JPH0526871B2 - - Google Patents
Info
- Publication number
- JPH0526871B2 JPH0526871B2 JP59223882A JP22388284A JPH0526871B2 JP H0526871 B2 JPH0526871 B2 JP H0526871B2 JP 59223882 A JP59223882 A JP 59223882A JP 22388284 A JP22388284 A JP 22388284A JP H0526871 B2 JPH0526871 B2 JP H0526871B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- zinc phosphate
- iron
- fluorine
- phosphate treatment
- 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 - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 99
- 239000000463 material Substances 0.000 claims description 78
- 229910052782 aluminium Inorganic materials 0.000 claims description 66
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 58
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 58
- 229910052742 iron Inorganic materials 0.000 claims description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 45
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 30
- 239000011737 fluorine Substances 0.000 claims description 30
- 229910052731 fluorine Inorganic materials 0.000 claims description 30
- -1 aluminum ion Chemical class 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 13
- 238000012360 testing method Methods 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009503 electrostatic coating Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229940085991 phosphate ion Drugs 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/77—Controlling or regulating of the coating process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/362—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing also zinc cations
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、アルミ材と鉄材とのリン酸亜鉛処理
を同一のフツ素系リン酸亜鉛処理液によつて行う
ようにしたアルミ材と鉄材の化成処理方法に関す
るものである。Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for treating aluminum and iron materials with zinc phosphate treatment using the same fluorine-based zinc phosphate treatment solution. The present invention relates to a chemical conversion treatment method.
（従来技術）
例えば自動車ボデイ、家電製品の枠体のような
金属材表面に塗装を行う場合、塗料との密着性向
上あるいは耐食性向上のため、これ等の金属材
（表面）をあらかじめ化成処理しておくことが一
般に行われている。この化成処理される金属材
は、主として鉄材であることが多く、この鉄材に
対する化成処理としてはリン酸亜鉛処理が一般に
採用されている。(Prior art) For example, when painting the surface of a metal material such as an automobile body or the frame of a home appliance, the metal material (surface) must be chemically treated in advance to improve adhesion with the paint or to improve corrosion resistance. It is common practice to keep it. The metal material subjected to this chemical conversion treatment is often mainly an iron material, and zinc phosphate treatment is generally adopted as the chemical conversion treatment for this iron material.
ところで、近時は、製品の軽量化等のため、ア
ルミ材が多く使用されるようになつており、例え
ば自動車ボデイのうちボンネツト等をアルミ材で
構成するようなことが考えられている。このよう
に、アルミ材と鉄材との組立体をリン酸亜鉛処理
する場合、必然的に、アルミ材と鉄材とが同一の
リン酸亜鉛処理液によつて処理されることにな
る。 Incidentally, in recent years, aluminum materials have been increasingly used in order to reduce the weight of products, and for example, it is being considered to construct the bonnet and the like of automobile bodies from aluminum materials. In this way, when an assembly of aluminum and iron materials is treated with zinc phosphate, the aluminum and iron materials are necessarily treated with the same zinc phosphate treatment solution.
このように、アルミ材と鉄材とを同一のリン酸
亜鉛処理液によつて化成処理する場合、通常のリ
ン酸亜鉛処理液を使用した場合は格別の支障を生
じないが、フツ素系のリン酸亜鉛処理液を使用し
た場合には不具合を生じる場合もあることが判明
した。すなわち、一般にフツ素系リン酸亜鉛処理
液は、処理速度向上およびリン酸亜鉛皮膜の密着
性向上のために用いられているが、アルミ材と鉄
材とに対して同一のフツ素系リン酸亜鉛処理液を
用いると、アルミ材に対するリン酸亜鉛皮膜形成
上何等問題は生じないが、鉄材に対してはリン酸
亜鉛の皮膜がうまく形成されないあるいは全く形
成されない、というような事態を生じることが判
明した。 In this way, when aluminum and iron materials are chemically treated with the same zinc phosphate treatment solution, there is no particular problem if a normal zinc phosphate treatment solution is used, but fluorine-based phosphorus It has been found that problems may occur when an acid zinc treatment solution is used. In other words, a fluorine-based zinc phosphate treatment solution is generally used to improve processing speed and adhesion of zinc phosphate coatings, but the same fluorine-based zinc phosphate treatment solution is used for aluminum and iron materials. When using a treatment solution, there is no problem in forming a zinc phosphate film on aluminum materials, but it has been found that the zinc phosphate film does not form well or does not form at all on iron materials. did.
（発明の目的）
本発明は以上のような事情を勘案してなされた
もので、アルミ材と鉄材とを同一のフツ素系リン
酸亜鉛処理液によつて化成処理する場合に、鉄材
に対して確実にリン酸亜鉛の皮膜が形成されるよ
うにしたアルミ材と鉄材の化成処理方法を提供す
ることを目的とする。(Purpose of the Invention) The present invention has been made in consideration of the above circumstances, and it is possible that when aluminum and iron materials are chemically treated with the same fluorine-based zinc phosphate treatment solution, The purpose of the present invention is to provide a method for chemical conversion treatment of aluminum and iron materials, which ensures the formation of a zinc phosphate film.
（発明の構成）
本発明は、アルミ材と鉄材とを同一のフツ素系
リン酸亜鉛処理液によつて化成処理する場合に、
鉄材に対するリン酸亜鉛の皮膜形成を阻害する要
因を種々研究した結果、このフツ素系リン酸亜鉛
処理液中のアルミニユウムイオン濃度が上記皮膜
形成に極めて大きな影響を与えている、という知
得に基いてなされたものである。(Structure of the Invention) The present invention provides the following advantages: When aluminum materials and iron materials are chemically treated with the same fluorine-based zinc phosphate treatment solution,
As a result of researching various factors that inhibit the formation of zinc phosphate films on iron materials, we have discovered that the aluminum ion concentration in the fluorine-based zinc phosphate treatment solution has an extremely large effect on the film formation. It was based on
具体的には、上記フツ素系リン酸亜鉛処理液中
におけるアルミニユウムイオン濃度を、70ppm以
下に維持しつつアルミ材と鉄材とに対する化成処
理を行うようにしてある。 Specifically, the aluminum material and iron material are subjected to chemical conversion treatment while maintaining the aluminum ion concentration in the fluorine-based zinc phosphate treatment liquid at 70 ppm or less.
このような構成とすることにより、鉄材に対す
るリン酸亜鉛の皮膜が、実用上問題ない程度に確
実に形成されることになる。 With such a configuration, a film of zinc phosphate on the iron material can be reliably formed to an extent that poses no problem in practical use.
上述のように、フツ素系リン酸亜鉛処理液中の
アルミニユウムイオン濃度を70ppm以下とするに
は、その成分調整を行うという手段があるが、好
ましくは、アルミ材と鉄材との組立体に対してフ
ツ素系リン酸亜鉛処理液と接触させることによ
り、該アルミ材と鉄材との化成処理を同時に行う
一方、この組立体におけるアルミ材表面積の鉄材
面積に対する割合を、３／７以下（鉄材７に対し
てアルミ材３以下の割合）とするようにするとよ
い。このように、アルミ材表面の鉄材表面積に対
する割合を３／７以下とすると、フツ素系リン酸
亜鉛処理液中におけるアルミニユウムイオン濃度
は確実に70ppm以下に維持される。 As mentioned above, in order to reduce the aluminum ion concentration in the fluorine-based zinc phosphate treatment solution to 70 ppm or less, there is a way to adjust its components, but it is preferable to adjust the aluminum ion concentration in the assembly of aluminum and iron materials. By bringing them into contact with a fluorine-based zinc phosphate treatment solution, the aluminum material and the iron material are chemically treated simultaneously, while the ratio of the surface area of the aluminum material to the area of the iron material in this assembly is reduced to 3/7 or less (iron material It is preferable that the ratio of the aluminum material be 3 or less to the aluminum material 7. In this way, when the ratio of the surface area of the aluminum material to the surface area of the iron material is set to 3/7 or less, the aluminum ion concentration in the fluorine-based zinc phosphate treatment solution is reliably maintained at 70 ppm or less.
（実施例）
以下本発明を、自動車ボデイを例にとつて詳細
に説明する。(Example) The present invention will be described in detail below using an automobile body as an example.
自動車ボデイの製造工程を示す第１図におい
て、アルミ材をプレス成形することにより、また
鉄材をプレス成形することにより、フエンダ、ボ
ンネル等の所望形状のボデイ構成部品が成形され
るが、このボデイ構造部品のうち、アルミ材によ
るものの全長面積は、鉄材によるものの前表面積
の３／７以下とさるようにされている。 In FIG. 1 showing the manufacturing process of an automobile body, body components of desired shapes such as fenders and bonnels are formed by press-forming aluminum material or press-forming iron material. Among the parts, the total length area of those made of aluminum is 3/7 or less of the front surface area of those made of iron.
上記プレス成形されたアルミ材と鉄材とは、車
体組立工程において互いに一体化された組立体と
された後、順次、湯洗、脱脂（アルカリ処理）、
水洗が行われ、この後表面調整（アルカリ分の中
和）がなされる。次いで、本発明により後述する
化成処理（フツ素系リン酸亜鉛処理液による化成
処理）がなされた後、順次、水洗、乾燥がなされ
る。そして、上記組立体は、下塗（電着塗装）、
中塗（静電塗装）、上塗（静電塗装）がなされる。
なお、上述した各工程のうち、化成処理工程を除
き、従来と同様にして行われる。 The above-mentioned press-formed aluminum material and iron material are made into an integrated assembly in the car body assembly process, and then sequentially washed with hot water, degreased (alkali treatment),
Washing with water is performed, followed by surface conditioning (neutralization of alkaline content). Next, after the chemical conversion treatment (chemical conversion treatment using a fluorine-based zinc phosphate treatment liquid) described below according to the present invention is performed, washing with water and drying are performed in sequence. The above assembly is coated with an undercoat (electrodeposition coating),
An intermediate coat (electrostatic coating) and a top coat (electrostatic coating) are applied.
Incidentally, among the above-mentioned steps, except for the chemical conversion treatment step, the steps are performed in the same manner as in the conventional method.
さて次に、前記化成処理工程について詳述する
と、用いる化成処理液すなわち、フツ素系リン酸
亜鉛処理液としては、次のようなものを用いた。
すなわち、基本成分として、亜鉛イオン0.5〜2.0
ｇ／、リン酸イオン５〜35ｇ／、フツ素イオ
ン0.2ｇ／以上で、促進剤として亜塩酸イオン
0.1〜0.3ｇ／のものを用い、全体として、フツ
素イオン濃度が500ppm〜700ppmとなるように調
整した。なお、その他の含有成分としては、
ClO3、NO3、Ni、Co、Ca、Mn、Cu、Cr等の各
イオンを適宜含むものであつてもよい。 Next, the chemical conversion treatment step will be described in detail. As the chemical conversion treatment liquid, that is, the fluorine-based zinc phosphate treatment liquid, the following was used.
That is, as a basic component, zinc ion 0.5 to 2.0
g/, phosphate ion 5-35g/, fluoride ion 0.2g/ or more, and hydrochlorite ion as an accelerator.
The fluorine ion concentration was adjusted to 500 ppm to 700 ppm as a whole using 0.1 to 0.3 g/g. In addition, other ingredients include:
It may contain appropriate ions such as ClO 3 , NO 3 , Ni, Co, Ca, Mn, Cu, and Cr.
このようなフツ素系リン酸亜鉛処理液を、スプ
レー法（シヤワー法）あるいはデイツプ法（浸漬
法）によつて、前記表面調整された後の自動車ボ
デイとしての組立体に接触させたところ、アルミ
材と鉄材共に、その表面に良好なリン酸亜鉛皮幕
が形成された。 When such a fluorine-based zinc phosphate treatment solution was brought into contact with the surface-conditioned automobile body assembly by a spray method (shower method) or dip method (immersion method), aluminum A good zinc phosphate coating was formed on the surface of both the wood and the iron material.
ここで、フツ素系リン酸亜鉛処理液中のアルミ
ニユウムイオン濃度70ppm以下であれば、鉄材に
対してリン酸亜鉛皮膜が良好に形成される点、お
よびアルミ材表面積の鉄材表面積に対する割合が
３／７以下であれば上記アルミニユウムイオン濃
度が70ppm以下に維持される点について、実験例
を基に説明する。 Here, if the aluminum ion concentration in the fluorine-based zinc phosphate treatment solution is 70 ppm or less, a zinc phosphate film will be formed well on the iron material, and the ratio of the surface area of the aluminum material to the surface area of the iron material will be 3. The point that the aluminum ion concentration is maintained at 70 ppm or less when the aluminum ion concentration is 70 ppm or less will be explained based on an experimental example.
この実験に用いたアルミ材としては、住友金属
株式会社製のもので、アルミニユウム以外の含有
成分として重量割合で、Si0.2％、Fe0.30％、
Cu0.10〜0.40％、Mn0.10％、Mg4.0〜5.0％、
Cr0.10％、Zn1.0〜2.0％、Ti0.10％、その他の不
純物としては合計で0.15％である。 The aluminum material used in this experiment was manufactured by Sumitomo Metals Co., Ltd., and the weight percentages of components other than aluminum were Si0.2%, Fe0.30%,
Cu0.10~0.40%, Mn0.10%, Mg4.0~5.0%,
Cr 0.10%, Zn 1.0-2.0%, Ti 0.10%, and other impurities are 0.15% in total.
また、実験に用いた鉄材としては、新日本製鉄
株式会社製（JISG3141−SPCCB−Ｓ）のものを
用いた。さらに、フツ素系リン酸亜鉛処理液とし
ては、前述したものを用い、実験例全てに渡つて
処理温度は45℃でかつ処理時間は３分である。 Further, the iron material used in the experiment was made by Nippon Steel Corporation (JISG3141-SPCCB-S). Further, as the fluorine-based zinc phosphate treatment solution, the one described above was used, and the treatment temperature was 45° C. and the treatment time was 3 minutes in all experimental examples.
実験例
アルミ材と鉄材とを、個々別々のフツ素系リン
酸亜鉛処理液中に浸漬した場合、すなわち、アル
ミ材専用のフツ素系リン酸亜鉛処理液と鉄材専用
のフツ素系リン酸亜鉛処理液を用意して、アルミ
材の影響が全く無い状態での鉄材に対するリン酸
亜鉛皮膜の形成具合とを調べておくためのもので
あり、次の実験例の前準備としての意味をも
つ。Experimental example: When aluminum material and iron material are immersed in separate fluorine-based zinc phosphate treatment solutions, that is, fluorine-based zinc phosphate treatment solution exclusively for aluminum materials and fluorine-based zinc phosphate treatment solution exclusively for iron materials. This is to prepare a treatment solution and examine the formation of a zinc phosphate film on iron materials without any influence from aluminum materials, and is intended as a preliminary preparation for the next experimental example.
この実験例においては、前記アルミ材によ
り、厚さ0.9mm、長さ150mm、幅70mmのテストピー
スＡを形成し、また前記鉄材により、厚さ0.7mm、
長さ150mm、幅70mmのテストピースＢを形成した。
このテストピースＡ、Ｂを、個々別々の（専用
の）前記記フツ素系リン酸亜鉛処理液中に浸漬し
て、リン酸亜鉛皮膜量を調べたところ、アルミ材
であるテストピースＡについては3.0ｇ／m2であ
り、また鉄材であるテストピースＢについては
2.5ｇ／m2であり、両者共にリン酸亜鉛皮膜が良
好に形成されることが確認された。 In this experimental example, a test piece A with a thickness of 0.9 mm, a length of 150 mm, and a width of 70 mm was formed using the aluminum material, and a test piece A with a thickness of 0.7 mm and a width of 70 mm was formed using the iron material.
A test piece B having a length of 150 mm and a width of 70 mm was formed.
Test pieces A and B were immersed in separate (dedicated) fluorine-based zinc phosphate treatment solutions to examine the amount of zinc phosphate coating. Regarding test piece B, which is 3.0g/ m2 and is made of iron material,
2.5 g/m 2 , and it was confirmed that zinc phosphate films were well formed in both cases.
実験例
フツ素系リン酸亜鉛処理液中におけるアルミニ
ユウムイオン濃度が、鉄材に対するリン酸亜鉛皮
膜の形成に与える影響を調べるためのものであ
る。Experimental Example This experiment was conducted to investigate the influence of aluminum ion concentration in a fluorine-based zinc phosphate treatment solution on the formation of a zinc phosphate film on iron materials.
前記実験例で使用した鉄材からなるテストピ
ースＢを用いて、上記アルミニユウムイオン濃度
を種々変更して該テストピースＢに対して付着し
たリン酸亜鉛皮膜量を調べたところ第２図に示す
ような結果を得た。この第２図から明らかなよう
に、アルミニユウムイオン濃度が70ppmを少し越
えたあたりから、テストピースＢに付着するリン
酸亜鉛皮膜量が急激に減少することが理解され
る。逆に、アルミニユウムイオン濃度が70ppm以
下であれば、実用上十分な量のリン酸亜鉛皮膜が
形成されることが理解される。なお、アルミ材に
対しては、アルミニユウムイオン濃度に関係な
く、常に良好なリン酸亜鉛皮膜が形成されること
を確認た。 Using the test piece B made of the iron material used in the above experimental example, the amount of zinc phosphate film attached to the test piece B was investigated by varying the aluminum ion concentration, as shown in Figure 2. I got good results. As is clear from FIG. 2, it is understood that the amount of zinc phosphate film adhering to test piece B rapidly decreases when the aluminum ion concentration slightly exceeds 70 ppm. Conversely, it is understood that if the aluminum ion concentration is 70 ppm or less, a practically sufficient amount of zinc phosphate film will be formed. It was confirmed that a good zinc phosphate film was always formed on aluminum material, regardless of the aluminum ion concentration.
実験例
アルミ材表面積の鉄材表面積に対する割合が、
フツ素系リン酸亜鉛処理液中におけるアルミニユ
ウムイオン濃度に与える影響を調べるものであ
る。この実験例では、前述したアルミ材と鉄材
とから適宜の大きさを有するテストピースを用意
して、アルミ材からなるテストピースと鉄材とか
らなるテストピースを用意して、アルミ材からな
るテストピースと鉄材からなるテストピースとの
個数割合等を調整することにより、上記表面積割
合を調整した。そして、、所定の表面積割合を有
するように組合されたものをそれぞれ多数個用意
する一方、この表面積割合の数に応じた分だけ専
用のフツ素系リン酸亜鉛処理液を用意して、表面
積割合毎に専用のフツ素系リン酸亜鉛処理液を使
用してその処理を行つた。Experimental example: The ratio of the aluminum material surface area to the iron material surface area is
The purpose of this study was to investigate the effect on aluminum ion concentration in a fluorine-based zinc phosphate treatment solution. In this experimental example, test pieces of appropriate sizes are prepared from the aforementioned aluminum and iron materials, a test piece made of aluminum material and a test piece made of iron material are prepared, a test piece made of aluminum material is prepared, and a test piece made of aluminum material is prepared. The above surface area ratio was adjusted by adjusting the number ratio of the test piece and the test piece made of iron material. Then, while preparing a large number of combinations each having a predetermined surface area ratio, a dedicated fluorine-based zinc phosphate treatment solution is prepared for each number according to the surface area ratio. Each treatment was carried out using a special fluorine-based zinc phosphate treatment solution.
この実験結果は第３図に示すとおりであり、こ
の第３図から明らかなように、上記表面積割合が
３／７以下であれば、フツ素系リン酸亜鉛処理液
中のアルミニユウムイオン濃度が70ppm以下の時
点で飽和して、これ以上アルミニユウムイオン濃
度が上昇しないこと、すなわち鉄材に対してもリ
ン酸亜鉛皮膜が良好に形成されることが理解され
る。 The results of this experiment are shown in Figure 3, and as is clear from Figure 3, if the above surface area ratio is 3/7 or less, the aluminum ion concentration in the fluorine-based zinc phosphate treatment solution will decrease. It is understood that the aluminum ion concentration reaches saturation at 70 ppm or less, and the aluminum ion concentration does not increase any further, that is, a zinc phosphate film is well formed even on iron materials.
（発明の効果）
本発明は以上述べたことから明らかなように、
アルミ材と鉄材とを同一のフツ素系リン酸亜鉛処
理液によつて処理する場合に、アルミ材に対して
は勿論のこと、鉄材に対しても確実にリン酸亜鉛
皮膜を形成することができる。特に、本発明は、
アルミ材と鉄材とを同時に化成処理せざるを得な
い場合に効果的である。(Effects of the Invention) As is clear from the above, the present invention has the following advantages:
When treating aluminum and iron materials with the same fluorine-based zinc phosphate treatment solution, it is possible to reliably form a zinc phosphate film not only on the aluminum materials but also on the iron materials. can. In particular, the present invention
This is effective when it is necessary to chemically treat aluminum and iron materials at the same time.
第１図は本発明方法が適用された自動車ボデイ
の製造工程を示す工程図。第２図はアルミニユウ
ムイオン濃度と鉄材に対するリン酸亜鉛皮膜量と
の関係を示す図。第３図はアルミ材表面積の鉄材
表面積に対する割合とフツ素系リン酸亜鉛処理液
中におけるアルミニユウムイオン濃度との関係を
示す図。
FIG. 1 is a process diagram showing the manufacturing process of an automobile body to which the method of the present invention is applied. FIG. 2 is a diagram showing the relationship between aluminum ion concentration and zinc phosphate coating amount on iron material. FIG. 3 is a diagram showing the relationship between the ratio of the surface area of aluminum material to the surface area of iron material and the aluminum ion concentration in the fluorine-based zinc phosphate treatment solution.
Claims (1)
鉛処理とを、同一のフツ素系リン酸亜鉛処理液に
よつて行うようにしたアルミ材と鉄材の化成処理
方法であつて、 前記フツ素系リン酸亜鉛処理液中のアルミニユ
ウムイオン濃度を70ppm以下に維持しつつ、前記
リン酸亜鉛処理を行う、 ことを特徴とするアルミ材と鉄材の化成処理方
法。 ２ 特許請求の範囲第１項において、前記アルミ
材と鉄材との組立体に対して前記フツ素系リン酸
亜鉛処理液を接触させることにより、該アルミ材
と鉄材とのリン酸亜鉛処理が同時に行われ、かつ
上記組立体における鉄材の表面積に対するアルミ
材の表面積を３／７以下とすることにより、前記
アルミニユウムイオン濃度が70ppm以下となるよ
うにされている、ことを特徴とするアルミ材と鉄
材の化成処理方法。[Claims] 1. A chemical conversion treatment method for aluminum and iron materials in which the zinc phosphate treatment of aluminum materials and the zinc phosphate treatment of iron materials are performed using the same fluorine-based zinc phosphate treatment solution. A method for chemical conversion treatment of aluminum and iron materials, characterized in that the zinc phosphate treatment is performed while maintaining the aluminum ion concentration in the fluorine-based zinc phosphate treatment solution to 70 ppm or less. 2. In claim 1, by bringing the fluorine-based zinc phosphate treatment solution into contact with the assembly of the aluminum material and iron material, the aluminum material and the iron material are simultaneously subjected to zinc phosphate treatment. and the surface area of the aluminum material to the surface area of the iron material in the assembly is set to 3/7 or less, thereby making the aluminum ion concentration 70 ppm or less. Chemical conversion treatment method for iron materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22388284A JPS61104089A (en) | 1984-10-26 | 1984-10-26 | Chemical conversion treatment of aluminum material and iron material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22388284A JPS61104089A (en) | 1984-10-26 | 1984-10-26 | Chemical conversion treatment of aluminum material and iron material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61104089A JPS61104089A (en) | 1986-05-22 |
| JPH0526871B2 true JPH0526871B2 (en) | 1993-04-19 |
Family
ID=16805184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22388284A Granted JPS61104089A (en) | 1984-10-26 | 1984-10-26 | Chemical conversion treatment of aluminum material and iron material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61104089A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100197145B1 (en) * | 1989-12-19 | 1999-06-15 | 후지이 히로시 | Method for phosphating metal surface with zinc phosphate |
| JPH07100870B2 (en) * | 1990-04-24 | 1995-11-01 | 日本ペイント株式会社 | Method for treating zinc phosphate coating on metal surface |
| JPH04341574A (en) * | 1991-05-18 | 1992-11-27 | Nippon Paint Co Ltd | Treatment of zinc phosphate onto metal surface |
| JP4648058B2 (en) * | 2005-04-01 | 2011-03-09 | 日本パーカライジング株式会社 | Phosphate treatment method and electrodeposition coating treatment method for automobile body |
-
1984
- 1984-10-26 JP JP22388284A patent/JPS61104089A/en active Granted
Non-Patent Citations (1)
| Title |
|---|
| ZINC PHOSPHATE PRETREATMENT SYSTEMS FOR ALUMINUM-STEEL ASSEMBLIES=1974 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61104089A (en) | 1986-05-22 |
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