CN105945227A - Precise casting technology for fusion mold - Google Patents
Precise casting technology for fusion mold Download PDFInfo
- Publication number
- CN105945227A CN105945227A CN201610440930.8A CN201610440930A CN105945227A CN 105945227 A CN105945227 A CN 105945227A CN 201610440930 A CN201610440930 A CN 201610440930A CN 105945227 A CN105945227 A CN 105945227A
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- CN
- China
- Prior art keywords
- mold
- shell
- casting
- wax
- casting technology
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a precise casting technology for a fusion mold. The technology comprises the steps that firstly, a mold material is prepared; secondly, after being sleeked, a wax mold is welded to a pouring system, and then a mold set is obtained; thirdly, the outer surface of the mold set is coated with fireproof materials, sand is scattered for reinforcing, drying and hardening are conducted, and a mold shell is manufactured; fourthly, the surface of the mold shell is evenly covered with the mold material obtained in the first step, the dewaxing procedure is conducted, and dewaxing is conducted; fifthly, the dewaxed mold shell is roasted, the roasting temperature ranges from 840 DEG C to 920 DEG C, and the roasting time ranges from 3 h to 4 h; and sixthly, alloy liquid is poured in the roasted mold shell, the alloy liquid is cleaned after being solidified, and a casting is obtained. Compared with the prior art, the wax mold obtained through the casting technology is not prone to deformation, and the size stability of the obtained casting is good; raw materials are sufficiently utilized, and the production cost is low; and the casting has very high size precision and surface smoothness, and the production efficiency is high.
Description
Technical field
The present invention relates to precision casting technology field, be specifically related to a kind of precision-investment casting work
Skill.
Background technology
It is at twentieth century four that modern investment casting method obtains actual application in the industrial production
The ten's, the at that time development of aero-jet engine, it is desirable to manufacture as impeller, nozzle, automobile
Accessories etc. are complex-shaped.Owing to heat-resisting alloy material is difficult to machining, part shape is complicated,
So that can not or be difficult to other method manufacture, it is, thus, sought for a kind of new accurate one-tenth
Type technique, then uses for reference the lost-wax casting being handed down ancient times, through changing material and technique
Enter, on the basis of modern investment casting method technique in ancient times, obtain important development.So,
The development of aircraft industry has promoted the application of model casting, and the updating with complete of model casting
Kind, also improve performance further for aircraft industry and create favourable condition.
The advantage of model casting maximum is owing to investment-casting has the highest dimensional accuracy and table
Face fineness, so machining operations can be reduced, simply requires higher position on part
A little allowance, even some foundry goods is stayed only to stay polishing, polishing surplus, it is not necessary to machinery
Processing can use.As can be seen here, use investment casting method can save in a large number machine tool and
Machining period, significantly saves raw material metal.
Along with model casting precision castings is towards the development of integration, thin-walled property and maximization, wax-pattern
Compacting and the design of die mould encounter new challenge, the flowing of moltening mold castings mould material presents non-
Newtonian fluid characteristic, the mould material of different compositions has different rheological behaviors；Same mould material is not
Also different mobile performances can be shown under same External Force Acting.Mould material and suffered external force thereof determine
The actual filling mould states of wax-pattern filling die mould, also determine the precision of cast foundry goods then.
Summary of the invention
It is desirable to provide a kind of investment precision casting technology.
The present invention provides following technical scheme:
A kind of investment precision casting technology, comprises the following steps:
(1) configuration mould material: mould material include following parts by weight component: paraffin 30-40
Part, octyl stearate 15-30 part, microwax 20-25 part, polyamide wax 10-20 part, poly-
Ethylene waxes 10-18 part, stearic acid 2-5 part, dimethylbenzene 1 part, by above each component at 45-50
DEG C temperature conditions under be mixed into uniform one, mould material stirs 8-12 at 110-120 DEG C
Hour, remove moisture content, the wax material of finished off water is delivered to insulation in the standing bucket of 70-85 DEG C and stands
In Tong, insulation stands 8-12 hour, holding temperature 48-52 DEG C, suppresses running channel, make after insulation
Mould material becomes paste state for fusible pattern injection；
(2) then carry out welding obtaining module with running gate system by wax-pattern smoothing；
(3) outer surface at module coats refractory material, and then stucco is reinforced, and is dried, firmly
Change the manufacture carrying out shell；
(4) mould material uniform fold step (1) obtained enters dewaxing operation in shell surface
Dewax；
(5) shell dewaxed being carried out roasting, sintering temperature 840-920 DEG C, during roasting
Between 3-4h；
(6) pouring into a mould aluminium alloy in the shell after roasting, after solidification, cleaning obtains foundry goods.
Refractory material quartz sand in described step (3) and the mixture of bauxite.
In described step (6), cast initial temperature is 435-450 DEG C, adjusts and water after 10min
Note temperature is 680-730 DEG C.
Compared with prior art, the invention has the beneficial effects as follows: the casting technique wax-pattern of the present invention
It is unlikely to deform, the casting dimension good stability obtained；Raw material utilizes fully, and production cost is low；
Foundry goods has the highest dimensional accuracy and surface smoothness, and production efficiency is high.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into this
The scope of bright protection.
A kind of investment precision casting technology, comprises the following steps:
(1) configuration mould material: mould material include following parts by weight component: paraffin 30-40
Part, octyl stearate 15-30 part, microwax 20-25 part, polyamide wax 10-20 part, poly-
Ethylene waxes 10-18 part, stearic acid 2-5 part, dimethylbenzene 1 part, by above each component at 45-50
DEG C temperature conditions under be mixed into uniform one, mould material stirs 8-12 at 110-120 DEG C
Hour, remove moisture content, the wax material of finished off water is delivered to insulation in the standing bucket of 70-85 DEG C and stands
In Tong, insulation stands 8-12 hour, holding temperature 48-52 DEG C, suppresses running channel, make after insulation
Mould material becomes paste state for fusible pattern injection；
(2) then carry out welding obtaining module with running gate system by wax-pattern smoothing；
(3) outer surface at module coats refractory material, and then stucco is reinforced, and is dried, firmly
Change the manufacture carrying out shell；
(4) mould material uniform fold step (1) obtained enters dewaxing operation in shell surface
Dewax；
(5) shell dewaxed being carried out roasting, sintering temperature 840-920 DEG C, during roasting
Between 3-4h；
(6) pouring into a mould aluminium alloy in the shell after roasting, after solidification, cleaning obtains foundry goods.
Refractory material quartz sand in described step (3) and the mixture of bauxite.
In described step (6), cast initial temperature is 435-450 DEG C, adjusts cast after 10min
Temperature is 680-730 DEG C.
It is obvious to a person skilled in the art that the invention is not restricted to described one exemplary embodiment
Details, and without departing from the spirit or essential characteristics of the present invention, it is possible to it
His concrete form realizes the present invention.Therefore, no matter from the point of view of which point, all should be by embodiment
Regarding exemplary as, and be nonrestrictive, the scope of the present invention is by claims
Rather than described explanation limit, it is intended that by fall claim equivalency implication and
In the range of all changes include in the present invention.Although moreover, it will be appreciated that this specification
It is been described by according to embodiment, but the most each embodiment only comprises an independent technology
Scheme, this narrating mode of description is only for clarity sake, and those skilled in the art should
When using description as an entirety, the technical scheme in each embodiment can also be through suitable group
Close, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. an investment precision casting technology, it is characterised in that comprise the following steps:
(1) configuration mould material: mould material include following parts by weight component: paraffin 30-40
Part, octyl stearate 15-30 part, microwax 20-25 part, polyamide wax 10-20 part, poly-
Ethylene waxes 10-18 part, stearic acid 2-5 part, dimethylbenzene 1 part, by above each component at 45-50
DEG C temperature conditions under be mixed into uniform one, mould material stirs 8-12 at 110-120 DEG C
Hour, remove moisture content, the wax material of finished off water is delivered to insulation in the standing bucket of 70-85 DEG C and stands
In Tong, insulation stands 8-12 hour, holding temperature 48-52 DEG C, suppresses running channel, make after insulation
Mould material becomes paste state for fusible pattern injection；
(2) then carry out welding obtaining module with running gate system by wax-pattern smoothing；
(3) outer surface at module coats refractory material, and then stucco is reinforced, and is dried, firmly
Change the manufacture carrying out shell；
(4) mould material uniform fold step (1) obtained enters dewaxing operation in shell surface
Dewax；
(5) shell dewaxed being carried out roasting, sintering temperature 840-920 DEG C, during roasting
Between 3-4h；
(6) pouring into a mould aluminium alloy in the shell after roasting, after solidification, cleaning obtains foundry goods.
A kind of investment precision casting technology the most according to claim 1, it is characterised in that:
Refractory material quartz sand in described step (3) and the mixture of bauxite.
A kind of investment precision casting technology the most according to claim 1, it is characterised in that:
In described step (6), cast initial temperature is 435-450 DEG C, adjusts cast temperature after 10min
Degree is for 680-730 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610440930.8A CN105945227A (en) | 2016-06-20 | 2016-06-20 | Precise casting technology for fusion mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610440930.8A CN105945227A (en) | 2016-06-20 | 2016-06-20 | Precise casting technology for fusion mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105945227A true CN105945227A (en) | 2016-09-21 |
Family
ID=56906912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610440930.8A Pending CN105945227A (en) | 2016-06-20 | 2016-06-20 | Precise casting technology for fusion mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105945227A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424562A (en) * | 2016-09-29 | 2017-02-22 | 广西大学 | Precision investment casting method eliminating shrinkage cavities and porosity defects |
| CN106513575A (en) * | 2016-09-29 | 2017-03-22 | 广西大学 | Manufacturing method of precise casting mold |
| CN106862489A (en) * | 2017-02-22 | 2017-06-20 | 江苏汤臣汽车零部件有限公司 | A kind of truck Retarder Impeller Machining method |
| CN107962149A (en) * | 2017-12-18 | 2018-04-27 | 定远县宝隆机械制造有限公司 | A kind of model casting sheathing material formula |
| CN108015231A (en) * | 2017-12-19 | 2018-05-11 | 江西瑞冠精密铸造有限公司 | A kind of investment precision casting technology |
| CN108129728A (en) * | 2017-12-18 | 2018-06-08 | 定远县宝隆机械制造有限公司 | A kind of investment casting wax formula |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439074A (en) * | 2014-11-27 | 2015-03-25 | 宁波通达精密铸造有限公司 | Fusible mold precision casting method |
| CN104826991A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
| CN105057594A (en) * | 2015-07-30 | 2015-11-18 | 宁波天业精密铸造有限公司 | Precise investment casting technology |
-
2016
- 2016-06-20 CN CN201610440930.8A patent/CN105945227A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439074A (en) * | 2014-11-27 | 2015-03-25 | 宁波通达精密铸造有限公司 | Fusible mold precision casting method |
| CN104826991A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
| CN105057594A (en) * | 2015-07-30 | 2015-11-18 | 宁波天业精密铸造有限公司 | Precise investment casting technology |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424562A (en) * | 2016-09-29 | 2017-02-22 | 广西大学 | Precision investment casting method eliminating shrinkage cavities and porosity defects |
| CN106513575A (en) * | 2016-09-29 | 2017-03-22 | 广西大学 | Manufacturing method of precise casting mold |
| CN106862489A (en) * | 2017-02-22 | 2017-06-20 | 江苏汤臣汽车零部件有限公司 | A kind of truck Retarder Impeller Machining method |
| CN106862489B (en) * | 2017-02-22 | 2018-12-11 | 江苏汤臣汽车零部件有限公司 | A kind of truck Retarder Impeller Machining method |
| CN107962149A (en) * | 2017-12-18 | 2018-04-27 | 定远县宝隆机械制造有限公司 | A kind of model casting sheathing material formula |
| CN108129728A (en) * | 2017-12-18 | 2018-06-08 | 定远县宝隆机械制造有限公司 | A kind of investment casting wax formula |
| CN108015231A (en) * | 2017-12-19 | 2018-05-11 | 江西瑞冠精密铸造有限公司 | A kind of investment precision casting technology |
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Application publication date: 20160921 |