JPS6471504A - Manufacture of aluminum foil for electrolytic capacitor - Google Patents
Manufacture of aluminum foil for electrolytic capacitorInfo
- Publication number
- JPS6471504A JPS6471504A JP8098988A JP8098988A JPS6471504A JP S6471504 A JPS6471504 A JP S6471504A JP 8098988 A JP8098988 A JP 8098988A JP 8098988 A JP8098988 A JP 8098988A JP S6471504 A JPS6471504 A JP S6471504A
- Authority
- JP
- Japan
- Prior art keywords
- stock
- temp
- aluminum foil
- impurities
- cold rolling
- 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
- Metal Rolling (AREA)
Abstract
PURPOSE:To minimize influences of impurities and to form an aluminum foil showing high capacitance from even a low purity ingot by heating a rolled stock to a temp. of >=400 deg.C, rapidly lowering stock temps. in the range of 400-250 deg.C, and performing the final cold rolling. CONSTITUTION:For manufacture of an aluminum foil from an aluminum ingot, a stock is heated a temp. of >=400 deg.C immediately before the final cold rolling, temp. lowering from 400 deg.C to 250 deg.C is rapidly performed, and then the final cold rolling is performed. The reason of heating the stock to a temp. of >=400 deg.C is to obtain the stock where impurities precipitated up to that time uniformly and uniformly enter into solid solution. The reason to avoid the temp. range of 400-250 deg.C is such that the impurities again precipitate and remain in the aluminum foil when the stock is exposed to temps. in that range for a long time, and affect performance of the foil. Hence, the foil showing high capacitance is formed because influences of the impurities are minimized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63080989A JP2639553B2 (en) | 1987-05-28 | 1988-03-31 | Manufacturing method of aluminum foil for electrolytic capacitors |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-133900 | 1987-05-28 | ||
| JP13390087 | 1987-05-28 | ||
| JP63080989A JP2639553B2 (en) | 1987-05-28 | 1988-03-31 | Manufacturing method of aluminum foil for electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6471504A true JPS6471504A (en) | 1989-03-16 |
| JP2639553B2 JP2639553B2 (en) | 1997-08-13 |
Family
ID=26421951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63080989A Expired - Fee Related JP2639553B2 (en) | 1987-05-28 | 1988-03-31 | Manufacturing method of aluminum foil for electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2639553B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581046A (en) * | 1981-06-04 | 1983-01-06 | Sumitomo Light Metal Ind Ltd | Aluminum alloy foil for electrolytic capacitor and its rroduction |
| JPS5925943A (en) * | 1982-08-02 | 1984-02-10 | Sumitomo Light Metal Ind Ltd | Aluminum alloy foil for cathode of electrolytic capacitor and its manufacture |
| JPS63137505A (en) * | 1986-11-27 | 1988-06-09 | Sumitomo Light Metal Ind Ltd | Production of aluminum foil for electrolytic capacitor cathode |
-
1988
- 1988-03-31 JP JP63080989A patent/JP2639553B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581046A (en) * | 1981-06-04 | 1983-01-06 | Sumitomo Light Metal Ind Ltd | Aluminum alloy foil for electrolytic capacitor and its rroduction |
| JPS5925943A (en) * | 1982-08-02 | 1984-02-10 | Sumitomo Light Metal Ind Ltd | Aluminum alloy foil for cathode of electrolytic capacitor and its manufacture |
| JPS63137505A (en) * | 1986-11-27 | 1988-06-09 | Sumitomo Light Metal Ind Ltd | Production of aluminum foil for electrolytic capacitor cathode |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2639553B2 (en) | 1997-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |