JPH09143793A - Aluminum alloy surface treatment method - Google Patents
Aluminum alloy surface treatment methodInfo
- Publication number
- JPH09143793A JPH09143793A JP32246795A JP32246795A JPH09143793A JP H09143793 A JPH09143793 A JP H09143793A JP 32246795 A JP32246795 A JP 32246795A JP 32246795 A JP32246795 A JP 32246795A JP H09143793 A JPH09143793 A JP H09143793A
- Authority
- JP
- Japan
- Prior art keywords
- alumite
- aluminum alloy
- clear coating
- film
- coating
- 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 20
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004381 surface treatment Methods 0.000 title claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 45
- 238000000576 coating method Methods 0.000 claims abstract description 45
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 39
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000007743 anodising Methods 0.000 claims abstract description 5
- 238000005238 degreasing Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000004506 ultrasonic cleaning Methods 0.000 abstract description 14
- 239000011148 porous material Substances 0.000 abstract description 10
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005406 washing Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 238000007654 immersion Methods 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000013527 degreasing agent Substances 0.000 description 1
- 238000005237 degreasing agent Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- -1 sulfuric acid ions Chemical class 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
(57)【要約】
【課題】 アルミニウム合金に装飾性、耐食性を付与す
るためにアルマイト処理しその後にクリヤー塗装を行う
場合に、アルマイト皮膜上のクリヤー塗膜の透明性、光
沢性を十分に確保することができる表面処理方法を提供
する。
【解決手段】 ａ．被処理物の表面を前処理した後、
ｂ．硫酸約２０重量％の溶液中に浸漬し、１００〜２０
０Ａ／ｍ2の電流密度で陽極処理することによってアル
マイト皮膜を形成し、ｃ．このアルマイト皮膜を温水中
で超音波洗浄し、ｄ．さらにメチルアルコールに浸漬し
てから乾燥し、ｅ．クリヤー塗装を行う。すなわち、電
解浴（アルマイト処理浴）として硫酸浴を用い電流密度
を大にして皮膜の多孔質の孔径を大きくし、温浴の超音
波洗浄による硫酸イオンの除去を容易にした。さらにメ
タノール洗浄することにより透明性のよいクリヤー塗膜
を得るようにした。
(57) [Abstract] [Problem] When alumite treatment is applied to an aluminum alloy to impart decorativeness and corrosion resistance, and then clear coating is performed, sufficient transparency and gloss of the clear coating film on the alumite film are secured. Provided is a surface treatment method capable of SOLUTION: a. After pretreatment of the surface of the object to be treated,
b. Immerse in a solution of about 20% by weight of sulfuric acid,
Forming an alumite coating by anodizing at a current density of 0 A / m 2 , c. This alumite film is ultrasonically cleaned in warm water, d. Further dipped in methyl alcohol and dried, e. Clear coating is performed. That is, a sulfuric acid bath was used as an electrolytic bath (alumite treatment bath) to increase the current density to increase the pore size of the porous film and facilitate the removal of sulfate ions by ultrasonic cleaning of a warm bath. Further, it was washed with methanol to obtain a clear coating film having good transparency.
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、アルミニウムある
いはアルミニウム合金の表面をアルマイト処理した後
に、クリヤー塗装を施す表面処理方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment method of applying a clear coating after alumite-treating the surface of aluminum or an aluminum alloy.
【０００２】[0002]
【従来の技術】アルミニウムやアルミニウム合金（以下
単にアルミニウム合金という）の表面に装飾性や耐食性
を付与するための方法として、アルミニウム合金を硫酸
浴中に浸漬しアルマイト処理（陽極酸化処理）すること
が公知である。2. Description of the Related Art As a method for imparting decorativeness and corrosion resistance to the surface of aluminum or an aluminum alloy (hereinafter simply referred to as an aluminum alloy), the aluminum alloy is immersed in a sulfuric acid bath and anodized (anodized). It is known.
【０００３】ここに使用する硫酸浴の一般的な組成は、
硫酸１５〜２０重量％溶液であり、アルミニウム合金を
この浴に浸漬して陽極に接続し電解処理を行うことでア
ルミニウム合金の光沢あるアルマイト皮膜が得られるも
のである。またこのアルマイト処理を行った後に、この
アルマイト皮膜の耐久性を得るためにクリヤー塗装を行
うことも公知である。すなわちアルマイト皮膜の上に透
明なアクリル樹脂クリヤー塗料を塗布するものである。The general composition of the sulfuric acid bath used here is:
It is a solution containing 15 to 20% by weight of sulfuric acid, which is obtained by immersing an aluminum alloy in this bath, connecting it to an anode and performing electrolytic treatment to obtain a glossy alumite coating of the aluminum alloy. It is also known to perform clear coating in order to obtain the durability of the alumite coating after performing the alumite treatment. That is, a transparent acrylic resin clear paint is applied on the alumite film.
【０００４】[0004]
【従来技術の問題点】しかしながらこの従来の技術で
は、クリヤー塗装した塗膜の外観に曇りが生じ易く、時
には部分的にツブ状の白濁が生じるという問題があっ
た。その原因は次にように考えられている。すなわちの
陽極酸化処理（アルマイト処理）で得られたアルマイト
皮膜は多孔質であるため、電解液である硫酸がこの多孔
質の小孔内にできる空隙に残留し、クリヤー塗装した後
にその残留硫酸が小孔内から出てクリヤー塗膜に曇りや
白濁を生じさせる、というものである。However, this conventional technique has a problem that the clear coated film is liable to be fogged and sometimes partially has a turbid white turbidity. The cause is considered as follows. That is, since the anodized film obtained by the anodizing treatment (alumite treatment) is porous, sulfuric acid as an electrolytic solution remains in the voids formed in the small pores of the porous material, and the residual sulfuric acid is left behind after clear coating. It goes out from the small holes and causes clouding or cloudiness in the clear coating film.
【０００５】従ってこのクリヤー塗膜に曇りや白濁が生
じた場合は、再度表面処理を行う必要があった。この再
処理の一例としては、そのクリヤー塗膜を除去しアルマ
イト皮膜表面を露出させてからラッカーやシンナに浸漬
処理し、その後に９０〜１００℃の湯水洗浄を行った後
に再度クリヤー塗装を行う方法がある。しかしこの湯水
による洗浄にしても、多孔質の小孔内へ深く侵入した硫
酸を完全に除去するのは非常困難であり、クリヤー塗装
の曇りや白濁を確実に防止するのは困難であった。Therefore, when the clear coating film becomes cloudy or cloudy, it is necessary to perform the surface treatment again. As an example of this re-treatment, a method of removing the clear coating film to expose the surface of the alumite coating, immersing it in lacquer or thinner, and then performing hot-water washing at 90 to 100 ° C. and then performing clear coating again There is. However, even with this washing with hot water, it is extremely difficult to completely remove the sulfuric acid that has penetrated deeply into the porous small holes, and it is difficult to reliably prevent fogging and clouding of the clear coating.
【０００６】[0006]
【発明の目的】本発明はこのような事情に鑑みなされた
ものであり、アルミニウム合金に装飾性、耐食性を付与
するためにアルマイト処理しその後にクリヤー塗装を行
う場合に、アルマイト皮膜上のクリヤー塗膜の透明性、
光沢性を十分に確保することができる表面処理方法を提
供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in the case where an aluminum alloy is anodized for the purpose of imparting decorative properties and corrosion resistance, and then clear coating is performed, a clear coating on an alumite film is performed. Membrane transparency,
It is an object of the present invention to provide a surface treatment method capable of ensuring sufficient glossiness.
【０００７】[0007]
【発明の構成】本発明によればこの目的は、アルミニウ
ムまたはアルミニウム合金からなる被処理物の表面にア
ルマイト皮膜を形成した後、このアルマイト皮膜にクリ
ヤー塗装を行うアルミニウム合金の表面処理方法におい
て、 ａ．前記被処理物の表面を前処理した後、 ｂ．硫酸約２０重量％の溶液中に浸漬し、１００〜２０
０Ａ／ｍ2の電流密度で陽極処理することによってアル
マイト皮膜を形成し、 ｃ．このアルマイト皮膜を温水中で超音波洗浄し、 ｄ．さらにメチルアルコールに浸漬してから乾燥し、 ｅ．クリヤー塗装を行う、 ことを特徴とするアルミニウム合金の表面処理方法によ
り達成される。According to the present invention, an object of the present invention is to provide a surface treatment method for an aluminum alloy, comprising forming an alumite coating on the surface of an object to be treated made of aluminum or an aluminum alloy and then performing clear coating on the alumite coating. ． After pre-treating the surface of the object to be treated, b. Immerse in a solution of about 20% by weight of sulfuric acid,
Forming an alumite coating by anodizing at a current density of 0 A / m 2 , c. Ultrasonically clean the alumite film in warm water, d. Further dipping in methyl alcohol and drying, e. This is achieved by a method for surface treatment of an aluminum alloy, which is characterized by performing clear coating.
【０００８】すなわち本発明は、電解浴（アルマイト処
理浴）として硫酸浴を用い電流密度を大にして皮膜の多
孔質の孔径を大きくし、温浴の超音波洗浄による硫酸イ
オンの除去を容易にした。そしてさらにメタノール洗浄
することにより透明性のよいクリヤー塗膜塗膜を得るよ
うにしたものである。That is, according to the present invention, a sulfuric acid bath is used as an electrolytic bath (alumite treatment bath) to increase the current density to increase the pore size of the porous film and facilitate the removal of sulfate ions by ultrasonic cleaning of a warm bath. . Then, by further washing with methanol, a clear coating film having good transparency can be obtained.
【０００９】[0009]
【発明の実施の態様】以下に本発明の処理方法を具体的
に説明する。図１は本発明の一実施態様の処理工程を示
す図である。BEST MODE FOR CARRYING OUT THE INVENTION The processing method of the present invention will be specifically described below. FIG. 1 is a diagram showing the processing steps of one embodiment of the present invention.
【００１０】まずアルミニウム合金の被処理物を準備し
（図１のステップ１００）、これに脱脂やエッチング処
理など所定の前処理を施して表面に付着している汚れや
油脂類を除去する（ステップ１０２）。そして本発明に
係わる陽極酸化処理浴中で、アルミニウム合金を陽極に
接続しアルマイト処理を行う（ステップ１０４）。この
溶液は、約２０重量％の硫酸浴であり、この浴を用いて
孔径の大きい多孔質のアルマイト皮膜を形成するため、
電流密度を大きくて直流１００〜２００Ａ／ｍ2で処理
することがこの発明の１つの特徴である。First, an object to be treated of an aluminum alloy is prepared (step 100 in FIG. 1) and subjected to a predetermined pretreatment such as degreasing or etching to remove dirt and oils and fats adhering to the surface (step). 102). Then, in the anodizing bath according to the present invention, the aluminum alloy is connected to the anode and anodized (step 104). This solution is a sulfuric acid bath of about 20% by weight, which is used to form a porous alumite film having a large pore size.
It is one of the features of the present invention that the current density is increased and the direct current is processed at 100 to 200 A / m 2 .
【００１１】すなわち多孔質の孔内に入った硫酸液ある
いは硫酸イオンを次工程の洗浄で除去し易くするため、
孔径を大きくする。孔内の硫酸を除去するための洗浄工
程としては、４０℃〜５０℃の温水での超音波洗浄が適
する（ステップ１０６）。この洗浄工程ではさらにメタ
ノールに浸漬する。このメタノール浸漬により小孔内に
残留する硫酸をさらに確実に除去することができる（ス
テップ１０８）。その後のクリヤー塗装を行えば（ステ
ップ１１０）、透明で光沢感のある塗膜が得られる。That is, in order to make it easier to remove the sulfuric acid solution or the sulfuric acid ions that have entered the porous pores by the washing in the next step,
Increase the pore size. As a cleaning process for removing the sulfuric acid in the holes, ultrasonic cleaning with hot water at 40 ° C to 50 ° C is suitable (step 106). In this washing step, the substrate is further immersed in methanol. The sulfuric acid remaining in the small holes can be more surely removed by this methanol immersion (step 108). If clear coating is performed thereafter (step 110), a transparent and glossy coating film can be obtained.
【００１２】[0012]
【実施例１】アルミニウム合金２０２４材を被処理材物
とし、これを前処理としてメチレンクロライドに浸漬
し、３分間有機溶剤脱脂処理した。その後に、非エッチ
ングアルカリ脱脂剤浴中に１０分間浸漬してさらに脱脂
処理を行った。Example 1 An aluminum alloy 2024 material was used as a material to be treated, and as a pretreatment, it was immersed in methylene chloride and subjected to an organic solvent degreasing treatment for 3 minutes. Then, it was immersed in a non-etching alkaline degreasing agent bath for 10 minutes for further degreasing treatment.
【００１３】このように前処理した被処理物を、２０重
量％の硫酸浴に浸し、電流密度を３０〜２３０Ａ／ｍ2
に変化させつつ電解時間を１５〜８０分に変化させてア
ルマイト処理を行った。その後直ちに４０℃の温水で５
分間超音波洗浄し、さらにメチルアルコール液に浸漬し
て洗浄してから乾燥した。その上に熱硬化性のアクリル
樹脂クリヤーを塗布した。ここに用いるクリヤー塗料と
しては、例えば日本ペイント株式会社製造の商品名「ス
ーパーラック」が適する。この時のアルマイト処理条件
と塗膜の仕上がり外観を表１に示した。The object thus pretreated is immersed in a 20 wt% sulfuric acid bath and the current density is 30 to 230 A / m 2.
The alumite treatment was performed while changing the electrolysis time to 15 to 80 minutes while changing the temperature to 1. Immediately afterwards, 5 with warm water at 40 ° C
It was ultrasonically cleaned for a minute, further immersed in a methyl alcohol solution for cleaning, and then dried. A thermosetting acrylic resin clear was applied thereon. As the clear paint used here, for example, the product name “Super Rack” manufactured by Nippon Paint Co., Ltd. is suitable. Table 1 shows the alumite treatment conditions and the finished appearance of the coating film at this time.
【００１４】[0014]
【表１】 [Table 1]
【００１５】その結果、電流密度１００〜２００Ａｍ2
で、良好な透明性と光沢性のあるクリヤー塗膜が得られ
ることが解った。これは電流密度が高いとアルマイト皮
膜の孔径が大きくなり、孔内に入った硫酸液を洗浄によ
り除去し易くなり、そのため塗膜の透明性が向上するも
のと考えられる。As a result, the current density is 100 to 200 Am 2
It was found that a clear coating film having good transparency and gloss can be obtained. It is considered that when the current density is high, the pore diameter of the alumite coating becomes large, and the sulfuric acid solution that has entered the pores is easily removed by washing, and therefore the transparency of the coating film is improved.
【００１６】[0016]
【実施例２】実施例１と同様に脱脂のための前処理を行
った後に、一定の電流密度１００Ａ／ｍ2で、電解時間
を１５〜８０分に変化させてアルマイト処理した。その
後直ちに超音波洗浄水の温度が常温、４０℃、５０℃の
場合にそれぞれ超音波洗浄時間を１、３、５、１０、１
５分に変化させて洗浄した。その後、５秒間メタノール
に浸漬し、乾燥した後クリヤー塗装を行った。この時の
処理条件と塗膜仕上がり外観を表２に示した。Example 2 After pretreatment for degreasing was carried out in the same manner as in Example 1, the electrolysis time was changed to 15 to 80 minutes at a constant current density of 100 A / m 2 , and alumite treatment was performed. Immediately thereafter, when the temperature of the ultrasonic cleaning water is room temperature, 40 ° C. and 50 ° C., the ultrasonic cleaning time is 1, 3, 5, 10, 1 respectively.
It was changed to 5 minutes and washed. Then, it was immersed in methanol for 5 seconds, dried and then subjected to clear coating. Table 2 shows the processing conditions and the appearance of the finished coating film at this time.
【００１７】[0017]
【表２】 [Table 2]
【００１８】この結果、透明性塗光沢性のある良好なク
リヤー仕上げを得るには、電解時間が長くなるほど超音
波洗浄時間を長くする必要があることが解った。またこ
の超音波洗浄時間は、超音波洗浄水が常温の時アルマイ
ト皮膜１μ当たり０．５分以上行うと好ましい結果が得
られることも解った。As a result, it was found that in order to obtain a good clear finish having a transparent coating gloss, it is necessary to lengthen the ultrasonic cleaning time as the electrolysis time becomes longer. Further, it was also found that this ultrasonic cleaning time gives preferable results when the ultrasonic cleaning water is at room temperature for 0.5 minutes or more per 1 μm of the alumite coating.
【００１９】また、洗浄水の温度を上げることにより、
透明性のあるクリヤー仕上がり外観を得るために必要な
洗浄時間を短くできることも解った。このことから、ア
ルマイト処理でできた小孔に入った液あるいは硫酸イオ
ンを孔外に排出させるためには、超音波洗浄水の温度を
高くすることが有効であることが解る。例えば４０℃の
場合はアルマイト皮膜１μ当たり０．３分以上、５０℃
の場合はアルマイト皮膜１μ当たり０．１分以上超音波
洗浄を行うことで好ましい結果が得られる。なお６０℃
以上になると温湯中に気泡が発生し、超音波の伝波が妨
害されるので、温水は６０℃未満、好ましくは５０℃以
下にすべきである。By increasing the temperature of the washing water,
It was also found that the cleaning time required to obtain a transparent clear finish can be shortened. From this, it can be understood that it is effective to raise the temperature of the ultrasonic cleaning water in order to discharge the liquid or sulfate ion that has entered the small holes formed by the alumite treatment to the outside of the holes. For example, at 40 ° C, 0.3 min or more per 1μ of alumite coating, 50 ° C
In this case, a preferable result can be obtained by performing ultrasonic cleaning for 0.1 minute or more per 1 μ of the alumite film. 60 ℃
In the above case, bubbles are generated in the hot water and the propagation of ultrasonic waves is disturbed, so the temperature of the hot water should be lower than 60 ° C, preferably 50 ° C or lower.
【００２０】[0020]
【実施例４】実施例１の前処理により脱脂を行った後、
電流密度１００〜２００Ａ／ｍ2、電解時間２０〜３５
分にてアルマイト処理した。その後直ちに４０℃温水に
て５分間の超音波洗浄した後、５秒間のメタノール浸漬
を行ったものとメタノール浸漬をしないものについてク
リヤー塗装の仕上がり外観を比較した。この結果を表４
に示す。Example 4 After degreasing by the pretreatment of Example 1,
Current density 100-200 A / m 2 , electrolysis time 20-35
Anodized in minutes. Immediately thereafter, ultrasonic cleaning was carried out for 5 minutes in warm water at 40 ° C., and then the finish appearance of clear coating was compared between those subjected to methanol immersion for 5 seconds and those not subjected to methanol immersion. Table 4 shows the results.
Shown in
【００２１】[0021]
【表４】 [Table 4]
【００２２】その結果メタノール浸漬することで、超音
波洗浄水の水洗ジミが発生しなくなり外観上好ましい仕
上がり状態が得られた。As a result, the immersion in methanol did not cause water-washing stains in the ultrasonic cleaning water, resulting in a favorable finished appearance.
【００２３】[0023]
【発明の効果】請求項１の発明は以上のように、アルミ
ニウムまたはアルミニウム合金からなる被処理物を硫酸
２０重量％の溶液内で、電流密度１００〜２００Ａ／ｍ
2でアルマイト処理するから、アルマイト処理で表面に
できる多孔質のアルマイト皮膜の小孔を大きくすること
ができる。As described above, according to the first aspect of the present invention, an object to be treated made of aluminum or aluminum alloy is treated in a solution containing 20% by weight of sulfuric acid at a current density of 100 to 200 A / m.
Since the alumite treatment is performed in 2 , it is possible to enlarge the small pores of the porous alumite coating formed on the surface by the alumite treatment.
【００２４】このためこの小孔内に残留する硫酸を、そ
の後の温水による超音波洗浄とメチルアルコール浸漬に
より確実に除去することができる。従ってこのアルマイ
ト皮膜にクリヤー塗装を施せば、このクリヤー塗膜に曇
りやツブ状の白濁が発生せず、長期間に亘って透明で光
沢性のある美しい外観を保持させることが可能である。
また前処理は脱脂処理およびエッチング処理の少なくと
も一方を含む（請求項２）。ここに超音波洗浄は６０℃
以下特に４０〜５０℃の温水で行うのが望ましい。Therefore, the sulfuric acid remaining in the small holes can be reliably removed by subsequent ultrasonic cleaning with warm water and immersion in methyl alcohol. Therefore, by applying a clear coating to the alumite coating, it is possible to maintain a transparent, glossy and beautiful appearance for a long period of time without causing clouding or turbid white turbidity in the clear coating.
The pretreatment includes at least one of degreasing treatment and etching treatment (claim 2). Ultrasonic cleaning here 60 ℃
In particular, it is desirable to carry out with warm water of 40 to 50 ° C.
【図１】本発明の一実施態様の処理工程を示す図FIG. 1 is a diagram showing processing steps of an embodiment of the present invention.
Claims (2)
らなる被処理物の表面にアルマイト皮膜を形成した後、
このアルマイト皮膜にクリヤー塗装を行うアルミニウム
合金の表面処理方法において、 ａ．前記被処理物の表面を前処理した後、 ｂ．硫酸約２０重量％の溶液中に浸漬し、１００〜２０
０Ａ／ｍ2の電流密度で陽極処理することによってアル
マイト皮膜を形成し、 ｃ．このアルマイト皮膜を温水中で超音波洗浄し、 ｄ．さらにメチルアルコールに浸漬してから乾燥し、 ｅ．クリヤー塗装を行う、 ことを特徴とするアルミニウム合金の表面処理方法。1. After forming an alumite coating on the surface of an object to be treated made of aluminum or an aluminum alloy,
In the surface treatment method for an aluminum alloy, the clear coating is applied to the alumite coating, comprising: a. After pre-treating the surface of the object to be treated, b. Immerse in a solution of about 20% by weight of sulfuric acid,
Forming an alumite coating by anodizing at a current density of 0 A / m 2 , c. Ultrasonically clean the alumite film in warm water, d. Further dipping in methyl alcohol and drying, e. A method for surface treatment of an aluminum alloy, which comprises performing clear coating.
脂処理およびエッチング処理の少なくとも一方を含むア
ルミニウム合金の表面処理方法。2. The surface treatment method for an aluminum alloy according to claim 1, wherein the pretreatment includes at least one of degreasing treatment and etching treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32246795A JPH09143793A (en) | 1995-11-17 | 1995-11-17 | Aluminum alloy surface treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32246795A JPH09143793A (en) | 1995-11-17 | 1995-11-17 | Aluminum alloy surface treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09143793A true JPH09143793A (en) | 1997-06-03 |
Family
ID=18143978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32246795A Pending JPH09143793A (en) | 1995-11-17 | 1995-11-17 | Aluminum alloy surface treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09143793A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416072B1 (en) * | 1998-08-10 | 2002-07-09 | Honda Giken Kogyo Kabushiki Kaisha | Vehicle body frame for motorcycle and it fabrication method |
| KR100575299B1 (en) * | 2003-07-01 | 2006-04-28 | 광성전자(주) | method for making outer decoration product with anodized and tilted glossy faces and the product made by the same |
| JP2013082994A (en) * | 2011-09-29 | 2013-05-09 | Denka Himaku Inc | Method for manufacturing colored aluminum product or colored aluminum alloy product, pigment composition for coloration, and colored aluminum product or colored aluminum alloy product |
| JP2013173628A (en) * | 2012-02-23 | 2013-09-05 | Sumitomo Electric Ind Ltd | Method for producing glass preform for optical fiber and method for cleaning metal mesh |
| JP2013237888A (en) * | 2012-05-14 | 2013-11-28 | Denka Himaku Inc | Printed product, method for producing the same, and medium to be printed |
-
1995
- 1995-11-17 JP JP32246795A patent/JPH09143793A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416072B1 (en) * | 1998-08-10 | 2002-07-09 | Honda Giken Kogyo Kabushiki Kaisha | Vehicle body frame for motorcycle and it fabrication method |
| US6796030B2 (en) | 1998-08-10 | 2004-09-28 | Honda Giken Kogyo Kabushiki Kaisha | Method of fabricating a vehicle body frame for a motorcycle |
| KR100575299B1 (en) * | 2003-07-01 | 2006-04-28 | 광성전자(주) | method for making outer decoration product with anodized and tilted glossy faces and the product made by the same |
| JP2013082994A (en) * | 2011-09-29 | 2013-05-09 | Denka Himaku Inc | Method for manufacturing colored aluminum product or colored aluminum alloy product, pigment composition for coloration, and colored aluminum product or colored aluminum alloy product |
| JP2013173628A (en) * | 2012-02-23 | 2013-09-05 | Sumitomo Electric Ind Ltd | Method for producing glass preform for optical fiber and method for cleaning metal mesh |
| JP2013237888A (en) * | 2012-05-14 | 2013-11-28 | Denka Himaku Inc | Printed product, method for producing the same, and medium to be printed |
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