JPH10176282A - Surface treatment method for honeycomb sandwich panel - Google Patents
Surface treatment method for honeycomb sandwich panelInfo
- Publication number
- JPH10176282A JPH10176282A JP35243696A JP35243696A JPH10176282A JP H10176282 A JPH10176282 A JP H10176282A JP 35243696 A JP35243696 A JP 35243696A JP 35243696 A JP35243696 A JP 35243696A JP H10176282 A JPH10176282 A JP H10176282A
- Authority
- JP
- Japan
- Prior art keywords
- sandwich panel
- honeycomb sandwich
- chromic acid
- spraying
- honeycomb
- 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
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004381 surface treatment Methods 0.000 title claims description 7
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims abstract description 18
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 9
- 230000002378 acidificating effect Effects 0.000 claims abstract description 7
- 238000010306 acid treatment Methods 0.000 claims abstract description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 5
- 238000005238 degreasing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000003929 acidic solution Substances 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 238000007654 immersion Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000001994 activation Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 235000013024 sodium fluoride Nutrition 0.000 description 2
- 239000011775 sodium fluoride Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 231100001010 corrosive Toxicity 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Chemical Treatment Of Metals (AREA)
Abstract
(57)【要約】
【課題】 ハニカムパネル１のフェイスシート２とハニ
カムコア３間の密着性には製法上むらが生じることが避
けられず、接合強度的に封鎖性の弱い断面（端部）接着
部から酸性液が浸入するため密着不良を生じたり、また
は浸入した強酸性液またはクロム酸液を十分に抜き出す
ことはできないため、ハニカムパネル１内部でハニカム
コア３やフェイスシート２裏面を腐食する。
【解決手段】 基本的に各種溶液への浸漬処理はやめ、
吹き付けにて塗布・洗浄等を行う。下地の活性化処理と
してホーニング処理を行い（ステップ１０１）、クロム
酸処理液も吹き付け塗布する（ステップ１０３）。
(57) [Summary] [Problem] A cross section (edge portion) in which the adhesion between the face sheet 2 of the honeycomb panel 1 and the honeycomb core 3 is unavoidable due to the manufacturing method, and the sealing strength is weak in terms of bonding strength. Since the acidic liquid penetrates from the bonding portion, poor adhesion occurs, or the penetrated strong acidic liquid or chromic acid liquid cannot be sufficiently extracted, so that the honeycomb core 3 and the back surface of the face sheet 2 are corroded inside the honeycomb panel 1. . SOLUTION Basically, immersion treatment in various solutions is stopped.
Application / washing is performed by spraying. A honing process is performed as a base activation process (step 101), and a chromic acid treatment liquid is also applied by spraying (step 103).
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルミニウム合金
からなるハニカムサンドイッチパネル（以下ハニカムパ
ネル）の表面処理方法であって、ハニカムパネルのフェ
イスシート表面に耐食性並びに良好な塗膜密着性を得る
ためのクロメート皮膜を形成する表面処理方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a surface of a honeycomb sandwich panel (hereinafter referred to as a "honeycomb panel") made of an aluminum alloy, which is used for obtaining corrosion resistance and good coating adhesion on the face sheet surface of the honeycomb panel. The present invention relates to a surface treatment method for forming a chromate film.
【０００２】[0002]
【従来の技術】従来、アルミニウム合金の表面に耐食性
を付与する又は塗膜密着性を良好にする方法として、ク
ロメート処理による表面処理方法が一般的である（特公
昭６２−３２２８０号公報参照）。図２の工程フロー図
に従来の処理方法を示す。通常、所定のアルカリ脱脂処
理（ステップ２００）を行いスプレー又は浸漬による水
洗を行い（ステップ２０１）、強酸性の液（例えば、硝
酸）で活性化処理を行い（ステップ２０２）、アルカリ
中和（２０３）する。次にステップ２０１同様に水洗し
（ステップ２０５）、クロメート処理液に所定時間浸漬
してクロメート皮膜を形成した後（ステップ２０６）、
十分な水洗（ステップ２０８）を行って、温風乾燥する
（ステップ２０９）。2. Description of the Related Art Conventionally, as a method of imparting corrosion resistance to the surface of an aluminum alloy or improving the adhesion of a coating film, a surface treatment method by chromate treatment is generally used (see Japanese Patent Publication No. 62-28080). A conventional processing method is shown in the process flow chart of FIG. Usually, a predetermined alkali degreasing treatment (Step 200) is performed, and water washing is performed by spraying or dipping (Step 201), an activation treatment is performed with a strongly acidic liquid (for example, nitric acid) (Step 202), and alkali neutralization (203) is performed. ). Next, it is washed with water in the same manner as in step 201 (step 205), and is immersed in a chromate treatment solution for a predetermined time to form a chromate film (step 206).
After sufficient washing with water (step 208), drying with warm air is performed (step 209).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、アルミ
ニウム合金製のハニカムパネルは図３、４のように断面
（端部）構造は、上下にフェイスシート２とハニカムコ
ア３がシート状のフィルム接着剤４により接合された積
層構造となっており、フェイスシート２とハニカムコア
３は露出していることから、前記の所定のデッピング
（浸漬）によるクロメート処理工程（ステップ２０６）
を行うと、その断面（端部）もフェイスシート２同様に
前処理である活性化処理の強酸性液に暴露される。However, the honeycomb panel made of an aluminum alloy has a cross-sectional (end) structure as shown in FIGS. 3 and 4 in which the face sheet 2 and the honeycomb core 3 are vertically arranged in a sheet-like film adhesive 4. Since the face sheet 2 and the honeycomb core 3 are exposed, the chromate treatment step by the above-mentioned predetermined dipping (immersion) (step 206)
Is performed, the cross section (end) is also exposed to the strong acid solution of the activation treatment, which is the pretreatment, similarly to the face sheet 2.
【０００４】フェイスシート２とハニカムコア３間の密
着性には製法上むらが生じることが避けられず、接合強
度的に封鎖性の弱い断面（端部）接着部から酸性液が浸
入するため密着不良を生じたり、または浸入した強酸性
液またはクロム酸液を十分に抜き出すことはできないた
め、ハニカムパネル１内部でハニカムコア３やフェイス
シート２の裏面を腐食する欠点がある。It is inevitable that the adhesiveness between the face sheet 2 and the honeycomb core 3 will be uneven due to the manufacturing method, and the acidic liquid will penetrate from the cross-section (end) adhesive portion where the sealing strength is weak. Since the failure or the infiltration of the strong acid solution or the chromic acid solution cannot be sufficiently extracted, there is a defect that the honeycomb core 3 and the back surface of the face sheet 2 are corroded inside the honeycomb panel 1.
【０００５】あるいは、次工程として塗装工程がある場
合、塗膜乾燥のために高温乾燥した時に、ハニカムコア
３のセル内部に浸入した残留水分や薬液が熱により膨張
して、そのセル上面のフェイスシート２に膨れを生じさ
せる問題があった。[0005] Alternatively, if there is a coating step as the next step, when the coating is dried at a high temperature to dry the coating film, the residual moisture or chemical solution that has entered the inside of the cells of the honeycomb core 3 expands due to heat, and the face on the upper surface of the cells is formed. There is a problem that the sheet 2 swells.
【０００６】これらの問題を少しでも低減するために、
従来一般的に以下の３つの方法が採られた。 クロム酸処理液の浸漬時間を極力少なくする。 フェイスシート表面の除錆及びスマット（Ｓｍａｔ）
除去として行う活性化処理の強酸性液の浸漬時間を極力
少なくするか、又は耐水研磨紙によるサンディングによ
り除錆及びスマット除去とし（ステップ２０４）、クロ
ム酸液に短時間浸漬する。 クロム酸を刷毛にて塗布しクロメート皮膜を形成する
（ステップ２０７）。In order to reduce these problems as much as possible,
Conventionally, the following three methods have been generally adopted. Minimize the immersion time of the chromic acid treatment solution. Rust removal and smut on face sheet surface (Smat)
The immersion time of the strongly acidic solution in the activation treatment to be removed is reduced as much as possible, or rust is removed and smut is removed by sanding with a water-resistant abrasive paper (step 204), and the immersion is performed for a short time in a chromic acid solution. Chromic acid is applied with a brush to form a chromate film (step 207).
【０００７】しかし、これらの３つの方法では仕上がり
状態が均一な黄金色にはならず、濃淡の粗いムラの生じ
た色調となり、さらにはサンディングした研磨目が外観
に現れるため、外観仕上がりを重要としない又は審美性
を要求しない内側（内部）の防蝕やあるいは塗装下地と
しての塗膜密着性を得ることを目的とする用途限定のも
とで使用していた。However, in these three methods, the finished state does not become a uniform golden color, but becomes a color tone with a rough unevenness in density, and furthermore, sanded polished eyes appear on the appearance. It has been used under the purpose of limiting the purpose of obtaining anticorrosion on the inside (inside) that does not require or aesthetics or adhesion of the coating film as a coating base.
【０００８】本発明は、上記課題を解決するためになさ
れたもので、アルミニウム合金からなるハニカムパネル
の表面に審美性の優れた外観を呈し、耐食性並びに良好
な塗膜密着性を付与するためのクロメート皮膜形成の処
理方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is intended to provide a honeycomb panel made of an aluminum alloy with an excellent aesthetic appearance on the surface, and to provide corrosion resistance and good coating film adhesion. An object of the present invention is to provide a method for forming a chromate film.
【０００９】[0009]
【課題を解決するための手段】上記目的は、アルミニウ
ム合金からなるハニカムサンドイッチパネルのフェイス
シート表面にクロメート皮膜を形成する方法において、
少なくとも以下の各工程を含むことを特徴とするハニカ
ムサンドイッチパネルの表面処理方法によって達成され
る。 （ａ）ハニカムサンドイッチパネルを有機溶剤による蒸
気脱脂をする工程 （ｂ）研磨材を用いたホーニング処理によりアルミニウ
ム表面の活性化を行った後、吹き付け水洗する工程 （ｃ）クロム酸処理液を吹き付け塗布し、前記ハニカム
サンドイッチパネルにクロメート皮膜を形成させた後、
吹き付け水洗する工程 （ｄ）前記ハニカムサンドイッチパネルを真空加熱処理
にて乾燥させる工程。The object of the present invention is to provide a method for forming a chromate film on a face sheet of a honeycomb sandwich panel made of an aluminum alloy.
This is achieved by a surface treatment method for a honeycomb sandwich panel, which comprises at least the following steps. (A) A step of performing steam degreasing of a honeycomb sandwich panel with an organic solvent (b) A step of activating the aluminum surface by a honing treatment using an abrasive, followed by a step of spraying and rinsing (c) A spraying with a chromic acid treatment liquid Then, after forming a chromate film on the honeycomb sandwich panel,
(D) a step of drying the honeycomb sandwich panel by vacuum heating.
【００１０】[0010]
【作用】本発明によれば、ハニカムサンドイッチパネル
のセル内部に液体が残留することがないので、乾燥のた
めにパネルを加熱しても、フェイスシートが膨れる恐れ
がなく、審美性も保つ。According to the present invention, since no liquid remains in the cells of the honeycomb sandwich panel, even if the panel is heated for drying, the face sheet does not swell and the aesthetics are maintained.
【００１１】[0011]
【発明の実施の形態】図１は本発明の一実施形態を示す
フローチャートであり、図２同様各工程の順を追って記
載してある。まず、アルミニウム合金からなるハニカム
パネル１を所定の有機溶剤脱脂によりフェイスシート２
表面に付着している油脂類を除去する（ステップ１０
０）。有機溶剤（溶剤としては四塩化炭素が好ましい）
を加温し、立ち上がる有機溶剤の蒸気にハニカムパネル
１を晒す。ハニカムパネル１は図３、４に示す構成で、
本実施形態では幅３００ｍｍ×高さ３００ｍｍ×厚み３
０ｍｍの寸法で図示しない治具により縦に吊り下げた状
態で作業を行う。FIG. 1 is a flow chart showing an embodiment of the present invention, in which each step is described in the same order as in FIG. First, the honeycomb panel 1 made of an aluminum alloy is subjected to face sheet 2 by degreasing with a predetermined organic solvent.
Remove fats and oils adhering to the surface (Step 10
0). Organic solvent (carbon tetrachloride is preferred as the solvent)
Is heated, and the honeycomb panel 1 is exposed to the vapor of the rising organic solvent. The honeycomb panel 1 has a configuration shown in FIGS.
In this embodiment, width 300 mm × height 300 mm × thickness 3
The work is performed in a state of being suspended vertically by a jig (not shown) with a dimension of 0 mm.
【００１２】有機溶剤が乾燥した後、直ちに液体ホーニ
ング処理（ステップ１０１）を行う。液体ホーニング処
理工程で使用する吹き付け用の研磨材としてガラスビー
ズ砥粒（岳南光機（株）製＃２４０：６２〜７４μ）を
用い、該ガラスビーズと水との混合比（容積比）は２：
１とする。吹き付け圧力は４〜７ｋｇ／ｃｍ2 、吹き付
け角９０°、吹き付け距離１０〜１５ｃｍで吹き付け
る。本実施の形態では、吹き付けに用いたスプレーガン
を、吹き付けの際にはフェイスシート２の左右、上下に
約３０ｃｍ／ｓｅｃの速度で動かし、フェイスシート２
にガラスビーズと水の混合剤を吹き付けた。液体ホーニ
ング処理工程により、フェイスシート２表面に形成され
ているアルミ酸化膜、スマット、腐食物が除去され表面
活性化し微粗化されるためステップ１０３のクロメート
処理時の表面酸化反応を促進して仕上がりの良好な皮膜
を形成するのに最適な表面状態となる。Immediately after the organic solvent is dried, a liquid honing process (step 101) is performed. A glass bead abrasive (# 240: 62-74 μ, manufactured by Takenan Koki Co., Ltd.) is used as a spraying abrasive used in the liquid honing process, and the mixing ratio (volume ratio) of the glass beads to water is 2 :
Let it be 1. The spray pressure is 4 to 7 kg / cm 2 , the spray angle is 90 °, and the spray distance is 10 to 15 cm. In the present embodiment, the spray gun used for spraying is moved at a speed of about 30 cm / sec up and down and up and down the face sheet 2 at the time of spraying.
Was sprayed with a mixture of glass beads and water. The liquid honing process removes the aluminum oxide film, smut, and corrosives formed on the surface of the face sheet 2 and activates and finely roughens the surface. The surface condition is optimal for forming a good film having a good surface roughness.
【００１３】ステップ１０２のスプレー水洗で表面に残
留するガラスビーズを残らず洗浄した。本実施の形態で
は約６０秒行っている。水洗後直ちに、クロメート液を
スプレー塗布する（ステップ１０３）。クロメート液
は、クロム酸塩、燐酸塩及び弗化物を含む酸性の溶液と
し、最も最適なスプレー溶液の組成は燐酸２０〜１００
ｇ／ｌ、弗化ナトリウム２．０〜６．０ｇ／ｌ、クロム
酸６．０〜２０．０ｇ／ｌであり、特に弗化物とクロム
酸の酸性比（Ｆ／ＣｒＯ3 ）は０．２５〜０．３０であ
ることが必要である。本実施の形態で用いたクロム酸溶
液は燐酸８０ｇ／ｌ、弗化ナトリウム４．０ｇ／ｌ、ク
ロム酸１５．０ｇ／ｌ、で弗化物とクロム酸の酸性比
０．２７、ＰＨ１．７の組成としたものである。In the step 102, the glass beads were washed without leaving any glass beads remaining on the surface. In this embodiment, the operation is performed for about 60 seconds. Immediately after washing with water, a chromate solution is spray applied (step 103). The chromate solution is an acidic solution containing chromate, phosphate and fluoride, and the most optimal spray solution composition is phosphoric acid 20 to 100.
g / l, sodium fluoride 2.0-6.0 g / l, chromic acid 6.0-20.0 g / l, and especially the acid ratio of fluoride to chromic acid (F / CrO 3 ) is 0.25 It must be ０．３0.30. The chromic acid solution used in the present embodiment was 80 g / l of phosphoric acid, 4.0 g / l of sodium fluoride, and 15.0 g / l of chromic acid, and had an acid ratio of fluoride to chromic acid of 0.27 and PH of 1.7. It is a composition.
【００１４】尚、燐酸は酸性比に関わらず２０〜１００
ｇ／ｌの範囲であるならば問題なく、混合したクロム酸
浴のＰＨは１．７〜１．９であることが必要である。The phosphoric acid is 20 to 100 regardless of the acid ratio.
If it is in the range of g / l, there is no problem, and the pH of the mixed chromic acid bath needs to be 1.7 to 1.9.
【００１５】該クロメート液を吹き付け圧力４〜５ｋｇ
／ｃｍ2 、吹き付け角９０°、吹き付け距離１０〜１５
ｃｍでスプレー処理する。その後所定のスプレー水洗
（ステップ１０４）にてハニカムパネル１を水洗し、最
後に真空加熱処理（ステップ１０５）を施し、パネル１
端部からの水分を除去する。該真空加熱処理の処理条件
は温度６０〜８０℃、真空度０．１〜１Ｔｏｒｒとし、
本実施の形態では１０分間乾燥した。これにより、パネ
ル１端部等に付着した水分等の除去を完全に行うことが
でき、かつクロメート皮膜を完全固化することができ
る。The chromate solution is sprayed at a pressure of 4 to 5 kg.
/ Cm 2 , spray angle 90 °, spray distance 10-15
Spray in cm. Thereafter, the honeycomb panel 1 is rinsed with a predetermined spray water (Step 104), and finally subjected to a vacuum heating process (Step 105).
Remove moisture from edges. The processing conditions of the vacuum heat treatment are a temperature of 60 to 80 ° C. and a degree of vacuum of 0.1 to 1 Torr,
In the present embodiment, drying was performed for 10 minutes. This makes it possible to completely remove moisture and the like adhering to the panel 1 end and the like, and to completely solidify the chromate film.
【００１６】[0016]
【発明の効果】以上詳しく説明したように、本発明によ
れば、 処理工程の中で、ハニカムパネルを水洗を含め、各種
溶液に浸漬するのを止めた。 クロメート処理前の塗装面の活性化手段としての硝酸
浸漬やサンディング処理を止め、液体ホーニング処理と
した。 クロメート液の塗布を浸漬や刷毛による塗布を止め、
吹き付け塗布とした。ので、ハニカムパネルの端辺から
強酸性液の暴露による接着剤剥がれがなく、加えてクロ
メート皮膜は仕上がり状態の良い、均一な黄金色をした
皮膜を形成することができる。As described in detail above, according to the present invention, the dipping of the honeycomb panel into various solutions including washing with water is stopped during the treatment process. Nitric acid immersion and sanding treatment as means for activating the painted surface before the chromate treatment were stopped, and a liquid honing treatment was performed. Stop applying the chromate solution by dipping or brushing,
Spray coating was used. Therefore, the adhesive does not peel off from the edge of the honeycomb panel due to the exposure to the strongly acidic liquid, and the chromate film can form a uniform golden-colored film having a good finish.
【図１】図１は本発明になる表面処理方法の一実施形態
を示すフローチャートである。FIG. 1 is a flowchart showing one embodiment of a surface treatment method according to the present invention.
【図２】図２は従来の表面処理方法を示すフローチャー
トである。FIG. 2 is a flowchart showing a conventional surface treatment method.
【図３】図３はハニカムパネルの一部を切り欠いた斜視
図であるFIG. 3 is a perspective view in which a part of a honeycomb panel is cut away.
【図４】図４はハニカムパネル辺端部の拡大図である。FIG. 4 is an enlarged view of a side edge portion of a honeycomb panel.
１ ハニカムパネル ２ フェイスシート ３ ハニカムコア ４ フィルム接着剤 １００ 有機溶剤蒸気脱脂処理 １０１ 液体ホーニング処理 １０２ スプレー水洗 １０３ クロメート液スプレー処理 １０４ スプレー水洗 １０５ 真空加熱処理 DESCRIPTION OF SYMBOLS 1 Honeycomb panel 2 Face sheet 3 Honeycomb 4 Film adhesive 100 Organic solvent vapor degreasing treatment 101 Liquid honing treatment 102 Spray water washing 103 Chromate liquid spraying treatment 104 Spray water washing 105 Vacuum heating treatment
Claims (4)
ドイッチパネルのフェイスシート表面にクロメート皮膜
を形成する方法において、少なくとも以下の各工程を含
むことを特徴とするハニカムサンドイッチパネルの表面
処理方法。 （ａ）ハニカムサンドイッチパネルを有機溶剤による蒸
気脱脂をする工程。 （ｂ）研磨材を用いたホーニング処理によりアルミニウ
ム表面の活性化を行った後、吹き付け水洗する工程。 （ｃ）クロム酸処理液を吹き付け塗布し、前記ハニカム
サンドイッチパネルにクロメート皮膜を形成させた後、
吹き付け水洗する工程。 （ｄ）前記ハニカムサンドイッチパネルを真空加熱処理
にて乾燥させる工程。1. A method for forming a chromate film on a face sheet of a honeycomb sandwich panel made of an aluminum alloy, comprising at least the following steps: (A) A step of performing steam degreasing of a honeycomb sandwich panel with an organic solvent. (B) A step of activating the aluminum surface by a honing treatment using an abrasive, followed by spraying and washing with water. (C) After spraying and applying a chromic acid treatment liquid to form a chromate film on the honeycomb sandwich panel,
The process of spraying and washing. (D) a step of drying the honeycomb sandwich panel by a vacuum heating process.
いる研磨材にはガラスビーズを用い、該ガラスビーズと
水とを２：１の割合で混合し、吹き付け圧力は４〜７ｋ
ｇ／ｃｍ2 、吹き付け角９０°、吹き付け距離１０〜１
５ｃｍでフェイスシート表面を吹き付け処理することを
特徴とするハニカムサンドイッチパネルの表面処理方
法。2. The method according to claim 1, wherein glass beads are used as an abrasive used in the honing treatment, and the glass beads and water are mixed in a ratio of 2: 1 and a spray pressure is 4 to 7 k.
g / cm 2 , spray angle 90 °, spray distance 10-1
A surface treatment method for a honeycomb sandwich panel, comprising spraying a face sheet surface at 5 cm.
成はクロム酸塩、燐酸塩、及び弗化物からなる酸性の溶
液であることを特徴とするハニカムサンドイッチパネル
の表面処理方法。3. The method for treating a surface of a honeycomb sandwich panel according to claim 1, wherein the composition of the chromic acid treatment liquid is an acidic solution comprising chromate, phosphate, and fluoride.
ム酸（ＣｒＯ3 ）６．０〜２０．０ｇ／ｌ、燐酸（Ｈ3
ＰＯ4）２０〜１００ｇ／ｌ、および弗化ナトリウム
（ＮａＦ）２．０〜６．０ｇ／ｌからなる酸性の溶液で
あって、弗化物とクロム酸の酸性比（Ｆ／ＣｒＯ3 ）を
０．２５〜０．３０の範囲としたクロム酸溶液を用いる
ことを特徴とするハニカムサンドイッチパネルの表面処
理方法。4. The chromic acid treatment liquid according to claim 1 or 3, wherein the chromic acid (CrO 3 ) is 6.0 to 20.0 g / l and the phosphoric acid (H 3
PO 4) 20~100g / l, and a solution of acidic consisting of sodium fluoride (NaF) 2.0~6.0g / l, the acidic ratio of the fluoride and chromium acid (F / CrO 3) 0 A method for treating the surface of a honeycomb sandwich panel, comprising using a chromic acid solution in the range of 0.25 to 0.30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35243696A JPH10176282A (en) | 1996-12-13 | 1996-12-13 | Surface treatment method for honeycomb sandwich panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35243696A JPH10176282A (en) | 1996-12-13 | 1996-12-13 | Surface treatment method for honeycomb sandwich panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10176282A true JPH10176282A (en) | 1998-06-30 |
Family
ID=18424070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35243696A Pending JPH10176282A (en) | 1996-12-13 | 1996-12-13 | Surface treatment method for honeycomb sandwich panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10176282A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008238696A (en) * | 2007-03-28 | 2008-10-09 | Morishin Kogyo Kk | Honeycomb plate and forming method of the same |
| JP2015042416A (en) * | 2013-07-25 | 2015-03-05 | アイシン精機株式会社 | Internal chill casting method |
| CN112657797A (en) * | 2020-12-11 | 2021-04-16 | 哈尔滨飞机工业集团有限责任公司 | Method for removing release agent from honeycomb sandwich composite material member |
-
1996
- 1996-12-13 JP JP35243696A patent/JPH10176282A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008238696A (en) * | 2007-03-28 | 2008-10-09 | Morishin Kogyo Kk | Honeycomb plate and forming method of the same |
| JP2015042416A (en) * | 2013-07-25 | 2015-03-05 | アイシン精機株式会社 | Internal chill casting method |
| CN112657797A (en) * | 2020-12-11 | 2021-04-16 | 哈尔滨飞机工业集团有限责任公司 | Method for removing release agent from honeycomb sandwich composite material member |
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