CN106513636A - Hollow through hole fired mold shell structure for high-temperature resisting alloy vacuum suction casing technique - Google Patents
Hollow through hole fired mold shell structure for high-temperature resisting alloy vacuum suction casing technique Download PDFInfo
- Publication number
- CN106513636A CN106513636A CN201611170566.4A CN201611170566A CN106513636A CN 106513636 A CN106513636 A CN 106513636A CN 201611170566 A CN201611170566 A CN 201611170566A CN 106513636 A CN106513636 A CN 106513636A
- Authority
- CN
- China
- Prior art keywords
- hole
- hollow
- formwork
- hollow via
- running channel
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 45
- 239000000956 alloy Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims description 13
- 238000009415 formwork Methods 0.000 claims description 75
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000005495 investment casting Methods 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 238000013022 venting Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a hollow through hole fired mold shell structure. The hollow through hole fired mold shell structure is characterized in that a main body of the mold shell structure is of a hollow through hole structure, and the upper portion of the hollow through hole is provided with a platform protruding outwards and venting holes; a base is arranged on the lower portion of the hollow through hole; reinforcing connecting pieces are arranged between the base and the outer wall of the hollow through hole; mold shell castings are evenly distributed on the outer wall of the hollow through hole; the mold shell castings are connected with the hollow through hole through a pouring gate system; and the pouring gate system comprises an elbow pouring gate, a mold filling pouring gate and a feeding pouring gate. By arranging the venting holes and all the components again, the hollow through hole fired mold shell structure has greater functional characteristics. By applying the hollow through hole structure and the reinforcing structures, the effects that an alloy solution ascends in the mold filling stage and the alloy solution in the hollow through hole flows back rapidly in the pressure relief stage are guaranteed, and the hollow through hole fired mold shell structure has outstanding beneficial effects.
Description
Technical field
It is the present invention relates to a kind of hollow via-hole fusible pattern formwork structure, more particularly to a kind of for high-temperature alloy suction pouring
The hollow via-hole fusible pattern formwork structure of technique.
Background technology
Suction pouring of the present invention belongs to Special Processes of Metal Castings technique, is a kind of advanced foundry engieering.Because of its liquid metals
Utilization rate height, foundry goods precision height, quality height, energy saving, low cost and other advantages, are widely used in merchant in developed country
In many important precision casting manufactures such as tool, mechanical part, turbine blade, guided missile wing.The technology 1975 is by the U.S.
Hitchiner companies obtain patent, and realize core technology block.At present, suction pouring is mainly used in aluminum conjunction in China
The hot investment casting of the low-temperature alloys such as gold, is rarely applied to the hot investment casting of high-temperature alloy.
Formwork for suction pouring had both required that higher intensity also required that certain breathability, so just can guarantee that and fills type
Stage smoothly draws alloy solution, and formwork full of Stability Analysis of Structures after alloy solution.But the intensity of totally-enclosed formwork structure and
Breathability is a pair conflicting performances, and this results in most of formwork structure in the market and is difficult to be adapted to high temperature resistant conjunction
The casting technique of golden suction pouring, but it is really more and more vigorous for the demand of this precision casting in the market, due to existing
There is formwork up to standard, cause yield not high, but if produced by force easily there are various perils.
The content of the invention
It is an object of the invention to provide a kind of hollow via-hole fusible pattern formwork structure, by formwork structure is optimized, and
Using the existing part of other parts, arranged by the mechanism again of passage and each part so as to be provided with more preferably function special
Point；Further, for the application of the hollow via-hole structure and reinforcement structure, it is ensured that fill type stage alloy solution and rise and let out
The pressure stage is hollow by interior alloy solution quick backflow, with prominent beneficial effect.
To achieve these goals, the technical scheme is that：A kind of hollow via-hole fusible pattern formwork structure, its feature exist
In：Described formwork structure main body is hollow via-hole structure, and the top of hollow via-hole is provided with the platform and passage of outwardly convex；
The bottom of hollow via-hole is provided between the outer wall of pedestal, pedestal and hollow via-hole and is provided with reinforcement connector；The outer wall of hollow via-hole
On be evenly equipped with formwork foundry goods, described formwork foundry goods is connected by runner system by between with hollow, described runner system
Including elbow running channel, connection running channel and unhurried current running channel.
Preferably, it is provided with passage at the top of described evagination platform, the groove-like of described passage semicircular in shape is led to
The open end of pore is maintained an equal level with evagination platform surface, and passage runs through whole evagination platform and is connected with inside hollow via-hole.
Preferably, described elbow running channel is arranged at the top of formwork foundry goods, one end and the hollow via-hole of elbow running channel
Inside is connected, and the other end of elbow running channel is connected with formwork foundry goods by filling type running channel and feeding running channel, elbow running channel
Difference in height is 3 10cm；The described type running channel that fills is curved channel, is directly connected with the inside of formwork foundry goods, described benefit
Contracting running channel is arranged at the side of formwork foundry goods.
Another technical scheme, a kind of using method of hollow via-hole fusible pattern formwork structure, it is characterised in that：Formwork structure
Roasting carries out the hot investment casting of the small-sized foundry goods of high-temperature alloy in putting into suction pouring equipment to 500-1200 DEG C of temperature.Its
In, described high-temperature alloy refers to rustless steel, steel alloy, titanium alloy or titanium-aluminium alloy.
Hollow via-hole fusible pattern formwork structure of the present invention is a kind of mould of suitable high-temperature alloy process for suction casting
Shell structure so as to be applied to the hot investment casting of the small-sized foundry goods of high temperature alloy.Wherein, the design of hollow via-hole structure ensure that alloy
The rising falling of solution and gas discharge so that fills type stage alloy solution can smoothly rise pass through hollow with the pressure release stage
Interior alloy solution is flowed back rapidly.The upper end of formwork arranges platform and the convenient compression formwork of passage and aerofluxuss；Formwork foundry goods portion
Point connect by elbow running channel and hollow via-hole, complete to fill connecting for type running channel and feeding running channel, be conducive to Filling Processes of Castings and benefit
Contracting.It is applied in high-temperature alloy process for suction casting by the formwork of this structure, safety coefficient is high, cast structure is fine and close,
Crystal grain is tiny, and shrinkage porosity defect of contraction cavity is relatively low, obtains material rate and is likely to reach more than 90%, and saves the casting energy more than 80%.
Description of the drawings
Fig. 1 is the structural representation of one embodiment of the present invention.
Fig. 2 is the structural representation that aluminium alloy of the present invention flows into elbow running channel from hollow through-hole structure.
Cross-sectional views of the Fig. 3 for one embodiment of the invention.
Fig. 4 pressure change curves in formwork structure when process for suction casting is tested for the present invention.
Fig. 5 is cast 25 times of metallographs of high temperature resistant stainless steel foundry goods by the formwork structure of the application present invention.
Reference：
1- formwork structures, 2- penetrate reinforcement connector, and 3- evagination platforms, 4- formwork foundry goods, 5- passages, 6- base stations, 7- are hollow logical
Hole, 8- elbow running channels, 9- feeding running channels.
Specific embodiment
With reference to Fig. 1, a kind of hollow via-hole fusible pattern formwork structure main body of the present invention is hollow via-hole structure, hollow logical
The top in hole is provided with the platform and passage of outwardly convex, and platform can compress formwork structure, and passage then carries out effective aerofluxuss；
The bottom of hollow via-hole is provided between the outer wall of pedestal, pedestal and hollow via-hole and is provided with reinforcement connector, is conducive to improving formwork
The intensity of structure；Further, it is evenly equipped with formwork foundry goods on the outer wall of hollow via-hole, described formwork foundry goods is with hollow by it
Between be connected by runner system, described runner system includes elbow running channel, fills type running channel and feeding running channel, and above-mentioned running channel sets
Meter, is conducive to filling type and feeding.
Described pedestal has column and the base station being located on column to constitute, the diameter with diameter greater than evagination platform of base station,
Base station is provided with reinforcement connector；The rectangular triangle row of described reinforcement connector, strengthens connector and sets up separately in hollow via-hole
Outer wall surrounding.Here the purpose for being used in formwork bottom reinforcement structure design is to improve form strength, it is ensured that formwork exists
High temperature and full of will not still rupture in the case of alloy solution, improve the stability and service life of formwork.
In one embodiment, the main body of formwork structure is hollow via-hole structure, and the purpose of hollow via-hole structure design is
For the rising falling and gas discharge of alloy solution.The smooth rising of type stage alloy solution is filled in guarantee and the pressure release stage is hollow
Flowed back by interior alloy solution rapidly.Evagination platform is provided with the top of formwork structure, is provided with the top of described evagination platform
Passage, the groove-like of described passage semicircular in shape, the groove structure of semicircle orifice then ensure that the peristome of passage is little,
Internal cavities are big, be conducive to the crushing failure at high speed of air go out from, but cause alloy solution to be difficult to overflow, the open end of passage with it is outer
Convex platform surface maintains an equal level, and passage runs through whole evagination platform and is connected with inside hollow via-hole.Hollow via-hole structural base
For alloy liquid flow inlet, top is alloy fluid outlet, and described passage is provided with 3-5, and described passage is uniformly embedded
In evagination platform, passage with diameter greater than equal to evagination platform thickness, here between the bottom of passage and horizontal plane
There is an angle, angle angle is 5-1 degree, is conducive to the quick outflow of hot-air, and ensures that aluminium alloy does not spill over.
In one embodiment, described elbow running channel is arranged at the top of formwork foundry goods, and one end of elbow running channel is with
The inside of empty through hole is connected, and the other end of elbow running channel is connected with formwork foundry goods by filling type running channel and feeding running channel, curved
The difference in height of head running channel is 3 10cm；The described type running channel that fills is curved channel, is directly connected with the inside of formwork foundry goods,
Described feeding running channel is arranged at the side of formwork foundry goods, and described convex structure of the feeding running channel in evagination, the feeding are poured
Road is located at the underface for filling type running channel, after aluminium alloy flows back, as the aluminium alloy in elbow running channel is easy in hollow via-hole
Aluminium alloy disconnects, and feeding running channel can cause feeding a casting and improve precision casting quality.Further, described elbow running channel its
An inclined angle is formed between one end bottom surface being connected with hollow via-hole and horizontal plane, and described angle of inclination is 3-5 degree.
The setting of elbow running channel then ensures that the alloy solution for flowing into foundry goods will not flow back with the alloy solution in hollow via-hole.
In one embodiment, the wax-pattern structure that the formwork for designing the changes into line that puts into production carries out penetrating wax, group tree, system
The shell processed of shell, dewaxing, roasting, wherein formwork adopt 6 layers of hanging sand process for making shell, with sand material include zircon sand, mullite, magnesia,
One or more mixing compositions in silica sand；Wherein formwork sintering temperature is 500-1200 DEG C of arbitrary temperature, by roasting mould
Shell loads in suction pouring equipment so as to which lower end is coordinated with stalk, and upper end is coordinated with compressing member is in formwork and stalk
Tight engagement is so as to carrying out the hot investment casting of the small-sized foundry goods of high-temperature alloy.High-temperature alloy described here refers to stainless
Steel, steel alloy, titanium alloy or titanium-aluminium alloy.
In a concrete application embodiment, first, formwork structure carries out roasting in 1100 DEG C of degree, then will be roasting
Formwork load in suction pouring equipment so as to lower end and stalk coordinate, and upper end is coordinated with compressing member makes formwork and stalk
In tight engagement.Fill the type stage, the rapid aerofluxuss of hollow via-hole structure make high temperature alloy solution rise and fill type in outstanding
The foundry goods of extension state.Bottom reinforcement ensures stable full of formwork structure after alloy solution.Under pressure release state in hollow via-hole
Alloy solution is flowed back rapidly, but the alloy solution in suspension status foundry goods will be unable to backflow.Elbow dealings will provide feeding
And improve casting quality.The high-temperature alloy cast structure produced by the formwork of this kind of structure is fine and close, and crystal grain is tiny, shrinkage cavity
Shrinkage defect is relatively low, obtains material rate and is likely to reach more than 90%, and saves the casting energy more than 80%.Described hollow via-hole structure
The purpose of design is the rising falling and gas discharge for alloy solution.Guarantee fill type stage alloy solution smooth rising and
The pressure release stage is hollow to be flowed back by interior alloy solution rapidly.The purpose of described formwork bottom reinforcement structure design be in order to
Improve form strength.Ensure that formwork will not be still ruptured in the case of being full of alloy solution.The platform of described formwork upper end and
The purpose of vent hole structure design is to compress formwork and aerofluxuss respectively.Ensure to be fitted close between formwork and stalk and
Formwork aerofluxuss.Described formwork casting portion is for feeding by the purpose of design of elbow running channel and hollow via-hole attachment structure
And improve precision casting quality.Ensure that the alloy solution for flowing into foundry goods will not flow back with the alloy solution in hollow via-hole.
Above the specific embodiment of the present invention is described in detail, but which has been only used as example, the present invention has been not intended to limit
In particular embodiments described above.To those skilled in the art, any equivalent modifications carried out by the practicality and replace
In generation, is also all among scope of the invention.Therefore, the equalization made without departing from the spirit and scope of the invention is converted and is repaiied
Change, should all cover within the scope of the invention.
Claims (8)
1. a kind of hollow via-hole fusible pattern formwork structure, it is characterised in that：Described formwork structure main body is hollow via-hole structure, in
The top of empty through hole is provided with the platform and passage of outwardly convex；The bottom of hollow via-hole is provided with pedestal, pedestal and hollow via-hole
Outer wall between be provided with reinforcement connector；
Formwork foundry goods is evenly equipped with the outer wall of hollow via-hole, and described formwork foundry goods passes through runner system phase by between with hollow
Even, described runner system includes elbow running channel, fills type running channel and feeding running channel.
2. a kind of hollow via-hole fusible pattern formwork structure according to claim 1, it is characterised in that：Described evagination platform
Top is provided with passage, and the groove-like of described passage semicircular in shape, open end and the evagination platform surface of passage maintain an equal level,
Passage runs through whole evagination platform and is connected with inside hollow via-hole.
3. a kind of hollow via-hole fusible pattern formwork structure according to claim 1, it is characterised in that：Described pedestal has column
Constitute with the base station being located on column, the diameter with diameter greater than evagination platform of base station, base station are provided with reinforcement connector；
The rectangular triangle row of described reinforcement connector, strengthens connector and sets up the outer wall surrounding in hollow via-hole separately.
4. a kind of hollow via-hole fusible pattern formwork structure according to claim 1, it is characterised in that：Described elbow running channel sets
The top of formwork foundry goods is placed in, one end of elbow running channel is connected with the inside of hollow via-hole, and the other end of elbow running channel passes through
Fill type running channel and feeding running channel is connected with formwork foundry goods, the difference in height of elbow running channel is 3 10cm；
The described type running channel that fills is curved channel, is directly connected with the inside of formwork foundry goods, and described feeding running channel is arranged at
The side of formwork foundry goods.
5. a kind of hollow via-hole fusible pattern formwork structure according to claim 1, it is characterised in that：Described elbow running channel its
An inclined angle is formed between one end bottom surface being connected with hollow via-hole and horizontal plane, and described angle of inclination is 3-5 degree.
6. a kind of hollow via-hole fusible pattern formwork structure according to claim 1, it is characterised in that：Described hollow via-hole knot
Structure bottom is alloy liquid flow inlet, and top is alloy fluid outlet, and described passage is provided with 3-5, and described passage is equal
It is even to be embedded in evagination platform, passage with diameter greater than equal to evagination platform thickness.
7. the using method of a kind of hollow via-hole fusible pattern formwork structure according to claim 1, it is characterised in that：Formwork is tied
Structure roasting carries out the hot investment casting of the small-sized foundry goods of high-temperature alloy in putting into suction pouring equipment to 500-1200 DEG C of temperature.
8. the using method of a kind of hollow via-hole fusible pattern formwork structure according to claim 7, it is characterised in that：Described
High-temperature alloy refers to rustless steel, steel alloy, titanium alloy or titanium-aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170566.4A CN106513636B (en) | 2016-12-16 | 2016-12-16 | Hollow via-hole fusible pattern formwork structure for high-temperature alloy process for suction casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170566.4A CN106513636B (en) | 2016-12-16 | 2016-12-16 | Hollow via-hole fusible pattern formwork structure for high-temperature alloy process for suction casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106513636A true CN106513636A (en) | 2017-03-22 |
| CN106513636B CN106513636B (en) | 2019-04-23 |
Family
ID=58339519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611170566.4A Active CN106513636B (en) | 2016-12-16 | 2016-12-16 | Hollow via-hole fusible pattern formwork structure for high-temperature alloy process for suction casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN106513636B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097926A (en) * | 2018-01-02 | 2018-06-01 | 上海华培动力科技股份有限公司 | A kind of wax-pattern structure for suction pouring |
| CN109719277A (en) * | 2017-10-30 | 2019-05-07 | 科华控股股份有限公司 | The anti-gravity feeding shell structure of heat resisting steel volute process for suction casting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109719277A (en) * | 2017-10-30 | 2019-05-07 | 科华控股股份有限公司 | The anti-gravity feeding shell structure of heat resisting steel volute process for suction casting |
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| CN108097926B (en) * | 2018-01-02 | 2024-03-01 | 上海华培数能科技(集团)股份有限公司 | Wax mould structure for vacuum suction casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106513636B (en) | 2019-04-23 |
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