BG60152B2 - Method for precision casting making - Google Patents
Method for precision casting makingInfo
- Publication number
- BG60152B2 BG60152B2 BG089728A BG8972889A BG60152B2 BG 60152 B2 BG60152 B2 BG 60152B2 BG 089728 A BG089728 A BG 089728A BG 8972889 A BG8972889 A BG 8972889A BG 60152 B2 BG60152 B2 BG 60152B2
- Authority
- BG
- Bulgaria
- Prior art keywords
- casting
- pattern
- crate
- burnt
- refractory material
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- 238000005495 investment casting Methods 0.000 title 1
- 238000005266 casting Methods 0.000 abstract 6
- 239000011819 refractory material Substances 0.000 abstract 3
- 229910001338 liquidmetal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 238000009489 vacuum treatment Methods 0.000 abstract 1
Landscapes
- Dental Prosthetics (AREA)
Abstract
The method is used in foundry engineering. The castings produced by the method display high geometrical and dimensional accuracy and improved physico-mechanical properties since the gas inclusions in the castings are reduced to the maximum. According to the method the burnt-pattern due to be cast is placed in a vacuum treated casting crate. The space between the burnt pattern and the interior of the crate are filled simultaneously with dry fine-grained refractory material and subjected to vibration. The free surface of the dry fine-grained refractory material is covered with a plastic foil and the so-formed casting crate is subjected to vacuum treatment and then the liquid metal is poured. Under the effect of the molten metal the pattern burns and the empty space is filled by the liquid metal. Prior to pouring of the molten metal the dry fine-grained refractory material is removed from the inner part of the burnt shell pattern. After crystallization of the casting vacuum is switched off and the casting is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG089728A BG60152B2 (en) | 1989-09-12 | 1989-09-12 | Method for precision casting making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG089728A BG60152B2 (en) | 1989-09-12 | 1989-09-12 | Method for precision casting making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG60152B2 true BG60152B2 (en) | 1993-11-30 |
Family
ID=3922286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG089728A BG60152B2 (en) | 1989-09-12 | 1989-09-12 | Method for precision casting making |
Country Status (1)
| Country | Link |
|---|---|
| BG (1) | BG60152B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710303A (en) * | 2016-04-01 | 2016-06-29 | 北京昌航精铸技术有限公司 | Vacuum vibration precise casting device and method of high-temperature alloy |
-
1989
- 1989-09-12 BG BG089728A patent/BG60152B2/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710303A (en) * | 2016-04-01 | 2016-06-29 | 北京昌航精铸技术有限公司 | Vacuum vibration precise casting device and method of high-temperature alloy |
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