JPS5717364A - Method for precision casting - Google Patents
Method for precision castingInfo
- Publication number
- JPS5717364A JPS5717364A JP9102280A JP9102280A JPS5717364A JP S5717364 A JPS5717364 A JP S5717364A JP 9102280 A JP9102280 A JP 9102280A JP 9102280 A JP9102280 A JP 9102280A JP S5717364 A JPS5717364 A JP S5717364A
- Authority
- JP
- Japan
- Prior art keywords
- crucible
- bottom cover
- casting material
- tapping hole
- melting point
- 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.)
- Granted
Links
Landscapes
- Dental Prosthetics (AREA)
Abstract
PURPOSE: To appropriately set the tapping temperature in accordance with the quality of a casting material, by blocking the tapping hole at the bottom of a crucible with a bottom cover made of a material which has a higher melting point than that of a casting material, and heating and melting the casting material and bottom cover in the crucible.
CONSTITUTION: A crucible 14 has a crater-shaped bath room 16 at the central portion and a tapping hole 17 at the bottom wall. The tapping hole is blocked with a bottom cover 55 made of a metallic material which has a higher melting point than a molten metal 33 has. The casting material 33 is placed on the bottom cover 55, and then, an arc discharge 54 is generated by applying a high voltage accross an arc discharge electrode 34 and the material 33 while a pressure is being applied to the crucible and the inside of crucible is set to an inert atmosphere. The material 33 is melted and becomes a molten casting material 33b. The temperature is increased further more, but the material 33 will not be boiled because of the pressure applied in the crucible. When the temperature reaches the melting point of bottom cover 55, the cover 55 is melted instantly and the molten metal flows down to the mold located at the lower position through the tapping hole 17. Simultaneously, the arc discharge 54 is stopped automatically.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9102280A JPS5717364A (en) | 1980-07-02 | 1980-07-02 | Method for precision casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9102280A JPS5717364A (en) | 1980-07-02 | 1980-07-02 | Method for precision casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5717364A true JPS5717364A (en) | 1982-01-29 |
| JPS5746950B2 JPS5746950B2 (en) | 1982-10-06 |
Family
ID=14014908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9102280A Granted JPS5717364A (en) | 1980-07-02 | 1980-07-02 | Method for precision casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5717364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759605A (en) * | 2015-04-29 | 2015-07-08 | 上海工程技术大学 | Side-sucking vacuum casting die adjustable in suction force |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102186423B1 (en) * | 2018-11-13 | 2020-12-03 | 엘지전자 주식회사 | Air conditioner and operation method thereof |
-
1980
- 1980-07-02 JP JP9102280A patent/JPS5717364A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759605A (en) * | 2015-04-29 | 2015-07-08 | 上海工程技术大学 | Side-sucking vacuum casting die adjustable in suction force |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5746950B2 (en) | 1982-10-06 |
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