JPS6191395A - Slightly lustrous aluminum and aluminum alloy plates - Google Patents

Slightly lustrous aluminum and aluminum alloy plates

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Publication number
JPS6191395A
JPS6191395A JP21178184A JP21178184A JPS6191395A JP S6191395 A JPS6191395 A JP S6191395A JP 21178184 A JP21178184 A JP 21178184A JP 21178184 A JP21178184 A JP 21178184A JP S6191395 A JPS6191395 A JP S6191395A
Authority
JP
Japan
Prior art keywords
aluminum
plate
gloss
aluminum alloy
alloy plates
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
Application number
JP21178184A
Other languages
Japanese (ja)
Inventor
Yasunori Sasaki
佐々木 靖紀
Takeshi Inoue
武 井上
Hisashi Kadoyama
門山 尚志
Kenzo Omura
大村 健三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP21178184A priority Critical patent/JPS6191395A/en
Publication of JPS6191395A publication Critical patent/JPS6191395A/en
Pending legal-status Critical Current

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  • ing And Chemical Polishing (AREA)

Abstract

PURPOSE:To obtain a slightly lustrous Al plate by etching a bright or dull finished Al plate so as to specify the surface roughness. CONSTITUTION:A bright or dull finished Al or Al alloy plate is treated with an about 7% aqueous NaOH soln. at about 60 deg.C for about 5sec. The maximum surface roughness of the plate in every direction is regulated to >=2mum, preferably 2-16mum, and the number of projections of >=0.635mum height or recesses of >=0.635mum depth is regulated to >=30, preferably 30-400 in 25.4mm range. The treated Al or Al alloy plate is subjected to an alumite forming treatment to obtain the slightly lustrous Al or Al alloy plate which is easily matched in luster.

Description

【発明の詳細な説明】[Detailed description of the invention]

[産業上の利用分野1 ′  ・  “  −一本発明
は光沢の小さいアルミニウムおよびアルミニウム合金板
゛1関し、さらに詳しくは、□表面形状がブライト仕上
面<Wt面面上上面やグル仕上面のアルミニウムお上υ
アルミニウム合金板よりも、アルマイト処理後め光沢の
小さいナルミニウ・ムお−よりアルミニウム合金板に関
する。・′   □  ・[従来技術]    “  
□  ゛パ従来から、アルミニウムおよびフル・ミニ゛
ウム合金板は通常ブライト仕上面1、ダル仕上面による
表面形状とされ、耐蝕性や光沢を小さくするためにアル
マイト処理を行なってll染物等の外装材とし    
              、で使用す、るこユとが
行なわれている。 1、しかし、ことよう・な要求を5
−足させるために、7少ミニウムおよびアルミニラ4ム
合金の含有成分・の割合を変更ルたり、声な、例え、ば
、N、aOH水溶液等の鷹剤に長時1I11(,4G、
〜80℃の温度において、4−0−8分)浸漬して表面
を粗面化したりして光沢を小さくして使用しているが、
未だ上記に説明した要求を満たすことはで・きなかった
[Industrial Field of Application 1'・“-1 The present invention relates to aluminum and aluminum alloy plates with low gloss. Ogami υ
This invention relates to an aluminum alloy plate that has a lower gloss after alumite treatment than an aluminum alloy plate.・′ □ ・[Conventional technology] “
□ Traditionally, aluminum and full-minimum alloy plates have usually had a bright finish and a dull finish, and have been anodized to reduce corrosion resistance and gloss, and are used for the exterior of dyed products, etc. As a material
, Rukoyu is used in . 1. However, I have a very specific request 5.
- In order to increase
At a temperature of ~80℃, the surface is roughened by dipping (4-0-8 minutes) to reduce the gloss.
It has not yet been possible to satisfy the requirements explained above.

【発明が解決しよ)とする問題点】[Problems to be solved by the invention]

本発明(よ上記に説明し、た・、よ、うに、アルミニウ
ムおよびアルミチウム合金のフルフィト後の光沢を小さ
くするための従来技術の問題点を解決することを目的と
し、でなされたものであり、本発明者の鋭意硬究の結果
、現在使われているアルミニウムおよび7)鼾ミニウム
合金をそのま専用いて、エツチングを行なってもアルマ
イト処理時のムラが発生しない脱脂程度の、例えば、5
程度度のエッチングによりアルマイト処理後の光沢が小
さくなるアルミニウムおよ[/フルミニツム合金の表面
形状を見出し、光沢の小さいアルミニウムおよびアルミ
ニウム合金板を開発したのである。 [問題点を解決するための手段1 本発明に係る光沢の小さいアルミニウムおよびアルミニ
ウム合金の特徴とするところは、板の表面のあらゆる方
向の最大粗さくRmax)が2μII以上であり、かつ
、0.635μ麹以上の山の高さまたは谷の深さの数が
25.4順の間に30個以上(PPI)を有する表面形
状にある。 本発明に係る光沢の小さいアルミニウムおよびアルミニ
ウム合金板について詳細に説明する。 先ず、最大粗さくRmax)、25.411II11の
間にある高さまたは深さが0.635μm以上の山また
は谷の数(PPI)、プライト仕上面、ダル仕上面につ
いて説明する。 最大粗さくRmax)はt!41図に示す山の最高と谷
の段底との距JtH(μ曙)で示示される。 PPIは第1図に示すように、1=25.4mmの間に
h=o、635μm以上の○印で示す山、谷の数である
。 プライト仕上面CB、C)は鏡面仕上面ともいうことが
あり、アルミニウムおよびアルミニウム合金においては
通常用いられている表面仕上面である。 圧延方向に直角方向に測定→Ra+ax岬0、PP I
(h =0.635μ麹以上)幻0圧延方向に平行方向
に測定→Rmax40、P P I(h =0.635
μm以上)葎0グル仕上面(D、C)はアルミニウムお
よ1アルミニツム合金において従来から用いられている
表面仕上面である。 圧延方向に直角方向に測定→R■ax# 1 、5P 
P I (h =0.635μm以上)綱20圧延方向
に平行方向に測定→Rmax″、0.7PP I(h 
=0.635μ+a以上)ζ0次に、本発明に係る光沢
の小さいアルミニウムおよびアルミニウム合金において
、最大粗さくRmax)および25.4mmの間にある
0、635μm以上の高さ、深さの山、谷の数(PPI
)について説明する。 最大粗さくR−ax)はアルミニウムおよびアルミニウ
ム合金板表面のアルマイト処理後の光沢と関係があり、
最大粗さが大きい程板表面の種々の反射面が増大するた
めに光沢が小さくなり、最大粗さ2μm未満ではこの効
果は少なく、また、16μ哨を越えても光沢には変化が
ないが、生産性が劣るようになる。よって、最大粗さく
Rmax)は2〜16μmとすることが望ましい。 25.4市の間にある0、635μ麹の高さ、深さの山
、谷の数(PPI)は、板表面のR’mayが2μm以
上の場合、PPIはアルマイト処理後の光沢と関係があ
り、PPIが大きい程板表面の種々の反射面が増大する
ため光沢が小さくなり、30個未満ではこのような効果
は小さく、また、400個を越えても効果には変りがな
く、かえってロールによる転写能力や目詰りにより生産
性が劣る。 よって、P P I (h O,635Jjm以上)は
30−400個とすることが望ましい。 [実施例1 本発明に係る光沢の小さいアルミニウムおよびアルミニ
ウム合金の実施例を説明する。 実施例 代表例として、板厚1關のアルミニウム合金における最
大粗さく Rwax )および2.54IIIm開の0
.63 Sμm以上の高さの山または深ささの谷の数(
PPI)とアルマイト処理後の反射率を第1表に示す、
        ・ 本発明に係る合金材N001〜No、11、比較材No
、3.4.6は夫々の表面形状に合致するように板表面
にロールで圧延転写したLので、比較材No、1.2.
5は通常のプライト仕上面およびダル仕上面にロールに
より圧延し、最終調質処理後試験片を作製した。 このようにして作製された試験片を、本発明に係る合金
板を得るために、エツチングは7%NaOH水溶液で6
0℃の温度において5秒間浸漬し、水洗、中和(HNO
,水溶液により室温において3分浸漬)、水洗、フルマ
イ)処El<硫酸アルマイF、二次電解アルマイト)、
水洗、封孔処理の順に行なった。比較材については、エ
ツチングを7%NaOH水溶液で60℃の温度において
5分間浸漬した後は、上記の本発明に係る合金材の処理
と同じである。 このように処理された試験片の光沢度を反射率測定によ
り評価した。 この第1表より、本発明に係る合金材の表面形状を有す
るアルミニウム合金は、従来から使用されているブライ
ト仕上面やダル仕上面の表面形状を有する板(比較材N
o、1.2.5)に比べ反射率が小さくなっていること
がわかる。また、アルマイト処理法(硫酸アルマイト、
二次電解アルマイト)が変っても光沢が小さいことがわ
かる。 なお、上記アルミニウム合金以外のアルミニウムおよV
Fe、Mn、Cr%Cu、Mg%Zn、Si。 V、Zr、Ti、−B、Be、Ni、Nb、Ta等の元
素を含有したアルミニウム合金も使用でき、器物類のた
めの化学研磨を行ないアルマイト処理を行なっても同様
の効果が得られる。 入射角 : 45°。 て平行方向に測定。 [発明の効果1 以上説明したように、本発明に係る光沢の小さいアルミ
ニウムお上りアルミニウム合金板は上記、   の構成
を有しているものであるから、アルマイト処理後の光沢
が小さく、建築物等の外装に使用すると1枚毎の光沢合
せが容易に行なうことができるので外観が美麗となり、
さらに、製法に凪1てもエツチングを殆んど省略するこ
とができるので工程を短縮でき、さらに、コストの低下
にもなるという優れた効果を有するものである。
The present invention (as explained above) has been made with the object of solving the problems of the prior art for reducing the gloss of aluminum and aluminum alloys after fluorination, As a result of intensive research by the present inventors, we have found that currently used aluminum and 7) aluminum alloys can be used as is, and even if etched, there will be no unevenness during alumite treatment.For example, 5)
They discovered a surface shape of aluminum and [/Fulminitum alloys that reduces the gloss after alumite treatment due to a certain degree of etching, and developed aluminum and aluminum alloy plates with low gloss. [Means for Solving the Problems 1] The low gloss aluminum and aluminum alloy according to the present invention are characterized in that the maximum roughness (Rmax) of the plate surface in all directions is 2 μII or more, and 0. The surface shape has a peak height of 635μ or more or a valley depth of 25.4 or more (PPI) of 30 or more. The low gloss aluminum and aluminum alloy plates according to the present invention will be explained in detail. First, the maximum roughness (Rmax), the number of peaks or valleys (PPI) with a height or depth of 0.635 μm or more between 25.411II11, the prite finish surface, and the dull finish surface will be explained. The maximum roughness (Rmax) is t! It is indicated by the distance JtH (μ dawn) between the highest peak of the mountain and the bottom of the valley shown in Figure 41. As shown in FIG. 1, PPI is the number of peaks and valleys indicated by ○ marks of 635 μm or more, with h=o between 1=25.4 mm. The prite finished surface CB, C) is also referred to as a mirror finished surface, and is a commonly used surface finish for aluminum and aluminum alloys. Measured in the direction perpendicular to the rolling direction → Ra + ax cape 0, PP I
(h = 0.635 μ koji or more) Measured in the direction parallel to the phantom 0 rolling direction → Rmax 40, P P I (h = 0.635
μm or more) The 0-glue finished surface (D, C) is a surface finish conventionally used for aluminum and 1-aluminum alloys. Measured in the direction perpendicular to the rolling direction → R■ax# 1, 5P
P I (h = 0.635 μm or more) Steel 20 Measured in a direction parallel to the rolling direction → Rmax'', 0.7 PP I (h
= 0.635μ+a or more) ζ0 Next, in the low gloss aluminum and aluminum alloy according to the present invention, peaks and valleys with a height and depth of 0.635 μm or more between the maximum roughness Rmax) and 25.4 mm. number (PPI
) will be explained. The maximum roughness (R-ax) is related to the gloss of the aluminum and aluminum alloy plate surface after alumite treatment,
As the maximum roughness increases, the number of various reflective surfaces on the board surface increases and the gloss decreases.If the maximum roughness is less than 2μm, this effect is small, and even if the roughness exceeds 16μm, the gloss does not change. Productivity will decrease. Therefore, it is desirable that the maximum roughness (Rmax) is 2 to 16 μm. 25. The height, depth, number of peaks and valleys (PPI) of 0, 635μ koji between 4 cities, if R'may of the board surface is 2μm or more, PPI is related to the gloss after alumite treatment. The larger the PPI, the more various reflective surfaces on the board surface, which reduces the gloss.If the PPI is less than 30, this effect will be small, and if it exceeds 400, the effect will not change, and on the contrary, Productivity is poor due to the transfer ability and clogging caused by the roll. Therefore, it is desirable that P P I (h O, 635 Jjm or more) be 30-400. [Example 1] Examples of aluminum and aluminum alloys with low gloss according to the present invention will be described. As a representative example, the maximum roughness (Rwax) and 0 of 2.54IIIm in aluminum alloy of 1 sheet thickness are shown.
.. Number of peaks with a height of 63 S μm or more or valleys with a depth (
PPI) and the reflectance after alumite treatment are shown in Table 1.
- Alloy materials No. 1 to 11 according to the present invention, comparative material No.
, 3.4.6 are L rolled and transferred onto the plate surface with a roll so as to match the respective surface shapes, so comparative material No. 1.2.
No. 5 was rolled with a roll on a normal prite finish surface and a dull finish surface, and a test piece was prepared after final tempering treatment. In order to obtain the alloy plate according to the present invention, the test piece prepared in this way was etched with a 7% NaOH aqueous solution for 60 minutes.
Immerse for 5 seconds at a temperature of 0°C, wash with water, and neutralize (HNO
, immersion in an aqueous solution for 3 minutes at room temperature), washing with water, fluorite treatment El < sulfuric acid alumite F, secondary electrolytic alumite),
Washing with water and sealing were performed in this order. The comparative material was etched in a 7% NaOH aqueous solution at a temperature of 60° C. for 5 minutes, followed by the same treatment as the alloy material according to the invention described above. The glossiness of the thus treated specimen was evaluated by reflectance measurement. From this Table 1, it can be seen that the aluminum alloy having the surface shape of the alloy material according to the present invention is a plate having the surface shape of the conventionally used bright finish surface or dull finish surface (comparative material N
It can be seen that the reflectance is smaller than that of 1.2.5). In addition, alumite treatment method (sulfuric acid alumite,
It can be seen that the gloss is small even if the secondary electrolytic alumite) is changed. Note that aluminum other than the above aluminum alloys and V
Fe, Mn, Cr%Cu, Mg%Zn, Si. Aluminum alloys containing elements such as V, Zr, Ti, -B, Be, Ni, Nb, and Ta can also be used, and similar effects can be obtained by chemically polishing and alumite treatment for vessels. Incident angle: 45°. Measured in parallel direction. [Effect of the invention 1 As explained above, the low gloss aluminum aluminum alloy plate according to the present invention has the above configuration, so the gloss after alumite treatment is low and it is suitable for buildings, etc. When used on the exterior of a car, it is easy to match the gloss of each piece, resulting in a beautiful appearance.
Furthermore, even if the manufacturing method is calm, most of the etching can be omitted, so that the process can be shortened and the cost can be reduced, which is an excellent effect.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は最大粗さくR論ax)、25.4論−の間にあ
る0、635μm以上の高さの山または深さの谷の数(
PPI)を説明するための概略図である。 矛111
Figure 1 shows the number of peaks with a height of 0.635 μm or more or valleys with a depth of 0.635 μm or more between the maximum roughness (R theory ax) and 25.4 theory (
FIG. 2 is a schematic diagram for explaining PPI. spear 111

Claims (1)

【特許請求の範囲】[Claims] 板の表面のあらゆる方向の最大粗さ(Rmax)が2μ
m以上であり、かつ、0.635μm以上の山の高さま
たは谷の深さの数が25.4mmの間に30個以上を有
する表面形状であることを特徴とする光沢の小さいアル
ミニウムおよびアルミニウム合金板。
The maximum roughness (Rmax) of the plate surface in all directions is 2μ
Aluminum and aluminum with low gloss characterized by a surface shape having a height of 0.635 μm or more or a depth of 30 or more valleys within 25.4 mm. Alloy plate.
JP21178184A 1984-10-09 1984-10-09 Slightly lustrous aluminum and aluminum alloy plates Pending JPS6191395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21178184A JPS6191395A (en) 1984-10-09 1984-10-09 Slightly lustrous aluminum and aluminum alloy plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21178184A JPS6191395A (en) 1984-10-09 1984-10-09 Slightly lustrous aluminum and aluminum alloy plates

Publications (1)

Publication Number Publication Date
JPS6191395A true JPS6191395A (en) 1986-05-09

Family

ID=16611490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21178184A Pending JPS6191395A (en) 1984-10-09 1984-10-09 Slightly lustrous aluminum and aluminum alloy plates

Country Status (1)

Country Link
JP (1) JPS6191395A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672386A (en) * 1992-05-07 1994-03-15 Nakagawa Boshoku Kogyo Kk Shaft grounding device of ship

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147548A (en) * 1974-10-21 1976-04-23 Zojirushi Vacuum Bottle Co KOONKANETSUYOCHORIKIGUNO SEIHO
JPS53139530A (en) * 1977-05-11 1978-12-05 Matsushita Electric Ind Co Ltd Manufacture for reflective type screen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147548A (en) * 1974-10-21 1976-04-23 Zojirushi Vacuum Bottle Co KOONKANETSUYOCHORIKIGUNO SEIHO
JPS53139530A (en) * 1977-05-11 1978-12-05 Matsushita Electric Ind Co Ltd Manufacture for reflective type screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672386A (en) * 1992-05-07 1994-03-15 Nakagawa Boshoku Kogyo Kk Shaft grounding device of ship

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