JP3080396B2 - Aluminum alloy for natural coloring - Google Patents
Aluminum alloy for natural coloringInfo
- Publication number
- JP3080396B2 JP3080396B2 JP02318360A JP31836090A JP3080396B2 JP 3080396 B2 JP3080396 B2 JP 3080396B2 JP 02318360 A JP02318360 A JP 02318360A JP 31836090 A JP31836090 A JP 31836090A JP 3080396 B2 JP3080396 B2 JP 3080396B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- present
- color tone
- natural coloring
- treatment
- 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
- 229910000838 Al alloy Inorganic materials 0.000 title claims description 14
- 238000004040 coloring Methods 0.000 title claims description 6
- 230000002269 spontaneous effect Effects 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000011651 chromium Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000011575 calcium Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000007743 anodising Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 235000019640 taste Nutrition 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、自然発色用アルミニウム合金、特に陽極
酸化処理により表面に装飾用あるいは下地処理用として
の淡い緑褐色を呈する発色皮膜を生成し、建材用パネ
ル、家庭用器物、弱電部品、ネームプレート等に利用さ
れるアルミニウム合金に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum alloy for spontaneous coloring, and in particular, to produce a light-colored film having a light green-brown color for decoration or undercoating by anodic oxidation, and for building materials. The present invention relates to an aluminum alloy used for panels, household articles, light electrical components, name plates, and the like.
従来の技術 従来、陽極酸化処理によりその表面に各種色調を生ず
る自然発色用アルミニウム合金として種々のものが知ら
れている（例えば特開昭59−56558号、特開昭59−56561
号、特開昭61−20617号等）。2. Description of the Related Art Conventionally, various aluminum alloys for spontaneous coloring which produce various colors on the surface by anodizing treatment are known (for example, JP-A-59-56558, JP-A-59-56561).
No., JP-A-61-20617).
発明が解決しようとする課題 ところが、これら従来の自然発色用アルミニウム合金
では、陽極酸化処理により得られる皮膜の色調はアンバ
ー系、黄色系、乳白色系であり、昨今の趣向の多様化に
応じて求められる淡い緑褐色系の色調を得ることは困難
であった。Problems to be Solved by the Invention However, in these conventional aluminum alloys for spontaneous coloring, the color tone of the film obtained by the anodic oxidation treatment is amber, yellow, or milky white, which is required according to diversification of tastes in recent years. It was difficult to obtain a light green-brown color tone.
この発明は、かかる事情に鑑みてなされたものであっ
て、色調の多様化に応じて緑褐色系の色調を得ることの
できる自然発色用アルミニウム合金の提供を目的とす
る。The present invention has been made in view of the above circumstances, and has as its object to provide an aluminum alloy for natural coloring that can obtain a green-brown color tone in accordance with diversification of the color tone.
課題を解決するための手段 上記目的を達成するために、この発明は、Fe:1.0〜3.
0wt％、Ca:0.0005〜0.03wt％、Cr:0.35〜0.6wt％を含有
し、残部アルミニウム及び不可避不純物からなることを
特徴とする。Means for Solving the Problems To achieve the above object, the present invention provides Fe: 1.0 to 3.
It contains 0 wt%, 0.0005 to 0.03 wt% of Ca, and 0.35 to 0.6 wt% of Cr, and is characterized by being made up of aluminum and unavoidable impurities.
上記のアルミニウム合金において、Fe（鉄）はAl3Fe
として晶出することによりそれ自体では陽極酸化処理後
にクリーム色を生じさせるが、後述のCrとの共存により
結果的に淡い緑褐色を生じさせる効果がある。しかしそ
の含有量が1.0wt％未満ではその効果に乏しく、逆に3.0
wt％を超えて含有されると光沢が消失するとともに、皮
膜の耐食性が劣化する。従ってFeの含有量は1.0〜3.0wt
％の範囲内で選ばなければならないが、特に1.2〜1.8wt
％が好ましい。In the above aluminum alloy, Fe (iron) is Al 3 Fe
Crystallization by itself produces a cream color after anodic oxidation treatment, but has the effect of producing a pale green-brown as a result due to coexistence with Cr described later. However, if the content is less than 1.0 wt%, the effect is poor, and conversely, 3.0%
If the content is more than wt%, the gloss disappears and the corrosion resistance of the film deteriorates. Therefore Fe content is 1.0 ~ 3.0wt
%, But in particular 1.2 to 1.8 wt%
% Is preferred.
また、Ca（カルシウム）はアルミニウム合金中へのAl
3Feの晶出を促進して、圧延または押出加工後陽極酸化
処理を施した場合に、色むらのない皮膜を生成させる効
果を有する。しかし、0.0005wt％未満あるいは0.03wt％
を超える含有量ではその効果に乏しいものとなる。従っ
て、Caの含有量は0.0005〜0.03wt％の範囲としなければ
ならない。特に好ましくは0.003〜0.01wt％が良い。In addition, Ca (calcium) is used for Al in aluminum alloy.
3 to promote crystallization of Fe, when subjected to rolling or extrusion after the anodic oxidation treatment has the effect of generating a film free from color unevenness. However, less than 0.0005wt% or 0.03wt%
If the content exceeds, the effect is poor. Therefore, the content of Ca must be in the range of 0.0005 to 0.03 wt%. Particularly preferably, the content is 0.003 to 0.01% by weight.
Cr（クロム）は前記Al3Feと共存状態で存在すること
により、陽極酸化処理後に淡い緑褐色を生じさせる効果
がある。しかし、その含有量が0.35wt％未満では上記効
果に乏しい。一方、0.6wt％を超えると大きな金属間化
合物を形成するため、Crは0.35〜0.6wt％の範囲で含有
されなければならない。特に好ましくは0.35〜0.45wt％
である。When Cr (chromium) is present in a coexisting state with the Al 3 Fe, it has an effect of producing a pale greenish brown after anodizing. However, if the content is less than 0.35 wt%, the above effect is poor. On the other hand, if it exceeds 0.6 wt%, a large intermetallic compound is formed, so that Cr must be contained in the range of 0.35 to 0.6 wt%. Particularly preferably 0.35 to 0.45 wt%
It is.
上記のアルミニウム合金の製造方法は特に限定される
ことはなく、常法に従う圧延材、押出材等の製造方法を
適宜採用すれば良い。また、本発明に係るアルミニウム
合金鋳塊に560℃以上の温度で均質化処理を施すこと
は、合金組織を安定化しひいては陽極酸化処理後の色調
を安定化しうる点で推奨される。The method for producing the above aluminum alloy is not particularly limited, and a method for producing a rolled material, an extruded material, or the like according to a conventional method may be appropriately employed. Further, it is recommended that the aluminum alloy ingot according to the present invention be subjected to a homogenization treatment at a temperature of 560 ° C. or more, since it can stabilize the alloy structure and, consequently, the color tone after the anodization treatment.
この発明に係るアルミニウム合金は、これに陽極酸化
処理を施して自然発色させ、淡い緑褐色系の色調を有す
る着色アルミニウム材とする。陽極酸化処理は常法に従
う硫酸法等により行えば良い。The aluminum alloy according to the present invention is subjected to an anodic oxidation treatment so that the aluminum alloy naturally develops a color, thereby obtaining a colored aluminum material having a light green-brown color tone. The anodizing treatment may be performed by a sulfuric acid method or the like according to a conventional method.
実施例 次にこの発明の実施例を説明する。Embodiment Next, an embodiment of the present invention will be described.
半連続鋳造により、第１表に示す各種組成のアルミニ
ウム合金ビレット（直径75mm）を製作した。次に、これ
らビレットを600℃×10時間の均質化処理を行った後、
熱間にて直径16mmの丸棒に押出し、続いて表面脱脂処理
を行った。 Aluminum alloy billets (diameter: 75 mm) having various compositions shown in Table 1 were produced by semi-continuous casting. Next, after these billets are subjected to a homogenization treatment at 600 ° C. for 10 hours,
It was extruded into a round bar having a diameter of 16 mm while being heated, and subsequently subjected to surface degreasing treatment.
その後、液温20℃の15％硫酸水溶液中で、電流密度2A
/dm2の電流を通じて40分間の陽極酸化処理を施した。そ
して、表面に生成された陽極酸化皮膜の色調を観察し
た。Then, a current density of 2 A
Anodizing treatment was performed for 40 minutes through a current of / dm 2 . Then, the color tone of the anodic oxide film formed on the surface was observed.
その結果、本発明の実施に係る試料No1〜５について
は美しい淡い緑褐色の色調を呈していた。これに対し、
No6の合金の表面は乳白色分と暗黒色部とからなり色む
らを呈していた。またNo7の合金は乳白色を呈してい
た。従って、本発明によれば淡い緑褐色の色調を色むら
なく形成し得ることを確認し得た。As a result, Sample Nos. 1 to 5 according to the present invention exhibited a beautiful pale green-brown color tone. In contrast,
The surface of the No. 6 alloy was composed of a milky white part and a dark black part, and exhibited uneven color. The No. 7 alloy was milky white. Therefore, it was confirmed that according to the present invention, a light green-brown color tone can be formed without color unevenness.
発明の効果 この発明は上述の次第で、Fe、Ca、Crの所定量の含有
により、陽極酸化処理後に合金表面に淡い緑褐色の色調
を色むらなく均一かつ安定して得ることができる。従っ
て、建材用パネルなど表面装飾性を重要視されるものの
材料として好適に使用し得る。Effect of the Invention According to the present invention, as described above, a light green-brown color tone can be uniformly and stably obtained on the alloy surface after anodic oxidation treatment by containing a predetermined amount of Fe, Ca, and Cr. Therefore, it can be suitably used as a material for which surface decoration is important, such as a building material panel.
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 21/00 - 21/18 Continuation of front page (58) Field surveyed (Int. Cl. 7 , DB name) C22C 21/00-21/18
Claims (1)
Cr:0.35〜0.6wt％を含有し、残部アルミニウム及び不可
避不純物からなることを特徴とする自然発色用アルミニ
ウム合金。(1) Fe: 1.0 to 3.0 wt%, Ca: 0.0005 to 0.03 wt%,
Cr: An aluminum alloy for spontaneous coloring characterized by containing 0.35 to 0.6 wt%, the balance being aluminum and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02318360A JP3080396B2 (en) | 1990-11-22 | 1990-11-22 | Aluminum alloy for natural coloring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02318360A JP3080396B2 (en) | 1990-11-22 | 1990-11-22 | Aluminum alloy for natural coloring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04187736A JPH04187736A (en) | 1992-07-06 |
| JP3080396B2 true JP3080396B2 (en) | 2000-08-28 |
Family
ID=18098284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02318360A Expired - Lifetime JP3080396B2 (en) | 1990-11-22 | 1990-11-22 | Aluminum alloy for natural coloring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3080396B2 (en) |
-
1990
- 1990-11-22 JP JP02318360A patent/JP3080396B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04187736A (en) | 1992-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2606469B2 (en) | Aluminum alloy for spontaneous coloring and production method thereof | |
| JP3080396B2 (en) | Aluminum alloy for natural coloring | |
| US3265597A (en) | Anodizing process and electrolyte | |
| JPH07100837B2 (en) | Aluminum alloy for wrought and its manufacturing method | |
| JPH01272739A (en) | Aluminum alloy for self-color anodizing | |
| US3793089A (en) | Aluminum sheet | |
| JP2544233B2 (en) | Aluminum alloy having a blue-gray color tone after anodizing treatment and method for producing the same | |
| JP3116101B2 (en) | Aluminum alloy clad material that produces anodized films of different colors on both sides | |
| JPH06272079A (en) | Method for producing aluminum alloy product having spontaneous color development line hue and the aluminum alloy product | |
| DE2353842C2 (en) | Process for the production of aluminum sheet | |
| JPH08109427A (en) | Age-hardening aluminum alloy extruded profile for gray color development and method for producing the same | |
| JP2643632B2 (en) | Aluminum alloy wrought material for forming colored oxide film and method for producing the same | |
| JP3305517B2 (en) | Method for producing colored aluminum alloy, aluminum alloy material, and aluminum alloy material having reddish milky white anodic oxide film | |
| JPS5956558A (en) | Al alloy for self-color anodization | |
| JP2944191B2 (en) | Coloring method of aluminum alloy material | |
| JP2974328B2 (en) | Manufacturing method of aluminum alloy for natural coloring | |
| JP2006213947A (en) | Method for allowing crystal grain pattern of aluminum alloy to appear | |
| JPH0234741A (en) | Aluminum alloy for automobile bumper and its manufacture | |
| US4915798A (en) | Corrosion resistant aluminum product with uniformly grey, light-fast surface and process for its manufacture | |
| KR100230685B1 (en) | Method for preparing aluminum alloy base having light gray and ivory color by lactic acid electrolytic method and aluminum alloy base | |
| JP3078608B2 (en) | Method for producing aluminum alloy plate for anodizing treatment | |
| JPH0256414B2 (en) | ||
| JPH0873971A (en) | Striped aluminum alloy material and manufacturing method thereof | |
| JPH07292449A (en) | Method for producing aluminum alloy plate for anodizing treatment | |
| JPH08253831A (en) | Aluminum alloy plate for anodizing excellent in color uniformity and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100623 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100623 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110623 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110623 Year of fee payment: 11 |