CN107716863A - A kind of combustion engine turbine bucket casting method - Google Patents
A kind of combustion engine turbine bucket casting method Download PDFInfo
- Publication number
- CN107716863A CN107716863A CN201710818487.8A CN201710818487A CN107716863A CN 107716863 A CN107716863 A CN 107716863A CN 201710818487 A CN201710818487 A CN 201710818487A CN 107716863 A CN107716863 A CN 107716863A
- Authority
- CN
- China
- Prior art keywords
- shell
- aluminium oxide
- combustion engine
- leaf
- oxide ceramics
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 18
- 238000005266 casting Methods 0.000 title description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000000919 ceramic Substances 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000002386 leaching Methods 0.000 claims abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- 239000010410 layer Substances 0.000 claims description 12
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 9
- 239000002344 surface layer Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005495 investment casting Methods 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of method that combustion engine turbine bucket is cast with aluminium oxide ceramics shell, including：1）The aluminium oxide ceramics shell for being drenched sand method with slurry is stained with movable vane piece wax-pattern and being prepared certain number of plies；2）When between blade tip seal tooth ceramic shell apart from adhesion and less than it is anti-sticking apart from when, with wax disk(-sc) wrap up leaf at the top of position；3）Continue to arrive desired shell number processed, each slurry and sand all on the wax disk(-sc) of cleaning leaf top with being stained with slurry leaching sand method on movable vane piece wax-pattern；4）Shell dewaxing, burn residual wax；5）Mixed liquor with preparing silicon collosol and alumina powder；6）Position at the top of leaf is immersed in mixed liquor；7）By position at the top of leaf in drying at room temperature；8）Shell is heated to 1400~1500 DEG C, is incubated 0.5~1h, the temperature for then cooling the temperature to technological requirement is poured into a mould.Ceramic shell sticks together between the present invention can prevent blade tip seal tooth, avoids producing thermal center, significantly improves the castability of movable vane piece.
Description
Technical field
The present invention relates to mould hot investment casting, specifically a kind of combustion engine turbine bucket hot investment casting ceramic shell system
Make method.
Background technology
There is gland sealing gear position at the top of the combustion engine turbine bucket leaf of part, when the distance between adjacent gland sealing gear is smaller, molten
Mould hot investment casting is stained with during slurry leaching sand, and the ceramic shell between gland sealing gear sticks together, and the position thermal center is occurred, causes leaf
There is shrinkage cavity defect in top position.
The content of the invention
The invention aims to solve above-mentioned technical problem, there is provided a kind of combustion engine turbine bucket hot investment casting pottery
Porcelain shell manufacture method, ceramic shell sticks together between the present invention can prevent blade tip seal tooth, avoids producing thermal center.
Realize the technical scheme is that：A kind of method that combustion engine turbine bucket is cast with aluminium oxide ceramics shell,
It is characterised in that it includes following steps：
1）By being stained with slurry, leaching sand, the dry aluminium oxide ceramics shell for preparing certain number of plies, specific layer repeatedly on movable vane piece wax-pattern
Ceramic shell of the number between blade tip seal tooth, which does not stick together, to be defined；
2）When ceramic shell between blade tip seal tooth distance be less than it is anti-sticking apart from when, with wax disk(-sc) wrap up leaf at the top of position；
3）Slurry, leaching sand, drying are stained with continuation repeatedly on movable vane piece wax-pattern, each all over the slurry and sand cleared up on the wax disk(-sc) of leaf top
Son, untill the shell number processed of requirement is reached；
4）Shell dewaxing, burn residual wax；
5）Mixed liquor with preparing silicon collosol and alumina powder；
6）Position at the top of leaf is immersed in the mixed liquor of Ludox and alumina powder；
7）By position at the top of leaf in drying at room temperature；
8）Before cast, shell is first heated to 1400~1500 DEG C, 0.5~1h is incubated, shell temperature is then down to technique
It is required that temperature poured into a mould.
The step 1）In, the aluminium oxide ceramics shell for preparing certain number of plies includes making surface layer and makes backing layer；
The making surface layer, alumina powder is 320 mesh in used surface layer slurry, and the mass ratio of aluminum oxide and Ludox is 3：
1, sand is 100 mesh emergies.
The making backing layer, aluminum oxide is the quality 2 of 200 mesh, aluminum oxide and Ludox in used backing layer slurry：1,
Sand is 46 mesh emergies.
The anti-sticking distance is 2mm.
The step 5）In, the mixed liquor with preparing silicon collosol and alumina powder, the middle position of used alumina powder
Particle diameter is 4~7 microns, and the mass ratio of alumina powder and Ludox is 1：9.
The step 6）In, time in the mixed liquor that position at the top of leaf is immersed to Ludox and alumina powder for 10~
15 minutes.
The step 7）In, described by position at the top of leaf is 5 hours in the time of drying at room temperature.
The step 6）、7）Repeat 1~3 time.
The beneficial effects of the invention are as follows：
Ceramic shell sticks together between the present invention can prevent blade tip seal tooth, avoids producing thermal center, it is saturating to significantly improve combustion engine
The castability of translation blade.
Embodiment
A kind of method that combustion engine turbine bucket is cast with aluminium oxide ceramics shell, comprises the following steps：
1）By being stained with slurry, leaching sand, the dry aluminium oxide ceramics shell for preparing certain number of plies, specific layer repeatedly on movable vane piece wax-pattern
Ceramic shell of the number between blade tip seal tooth, which does not stick together, to be defined；The aluminium oxide ceramics shell bag for preparing certain number of plies
Include and make surface layer and making backing layer；When making surface layer, alumina powder is 320 mesh in used surface layer slurry, aluminum oxide with
The mass ratio of Ludox is 3：1, sand is 100 mesh emergies.When making backing layer, aluminum oxide is in used backing layer slurry
The quality 2 of 200 mesh, aluminum oxide and Ludox：1, sand is 46 mesh emergies.
2）When the distance of ceramic shell between blade tip seal tooth is less than anti-sticking distance 2mm, position at the top of leaf is wrapped up with wax disk(-sc)；
3）Slurry, leaching sand, drying are stained with continuation repeatedly on movable vane piece wax-pattern, each all over the slurry and sand cleared up on the wax disk(-sc) of leaf top
Son, untill the shell number processed of requirement is reached；
4）Shell dewaxing, burn residual wax；
5）Mixed liquor with preparing silicon collosol and alumina powder；The median of used alumina powder is 4~7 microns, oxidation
The mass ratio of aluminium powder and Ludox is 1：9.
6）Position at the top of leaf is immersed in the mixed liquor of Ludox and alumina powder 10~15 minutes.
7）By position at the top of leaf in drying at room temperature 5 hours；And repeat step 6）、7）1~3 time.
8）Before cast, shell is first heated to 1400~1500 DEG C, 0.5~1h is incubated, is then down to shell temperature
The temperature of technological requirement is poured into a mould.
Claims (9)
- A kind of 1. method that combustion engine turbine bucket is cast with aluminium oxide ceramics shell, it is characterised in that comprise the following steps：1）By being stained with slurry, leaching sand, the dry aluminium oxide ceramics shell for preparing certain number of plies, specific layer repeatedly on movable vane piece wax-pattern Ceramic shell of the number between blade tip seal tooth, which does not stick together, to be defined；2）When ceramic shell between blade tip seal tooth distance be less than it is anti-sticking apart from when, with wax disk(-sc) wrap up leaf at the top of position；3）Slurry, leaching sand, drying are stained with continuation repeatedly on movable vane piece wax-pattern, each all over the slurry and sand cleared up on the wax disk(-sc) of leaf top Son, untill the shell number processed of requirement is reached；4）Shell dewaxing, burn residual wax；5）Mixed liquor with preparing silicon collosol and alumina powder；6）Position at the top of leaf is immersed in the mixed liquor of Ludox and alumina powder；7）By position at the top of leaf in drying at room temperature；8）Before cast, shell is first heated to 1400~1500 DEG C, 0.5~1h is incubated, shell temperature is then down to technique It is required that temperature poured into a mould.
- 2. the method for combustion engine turbine bucket is cast with aluminium oxide ceramics shell according to claim 1, it is characterised in that：Institute State step 1）In, the aluminium oxide ceramics shell for preparing certain number of plies includes making surface layer and makes backing layer.
- 3. the method for combustion engine turbine bucket is cast with aluminium oxide ceramics shell according to claim 2, it is characterised in that：Institute State making surface layer, alumina powder is 320 mesh in used surface layer slurry, and the mass ratio of aluminum oxide and Ludox is 3：1, sand For 100 mesh emergies.
- 4. the method for combustion engine turbine bucket is cast with aluminium oxide ceramics shell according to claim 2, it is characterised in that：Institute State making backing layer, aluminum oxide is the quality 2 of 200 mesh, aluminum oxide and Ludox in used backing layer slurry：1, sand is 46 mesh Emergy.
- 5. the method for combustion engine turbine bucket is cast with aluminium oxide ceramics shell according to claim 1, it is characterised in that：Institute It is 2mm to state anti-sticking distance.
- 6. the method for combustion engine turbine bucket is cast with aluminium oxide ceramics shell according to claim 1, it is characterised in that：Institute State step 5）In, the mixed liquor with preparing silicon collosol and alumina powder, the median of used alumina powder is 4~7 The mass ratio of micron, alumina powder and Ludox is 1：9.
- 7. the method for combustion engine turbine bucket is cast with aluminium oxide ceramics shell according to claim 1, it is characterised in that：Institute State step 6）In, the time in the mixed liquor that position at the top of leaf is immersed to Ludox and alumina powder is 10~15 minutes.
- 8. the method for combustion engine turbine bucket is cast with aluminium oxide ceramics shell according to claim 1, it is characterised in that：Institute State step 7）In, described by position at the top of leaf is 5 hours in the time of drying at room temperature.
- 9. the method for combustion engine turbine bucket is cast with aluminium oxide ceramics shell according to claim 1, it is characterised in that：Institute State step 6）、7）Repeat 1~3 time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818487.8A CN107716863B (en) | 2017-09-12 | 2017-09-12 | Casting method for turbine moving blade of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818487.8A CN107716863B (en) | 2017-09-12 | 2017-09-12 | Casting method for turbine moving blade of gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107716863A true CN107716863A (en) | 2018-02-23 |
| CN107716863B CN107716863B (en) | 2020-02-14 |
Family
ID=61206075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710818487.8A Active CN107716863B (en) | 2017-09-12 | 2017-09-12 | Casting method for turbine moving blade of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107716863B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475820A (en) * | 2020-11-23 | 2021-03-12 | 东方电气集团东方汽轮机有限公司 | Method for machining blade top of movable blade of hollow blade of gas turbine |
| CN115846626A (en) * | 2022-12-06 | 2023-03-28 | 嘉利特荏原泵业有限公司 | Method and device for manufacturing catalytic oil slurry pump body lining |
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|---|---|---|---|---|
| JP2008213029A (en) * | 2007-03-01 | 2008-09-18 | Taiyo Machinery Co Ltd | Mold removal method in lost foam casting method |
| CN101695741A (en) * | 2009-10-30 | 2010-04-21 | 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 |
| CN101767187A (en) * | 2008-12-30 | 2010-07-07 | 沈阳黎明航空发动机(集团)有限责任公司 | Positioning process method of complex and hollow high vortex blade ceramic core |
| US20120163979A1 (en) * | 2010-12-23 | 2012-06-28 | General Electric Company | Processes for producing components containing ceramic-based and metallic materials |
| CN103071765A (en) * | 2012-12-27 | 2013-05-01 | 清华大学 | Partial air cooling method for precast aperture passage in investment casting shell |
| CN103894547A (en) * | 2014-03-26 | 2014-07-02 | 东方电气集团东方汽轮机有限公司 | Precision casting method of blade casting with margin plate |
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2017
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| JP2008213029A (en) * | 2007-03-01 | 2008-09-18 | Taiyo Machinery Co Ltd | Mold removal method in lost foam casting method |
| CN101767187A (en) * | 2008-12-30 | 2010-07-07 | 沈阳黎明航空发动机(集团)有限责任公司 | Positioning process method of complex and hollow high vortex blade ceramic core |
| CN101695741A (en) * | 2009-10-30 | 2010-04-21 | 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 |
| US20120163979A1 (en) * | 2010-12-23 | 2012-06-28 | General Electric Company | Processes for producing components containing ceramic-based and metallic materials |
| CN103071765A (en) * | 2012-12-27 | 2013-05-01 | 清华大学 | Partial air cooling method for precast aperture passage in investment casting shell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475820A (en) * | 2020-11-23 | 2021-03-12 | 东方电气集团东方汽轮机有限公司 | Method for machining blade top of movable blade of hollow blade of gas turbine |
| CN115846626A (en) * | 2022-12-06 | 2023-03-28 | 嘉利特荏原泵业有限公司 | Method and device for manufacturing catalytic oil slurry pump body lining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107716863B (en) | 2020-02-14 |
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