JPS61293581A - Fluidized dip coating method - Google Patents
Fluidized dip coating methodInfo
- Publication number
- JPS61293581A JPS61293581A JP13607185A JP13607185A JPS61293581A JP S61293581 A JPS61293581 A JP S61293581A JP 13607185 A JP13607185 A JP 13607185A JP 13607185 A JP13607185 A JP 13607185A JP S61293581 A JPS61293581 A JP S61293581A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- dip coating
- fluidized dip
- epoxy resin
- fluidized
- 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
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の技術分野〕 この発明は金属部品の流動浸漬塗装方法に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to a method for fluidized dip coating of metal parts.
（発明の技術的背景とその問題点〕
従来、流動浸漬塗装は防食や電気絶縁を目的として、エ
ポキシ樹脂・ポリエステル樹脂・ポリアミド樹脂などの
微粉末中に空気を吹き込み浮遊状態にした中に、あらか
じめ１８０〜２００’Ｃに熱した部品を浸漬して樹脂を
付着させる。そして、塗装皮膜の密着性を上げるために
前処理として銀めっきやニッケルめっきが施され、特に
銅・銅合金には不可欠である。(Technical background of the invention and its problems) Conventionally, fluidized dip coating has been used for the purpose of corrosion prevention and electrical insulation by blowing air into fine powder of epoxy resin, polyester resin, polyamide resin, etc. to make it suspended. The parts heated to 180-200'C are immersed to adhere the resin. Then, silver plating or nickel plating is applied as a pre-treatment to improve the adhesion of the paint film, which is especially essential for copper and copper alloys. be.
ところで、めっき後に流動浸漬塗装を行うと、１８０〜
２００℃の予熱時にめっきにふくれを生ずることがあり
、すると塗装皮膜の密着強度や耐クラツク性が落ちる。By the way, if fluid dip coating is performed after plating, the coating will be 180~
Blistering may occur in the plating during preheating to 200°C, which reduces the adhesion strength and crack resistance of the paint film.
また、塗装皮膜に特に大きな熱応力を与える形状の場合
は、めっきの密着性はよくても、塗装皮膜にクラックが
発生する。In addition, if the shape applies a particularly large thermal stress to the paint film, cracks will occur in the paint film even if the adhesion of the plating is good.
さらに、めっき処理をやらないで流動浸漬塗装をすると
、金属材料が防錆後や１８０〜２００℃予熱時に酸化さ
れ、生成した金属酸化物は素地金属と密着性が悪いため
、密着強度や耐クラツク性の優れた塗装皮膜が得られな
い。Furthermore, if fluidized dip coating is applied without plating, the metal material will be oxidized after rust prevention or during preheating to 180-200℃, and the metal oxide produced will have poor adhesion to the base metal, resulting in poor adhesion strength and crack resistance. A coating film with excellent properties cannot be obtained.
なお、一般に採用されている流動浸漬塗装の処理工程は
、
脱脂→防錆→水洗→電気めつき→水洗→湯洗→乾燥→予
熱→流動浸漬塗装→硬化、
である。The generally adopted process for fluidized dip coating is: degreasing → rust prevention → washing with water → electroplating → washing with water → washing with hot water → drying → preheating → fluidized dip coating → curing.
本質層の目的は、密着性や耐クラツク性に優れた流動浸
漬塗装方法を得ることである。The purpose of the essential layer is to obtain a fluidized dip coating method with excellent adhesion and crack resistance.
（発明の概要）
前処理として電着塗装と粉体静電塗装を施し、加熱乾燥
後直ちに流動浸漬塗装を施すことにより、粉体静電塗装
加熱乾燥時（１８０〜２００℃）の予熱を利用するもの
で、得られた流動浸漬塗装は密着性と耐クラツク性が優
れ、熱応力が大きい形状の部材でも優れた耐クラツク性
がある。(Summary of the invention) Electrodeposition coating and powder electrostatic coating are applied as pretreatment, and fluidized dip coating is applied immediately after heating and drying, thereby utilizing the preheating (180 to 200°C) during heating and drying of powder electrostatic coating. The obtained fluidized dip coating has excellent adhesion and crack resistance, and even members having a shape that is subject to large thermal stress have excellent crack resistance.
（発明の実施例）
第１図に示すように電着塗装にカチオン形エポキシ樹脂
系塗装を、粉体静電塗装にエポキシ樹脂またはポリウレ
タン樹脂粉体を用いて塗装し、１８０〜２００℃で加熱
乾燥する。その俊この予熱を活用して直ちにエポキシ樹
脂やポリウレタン樹脂などの微粉末で粉体塗装をする。(Embodiment of the invention) As shown in Fig. 1, a cationic epoxy resin coating is used for electrodeposition coating, and an epoxy resin or polyurethane resin powder is used for powder electrostatic coating, and the coating is heated at 180 to 200°C. dry. Utilizing the preheating of Toshiko, we immediately applied powder coating with fine powder such as epoxy resin or polyurethane resin.
本発明の処理工程は、
脱脂→水洗→電着塗装→水洗→加熱乾燥→粉体静電塗装
→加熱乾燥→流動浸漬塗装→硬化、である。The processing steps of the present invention are: degreasing → water washing → electrodeposition coating → water washing → heat drying → powder electrostatic coating → heat drying → fluidized dip coating → curing.
電着塗装は電気化学的に素材へ樹脂として析出させるも
ので、電流に比例して塗装されるため、複雑な形状の合
せ目や奥まった部分へも極めて良好なつき回り性・密着
性・柔軟性があり、流動浸漬塗装との層間密着性もよく
、さらに応力緩和層としての働きもする。電着塗装の皮
膜厚さは２０〜３０Ｘｌ＃ｌでめり、電着塗装に引続い
て一般に５０〜８０−の皮膜厚さに粉体静電装置を施す
ことにより応力緩和層としての性能を強化することがで
きる。Electrodeposition coating is electrochemically deposited as a resin on the material, and because the coating is applied in proportion to the electric current, it has extremely good coverage, adhesion, and flexibility, even on the joints of complex shapes and deep areas. It has good interlayer adhesion with fluidized dip coating, and also functions as a stress relaxation layer. The film thickness of the electrodeposition coating is 20 to 30Xl #l, and the performance as a stress relaxation layer is improved by applying a powder electrostatic device to the film thickness of 50 to 80cm following the electrodeposition coating. Can be strengthened.
（実施例の効果）
Ｎ着塗装にカヂオン形エポキシ樹脂系塗料を用いて脱脂
処理した鋼材に塗装し、１７０〜１９０’Ｃで加熱乾燥
し続いて粉体静電塗装にエポキシ樹脂粉体塗料で塗装し
、１８０〜２００℃で加熱乾燥した後直ちにその予熱で
エポキシ樹脂流動浸漬塗装を施した。(Effects of Example) A cation-type epoxy resin paint was used for N coating on a degreased steel material, heated and dried at 170 to 190'C, and then an epoxy resin powder paint was applied for powder electrostatic coating. Immediately after coating and drying by heating at 180 to 200°C, epoxy resin fluidized dip coating was applied by preheating.
この結果と前処理にニッケルめっきを施した従来法との
比較を表に示す。The table shows a comparison between this result and the conventional method in which nickel plating was applied as a pretreatment.
（以下余白）
〔発明の効果゛〕
以上説明したように、本発明によれば、流動浸漬塗装皮
膜の金属材料への密着強度と耐クラツク性が上がる。こ
れは前処理として施した電着塗装皮膜のエリクセン値は
６〜１２ｓ、粉体静電塗装皮膜のエリクセン値は６〜８
ｙＶｎといずれも柔軟性があり、前処理塗装皮膜厚さは
７０〜１１０譚（電着塗装２０〜３０−１粉体静電塗装
５０〜８０ＪＪＩｎ）であり、素地金属と流動浸漬塗装
との間にあって応力緩和層としての働きをするためでお
る。(The following is a blank space) [Effects of the Invention] As explained above, according to the present invention, the adhesion strength and crack resistance of a fluidized dip coating film to a metal material are improved. The Erichsen value of the electrocoated film applied as a pretreatment is 6 to 12 s, and the Erichsen value of the powder electrostatic coating film is 6 to 8.
Both yVn and yVn are flexible, and the pretreatment coating film thickness is 70 to 110 mm (electrodeposition coating: 20 to 30-1, powder electrostatic coating: 50 to 80 mm), and there is no gap between the base metal and fluidized dip coating. This is because it acts as a stress relaxation layer.
本発明の前処理を適用すれば、電気めっきを施ざなくと
も良好な密着強度と耐クラツク性のある塗装皮膜が得ら
れる。By applying the pretreatment of the present invention, a coating film with good adhesion strength and crack resistance can be obtained without electroplating.
第１図は本発明の一実施例による流動浸漬塗装方法を適
用した銅導体の断面図、第２図は従来法の流動浸漬塗装
を施した銅導体の断面図である。
１：銅導体
２：電着塗装
３：粉体静電塗装
４：流動浸漬塗装
５：電気めっき
代理人 弁理士 則 近 憲 佑
（ばか１名）FIG. 1 is a sectional view of a copper conductor to which a fluidized dip coating method according to an embodiment of the present invention has been applied, and FIG. 2 is a sectional view of a copper conductor to which a conventional fluidized dip coating method has been applied. 1: Copper conductor 2: Electrodeposition coating 3: Powder electrostatic coating 4: Fluid dipping coating 5: Electroplating agent Patent attorney Noriyuki Chika (1 idiot)
Claims (1)
、電着塗装を行う第１の工程とこの第１の工程の次に粉
体静電塗装後加熱乾燥を行う第２の工程を施す流動浸漬
塗装方法。In a fluidized dip coating method for metal parts, fluidized dip involves a first step of electrocoating as a pretreatment, and a second step of heating and drying after electrostatic powder coating after this first step. Painting method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13607185A JPS61293581A (en) | 1985-06-24 | 1985-06-24 | Fluidized dip coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13607185A JPS61293581A (en) | 1985-06-24 | 1985-06-24 | Fluidized dip coating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61293581A true JPS61293581A (en) | 1986-12-24 |
Family
ID=15166541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13607185A Pending JPS61293581A (en) | 1985-06-24 | 1985-06-24 | Fluidized dip coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61293581A (en) |
-
1985
- 1985-06-24 JP JP13607185A patent/JPS61293581A/en active Pending
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