JP2944191B2 - Coloring method of aluminum alloy material - Google Patents
Coloring method of aluminum alloy materialInfo
- Publication number
- JP2944191B2 JP2944191B2 JP29444590A JP29444590A JP2944191B2 JP 2944191 B2 JP2944191 B2 JP 2944191B2 JP 29444590 A JP29444590 A JP 29444590A JP 29444590 A JP29444590 A JP 29444590A JP 2944191 B2 JP2944191 B2 JP 2944191B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy material
- aluminum alloy
- aluminum
- electrolytic
- color tone
- 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
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、例えば建材用パネル、厨房品等に適用可
能なアルミニウム合金材の着色方法に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coloring an aluminum alloy material applicable to, for example, building material panels, kitchen articles, and the like.
従来の技術 例えば建材用パネルや厨房品等として用いられるアル
ミニウム合金材は、一般には二次電解または三次電解処
理を施す電解着色法により着色してカラー製品となされ
る。かかる着色法によるときは、染色法による場合と較
べて色調の耐候性等に優れた製品となすことができると
いう利点がある。2. Description of the Related Art For example, an aluminum alloy material used as a panel for a building material, a kitchen product, or the like is generally colored by an electrolytic coloring method of performing a secondary electrolytic or tertiary electrolytic treatment to obtain a colored product. When using such a coloring method, there is an advantage that a product excellent in weather resistance of color tone and the like can be obtained as compared with the case using the coloring method.
発明が解決しようとする課題 しかしながら、かかる電解着色法により得られる色調
は、アンバー色、ブロンズ色、ゴールド色、ローズ色、
黒色等に限られたものであり、近年の色調の多様化とい
う要望には応じられないものであった。また電解着色法
による場合には特殊な装置を用いて二次電解、三次電解
等の複雑な処理を施すことが必要であり、その処理に手
間と時間とを要するものであった。特に厨房品にあって
は硫酸アルマイト処理を施すのが普通であり二次電解着
色処理等の複雑な処理は採用され難いものであった。Problems to be Solved by the Invention However, the color tone obtained by such an electrolytic coloring method is amber, bronze, gold, rose,
It was limited to black and the like, and could not meet the recent demand for diversification of color tones. In addition, in the case of the electrolytic coloring method, it is necessary to perform a complicated process such as secondary electrolysis and tertiary electrolysis using a special device, and the process requires time and effort. Particularly, kitchen products are usually subjected to sulfuric acid alumite treatment, and complicated treatments such as secondary electrolytic coloring treatment are hardly adopted.
この発明は、一次電解処理のみによって自然発色さ
せ、しかも従来得られなかった色調に着色しうる方法を
提供することを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a method in which a color is spontaneously formed only by a primary electrolytic treatment and can be colored to a color tone which has not been obtained conventionally.
課題を解決するための手段 上記目的を達成するために、発明者は種々実験と研究
を重ねた結果、着色処理対象物たるアルミニウム合金材
の組成および電解処理浴の組成を適宜選定することによ
って、今までには得られなかった色調が得られることを
見出し、この発明の完成しえたものである。Means for Solving the Problems In order to achieve the above object, the inventor repeated various experiments and studies, and by appropriately selecting the composition of the aluminum alloy material to be colored and the composition of the electrolytic treatment bath, The inventors have found that a color tone that has not been obtained until now can be obtained, and the present invention has been completed.
即ち、上記目的は、被着色処理アルミニウム合金材と
して、Fe:0.6〜3.0wt％、Cr:0.10〜0.8wt％、Ca:0.0005
〜0.03wt％を含有し、残部がアルミニウムおよび不可避
不純物からなるＡ−Fe−Cr系アルミニウム合金材を用
い、該合金材を全酸［Ａ２（SO4）3/H2SO4］:6〜20vo
l％、遊離酸［H2SO4］:3〜15vol％、溶存アルミニウム を含有する硫酸電解浴中で一次電解処理を施すことを特
徴とする、アルミニウム合金材の着色方法によって達成
される。That is, the above-mentioned objects are to be performed as a color-treated aluminum alloy material: Fe: 0.6 to 3.0 wt%, Cr: 0.10 to 0.8 wt%, Ca: 0.0005
A-Fe-Cr-based aluminum alloy material containing about 0.03 wt% and the balance consisting of aluminum and unavoidable impurities is used, and the alloy material is a total acid [A 2 (SO 4 ) 3 / H 2 SO 4 ]: 6 ~ 20vo
l%, free acid [H 2 SO 4]: 3~15vol %, dissolved aluminum This is achieved by a method for coloring an aluminum alloy material, comprising performing a primary electrolytic treatment in a sulfuric acid electrolytic bath containing:
この発明における被着色処理アルミニウム合金材にお
けるFeおよびCrは、該合金材を上記硫酸電解浴中で一次
電解処理を施することにより、従来得られなかったよう
な例えばグリーン系の色調を帯びたアルマイト皮膜を形
成させるための自然発色合金としての必要的添加元素で
ある。Feの含有量が0.6〜3.0wt％に限定されるのは、0.
6％未満では深み感のある色調が得られにくく、逆に3.0
％を越えるとアルマイト皮膜の膜質が悪くなり耐食性が
劣化し、実用に耐えられないおそれを派生するからであ
る。Crの含有量が0.10〜0.8wt％に限定されるのは、0.1
0未満では色が薄く目的とする色調が得られず、グリー
ン系の色調を帯びたアルマイト皮膜を形成させるための
自然発色合金として不適当であり、0.8wt％を越えると
黄色が強くなり目的とする色が得られないからである。
CaはFeの安定化に寄与するものであり、その含有量が0.
0005〜0.03wt％に限定されるのは、0.0005wt％未満では
鋳塊の全領域にＡ3Feが晶出しないからであり、0.03w
t％を越えても同様に鋳塊の全領域にＡ3Feが晶出しな
いからである。Fe and Cr in the aluminum alloy material to be colored according to the present invention are, for example, alumite having a green color tone, which could not be obtained conventionally, by subjecting the alloy material to a primary electrolytic treatment in the sulfuric acid electrolytic bath. It is a necessary additive element as a spontaneously coloring alloy for forming a film. The content of Fe is limited to 0.6-3.0 wt% because
If it is less than 6%, it is difficult to obtain a deep color tone, and conversely, 3.0%
%, The quality of the alumite film is deteriorated, the corrosion resistance is degraded, and there is a possibility that the film cannot be put to practical use. The content of Cr is limited to 0.10 to 0.8 wt%,
If it is less than 0, the color is light and the desired color tone cannot be obtained, and it is not suitable as a natural color developing alloy for forming an alumite film with a green color tone. This is because a desired color cannot be obtained.
Ca contributes to the stabilization of Fe, and its content is 0.
Be limited to 0005～0.03Wt%, in less than 0.0005wt% is because the entire area of the ingot A 3 Fe does not crystallize, 0.03 w
This is because A 3 Fe similarly does not crystallize in the entire region of the ingot even if it exceeds t%.
上記Ａ−Fe−Cr系合金材に、常法に従って機械研
磨、アルカリ洗浄、化学研磨、電解研磨等の前処理を施
した後、これに一次電解処理を施すことによってその表
面に着色されたアルマイト皮膜を形成せしめるのである
が、前述のようにその皮膜として従来得られなかった例
えばグリーン系の色調のものを得るために上記電解浴と
して所定の浴組成に管理した次の電解浴を用いる必要が
ある。The above-mentioned A-Fe-Cr alloy material is subjected to pretreatment such as mechanical polishing, alkali cleaning, chemical polishing, and electrolytic polishing according to a conventional method, and then subjected to a primary electrolytic treatment to thereby provide anodized aluminum whose surface is colored. Although a film is formed, as described above, it is necessary to use the next electrolytic bath controlled to a predetermined bath composition as the electrolytic bath in order to obtain, for example, a green color tone which has not been conventionally obtained as the film. is there.
即ち、全酸［Ａ２（SO4）3/H2SO4］:6〜20vol％、
遊離酸［H2SO4］:3〜15vol％、溶存アルミニウム を含有する電解浴を用いるものとする。That is, total acid [A 2 (SO 4 ) 3 / H 2 SO 4 ]: 6 to 20 vol%,
Free acid [H 2 SO 4 ]: 3 to 15 vol%, dissolved aluminum Shall be used.
上記電解浴において全酸［Ａ２（SO4）3/H2SO4］が
６〜20vol％に限定されるのは、6vol％未満であると皮
膜の耐食性が不十分となり、逆に20vol％を超えると品
質が安定しなくなるからである。遊離酸［H2SO4］が３
〜15vol％に限定されるのは、3vol％未満であるとSO4 -2
イオンが不足し、皮膜の生成が悪くなり、逆に15vol％
を超えると皮膜表面が溶解して色が安定しないからであ
る。溶存アルミニウム が３〜17g/に限定されるのは、3g/未満であるとス
マットの発生が多くなり、逆に17g/を超えると皮膜の
色調が悪くなるからである。In the above electrolytic bath, the total acid [A 2 (SO 4 ) 3 / H 2 SO 4 ] is limited to 6 to 20 vol%. If it is less than 6 vol%, the corrosion resistance of the film becomes insufficient, and conversely, 20 vol% This is because if the ratio exceeds, the quality becomes unstable. 3 free acids [H 2 SO 4 ]
SO 4 -2 is limited to ~ 15vol% if less than 3vol%
Insufficient ions, poor film formation, conversely 15 vol%
This is because, if it exceeds 1, the surface of the film dissolves and the color becomes unstable. Dissolved aluminum Is limited to 3 to 17 g /, because if it is less than 3 g /, the occurrence of smut increases, and if it exceeds 17 g /, the color tone of the film deteriorates.
上記Ａ−Fe−Cr系合金材においてCrの含有量が0.10
〜0.4wt％である場合、電解処理によりその表面に膜厚
が６〜10μｍ程度のアルマイト皮膜を形成せしめるとク
リーム色の色調を呈するものとなり、同膜厚が15〜20μ
ｍ程度以上になると緑黄色を呈するものとなる。一方、
Crの含有量が0.4〜0.8wt％である場合、膜厚が６μｍ程
度のアルマイト皮膜を形成せしめるとクリーム色の色調
を呈するものとなり、同膜厚が10μｍ程度で黄緑色、15
〜20μｍ程度以上でライトグリーンを呈するものとな
る。In the A-Fe-Cr alloy material, the content of Cr is 0.10.
In the case of about 0.4 wt%, when an alumite film having a thickness of about 6 to 10 μm is formed on the surface by electrolytic treatment, a cream color tone is exhibited, and the same film thickness becomes 15 to 20 μm.
When it is about m or more, it becomes green-yellow. on the other hand,
When the Cr content is 0.4 to 0.8 wt%, a creamy color tone is obtained when an alumite film having a film thickness of about 6 μm is formed.
Light green is exhibited when the thickness is about 20 μm or more.
発明の効果 この発明は、上述の次第で、Fe:0.6〜3.0wt％、Cr:0.
10〜0.8wt％、Ca:0.0005〜0.03wt％を含有し、残部がア
ルミニウムおよび不可避不純物からなるＡ−Fe−Cr系
アルミニウム合金材を用い、該合金材を特定組成の硫酸
電解浴中で一次電解処理を施するものであるから、従来
の電解着色法による場合のような二次電解処理や三次電
解処理を施すことなく簡易に着色せしめることができ
る。しかも、従来の電解着色法では得られなかった色
調、特にグリーン系の色調を帯びたアルミニウム合金材
を得ることができ、近年要求される色調の多様化に応ず
ることができる。Effect of the Invention The present invention provides, as described above, Fe: 0.6 to 3.0 wt%, Cr: 0.
An A-Fe-Cr-based aluminum alloy material containing 10 to 0.8 wt% and Ca: 0.0005 to 0.03 wt% and the balance consisting of aluminum and unavoidable impurities is used. Since the electrolytic treatment is performed, coloring can be easily performed without performing a secondary electrolytic treatment or a tertiary electrolytic treatment as in the conventional electrolytic coloring method. In addition, it is possible to obtain an aluminum alloy material having a color tone that cannot be obtained by the conventional electrolytic coloring method, in particular, a green color tone, and can respond to diversification of the color tone required in recent years.
実施例 （実施例１） 常法に従う半連続鋳造で、Fe:2.0wt％、Cr:0.3wt％、
Ca:0.02wt％を含み残部アルミニウムおよび不可避不純
物からなるスラブを鋳造した後、常法に従う熱間圧延、
冷間圧延、焼鈍、最終圧延を順次的に実施し、長さ2500
mm×幅1240mm×厚さ1.0mmのアルミニウム合金材を５枚
製作した。Example (Example 1) In semi-continuous casting according to a conventional method, Fe: 2.0 wt%, Cr: 0.3 wt%,
After casting a slab containing Ca: 0.02 wt% and the balance aluminum and unavoidable impurities, hot rolling according to the usual method,
Cold rolling, annealing, and final rolling are performed sequentially, and the length is 2500
Five aluminum alloy materials having a size of mm × 1240 mm × 1.0 mm in thickness were produced.
次に、上記各合金材に常法に従った前処理を施したの
ち、これらを 全酸［Ａ２（SO4）3/H2SO4］:15vol％、 遊離酸［H2SO4］:10vol％、 溶存アルミニウム を含有する硫酸電解浴中で硫酸陽極酸化処理を実施し、
その表面にそれぞれ膜厚が６μｍ、10μｍ、15μｍ、20
μｍ、25μｍのアルマイト皮膜を形成した。そして、皮
膜形成後の各アルミニウム合金材の表面色調を目視観察
したところ、膜厚が６μｍ、10μｍのものにあってはク
リーム色を呈するものであり、15μｍ、20μｍ、25μｍ
のものにあっては黄緑色を呈するものであった。Next, each of the above-mentioned alloy materials is subjected to a pretreatment according to a conventional method, and then, these are subjected to total acid [A 2 (SO 4 ) 3 / H 2 SO 4 ]: 15 vol%, free acid [H 2 SO 4 ] : 10vol%, dissolved aluminum An sulfuric acid anodizing treatment in a sulfuric acid electrolytic bath containing
The surface has a thickness of 6 μm, 10 μm, 15 μm, 20 μm, respectively.
Alumite films of 25 μm and 25 μm were formed. Then, the surface color tone of each aluminum alloy material after the film formation was visually observed, and when the film thickness was 6 μm or 10 μm, it exhibited a cream color, and 15 μm, 20 μm, or 25 μm
Some of them had a yellow-green color.
（実施例２） Fe:2.0wt％、Cr:0.6wt％、Ca:0.02wt％を含み残部ア
ルミニウムおよび不可避不純物からなるアルミニウム合
金材を、実施例１と同じ方法で５枚製作したのち、実施
例１と同一条件で前処理および陽極酸化処理を施してそ
の表面にそれぞれ膜厚が６μｍ、10μｍ、15μｍ、20μ
ｍ、25μｍのアルマイト皮膜を形成した。そして、処理
後の各アルミニウム合金材の表面の色調を調べたとこ
ろ、６μｍのものはクリーム色を呈し、10μｍのものは
黄緑色を呈し、15μｍ、20μｍ、25μｍのものはいずれ
もライトグリーンを呈するものであった。(Example 2) Five aluminum alloy materials containing 2.0% by weight of Fe, 0.6% by weight of Cr, and 0.02% by weight of Ca and the balance of aluminum and unavoidable impurities were produced in the same manner as in Example 1, and then implemented. A pre-treatment and an anodic oxidation treatment were performed under the same conditions as in Example 1, and the film thickness was 6 μm, 10 μm, 15 μm and 20 μm on the surface, respectively.
An alumite film having a thickness of 25 μm was formed. When the color tone of the surface of each aluminum alloy material after the treatment was examined, those of 6 μm exhibited cream color, those of 10 μm exhibited yellow green, and those of 15 μm, 20 μm and 25 μm exhibited light green. Was something.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−312998（ＪＰ，Ａ) 特開 昭55−58394（ＪＰ，Ａ) 特開 昭52−102845（ＪＰ，Ａ) 特開 昭52−95548（ＪＰ，Ａ) 特開 昭52−43739（ＪＰ，Ａ) 特開 昭52−20939（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C25D 11/14 301 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-312998 (JP, A) JP-A-55-58394 (JP, A) JP-A-52-102845 (JP, A) JP-A 52-102845 95548 (JP, A) JP-A-52-43739 (JP, A) JP-A-52-20939 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C25D 11/14 301
Claims (1)
e:0.6〜3.0wt％、Cr:0.10〜0.8wt％、Ca:0.0005〜0.03w
t％を含有し、残部がアルミニウムおよび不可避不純物
からなるＡ−Fe−Cr系アルミニウム合金材を用い、該
合金材を全酸［Ａ２（SO4）3/H2SO4］:6〜20vol％、
遊離酸［H2SO4］:3〜15vol％、溶存アルミニウム を含有する硫酸電解浴中で一次電解処理を施すことを特
徴とする、アルミニウム合金材の着色方法。(1) An aluminum alloy material to be colored is F
e: 0.6 ~ 3.0wt%, Cr: 0.10 ~ 0.8wt%, Ca: 0.0005 ~ 0.03w
A-Fe-Cr-based aluminum alloy material containing t% and the balance consisting of aluminum and unavoidable impurities is used, and the alloy material is a total acid [A 2 (SO 4 ) 3 / H 2 SO 4 ]: 6 to 20 vol. %,
Free acid [H 2 SO 4 ]: 3 to 15 vol%, dissolved aluminum A method for coloring an aluminum alloy material, comprising performing a primary electrolytic treatment in a sulfuric acid electrolytic bath containing:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29444590A JP2944191B2 (en) | 1990-10-30 | 1990-10-30 | Coloring method of aluminum alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29444590A JP2944191B2 (en) | 1990-10-30 | 1990-10-30 | Coloring method of aluminum alloy material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04168298A JPH04168298A (en) | 1992-06-16 |
| JP2944191B2 true JP2944191B2 (en) | 1999-08-30 |
Family
ID=17807872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29444590A Expired - Fee Related JP2944191B2 (en) | 1990-10-30 | 1990-10-30 | Coloring method of aluminum alloy material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2944191B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0748642A (en) * | 1993-08-05 | 1995-02-21 | Showa Alum Corp | Color-developed aluminum alloy clad material for forming face with different color |
| JPH07118780A (en) * | 1993-10-18 | 1995-05-09 | Showa Alum Corp | Colored aluminum alloy clad material for forming dissimilar-color surfaces |
| JPH07113138A (en) * | 1993-10-18 | 1995-05-02 | Showa Alum Corp | Colored aluminum alloy clad material for forming dissimilar-color surfaces |
-
1990
- 1990-10-30 JP JP29444590A patent/JP2944191B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04168298A (en) | 1992-06-16 |
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