JP2742934B2 - Cleaning equipment for chemical conversion coatings on aluminum alloy workpieces - Google Patents
Cleaning equipment for chemical conversion coatings on aluminum alloy workpiecesInfo
- Publication number
- JP2742934B2 JP2742934B2 JP19637589A JP19637589A JP2742934B2 JP 2742934 B2 JP2742934 B2 JP 2742934B2 JP 19637589 A JP19637589 A JP 19637589A JP 19637589 A JP19637589 A JP 19637589A JP 2742934 B2 JP2742934 B2 JP 2742934B2
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- aluminum alloy
- washing
- water
- chemical conversion
- 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 - Fee Related
Links
Landscapes
- Coating Apparatus (AREA)
- Chemical Treatment Of Metals (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） この発明は、アルミニウム合金製被塗装物に施された
化成被膜を洗浄する際に使用される装置に関する。Description: Object of the Invention (Industrial application field) The present invention relates to an apparatus used for cleaning a chemical conversion coating applied to an aluminum alloy workpiece.
（従来の技術） アルミニウム合金製品、例えば、車両用ホイールに塗
装を施す場合、主塗装の付着を良くするため、及び、耐
湿性を向上させるために、前処理として物品の表面に化
成被膜を施している。そして、この化成被膜を施した製
品を洗浄した後に、主塗装を施すわけである。(Prior Art) When coating aluminum alloy products, for example, wheels for vehicles, a conversion coating is applied to the surface of the article as a pretreatment in order to improve adhesion of the main coating and improve moisture resistance. ing. Then, after the product provided with the chemical conversion coating is washed, the main coating is applied.
この洗浄の方法として、従来にあっては、洗浄水を洗
浄部とイオン交換樹脂部材との間に循環させていた。As a method of this washing, conventionally, washing water has been circulated between the washing section and the ion exchange resin member.
（発明が解決しようとする課題） 発明者は前記洗浄において、洗浄されるべきアルミニ
ウム合金製品における主塗装の二次密着を良くする手段
として、洗浄水の成分に着目し、鋭意研究した。(Problem to be Solved by the Invention) In the above-mentioned cleaning, the inventor focused on the component of the cleaning water as a means for improving the secondary adhesion of the main coating on the aluminum alloy product to be cleaned, and made intensive studies.
この発明の課題は、前記アルミニウム合金製品におけ
る主塗装の二次密着を良くし、当該製品の耐水性および
耐湿性を向上させる洗浄水を提供することである。An object of the present invention is to provide cleaning water that improves secondary adhesion of a main coating in the aluminum alloy product and improves water resistance and moisture resistance of the product.
前記課題を達成するために、この発明の洗浄装置にお
いては、洗浄部とイオン交換樹脂部材との間を洗浄水が
循環し、前記洗浄部においてアルミニウム合金製被塗装
物に施された化成被膜を洗浄する化成被膜用洗浄装置に
おいて、 前記洗浄水のSi含有量を100ppm以下としたものであ
る。In order to achieve the above object, in the cleaning device of the present invention, the cleaning water circulates between the cleaning unit and the ion exchange resin member, and the conversion coating applied to the aluminum alloy workpiece in the cleaning unit. In the chemical conversion coating cleaning apparatus for cleaning, the Si content of the cleaning water is set to 100 ppm or less.
この発明に係る洗浄装置は上記のように構成されてい
るため、即ち、洗浄水のSi含有量を100ppm以下としたた
め、アルミニウム合金製被塗装物の表面に付着したSi成
分を除去しやすいものである。Since the cleaning device according to the present invention is configured as described above, that is, since the Si content of the cleaning water is 100 ppm or less, it is easy to remove the Si component attached to the surface of the aluminum alloy workpiece. is there.
なお、前記洗浄水のSi含有量を25ppm以下とすれば、
アルミニウム合金製被塗装物の表面に付着したSi成分を
より一層除去しやすいものである。If the Si content of the washing water is 25 ppm or less,
The Si component adhering to the surface of the aluminum alloy workpiece is more easily removed.
（発明の実施例） 以下、第１図に基づいて、この発明の実施例を説明す
る。(Embodiment of the Invention) Hereinafter, an embodiment of the present invention will be described with reference to FIG.
図において、Ｆは洗浄装置Ｗの流路であり、循環式に
構成されている。この流路ＦにはポンプＰの作動によっ
て矢印（点線矢印）方向に洗浄水が回流する。１は洗浄
装置Ｗの主洗浄部（図における「第４水洗」部）であ
り、前記流路Ｆに設置されている。又、２は同補助洗浄
部（図における「第５水洗」部）であり、前記流路Ｆに
おける前記主洗浄部１の上流側に設置されている。更
に、３はミスト洗浄部（図における「ミスト水洗」部）
であり、前記流路Ｆにおける前記補助洗浄部２の上流側
に設置されている。よって、洗浄水は順にミスト洗浄部
3,補助洗浄部2,主洗浄部１を流れる。化成被膜の施され
た車両用ホイール（この発明の「アルミニウム合金製被
塗装物」に相当する）は、順に、前記主洗浄部１、前記
補助洗浄部２、前記ミスト洗浄部３において洗浄され、
次の工程（乾燥、主塗装）に移動される。４は陽イオン
塔（「陽イオン交換部材」を備えている）であり、前記
ポンプＰの下流側に設置されている。この陽イオン塔４
は洗浄水中の陽イオンを除去する。５は陰イオン塔
（「陰イオン交換部材」を備えている）であり、前記陽
イオン塔４の下流側に設置されている。この陰イオン塔
５は洗浄水中の陰イオンを除去する。６は両イオン塔
（この発明の「両イオン交換部材」に相当する）であ
り、前記陰イオン塔５の下流側に設置されている。この
両イオン塔６は洗浄水中の陰イオンおよび陽イオンを同
時に除去する。７は水質監視計であり、両イオン塔６の
下流側に設置されている。この水質監視計７は洗浄水の
汚染度を常時表示している。この水質監視計７によっ
て、現状態での洗浄水におけるSi含有量を測定し、100p
pmを越えた場合には、洗浄水を適量入れ換え、常時100p
pm以下になるように調節する。なお、25ppm以下にする
場合にも同様な調整をすればよい。In the figure, F is a flow path of the cleaning device W, which is configured in a circulating manner. The cleaning water circulates in the flow path F in the direction of the arrow (dotted arrow) by the operation of the pump P. Reference numeral 1 denotes a main cleaning unit (“fourth rinsing” unit in the figure) of the cleaning device W, which is installed in the flow path F. Reference numeral 2 denotes the auxiliary cleaning unit (the “fifth rinsing” unit in the figure), which is installed on the upstream side of the main cleaning unit 1 in the flow path F. Furthermore, 3 is a mist cleaning section (“mist rinsing” section in the figure)
And installed upstream of the auxiliary cleaning unit 2 in the flow path F. Therefore, the cleaning water is supplied to the mist cleaning section
3, flows through the auxiliary cleaning section 2 and the main cleaning section 1. The vehicle wheel provided with the chemical conversion coating (corresponding to the “aluminum alloy coated object” of the present invention) is sequentially cleaned in the main cleaning unit 1, the auxiliary cleaning unit 2, and the mist cleaning unit 3,
Move to the next step (drying, main coating). Reference numeral 4 denotes a cation tower (provided with a “cation exchange member”), which is installed downstream of the pump P. This cation tower 4
Removes cations in the wash water. Reference numeral 5 denotes an anion tower (provided with an “anion exchange member”), which is installed downstream of the cation tower 4. The anion tower 5 removes anions in the washing water. Reference numeral 6 denotes a double ion tower (corresponding to a “both ion exchange member” of the present invention), which is installed downstream of the anion tower 5. Both ion towers 6 simultaneously remove anions and cations in the washing water. Reference numeral 7 denotes a water quality monitor, which is installed downstream of both ion towers 6. The water quality monitor 7 constantly displays the degree of contamination of the washing water. With this water quality monitor 7, the Si content in the wash water in the current state was measured,
If it exceeds pm, replace the appropriate amount of wash water and keep 100p
Adjust to less than pm. It should be noted that the same adjustment may be made when the concentration is 25 ppm or less.
この洗浄装置Ｗの作動を第１図に基づいて説明する。 The operation of the cleaning device W will be described with reference to FIG.
車両用ホイールを鋳造し、順に、湯洗、第一脱脂、第
二脱脂、第一水洗、第二水洗、第三水洗の工程を終了し
た後、前記車両陽ホイールの表面にクロメート処理を施
すことにより化成被膜を形成する。この化成被膜を施し
た車両用ホイールを洗浄装置Ｗにおける主洗浄部１によ
って第四水洗、補助洗浄部２によって第五水洗を、ミス
ト洗浄部３によって最終水洗を行う。なお、洗浄水はミ
スト洗浄部３、補助洗浄部２、主洗浄部１の間を還流し
ているため、第４水洗と第五水洗とミスト水洗は同一の
洗浄水によって行われる。そして、水洗後における洗浄
水の汚染は前記４は陽イオン塔、陰イオン塔５、両イオ
ン塔６によって浄化され、再度、水洗に供される。ミス
ト水洗を終了した車両用ホイールは乾燥後、車両用ホイ
ールの表面にポリエステル系塗料を塗布し、焼付乾燥す
る。After casting the vehicle wheel and sequentially completing the steps of hot water washing, first degreasing, second degreasing, first washing, second washing, and third washing, the surface of the vehicle positive wheel is subjected to chromate treatment. To form a chemical conversion film. The vehicle wheel provided with the chemical conversion coating is subjected to fourth washing by the main washing unit 1, fifth washing by the auxiliary washing unit 2, and final washing by the mist washing unit 3 in the washing device W. Since the washing water is flowing between the mist washing unit 3, the auxiliary washing unit 2, and the main washing unit 1, the fourth washing, the fifth washing, and the mist washing are performed by the same washing water. Then, the contamination of the washing water after the washing is purified by the cation tower, the anion tower 5 and the both ion towers 6, and the washing water is again subjected to washing. After drying the mist-washed vehicle wheel, a polyester paint is applied to the surface of the vehicle wheel and baked and dried.
この主塗装を施した車両用ホイールについて、洗浄水
のSi含有量に対し耐水性および耐蝕性テストを行ったも
のが下記の第１表である。Table 1 below shows the results of water resistance and corrosion resistance tests on the Si content of the wash water for the vehicle wheel coated with the main paint.
（１）．耐水性テスト 被テスト物を常温水に200時間浸し、碁盤目状に傷を
つけ（JIS K5400）、テーピングテストを行うものであ
る。 (1). Water resistance test A test object is immersed in normal-temperature water for 200 hours to make a grid-like scratch (JIS K5400), and a taping test is performed.
（２）．耐湿性テスト 被テスト物を湿度90％、温度45〜50℃の状態に200時
間放置し、その後、碁盤目状に傷をつけ（JIS K540
0）、テーピングテストを行うものである。(2). Moisture resistance test The test object was left for 200 hours at a humidity of 90% and a temperature of 45 to 50 ° C, and then was cut in a grid pattern (JIS K540
0), to perform a taping test.
〔発明の効果〕 この発明のアルミニウム合金製被塗装物の化成被膜用
洗浄装置においては、洗浄部とイオン交換樹脂部材との
間を洗浄水が循環し、前記洗浄部においてアルミニウム
合金製被塗装物に施された化成被膜を洗浄する化成被膜
用洗浄装置において、 前記洗浄水のSi含有量を100ppm以下としたため、 アルミニウム合金製被塗装物の表面に付着したSi成分
を除去しやすいものである。[Effect of the Invention] In the chemical conversion coating cleaning apparatus for an aluminum alloy object to be coated according to the present invention, the cleaning water circulates between the cleaning unit and the ion exchange resin member, and the aluminum alloy object to be coated in the cleaning unit. In the chemical conversion coating cleaning apparatus for cleaning the chemical conversion coating applied to the above, since the Si content of the cleaning water is 100 ppm or less, the Si component adhered to the surface of the aluminum alloy object to be coated can be easily removed.
よって、この発明に係る洗浄装置によって化成被膜を
洗浄した後、主塗装を施せば、第１表に示すごとき、耐
水性および耐湿性に優れたアルミニウム合金製品を得る
ことができる。Therefore, if the chemical conversion coating is washed by the washing apparatus according to the present invention and then the main coating is applied, an aluminum alloy product excellent in water resistance and moisture resistance as shown in Table 1 can be obtained.
なお、前記洗浄水のSi含有量を25ppm以下とすれば、
アルミニウム合金製被塗装物の表面に付着したSi成分を
より一層除去できるため、第１表に示すごとき、耐水性
および耐湿性により一層優れたアルミニウム合金製物品
を得ることができる。If the Si content of the washing water is 25 ppm or less,
Since the Si component adhering to the surface of the aluminum alloy workpiece can be further removed, an aluminum alloy article having more excellent water resistance and moisture resistance as shown in Table 1 can be obtained.
第１図はこの発明に係る、アルミニウム合金製被塗装物
の化成被膜用洗浄装置の実施例の工程図である。 Ｗ……化成被膜用洗浄装置 １……主洗浄部（洗浄部） ２……補助洗浄部（洗浄部） ３……ミスト洗浄部（洗浄部）FIG. 1 is a process diagram of an embodiment of a cleaning apparatus for a chemical conversion coating of an aluminum alloy article to be coated according to the present invention. W: Chemical conversion film cleaning device 1: Main cleaning unit (cleaning unit) 2: Auxiliary cleaning unit (cleaning unit) 3: Mist cleaning unit (cleaning unit)
Claims (2)
水が循環し、前記洗浄部においてアルミニウム合金製被
塗装物に施された化成被膜を洗浄する化成被膜用洗浄装
置において、 前記洗浄水のSi含有量を100ppm以下としたことを特徴と
するアルミニウム合金製被塗装物の化成被膜用洗浄装
置。1. A chemical conversion coating cleaning apparatus for circulating cleaning water between a cleaning unit and an ion exchange resin member to clean a conversion coating applied to an aluminum alloy workpiece in the cleaning unit. An apparatus for chemical conversion coating of aluminum alloy to be coated, wherein the Si content of water is 100 ppm or less.
ことを特徴とする特許請求の範囲第１項記載のアルミニ
ウム合金製被塗装物の化成被膜用洗浄装置。2. The apparatus according to claim 1, wherein the Si content of the cleaning water is 25 ppm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19637589A JP2742934B2 (en) | 1989-07-27 | 1989-07-27 | Cleaning equipment for chemical conversion coatings on aluminum alloy workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19637589A JP2742934B2 (en) | 1989-07-27 | 1989-07-27 | Cleaning equipment for chemical conversion coatings on aluminum alloy workpieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0360759A JPH0360759A (en) | 1991-03-15 |
| JP2742934B2 true JP2742934B2 (en) | 1998-04-22 |
Family
ID=16356820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19637589A Expired - Fee Related JP2742934B2 (en) | 1989-07-27 | 1989-07-27 | Cleaning equipment for chemical conversion coatings on aluminum alloy workpieces |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2742934B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7219987B1 (en) * | 2021-11-08 | 2023-02-09 | 株式会社レイズエンジニアリング | Aluminum wheel surface treatment method |
-
1989
- 1989-07-27 JP JP19637589A patent/JP2742934B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0360759A (en) | 1991-03-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |