US3879273A - Process for the manufacture of aluminium electrodes for electrolytic capacitors - Google Patents
Process for the manufacture of aluminium electrodes for electrolytic capacitors Download PDFInfo
- Publication number
- US3879273A US3879273A US413447A US41344773A US3879273A US 3879273 A US3879273 A US 3879273A US 413447 A US413447 A US 413447A US 41344773 A US41344773 A US 41344773A US 3879273 A US3879273 A US 3879273A
- Authority
- US
- United States
- Prior art keywords
- strip
- manufacture
- electrolytic capacitors
- aluminium
- etched
- 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.)
- Expired - Lifetime
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000003990 capacitor Substances 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000004411 aluminium Substances 0.000 title abstract description 11
- 238000005530 etching Methods 0.000 claims abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OTRAYOBSWCVTIN-UHFFFAOYSA-N OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N Chemical class OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N OTRAYOBSWCVTIN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
Definitions
- the electrodes of an electrolytic capacitor generally consist of a roughened i.e. etched aluminium strip. By roughening the strip an increase in surface area and thereby an increase in capacity is achieved, or for a prescribed capacity a reduction in the dimension of the electrode is achieved.
- Pure aluminium is normally used as starting material for producing etched anode strips and for the production of etched cathode strip pure aluminium or manganese-containing aluminium alloys are used. These materials are cast as ingots with rectangular cross section by the usual continuous casting and permanent mould casting processes. The ingots are usually heated to a rolling temperature between 400C and 500C and rolled down to a plate thickness of 2-10 mm on a hot rolling mill. The plates are cold rolled in several reduction passes down to strip thickness and etched either in this condition or after an additional heat treatment.
- aluminium strip to be etched is cast directly from the molten state as a strip and then rolled to its final thickness.
- Example 1 (Al 99) Capacity in uF/cm?
- a continuous casting of strip has been practised.
- a material is cast directly from the melt in the form of a strip l-40 mm thick and then hot rolled and cold rolled or directly cold rolled to its final thickness.
- a process for the manufacture of aluminum electrodes, for use in electrolytic capacitors comprising the steps of continuously casting an aluminum strip having a thickness of between about 1 mm and about 40 rolling said aluminum strip to its final thickness;
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Continuous Casting (AREA)
- ing And Chemical Polishing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722255309 DE2255309B2 (de) | 1972-11-11 | 1972-11-11 | Verfahren zur herstellung von aluminium-elektroden fuer elektrolytkondensatoren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3879273A true US3879273A (en) | 1975-04-22 |
Family
ID=5861449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US413447A Expired - Lifetime US3879273A (en) | 1972-11-11 | 1973-11-07 | Process for the manufacture of aluminium electrodes for electrolytic capacitors |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3879273A (de) |
| CA (1) | CA997706A (de) |
| CH (1) | CH559964A5 (de) |
| DE (1) | DE2255309B2 (de) |
| FR (1) | FR2206570B1 (de) |
| GB (1) | GB1433767A (de) |
| IT (1) | IT1001684B (de) |
| NL (1) | NL7315242A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049115A2 (de) * | 1980-09-30 | 1982-04-07 | Showa Aluminum Kabushiki Kaisha | Folie aus einer Aluminiumlegierung für Kathoden von Elektrolytkondensatoren |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1935860A (en) * | 1932-08-02 | 1933-11-21 | Sprague Specialties Co | Electrolytic device |
| US2106178A (en) * | 1937-03-23 | 1938-01-25 | Aluminum Co Of America | Electrolytic condenser |
| US2206050A (en) * | 1934-03-21 | 1940-07-02 | Sprague Specialties Co | Electrolytic device |
| US3316164A (en) * | 1964-04-23 | 1967-04-25 | Sprague Electric Co | Etching of aluminum foil |
| US3351442A (en) * | 1966-10-21 | 1967-11-07 | Republic Foil Inc | Treatment of aluminum foil and product produced thereby |
-
1972
- 1972-11-11 DE DE19722255309 patent/DE2255309B2/de not_active Ceased
-
1973
- 1973-10-31 CH CH1531173A patent/CH559964A5/xx not_active IP Right Cessation
- 1973-11-07 NL NL7315242A patent/NL7315242A/xx not_active Application Discontinuation
- 1973-11-07 US US413447A patent/US3879273A/en not_active Expired - Lifetime
- 1973-11-09 CA CA185,439A patent/CA997706A/en not_active Expired
- 1973-11-09 FR FR7339938A patent/FR2206570B1/fr not_active Expired
- 1973-11-09 GB GB5209873A patent/GB1433767A/en not_active Expired
- 1973-11-09 IT IT31145/73A patent/IT1001684B/it active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1935860A (en) * | 1932-08-02 | 1933-11-21 | Sprague Specialties Co | Electrolytic device |
| US2206050A (en) * | 1934-03-21 | 1940-07-02 | Sprague Specialties Co | Electrolytic device |
| US2106178A (en) * | 1937-03-23 | 1938-01-25 | Aluminum Co Of America | Electrolytic condenser |
| US3316164A (en) * | 1964-04-23 | 1967-04-25 | Sprague Electric Co | Etching of aluminum foil |
| US3351442A (en) * | 1966-10-21 | 1967-11-07 | Republic Foil Inc | Treatment of aluminum foil and product produced thereby |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049115A2 (de) * | 1980-09-30 | 1982-04-07 | Showa Aluminum Kabushiki Kaisha | Folie aus einer Aluminiumlegierung für Kathoden von Elektrolytkondensatoren |
| EP0049115A3 (en) * | 1980-09-30 | 1984-03-28 | Showa Aluminium Corporation | Aluminium alloy foil for cathode of electrolytic capacitors |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2255309B2 (de) | 1976-08-05 |
| NL7315242A (de) | 1974-05-14 |
| IT1001684B (it) | 1976-04-30 |
| FR2206570A1 (de) | 1974-06-07 |
| DE2255309A1 (de) | 1974-05-22 |
| CA997706A (en) | 1976-09-28 |
| CH559964A5 (de) | 1975-03-14 |
| GB1433767A (en) | 1976-04-28 |
| FR2206570B1 (de) | 1980-02-08 |
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