CN203091672U - Reusable mould shell for directional solidification - Google Patents
Reusable mould shell for directional solidification Download PDFInfo
- Publication number
- CN203091672U CN203091672U CN 201320006526 CN201320006526U CN203091672U CN 203091672 U CN203091672 U CN 203091672U CN 201320006526 CN201320006526 CN 201320006526 CN 201320006526 U CN201320006526 U CN 201320006526U CN 203091672 U CN203091672 U CN 203091672U
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- China
- Prior art keywords
- shell
- housing
- directional solidification
- cast gate
- mould
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Abstract
The utility model relates to a reusable mould shell for directional solidification. The mould shell comprises a gate and a forming shell, which are vertically connected to form a whole body, wherein a communicated mould cavity is formed in the gate and the forming shell; an opening of the mould cavity is positioned at the upper end of the gate; the forming shell comprises an inner shell layer, a composite shell layer and an outer shell layer, which are sequentially connected with one another from inside to outside; and the composite shell layer comprises a plurality of substrates and a fireproof layer covering the substrates. The mould shell is simple, compact and reasonable in structure; and the mould cavity has a regular shape, and the mould shell can be reused for many times, so that production costs and fireproof material wastes can be reduced.
Description
Technical field
The utility model relates to a kind of shell that is repeatedly used that is used for directional solidification.
Background technology
Magnetostriction materials be have remarkable magnetostrictive effect, can convert electrical energy into mechanical energy or mechanical energy is converted to the magnetic material of electric energy.
Magnetostriction materials have a wide range of applications in the ultrasonic field of low-frequency high-power.When making transducer with magnetostriction materials, apply magnetic field for convenience, the material center generally all has window; In order to reduce eddy current effect, require magnetostriction materials to form by sheet stacking insulated from each other.Therefore, be used for the magnetostrictive vibrator of large power supersonic, the magnetostriction materials of its core all are to form by the sheet stacking insulated from each other that the centre has a window, usually, have the cuboid of window in the middle of being shaped as after it piles up.
The metal magnetostriction materials, as Tb-Dy-Fe alloy, Fe-Ga alloy, Fe-Co alloy etc., there is tangible anisotropy in its magnetostriction performance, along the direction of easy axis magnetostriction excellent performance of alloy.Therefore, when composition was certain, there be close getting in touch in the performance of magnetostriction alloy and its preparation method and technology.Traditional magnetostriction materials such as nickel, ferroaluminium etc., its magnetostrictive strain value is little, uses less in the large power supersonic field.Rare earth ultra-magnetostriction material (as the Tb-Dy-Fe alloy) and 21 century just begin the Fe-Ga alloy that grows up, and its magnetostrictive strain value is big, in the large power supersonic field wide application prospect is arranged.Regrettably, rare earth ultra-magnetostriction material plasticity is too poor, can't be processed into strip by the method for traditional pressure processing.For the Fe-Ga alloy,,, do not find a kind of preparation technology of the high-performance strip that can be mass-produced so far yet though can be rolled into strip through the effort in surplus ten years.For these reasons, people have to use the magnetostriction alloy of directional solidification to make transducer.
The method of directional solidification has multiple, and wherein, the high speed directional solidification method is a kind of method of the larger-size alloy material of production commonly used.The characteristics of this method are to shift out from thermal insulation furnace body or body of heater is moved apart this casting mold with the casting mold that certain speed is equipped with molten alloy liquid with inside.According to the characteristics of this method, require casting mold at high temperature to keep the long period and do not break, also require casting mold can bear certain thermal shock simultaneously.Directional solidification processes is used morely in the production of high-temperature alloy blades, and the shell that is used for the high temperature alloy directional solidification can satisfy above-mentioned requirements well.But, because high-temperature alloy blades is complex-shaped, this shell all designs for disposable use.
The directional solidification magnetic alloy is made the pole shape usually, the thin slice that is processed into the band window from pole shape alloy generally includes following steps, pole is processed into square rod, in the middle of square rod, processes the window of the shape that requires, be cut to thin slice by slice process then.By the thin slice that this method is processed into, kept the high magnetostriction performance of directional solidificating alloy, but its technological process is longer, the cost height.In the directional solidification process, shell all is that disposable height expends product, and this not only can further increase the cost of final product, but also can produce a large amount of refractory wastes.Therefore rule can, can be reused formwork and the reduction product cost with the foundry goods demoulding under the prerequisite of not destroying shell in view of the investment shell intracavity that is used for some material directional solidification is simple.But, because current formwork all is disposable use design, often use a rear surface just to occur to continue to use than large fracture.In addition, in order to prevent that shell from use partly coming off, the minority shell can twine one deck alloy silk in manufacturing process reinforces, though this shell can prevent effectively that shell from partly coming off, but because adhesion is poor between wire and the shell refractory material, in a single day the crackle that is than wide-angle with wire produces, and wire also is difficult to stop the expansion of crackle, can't realize being repeatedly used of shell.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, thereby a kind of directional solidification that is used for is provided, cavity shape rule, simple, and the shell that can be repeatedly used, thus can reduce production costs, reduce the generation of refractory waste.
The technical scheme that provides according to the utility model, the shell that is repeatedly used that is used for directional solidification comprises cast gate and the molded housing that links into an integrated entity up and down, be provided with the die cavity of connection in cast gate and the molded housing, the opening of die cavity is positioned at the cast gate upper end, it is characterized in that: described molded housing comprises housing internal layer, housing composite bed and the housing skin that connects successively from inside to outside.The housing composite bed comprises several basic units and the flame retardant coating that covers in the basic unit.
Further, described basic unit is netted.Described cast gate cross section is circular.Described molded housing cross section is a rectangle.
Compared with the prior art the utility model has the following advantages: the utility model is simple, compact and reasonable for structure; The cavity shape rule can be repeatedly used, thereby can reduce production costs, reduce the generation of refractory waste.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the molded housing sectional view.
Description of reference numerals: 1-cast gate, 2-molded housing, 3-housing internal layer, 4-housing composite bed, 5-housing skin, 6-die cavity.
The specific embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
Shown in Fig. 1 ~ 2, the utility model mainly comprises cast gate 1 and the molded housing 2 that links into an integrated entity up and down.Be provided with the die cavity 6 of connection in cast gate 1 and the molded housing 2, the opening of die cavity 6 is positioned at cast gate 1 upper end.
Described molded housing 2 comprises housing internal layer 3, housing composite bed 4 and the housing skin 5 that connects successively from inside to outside, and housing internal layer 3 and housing outer 5 adopts refractory material to make.Housing composite bed 4 comprises several basic units and the flame retardant coating that covers in the basic unit, and basic unit is netted, adopts siderochrome aluminium, nickel base superalloy or niobium alloy material to make, and its fusing point is higher than the shell serviceability temperature more than 50 ℃.Flame retardant coating adopts refractory material to make.
Described cast gate 1 cross section is circular, and cast gate 1 adopts refractory material to make.Described molded housing 2 cross sections are rectangle.
The utility model in use, molten metal enters in the molded housing 2 by cast gate 1, molded housing 2 is as the shell that makes the alloy moulding.When if housing internal layer 3 and housing skin 5 crack, the housing composite bed 4 that it closes on can stop the expansion of crackle effectively, and the crackle of small non-penetrative can not cause the runout phenomenon in the alloy liquid, directional solidification process, so the utility model can repeatedly be used for the directional solidification to the not high material of surface quality and dimension precision requirement.
Claims (4)
1. shell that is repeatedly used that is used for directional solidification, comprise the cast gate (1) and the molded housing (2) that link into an integrated entity up and down, be provided with the die cavity (6) of connection in cast gate (1) and the molded housing (2), the opening of die cavity (6) is positioned at cast gate (1) upper end, it is characterized in that: described molded housing (2) comprises housing internal layer (3), housing composite bed (4) and the housing skin (5) that connects successively from inside to outside; Housing composite bed (4) comprises several basic units and the flame retardant coating that covers in the basic unit.
2. the shell that is repeatedly used that is used for directional solidification as claimed in claim 1 is characterized in that: described basic unit is netted.
3. the shell that is repeatedly used that is used for directional solidification as claimed in claim 1 is characterized in that: described cast gate (1) cross section is for circular.
4. the shell that is repeatedly used that is used for directional solidification as claimed in claim 1 is characterized in that: described molded housing (2) cross section is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320006526 CN203091672U (en) | 2013-01-07 | 2013-01-07 | Reusable mould shell for directional solidification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320006526 CN203091672U (en) | 2013-01-07 | 2013-01-07 | Reusable mould shell for directional solidification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203091672U true CN203091672U (en) | 2013-07-31 |
Family
ID=48843117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320006526 Expired - Fee Related CN203091672U (en) | 2013-01-07 | 2013-01-07 | Reusable mould shell for directional solidification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203091672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746564A (en) * | 2018-05-03 | 2018-11-06 | 清华大学 | The method for realizing directional solidification based on 3D printing multilayer hollow shell mould |
-
2013
- 2013-01-07 CN CN 201320006526 patent/CN203091672U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746564A (en) * | 2018-05-03 | 2018-11-06 | 清华大学 | The method for realizing directional solidification based on 3D printing multilayer hollow shell mould |
| CN108746564B (en) * | 2018-05-03 | 2019-07-12 | 清华大学 | The method for realizing directional solidification based on 3D printing multilayer hollow shell mould |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160801 Address after: 100020 Beijing city Chaoyang District Ritan Road No. 17 Ritan International Trade Center building B 4A23 Patentee after: Beijing Magoriental Material Technical Co., Ltd. Address before: 214194 Jiangsu Province, Wuxi city Xishan District Beizhen Industrial Park tin Jing Shui Road No. 26 Patentee before: Wuxi Zhengyi Shengyuan Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20180107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |