JP2000087254A5

JP2000087254A5 -

Info

Publication number: JP2000087254A5
Application number: JP1999089982A
Authority: JP
Filing date: 1999-03-30
Publication date: 2005-06-09

Description

本発明で用いるリン酸亜鉛化成処理液の中には、金属表面の酸化膜を破壊し、エッチング反応を補助するエッチング助剤、皮膜の密着性や酸、アルカリに対する化学的安定性を向上させるための他の金属イオン等の従来使用されてきた添加成分を含有させることができる。
エッチング助剤としてはフッ化物イオン、珪フッ化物イオン等が挙げられる。これらはナトリウム塩、アンモニウム塩または遊離の酸（フッ化水素酸、珪フッ化水素酸等）として処理液中に含有させることができる。エッチング助剤の濃度は０．１〜２．０ｇ／Ｌが好ましい。
他の金属イオンとしては、主として皮膜の密着性を向上させるニッケルイオン（Ｎｉ²⁺）、銅イオン（Ｃｕ²⁺）、コバルトイオン（Ｃｏ²⁺）等および／または主として皮膜の化学的安定性（耐酸性、耐アルカリ性）を向上させるマンガンイオン（Ｍｎ²⁺）、マグネシウムイオン（Ｍｇ²⁺）、カルシウムイオン（Ｃａ²⁺）等を使用できる。これらは硝酸塩、リン酸塩等として処理液中に含有させることができる。他の金属イオンの濃度は、銅イオンでは５〜５０ｍｇ／Ｌ、その他の金属イオンでは０．１〜３．０ｇ／Ｌが好ましい。
本発明の処理液中にこれらの成分が含有されていても、個々の成分が個々の作用効果を十分に発揮することができるので、何ら問題はない。 In the zinc phosphate chemical conversion treatment solution used in the present invention, an etching aid for destroying the oxide film on the metal surface and assisting the etching reaction, and improving the adhesion of the film and the chemical stability to acid and alkali In addition, conventionally used additive components such as other metal ions can be contained.
The etching aid may, for example, be a fluoride ion or a silicon fluoride ion. These can be contained in the treatment solution as sodium salts, ammonium salts or free acids (hydrofluoric acid, silicohydrofluoric acid, etc.). The concentration of the etching aid is preferably 0.1 to 2.0 g / L.
As other metal ions, nickel ions (Ni ²⁺ ), copper ions (Cu ²⁺ ), cobalt ions (Co ²⁺ ), etc. mainly improving the adhesion of the film and / or mainly the chemical stability of the film ( Manganese ions (Mn ²⁺ ), magnesium ions (Mg ²⁺ ), calcium ions (Ca ²⁺ ) and the like that improve acid resistance and alkali resistance can be used. These can be contained in the treatment liquid as nitrate, phosphate and the like. The concentration of other metal ions is preferably 5 to 50 mg / L for copper ions and 0.1 to 3.0 g / L for other metal ions.
Even if these components are contained in the treatment liquid of the present invention, there is no problem since the individual components can sufficiently exert their respective effects.

実施例７
水溶液５にＨＬＢ１６．６のポリオキシエチレンアルキルエーテル：２．５ｇ／ＬとＮＯＸ−ＲＵＳＴ３２０：７．０ｇ／Ｌ（界面活性剤１００重量部に対して２８０重量部）を添加し、ホモジナイザーを用いて乳化した（６０００ｒｐｍ、５分間）。さらに、硫酸ヒドロキシルアンモニウムをヒドロキシルアンモニウムイオンとして１．０ｇ／Ｌ添加し、処理液温度を７０℃とした。
上記処理液を用いて油分付着炭素鋼鋼材を３００秒間浸漬処理した。皮膜重量は１２．５ｇ／ｍ²、皮膜被覆面積率は１００％、皮膜外観は均一であった。 Example 7
Add polyoxyethylene glycol ether of HLB 16.6: 2.5 g / L and NOX-RUST 320: 7.0 g / L (280 parts by weight with respect to 100 parts by weight of surfactant) to aqueous solution 5, and use a homogenizer Emulsified (6000 rpm, 5 minutes). Furthermore, 1.0 g / L of hydroxyl ammonium sulfate as hydroxyl ammonium ion was added, and the treatment solution temperature was adjusted to 70.degree.
The oil-adhered carbon steel material was subjected to immersion treatment for 300 seconds using the treatment liquid. The coating weight was 12.5 g / m ² , the coating area ratio was 100%, and the coating appearance was uniform.

Claims

An oil attached steel material characterized by being an aqueous solution containing 0.1-10 g / L of mineral oil containing zinc ion, phosphate ion and a chemical conversion accelerator and emulsified with polyoxyethylene alkyl ether of HLB 12-17. Degreasing and Zinc Phosphate Conversion Treatment Solution.

The degreasing and zinc phosphate conversion treatment solution according to claim 1, containing 1.5 to 20 g / L of zinc ion and 10 to 50 g / L of phosphate ion, and having a free acidity of 0.5 to 15 points.

The degreasing according to claim 1, which contains 1.5 to 5.0 g / L of zinc ions and 10 to 20 g / L of phosphate ions, and has a free acidity of 0.5 to 4.0 points. Zinc phosphate conversion treatment solution.

The degreasing and phosphorus composition according to claim 1, which contains 5-20 g / L of zinc ions and 10-50 g / L of phosphate ions, and has a free acidity of 4.0 to 15 points, for the formation of lubricating underlayers or anti-rust films. Acid zinc conversion solution.

The formation accelerator is selected from nitrite ion, hydroxyl ammonium ion, chlorate ion, nitrobenzene sulfonate ion and hydrogen peroxide, and the concentration thereof is 0.05 to 2.0 g / L. The degreasing and zinc phosphate conversion treatment liquid according to any one of the preceding claims.

5. The method according to claim 1, wherein the formation accelerator is a nitrite ion having a concentration of 50 to 200 mg / L, or a hydroxyl ammonium ion having a concentration of 0.5 to 2.0 g / L. The degreasing and zinc phosphate chemical conversion treatment liquid according to any one of the above.

The said polyoxyethylene alkyl ether is 0.5-5.0 g / L, and the said mineral oil is 20-300 weight part with respect to 100 weight part of said polyoxyethylene alkyl ether, Any one of Claims 1-6 Degreasing and zinc phosphate conversion treatment solution described in the above.

The degreasing and zinc phosphate conversion treatment according to any one of claims 1 to 7, which further comprises 0.1 to 2.0 g / L of an etching aid selected from fluoride ion and silicofluoride ion as a further component. liquid.

As further components, nickel ions to improve the adhesion of the film, other metal ions selected from copper ions and cobalt ions, and / or manganese ions, magnesium ions and calcium to improve the chemical stability of the film The degreasing and zinc phosphate conversion treatment solution according to any one of claims 1 to 8, which contains another metal ion selected from ions.

Two-component type consisting of an aqueous solution containing 0.1-10 g / L of mineral oil containing zinc ion and phosphate ion and emulsified with polyoxyethylene alkyl ether of HLB 12 to 17 and an aqueous solution containing nitrite ion A degreasing and zinc phosphate conversion treatment solution for oil-adhered steel materials, which can be made into the degreasing and zinc phosphate conversion treatment solution according to any one of claims 1 to 9 when the both are mixed; Degreasing and zinc phosphate conversion treatment solution.