JP2810249B2 - Aluminum foil rolling method - Google Patents
Aluminum foil rolling methodInfo
- Publication number
- JP2810249B2 JP2810249B2 JP3096382A JP9638291A JP2810249B2 JP 2810249 B2 JP2810249 B2 JP 2810249B2 JP 3096382 A JP3096382 A JP 3096382A JP 9638291 A JP9638291 A JP 9638291A JP 2810249 B2 JP2810249 B2 JP 2810249B2
- Authority
- JP
- Japan
- Prior art keywords
- foil
- rolling
- aluminum foil
- coil
- temperature
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明はアルミニウム箔圧延、特
に冷間圧延後のコイル状に巻かれたアルミニウム箔地を
箔圧延する際のシワ、中割れ、破断等を防止するための
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing wrinkles, medium cracks, breakage, and the like in rolling aluminum foil, particularly in rolling aluminum foil in a coil shape after cold rolling.
【０００２】[0002]
【従来の技術】アルミニウム箔は、包装材、電気材料、
工業用材料、日用品、装飾品などに広く使用されてい
る。アルミニウム箔は一般には箔の素材に適した純度の
溶湯を作り、これをスラブインゴットに鋳造し、溶融点
に近い高温に長時間保持してスラブインゴットの均質化
をする。ついで、酸化されたり、不純物の集中している
表面を削り、更に約３００℃程度に加熱され圧延され巻
き取られる。この巻き取られたコイルはホットコイルと
呼ばれる。ついで、ホットコイルは冷却された後、冷間
圧延を行う。この巻き取られたアルミニウム箔は一般に
箔地と呼ばれる。この箔地は普通厚さ０．４ｍｍ位であ
るが、これが仕上げ工程あるいは箔圧延工程に供給さ
れ、アルミニウム箔になる。製品アルミニウム箔の厚さ
にもよるが、箔地は粗延工程で厚さ約１００μｍ程度の
厚箔になり、中延工程でそれが約５０μｍ程度の中厚箔
となり、更に仕上げ工程で７〜１０μｍ程度の薄箔に圧
延される。もちろんアルミニウム箔の希望する厚さがこ
れより厚い時には仕上げ圧延工程を省略することもあ
る。本発明の説明において箔地とは冷間圧延、粗延圧延
および中延工程で得られる箔地厚箔および中厚箔を含め
た圧延の中間段階のもののすべてを意味して使用する。2. Description of the Related Art Aluminum foil is used for packaging materials, electric materials,
Widely used for industrial materials, daily necessities, decorations, etc. In general, aluminum foil is made of molten metal having a purity suitable for the material of the foil, cast into a slab ingot, and kept at a high temperature close to the melting point for a long time to homogenize the slab ingot. Then, the surface that is oxidized or the surface on which impurities are concentrated is scraped, and further heated to about 300 ° C., rolled and wound. This wound coil is called a hot coil. Next, after the hot coil is cooled, cold rolling is performed. This rolled-up aluminum foil is generally called foil ground. This foil material has a thickness of about 0.4 mm, and is supplied to a finishing step or a foil rolling step to become an aluminum foil. Depending on the thickness of the product aluminum foil, the foil base becomes a thick foil of about 100 μm thick in the rough rolling process, it becomes a medium thick foil of about 50 μm in the middle rolling process, and 7 to 10 μm in the finishing process It is rolled into thin foil. Of course, when the desired thickness of the aluminum foil is larger than this, the finish rolling step may be omitted. In the description of the present invention, the term “foil base” means all of the intermediate stages of rolling, including the base metal foil and the intermediate thick foil obtained in the cold rolling, rough rolling and middle rolling processes.
【０００３】圧延が終了すると、洗浄し、巻き取られ
る。このアルミニウム箔をそのまま使用することもある
が通常は熱処理して軟質化し、スリットして製品化す
る。[0003] When the rolling is completed, it is washed and wound up. Although this aluminum foil may be used as it is, it is usually softened by heat treatment and slit to produce a product.
【０００４】以上のように工程は各工程ごとにバッチで
あり、仮に連続であっても次工程に入るまでには待ち時
間が生じており、アルミニウム箔圧延はある程度前工程
のストックを持ちながら操業するのが常態である。[0004] As described above, the process is a batch for each process, and even if continuous, there is a waiting time before starting the next process. It is normal to do.
【０００５】したがって冷間圧延されたアルミニウム箔
（箔地）のコイルも仕上げ工程である粗延工程、中延工
程、仕上げ工程などの箔圧延工程にかけられるまで室温
であるコイル置き場等に保管されているのが普通であ
る。この際長時間の仕掛り時間を置いた箔地は、仕上げ
の圧延に送り出されると薄い箔地の場合は特にワークロ
ールにかみ込むまでに圧延方向にまっすぐあるいはやや
斜めにシワが発生し、これがワークロールで圧延される
まで箔が裂けた状態（いわゆる中割れ）や破断が生じや
すく、仕上がりアルミニウム箔の歩留りを低下させ、ま
た生産性を大きく低下させる原因となっていた。[0005] Therefore, the cold-rolled aluminum foil (foil base) coil is also stored in a coil storage room at room temperature until it is subjected to a foil rolling step such as a rough rolling step, a middle rolling step, and a finishing step. Is common. At this time, if the foil material with a long in-process time is sent out to finish rolling, especially in the case of thin foil material, wrinkles occur straight or slightly diagonally in the rolling direction until it bites into the work roll, Until rolled by a work roll, the foil is apt to be torn (so-called medium cracking) or to break, which lowers the yield of the finished aluminum foil and greatly reduces productivity.
【０００６】[0006]
【発明が解決しようとする課題】工程がスムーズに流れ
るためにはある程度の仕掛り時間を見ておくことは必要
であり、本発明は冷間圧延で製造された箔地コイルの長
い仕掛かり時間においてもアルミニウム箔の中割れ、破
断などの原因となるシワの起きない箔地コイルのアルミ
ニウム箔圧延方法の開発を目的とする。In order for the process to flow smoothly, it is necessary to look at a certain amount of in-process time, and the present invention relates to a long in-process time for a foil coil manufactured by cold rolling. It is also an object of the present invention to develop an aluminum foil rolling method for a foil ground coil which does not cause wrinkles which cause aluminum foil to crack or break.
【０００７】[0007]
【課題を解決するための手段】本発明は、冷間圧延後の
コイル状アルミニウム箔地を箔圧延するまでの間、４０
〜６５℃の温度において保温することを特徴とするアル
ミニウム箔圧延方法であり、また冷却したコイル状アル
ミニウム箔地を、コイル状のままで全体を４０〜６５℃
に再加熱した後圧延することを特徴とするアルミニウム
箔圧延方法である。SUMMARY OF THE INVENTION According to the present invention, a coiled aluminum foil base after cold rolling is processed by 40 mm until the foil is rolled.
An aluminum foil rolling method characterized by keeping the temperature at a temperature of ~ 65 ° C, and further cooling the coiled aluminum foil material at a temperature of 40-65 ° C while keeping the coiled shape.
And rolling after reheating.
【０００８】冷間圧延されたアルミニウム箔のコイルは
圧延直後は約６５℃くらいある。これを温度調節器を有
し、必要ならサーキュレーターを内蔵する保温箱に入れ
て４０℃以下にならないように保管し、仕上げ工程にか
ける時に取り出し、仕上げ圧延機にセットすることによ
り中割れのないアルミニウム箔圧延を行うことができ
る。また工程の都合によっては、箔地コイルを４０〜６
５℃に保温できないこともあると思われるが、この場合
には冷却したコイルを圧延する前に４０〜６５℃に再加
熱してから圧延することにより中割れの発生を減少させ
得る。[0008] Cold rolled aluminum foil coils are at about 65 ° C immediately after rolling. It has a temperature controller, and if necessary, it is stored in a heat insulation box with a built-in circulator so that it does not become lower than 40 ° C. It is taken out at the time of the finishing process, and is set in a finishing rolling mill. Foil rolling can be performed. Also, depending on the circumstances of the process, the foil ground coil may be 40 to 6
It seems that it may not be possible to keep the temperature at 5 ° C, but in this case, re-heating the cooled coil to 40 to 65 ° C before rolling and then rolling can reduce the occurrence of medium cracks.
【０００９】[0009]
【作用】冷間圧延から出てくるアルミニウム箔コイル
（箔地）は約６５℃程度の温度である。これがコイル置
き場等に保管されていると、徐々に冷却され外気温度ま
で冷却される。The temperature of the aluminum foil coil (foil material) coming out of the cold rolling is about 65 ° C. When this is stored in a coil storage place or the like, it is gradually cooled and cooled to the outside air temperature.
【００１０】箔地コイルは巻き硬さにもよるが冷間圧延
直後のコイルは通常１０〜１７％くらいの空隙率を有し
ている。これが冷却にあいほぼ約５０℃程度温度が低下
するのであるから箔地は熱収縮を起こし、コイルの空隙
部分が波状になり、細かい凹凸を示すようになる。この
状態になったコイルを箔圧延を行うために巻き戻しをす
ると、この影響が箔に表われ、凹凸部分がガイドロール
に不規則に接触したり、接触しなかったりしてワークロ
ールに引き取られるようになり、ガイドロールによる拘
束が不均一となりシワを生じ、中割れの原因になってい
るものと推定している。[0010] Although the foil base coil depends on the winding hardness, the coil immediately after cold rolling usually has a porosity of about 10 to 17%. Since the temperature drops by about 50 ° C. during cooling, the foil material undergoes thermal shrinkage, and the void portion of the coil becomes wavy, showing fine irregularities. When the coil in this state is rewound to perform foil rolling, this effect appears on the foil, and the uneven portion comes into contact with the guide roll irregularly or does not contact, and is taken up by the work roll. As a result, it is estimated that the restraint by the guide rolls becomes non-uniform, wrinkles are generated, and a medium crack is caused.
【００１１】また、一旦冷却しても再度４０〜６５℃に
再加熱すると、箔地は再び熱膨張し、コイル空隙部分の
波状の細かい凹凸はある程度減少し、巻き戻しがスムー
ズになると共にガイドロールへの接触も均一になるため
中割れが減少するものであろう。しかし、再加熱は冷間
圧延後のコイル状アルミニウム箔を保温していたものよ
り熱損失や再加熱時間が必要となるので、できれば単に
保温して４０〜６５℃を維持することが好ましい。この
中割れは箔の厚さが６０μｍ以下の場合によく発生す
る。When the foil is heated again to 40 to 65 ° C. even after cooling, the foil material expands again, and the corrugated fine irregularities in the gaps of the coil are reduced to some extent. Since the contact with the surface is also uniform, cracking will be reduced. However, reheating requires more heat loss and reheating time than that of maintaining the coiled aluminum foil after cold rolling. Therefore, it is preferable to simply maintain the temperature and maintain 40 to 65 ° C. if possible. This middle crack often occurs when the thickness of the foil is 60 μm or less.
【００１２】アルミニウム箔地コイルを保温箱に保管
し、あるいは冷却した箔地コイルを再加熱して仕上げ圧
延の直前に取り出し、ただちに圧延する時は冷却による
熱収縮がないので箔地に凹凸を防ぐことができるためこ
の中割れはほとんど防止できる。[0012] The aluminum foil coil is stored in a heat insulation box, or the cooled foil coil is reheated and taken out immediately before finish rolling. When rolling immediately, there is no thermal shrinkage due to cooling, so that unevenness of the foil is prevented. This cracking can be almost prevented.
【００１３】しかし、６５℃を越える高温での保管ある
いはこのように４０〜６５℃のごとき低温であっても長
時間である時は結晶の回復現象が進行し、箔地自身の腰
が弱くなり、箔圧延時にロールへのかみ込むときに座屈
が起きやすくなる。したがって高温あるいは長時間の保
管は避けるべきで、４０〜６５℃であってもできれば最
長でも３日程度にすべきである。However, when stored at a high temperature exceeding 65 ° C. or at a low temperature such as 40 to 65 ° C. for a long time, the crystal recovery phenomenon proceeds, and the rigidity of the foil material itself becomes weak. Buckling is likely to occur when biting into rolls during foil rolling. Therefore, high-temperature or long-term storage should be avoided, and even at 40 to 65 ° C., the maximum should be about 3 days at the maximum.
【００１４】[0014]
【実施例】（実施例１）１Ｎ３０の冷間圧延からの厚さ
３０μｍのアルミニウム箔地を５０℃の保温箱に２４時
間、３６時間、７２時間および９６時間保管した後、た
だちに７μｍの仕上げ圧延を行った。２４〜７２時間の
場合にはシワ、中割れの発生もなく順調に圧延ができ
た。９６時間保管の場合にはコイル１０巻の中１巻に座
屈が起きた。(Example 1) A 30 μm thick aluminum foil material obtained from cold rolling of 1N30 was stored in a 50 ° C. heat insulation box for 24 hours, 36 hours, 72 hours, and 96 hours, and then immediately finished rolled to 7 μm. Was done. In the case of 24 to 72 hours, rolling could be smoothly performed without generation of wrinkles and medium cracks. In the case of storage for 96 hours, buckling occurred in one out of ten coils.
【００１５】（実施例２）実施例１と同じアルミニウム
箔地を保管温度、保管時間（保温時間）を変えて同じ仕
上げ圧延を行った。結果を表１に示す。(Example 2) The same finish rolling as in Example 1 was performed by changing the storage temperature and the storage time (heat retention time). Table 1 shows the results.
【００１６】 [0016]
【００１７】なお、比較例２の条件のアルミニウム箔地
の保温箱を５０℃に昇温して４８時間経過したものは同
じ条件で圧延しても中割れがなかった。In the case where the heat insulation box of the aluminum foil base under the condition of Comparative Example 2 was heated to 50 ° C. for 48 hours, there was no medium crack even if the same condition was rolled.
【００１８】[0018]
【発明の効果】冷間圧延により得られるコイル状のアル
ミニウム箔地を仕上げ圧延までの間保温箱に４０〜６５
℃に保管することによりシワの発生、圧延中割れを防止
する方法を開発した。また工程の都合で４０℃以下の温
度まで冷却した箔地であっても４０〜６５℃の温度に再
加熱することにより、座屈や中割れの防止に効果がある
方法を開発した。これらの方法による時は操作は極めて
簡単でかつ確実に、箔地は凹凸のシワの発生を減少させ
ることができるため、中割れの防止のみならず、巻き戻
しがスムーズであり、アルミニウム箔の歩留り、生産性
が高い方法である。According to the present invention, the coiled aluminum foil material obtained by the cold rolling is placed in a heat insulating box until the finish rolling is completed.
A method was developed to prevent wrinkles and cracks during rolling by storing at ℃. In addition, a method has been developed that is effective in preventing buckling and medium cracking by reheating to a temperature of 40 to 65 ° C. even for a foil material cooled to a temperature of 40 ° C. or less due to the process. When using these methods, the operation is extremely simple and reliable, and the foil material can reduce the occurrence of wrinkles of irregularities, so that not only prevention of medium cracking, but also smooth rewinding, yield of aluminum foil , A highly productive method.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ２２Ｆ 1/00 ６９２ Ｃ２２Ｆ 1/00 ６９２Ｂ ６９３ ６９３Ａ ６９４ ６９４Ｂ (58)調査した分野(Int.Cl.6，ＤＢ名) C22F 1/04 B21B 1/40 B21B 3/00──────────────────────────────────────────────────続 き Continuation of front page (51) Int.Cl. 6 identification code FI C22F 1/00 692 C22F 1/00 692B 693 693A 694 694B (58) Fields surveyed (Int.Cl. 6 , DB name) C22F 1 / 04 B21B 1/40 B21B 3/00
Claims (2)
を、箔圧延するまでの間、４０〜６５℃の温度において
保温することを特徴とするアルミニウム箔圧延方法。1. An aluminum foil rolling method, wherein the coiled aluminum foil after cold rolling is kept at a temperature of 40 to 65 ° C. until the foil is rolled.
コイル状のままで全体を４０〜６５℃に再加熱した後圧
延することを特徴とするアルミニウム箔圧延方法。2. A cooled coiled aluminum foil substrate,
An aluminum foil rolling method, wherein the whole is reheated to 40 to 65 [deg.] C. in a coil shape and then rolled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3096382A JP2810249B2 (en) | 1991-04-01 | 1991-04-01 | Aluminum foil rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3096382A JP2810249B2 (en) | 1991-04-01 | 1991-04-01 | Aluminum foil rolling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04304345A JPH04304345A (en) | 1992-10-27 |
| JP2810249B2 true JP2810249B2 (en) | 1998-10-15 |
Family
ID=14163412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3096382A Expired - Lifetime JP2810249B2 (en) | 1991-04-01 | 1991-04-01 | Aluminum foil rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2810249B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115331963A (en) * | 2022-08-02 | 2022-11-11 | 新疆众和股份有限公司 | Electrode foil processing device, electrode foil processing technology and electrode foil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57199503A (en) * | 1981-06-01 | 1982-12-07 | Kobe Steel Ltd | Rolling method for aluminum foil |
-
1991
- 1991-04-01 JP JP3096382A patent/JP2810249B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04304345A (en) | 1992-10-27 |
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