JPH01149939A - Aluminum alloy for impact working excellent in pitting corrosion resistance - Google Patents
Aluminum alloy for impact working excellent in pitting corrosion resistanceInfo
- Publication number
- JPH01149939A JPH01149939A JP62307993A JP30799387A JPH01149939A JP H01149939 A JPH01149939 A JP H01149939A JP 62307993 A JP62307993 A JP 62307993A JP 30799387 A JP30799387 A JP 30799387A JP H01149939 A JPH01149939 A JP H01149939A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- corrosion resistance
- impact
- alloy
- pitting corrosion
- 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.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 29
- 230000007797 corrosion Effects 0.000 title abstract description 18
- 238000005260 corrosion Methods 0.000 title abstract description 18
- 238000003754 machining Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000005028 tinplate Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- -1 tin or steel Chemical compound 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は耐孔蝕性に優れたインパクト加工用アルミニウ
ム合金に関し、さらに詳しくは、腐蝕性の強い内容物の
に対して侵れた耐孔蝕性を有ずろアルミニウム合金に関
するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an aluminum alloy for impact machining that has excellent pitting resistance, and more particularly, to an aluminum alloy for impact processing that has excellent pitting resistance. It concerns a corrosive aluminum alloy.
［従来技術］
一般的に、アルミニウム或いはアルミニウム合金は、そ
の表面に保護力の強い酸化皮膜を形成し、実用上浸れた
耐蝕性を有することから、日用品、建築材料等の用途に
広く使用されている。[Prior Art] In general, aluminum or aluminum alloys form a highly protective oxide film on their surfaces and have excellent corrosion resistance in practical use, so they are widely used in daily necessities, building materials, etc. There is.
また、アルミニウム或いはアルミニウム合金は成形性に
優れているので、エアゾール缶等の各種の容器をインパ
クト加工により成形し、化粧品等を充填して使用されて
いる。Furthermore, since aluminum or aluminum alloys have excellent formability, various containers such as aerosol cans are formed by impact processing and filled with cosmetics and the like.
しかして、インパクト加工は、略製品寸法に近いボンデ
とダイスにより１回の工程で加工される。Therefore, impact processing is performed in one process using a bonder and a die that are approximately the same size as the product.
その加工量は他の加工法、例えば、数工程を経て製造さ
れるアルミニウム飲料缶（ＤＩ缶）に比べて非常に大き
く、従って、変形力の小さい純アルミニウム１０７０、
■０５０等の軟質材が使用されている。The amount of processing is very large compared to other processing methods, for example, aluminum beverage cans (DI cans) that are manufactured through several steps.
■A soft material such as 050 is used.
また、近年特開昭６１−１７６４３３号公報に示されて
いるように、同じ用途のインパクト缶においても外観に
種々の変化を付与して意匠性の向上が図られてきており
、加工性の優れた材料が必須になってきている。In recent years, as shown in Japanese Unexamined Patent Publication No. 61-176433, impact cans used for the same purpose have been improved in design by adding various changes to the appearance, and have improved workability. materials are becoming essential.
この種のインパクト加工により成形される容器材料とし
ては、Ｊ［５Ｉ０７０．１０５０等の比較的厚肉（１〜
２０ｍｍ）の軟質材が使用され、これはアルミニウム鋳
塊に熱間圧延或いは必要に応じて冷間圧延を行なって所
定の板厚にし、スラグと言われている円板に打ち抜かれ
る。そして、インパクト加工が容易になるように軟質化
処理が施されて供給されている。Container materials formed by this type of impact processing include relatively thick walls (1~
A soft material with a thickness of 20 mm) is used, which is made from an aluminum ingot by hot rolling or, if necessary, cold rolling, to a predetermined thickness, and then punched into disks called slugs. Then, it is supplied after being subjected to a softening process to facilitate impact processing.
さらに、この種インパクト加工用のアルミニウム合金は
成形性に優れ、耐蝕性も比較的良好であるが、内容物中
のＣＩイオンが数百ｐｐｍ以上と多い場合等腐蝕性の激
しい内容物の場合においては、孔蝕が発生し易く、容器
として用いた場合、穿孔が発生して、致命的な事故につ
ながる可能性があるので、その用途は自ずから制限され
る。Furthermore, although this type of aluminum alloy for impact processing has excellent formability and relatively good corrosion resistance, in the case of highly corrosive contents such as cases where the contents contain many CI ions of several hundred ppm or more, is prone to pitting, and when used as a container, perforation may occur and lead to a fatal accident, so its use is naturally limited.
特に、エアゾール缶の口金部がブリキ、スチール等アル
ミニウム或いはアルミニウム合金より電気化学的に責な
材料を用いる場合には、内容物自体の＋Ｕ蝕作用の他に
ガルバニック作用が付加されるため、アルミニウム或い
はアルミニウム合金の材料に発生ずる孔蝕の進行速度は
増大されるところとなり、内容物によるアルミニウム或
いはアルミニウム合金材料の用途制限はさらに厳しくな
るのである。In particular, when the mouthpiece of an aerosol can is made of a material that is more electrochemically sensitive than aluminum or aluminum alloy, such as tin or steel, galvanic action is added in addition to the +U corrosion action of the contents themselves. The rate of progress of pitting that occurs in aluminum alloy materials will increase, and the restrictions on the use of aluminum or aluminum alloy materials depending on the contents will become even more severe.
［発明が解決しようとする問題点コ
本発明は上記に説明したような従来におけるインパクト
加工用のアルミニウム（１０７０、ｔ。[Problems to be Solved by the Invention] The present invention is directed to the conventional impact processing aluminum (1070, t) as described above.
５０）は良好な特性を持ちながら電気化学的にインパク
ト加工用材料としての種々の問題点に鑑み、本発明者が
鋭意研究を行ない、検討を重ねた結果、優れた耐孔蝕性
を有するインパクト加工用アルミニウム合金を開発した
のである。50) has good properties, but in view of various problems as a material for electrochemical impact processing, the present inventor conducted intensive research and repeated examinations, and as a result, the impact material has excellent pitting corrosion resistance. They developed an aluminum alloy for processing.
［問題点を解決するための手段］
本発明に係る耐孔蝕性に優れたインパクト加工用アルミ
ニウム合金の特徴とするところは、Ｃｕ Ｏ，０５〜０
．８ｗｔ％、Ｍｎ ０．０５〜０．８ｗｔ％の内から選
んだ１種または２種
を含有し、残部Ａｌおよび不可避不純物からなることに
ある。[Means for Solving the Problems] The aluminum alloy for impact processing with excellent pitting resistance according to the present invention is characterized by CuO,05~0
．． 8 wt%, one or two selected from 0.05 to 0.8 wt% Mn, and the remainder consists of Al and unavoidable impurities.
本発明に係る耐孔蝕性に優れたインパクト加工用アルミ
ニウム合金について、以下詳細に説明する。The aluminum alloy for impact machining with excellent pitting resistance according to the present invention will be described in detail below.
先ず、本発明に係る耐孔蝕性に優れたインパクト加工用
アルミニウム合金の含有成分および含有割合について説
明する。First, the components and content ratios of the aluminum alloy for impact machining having excellent pitting resistance according to the present invention will be explained.
Ｃｕはアルミニウム合金を電気化学的に貴とすることに
より、ブリキ等の電気化学的に責な金属との組み合わせ
によるガルバニックな腐蝕を防止し、耐蝕性を向上さ什
る元素であり、含有量が０．０５ｖＬ％未満ではこの効
果が少なく、また、０．８ｗｔ％を越えて含有されると
粒界腐蝕感受性が増大し、さらに、強度が大幅に上昇し
てインパクト加工時に割れ、或いはプレス能力不足に伴
う成形不良を招く。よって、Ｃｕ含有量は０．０５〜０
．８ｗｔ％とする。Cu is an element that electrochemically enriches aluminum alloys, thereby preventing galvanic corrosion caused by combination with electrochemically sensitive metals such as tinplate, and improving corrosion resistance. If the content is less than 0.05 vL%, this effect will be small, and if the content exceeds 0.8 wt%, susceptibility to intergranular corrosion will increase, and furthermore, the strength will increase significantly, resulting in cracking during impact processing or insufficient press capacity. This results in molding defects. Therefore, the Cu content is between 0.05 and 0.
．． It is set to 8wt%.
ＭｎはＣｕと同様にアルミニウム合金を電気化学的に貴
とし、ブリキ等の電気化学的に責な金属との組み合わせ
によるガルバニックな腐蝕を防止し、耐蝕性を向上させ
ると共にアルミニウム合金のマトリックスより電気化学
的に貴なＡｌ−Ｆｅ系の化合物をＡｌ−Ｍｎ−Ｆｅ系化
合物とし、マトリックスと化合物の電位差を縮めること
で耐孔蝕性を向上させる元素であり、含有量が０．０５
ｗｔ％未満ではこのような効果は少なく、また、０，８
ｗｔ％を越えて含有されると金属間化合物のサイズが大
きくなり、かつ、数が多くなり、さらに、加工時の加工
便化が大きくなるのでインパクト成形に支障を来すよう
になる。よって、Ｍｎ含有徂は０．０５〜０．８ｗｔ％
とする。Like Cu, Mn makes aluminum alloy electrochemically noble, prevents galvanic corrosion when combined with electrochemically sensitive metals such as tinplate, and improves corrosion resistance. Al-Mn-Fe is an element that improves pitting resistance by reducing the potential difference between the matrix and the compound, and the content is 0.05.
Below wt%, this effect is small;
If the content exceeds wt%, the size and number of the intermetallic compounds will increase, and furthermore, the ease of processing during processing will increase, causing problems in impact molding. Therefore, the Mn content is 0.05 to 0.8 wt%
shall be.
これらの含有成分以外に、Ｔｉ等の鋳造組織を微細化す
る元素を含有さ仕ることが可能である。In addition to these components, it is possible to contain elements such as Ti that refine the cast structure.
なお、Ｐｃは不可避不純物として含有されることがあり
、含有ｍが０．５ｗｔ％までは本発明に係る耐孔蝕性に
優れたインパクト加工用アルミニウム合金の耐孔蝕性を
阻害することがなく、かつ、優れたインパクト加工性を
維持ずろことが可能であるが、少ない程望ましい元素で
ある。Incidentally, Pc may be contained as an unavoidable impurity, and up to 0.5 wt% of Pc will not inhibit the pitting corrosion resistance of the aluminum alloy for impact machining which has excellent pitting resistance according to the present invention. Although it is possible to maintain excellent impact workability, the smaller the amount of the element, the more desirable it is.
その他、Ｓｉ ＜ ｏ、３ｖｔ％、Ｍｇ ＜ ＯＪｗＬ
％、Ｚｎ ＜ ０．３ｗｔ％、Ｃｒ ＜ ０．３ｖｔ％
、Ｔｉ ＜ Ｏ，１ｗＬ％程度の含有量であれば、特に
問題となることはない。Others: Si < o, 3vt%, Mg < OJwL
%, Zn < 0.3wt%, Cr < 0.3vt%
, Ti < O, and the content is about 1 wL%, there is no particular problem.
［実 施 例］
次に、本発明に係る耐孔蝕性に浸れたインバクト加工用
アルミニウム合金の実施例を説明する。[Example] Next, an example of an aluminum alloy for impact machining that is impregnated with pitting resistance according to the present invention will be described.
実施例
第１表に示す含有成分および含有割合のアルミニウム合
金を常法によって溶解、鋳造し、この鋳塊から熱間圧延
により１０ｍｍの板厚とし、その後、冷間圧延により５
ｍｍの板厚とし、４５０℃×２時間の軟質化処理を行な
い、さらに、インパクト加工を想定して０．５ｍｍまで
冷間圧延を行なって供試材とした。Example An aluminum alloy having the components and proportions shown in Table 1 was melted and cast by a conventional method, and the ingot was hot rolled to a thickness of 10 mm, and then cold rolled to a thickness of 5 mm.
The test material was made into a test material by making the plate 1 mm thick, softening it at 450° C. for 2 hours, and then cold rolling it to 0.5 mm assuming impact processing.
第、１表において、ＮＯ，ｊ〜ＮＯ３４は本発明に係る
耐孔蝕性に優れたインパクト加工用アルミニウム合金で
、Ｎｏ、５〜Ｎ０１８は比較例である。In Table 1, No. 1 to No. 34 are aluminum alloys for impact machining with excellent pitting resistance according to the present invention, and No. 5 to No. 018 are comparative examples.
これらの供試材について、耐孔蝕性の試験を行なった。These test materials were tested for pitting resistance.
試験法は以下説明する通りである。The test method is as explained below.
第１図に示すように、塩化ビニルバイブ３の一端に電気
化学的に貴であるブリキ２を固定し、他端に供試材Ｉを
固定し、そして、ブリキ２と供試材ｌのアルミニウム合
金の組み合わせで使用する場合を想定し、この両者を導
線４で連結し、また、腐蝕媒体５としては腐蝕性の強い
モデル液として、食塩でＣＩイオンをｓｏｏｐｐｍに調
整し、クエン酸およびクエン酸ソーダによりｐＨを３に
調整したものを使用し、次いで、３８℃の温度に保持し
て２０日間経過後の各試料の孔触発生状況を評価した。As shown in Fig. 1, an electrochemically noble tinplate 2 is fixed to one end of a vinyl chloride vibrator 3, a test material I is fixed to the other end, and the tinplate 2 and the aluminum of the test material I are fixed. Assuming that a combination of alloys will be used, the two are connected with a conductive wire 4, and the corrosive medium 5 is a highly corrosive model liquid, with CI ions adjusted to sooppm with common salt, and citric acid and citric acid The pH of each sample was adjusted to 3 with soda, and then kept at a temperature of 38° C. for 20 days, after which the occurrence of pore formation was evaluated.
この結果を第１表に示すが、この第１表から明らかなよ
うに、本発明に係る耐孔蝕性に優れたインパクト加工用
アルミニウム合金は耐孔蝕性に優れており、また、イン
パクト加工性にも優れていることがわかる。The results are shown in Table 1. As is clear from Table 1, the aluminum alloy for impact machining with excellent pitting corrosion resistance according to the present invention has excellent pitting corrosion resistance. It turns out that they are also good at sex.
第１表
比較例Ｉ・・（、ＩＩＳ＋０７０）、比較例２・・（Ｊ
ＩＳ１０５０）最大孔帥深さ・・（μｍ）
［発明の効果コ
以上説明したように、本発明に係る耐孔蝕性に優れたイ
ンパクト加工用アルミニウム合金は上記の構成であるか
ら、耐孔蝕性に優れ、特に、アルミニウム合金より電気
化学的に責なブリキ等の材料を口金部として使用する場
合に極めて有効であり、アルミニウム合金を使用したイ
ンパクト加工容器としての用途をより拡大することがで
きるという効果を有しているものである。Table 1 Comparative Example I...(,IIS+070), Comparative Example 2...(J
IS1050) Maximum hole depth... (μm) [Effects of the invention As explained above, the aluminum alloy for impact machining with excellent pitting corrosion resistance according to the present invention has the above structure, so it has excellent pitting corrosion resistance. It is particularly effective when using materials such as tinplate, which are more electrochemically sensitive than aluminum alloys, as the mouthpiece, and can further expand its use as impact processing containers using aluminum alloys. It has this effect.
第１図は腐蝕試験方法の説明図である。
ｌ・・供試材、２・・電気化学的に責な飼料、３・・塩
化ビニルパイプ、４・・導線、５・・腐蝕媒体。FIG. 1 is an explanatory diagram of the corrosion test method. 1. Test material, 2. Electrochemically sensitive feed, 3. PVC pipe, 4. Conductive wire, 5. Corrosive medium.
Claims (1)
ｔ％の内から選んだ１種または２種 を含有し、残部Ａｌおよび不可避不純物からなることを
特徴とする耐孔蝕性に優れたインパクト加工用アルミニ
ウム合金。[Claims] Cu0.05-0.8wt%, Mn0.05-0.8w
An aluminum alloy for impact machining with excellent pitting resistance, characterized in that it contains one or two selected from t% and the remainder consists of Al and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62307993A JPH01149939A (en) | 1987-12-05 | 1987-12-05 | Aluminum alloy for impact working excellent in pitting corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62307993A JPH01149939A (en) | 1987-12-05 | 1987-12-05 | Aluminum alloy for impact working excellent in pitting corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01149939A true JPH01149939A (en) | 1989-06-13 |
Family
ID=17975614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62307993A Pending JPH01149939A (en) | 1987-12-05 | 1987-12-05 | Aluminum alloy for impact working excellent in pitting corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01149939A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2773819A1 (en) * | 1998-01-22 | 1999-07-23 | Cebal | Aluminum-copper-manganese alloy for impact extruded and drawn aerosol can manufacture |
| JP2009183265A (en) * | 2008-02-04 | 2009-08-20 | Katsuji Ando | Rice plant raising bucket with water-sprinkling device |
-
1987
- 1987-12-05 JP JP62307993A patent/JPH01149939A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2773819A1 (en) * | 1998-01-22 | 1999-07-23 | Cebal | Aluminum-copper-manganese alloy for impact extruded and drawn aerosol can manufacture |
| WO1999037826A1 (en) * | 1998-01-22 | 1999-07-29 | Cebal S.A. | Aluminium alloy for aerosol housing |
| JP2009183265A (en) * | 2008-02-04 | 2009-08-20 | Katsuji Ando | Rice plant raising bucket with water-sprinkling device |
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