CN108044036A - A kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks - Google Patents
A kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks Download PDFInfo
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- CN108044036A CN108044036A CN201711299037.9A CN201711299037A CN108044036A CN 108044036 A CN108044036 A CN 108044036A CN 201711299037 A CN201711299037 A CN 201711299037A CN 108044036 A CN108044036 A CN 108044036A
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- casting
- high temperature
- temperature alloy
- wax
- formwork
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention belongs to hot investment casting fields, and in particular to a kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks.Warm type wax suppresses wax-pattern in, and wax-pattern module is assembled by artwork；Ceramic shell mould is made using traditional process for making shell, after formwork prepares, is dewaxed in dewaxing kettle；The formwork for the completion that dewaxes is put into sandbox.After kiln roasting is roasted, the melting K4002 high temperature alloys in semicontinuous vaccum sensitive stove, after reaching pouring temperature, it pours into the shell of preheating rapidly, after being poured, vacuum breaker, feeding head adds in magnesium powder heat preservation, air-cooled, and high-temperature alloy casting is obtained after cleaning polishing.Method using the present invention eliminates casting crack in K4002 high temperature alloy thin-wall parts, reduces microporosity defect, has prepared qualified precision casting.
Description
Technical field
The invention belongs to hot investment casting fields, and in particular to a kind of inhibition K4002 high temperature alloy thin-wall part casting cracks
Casting method.
Background technology
K4002 alloys are one of highest alloy of performance level, tool in the existing casting equiax crystal high temperature alloy in current China
Having higher high temperature and medium-temperature constancy and Blade Properties, also more general nickel-base cast superalloy is good.K4002 is used for earliest
Turbo blade is made on China's engine, high-pressure turbine blade is done for engines such as RB211, this shellfish MK202 in foreign countries.With
Equipment Development demand, K4002 alloys are gradually available for high-temperature-resistant structure part.
During high temperature alloy thin-wall part hot investment casting, especially K4002 high temperature alloys, plasticity ratio is relatively low, is cast as
Type technique is very crucial.Moulding process control is improper, casting flaw, especially crackle easily occurs, reduces precision casting quality,
Precision casting is even resulted in scrap.The patent of Application No. 201510271563.9 is related to a kind of method for inhibiting casting crack.
The patent is reduced the cooling velocity of molten metal, reduces casting thermal stress, and then reduced casting and split by the temperature of formwork to be cast
Line.It is disadvantageous in that：It is coarse that the reduction of cooling velocity often leads to grain structure, and mechanical property reduces, it is impossible to which satisfaction is set
Meter demand.The patent of Application No. 201620736742.5 is directed to a kind of inhibition casting crack method.The Patent design passes through
Combined type anticracking shrinkage rib is added to avoid the stress and heat treatment residual stress drawing crack casting that molten metal solidification shrinkage generates.Its
It is disadvantageous in that：The introducing of reinforcing rib not only adds the complexity of mold, improves development cost, and is received in removal
While contracting muscle, the position fine grained region is had also been removed, reduces mechanical castings；In addition, also add later stage worker simultaneously
Polishing workload.
The content of the invention
It is an object of the invention to overcome the existing high temperature alloy thin-wall part moulding process type of cooling that can not eliminate casting to split
The deficiency of line devises a kind of type of cooling of casting process scheme control molten metal, to realize that K4002 high temperature alloys thin-walled is cast
It is prepared by part high quality.It is primarily characterized in that：K4002 high temperature alloy pouring technologies；High temperature alloy thin-wall part casts the type of cooling.
To achieve the above object, the present invention is achieved through the following technical solutions.
A kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks, includes the following steps：
First, warm type wax suppresses wax-pattern in, and wax-pattern module is assembled by artwork；
Then, ceramic shell mould is made by traditional process for making shell, after formwork prepares, dewaxed in dewaxing kettle；
Secondly, the formwork by the completion that dewaxes is put into sandbox, and casting upper side buries mullite sand, and downside is not buried, formwork
It is placed directly in sandbox bottom；
Finally, 40h is roasted at 900 DEG C in roaster, the melting K4002 high temperature alloys in semicontinuous vaccum sensitive stove,
1460 DEG C of pouring temperature；Poring rate 20kg/s, filling time 5-10s, after being poured, vacuum breaker, cast gate position adds in magnesium
Powder is kept the temperature, air-cooled, and qualification K4002 thin-wall high temperature alloy casting is obtained after cleaning polishing.
Beneficial effects of the present invention
Method using the present invention eliminates casting crack in K4002 high temperature alloy thin-wall parts, reduces microporosity and lacks
It falls into, prepares qualified precision casting.
Description of the drawings
Fig. 1 is the structure diagram of K4002 high temperature alloys thin-wall part of the present invention；
1- cast gates in figure, 2- thin-section castings, 3- mullite sand, 4- sandboxes,
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
A kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks, warm type wax suppresses wax in
Mould assembles wax-pattern module by artwork；Ceramic shell mould is made using traditional process for making shell, after formwork prepares, is being dewaxed
It dewaxes in kettle；The formwork for the completion that dewaxes is put into sandbox 4.Traditional hot investment casting type of cooling：Casting all buries sand and easily produces
Raw rarefaction defect, and all not bury sand thin-section casting easily cracked for casting.Cleverly the type of cooling is on casting to the present invention
Mullite sand 3 is buried in side, and to inhibit crackle generation, downside does not bury mullite sand, and formwork is placed directly in sandbox bottom to control
Cooldown rate reduces rarefaction defect.40h is roasted at 900 DEG C in roaster, the melting 15Kg in semicontinuous vaccum sensitive stove
K4002 high temperature alloys, 1460 DEG C of pouring temperature；Poring rate 20kg/s, filling time 5s, after being poured, vacuum breaker, cast gate
1 position adds in magnesium powder heat preservation, air-cooled, and qualification K4002 thin-wall high temperature alloys casting 2 is obtained after cleaning polishing.
Claims (1)
1. a kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks, which is characterized in that including walking as follows
Suddenly：
(1) warm type wax compacting wax-pattern in using, wax-pattern module is assembled by artwork；
(2) ceramic shell mould is made by traditional process for making shell, after formwork prepares, dewaxed in dewaxing kettle；
(3) formwork by the completion that dewaxes is put into sandbox, and casting upper side buries mullite sand, and downside is not buried, and formwork is directly put
In sandbox bottom；
(4) 40h is roasted at 900 DEG C in roaster, the melting K4002 high temperature alloys in semicontinuous vaccum sensitive stove, cast temperature
1460 DEG C, poring rate 20kg/s, filling time 5-10s of degree, after being poured, vacuum breaker, cast gate position adds in magnesium powder heat preservation,
It is air-cooled, obtain qualification K4002 thin-wall high temperature alloy casting after cleaning polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299037.9A CN108044036A (en) | 2017-12-08 | 2017-12-08 | A kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299037.9A CN108044036A (en) | 2017-12-08 | 2017-12-08 | A kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108044036A true CN108044036A (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711299037.9A Pending CN108044036A (en) | 2017-12-08 | 2017-12-08 | A kind of casting method for inhibiting K4002 high temperature alloy thin-wall part casting cracks |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076290A (en) * | 2019-05-15 | 2019-08-02 | 江苏荣元铸业有限公司 | A kind of gate valve body model casting casting process |
| CN110202089A (en) * | 2019-07-11 | 2019-09-06 | 北京钢研高纳科技股份有限公司 | The complex modeling method and its application of casting |
| CN114192744A (en) * | 2021-12-15 | 2022-03-18 | 中国航发动力股份有限公司 | Solution method for undercasting, loosening and cracking of swirler precision casting |
| CN114309469A (en) * | 2021-12-15 | 2022-04-12 | 中国科学院金属研究所 | Method for controlling generation of fine grains in high-temperature alloy thin-wall part |
Citations (4)
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| CN101549385A (en) * | 2008-03-31 | 2009-10-07 | 沈阳工业大学 | Process method for preparing high-temperature alloy miniature precision casting part |
| CN101767193A (en) * | 2009-12-25 | 2010-07-07 | 沈阳工业大学 | Process method for eliminating loose of thick and large casting of high-temperature alloy |
| CN105583366A (en) * | 2016-01-14 | 2016-05-18 | 西安交通大学城市学院 | Precision casting method for thin-wall high-temperature alloy floating wall tiles |
| CN107116183A (en) * | 2017-05-10 | 2017-09-01 | 钢铁研究总院 | The method that ceramic core and soluble core prepare complicated hollow die cavity casting |
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2017
- 2017-12-08 CN CN201711299037.9A patent/CN108044036A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549385A (en) * | 2008-03-31 | 2009-10-07 | 沈阳工业大学 | Process method for preparing high-temperature alloy miniature precision casting part |
| CN101767193A (en) * | 2009-12-25 | 2010-07-07 | 沈阳工业大学 | Process method for eliminating loose of thick and large casting of high-temperature alloy |
| CN105583366A (en) * | 2016-01-14 | 2016-05-18 | 西安交通大学城市学院 | Precision casting method for thin-wall high-temperature alloy floating wall tiles |
| CN107116183A (en) * | 2017-05-10 | 2017-09-01 | 钢铁研究总院 | The method that ceramic core and soluble core prepare complicated hollow die cavity casting |
Non-Patent Citations (1)
| Title |
|---|
| 谢秋峰等: "K4002合金异型复杂薄壁进气道铸件的成型工艺研究", 《第十三届中国高温合金年会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076290A (en) * | 2019-05-15 | 2019-08-02 | 江苏荣元铸业有限公司 | A kind of gate valve body model casting casting process |
| CN110202089A (en) * | 2019-07-11 | 2019-09-06 | 北京钢研高纳科技股份有限公司 | The complex modeling method and its application of casting |
| CN114192744A (en) * | 2021-12-15 | 2022-03-18 | 中国航发动力股份有限公司 | Solution method for undercasting, loosening and cracking of swirler precision casting |
| CN114309469A (en) * | 2021-12-15 | 2022-04-12 | 中国科学院金属研究所 | Method for controlling generation of fine grains in high-temperature alloy thin-wall part |
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Application publication date: 20180518 |
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