CN115889688A - Method for preventing foreign matters from entering inner cavity of hollow turbine blade - Google Patents
Method for preventing foreign matters from entering inner cavity of hollow turbine blade Download PDFInfo
- Publication number
- CN115889688A CN115889688A CN202211582141.XA CN202211582141A CN115889688A CN 115889688 A CN115889688 A CN 115889688A CN 202211582141 A CN202211582141 A CN 202211582141A CN 115889688 A CN115889688 A CN 115889688A
- Authority
- CN
- China
- Prior art keywords
- inner cavity
- water
- turbine blade
- soluble wax
- hollow turbine
- 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 38
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 238000010146 3D printing Methods 0.000 claims abstract description 12
- 238000003754 machining Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 239000008236 heating water Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000005488 sandblasting Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000004576 sand Substances 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000005495 investment casting Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000007664 blowing Methods 0.000 description 6
- 238000005498 polishing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention belongs to the technical field of investment precision casting, and particularly relates to a method for preventing foreign matters of a hollow turbine blade from entering an inner cavity, wherein a 3D printing resin mold is adopted to pour water-soluble wax to seal the opening position of the inner cavity. The water-soluble wax is adopted to seal the opening of the inner cavity, and has the advantages of good sealing effect and easy removal. The invention comprises a hollow turbine blade, water-soluble wax, 3D printing equipment and resin, wherein the hollow turbine blade adopts the formed water-soluble wax to seal an inner cavity opening, adopts a 3D printed resin mold to pour the water-soluble wax, adopts modeling software to design the mold according to the shape of the inner cavity opening, then adopts a 3D printing mode to print the resin mold, pours the melted water-soluble wax into the formed resin mold, and takes out the melted water-soluble wax to seal the hollow turbine blade opening after cooling. Simplify mould preparation process through 3D printing resin mould, the existing better shutoff effect of water-soluble wax is favorable to taking out again, guarantees to polish, blow sand, can't get into the inner chamber by the foreign matter in the machining process.
Description
Technical Field
The invention belongs to the technical field of investment precision casting, and particularly relates to a method for preventing foreign matters of a hollow turbine blade from entering an inner cavity.
Background
The requirement of the aircraft engine on the inner cavity is very high, and foreign matters are not allowed in the inner cavity. Foreign matters in the inner cavity block a blade cooling channel to influence the smoothness of cooling air, so that hot spots are generated on the blade, and the blade is seriously damaged due to thermochemical corrosion caused by the action of heat and stress in the service process; in addition, foreign matters in the inner cavity may fly out of the inner cavity in the high-speed running process of the engine, and the blades running at high speed may be damaged after colliding with the surplus objects, so that the use safety of the engine is influenced, and major accidents are caused. Therefore, in the hollow turbine blade, especially the hollow turbine blade with a complex inner cavity structure, foreign matters are difficult to remove after entering the inner cavity, the foreign matters in the inner cavity are difficult to detect, and great potential safety hazards are generated. Therefore, foreign matters are prevented from entering the inner cavity in the processes of polishing, sand blowing and machining.
In the traditional method, an adhesive tape or a rubber block is used for blocking the opening of the inner cavity, part of adhesive glue is remained at the opening of the inner cavity of the blade after the adhesive tape is blocked and removed, and the adhesive glue is difficult to remove; adopt the shutoff of rubber sprue, the rubber sprue is difficult to be unanimous with inner chamber opening shape, needs to be to the special sprue of opening design of different shapes, and the shutoff effect is relatively poor, has the risk that drops, causes the shutoff to become invalid.
Therefore, how to realize a method for preventing foreign matters from entering the inner cavity of the blade in the preparation process of the hollow turbine blade, which has low cost and good use effect, is a technical problem which needs to be solved urgently.
Disclosure of Invention
The invention aims to design a method for preventing foreign matters of a hollow turbine blade from entering an inner cavity, which has the advantages of good use effect, simple method and lower cost.
The invention adopts the following technical scheme:
a method for preventing foreign matters from entering an inner cavity of a hollow turbine blade comprises the following steps:
1) The opening position of the inner cavity is blocked by water-soluble wax;
2) Pouring water-soluble wax by adopting a 3D printed resin mould;
3) Heating water soluble wax to 65-70 deg.C, introducing the molten wax into resin mold, cooling water soluble wax, taking out the wax block, placing at the opening of the blade cavity, and sealing the cavity.
The water-soluble wax has the advantages of good plugging effect and easy removal.
Preferably, the hollow turbine blade inner chamber opening part is the dysmorphism structure mostly, adopts molding software design mould according to inner chamber opening shape, adopts the mode of 3D printing to print the resin mould again.
Preferably, the mould is designed as a mould with several parts.
Preferably, in the step 3), if a gap exists between the inner cavity and the blocking block, the inner cavity is blocked and filled by adopting molten water-soluble wax, so that the opening of the inner cavity is completely blocked; in order to accelerate the dissolution rate of the water-soluble wax, a 1:10 citric acid solution, and adding and stirring.
Preferably, the method further comprises the step 4) of subjecting the blade to all procedures of grinding, sand blowing, machining and the like under the condition that the inner cavity is sealed by the water-soluble wax.
Preferably, the method further comprises the step 5) of unloading the blocking block: preparing a citric acid water solution, wherein the specific gravity of citric acid and water is 1:10, the leaves with the water-soluble wax are placed in a prepared aqueous solution of citric acid.
Preferably, in order to accelerate the dissolution speed of the water-soluble wax, rapid stirring is adopted, and the stirring speed is 60-90r/min.
Preferably, the method further comprises the step 6) of taking out the blades after the water-soluble wax is completely removed from the opening of the inner cavity, and drying the blades.
The invention has the beneficial effects that:
(1) The invention can effectively prevent foreign matters from entering the inner cavity of the hollow turbine blade in the processes of polishing, sand blowing, machining and the like, and has the advantages of simple method, high efficiency, strong applicability and universality for blades with different inner cavity structures.
(2) The invention comprises a hollow turbine blade, water-soluble wax, 3D printing equipment and resin, wherein the hollow turbine blade adopts the formed water-soluble wax to seal an inner cavity opening, adopts a 3D printed resin mold to pour the water-soluble wax, adopts modeling software to design the mold according to the shape of the inner cavity opening, then adopts a 3D printing mode to print the resin mold, pours the melted water-soluble wax into the formed resin mold, and takes out the melted water-soluble wax to seal the hollow turbine blade opening after cooling.
(3) According to the invention, the preparation process of the mold is simplified through the 3D printing resin mold, the water-soluble wax has a good plugging effect and is beneficial to taking out, and foreign matters can not enter the inner cavity in the processes of polishing, sand blowing and machining.
Drawings
FIG. 1 is a schematic view of a hollow turbine blade
FIG. 2 is a schematic view of the cavity of a hollow turbine blade
FIG. 3 is a schematic view of a block mold
In the figure: 1. the hollow turbine guide blade comprises an inner cavity opening, 2, a blocking block, 3, a blocking block mold, 202 and a blocking block in the mold.
Detailed description of the invention
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The present invention will be described in detail with reference to the following examples, but the scope of the present invention is not limited to the following examples.
Most of the openings of the inner cavities of the hollow turbine blades are of special-shaped structures, and the shape of wax for plugging the openings of the inner cavities is difficult to be consistent with the openings of the inner cavities. The method is characterized in that a set of mold tooling is made for each inner cavity, so that the cost is greatly increased, the 3D printing resin mold is adopted for pouring water-soluble wax, the mold is designed by adopting modeling software according to the opening shape of the inner cavity and can be designed into a plurality of molds, then the resin mold is printed in a 3D printing mode, and meanwhile, in order to accelerate the dissolving speed of the water-soluble wax, the method comprises the following steps of: 10 citric acid solution, and adding and stirring.
Heating water soluble wax to 65-70 deg.C, introducing the molten wax into resin mold, cooling water soluble wax, taking out the wax block, placing at the opening of the blade cavity, and sealing the cavity.
If a gap exists between the inner cavity and the plugging block, the molten water-soluble wax is adopted for plugging and filling, and the opening of the inner cavity is completely plugged.
The blade is subjected to all procedures of polishing, sand blowing, machining and the like under the condition that the inner cavity is sealed by the water-soluble wax.
Preparing a citric acid aqueous solution, wherein the specific gravity of citric acid and water is 1:10, the leaves with the water-soluble wax are placed in a prepared aqueous solution of citric acid.
In order to accelerate the dissolution speed of the water-soluble wax, rapid stirring is adopted.
And after the water-soluble wax is completely removed from the opening of the inner cavity, taking out the blade, and drying.
Example 1
As shown in figures 1-3, a method for preventing foreign matters from entering an inner cavity of a hollow turbine blade comprises the steps of firstly adopting a blocking block 2 of an inner cavity opening 1 of a hollow turbine guide blade designed by UG modeling software according to the structure of the inner cavity of the blade, designing an inner cavity blocking block mold 3 according to the use requirement, designing the mold into 9 pieces, adopting a special resin material, and completing mold preparation in a 3D printing mode.
The turbine blade plugging block is reduced by 0.2mm on one side after being designed according to the shrinkage rate of the water-soluble wax pattern, so that the plugging block can be smoothly inserted into the opening of the inner cavity.
Heating water soluble wax to 70 ℃, pouring the molten water soluble wax into a resin mold, cooling the wax material for 30-60 min, placing the formed water soluble wax plugging block at the opening of the inner cavity of the hollow turbine guide blade, and plugging the gap between the plugging block and the opening of the inner cavity of the hollow turbine guide blade by drip irrigation and water absorption. Such as the block 202 in the mold shown in fig. 3.
Removing redundant wax materials on the surface of the blade;
the blade is subjected to all procedures of polishing, sand blowing, machining and the like under the condition that the inner cavity is sealed by the water-soluble wax.
Placing the blade which finishes all the processes in a water tank which is provided with a stirring device and is filled with a citric acid solution, and preparing an aqueous solution of citric acid, wherein the specific gravity of the citric acid and the water is 1:10.
in order to accelerate the dissolving speed of the water-soluble wax, rapid stirring is adopted, and the stirring speed is 60-90r/min.
And after the water-soluble wax is completely removed from the opening of the inner cavity, taking out the blade, and drying.
Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.
Claims (8)
1. A method for preventing foreign matters from entering an inner cavity of a hollow turbine blade is characterized in that: the method comprises the following steps:
1) The opening position of the inner cavity is blocked by water-soluble wax;
2) Pouring water-soluble wax by adopting a 3D printed resin mould;
3) Heating water soluble wax to 65-70 deg.C, introducing molten wax into resin mold, cooling water soluble wax, taking out wax block, placing at the opening of the blade cavity, and sealing the cavity.
2. The method for preventing the foreign matters in the hollow turbine blade from entering the inner cavity of the hollow turbine blade as claimed in claim 1, wherein the opening of the inner cavity of the hollow turbine blade is mostly of a special-shaped structure, a mold is designed by adopting modeling software according to the shape of the opening of the inner cavity, and then a resin mold is printed by adopting a 3D printing mode.
3. A method for preventing foreign matter from entering an inner cavity of a hollow turbine blade according to claim 2, wherein the mold is designed as one mold with multiple pieces.
4. The method for preventing the foreign matters from entering the inner cavity of the hollow turbine blade as claimed in claim 2, wherein in the step 3), if a gap exists between the inner cavity and the blocking block, the inner cavity is blocked and filled by using molten wax to ensure that the opening of the inner cavity is completely blocked; in order to accelerate the dissolution rate of the water-soluble wax, a 1:10 citric acid solution and adding stirring.
5. A method for preventing foreign matters from entering the inner cavity of the hollow turbine blade as claimed in claim 1 or 4, wherein the method further comprises the step 4) that the blade is subjected to working procedures including grinding, sand blasting and machining under the condition that the inner cavity is blocked by the water-soluble wax.
6. The method for preventing foreign matter from entering the inner cavity of the hollow turbine blade as claimed in claim 5, further comprising the step 5) of discharging the block: preparing a citric acid water solution, wherein the specific gravity of citric acid and water is 1:10, the leaves with the water-soluble wax are placed in a prepared aqueous solution of citric acid.
7. A method for preventing foreign matters from entering an inner cavity of a hollow turbine blade as claimed in claim 6, wherein rapid stirring is adopted for accelerating the dissolving speed of the water-soluble wax, and the stirring speed is 60-90r/min.
8. The method for preventing foreign matters from entering the inner cavity of the hollow turbine blade as claimed in claim 7, further comprising the step 6) of taking out the blade after the water-soluble wax is completely removed from the opening of the inner cavity, and drying the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211582141.XA CN115889688B (en) | 2022-12-09 | 2022-12-09 | Method for preventing foreign matters of hollow turbine blade from entering inner cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211582141.XA CN115889688B (en) | 2022-12-09 | 2022-12-09 | Method for preventing foreign matters of hollow turbine blade from entering inner cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115889688A true CN115889688A (en) | 2023-04-04 |
| CN115889688B CN115889688B (en) | 2024-03-26 |
Family
ID=86489556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211582141.XA Active CN115889688B (en) | 2022-12-09 | 2022-12-09 | Method for preventing foreign matters of hollow turbine blade from entering inner cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115889688B (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5503218A (en) * | 1994-01-12 | 1996-04-02 | Societe Nationale D'etude Et De Moteurs D'aviation "Snecma" | Method of making a shell mould from a ceramic material for a disposable pattern casting process |
| US6119761A (en) * | 1996-08-09 | 2000-09-19 | Honda Giken Kogyo Kabushiki Kaisha | Method for making a hollow cast article by the lost wax method |
| KR20110059931A (en) * | 2009-11-30 | 2011-06-08 | 박대원 | Manufacturing method of closed type impeller |
| US20140072447A1 (en) * | 2012-09-10 | 2014-03-13 | United Technologies Corporation | Ceramic and refractory metal core assembly |
| US20150096710A1 (en) * | 2013-10-08 | 2015-04-09 | Honeywell International Inc. | Process For Casting A Turbine Wheel |
| CN104772495A (en) * | 2015-03-20 | 2015-07-15 | 重庆江增船舶重工有限公司 | Processing method for preventing cutting chips from entering workpiece inner cavity during drilling and cutting processing |
| FR3023196A1 (en) * | 2014-07-04 | 2016-01-08 | Snecma | IMPROVED MOLDING PROCESS FOR TURBOMACHINE HOLLOW DUST |
| JP2017013091A (en) * | 2015-06-30 | 2017-01-19 | メカニックモデル有限会社 | Wax molding die and lost wax casting method |
| CN106392004A (en) * | 2016-11-22 | 2017-02-15 | 株洲中航动力精密铸造有限公司 | Wall thickness control method for hollow blade provided with blind hole cavity |
| KR20170079937A (en) * | 2015-12-31 | 2017-07-10 | 박찬홍 | Method of casting by 3D printing mold |
| CN106944592A (en) * | 2017-04-28 | 2017-07-14 | 鹰普航空零部件（无锡）有限公司 | Water-soluble wax and Water-soluble ceramic core combine the application in aluminium alloy model casting |
| CN107008856A (en) * | 2017-03-06 | 2017-08-04 | 株洲中航动力精密铸造有限公司 | The preparation method of precision castings formwork |
| CN107775849A (en) * | 2016-08-29 | 2018-03-09 | 宁夏瑞珲江立升三维科技有限公司 | A kind of 3D printing foundry resin mould process |
| CN109227150A (en) * | 2018-09-06 | 2019-01-18 | 河南新航航空设备科技有限公司 | A kind of method for blocking preventing workpiece lumen into foreign matter |
| CN109514339A (en) * | 2018-11-23 | 2019-03-26 | 江南工业集团有限公司 | A kind of manufacturing method of aircraft steering engine ontology |
| CN110153367A (en) * | 2019-06-21 | 2019-08-23 | 鹰普航空零部件（无锡）有限公司 | A method of removing water-soluble wax |
| CN211732549U (en) * | 2019-12-30 | 2020-10-23 | 江苏核电有限公司 | Foreign matter prevention device for manhole of container equipment |
| CN112338624A (en) * | 2020-10-30 | 2021-02-09 | 中国航发贵州黎阳航空动力有限公司 | Method for preventing large-scale complex part cutting foreign matter residue |
| CN214108696U (en) * | 2020-12-17 | 2021-09-03 | 襄阳派尔尼模具技术有限公司 | Manually-opened turbine die |
| CN113560903A (en) * | 2021-06-29 | 2021-10-29 | 西安航天发动机有限公司 | Method for preventing and controlling redundant materials in narrow gap structure |
| CN114589290A (en) * | 2022-04-11 | 2022-06-07 | 中国科学院金属研究所 | Method for forming inner cavity of high-temperature alloy hollow guide blade |
| CN115069980A (en) * | 2022-06-28 | 2022-09-20 | 河北钢研德凯科技有限公司 | Method for preparing investment casting shell by using wax removal plug and ceramic plug and application thereof |
-
2022
- 2022-12-09 CN CN202211582141.XA patent/CN115889688B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5503218A (en) * | 1994-01-12 | 1996-04-02 | Societe Nationale D'etude Et De Moteurs D'aviation "Snecma" | Method of making a shell mould from a ceramic material for a disposable pattern casting process |
| US6119761A (en) * | 1996-08-09 | 2000-09-19 | Honda Giken Kogyo Kabushiki Kaisha | Method for making a hollow cast article by the lost wax method |
| KR20110059931A (en) * | 2009-11-30 | 2011-06-08 | 박대원 | Manufacturing method of closed type impeller |
| US20140072447A1 (en) * | 2012-09-10 | 2014-03-13 | United Technologies Corporation | Ceramic and refractory metal core assembly |
| US20150096710A1 (en) * | 2013-10-08 | 2015-04-09 | Honeywell International Inc. | Process For Casting A Turbine Wheel |
| FR3023196A1 (en) * | 2014-07-04 | 2016-01-08 | Snecma | IMPROVED MOLDING PROCESS FOR TURBOMACHINE HOLLOW DUST |
| CN104772495A (en) * | 2015-03-20 | 2015-07-15 | 重庆江增船舶重工有限公司 | Processing method for preventing cutting chips from entering workpiece inner cavity during drilling and cutting processing |
| JP2017013091A (en) * | 2015-06-30 | 2017-01-19 | メカニックモデル有限会社 | Wax molding die and lost wax casting method |
| KR20170079937A (en) * | 2015-12-31 | 2017-07-10 | 박찬홍 | Method of casting by 3D printing mold |
| CN107775849A (en) * | 2016-08-29 | 2018-03-09 | 宁夏瑞珲江立升三维科技有限公司 | A kind of 3D printing foundry resin mould process |
| CN106392004A (en) * | 2016-11-22 | 2017-02-15 | 株洲中航动力精密铸造有限公司 | Wall thickness control method for hollow blade provided with blind hole cavity |
| CN107008856A (en) * | 2017-03-06 | 2017-08-04 | 株洲中航动力精密铸造有限公司 | The preparation method of precision castings formwork |
| CN106944592A (en) * | 2017-04-28 | 2017-07-14 | 鹰普航空零部件（无锡）有限公司 | Water-soluble wax and Water-soluble ceramic core combine the application in aluminium alloy model casting |
| CN109227150A (en) * | 2018-09-06 | 2019-01-18 | 河南新航航空设备科技有限公司 | A kind of method for blocking preventing workpiece lumen into foreign matter |
| CN109514339A (en) * | 2018-11-23 | 2019-03-26 | 江南工业集团有限公司 | A kind of manufacturing method of aircraft steering engine ontology |
| CN110153367A (en) * | 2019-06-21 | 2019-08-23 | 鹰普航空零部件（无锡）有限公司 | A method of removing water-soluble wax |
| CN211732549U (en) * | 2019-12-30 | 2020-10-23 | 江苏核电有限公司 | Foreign matter prevention device for manhole of container equipment |
| CN112338624A (en) * | 2020-10-30 | 2021-02-09 | 中国航发贵州黎阳航空动力有限公司 | Method for preventing large-scale complex part cutting foreign matter residue |
| CN214108696U (en) * | 2020-12-17 | 2021-09-03 | 襄阳派尔尼模具技术有限公司 | Manually-opened turbine die |
| CN113560903A (en) * | 2021-06-29 | 2021-10-29 | 西安航天发动机有限公司 | Method for preventing and controlling redundant materials in narrow gap structure |
| CN114589290A (en) * | 2022-04-11 | 2022-06-07 | 中国科学院金属研究所 | Method for forming inner cavity of high-temperature alloy hollow guide blade |
| CN115069980A (en) * | 2022-06-28 | 2022-09-20 | 河北钢研德凯科技有限公司 | Method for preparing investment casting shell by using wax removal plug and ceramic plug and application thereof |
Non-Patent Citations (3)
| Title |
|---|
| 丁盼等: "某型燃机双联实心导向叶片精密铸造过程尺寸控制", 特种铸造及有色合金, vol. 42, no. 4, pages 525 - 528 * |
| 邵中魁;姜耀林;何朝辉;郑儒宏;: "基于3D打印的离心泵叶轮压蜡模具快速制造工艺研究", 机电工程, no. 04, pages 434 - 437 * |
| 鲁中良;周江平;杨东升;荆慧;李涤尘;: "基于3D打印技术的预研涡轮叶片精铸蜡型快速制造方法", 航空学报, no. 02, pages 651 - 660 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115889688B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2760927T3 (en) | Aggregate-based chucks for the production of composite material parts and production methods for composite material parts | |
| CN107309406B (en) | Casting method adopting combined 3D printing shell mold | |
| EP0466419B1 (en) | Core removal from molded products | |
| CN103464680B (en) | The integrated sand mould structure of helical-lobe compressor casing and manufacture using method thereof | |
| US4556528A (en) | Mold and method for casting of fragile and complex shapes | |
| CN202984579U (en) | Cylinder cover casting die | |
| CN203459625U (en) | Sand mould structure with integrally-formed screw compressor shell | |
| CN110722103A (en) | Precision casting process of high-rotation-speed mixing head | |
| CN105017757A (en) | Method and product used for preparing friable lids | |
| CN115889688B (en) | Method for preventing foreign matters of hollow turbine blade from entering inner cavity | |
| CN114180945A (en) | Additive manufacturing method for ceramic core-type shell integrated piece | |
| CN116653216A (en) | Key injection mold and injection molding method thereof | |
| CN110586869A (en) | Investment casting process of flange ball plug valve body | |
| CN110586865B (en) | Universal casting method for small and medium-sized steel castings | |
| CN106001491A (en) | Die casting method of die castings | |
| CN114042862A (en) | Novel method for manufacturing medium-wax pattern in lost wax casting | |
| CN103639362B (en) | A kind of non air exit hole resin sand full mold casting method | |
| CN103075274B (en) | Air inlet mixer and casting process thereof | |
| CN105492143A (en) | Double casting method and apparatus | |
| US9278388B2 (en) | Process for the manufacturing of a thin-walled article in metal | |
| CN108202128A (en) | A kind of hard seal gate valve valve seal ring whole embedding method | |
| KR102540789B1 (en) | Method of Manufacturing Vehicle Parts using Die-casting Method | |
| CN217070661U (en) | Hydroelectric equipment stator casting system | |
| CN217290292U (en) | Investment casting mould exhaust apparatus | |
| CN210590382U (en) | PEK knee part high-temperature die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |