CN103861998A - Investment casting method - Google Patents
Investment casting method Download PDFInfo
- Publication number
- CN103861998A CN103861998A CN201410082213.3A CN201410082213A CN103861998A CN 103861998 A CN103861998 A CN 103861998A CN 201410082213 A CN201410082213 A CN 201410082213A CN 103861998 A CN103861998 A CN 103861998A
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- CN
- China
- Prior art keywords
- investment casting
- steps
- casting method
- fusible pattern
- mould material
- 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.)
- Pending
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005495 investment casting Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000001293 FEMA 3089 Substances 0.000 claims abstract description 4
- 239000011819 refractory material Substances 0.000 claims description 12
- 230000007547 defect Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 5
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- JXTHNDFMNIQAHM-UHFFFAOYSA-N dichloroacetic acid Chemical compound OC(=O)C(Cl)Cl JXTHNDFMNIQAHM-UHFFFAOYSA-N 0.000 claims description 5
- 229960005215 dichloroacetic acid Drugs 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical class O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 21
- 238000001035 drying Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010422 painting Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical class [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses an investment casting method. The investment casting method mainly comprises the following steps: configuring pattern materials; pressing the pattern materials: painting a compression surface with a layer of turpentine oil and pouring the mixed pattern materials obtained in the step A so as to press the pattern materials; drying a fired mold; combining the fired mold with a gating system so as to manufacture a shell; roasting the shell. According to the method provided by the invention, a prepared fired mold product is high in dimensional accuracy, small in number of casting flaws and reliable in product quality, castings obtained through pouring by utilizing the method are precious in sizes and high in surface quality, and the method is even suitable for casting fired molds and castings which are complicated in casting shapes, resistant to high temperature and not easy to process. According to the method provided by the invention, the production cycle is shortened, the production efficiency is improved, the production cost is reduced, and the method has the guiding significance on practical production.
Description
Technical field
?the present invention relates to cast field, specifically a kind of investment casting method.
Background technology
In traditional investment casting method process, shrinkage cavity, the rarefaction defect of foundry goods are comparatively common, particularly light-alloy is as defects such as aluminium, the easy generation of the thick large part of magnesium precision-investment casting medium casting are loosened, shrinkage cavities, casting qualified rate is low, the air-cooled foundry goods that easily makes of drying produces air-breathing oxidizing fire, occurs secondary casting flaw.For this reason, some foundry enterprise utilizes cooling-part heat conduction to solve shrinkage cavity, rarefaction defect, while utilizing cooling-part heat conduction, be generally just cooling-part to be arranged on wax-pattern in shell process processed, the shortcoming of this mode is mainly that cooling-part will need stand high-temperature roasting along with shell process, easily cause the oxidation of cooling-part outer surface and internal structure change, reduce cooling effect, affect cast article quality.
Product precision, complexity that precision-investment casting obtains, close to part final form, can not process or seldom just directly use of processing, is a kind of advanced technologies of near-net-shape, is an excellent technology in casting industry, and its application is very extensive.It is not only the casting for the various alloys of all kinds, and the casting dimension precision of producing, surface quality are higher than other casting method, even other casting method be difficult to cast complexity, high temperature resistant, the foundry goods that is not easy to processing, all can adopt model casting casting.
Along with model casting precision castings is towards the development of integration, thin-walled property and maximization, the compacting of wax-pattern and the design of die mould have run into new challenge, the mobile non-Newton fluid characteristic that presents of moltening mold castings mould material, the mould material of different compositions has different rheological behaviors; Same mould material also can show different mobile performances under different External Force Actings.Mould material and suffered external force thereof have determined the actual filling mould states of wax-pattern filling die mould, are then also determining the precision of casting foundry goods.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of investment casting method is provided.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of investment casting method, comprises the following steps:
A, configuration mould material, the component of mould material and the mass percent of each component are paraffin 10-40%, stearic acid 10-40%, rosin 10-40%, ceresine 5-10%, and above each component is mixed into evenly under the temperature conditions of 30-60 ℃;
B, fusible pattern injection, be coated with and touch one deck turpentine oil on die mould surface, and the mixing mould material that steps A is obtained is poured into, fusible pattern injection;
C, the fusible pattern that step B is obtained are dried;
D, the fusible pattern that step C is obtained and running gate system combination, carry out the manufacture of shell;
E, the shell that step D is obtained carry out roasting;
Further comprising the steps of between steps A of the present invention and B:
A.1 be mixed into uniform mould material, cooling under the temperature conditions of 10-40 ℃, by mould material vigorous stirring, make mould material become paste state for step B.
Further comprising the steps of between step C of the present invention and D:
C.1 repair fusible pattern, obtain fusible pattern through step C, existence group such as glues, is mingled with at the defect;
Further comprising the steps of between step D of the present invention and E:
D.1 the shell outer surface obtaining at step D is coated refractory material,
Refractory material of the present invention is kaolinite class refractory material.
In step e of the present invention, sintering temperature is 600～1200 ℃, and roasting time is 4-6h.
The present invention adopts technique scheme, and compared with prior art tool has the following advantages:
Method provided by the invention, produced fusible pattern product size precision is high, and casting flaw is few, reliable product quality, utilize the method to pour into a mould the casting dimension precision, the surface quality that obtain high, be even applicable to cast complex-shaped, high temperature resistant, to be not easy to processing fusible pattern and foundry goods.
Method provided by the invention, shortens the production cycle, has improved production efficiency, has reduced production cost, and actual production is had to directive significance.
The specific embodiment
Make fusible pattern exemplar and form module with expendable pattern material (being generally the material of low melting point as wax material), and then module surface coats in (refractory material), after to be dried solidifying, module heating is melted out to mould material and form hollow shell, casting metal liquid after high temperature sintering, obtains foundry goods after cleaning.Because expendable pattern material is generally wax-based material, therefore claim again " lost-wax casting ".
The invention provides a kind of investment casting method, set forth particularly the material circumstance of each step in the method.Specific as follows:
A kind of investment casting method, comprises the following steps:
A, configuration mould material, the component of mould material and the mass percent of each component are paraffin 10-40%, stearic acid 10-40%, rosin 10-40%, ceresine 5-10%, and above each component is mixed into evenly under the temperature conditions of 30-60 ℃;
B, fusible pattern injection, be coated with and touch one deck turpentine oil on die mould surface, and the mixing mould material that steps A is obtained is poured into, fusible pattern injection;
C, the fusible pattern that step B is obtained are dried;
D, the fusible pattern that step C is obtained and running gate system combination, carry out the manufacture of shell;
E, the shell that step D is obtained carry out roasting;
Further comprising the steps of between steps A of the present invention and B:
A.1 be mixed into uniform mould material, cooling under the temperature conditions of 10-40 ℃, by mould material vigorous stirring, make mould material become paste state for step B.
Further comprising the steps of between step C of the present invention and D:
C.1 repair fusible pattern, obtain fusible pattern through step C, existence group such as glues, is mingled with at the defect;
Further comprising the steps of between step D of the present invention and E:
D.1 the shell outer surface obtaining at step D is coated refractory material,
Refractory material of the present invention is kaolinite class refractory material.Kaolinite belongs to aluminium-silicon series refractory material, is the aluminosilicate take aluminium oxide and silica as chief component.Aluminium-silicon series refractory material refractoriness is high, and linear expansion coefficient is little, and stability at elevated temperature is good, and heat endurance is high.
In step e of the present invention, sintering temperature is 600～1200 ℃, and roasting time is 4-6h.
As one embodiment of the present of invention, in steps A, the component of mould material and the mass percent of each component are paraffin 40%, stearic acid 30%, rosin 20%, ceresine 10%, and above each component is mixed under the heating-up temperature condition of 50 ℃.
As an alternative embodiment of the invention, in steps A, the component of mould material and the mass percent of each component are paraffin 30%, stearic acid 30%, rosin 30%, ceresine 10%, and above each component is mixed under the heating-up temperature condition of 40 ℃ of left and right.
Claims (6)
1. an investment casting method, is characterized in that, comprises the following steps:
A, configuration mould material, the component of mould material and the mass percent of each component are paraffin 10-40%, stearic acid 10-40%, rosin 10-40%, ceresine 5-10%, and above each component is mixed into evenly under the temperature conditions of 30-60 ℃;
B, fusible pattern injection, be coated with and touch one deck turpentine oil on die mould surface, and the mixing mould material that steps A is obtained is poured into, fusible pattern injection;
C, the fusible pattern that step B is obtained are dried;
D, the fusible pattern that step C is obtained and running gate system combination, carry out the manufacture of shell;
E, the shell that step D is obtained carry out roasting.
2. a kind of investment casting method according to claim 1, is characterized in that, further comprising the steps of between described steps A and B:
A.1 be mixed into uniform mould material, cooling under the temperature conditions of 10-40 ℃, by mould material vigorous stirring, make mould material become paste state for step B.
3. a kind of investment casting method according to claim 1, is characterized in that, further comprising the steps of between described step C and D:
C.1 repair fusible pattern, obtain fusible pattern through step C, existence group such as glues, is mingled with at the defect.
4. a kind of investment casting method according to claim 1, is characterized in that, further comprising the steps of between described step D and E:
D.1 the shell outer surface obtaining at step D is coated refractory material.
5. a kind of investment casting method according to claim 4, is characterized in that, described refractory material is kaolinite class refractory material.
6. a kind of investment casting method according to claim 1, is characterized in that, in described step e, sintering temperature is 600～1200 ℃, and roasting time is 4-6h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082213.3A CN103861998A (en) | 2014-03-07 | 2014-03-07 | Investment casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082213.3A CN103861998A (en) | 2014-03-07 | 2014-03-07 | Investment casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103861998A true CN103861998A (en) | 2014-06-18 |
Family
ID=50901350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410082213.3A Pending CN103861998A (en) | 2014-03-07 | 2014-03-07 | Investment casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103861998A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785719A (en) * | 2015-04-29 | 2015-07-22 | 柳州科尔特锻造机械有限公司 | Precision-investment casting method |
| CN104815958A (en) * | 2015-04-29 | 2015-08-05 | 柳州科尔特锻造机械有限公司 | Melted module precise casting process |
| CN104826993A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
| CN104826991A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
| CN104826994A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
| CN105802257A (en) * | 2016-04-26 | 2016-07-27 | 付远 | 3D-printed molding resin for investment casting |
| CN107913979A (en) * | 2017-10-30 | 2018-04-17 | 东莞理工学院 | A kind of packing type model casting wax based on lipophile micron graphite and preparation method thereof |
| CN108907094A (en) * | 2018-07-26 | 2018-11-30 | 安吉百福艺术品有限公司 | A kind of copper three-dimensional pattern high-precision is poured with mould material, auxiliary material and its casting method |
Citations (4)
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|---|---|---|---|---|
| US20030213576A1 (en) * | 2002-05-15 | 2003-11-20 | Howmet Research Corporation | Reinforced shell mold and method |
| CN101362187A (en) * | 2008-09-03 | 2009-02-11 | 湖北省丹江口丹传汽车传动轴有限公司 | Investment casting method |
| CN103028698A (en) * | 2012-12-12 | 2013-04-10 | 青岛三合山精密铸造有限公司 | Precise casting method of fired mold |
| CN103464683A (en) * | 2013-09-05 | 2013-12-25 | 贵州安吉航空精密铸造有限责任公司 | Investment casting method |
-
2014
- 2014-03-07 CN CN201410082213.3A patent/CN103861998A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030213576A1 (en) * | 2002-05-15 | 2003-11-20 | Howmet Research Corporation | Reinforced shell mold and method |
| CN101362187A (en) * | 2008-09-03 | 2009-02-11 | 湖北省丹江口丹传汽车传动轴有限公司 | Investment casting method |
| CN103028698A (en) * | 2012-12-12 | 2013-04-10 | 青岛三合山精密铸造有限公司 | Precise casting method of fired mold |
| CN103464683A (en) * | 2013-09-05 | 2013-12-25 | 贵州安吉航空精密铸造有限责任公司 | Investment casting method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785719A (en) * | 2015-04-29 | 2015-07-22 | 柳州科尔特锻造机械有限公司 | Precision-investment casting method |
| CN104815958A (en) * | 2015-04-29 | 2015-08-05 | 柳州科尔特锻造机械有限公司 | Melted module precise casting process |
| CN104826993A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
| CN104826991A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
| CN104826994A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
| CN105802257A (en) * | 2016-04-26 | 2016-07-27 | 付远 | 3D-printed molding resin for investment casting |
| CN107913979A (en) * | 2017-10-30 | 2018-04-17 | 东莞理工学院 | A kind of packing type model casting wax based on lipophile micron graphite and preparation method thereof |
| CN108907094A (en) * | 2018-07-26 | 2018-11-30 | 安吉百福艺术品有限公司 | A kind of copper three-dimensional pattern high-precision is poured with mould material, auxiliary material and its casting method |
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Application publication date: 20140618 |