JPS57190763A - Casting method for copper alloy by melting - Google Patents
Casting method for copper alloy by meltingInfo
- Publication number
- JPS57190763A JPS57190763A JP7516881A JP7516881A JPS57190763A JP S57190763 A JPS57190763 A JP S57190763A JP 7516881 A JP7516881 A JP 7516881A JP 7516881 A JP7516881 A JP 7516881A JP S57190763 A JPS57190763 A JP S57190763A
- Authority
- JP
- Japan
- Prior art keywords
- copper alloy
- metal
- crucible
- copper
- low
- 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.)
- Pending
Links
Abstract
PURPOSE: To reduce the segregation of a low m. p. metal and to produce a copper alloy of less defects by melting the copper alloy cast by adding an inert gas and the low m. p. metal into the molten copper in a vacuum melting furnace by heating in a vacuum and cooling the same to allow it to solidify as it is in a crucible.
CONSTITUTION: After the inside of the vacuum vessel in a vacuum melting furnace is evacuated to ≤10-4 Torr, the copper in a crucible is melted by heating, and is held as it is for some time, whereby it is degassed. Upon completion of this degassing, an inert gas such as gaseous Ar is introduced into the furnace, and a low m. p. metal such as Bi is added to penetrate the Bi thoroughly into the molten copper, immediately after which the molten metal is cast into a mold. This cast copper alloy is inserted into the crucible in the vacuum vessel, after which the inside of the vacuum vessel is evacuated to ≤10-4 Torr and the copper alloy in the crucible is heated to melt and is held for some time until the molten metal is made uniform. This molten metal is cooled to solidify in the crucible. As a result, the deposition of the low m. p. metal is dispersed as uniformly as possible, and segregation is reduced, whereby the copper alloy that can reduce damages of worked surfaces owing to the separation of deposited particles during machining is obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7516881A JPS57190763A (en) | 1981-05-19 | 1981-05-19 | Casting method for copper alloy by melting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7516881A JPS57190763A (en) | 1981-05-19 | 1981-05-19 | Casting method for copper alloy by melting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57190763A true JPS57190763A (en) | 1982-11-24 |
Family
ID=13568395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7516881A Pending JPS57190763A (en) | 1981-05-19 | 1981-05-19 | Casting method for copper alloy by melting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57190763A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6280239A (en) * | 1985-10-04 | 1987-04-13 | Mitsubishi Alum Co Ltd | Production of alloy |
| US5298293A (en) * | 1990-11-28 | 1994-03-29 | Kabushiki Kaisha Toshiba | Method of manufacturing a rotary anode type X-ray tube |
-
1981
- 1981-05-19 JP JP7516881A patent/JPS57190763A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6280239A (en) * | 1985-10-04 | 1987-04-13 | Mitsubishi Alum Co Ltd | Production of alloy |
| JPH058261B2 (en) * | 1985-10-04 | 1993-02-01 | Mitsubishi Aluminium | |
| US5298293A (en) * | 1990-11-28 | 1994-03-29 | Kabushiki Kaisha Toshiba | Method of manufacturing a rotary anode type X-ray tube |
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