JPH0317900B2 - - Google Patents
Info
- Publication number
- JPH0317900B2 JPH0317900B2 JP10687489A JP10687489A JPH0317900B2 JP H0317900 B2 JPH0317900 B2 JP H0317900B2 JP 10687489 A JP10687489 A JP 10687489A JP 10687489 A JP10687489 A JP 10687489A JP H0317900 B2 JPH0317900 B2 JP H0317900B2
- Authority
- JP
- Japan
- Prior art keywords
- brass
- coating
- aluminum
- paint
- brass 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.)
- Expired
Links
- 229910001369 Brass Inorganic materials 0.000 claims description 44
- 239000010951 brass Substances 0.000 claims description 44
- 239000011248 coating agent Substances 0.000 claims description 44
- 238000000576 coating method Methods 0.000 claims description 44
- 229910052782 aluminium Inorganic materials 0.000 claims description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 29
- 239000003973 paint Substances 0.000 claims description 29
- 238000005260 corrosion Methods 0.000 claims description 14
- 230000007797 corrosion Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 238000007751 thermal spraying Methods 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 238000005480 shot peening Methods 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007750 plasma spraying Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、アルミニウム製品の表面を金色に処
理する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for treating the surface of an aluminum product to a golden color.
（従来技術及びその問題点）
外装用の建築工芸品等では、荘重さ、華麗さを
醸し出すためにその表面を金色に処理することが
よく行なわれている。例えば、軽量で、加工しや
すいアルミニウムからなる建築工芸品等では、そ
の表面に溶射により黄銅被膜を形成し、黄銅被膜
の表面に透明な塗料被膜を形成することにより表
面を金色に処理していた。(Prior Art and its Problems) In architectural crafts for exterior use, the surface is often treated with gold color in order to exude grandeur and splendor. For example, for architectural crafts made of aluminum, which is lightweight and easy to process, a brass coating is formed on the surface by thermal spraying, and a transparent paint coating is formed on the surface of the brass coating to give the surface a golden color. .
しかしながらこのような金色表面処理方法で
は、アルミニウムと黄銅の腐蝕電位即ち金属の腐
蝕傾向を示す電極電位に大きな差があるために、
電食を防ぐのが困難であり、溶射により多孔質に
形成されている黄銅被膜の表面にアルミニウムが
浮き出てしまうという問題があつた。また黄銅被
膜表面は凹凸状になつているために、黄銅被膜と
塗料被膜との間に空気が残留し、これにより黄銅
が酸化されて金色がくすんでしまうという問題が
あつた。 However, in such a golden surface treatment method, there is a large difference in the corrosion potential between aluminum and brass, that is, the electrode potential that indicates the corrosion tendency of metals.
It is difficult to prevent electrolytic corrosion, and there is a problem in that aluminum stands out on the surface of the porous brass coating formed by thermal spraying. Furthermore, since the surface of the brass coating is uneven, there is a problem in that air remains between the brass coating and the paint coating, which causes the brass to be oxidized and the gold color to become dull.
（発明の目的）
本発明は、電食即ち黄銅被膜表面へのアルミニ
ウムの浮き出しを防止できるとともに、黄銅が酸
化して金色がくすんでしまうのを防止できるアル
ミニウム製品の金色表面処理方法を提供すること
を目的とする。(Object of the Invention) The present invention provides a method for treating the golden surface of aluminum products, which can prevent electrolytic corrosion, that is, embossment of aluminum on the surface of a brass coating, and also prevent the brass from oxidizing and becoming dull in gold color. With the goal.
（発明の構成）
本発明は、アルミニウム製品の表面上に溶射に
より黄銅被膜を形成し、黄銅被膜の表面に透明な
塗料被膜を形成することによりアルミニウム製品
の表面を金色に処理する方法において、アルミニ
ウム製品表面と黄銅被膜との間に、アルミニウム
の腐蝕電位と黄銅の腐蝕電位との間の腐蝕電位を
有する金属の被膜を溶射により形成し、黄銅被膜
の表面を少し凹凸を残すように研磨し更にシヨツ
トピーニング加工し、黄銅被膜の表面に塗料をミ
スト状で塗装した後に被覆させて塗料被膜を形成
するようにしたことを特徴とするアルミニウム製
品の金色表面処理方法である。(Structure of the Invention) The present invention provides a method for treating the surface of an aluminum product to a golden color by forming a brass coating on the surface of the aluminum product by thermal spraying and forming a transparent paint film on the surface of the brass coating. A metal coating having a corrosion potential between that of aluminum and brass is formed between the product surface and the brass coating by thermal spraying, and the surface of the brass coating is polished to leave a slight unevenness. This is a method for treating a golden surface of an aluminum product, which is characterized in that the surface of a brass coating is subjected to shot peening, and then coated with a paint in the form of a mist to form a paint film.
（作用）
アルミニウムの腐蝕電位と黄銅の腐蝕電位との
間の腐蝕電位を有する金属の被膜により、アルミ
ニウムが黄銅被膜表面に浮き出るのが防止され
る。またミスト状の塗料はシヨツトピーニング加
工によりなだらかとなつた黄銅被膜表面の凹部に
良好に埋まるため、黄銅被膜と塗料被膜との間に
空気は残留しない。従つて黄銅の酸化は防止され
る。(Function) The metal coating having a corrosion potential between that of aluminum and that of brass prevents aluminum from rising to the surface of the brass coating. Furthermore, since the mist-like paint is well filled in the recesses on the surface of the brass coating, which have been made gentle by the shot peening process, no air remains between the brass coating and the paint coating. Oxidation of the brass is thus prevented.
（実施例）
以下、本発明の実施例を図に基づいて説明す
る。第１図ないし第５図は本発明によるアルミニ
ウム製品の金色表面処理方法の各工程を順に示す
断面部分図である。第１図において、１はアルミ
ニウム製の鋳物品である。まず鋳物品１の表面を
表面粗さが例えばRa30μ程度となるようプラスト
処理する。次に、鋳物品１表面に、アルミニウム
の腐蝕電位と黄銅の腐蝕電位との間の腐蝕電位を
有する金属例えばステンレス鋼の被膜２を溶射に
より例えば300μの厚さに形成する。ステンレス
鋼としては例えばSUS316を用いる。また溶射と
しては例えばプラズマ溶射、アーク溶射、フレー
ム溶射等を採用できる。次に、ステンレス被膜２
表面に黄銅被膜３をを溶射により例えば50μの厚
さに形成する。黄銅としては例えばCu65％、
Zn35％からなるものを用いる。溶射としては例
えばプラズマ溶射、アーク溶射、フレーム溶射等
を採用できるが、ワイヤー式のプラズマ溶射によ
れば黄銅の酸化を抑制できので好ましい。黄銅被
膜３は溶射により形成されるためにその表面が凹
凸状になつている。(Example) Hereinafter, an example of the present invention will be described based on the drawings. 1 to 5 are partial cross-sectional views sequentially showing each step of the method for treating a golden surface of an aluminum product according to the present invention. In FIG. 1, 1 is a cast article made of aluminum. First, the surface of the cast article 1 is subjected to a blast treatment so that the surface roughness becomes, for example, about Ra30μ. Next, a coating 2 of a metal such as stainless steel having a corrosion potential between that of aluminum and that of brass is formed on the surface of the cast article 1 by thermal spraying to a thickness of, for example, 300 μm. For example, SUS316 is used as the stainless steel. Further, as the thermal spraying, for example, plasma spraying, arc thermal spraying, flame thermal spraying, etc. can be adopted. Next, stainless steel coating 2
A brass coating 3 is formed on the surface by thermal spraying to a thickness of, for example, 50 μm. For example, brass is Cu65%,
A material consisting of 35% Zn is used. For example, plasma spraying, arc spraying, flame spraying, etc. can be used as thermal spraying, but wire-type plasma spraying is preferred because it can suppress oxidation of the brass. Since the brass coating 3 is formed by thermal spraying, its surface is uneven.
次に第２図に示すように、黄銅被膜３表面にそ
の凹凸を少し残すように研磨を施す。例えば図に
示すように凹凸の高さの80％程度（図中白抜き部
分）を削る。研磨は例えばバフ研磨により行な
う。そして研磨された黄銅被膜３表面にシヨツト
ピーニング加工を施す。このシヨツトピーニング
加工は、ガラスビーズより重いステンレスビーズ
を用いて行なう方が、表面をち密化できるので好
ましい。これにより黄銅被膜３表面は第３図に示
すように、なだらかで小さな起状の凹凸状に加工
される。 Next, as shown in FIG. 2, the surface of the brass coating 3 is polished so as to leave some of the unevenness. For example, as shown in the figure, remove about 80% of the height of the unevenness (the white part in the figure). Polishing is performed, for example, by buffing. Then, shot peening is applied to the surface of the polished brass coating 3. It is preferable to carry out this shot peening process using stainless steel beads, which are heavier than glass beads, because the surface can be densified. As a result, the surface of the brass coating 3 is processed to have a gentle and small unevenness as shown in FIG.
次に黄銅被膜３表面に、透明度の高い例えばア
クリル樹脂系の塗料をミスト状で塗装する。即ち
希釈して粘度を低下させた塗料をエアースプレー
法等のスプレー法により塗装することにより、第
４図に示すように被膜３表面の凹部を埋めた第１
の塗料層４ａを形成する。そして塗料層４ａを乾
燥後、第５図に示すように塗料層４ａ上に同じ塗
料をスプレー法その他の塗装方法により例えば
100〜200μの厚さに被覆させることにより、第２
の塗料層４ｂを形成する。これにより塗料層４
ａ，４ｂからなる塗料被膜４が形成されれる。ア
クリル樹脂系の塗料としては例えばアクリルウレ
タン樹脂系の塗料を用いる。 Next, a highly transparent paint such as acrylic resin is applied to the surface of the brass coating 3 in the form of a mist. That is, by applying a paint whose viscosity has been reduced by diluting it by a spray method such as an air spray method, a first layer is formed that fills the recesses on the surface of the coating 3, as shown in FIG.
A paint layer 4a is formed. After drying the paint layer 4a, as shown in FIG.
By coating it to a thickness of 100 to 200μ, the second
A paint layer 4b is formed. As a result, paint layer 4
A paint film 4 consisting of a and 4b is formed. As the acrylic resin paint, for example, an acrylic urethane resin paint is used.
更に塗料被膜４表面にフツ素樹脂系の塗料を塗
装して被膜５を形成する。なおフツ素樹脂系塗料
被膜５は必ずしも形成する必要はないが、より耐
食性が要求される場合には形成するのが好まし
い。以上のようにしてアルミニウム製の鋳物品１
の金色表面処理が行なわれる。 Further, a fluororesin-based paint is applied to the surface of the paint film 4 to form a film 5. Although it is not necessary to form the fluororesin paint film 5, it is preferable to form it when higher corrosion resistance is required. Casting article 1 made of aluminum as described above
A gold-colored surface treatment is performed.
このように金色に処理された鋳物品１によいて
塩水を用いた耐食試験（塩水噴霧試験）を行なつ
たところ、2000時間以上も変色しないという結果
を得た。これは10年程度は変色しないことを示
す。従来方法による場合では250時間程度で変色
していたのに比して大幅に耐食性が向上した。 A corrosion resistance test using salt water (salt water spray test) was conducted on the cast article 1 treated to give it a golden color as described above, and the result was that it did not change color for more than 2000 hours. This indicates that the color will not change for about 10 years. Compared to the conventional method, which changed color after about 250 hours, the corrosion resistance was significantly improved.
このような金色表面処理が施される鋳物品１と
しては例えば納骨堂の屋上に配置される塔である
「パゴダ」と称されるものがある。第６図はパゴ
ダ１０を示す部分断面図である。１１はコンクリ
ートの設置台、１２は鋳物の本体、１３は鋳物の
塔部である。本体１２は設置台１１上にボルト１
４で固定されており、ボルト１４は鋳物のカバー
１５により覆われている。塔部１３は鋳物の段部
１６に溶接され、段部１６は本体１２にボルト固
定された段部１７に溶接されている。このような
パゴダ１０は、宗教に関わるものであるために荘
重さ、華麗さがより要求されるものであり、また
可能な限り長い年月日の使用が要求されるもので
あるので、本発明の方法による金色表面処理がよ
り有用に適用される。もちろんパゴダに限らず、
表面を金色に処理することが望まれるアルミニウ
ム製の鋳物品や鋳物以外の製品についても本発明
の方法が有用に適用されることは言うまでもな
い。 An example of a cast article 1 to which such a golden surface treatment is applied is one called a "pagoda," which is a tower placed on the roof of an ossuary. FIG. 6 is a partial sectional view showing the pagoda 10. 11 is a concrete installation stand, 12 is a casting body, and 13 is a casting tower. The main body 12 is mounted on the installation stand 11 with bolts 1
4, and the bolt 14 is covered with a cast cover 15. The tower section 13 is welded to a step 16 of the casting, and the step 16 is welded to a step 17 bolted to the body 12. Since such a pagoda 10 is related to religion, grandeur and splendor are required, and the pagoda 10 is required to be used for as long as possible. Golden surface treatment by the method described above is more usefully applied. Of course, it is not limited to pagodas,
It goes without saying that the method of the present invention can be usefully applied to aluminum castings and products other than castings whose surfaces are desired to be treated to have a golden color.
（発明の効果）
以上のように本発明によれば、アルミニウム製
の鋳物品１の表面と黄銅被膜３との間に、アルミ
ニウムの腐蝕電位と黄銅の腐蝕電位との間の腐蝕
電位を有するステンレス鋼からなる被膜２を形成
したので、アルミニウムと黄銅との腐蝕電位の差
が大きいことによつて生じるアルミニウムの黄銅
被膜３表面への浮き出しを防止することができ
る。(Effects of the Invention) As described above, according to the present invention, a stainless steel having a corrosion potential between the corrosion potential of aluminum and that of brass is formed between the surface of the cast article 1 made of aluminum and the brass coating 3. Since the coating 2 made of steel is formed, it is possible to prevent aluminum from coming out onto the surface of the brass coating 3, which is caused by a large difference in corrosion potential between aluminum and brass.
また黄銅被膜３表面を少し凹凸を残すよう研磨
し更にシヨツトピーニング加工し、黄銅被膜３表
面に塗料をミスト状で塗装したので、黄銅被膜３
表面の凹部を塗料で埋めることができ、黄銅被膜
３と塗料被膜４との間に空気が残留することによ
つて生じる黄銅の酸化、即ち金色がくすむのを防
止することができる。しかもシヨツトピーニング
加工しているので、凹凸を起状のなだらかなもの
にでき、ミスト状の塗料により凹部を容易に埋め
ることができる。更に黄銅被膜３表面を少し凹凸
を残すよう研磨しているので、光を乱反射させて
光沢のある金色を醸し出すことができる。 In addition, the surface of the brass coating 3 was polished to leave a slight unevenness, and then shot peened, and a mist of paint was applied to the surface of the brass coating 3.
The recesses on the surface can be filled with paint, and oxidation of the brass, that is, dulling of the gold color, which is caused by air remaining between the brass coating 3 and the paint coating 4, can be prevented. Moreover, since it is shot peened, the unevenness can be made into a gentle shape, and the recessed parts can be easily filled with mist-like paint. Furthermore, since the surface of the brass coating 3 is polished to leave some unevenness, light can be diffusely reflected and a shiny golden color can be created.
第１図ないし第５図は本発明によるアルミニウ
ム製品の金色表面処理方法の各工程を順に示す断
面部分図、第６図はアルミニウム製品の一例であ
るパゴダを示す部分断面図である。１……アルミ
ニウム製の鋳物品、２……ステンレス被膜、３…
…黄銅被膜、４……塗料被膜、４ａ，４ｂ……塗
料層、５……フツ素樹脂系塗料被膜。
1 to 5 are partial cross-sectional views sequentially showing each step of the method for treating a golden surface of an aluminum product according to the present invention, and FIG. 6 is a partial cross-sectional view showing a pagoda as an example of an aluminum product. 1... Aluminum casting product, 2... Stainless steel coating, 3...
...brass coating, 4...paint film, 4a, 4b...paint layer, 5...fluororesin paint film.
Claims (1)
被膜を形成し、黄銅被膜の表面に透明な塗料被膜
を形成することによりアルミニウム製品の表面を
金色に処理する方法において、アルミニウム製品
表面と黄銅被膜との間に、アルミニウムの腐蝕電
位と黄銅の腐蝕電位との間の腐蝕電位を有する金
属の被膜を溶射により形成し、黄銅被膜の表面を
少し凹凸を残すよう研磨し更にシヨツトピーニン
グ加工し、黄銅被膜の表面に塗料をミスト状で塗
装した後に被覆させて塗料被膜を形成するように
したことを特徴とするアルミニウム製品の金色表
面処理方法。1. In a method of forming a brass coating on the surface of an aluminum product by thermal spraying and treating the surface of the aluminum product with a golden color by forming a transparent paint film on the surface of the brass coating, the distance between the surface of the aluminum product and the brass coating is First, a metal coating with a corrosion potential between that of aluminum and that of brass is formed by thermal spraying, and the surface of the brass coating is polished to leave a slight unevenness and then shot peened. A method for treating a golden surface of an aluminum product, characterized in that the surface is coated with a paint in a mist form and then coated to form a paint film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10687489A JPH02285061A (en) | 1989-04-26 | 1989-04-26 | Surface treatment by gold color of aluminum product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10687489A JPH02285061A (en) | 1989-04-26 | 1989-04-26 | Surface treatment by gold color of aluminum product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02285061A JPH02285061A (en) | 1990-11-22 |
| JPH0317900B2 true JPH0317900B2 (en) | 1991-03-11 |
Family
ID=14444680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10687489A Granted JPH02285061A (en) | 1989-04-26 | 1989-04-26 | Surface treatment by gold color of aluminum product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02285061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4583314B2 (en) * | 2006-02-03 | 2010-11-17 | ジヤトコ株式会社 | Rotation matching shift control device for automatic transmission |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6803961B1 (en) * | 1998-03-17 | 2004-10-12 | Nikon Corporation | Image-capturing apparatus, electronic still camera, method and apparatus for processing mounting surface of image-capturing apparatus and metal member contact structure |
| CN110331359A (en) * | 2019-08-12 | 2019-10-15 | 天津海之星水下机器人有限公司 | A kind of surface treatment method for thermal spraying inorganic coating |
-
1989
- 1989-04-26 JP JP10687489A patent/JPH02285061A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4583314B2 (en) * | 2006-02-03 | 2010-11-17 | ジヤトコ株式会社 | Rotation matching shift control device for automatic transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02285061A (en) | 1990-11-22 |
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