JPH02285061A - Surface treatment by gold color of aluminum product - Google Patents
Surface treatment by gold color of aluminum productInfo
- Publication number
- JPH02285061A JPH02285061A JP10687489A JP10687489A JPH02285061A JP H02285061 A JPH02285061 A JP H02285061A JP 10687489 A JP10687489 A JP 10687489A JP 10687489 A JP10687489 A JP 10687489A JP H02285061 A JPH02285061 A JP H02285061A
- Authority
- JP
- Japan
- Prior art keywords
- brass
- film
- coating
- corrosion potential
- aluminum
- 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.)
- Granted
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 30
- 239000010931 gold Substances 0.000 title abstract description 8
- 229910052737 gold Inorganic materials 0.000 title abstract description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title abstract description 7
- 238000004381 surface treatment Methods 0.000 title description 6
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 55
- 239000010951 brass Substances 0.000 claims abstract description 55
- 239000011248 coating agent Substances 0.000 claims abstract description 52
- 238000000576 coating method Methods 0.000 claims abstract description 52
- 238000005260 corrosion Methods 0.000 claims abstract description 19
- 230000007797 corrosion Effects 0.000 claims abstract description 19
- 238000007751 thermal spraying Methods 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000003973 paint Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 15
- 239000003595 mist Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 7
- 239000010935 stainless steel Substances 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 239000004925 Acrylic resin Substances 0.000 abstract description 3
- 229920000178 Acrylic resin Polymers 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- 238000005422 blasting Methods 0.000 abstract description 2
- 239000011247 coating layer Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 6
- 238000007750 plasma spraying Methods 0.000 description 3
- 238000005480 shot peening Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000000630 rising effect Effects 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
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 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
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000002845 discoloration 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
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002343 gold Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
Abstract
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った。However, with this gold surface treatment method, it is difficult to prevent electrolytic corrosion because 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. There was a problem that aluminum would stand out on the surface of the brass coating.
また黄銅被膜表面は凹凸状になっているために、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った。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 oxidizes the brass and dulls the gold color.
（発明の目的）
本発明は、電食即ち黄銅被膜表面へのアルミ、ニラムの
浮き出しを防出できるとともに、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。(Purpose of the Invention) The present invention provides a method for treating the golden surface of aluminum products, which can prevent electrolytic corrosion, that is, the embossment of aluminum and nilam on the surface of a brass coating, and also prevent the brass from becoming oxidized and the gold color becoming dull. The purpose is to provide.
（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研磨し更にショット
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 with a corrosion potential between the corrosion potential of aluminum and brass is formed between the product surface and the brass coating by thermal spraying, the surface of the brass coating is polished to leave a slight unevenness, and then shot. 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 peening, and a paint is applied in a mist form to the surface of the brass coating, and then coated to form a coating.
（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。(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.
またミスト状の塗料はショットピーニング加工によりな
だらかとなっ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。従っ
て黄銅の酸化は防止される。Furthermore, since the mist-like paint satisfies the recesses in the surface of the brass coating, which has been made gentle by shot peening, 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。(Example) Embodiments of the present invention will be described below based on the drawings.
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
度となるようブラスト処理する。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５ＵＳ３１６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ｌｌＩ２表面に黄銅被
膜３を溶射により例えば５゜Ｏμ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るので好ましい
。1 to 5 are partial cross-sectional views sequentially showing each step of the method for treating an aluminum product with a golden color 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 blasting treatment so that the surface roughness becomes, for example, about 30μ. 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, 5US316 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, a brass coating 3 is formed on the surface of the stainless steel coating 112 by thermal spraying to a thickness of, for example, 5° Oμ. As the brass, for example, one made of 65% Cu and 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 preferable because it can suppress oxidation of brass.
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
凸状になっている。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
例えばパ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・ットピーニング加工を施す。このショ
ットピーニング加工は、ガラスピ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伏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, about 80% of the height of the unevenness (white portion in the figure) is removed. Polishing is performed, for example, by puff polishing. 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 unevenness with small undulations, 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
低下させた塗料を例えば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４
ａ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４ａ、
４ｂからなる塗料被膜４が形成される。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 diluted by a spray method such as an air spray method, a first paint layer 4a filling the recesses on the surface of the coating 3 is formed as shown in FIG. After drying the paint layer 4a, as shown in FIG.
By coating the same paint on a with a thickness of 100 to 200 μm, for example, by spraying or other painting methods,
A second paint layer 4b is formed. As a result, the paint layer 4a,
A paint film 4 consisting of 4b is formed. As the acrylic resin paint, for example, an acrylic urethane resin paint is used.
更に塗料波Ｍ＃４表面にフッ素樹脂系の塗料を塗装して
被膜５を形成する。なおフッ素樹脂系塗料被膜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。Further, a fluororesin-based paint is applied to the surface of the paint wave M#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.
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。As described above, the golden surface treatment of the cast article 1 made of aluminum is carried out.
このように金色に処理された鋳物品１について塩水を用
いた耐食試験（塩水噴霧試験）を行なったところ、２０
００時間以上も変色しないという結果を得た。これは１
０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。When 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, it was found that 20
The result was that there was no discoloration for over 00 hours. This is 1
It shows that it does not change color for about 0 years. The corrosion resistance was significantly improved compared to the conventional method, which changed color after about 250 hours.
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設置される塔である「バゴダ」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１４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。このようなバゴダ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 "Bagoda", which is a tower installed 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 the installation stand 11
It is fixed to the top with bolts 14, and the bolts 14 are 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 Bagoda 10 is related to religion, grandeur and splendor are required, and it is also required to be used for as long as possible. Golden surface treatment by method is more usefully applied. Of course, it goes without saying that the method of the present invention is usefully applied not only to pagodas but also to aluminum castings and products other than castings whose surfaces are desired to be treated with 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って生じるアルミ
ニウムの黄銅被膜３表面への浮き出しを防１１−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 rising 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
ョッ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っ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。しかもショットピー
ニング加工しているので、凹凸を起伏のなだらかなもの
にでき、ミスト状の塗料により四部を容品に埋めること
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 paint was applied to the surface of the brass coating 3 in a mist form, so that the concave parts on the surface of the brass coating 3 could be filled with the paint. It is possible to prevent the oxidation of the brass, that is, the dulling of the gold color, which is caused by air remaining between the brass and the paint film 4. Moreover, since it is shot peened, the unevenness can be made smooth and the four parts can be filled into the container with a mist of 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・・・フッ素樹脂系塗
料被膜
第１図
第２図
第３図
第４図
第５図
第６図1 to 5 are partial cross-sectional views sequentially showing each step of the gold-colored surface treatment method for aluminum products according to the present invention, and FIG.
The figure is a partial sectional view showing a pagoda, which is an example of an aluminum product. 1... Aluminum casting product, 2...
・Stainless steel coating, 3... Brass coating, 4... Paint coating, 4a, 4b... Paint layer, 5... Fluorine resin paint coating Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (1)
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ョットピーニング
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。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, there is a gap between the surface of the aluminum product and the brass coating. , a metal coating with a corrosion potential between that of aluminum and brass is formed by thermal spraying, the surface of the brass coating is polished to leave a slight unevenness, and then shot peened is applied to the surface of the brass coating. A method for treating a golden surface of an aluminum product, characterized in that a paint is applied 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 true JPH02285061A (en) | 1990-11-22 |
| JPH0317900B2 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7929858B2 (en) * | 1998-03-17 | 2011-04-19 | 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 |
Families Citing this family (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 |
-
1989
- 1989-04-26 JP JP10687489A patent/JPH02285061A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7929858B2 (en) * | 1998-03-17 | 2011-04-19 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0317900B2 (en) | 1991-03-11 |
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