CN 201711445497A CN 107931523 A CN107931523 A CN 107931523A
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- CN
- China
- Prior art keywords
- wax
- pattern
- water
- single crystal
- cooled chassis
- 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.)
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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
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
Abstract
The invention discloses a kind of small-medium size single crystal blade wax module tree structure and preparation method thereof, it is related to precision casting technology field.The wax module tree structure includes running gate system wax-pattern, crystal selector, single crystal blade, riser, water-cooled chassis wax template and the sprue cup wax-pattern being sequentially connected by middle column tube wax-pattern, top casting road wax-pattern and bottom pour mold road wax-pattern；The crystal selector, single crystal blade, riser are sequentially connected fixation；Locked with water-cooled chassis wax template by bolt the middle column tube wax-pattern bottom；Crystal selector bonding mouth is uniformly provided with the water-cooled chassis wax template, the crystal selector lower end is bonded mouth by crystal selector and is adhered on water-cooled chassis wax template.Wax-pattern module quality causes follow-up scrappage with reducing therefore during the wax pattern assemblies can improve small-medium size single crystal blade hot investment casting.
Description
Technical field
The present invention relates to precision casting technology field, be specially a kind of small-medium size single crystal blade wax module tree structure and
Its preparation method.
Background technology
Since precision cast wax module tree structure wax material low strength, domestic at present are mostly splicing by hand, repeat
The poor, stability of property is not high, and water-cooled chassis is massive plate structure, the reason such as easily occurs deforming, is combined into by hand by wax material merely
Easily there is module breakage in module, formwork is of poor quality, formwork water-cooled chassis is uneven, casting positioning is inaccurate, poor repeatability between module
The shortcomings of, causing monocrystalline precision casting to occur between formwork rupture, casting bleed-out and batch, stability is poor, monocrystalline is complete caused by being mingled with
The inferior positions such as whole property is poor, casting qualified rate is low.
When work efficiency is had an high regard in order to further improve aero-engine, before the engine turbine that higher certainly will be required
The aero-engine hot-end component of temperature, more excellent performance, especially turbo blade.The high generation engine turbine blade in part
Operating temperature has been even up to more than 1550 DEG C.So high operating temperature so that common equiaxed grain structure high-temperature alloy blades
And forging blade has been difficult to meet this working condition requirement.Single crystal super alloy is due to fusing point height, elevated temperature strength and creep resistant
The advantages that function admirable, has obtained more and more applications.It should be noted that in order to realize single crystal super alloy casting
Directional solidification, can single crystal blade hot investment casting the group tree stage by single crystal blade be incorporated into one by sprue cup, running gate system,
In the module of casting, crystal selector and water-cooled chassis composition.The repeatability of the group tree of wax-pattern module, module intensity, chassis are smooth
Property etc. can directly affect the qualification rate and quality of casting.
The content of the invention
(1) technical problem solved
In view of the deficiencies of the prior art, the present invention provides a kind of small-medium size single crystal blade group tree and its a preparation side
Method, wax-pattern module quality causes follow-up scrappage with reducing therefore during can improving small-medium size single crystal blade hot investment casting
Group tree method.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：A kind of small-medium size single crystal blade is used
Wax module tree structure, includes running gate system wax-pattern, crystal selector, single crystal blade, riser and water-cooled chassis wax template, in
Sprue cup wax-pattern, top casting road wax-pattern and the bottom pour mold road wax-pattern that column tube wax-pattern is sequentially connected；
The crystal selector, single crystal blade, riser are sequentially connected fixation；The middle column tube wax-pattern bottom and water-cooled chassis
Wax template is locked by bolt；Central runner is formed after shell processed.Middle column tube answers Design Orientation benchmark, prevents top/bottom pour mold road, chassis
Relative to the rotation of middle column tube during group tree.Repeatability in guarantee group tree system is good.
Crystal selector bonding mouth is uniformly provided with the water-cooled chassis wax template, to ensure the definite of position in blade group tree
Property；The crystal selector lower end is bonded mouth by crystal selector and is adhered on water-cooled chassis wax template；The riser upper end and top
Running channel wax-pattern is mutually fixed；Pre-buried Al matter disk in the water-cooled chassis wax template, is that pure wax water-cooled chassis exists in order to prevent
Press buckling deformation in the cooling procedure after wax；Metallic rod is embedded with the middle column tube wax-pattern, it is described to ensure module intensity
Metal rod outer surface wax layer has the thickness of 1.5-3mm.Separately designed on the top casting road wax-pattern, the branch running channel of bottom pour mold road wax-pattern
There is running channel filtering plug, the addition energy effectively preventing of filtering plug, which is mixed in follow-up casting process, to be entered in casting, forms stray crystal,
Destroy the integrality of monocrystalline.
Pre-buried Al matter disk upper surface is equipped with the groove of 2-5mm depths in the water-cooled chassis wax template, makes Al disks and table
Mercolized wax layer combination is closer, and aluminium dish caused by prevent wax material contraction distortion is peeled off with wax material, causes flatness to reduce.It is described
The wax ring of 0.1-1mm high is additionally provided with Al matter disk upper surface grooves, prevents that formwork occur during shell subsequently processed peels off wax-pattern
Or layering, and the wax ring is recessed on formwork bottom plate, does not influence whole formwork bottom plate and is contacted with follow-up foundry furnace water cooled copper plate
The flatness in face.
The top casting road wax-pattern, the porosity of the filtering plug in the branch running channel of bottom pour mold road wax-pattern are 30-70ppi.
The riser is fixed by locating piece and the positioning of top casting road wax-pattern, and the locating piece section is U-shaped.
A kind of small-medium size single crystal blade preparation method of group tree, comprises the following steps：
(1) Al matter disk casted die moulds are made according to Al matter circular tray designs size, carries out the related process such as die mould and produce
Al matter disks with 2-5mm deep trench；Water-cooled chassis casted die mould is made according to water-cooled chassis design size, by Al matter disks
It is embedded in the middle part of water-cooled chassis casted die mould and carries out wax-pattern die mould, obtains water-cooled chassis wax-pattern；Wherein, Al matter disk groove upper surface
It is additionally provided with the wax ring of 0.1-1mm high；
(2) feed trumpet casted die mould is made according to feed trumpet design size, metallic rod is embedded in feed trumpet die mould tool
Entreat position to carry out wax-pattern die mould, obtain middle column tube wax-pattern；Wherein, the thickness that metal rod outer surface wax layer has 1.5-3mm is retained；
(3) crystal selector, single crystal blade and riser are first subjected to pre-assembled and fixation；
(4) sprue cup wax-pattern, top casting road wax-pattern and bottom pour mold road wax-pattern are connected by middle column tube wax-pattern；By middle column tube wax
Locked with water-cooled chassis wax-pattern by bolt mould bottom；
(5) riser is connected and fixed with top casting road wax-pattern by riser front end U-shaped locating piece；Finally by crystal selector
End is adhered on water-cooled chassis wax-pattern bonding mouth, to obtain the final product.
Bottom pour mold road top casting road is used when being cast using rising pouring method, top casting road, but nothing are used when being cast using teeming method
Which kind of running channel the porosity of running channel filtering plug running channel filtering plug should all be designed with running gate system in 30-70ppi by.Filtering plug
Addition energy effectively preventing be mixed in follow-up casting process and enter in casting, form stray crystal, destroy the integrality of monocrystalline.When
When being poured into a mould using teeming method, siphon runner can be substituted by refill-unit, and by central runner at lower section 1-2cm of top running channel
Put place's closure；When being poured into a mould using rising pouring method, top casting road does not design running channel filtering plug.
(3) beneficial effect
The present invention provides a kind of small-medium size single crystal blade group tree method, small-medium size single crystal blade precision can be improved
Wax-pattern module quality in casting process, reduces the single crystal blade hot investment casting scrappage caused by above-mentioned reason.Specifically include with
Lower beneficial effect：
1. a group tree method is effective must to control the relative position of each element during group tree, repeatability is improved；
2. effectively enhance group an intensity for tree system, reduce because wax-pattern destroys or formwork crackle and caused by scrap；
3. significantly improve the flatness of module and formwork bottom plate, reduce because of polishing base plate flatness and caused by Tao Xin
Fracture and because bottom plate poor flatness and caused by bleed-out；
4. application this method prepare formwork in casting process molten metal can by flowing into casting after running channel filtering plug,
Effectively reduce slag, ceramic particle or other heterogeneous granulars enter casting mould shell cavity possibility, reduce casting be mingled with and
Stray crystal defect causes the probability scrapped.
Brief description of the drawings
Fig. 1 is the structure diagram of present invention group tree；
Fig. 2 is the structure diagram of Al matter disk of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of small-medium size single crystal blade wax-pattern component, bag
Running gate system wax-pattern crystal selector 1, single crystal blade 2, riser 3 and water-cooled chassis wax template 5, the running gate system wax-pattern are included
Include the sprue cup wax-pattern 4 being sequentially connected by middle column tube wax-pattern 6, top casting road wax-pattern 7 and bottom pour mold road wax-pattern 8；
The crystal selector 1, single crystal blade 2, riser 3 are sequentially connected fixation；Middle 6 bottom of column tube wax-pattern and water cooling
Chassis wax template 5 is locked by bolt；Crystal selector bonding mouth 10, the choosing are uniformly provided with the water-cooled chassis wax template 5
Brilliant 1 lower end of device is bonded mouth 10 by crystal selector and is adhered on water-cooled chassis wax template 5；3 upper end of riser and top casting road wax
7 phase of mould is fixed；Pre-buried Al matter disk 8 in the water-cooled chassis wax template 5；Metal is embedded with the middle column tube wax-pattern 6
Bar；Running channel filtering plug 9 is respectively designed with the top casting road wax-pattern 7, the branch running channel of bottom pour mold road wax-pattern 8.
Pre-buried 13 upper surface of Al matter disk is equipped with the groove 11 of 2-5mm depths, the Al in the water-cooled chassis wax template 5
The wax ring of 0.1-1mm high is additionally provided with 13 upper surface groove 14 of matter disk.
The metal rod outer surface wax layer has the thickness of 1.5-3mm.
The top casting road wax-pattern 7, the porosity of the filtering plug 9 in the branch running channel of bottom pour mold road wax-pattern 8 are 30-70ppi.
The riser 3 is fixed by locating piece 12 and the positioning of top casting road wax-pattern 7, and 12 section of locating piece is U-shaped.
A kind of small-medium size single crystal blade preparation method of group tree, comprises the following steps：
(1) Al matter disk casted die moulds are made according to 13 design size of Al matter disk, carries out the production of the related process such as die mould
The Al matter disk 13 of 2-5mm deep trench must be carried；Water-cooled chassis casted die mould is made according to water-cooled chassis design size, by Al matter
Disk 13, which is embedded in the middle part of water-cooled chassis casted die mould, carries out wax-pattern die mould, obtains water-cooled chassis wax-pattern 5；Wherein, Al matter disk 13
14 upper surface of groove is additionally provided with the wax ring of 0.1-1mm high；
(2) feed trumpet casted die mould is made according to feed trumpet design size, metallic rod is embedded in feed trumpet die mould tool
Entreat position to carry out wax-pattern die mould, obtain middle column tube wax-pattern 6；Wherein, the thickness that metal rod outer surface wax layer has 1.5-3mm is retained；
(3) crystal selector 1, single crystal blade 2 and riser 3 are first subjected to pre-assembled and fixation；
(4) sprue cup wax-pattern 4, top casting road wax-pattern 7 and bottom pour mold road wax-pattern 8 are connected by middle column tube wax-pattern 6；By center pillar
Locked with water-cooled chassis wax-pattern 5 by bolt 6 bottom of pipe wax-pattern；
(5) riser 3 is connected and fixed with top casting road wax-pattern 7 by 3 front end U-shaped locating piece of riser；Finally will choosing
Brilliant 1 end of device is adhered to water-cooled chassis wax-pattern 5 and is bonded on mouth 11, to obtain the final product.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment
Intrinsic key element.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of small-medium size single crystal blade wax module tree structure, include running gate system wax-pattern, crystal selector, single crystal blade,
Riser and water-cooled chassis wax template, it is characterised in that：Sprue cup wax-pattern, the top casting road wax being sequentially connected by middle column tube wax-pattern
Mould and bottom pour mold road wax-pattern；
The crystal selector, single crystal blade, riser are sequentially connected fixation；The middle column tube wax-pattern bottom and water-cooled chassis wax-pattern
Plate is locked by bolt；Crystal selector bonding mouth is uniformly provided with the water-cooled chassis wax template, the crystal selector lower end passes through
Crystal selector bonding mouth is adhered on water-cooled chassis wax template；The riser upper end is mutually fixed with top casting road wax-pattern；The water
Pre-buried Al matter disk in cold chassis wax template；Metallic rod is embedded with the middle column tube wax-pattern；The top casting road wax-pattern, bottom
Running channel filtering plug is respectively designed with the branch running channel of running channel wax-pattern.
A kind of 2. small-medium size single crystal blade wax module tree structure according to claim 1, it is characterised in that：The water
Pre-buried Al matter disk upper surface is equipped with the groove of 2-5mm depths in cold chassis wax template, in the Al matter disk upper surface groove
It is additionally provided with the wax ring of 0.1-1mm high.
A kind of 3. small-medium size single crystal blade wax module tree structure according to claim 1, it is characterised in that：The gold
Belong to the thickness that rod outer surface wax layer has 1.5-3mm.
A kind of 4. small-medium size single crystal blade wax module tree structure according to claim 1, it is characterised in that：Described
Top casting road wax-pattern, bottom pour mold road wax-pattern branch running channel in the porosity of filtering plug be 30-70ppi.
A kind of 5. small-medium size single crystal blade wax module tree structure according to claim 1, it is characterised in that：Described
Riser is fixed by locating piece and the positioning of top casting road wax-pattern, and the locating piece section is U-shaped.
A kind of 6. small-medium size single crystal blade preparation method of group tree, it is characterised in that：Comprise the following steps：
(1) Al matter disk casted die moulds are made according to Al matter circular tray designs size, carries out the related process such as die mould and produce and must carry
The Al matter disks of 2-5mm deep trench；Water-cooled chassis casted die mould is made according to water-cooled chassis design size, Al matter disks is pre-buried
Wax-pattern die mould is carried out in the middle part of water-cooled chassis casted die mould, obtains water-cooled chassis wax-pattern；Wherein, Al matter disk groove upper surface is also set
There is the wax ring of 0.1-1mm high；
(2) feed trumpet casted die mould is made according to feed trumpet design size, metallic rod is embedded in the central position of feed trumpet die mould tool
Put and carry out wax-pattern die mould, obtain middle column tube wax-pattern；Wherein, the thickness that metal rod outer surface wax layer has 1.5-3mm is retained；
(3) crystal selector, single crystal blade and riser are first subjected to pre-assembled and fixation；
(4) sprue cup wax-pattern, top casting road wax-pattern and bottom pour mold road wax-pattern are connected by middle column tube wax-pattern；By middle column tube wax-pattern bottom
Locked with water-cooled chassis wax-pattern by bolt in portion；
(5) riser is connected and fixed with top casting road wax-pattern by riser front end U-shaped locating piece；Finally by crystal selector end
It is adhered on water-cooled chassis wax-pattern bonding mouth, to obtain the final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711445497.8A CN107931523A (en) | 2017-12-27 | 2017-12-27 | A kind of small-medium size single crystal blade wax module tree structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711445497.8A CN107931523A (en) | 2017-12-27 | 2017-12-27 | A kind of small-medium size single crystal blade wax module tree structure and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107931523A true CN107931523A (en) | 2018-04-20 |
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| CN201711445497.8A Withdrawn CN107931523A (en) | 2017-12-27 | 2017-12-27 | A kind of small-medium size single crystal blade wax module tree structure and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604526A (en) * | 2019-01-17 | 2019-04-12 | 中国科学院金属研究所 | A method of preventing the formation of single crystal super alloy moving blade stray crystal defect |
| CN110090919A (en) * | 2019-03-12 | 2019-08-06 | 江苏圣大中远电气有限公司 | Aluminium brone casting melts casting technique |
| CN110465625A (en) * | 2019-09-11 | 2019-11-19 | 中国科学院金属研究所 | A kind of ceramic shell preparation method improving the physics scab of high temperature alloy directional solidification castings |
| CN110640084A (en) * | 2019-10-29 | 2020-01-03 | 贵州安吉航空精密铸造有限责任公司 | Preparation method of investment casting shell |
| CN114733999A (en) * | 2022-03-07 | 2022-07-12 | 北京航空材料研究院股份有限公司 | Bottom pouring type wax mold pouring system for large-scale wax mold and investment casting mold |
| CN115069978A (en) * | 2021-03-16 | 2022-09-20 | 中国航发商用航空发动机有限责任公司 | Casting system and casting method for splash plate of combustion chamber |
-
2017
- 2017-12-27 CN CN201711445497.8A patent/CN107931523A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604526A (en) * | 2019-01-17 | 2019-04-12 | 中国科学院金属研究所 | A method of preventing the formation of single crystal super alloy moving blade stray crystal defect |
| CN110090919A (en) * | 2019-03-12 | 2019-08-06 | 江苏圣大中远电气有限公司 | Aluminium brone casting melts casting technique |
| CN110465625A (en) * | 2019-09-11 | 2019-11-19 | 中国科学院金属研究所 | A kind of ceramic shell preparation method improving the physics scab of high temperature alloy directional solidification castings |
| CN110465625B (en) * | 2019-09-11 | 2021-01-12 | 中国科学院金属研究所 | Preparation method of ceramic shell for improving physical sand adhesion of high-temperature alloy directional solidification casting |
| CN110640084A (en) * | 2019-10-29 | 2020-01-03 | 贵州安吉航空精密铸造有限责任公司 | Preparation method of investment casting shell |
| CN115069978A (en) * | 2021-03-16 | 2022-09-20 | 中国航发商用航空发动机有限责任公司 | Casting system and casting method for splash plate of combustion chamber |
| CN114733999A (en) * | 2022-03-07 | 2022-07-12 | 北京航空材料研究院股份有限公司 | Bottom pouring type wax mold pouring system for large-scale wax mold and investment casting mold |
| CN114733999B (en) * | 2022-03-07 | 2023-12-15 | 北京航空材料研究院股份有限公司 | Bottom-pouring type wax pattern pouring system for large-scale wax pattern and investment casting mold |
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Application publication date: 20180420 |
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