JP2907392B2 - Manufacturing method of aluminum foil for cathode of electrolytic capacitor - Google Patents
Manufacturing method of aluminum foil for cathode of electrolytic capacitorInfo
- Publication number
- JP2907392B2 JP2907392B2 JP1393890A JP1393890A JP2907392B2 JP 2907392 B2 JP2907392 B2 JP 2907392B2 JP 1393890 A JP1393890 A JP 1393890A JP 1393890 A JP1393890 A JP 1393890A JP 2907392 B2 JP2907392 B2 JP 2907392B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- aluminum foil
- temperature
- cathode
- ingot
- 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 - Fee Related
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims description 66
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 64
- 239000011888 foil Substances 0.000 title claims description 32
- 239000003990 capacitor Substances 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000137 annealing Methods 0.000 claims description 16
- 238000000265 homogenisation Methods 0.000 claims description 13
- 238000005098 hot rolling Methods 0.000 claims description 13
- 238000005097 cold rolling Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000005530 etching Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 102220253765 rs141230910 Human genes 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Description
本発明は、静電容量の高い陰極を得ることのできる電
解コンデンサ陰極用アルミニウム箔の製造方法に関する
ものである。The present invention relates to a method for manufacturing an aluminum foil for a cathode of an electrolytic capacitor capable of obtaining a cathode having a high capacitance.
従来より、電解コンデンサ陰極用アルミニウム箔を製
造する方法としては、一般のアルミニウム箔の製造方法
と同様の方法が採用されていた。即ち、アルミニウム鋳
塊を面削，均質化処理，熱間圧延，中間焼鈍及び冷間圧
延して製造していた。 しかし、このようにして得られた電解コンデンサ陰極
用アルミニウム箔は、エッチング処理してコンデンサの
陰極として用いたときに、静電容量が低いという欠点が
あった。これは、アルミニウム箔中に不純物（FeやSi
等）が析出若しくは晶出しており、これがエッチング時
に局部電池のカソードとして働き、アルミニウム箔表面
に過溶解を生じさせるからである。過溶解が生じると、
アルミニウム箔表面に大きな孔が形成されて、表面積の
十分な拡大が図れず、高い静電容量の陰極が得られない
のである。 この欠点を除去するためには、アルミニウム箔中に不
純物の析出等が生じないようにすればよい。従って、従
来よりアルミニウム鋳塊を高温で均質化処理して不純物
を固溶させたり、また固溶した不純物が析出しないよう
に、熱間圧延中に析出する温度領域を速く通過させて圧
延したりしている。しかしながら、それでもなお十分に
静電容量を高めることができなかった。Conventionally, as a method of manufacturing an aluminum foil for a cathode of an electrolytic capacitor, a method similar to a method of manufacturing a general aluminum foil has been adopted. That is, the aluminum ingot is manufactured by facing, homogenizing, hot rolling, intermediate annealing and cold rolling. However, the thus obtained aluminum foil for a cathode of an electrolytic capacitor has a disadvantage that the capacitance is low when used as a cathode of a capacitor after etching. This is because impurities (Fe or Si) are contained in the aluminum foil.
Etc.) are precipitated or crystallized, and this acts as a cathode of a local cell at the time of etching and causes overdissolution on the aluminum foil surface. When overdissolution occurs,
A large hole is formed on the surface of the aluminum foil, the surface area cannot be sufficiently increased, and a cathode having a high capacitance cannot be obtained. In order to eliminate this defect, it is sufficient to prevent the precipitation of impurities and the like in the aluminum foil. Therefore, conventionally, the aluminum ingot is homogenized at a high temperature to solid-dissolve impurities, or the aluminum ingot is rolled by rapidly passing through a temperature region where it is precipitated during hot rolling so that the solid-solution impurities do not precipitate. doing. However, it was still not possible to sufficiently increase the capacitance.
本発明者等は、上記の原因を究明すべく、種々検討し
た結果、以下の如き知見を得た。即ち、アルミニウム鋳
塊のアルミニウム純度にもよるが、アルミニウム純度が
高いと均質化処理により却って析出物等が生じること、
及び熱間圧延終了後に急冷しても、その際の材料の寸法
が大きいと、材料の温度は急速に低下せず、析出物等が
生じること、という知見を得たのである。 そこで、本発明はこの知見に基づき、ある特定のアル
ミニウム鋳塊を用い且つある特定の方法で電解コンデン
サ用アルミニウム箔を製造することにより、エッチング
時に過溶解が生じにくく、静電容量の高い陰極を得るこ
とができる電解コンデンサ用アルミニウム箔を提供しよ
うというものである。The present inventors have conducted various studies in order to investigate the above cause, and have obtained the following findings. That is, although it depends on the aluminum purity of the aluminum ingot, if the aluminum purity is high, precipitates and the like are generated by the homogenization treatment,
In addition, it has been found that, even if the material is rapidly cooled after the completion of the hot rolling, if the size of the material at that time is large, the temperature of the material does not decrease rapidly and precipitates and the like are generated. Therefore, based on this finding, the present invention uses a specific aluminum ingot and manufactures an aluminum foil for an electrolytic capacitor by a specific method, so that overmelting hardly occurs at the time of etching and a cathode having a high capacitance is used. An object of the present invention is to provide an aluminum foil for an electrolytic capacitor which can be obtained.
即ち、本発明は基本的には、アルミニウム鋳塊を、面
削工程，均質化処理工程，熱間圧延工程，中間焼鈍工程
及び冷間圧延工程に通してアルミニウム箔を得る方法に
おいて、前記アルミニウム鋳塊としてある特定の組成の
ものを用い、前記均質化処理工程及び中間焼鈍工程を省
略すると共に温度250℃以下で熱間圧延を行うことを特
徴とする電解コンデンサ陰極用アルミニウム箔の製造方
法に関するものである。 本発明において使用する第一のアルミニウム鋳塊の組
成は、Fe0.010〜0.070％,Si0.010〜0.100％,Al99.7％以
上からなるものである。ここで、FeやSiの量が0.010％
未満になると、得られるアルミニウム箔の強度が低く、
実用可能な陰極箔が得られないため、好ましくない。ま
た、Feの量が0.070％を超えたり、或いはSiの量が0.100
％を超えると、本発明の製造方法においても析出物等が
多量に生じ、静電容量の高い陰極が得られなくなるた
め、好ましくない。また、アルミニウム純度は、低温25
0℃以下でも圧延によって十分に塑性加工できる程度に
高くした。なお、アルミニウム鋳塊中に、Fe及びSiの外
に不可避的不純物（例えば、ZnやMg等）が若干量添加，
含有されていてもよいことは勿論である。 また、本発明において使用する第二のアルミニウム鋳
塊の組成は、Fe0.010〜0.020％,Si0.010〜0.250％,Cu0.
2〜0.5％,Al99.0％以上からなるものである。この第二
のアルミニウム鋳塊は、第一のアルミニウム鋳塊と異な
って、Cuが添加されている。Cuを一定量添加すると、基
地の電位が高くなって、エッチングが良好に行われると
共に、基地にCuがよく固溶して材料の強度向上が図れ
る。即ち,Feが0.200％を超えたり、或いはSiが0.250％
を超えたりすると、析出物等が生じやすくなり、好まし
くない。また、FeやSiの量を一定量以上としたのは、第
一のアルミニウム鋳塊の場合と同様の理由である。な
お、Cuが0.2％未満であると、強度向上の効果があまり
現れず、またCuが0.5％を超えると、陰極箔としての耐
久性が劣ることや、エッチング形態が容量の出にくい形
態になる可能性があるため、好ましくない。また、アル
ミニウム純度も、低温即ち250℃以下でも圧延によって
十分に塑性変形しうる程度に高くした。なお、第二のア
ルミニウム鋳塊中にも、Fe,Si及びCuの外に不可避的不
純物（例えば、ZnやMg等）が若干量混入していてもよい
ことは勿論である。 また、本発明で使用するこれらのアルミニウム鋳塊の
寸法は任意に決定しうる事項であるが、比較的寸法の大
きい鋳塊を使用することができ、一般的には厚さ100mm
以上、好ましくは400mm程度の鋳塊を用いることができ
る。 次に、これらのアルミニウム鋳塊に均質化処理を施す
ことなく、圧延を施す。本発明で使用するアルミニウム
鋳塊の場合、アルミニウム純度が比較的高いため、均質
化処理すると却って析出物等が生じるからである。本発
明においては、いずれの圧延工程でも鋳塊若しくは厚板
の材料温度を250℃以下にする必要がある。圧延中の材
料温度が250℃を超えると、圧延中に析出物が生じる恐
れがあるからである。 この後、中間焼鈍を施すことなく、冷間圧延を施す。
中間焼鈍も250℃を超える温度で行われるため、析出物
等が生じるからである。しかしながら、第二のアルミニ
ウム鋳塊を使用した場合には、添加したCuをよく固溶さ
せるため、中間焼鈍を施す。この場合の中間焼鈍の条件
は、板厚さ6mm以下，温度200℃以上，時間５時間以上と
することが必要である。板厚が6mmを超えると、材料の
冷却が緩やかになって、析出物等が生じる恐れがあるの
で好ましくない。また、温度が200℃以下であったり、
或いは時間が５時間未満であると、焼鈍の効果が現れな
いので好ましくない。この中間焼鈍によって、材料が柔
らかくなり圧延しやすくなり、またCuの固溶が十分にな
る。そして、この後冷間圧延が施される。冷間圧延は、
任意の回数行われ、アルミニウム箔が所望の厚さになる
ようにする。 以上のようにして、電解コンデンサ陰極用アルミニウ
ム箔が得られ、これをエッチング処理して陰極箔として
使用するのである。That is, the present invention basically provides a method of obtaining an aluminum foil by passing an aluminum ingot through a facing step, a homogenization treatment step, a hot rolling step, an intermediate annealing step and a cold rolling step. The present invention relates to a method for producing an aluminum foil for a cathode of an electrolytic capacitor, characterized by using a specific mass as a lump, omitting the homogenization treatment step and the intermediate annealing step, and performing hot rolling at a temperature of 250 ° C. or less. It is. The composition of the first aluminum ingot used in the present invention is composed of 0.010 to 0.070% of Fe, 0.010 to 0.100% of Si, and 99.7% or more of Al. Here, the amount of Fe or Si is 0.010%
If less than, the strength of the obtained aluminum foil is low,
It is not preferable because a practical cathode foil cannot be obtained. Further, the amount of Fe exceeds 0.070%, or the amount of Si is 0.100%.
%, It is not preferable because a large amount of precipitates and the like are generated even in the production method of the present invention, and a cathode having high capacitance cannot be obtained. In addition, aluminum purity, low temperature 25
Even at 0 ° C. or lower, the temperature was set high enough to allow sufficient plastic working by rolling. In addition, in addition to Fe and Si, some inevitable impurities (for example, Zn and Mg) are added to the aluminum ingot.
Of course, it may be contained. Further, the composition of the second aluminum ingot used in the present invention is Fe 0.010 to 0.020%, Si 0.010 to 0.250%, Cu0.
It consists of 2 to 0.5% and 99.0% or more of Al. The second aluminum ingot differs from the first aluminum ingot in that Cu is added. When a certain amount of Cu is added, the potential of the matrix increases, so that the etching is favorably performed, and the solid solution of Cu in the matrix improves the strength of the material. That is, Fe exceeds 0.200% or Si is 0.250%
If it exceeds, precipitates and the like are likely to be generated, which is not preferable. The reason why the amount of Fe or Si is set to a certain amount or more is the same as in the case of the first aluminum ingot. If the Cu content is less than 0.2%, the effect of improving the strength is not so much exhibited, and if the Cu content exceeds 0.5%, the durability as a cathode foil is inferior and the etching form becomes a form in which the capacity is hardly produced. It is not preferable because there is a possibility. Also, the aluminum purity was increased to such an extent that it could be sufficiently plastically deformed by rolling even at a low temperature, that is, 250 ° C. or lower. In addition, it goes without saying that a small amount of unavoidable impurities (for example, Zn and Mg) may be mixed in the second aluminum ingot in addition to Fe, Si and Cu. The dimensions of these aluminum ingots used in the present invention are items that can be arbitrarily determined, but relatively large ingots can be used, and generally have a thickness of 100 mm.
As described above, preferably, an ingot of about 400 mm can be used. Next, rolling is performed on these aluminum ingots without performing homogenization processing. This is because, in the case of the aluminum ingot used in the present invention, since the aluminum purity is relatively high, precipitates and the like are generated when the homogenization treatment is performed. In the present invention, in any rolling step, the material temperature of the ingot or the thick plate needs to be 250 ° C. or less. If the material temperature during rolling exceeds 250 ° C., a precipitate may be generated during rolling. Thereafter, cold rolling is performed without performing intermediate annealing.
This is because the intermediate annealing is also performed at a temperature exceeding 250 ° C., so that precipitates and the like are generated. However, when the second aluminum ingot is used, intermediate annealing is performed to make the added Cu form a solid solution. In this case, the conditions of the intermediate annealing need to be such that the plate thickness is 6 mm or less, the temperature is 200 ° C. or more, and the time is 5 hours or more. If the plate thickness exceeds 6 mm, the cooling of the material becomes slow and precipitates and the like may be generated, which is not preferable. In addition, the temperature is 200 ℃ or less,
Alternatively, if the time is less than 5 hours, the effect of annealing does not appear, which is not preferable. By this intermediate annealing, the material becomes soft and easy to roll, and the solid solution of Cu becomes sufficient. Then, cold rolling is performed thereafter. Cold rolling is
This is performed an arbitrary number of times so that the aluminum foil has a desired thickness. As described above, an aluminum foil for a cathode of an electrolytic capacitor is obtained, which is etched and used as a cathode foil.
実施例１ 第１表に示す組成を持つ厚さ400mmの第一のアルミニ
ウム鋳塊を、250℃に予熱した後、第２表に示した温度
条件で熱間粗圧延して厚さ20〜25mmに圧延し、続いて第
２表に示した温度条件で熱間仕上圧延して厚さ7mmに圧
延してコイル状に巻き上げた。この後、コイル状に巻き
上げたアルミニウム板を、巻き戻して冷間圧延し、厚さ
20μｍ又は50μｍのアルミニウム箔とした。このアルミ
ニウム箔の静電容量を測定し、第２表に示した。 以上の結果から実施例と比較例を比較すると、高温で
均質化処理するよりしない方が（比較例１−Ａ）、250
℃を超える温度で熱間圧延を開始するより、250℃以下
で開始した方が（比較例１−A,1−B,1−Ｃ）、静電容量
が向上していることが判る。また、その他の条件が同一
でも、アルミニウム鋳塊の組成中FeやSiの量が多すぎて
も（比較例１−Ｄ）、静電容量が低下していることが判
る。 実施例２ 第３表に示す組成を持つ厚さ400mmの第二のアルミニ
ウム鋳塊を、250℃に予熱した後、第４表に示した温度
条件で粗圧延して厚さ20〜25mmに圧延し、続いて第４表
に示した温度条件で厚さ7mmに圧延してコイル状に巻き
上げた。この後、冷間で箔圧延し、厚さ20μｍ又は50μ
ｍのアルミニウム箔とした。このアルミニウム箔の静電
容量を測定し、第５表に示した。なお、中間焼鈍を行う
場合は、冷間圧延の途中で（板厚が0.3〜6mmで）行っ
た。 以上の結果から実施例と比較例を比較する。高温で均
質化処理するよりしない方が（比較例２−Ａ）、250℃
を超える温度で熱間圧延を開始するより、250℃以下で
開始した方が（比較例２−A,2−B,2−Ｃ）、静電容量が
向上していることが判る。また、その他の条件が同一で
も、アルミニウム鋳塊の組成中Feの量が多すぎても（比
較例２−Ｄ）、静電容量が低下していることが判る。Example 1 A first aluminum ingot having a composition shown in Table 1 and having a thickness of 400 mm was preheated to 250 ° C, and then hot rough-rolled under the temperature conditions shown in Table 2 to a thickness of 20 to 25 mm. Then, it was hot-finished and rolled to a thickness of 7 mm under the temperature conditions shown in Table 2 and wound up in a coil shape. Thereafter, the aluminum plate wound up into a coil shape is rewound and cold-rolled, and the thickness is reduced.
An aluminum foil of 20 μm or 50 μm was used. The capacitance of this aluminum foil was measured and is shown in Table 2. From the above results, comparing the example with the comparative example, it was found that the case where the homogenization treatment was not performed at a high temperature (Comparative Example 1-A) was
It can be seen that, when hot rolling is started at a temperature of 250 ° C. or less (Comparative Examples 1-A, 1-B, 1-C), the capacitance is improved as compared with the case where hot rolling is started at a temperature exceeding 0 ° C. In addition, even if the other conditions were the same, even when the amount of Fe or Si in the composition of the aluminum ingot was too large (Comparative Example 1-D), it was found that the capacitance was reduced. Example 2 A 400 mm thick second aluminum ingot having a composition shown in Table 3 was preheated to 250 ° C., and then roughly rolled under the temperature conditions shown in Table 4 to a thickness of 20 to 25 mm. Then, it was rolled to a thickness of 7 mm under the temperature conditions shown in Table 4 and wound up into a coil. After this, cold rolled foil, thickness 20μm or 50μ
m of aluminum foil. The capacitance of this aluminum foil was measured and is shown in Table 5. In addition, when performing intermediate annealing, it was performed in the middle of cold rolling (with a sheet thickness of 0.3 to 6 mm). The example and the comparative example are compared based on the above results. Higher temperature than homogenization treatment (Comparative Example 2-A), 250 ° C
It can be seen that, when hot rolling is started at a temperature of 250 ° C. or less (Comparative Example 2-A, 2-B, 2-C), the capacitance is improved as compared with the case where hot rolling is started at a temperature exceeding. In addition, even when the other conditions were the same, even when the amount of Fe in the composition of the aluminum ingot was too large (Comparative Example 2-D), it was found that the capacitance was reduced.
以上説明したように、本発明は、ある特定の組成を持
つアルミニウム鋳塊を用いて、ある特定の方法で電解コ
ンデンサ陰極用アルミニウム箔を製造するというもので
ある。このようにして得られた電解コンデンサ陰極用ア
ルミニウム箔を用いて、エッチング処理し陰極を得る
と、静電容量の高い陰極箔が得られるという効果を奏す
るものである。 また、本発明に係る方法は、アルミニウム鋳塊の大き
さを問わずに使用できるため、比較的大きな鋳塊を使用
した場合には、大量生産が可能になり、電解コンデンサ
陰極用アルミニウム箔の価格が低廉になるという効果を
奏する。As described above, the present invention is to produce an aluminum foil for a cathode of an electrolytic capacitor by a specific method using an aluminum ingot having a specific composition. When the cathode is obtained by etching using the thus obtained aluminum foil for a cathode of an electrolytic capacitor, a cathode foil having a high capacitance can be obtained. Also, since the method according to the present invention can be used regardless of the size of the aluminum ingot, when a relatively large ingot is used, mass production becomes possible, and the price of the aluminum foil for the electrolytic capacitor cathode is reduced. Has the effect of being cheap.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｈ０１Ｇ 9/055 Ｈ０１Ｇ 9/04 ３３１ (56)参考文献 特開 昭57−50421（ＪＰ，Ａ) 特開 平３−166344（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C22F 1/04 - 1/057 C22C 21/00 - 21/18 H01G 9/04 B21B 1/40,3/00 ────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification symbol FI H01G 9/055 H01G 9/04 331 (56) References JP-A-57-50421 (JP, A) JP-A-3-166344 ( JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C22F 1/04-1/057 C22C 21/00-21/18 H01G 9/04 B21B 1/40, 3/00
Claims (3)
理工程，熱間圧延工程，中間焼鈍工程及び冷間圧延工程
に通してアルミニウム箔を得る方法において、前記アル
ミニウム鋳塊としてFe0.010〜0.070％,Si0.010〜0.100
％,Al99.7％以上の組成のものを用い、前記均質化処理
工程及び中間焼鈍工程を省略すると共に温度250℃以下
で圧延を行うことを特徴とする電解コンデンサ陰極用ア
ルミニウム箔の製造方法。1. A method of obtaining an aluminum foil by passing an aluminum ingot through a facing step, a homogenization treatment step, a hot rolling step, an intermediate annealing step and a cold rolling step, wherein the aluminum ingot is Fe0.010 ~ 0.070%, Si0.010 ~ 0.100
% And a composition of 99.7% or more of Al, wherein the homogenization step and the intermediate annealing step are omitted, and rolling is performed at a temperature of 250 ° C. or less.
理工程，熱間圧延工程，中間焼鈍工程及び冷間圧延工程
に通してアルミニウム箔を得る方法において、前記アル
ミニウム鋳塊としてFe0.010〜0.020％,Si0.010〜0.250
％,Cu0.2〜0.5％,Al99.0％以上の組成のものを用い、前
記均質化処理工程及び中間焼鈍工程を省略すると共に温
度250℃以下で圧延を行うことを特徴とする電解コンデ
ンサ陰極用アルミニウム箔の製造方法。2. A method for obtaining an aluminum ingot by passing an aluminum ingot through a facing step, a homogenization treatment step, a hot rolling step, an intermediate annealing step and a cold rolling step, wherein the aluminum ingot is Fe0.010 ~ 0.020%, Si0.010 ~ 0.250
%, Cu 0.2-0.5%, Al 99.0% or more, wherein the homogenization step and the intermediate annealing step are omitted and rolling is performed at a temperature of 250 ° C. or less. Of manufacturing aluminum foil for aluminum.
理工程，熱間圧延工程，中間焼鈍工程及び冷間圧延工程
に通してアルミニウム箔を得る方法において、前記アル
ミニウム鋳塊としてFe0.010〜0.200％,Si0.010〜0.250
％,Cu0.2〜0.5％,Al99.0％以上の組成のものを用い、前
記均質化処理工程を省略すると共に温度250℃以下で熱
間圧延を行い、且つ前記中間焼鈍の条件を板厚6mm以
下，温度200℃以上，時間５時間以上とすることを特徴
とする電解コンデンサ陰極用アルミニウム箔の製造方
法。3. A method for obtaining an aluminum foil by passing an aluminum ingot through a facing step, a homogenization step, a hot rolling step, an intermediate annealing step and a cold rolling step, wherein the aluminum ingot is Fe0.010 ~ 0.200%, Si 0.010 ~ 0.250
%, Cu 0.2-0.5%, Al 99.0% or more, omit the homogenization step, perform hot rolling at a temperature of 250 ° C. or less, and set the conditions of the intermediate annealing to A method for producing an aluminum foil for an electrolytic capacitor cathode, wherein the temperature is 6 mm or less, the temperature is 200 ° C. or more, and the time is 5 hours or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1393890A JP2907392B2 (en) | 1990-01-24 | 1990-01-24 | Manufacturing method of aluminum foil for cathode of electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1393890A JP2907392B2 (en) | 1990-01-24 | 1990-01-24 | Manufacturing method of aluminum foil for cathode of electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03291363A JPH03291363A (en) | 1991-12-20 |
| JP2907392B2 true JP2907392B2 (en) | 1999-06-21 |
Family
ID=11847145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1393890A Expired - Fee Related JP2907392B2 (en) | 1990-01-24 | 1990-01-24 | Manufacturing method of aluminum foil for cathode of electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2907392B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5791719B2 (en) * | 2011-07-29 | 2015-10-07 | 株式会社Uacj | Aluminum alloy foil for electrode current collector and method for producing the same |
| KR101894719B1 (en) * | 2011-07-29 | 2018-09-04 | 가부시키가이샤 유에이씨제이 | Aluminum alloy foil for electrode collector and production method therefor |
| CN105908021B (en) * | 2016-05-18 | 2017-08-25 | 登电集团铝加工有限公司 | A kind of capacitor fine aluminium Cathode Foil and its manufacture method |
-
1990
- 1990-01-24 JP JP1393890A patent/JP2907392B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03291363A (en) | 1991-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0097319B1 (en) | A cold-rolled aluminium-alloy sheet for forming and process for producing the same | |
| JPWO2004022805A1 (en) | High strength copper alloy | |
| KR0158723B1 (en) | Process for making high formability al-alloy sheets | |
| JP3511648B2 (en) | Method for producing high-strength Cu alloy sheet strip | |
| US5116428A (en) | Rolled thin sheets of aluminum alloy | |
| JP2907392B2 (en) | Manufacturing method of aluminum foil for cathode of electrolytic capacitor | |
| JPS626740B2 (en) | ||
| JP3161141B2 (en) | Manufacturing method of aluminum alloy sheet | |
| JP2004027253A (en) | Aluminum alloy sheet for forming and method of manufacturing the same | |
| JPH0363442B2 (en) | ||
| JPS6058299B2 (en) | Method for producing Al-Zn-Mg-Cu alloy material with excellent formability | |
| JP4550148B1 (en) | Copper alloy and manufacturing method thereof | |
| US3661657A (en) | Method for making aluminum sheet | |
| JP3286119B2 (en) | Aluminum alloy foil and method for producing the same | |
| JPS6058298B2 (en) | Method for producing Al-Zn-Mg-Cu alloy material with uniform formability | |
| JP2004076059A (en) | Aluminum alloy foil for cathode of electrolytic capacitor, and manufacturing method therefor | |
| JPS6254183B2 (en) | ||
| JP3587993B2 (en) | Manufacturing method of aluminum alloy sheet for deep drawing | |
| JP2001172754A (en) | Method of manufacturing for high purity aluminum foil for electrolytic capacitor | |
| JPH0143832B2 (en) | ||
| JP2001003131A (en) | Aluminum alloy material excellent in low-temperature creep characteristics, method for producing the same, and aluminum alloy product | |
| JPS63169353A (en) | Aluminum alloy for forming and its production | |
| JP3180812B2 (en) | Method for producing Al-Fe alloy foil | |
| JP2000038632A (en) | Aluminum foil base and its production | |
| JP3203678B2 (en) | Method for producing aluminum alloy foil for cathode of electrolytic capacitor |
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 |