JP2974328B2 - Manufacturing method of aluminum alloy for natural coloring - Google Patents
Manufacturing method of aluminum alloy for natural coloringInfo
- Publication number
- JP2974328B2 JP2974328B2 JP1170041A JP17004189A JP2974328B2 JP 2974328 B2 JP2974328 B2 JP 2974328B2 JP 1170041 A JP1170041 A JP 1170041A JP 17004189 A JP17004189 A JP 17004189A JP 2974328 B2 JP2974328 B2 JP 2974328B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- cold rolling
- heat treatment
- color tone
- rolling
- 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 17
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000004040 coloring Methods 0.000 title description 8
- 238000005097 cold rolling Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 238000005098 hot rolling Methods 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000011282 treatment Methods 0.000 description 16
- 229910000765 intermetallic Inorganic materials 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910017082 Fe-Si Inorganic materials 0.000 description 5
- 229910017133 Fe—Si Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000011856 silicon-based particle Substances 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 238000007743 anodising Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Landscapes
- Metal Rolling (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、例えば建材用内外装パネルや器物等の着
色アルミニウム合金材として用いられる自然発色用アル
ミニウム合金、特にアンバー系の色調が得られる自然発
色用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 a natural color developing aluminum alloy used as a colored aluminum alloy material for, for example, interior and exterior panels for building materials and equipment, and particularly to a natural color developing method capable of obtaining an amber-based color tone. Related to aluminum alloy.
従来の技術 従来、アンバー系の色調を有する着色アルミニウム材
を得る場合、二次電解着色法による着色方法が一般に用
いられている。2. Description of the Related Art Conventionally, when a colored aluminum material having an amber color tone is obtained, a coloring method using a secondary electrolytic coloring method is generally used.
発明が解決しようとする課題 ところが、上記の二次電解着色法では陽極酸化処理に
よる一次電解処理後、Ni等の金属塩を含む電解液中で二
次電解処理を行わなければならないため、処理が煩雑で
あるという欠点があった。しかも、処理設備が大がかり
となりコストも高くつくという欠点があった。しかもま
た、必ずしも安定した色調が得られずかつ再現性の点で
問題もあった。Problems to be Solved by the Invention However, in the above-described secondary electrolytic coloring method, after the primary electrolytic treatment by anodizing treatment, the secondary electrolytic treatment must be performed in an electrolytic solution containing a metal salt such as Ni. There was a disadvantage that it was complicated. In addition, there is a disadvantage that the processing equipment is large and the cost is high. Moreover, a stable color tone was not always obtained, and there was a problem in reproducibility.
この発明は、かかる技術的背景に鑑みてなされたもの
であって、アンバー系の安定した色調を簡単にかつ再現
性良く得ることができるアルミニウム合金の提供を目的
とするものである。The present invention has been made in view of such a technical background, and an object of the present invention is to provide an aluminum alloy capable of easily obtaining a stable amber-based color tone with good reproducibility.
課題を解決するための手段 上記目的を達成するために、発明者は鋭意研究を重ね
た結果、特定組成と適正な製造工程の組合せによって製
作したアルミニウム合金を自然発色させることにより、
アンバー系の安定した色調が再現性良く得られることを
見出し、かかる知見に基いてこの発明を完成しえたもの
である。Means for Solving the Problems In order to achieve the above object, the present inventors have conducted intensive research and, as a result, by spontaneously coloring an aluminum alloy manufactured by a combination of a specific composition and an appropriate manufacturing process,
It has been found that a stable color tone of amber system can be obtained with good reproducibility, and the present invention has been completed based on such findings.
即ち、この発明の１つは、Si:0.5〜2.5wt％、Fe:0.05
〜0.5wt％を含有し、残部がアルミニウム及び不可避不
純物からなるアルミニウム合金鋳塊に、500℃以上かつ
５時間以上の均熱処理を実施したのち、熱間圧延、第一
次冷間圧延、300℃以上の加熱処理、圧下率15％以上の
第二次冷間圧延を順次的に実実施するとともに、第二次
冷間圧延後に加熱処理を実施しないことを特徴とする自
然発色用アルミニウム合金の製造方法であり、他の１つ
は、Si:0.5〜2.5wt％、Fe:0.05〜0.5wt％を含有し、残
部がアルミニウム及び不可避不純物からなるアルミニウ
ム合金鋳塊に、500℃以上かつ５時間以上の均熱処理を
実施したのち、熱間圧延、冷間圧延を順次的に実施し、
冷間圧延途中の中間焼鈍を実施することなく、その後20
0℃以上の温度で加熱処理を実施することを特徴とする
ものである。That is, one of the present inventions is that Si: 0.5 to 2.5 wt%, Fe: 0.05
~ 0.5wt%, the balance of aluminum alloy ingot consisting of aluminum and unavoidable impurities is subjected to soaking at 500 ℃ or more for 5 hours or more, then hot rolling, first cold rolling, 300 ℃ The production of an aluminum alloy for spontaneous coloring, characterized in that the above heat treatment and the second cold rolling with a rolling reduction of 15% or more are sequentially carried out and the heat treatment is not carried out after the second cold rolling. The other method is to form an aluminum alloy ingot containing 0.5 to 2.5 wt% of Si and 0.05 to 0.5 wt% of Fe and the balance of aluminum and unavoidable impurities at a temperature of 500 ° C. or more and 5 hours or more. After performing the soaking heat treatment, hot rolling and cold rolling are sequentially performed,
Without performing intermediate annealing during cold rolling,
The heat treatment is performed at a temperature of 0 ° C. or more.
まず、この発明に用いるアルミニウム合金鋳塊の組成
において、Si及びFeはともに自然発色によりアンバー系
の色調を生じさせる役割を果す。即ち、Siは晶出及び析
出単体Si粒子としてあるいはＡ−Fe−Si金属間化合物
として、またFeはＡ−Fe−Si金属間化合物としてある
いはＡ3Fe金属間化合物としてこれらが適量に混在す
ることによりアンバー系色調の現出に寄与するものと考
えられる。しかしSiが0.5wt％未満またはFeが0.05wt％
未満では、上記のSi粒子やＡ−Fe−Si金属間化合物等
の存在量が不足し所期するアンバー系の色調が得られな
い。逆に、Siが2.5wt％を超えまたはFeが0.5wt％を超え
ると上記金属間化合物等の適量範囲を超え、またはSi粒
子や金属間化合物の存在に不均衡を生じたりしてやはり
安定したアンバー系の色調を得ることができない。特に
好ましい含有範囲はSi:1.0〜1.8wt％、Fe:0.10〜0.30wt
％である。また、上記Si、Feの他、組織の微細化のため
Ti:0.005〜0.05wt％を含有せしめても良い。なお、Si、
FeあるいはさらにTi以外の残部組成は工業用ベースのア
ルミニウム程度で良い。First, in the composition of the aluminum alloy ingot used in the present invention, both Si and Fe play a role of producing an amber-based color tone by natural coloration. That is, Si is an appropriate amount of these as crystallized and precipitated simple Si particles or A-Fe-Si intermetallic compound, and Fe is an A-Fe-Si intermetallic compound or A 3 Fe intermetallic compound. Is considered to contribute to the appearance of the amber color tone. However, Si is less than 0.5 wt% or Fe is 0.05 wt%
If the amount is less than the above, the amount of the Si particles and the A-Fe-Si intermetallic compound or the like is insufficient, and the desired amber color tone cannot be obtained. Conversely, if the content of Si exceeds 2.5 wt% or the content of Fe exceeds 0.5 wt%, the content exceeds the appropriate range of the above-mentioned intermetallic compound or the like, or the imbalance occurs in the presence of Si particles or intermetallic compound, and the stability is still high. Amber color tone cannot be obtained. Particularly preferred content ranges are: Si: 1.0 to 1.8 wt%, Fe: 0.10 to 0.30 wt%
%. Also, in addition to the above Si and Fe,
Ti: 0.005 to 0.05 wt% may be contained. In addition, Si,
The remaining composition other than Fe or further Ti may be about the same as aluminum on an industrial basis.
次に、製造工程について説明すると、まず上記組成の
アルミニウム合金鋳塊に均熱処理を施す。この均熱処理
は鋳造組織を均一にして均一で安定したアンバー系色調
を得るために実施するものである。この目的のためには
均熱処理は加熱温度500℃以上、加熱時間５時間以上の
条件で行う必要がある。Next, the manufacturing process will be described. First, an aluminum alloy ingot having the above composition is subjected to soaking. This soaking treatment is performed in order to make the casting structure uniform and to obtain a uniform and stable invar-based color tone. For this purpose, the soaking treatment needs to be performed at a heating temperature of 500 ° C. or more and a heating time of 5 hours or more.
次に、通常の圧延材と同じく熱間圧延と冷間圧延を順
次的に実施するが、この発明の１つは、前記冷間圧延を
第一次と第二次に分け、第一次冷間圧延と第二次冷間圧
延との間において300℃以上の加熱処理を行い、かつ第
二次冷間圧延を圧下率15％以上で行い、第二次冷間圧延
後に加熱処理を実施することなく最終製品とするもので
ある。このような加熱処理及び二次冷間圧延により、材
料中の晶出及び析出単体Si粒子、Ａ−Fe−Si金属間化
合物、Ａ3Fe金属間化合物の分布混合状態がより均一
化され、安定したアンバー系色調の現出に寄与する。な
お、熱間圧延及び第一次冷間圧延の条件は色調にさほど
影響がないため特に限定しない。また、この発明の他の
１つは常法に従う熱間圧延、冷間圧延を行ったのち、冷
間圧延途中の中間焼鈍を実施することなく、200℃以上
の温度で加熱処理を行い最終製品とするものである。か
かる処理によっても安定したアンバー系色調が得られる
ものとなる。Next, hot rolling and cold rolling are sequentially performed in the same manner as in a normal rolled material. One of the present invention is that the cold rolling is divided into primary and secondary, Heat treatment of 300 ° C. or more is performed between cold rolling and secondary cold rolling, and secondary cold rolling is performed at a rolling reduction of 15% or more, and heat treatment is performed after the secondary cold rolling. The final product without any. By such heat treatment and secondary cold rolling, the distribution and mixing state of the crystallized and precipitated simple Si particles in the material, the A-Fe-Si intermetallic compound, and the A 3 Fe intermetallic compound are made more uniform and stable. It contributes to the appearance of amber-based tones. The conditions of the hot rolling and the first cold rolling are not particularly limited since they do not significantly affect the color tone. Further, another one of the present invention is to perform a hot rolling and a cold rolling according to a conventional method, and then perform a heat treatment at a temperature of 200 ° C. or more without performing intermediate annealing during the cold rolling, to thereby obtain a final product. It is assumed that. Even with such processing, a stable amber-based color tone can be obtained.
上記により製作した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、アンバー系色調を有す
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 produced as described above is subjected to anodizing treatment to develop a natural color, thereby obtaining a colored aluminum material having an amber color tone. The anodizing treatment may be performed by a sulfuric acid method or the like according to a conventional method.
発明の効果 この発明は上述の次第で、特定組成と製造条件との組
合せにより、晶出及び析出Si粒子とＡ−Fe−Si金属間
化合物及びＡ3Fe金属間化合物が合金中で適切な分布
混合状態となり、従ってこれを陽極酸化処理による一次
電解処理するのみで色むらのない均一かつ安定で美観に
優れた再現性の良いアンバー系の色調を得ることができ
る。従って、建材パネルや器物等表面装飾性を重要視さ
れるものの材料として好適なアルミニウム合金となしう
る。しかも、従来の二次電解着色処理と異なり一次電解
処理のみで所期するアンバー系色調を得ることができる
から、その処理が容易であり設備も少なくて済み処理時
間も短かくて済む。従ってコストも安価となしうる。Effect of the Invention According to the present invention, as described above, depending on the combination of the specific composition and the production conditions, the crystallized and precipitated Si particles and A-Fe-Si intermetallic compound and A 3 Fe intermetallic compound have an appropriate distribution in the alloy. The mixture is in a mixed state, and therefore, it is possible to obtain a uniform, stable, aesthetically pleasing amber-based color tone without color unevenness only by performing a primary electrolytic treatment by anodizing treatment. Therefore, it is possible to use an aluminum alloy that is suitable as a material for which surface decoration such as a building material panel or a vessel is important. Moreover, unlike the conventional secondary electrolytic coloring treatment, the desired amber-based color tone can be obtained only by the primary electrolytic treatment, so that the treatment is easy, the equipment is small, and the treatment time is short. Therefore, the cost can be reduced.
実施例 第１表に示す各種組成のアルミニウム合金鋳塊に同表
に示す各処理を順次的に実施して、各種の自然発色用ア
ルミニウム合金試験片を製作した。Examples Various treatments shown in Table 1 were sequentially performed on aluminum alloy ingots having various compositions shown in Table 1 to produce various aluminum alloy test pieces for natural coloring.
次に、上記により得られた各試験片につき、15％硫酸
浴中で、浴温:20℃、電流密度:100A/m2、電解時間:65分
の条件で硫酸陽極酸化処理を実施した。そして、処理後
の試験片の表面色調を目視観察したところ、本発明実施
品（N1〜８）は均一で色むらのない美麗なアンバー系色
調を呈していた。これに対し、合金組成が本発明範囲を
逸脱するNo9はごく薄い茶色であった。また製造工程が
本発明の条件を逸脱するNo10、11は色調にむらが生じ均
一なアンバー色が得られなかった。 Next, each test piece obtained as described above was subjected to sulfuric acid anodic oxidation treatment in a 15% sulfuric acid bath under the conditions of a bath temperature of 20 ° C., a current density of 100 A / m 2 , and an electrolysis time of 65 minutes. Then, when the surface color tone of the test piece after the treatment was visually observed, the products of the present invention (N1 to N8) exhibited a beautiful amber color tone without uniform color unevenness. On the other hand, No. 9 whose alloy composition deviated from the range of the present invention was very light brown. Further, in Nos. 10 and 11, where the production process deviated from the conditions of the present invention, the color tone was uneven and a uniform amber color was not obtained.
上記の結果から明らかなとおり、本発明によれば均一
で美麗なアンバー系色調が得られる合金の提供が可能で
あることを確認しえた。As is clear from the above results, it was confirmed that the present invention can provide an alloy capable of obtaining a uniform and beautiful amber color tone.
Claims (2)
有し、残部がアルミニウム及び不可避不純物からなるア
ルミニウム合金鋳塊に、500℃以上かつ５時間以上の均
熱処理を実施したのち、熱間圧延、第一次冷間圧延、30
0℃以上の加熱処理、圧下率15％以上の第二次冷間圧延
を順次的に実施するとともに、第二次冷間圧延後に加熱
処理を実施しないことを特徴とする自然発色用アルミニ
ウム合金の製造方法。1. An aluminum alloy ingot containing 0.5 to 2.5 wt% of Si and 0.05 to 0.5 wt% of Fe and the balance of aluminum and unavoidable impurities is subjected to a soaking heat treatment at 500 ° C. or more for 5 hours or more. After that, hot rolling, primary cold rolling, 30
A heat treatment at 0 ° C. or higher and a second cold rolling at a rolling reduction of 15% or more are sequentially performed, and the heat treatment is not performed after the second cold rolling. Production method.
有し、残部がアルミニウム及び不可避不純物からなるア
ルミニウム合金鋳塊に、500℃以上かつ５時間以上の均
熱処理を実施したのち、熱間圧延、冷間圧延を順次的に
実施し、冷間圧延途中の中間焼鈍を実施することなく、
その後200℃以上の温度で加熱処理を実施することを特
徴とする自然発色用アルミニウム合金の製造方法。2. An aluminum alloy ingot containing 0.5% to 2.5% by weight of Si and 0.05% to 0.5% by weight of Fe and the balance of aluminum and unavoidable impurities is subjected to a soaking heat treatment at 500 ° C. or more for 5 hours or more. After that, hot rolling, cold rolling is performed sequentially, without performing intermediate annealing during cold rolling,
Thereafter, a heat treatment is performed at a temperature of 200 ° C. or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1170041A JP2974328B2 (en) | 1989-06-30 | 1989-06-30 | Manufacturing method of aluminum alloy for natural coloring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1170041A JP2974328B2 (en) | 1989-06-30 | 1989-06-30 | Manufacturing method of aluminum alloy for natural coloring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0336245A JPH0336245A (en) | 1991-02-15 |
| JP2974328B2 true JP2974328B2 (en) | 1999-11-10 |
Family
ID=15897517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1170041A Expired - Lifetime JP2974328B2 (en) | 1989-06-30 | 1989-06-30 | Manufacturing method of aluminum alloy for natural coloring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2974328B2 (en) |
-
1989
- 1989-06-30 JP JP1170041A patent/JP2974328B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0336245A (en) | 1991-02-15 |
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