CN100445027C - Method for manufacturing aluminium foil of high-voltage anode for electrolytic capacitor - Google Patents
Method for manufacturing aluminium foil of high-voltage anode for electrolytic capacitor Download PDFInfo
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- CN100445027C CN100445027C CNB200610009992XA CN200610009992A CN100445027C CN 100445027 C CN100445027 C CN 100445027C CN B200610009992X A CNB200610009992X A CN B200610009992XA CN 200610009992 A CN200610009992 A CN 200610009992A CN 100445027 C CN100445027 C CN 100445027C
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Abstract
The present invention relates to a manufacture method of aluminium foils for high voltage anodes of electrolytic capacitors, which belongs to the manufacture method of high purity aluminium foils for electrolytic capacitors with high voltage resistance. The present invention solves the problem of unstable quality of anode foils for internal high voltage electrolytic capacitors, dissatisfaction of operating requirements of users and depending on long-term import dependence. The present invention has the procedures that the charge mixture is according to the proportionality of a high voltage aluminum foil of the electrolytic capacitor; mixed raw materials are smelted for 5 to 12 h under the temperature conditions of 720 to 750 DEG C, then, the mixed raw materials are refined for 10 to 15 min under the temperature conditions of 720 to 730 DEG C, and finally, the mixed raw materials are made into alloy cast ingot according to a semicontinuous casting method; the present invention is in a uniform fire treatment for 22 to 27 h under the temperature conditions of 480 to 530 DEG C; hot rolling is carried out after uniform fire treatment; the present invention is in cold rolling to a middle thickness, then, anneal is carried out under the temperature conditions of 380 to 420 DEG C, next, the present invention is in the cold rolling into a final product thickness of 0.09 to 0.11mm, and finally, the present invention is cut into a final product width. The present invention increases the content of cube structures in the aluminium foil, so the voltage rating and electric capacity of the electrolytic capacitor are enhanced, the product quality is enhanced, and import can be replaced by the present invention.
Description
Technical field
The present invention relates to a kind of manufacture method of withstand voltage higher high pure aluminium foil for electrolytic capacitor.
Background technology
Original anode foil used for high-voltage electrolysis capacitor, when rated voltage surpassed 200 volts, quality requirement was higher, and the production difficulty is bigger, though domestic have the minority manufacturer production, because the quality instability does not satisfy user's instructions for use, the long-term dependence on import of having to.
Summary of the invention
In order to solve domestic anode foil used for high-voltage electrolysis capacitor quality instability, do not satisfy user's instructions for use, the problem of the long-term dependence on import of having to the invention provides the manufacture method of a kind of electrolytic capacitor high pressure with aluminium foil.The present invention improves the content of cubic texture in the aluminium foil tissue, thereby improves the rated voltage and the capacitance of electrolytic capacitor, improve the quality of products, and then the substituting import one material.Aluminium foil for high-voltage anode of electrolytic capacitor of the present invention is according to the ratio of weight and number meter, and it is by Al:100 part, Cu:0.0037～0.0048 part, Fe :≤0.0012 part, Si :≤0.0012 part, Mg :≤0.005 part, Mn :≤≤ 0.005 part, Zn :≤0.005 part, Ti :≤0.005 part, Ni: form for≤0.005 part.Electrolytic capacitor high pressure of the present invention carries out according to following steps with the manufacture method of aluminium foil: one, according to the ratio batching of electrolytic capacitor high pressure with aluminium foil; Two, raw material prepares back melting 5～12h under 720～750 ℃ temperature conditions, and refining 10～15min under 720～730 ℃ temperature conditions makes alloy cast ingot by the semi-continuous casting method at last then; Three, with the alloy cast ingot all fiery 22～27h of processing under 480～530 ℃ temperature conditions that makes in the step 2; Four, all carry out hot rolling behind the fire, under 420～500 ℃ temperature, heat 16～22h before the hot rolling, be hot-rolled down to the big volume of 9.0～10.0mm then; Five, the rolling mill practice by rafifinal 1A99 alloy foil is cold-rolled to interior thickness, anneals under 380～420 ℃ temperature conditions then, is cold-rolled to finished product thickness 0.09～0.11mm again, is trimmed to finished width at last, that is: 9.0
± 0.6Mm → interior thickness → intermediate annealing → 0.09～0.11mm, the finished product of used in electrolytic capacitor high voltage anode foil is sheared according to current technology by thickness.
The present invention has studied the influence of various technological factors to foil annealing back tissue, primary study the purity of aluminium, annealing schedule, hot-rolled temperature, cold rolling and intermediate annealing to final annealing after foil form the influence of cubic texture, thereby satisfy the instructions for use of anode foil used for high-voltage electrolysis capacitor.The invention has the advantages that: the purity percentage of (1) aluminium is controlled at 99.99%, obtain a large amount of recrystallized structure, the content of Cu is controlled between 0.0037～0.0048, Cu distributes as fine particle in rafifinal, can form examining of tunnel-like etch pit, Fe, the Si tolerance surpasses 30ppm, can form thick compound, cause forming thick etch pit, reduce surface area, static capacity descends, (its electric impurity exceeds standard to reduce the insulating properties of electrolytic capacitor simultaneously, can hinder the formation of lattice direction 100, postpone the carrying out of crystallization again, unfavorable to forming recrystallization texture); (2) ingot casting carries out all fire and handles under 480～530 ℃ temperature conditions, can utilize under the high temperature element in the diffusion of intracrystalline, makes composition and organizes more evenly, helps the homogeneous corrosion of foil; (3) through 420～500 ℃ high temperature hot rolling, help forming recrystallization texture, promote the formation of cold rolling back recrystallization texture; (4) carry out intermediate annealing in the cold-rolled process, help the ratio that cold rolling back forms lattice direction (100).
The specific embodiment
The specific embodiment one: the used in electrolytic capacitor high voltage anode foil of present embodiment is according to the ratio of weight and number meter, and it is by Al:100 part, Fe :≤0.0012 part, Si :≤0.0012 part, Cu:0.0037～0.0048 part, Mg :≤0.005 part, Mn :≤0.005 part, Zn :≤0.005 part, Ti :≤0.005 part, Ni: form for≤0.005 part.
The specific embodiment two: what present embodiment and the specific embodiment one were different is, according to the ratio of weight and number meter, the used in electrolytic capacitor high voltage anode foil is by Al:100 part, Fe :≤0.0012 part, Si :≤0.0012 part, Cu:0.0037 part, Mg; ≤ 0.005 part, Mn :≤0.005 part, Zn :≤0.005 part, Ti :≤0.005 part, Ni :≤0.005 part of composition.
The specific embodiment three: what present embodiment and the specific embodiment one were different is, according to the ratio of weight and number meter, the used in electrolytic capacitor high voltage anode foil is by Al:100 part, Fe:.≤0.0012 part, Si :≤0.0012 part, Cu:0.0042 part, Mg :≤0.005 part, Mn :≤0.005 part, Zn :≤0.005 part, Ti :≤0.005 part, Ni: form for≤0.005 part.
The specific embodiment four: what present embodiment and the specific embodiment one were different is, according to the ratio of weight and number meter, the used in electrolytic capacitor high voltage anode foil is by Al:100 part, Fe :≤0.0012 part, Si :≤0.0012 part, Cu:0.0048 part, Mg :≤0.005 part, Mn :≤0.005 part, Zn :≤0.005 part, Ti :≤0.005 part, Ni: form for≤0.005 part.
The specific embodiment five: what present embodiment and the specific embodiment one were different is that according to the ratio of weight and number meter, each proportion of raw materials sees Table 1 in the used in electrolytic capacitor high voltage anode foil.
Table 1:
| Al | Fe | Si | Cu | Mg | Mn | Zn | Ti | Ni |
| 100 | 0.0012 | 0.0012 | 0.0038 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 |
| 100 | 0.0008 | 0.0004 | 0.0043 | 0.003 | - | - | 0.002 | 0.001 |
| 100 | 0.0004 | 0.0004 | 0.0047 | - | 0.001 | 0.003 | - | 0.003 |
| 100 | 0.0004 | 0.0007 | 0.0040 | 0.001 | 0.003 | 0.001 | 0.003 | - |
The specific embodiment six: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment is made according to following steps: be Al:100 part, Cu:0.0037～0.0048 part, Fe according to ratio of weight and number one :≤0.0012 part, Si :≤0.0012 part, Mg :≤0.005 part, Mn :≤0.005 part, Zn :≤0.005 part, Ti :≤0.005 part, Ni :≤0.005 part ratio batching; Two, raw material prepares back melting 5～12h under 720～750 ℃ temperature conditions, and refining 10～15min under 720～730 ℃ temperature conditions makes alloy cast ingot by the semi-continuous casting method at last then; Three, with the alloy cast ingot all fiery 22～27h of processing under 480～530 ℃ temperature conditions that makes in the step 2; Four, all carry out hot rolling behind the fire, under 420～500 ℃ temperature, heat 16～22h before the hot rolling, be hot-rolled down to 9.0 then
± 0.6The big volume of mm; Five, the rolling mill practice by rafifinal 1A99 alloy foil is cold-rolled to interior thickness, anneals under 380～420 ℃ temperature conditions then, is cold-rolled to finished product thickness 0.09～0.11mm again, is trimmed to finished width at last, that is: 9.0
± 0.6Mm → interior thickness → intermediate annealing → 0.09～0.11mm, the finished product of used in electrolytic capacitor high voltage anode foil is sheared according to current technology by thickness.
The specific embodiment seven: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 5h under 720～750 ℃ temperature in the step 2, refining 10min under 720～730 ℃ temperature handles 22h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 16h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
The specific embodiment eight: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 6h under 720～750 ℃ temperature in the step 2, refining 11min under 720～730 ℃ temperature handles 23h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 17h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
The specific embodiment nine: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 7.5h under 720～750 ℃ temperature in the step 2, refining 11.5min under 720～730 ℃ temperature handles 23.5h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 18.5h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
The specific embodiment ten: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 8h under 720～750 ℃ temperature in the step 2, refining 12min under 720～730 ℃ temperature handles 24h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 19h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
The specific embodiment 11: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 9.5h under 720～750 ℃ temperature in the step 2, refining 13min under 720～730 ℃ temperature handles 25h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 20h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
The specific embodiment 12: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 10.5h under 720～750 ℃ temperature in the step 2, refining 13.5min under 720～730 ℃ temperature handles 25.5h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 20.5h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
The specific embodiment 13: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 11h under 720750 ℃ temperature in the step 2, refining 14min under 720～730 ℃ temperature handles 26h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 21h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
The specific embodiment 14: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 11.5h under 720～750 ℃ temperature in the step 2, refining 14.5min under 720～730 ℃ temperature handles 26.5h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 21.5h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
The specific embodiment 15: the manufacture method of the used in electrolytic capacitor high voltage anode foil of present embodiment and the difference of the specific embodiment six are that raw material prepares back melting 12h under 720～750 ℃ temperature in the step 2, refining 15min under 720～730 ℃ temperature handles 27h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 22h before the hot rolling in the step 4.Other composition is identical with the specific embodiment six with step.
Claims (4)
1, the manufacture method of aluminium foil for high-voltage anode of electrolytic capacitor is characterized in that described method carries out according to following steps: one, the electrolytic capacitor high pressure is Al:100 part, Cu:0.0037～0.0048 part, Fe with aluminium foil according to ratio of weight and number :≤0.0012 part, Si :≤0.0012 part, Mg :≤0.005 part, Mn :≤0.005 part, Zn :≤0.005 part, Ti :≤0.005 part, Ni :≤0.005 part ratio batching; Two, raw material prepares back melting 5～12h under 720～750 ℃ temperature conditions, and refining 10～15min under 720～730 ℃ temperature conditions makes alloy cast ingot by the semi-continuous casting method at last then; Three, with the alloy cast ingot all fiery 22～27h of processing under 480～530 ℃ temperature conditions that makes in the step 2; Four, all carry out hot rolling behind the fire, under 420～500 ℃ temperature, heat 16～22h before the hot rolling, be hot-rolled down to 9.0 then
± 0.6The big volume of mm; Five, the rolling mill practice by rafifinal 1A99 alloy foil is cold-rolled to interior thickness, anneals under 380～420 ℃ temperature conditions then, is cold-rolled to finished product thickness 0.09～0.11mm again, is trimmed to finished width at last.
2, the manufacture method of aluminium foil for high-voltage anode of electrolytic capacitor according to claim 1, it is characterized in that raw material prepares back melting 5～7.5h under 720～750 ℃ temperature in the step 2, refining 10～11.5min under 720～730 ℃ temperature handles 22～23.5h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 16～18.5h before the hot rolling in the step 4.
3, the manufacture method of aluminium foil for high-voltage anode of electrolytic capacitor according to claim 1, it is characterized in that raw material prepares back melting 8～10.5h under 720～750 ℃ temperature in the step 2, refining 12～13.5min under 720～730 ℃ temperature handles 24～25.5h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 19～20.5h before the hot rolling in the step 4.
4, the manufacture method of aluminium foil for high-voltage anode of electrolytic capacitor according to claim 1, it is characterized in that raw material prepares back melting 11～12h under 720～750 ℃ temperature in the step 2, refining 14～15min under 720～730 ℃ temperature handles 26～27h with alloy cast ingot equal fire under 480～530 ℃ temperature in the step 3 then; Under 420～500 ℃ temperature, heat 21～22h before the hot rolling in the step 4.
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| CNB200610009992XA CN100445027C (en) | 2006-04-29 | 2006-04-29 | Method for manufacturing aluminium foil of high-voltage anode for electrolytic capacitor |
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| CNB200610009992XA CN100445027C (en) | 2006-04-29 | 2006-04-29 | Method for manufacturing aluminium foil of high-voltage anode for electrolytic capacitor |
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| CN100445027C true CN100445027C (en) | 2008-12-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101713033B (en) * | 2009-11-23 | 2012-09-26 | 山东南山铝业股份有限公司 | Production technology for casting aluminum foil |
| CN102978483B (en) * | 2012-11-30 | 2016-04-06 | 苏州有色金属研究院有限公司 | Aluminum alloy foil for lithium-ion anode current collector and manufacture method thereof |
| CN104131198B (en) * | 2014-08-01 | 2018-07-24 | 内蒙古中拓铝业股份有限责任公司 | Rare-earth electric aluminium foil |
| CN106521373B (en) * | 2016-12-22 | 2018-08-03 | 新疆众和股份有限公司 | A kind of granule surface contral technique of anodic oxidation aluminium alloy |
| CN110938768B (en) * | 2019-11-30 | 2021-01-22 | 河南科源电子铝箔有限公司 | High-voltage electronic aluminum foil without generation of coarse grains and preparation method thereof |
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Effective date of registration: 20190214 Address after: 401326 Datang, Xipeng Town, Jiulongpo District, Chongqing Patentee after: Chongqing Chinalco Huaxi Aluminium Industry Co., Ltd. Address before: 150060 Xinjiang Street, Pingfang District, Harbin City, Heilongjiang Province Patentee before: Dongbei Light Alloy Co., Ltd. |
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Effective date of registration: 20210512 Address after: No. 488, west section of Xueyuan Road, Xindu District, Chengdu, Sichuan 610500 Patentee after: Medium aluminum foil Co.,Ltd. Address before: 401326 Datang, Xipeng Town, Jiulongpo District, Chongqing Patentee before: CHONGQING ZHONGLYU HUAXI ALUMINIUM Co.,Ltd. |
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