CN107877807A - A kind of directional solidification casting crystallization chassis manufacture method - Google Patents
A kind of directional solidification casting crystallization chassis manufacture method Download PDFInfo
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- CN107877807A CN107877807A CN201711107910.XA CN201711107910A CN107877807A CN 107877807 A CN107877807 A CN 107877807A CN 201711107910 A CN201711107910 A CN 201711107910A CN 107877807 A CN107877807 A CN 107877807A
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- Prior art keywords
- chassis
- crystallization
- wax
- crystallization chassis
- directional solidification
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
-
- 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
- C30B28/00—Production of homogeneous polycrystalline material with defined structure
- C30B28/04—Production of homogeneous polycrystalline material with defined structure from liquids
- C30B28/06—Production of homogeneous polycrystalline material with defined structure from liquids by normal freezing or freezing under temperature gradient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76561—Time duration
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of directional solidification casting crystallization chassis manufacture method, comprise the following steps：1) design crystallization chassis：According to the crystallization chassis needed for leaf blade size and directional solidification furnace water cooled copper plate size design；2) manufacture crystallization chassis：Wax mold processed is sent according to crystallization chassis design figure, wax crystallization chassis is suppressed on wax injector；Or according to crystallization chassis design figure customization plastics crystallization chassis.A kind of directional solidification casting provided by the invention crystallization chassis manufacture method, this method is using wax or meltable plastic shaping essence casting process crystallization chassis, remove built-in aluminium sheet, increase anti-deformation and subregion rib in wax or plastics crystallization chassis, and blade Combination Welding position and initiating terminal shape at mark, it is easy to accurate group weldering.The inventive method does not have to aluminium sheet, is fastened without nut, reduces process links, reduces production cost and period, improves module and product quality.And convenient operation, be advantageous to process implementing.
Description
Technical field
The invention belongs to melted module precise casting technology field, and in particular to a kind of directional solidification casting is manufactured with crystallization chassis
Method.
Background technology
At present, rapid solidification method is directional solidification cylindrulite and a kind of the most commonly used engineering production method of single crystal casting.
There are planarity requirements on this method crystallization chassis used, and manufacture method is mostly aluminium sheet+stencil plate, is that aluminium is pre-placed in Wax mold
Then plate presses wax so that aluminium sheet is wrapped in wax-pattern.Ensure the flatness on crystallization chassis, aluminium sheet and support stick one with aluminium sheet
As using screw threads for fastening connect.But there are following problems with the method：
1) aluminium sheet and intermediate supports rod couple fastening problems.Aluminium sheet is connected with support stick using screw threads for fastening, but is tied
Brilliant chassis area is larger, and for diameter at least more than Φ 200mm, support stick diameter is mostly 12~Φ of Φ 20mm.Crystallize chassis one side
It is simultaneously aluminium sheet for wax-pattern, clamp nut can be only installed at aluminium sheet side, fastening shakiness often occurs, be turned in formwork movement, shell processed
Rocked during turning, cause module to be broken.
2) aluminium sheet and nut remove problem after the completion of shell processed.After completion shell, aluminium sheet, support stick and clamp nut all can be by
Wrap up in formwork.Method 1 is removed before dewaxing, and difficult point is that the screw thread on support stick has many places remnants formworks, and nut can not
Rotation is exited.Aluminium sheet is wrapped in wax-pattern and formwork, the formwork and wax-pattern at aluminium sheet edge can only be broken into two with one's hands and destroyed, can just take
Go out, operation difficulty is larger and to frequently result in formwork edge gap uneven.Method two is place to go nut and aluminium sheet after dewaxing,
Aluminium sheet can influence dewaxing effect, extend the dewaxing time.
The content of the invention
It is an object of the invention to provide a kind of directional solidification casting crystallization chassis manufacture method, the manufacture method does not have to aluminium
Plate, fastened without nut, convenient operation, be advantageous to process implementing.
The present invention adopts the following technical scheme that realization：
A kind of directional solidification casting crystallization chassis manufacture method, comprises the following steps：
1) design crystallization chassis：
According to the crystallization chassis needed for leaf blade size and directional solidification furnace water cooled copper plate size design；
2) manufacture crystallization chassis：
Wax mold processed is sent according to crystallization chassis design figure, wax crystallization chassis is suppressed on wax injector；
Or according to crystallization chassis design figure customization plastics crystallization chassis.
Of the invention further improve is, in step 1), the thickness on the crystallization chassis of design is 8~12mm, diameter ratio
Small 5~the 10mm of directional solidification furnace water cooled copper plate diameter.
Of the invention further improve be, between the blade being distributed on crystallization chassis with semicircular rib subregion with
Anti-deformation, rib size are 3~5mm of Φ, and position extends to outer rim from the chassis center of circle.
Further improve of the invention is that the pressing parameter on wax crystallization chassis is：65 DEG C~75 DEG C of wax material temperature, note
Injection pressure is 20bar~40bar, and the dwell time is 40s~60s.
Further improve of the invention is that the pressing parameter on wax crystallization chassis is：Wax material temperature 70 C, injection pressure
For 30bar, dwell time 50s.
Further improve of the invention is that the injection parameterses on plastics crystallization chassis are：170 DEG C~200 DEG C of barrel temperature,
Injection pressure is 60Mpa~100Mpa, and the dwell time is 15s~60s.
Further improve of the invention is that the injection parameterses on plastics crystallization chassis are：185 DEG C of barrel temperature, injection pressure
Power is 80Mpa, dwell time 40s.
The present invention has the advantage that：
A kind of directional solidification casting provided by the invention crystallization chassis manufacture method, this method is to use wax or meltable
Plastic shaping essence casting process crystallization chassis, removes built-in aluminium sheet, increases anti-deformation in wax or plastics crystallization chassis and divides
Area's rib, and blade Combination Welding position and initiating terminal shape at mark, it is easy to accurate group weldering.The inventive method does not have to aluminium sheet,
Fastened without nut, reduce process links, reduced production cost and period, improve module and product quality.And convenient behaviour
Make, be advantageous to process implementing.
Brief description of the drawings
Fig. 1 is the front view for crystallizing chassis.
Fig. 2 is the side view for crystallizing chassis.
Fig. 3 is Fig. 1 A-A to sectional view.
Wherein, a diameter of Φ D, thickness d, rib radius are r, and the number of blade is every group 6.
In figure：1- crystallizes chassis, 2- ribs, 3- blades, 4- feed trumpets.
Embodiment
The present invention is made further instructions below in conjunction with drawings and examples.
A kind of directional solidification casting provided by the invention crystallization chassis manufacture method, comprises the following steps：
1) design crystallization chassis：
As shown in Figure 1 to Figure 3, the crystallization chassis according to needed for leaf blade size and directional solidification furnace water cooled copper plate size design
1；The thickness on design crystallization chassis 1 is 8~12mm, and diameter is smaller 5~10mm than directional solidification furnace water cooled copper plate diameter.At crystallization bottom
With the semicircular subregion anti-deformation of rib 2 between the blade 3 being distributed on disk 1, the size of rib 2 is 3~5mm of Φ, and position is from crystallization
The center of circle on chassis 1 extends to outer rim, as the radius identified on drawing.Crystallization will illustrate feed trumpet 4 and each leaf on chassis 1
The shape of piece 3 and position, the shape for reserving profile-followed initiating terminal of directional solidification cylindrulite and position, directional solidification monocrystalline are reserved
Go out crystal selector shape and position, to facilitate blade 3 crystallizing the One On The Chassis Combination Welding.
2) manufacture crystallization chassis：
Wax mold processed is sent according to crystallization chassis design figure, wax crystallization chassis is suppressed on wax injector；Crystallize chassis with
Feed trumpet connection is using wax material welding fastening among module, and prior art is using threaded connection.
Or according to crystallization chassis design figure customization plastics crystallization chassis, material selection is meltable, pollution-free, at room temperature
On-deformable plastics.In use, can removes crystallization chassis by the way of directly fusing removes.
Wherein, the pressing parameter on wax crystallization chassis is：65 DEG C~75 DEG C of wax material temperature, injection pressure be 20bar~
40bar, dwell time are 40s~60s.It is preferred that when, wax material temperature 70 C, injection pressure 30bar, dwell time 50s.
Plastics crystallization chassis injection parameterses be：170 DEG C~200 DEG C of barrel temperature, injection pressure be 60Mpa~
100Mpa, dwell time are 15s~60s.It is preferred that when, 185 DEG C, injection pressure 80Mpa, dwell time 40s of barrel temperature.
Application method：
1) blade wax mould and running gate system are suppressed；
2) crystallization chassis is prepared；
3) blade, running gate system, crystallization chassis and feed trumpet are welded together according to blade constitutional diagram；
4) module paint case making；
5) module dewaxes, and plastics or wax crystallization chassis fusing remove, and form blade formwork chassis and are used for cast；
6) according to precision castings process flowing water, the processes such as blade cast, shelling, cutting polishing, heat treatment, inspection are carried out.
Embodiment 1：Certain machine high-pressure turbine working blade
1) set according to orientation stove aqueous cold plate size (Φ 400mm), per the number (15) of module high-pressure turbine working blade
The crystallization chassis (Φ D=380mm, rib r=2.5mm, thickness d=12mm) that meter is adapted therewith；
2) wax is made according to design drawing or plastics crystallizes chassis；
3) blade and running gate system wax-pattern are prepared；
4) blade, running gate system, crystallization chassis and feed trumpet are welded together according to blade constitutional diagram；
5) module paint case making；
6) module dewaxes, while melts and remove plastics or wax crystallization chassis, forms blade formwork chassis and is used for cast；
7) according to precision castings process flowing water, the processes such as blade cast, shelling, cutting polishing, heat treatment, inspection are carried out.
Embodiment 2：Certain machine high-pressure turbine guide vane
1) according to the crystallization chassis size (Φ 200mm) of module, the number (5 per module machine high-pressure turbine guide vane
Part) and the crystallization chassis (Φ D=190mm, r=1.5mm, thickness d=8mm) that is adapted therewith of size design；
2) wax is made according to design drawing or plastics crystallizes chassis；
3) blade and running gate system wax-pattern are prepared；
4) blade, running gate system, crystallization chassis and feed trumpet are welded together according to blade constitutional diagram；
5) module paint case making；
6) module dewaxes, while melts and remove plastics or wax crystallization chassis, forms blade formwork chassis and is used for cast；
7) according to precision castings process flowing water, the processes such as blade cast, shelling, cutting polishing, heat treatment, inspection are carried out.
Claims (7)
1. a kind of directional solidification casting crystallization chassis manufacture method, it is characterised in that comprise the following steps：
1) design crystallization chassis：
According to the crystallization chassis needed for leaf blade size and directional solidification furnace water cooled copper plate size design；
2) manufacture crystallization chassis：
Wax mold processed is sent according to crystallization chassis design figure, wax crystallization chassis is suppressed on wax injector；
Or according to crystallization chassis design figure customization plastics crystallization chassis.
A kind of 2. directional solidification casting according to claim 1 crystallization chassis manufacture method, it is characterised in that step 1)
In, the thickness on the crystallization chassis of design is 8~12mm, and diameter is smaller 5~10mm than directional solidification furnace water cooled copper plate diameter.
3. a kind of directional solidification casting according to claim 2 crystallization chassis manufacture method, it is characterised in that crystallizing
With semicircular rib subregion with anti-deformation between the blade being distributed on chassis, rib size is 3~5mm of Φ, and position is from chassis
The center of circle extends to outer rim.
A kind of 4. directional solidification casting according to claim 1 crystallization chassis manufacture method, it is characterised in that wax knot
The pressing parameter on brilliant chassis is：65 DEG C~75 DEG C of wax material temperature, injection pressure are 20bar~40bar, the dwell time be 40s~
60s。
A kind of 5. directional solidification casting according to claim 4 crystallization chassis manufacture method, it is characterised in that wax knot
The pressing parameter on brilliant chassis is：Wax material temperature 70 C, injection pressure 30bar, dwell time 50s.
A kind of 6. directional solidification casting according to claim 1 crystallization chassis manufacture method, it is characterised in that plastics knot
The injection parameterses on brilliant chassis are：170 DEG C~200 DEG C of barrel temperature, injection pressure are 60Mpa~100Mpa, dwell time 15s
~60s.
A kind of 7. directional solidification casting according to claim 6 crystallization chassis manufacture method, it is characterised in that plastics knot
The injection parameterses on brilliant chassis are：185 DEG C, injection pressure 80Mpa, dwell time 40s of barrel temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711107910.XA CN107877807A (en) | 2017-11-10 | 2017-11-10 | A kind of directional solidification casting crystallization chassis manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711107910.XA CN107877807A (en) | 2017-11-10 | 2017-11-10 | A kind of directional solidification casting crystallization chassis manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107877807A true CN107877807A (en) | 2018-04-06 |
Family
ID=61780232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711107910.XA Pending CN107877807A (en) | 2017-11-10 | 2017-11-10 | A kind of directional solidification casting crystallization chassis manufacture method |
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| CN (1) | CN107877807A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113926988A (en) * | 2021-09-09 | 2022-01-14 | 中国航发南方工业有限公司 | Bottom plate wax mold structure and forming method of directional solidification shell bottom plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861999A (en) * | 2014-03-26 | 2014-06-18 | 东方电气集团东方汽轮机有限公司 | Method for improving bottom deformation of multi-cavity ceramic die shell in directional solidification process |
| CN104353785A (en) * | 2014-10-31 | 2015-02-18 | 沈阳黎明航空发动机(集团)有限责任公司 | Inlaid base disc for directionally freezing blade wax mold combination and preparing method thereof |
| CN204247909U (en) * | 2014-10-31 | 2015-04-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Inserted chassis is used in a kind of directional solidification blade wax-pattern combination |
-
2017
- 2017-11-10 CN CN201711107910.XA patent/CN107877807A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861999A (en) * | 2014-03-26 | 2014-06-18 | 东方电气集团东方汽轮机有限公司 | Method for improving bottom deformation of multi-cavity ceramic die shell in directional solidification process |
| CN104353785A (en) * | 2014-10-31 | 2015-02-18 | 沈阳黎明航空发动机(集团)有限责任公司 | Inlaid base disc for directionally freezing blade wax mold combination and preparing method thereof |
| CN204247909U (en) * | 2014-10-31 | 2015-04-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Inserted chassis is used in a kind of directional solidification blade wax-pattern combination |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113926988A (en) * | 2021-09-09 | 2022-01-14 | 中国航发南方工业有限公司 | Bottom plate wax mold structure and forming method of directional solidification shell bottom plate |
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| PB01 | Publication | ||
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Application publication date: 20180406 |