JPS5887280A - Chromate treatment of steel plate plated with zinc or zinc alloy - Google Patents
Chromate treatment of steel plate plated with zinc or zinc alloyInfo
- Publication number
- JPS5887280A JPS5887280A JP18496881A JP18496881A JPS5887280A JP S5887280 A JPS5887280 A JP S5887280A JP 18496881 A JP18496881 A JP 18496881A JP 18496881 A JP18496881 A JP 18496881A JP S5887280 A JPS5887280 A JP S5887280A
- Authority
- JP
- Japan
- Prior art keywords
- zinc
- film
- corrosion resistance
- chromate treatment
- titanium sulfate
- 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
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
- C23C22/05—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
- C23C22/37—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 hexavalent chromium compounds
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は亜鉛または亜鉛合金めっき鋼板のクロメート処
理方法に係り、特に耐食性を向上できるクロメート処理
方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chromate treatment method for zinc or zinc alloy coated steel sheets, and particularly to a chromate treatment method capable of improving corrosion resistance.
一般に亜鉛または亜鉛合金めっき鋼板はそのままでは白
さびや黄さびを発生し易いためクロメート処理が施され
ている。最近自動車部品、電気部品等を主に未塗装の亜
鉛または亜鉛合金めっき鋼板の需要が増加し、そのため
り四メート処理は一次防錆を目的に施すという考えから
最終的な防錆を果すべく高度の耐食性を有することが必
要となってきた。Generally, zinc or zinc alloy coated steel sheets are subject to chromate treatment because they tend to develop white rust or yellow rust if left as is. Recently, there has been an increase in demand for unpainted zinc or zinc alloy coated steel sheets mainly for automobile parts, electrical parts, etc. Therefore, 4-metal treatment is considered to be applied for the purpose of primary rust prevention, and is highly advanced to achieve final rust prevention. It has become necessary to have corrosion resistance.
このクロメート処理における処理液組成ならびに処理方
法については、従来から数多くの提案がされているが、
いまだ十分な耐食性を与える処理方法は確立されていな
い。Many proposals have been made regarding the treatment solution composition and treatment method for this chromate treatment.
A treatment method that provides sufficient corrosion resistance has not yet been established.
この原因は、おそらく亜鉛または亜鉛合金めつき表面は
複雑で、しかも不均質な酸化膜で覆われているので従来
の処理液で通常の一次防錆に必要とする厚みのクロメー
ト処理を施しても、強固でち密なりロメート皮膜がめつ
き表面に形成されにくいためと推定される。このように
従来のクロメート処理方法においては十分な耐食性が得
ケれず、またそのため塗装しでも塗装後の塗膜の耐食性
および密着性が劣っていた。The reason for this is probably that the zinc or zinc alloy plated surface is complex and covered with an inhomogeneous oxide film, so even if chromate treatment is applied to the thickness required for normal primary rust prevention using conventional treatment solutions, This is presumed to be because the romate film is hard to form on the plating surface because it is strong and dense. As described above, sufficient corrosion resistance cannot be obtained in the conventional chromate treatment method, and even if it is painted, the corrosion resistance and adhesion of the coated film are poor.
そこで本発明者はさぎにこの問題点を解消するクロメー
ト処理液として水溶性６価クロム化合物にアルミニウム
弗素化合物を添加した処理液を開発し、特開昭５５−４
４５３７および特願昭５４−３３０５３号で開示した。Therefore, the present inventors developed a chromate treatment solution in which an aluminum fluorine compound was added to a water-soluble hexavalent chromium compound as a chromate treatment solution to solve this problem.
4537 and Japanese Patent Application No. 54-33053.
上記のクロメート処理においでは、例えば溶融めっき鋼
板の場合、未塗装の場合の耐食性はＪＴＳＺ２３７１に
準拠したツルトスブレーテスト（以下単にＳＳＴと称す
る）において１００時間時間上白さびが発生せず、また
塗装後の塗膜の密着性ならびに耐食性は、通常のりん酸
度膜の場合より著しく向−卜させることができ丸
しかしながら、更に高度の耐食性や塗装性を必要とする
分野に亜鉛または亜鉛合金めつき鋼板を使用する場合、
上記のりｐメート処理液ではまだ不十分であり、新技術
の開発が要望されでいた。In the above-mentioned chromate treatment, for example, in the case of hot-dip galvanized steel sheets, the corrosion resistance of unpainted steel sheets is determined by the fact that no white rust occurs for 100 hours in the Tsurtos Brake Test (hereinafter simply referred to as SST) in accordance with JTSZ2371, and after painting. The adhesion and corrosion resistance of the coating film can be significantly improved compared to ordinary phosphoric acid coatings. If you use
The above-mentioned glue pmate treatment solution was still insufficient, and there was a demand for the development of a new technology.
本発明の目的は、上記の要望に応えより高度の耐食性な
らびに塗装性を有する亜鉛または亜鉛合金めつき鋼板に
対するクロメート処理方法を提供するにある。An object of the present invention is to provide a chromate treatment method for zinc or zinc alloy coated steel sheet having higher corrosion resistance and paintability in response to the above-mentioned needs.
本発明の要旨とするところは次の通りである。The gist of the present invention is as follows.
すなわち水溶性６価クロム化合物Ｃｒｙ、 、 Ｎａ、
Ｃｒ、Ｏ，。That is, water-soluble hexavalent chromium compounds Cry, , Na,
Cr, O,.
Ｋ、Ｃｒ、０． 、 Ｎａ２Ｃｒｙ４’＋ Ｋ、ＣｒＯ
４のうちから選ばれた１種または２種以上をＣｒ 換
算にて１〜５０ ｔ／ｌ 。K, Cr, 0. , Na2Cry4'+ K, CrO
1 to 50 t/l in terms of Cr of one or two or more selected from 4.
アルミニウム弗素化合物Ｎａ＠ＡｔＦｍ ＋ Ｋ、Ａｚ
Ｆｅ ＋（ＮＨ４）、ＡｚＦ、 のうちがら選ばれた
１種または２種以上を４×１０〜５Ｘ１０ｍｏ々Ｉ、お
よび硫酸チタン、硫酸チタンカリのうち少くとも１種を
１×１０〜３ Ｘ １０ ｍａｔ／ｌを含有する水溶
液によって亜鉛または亜鉛合金めっき鋼板表面に耐食性
のすぐれた皮膜を形成させることを特徴とする亜鉛また
は亜鉛合金めつき鋼板に対するクロメート処理方法であ
る。Aluminum fluorine compound Na@AtFm + K, Az
Fe + (NH4), AzF, 4 x 10 to 5 x 10 mo I of one or more selected from the following, and 1 x 10 to 3 x 10 mat of at least one of titanium sulfate and potassium titanium sulfate. This is a chromate treatment method for a zinc or zinc alloy coated steel sheet, which is characterized by forming a film with excellent corrosion resistance on the surface of the zinc or zinc alloy coated steel sheet using an aqueous solution containing .
本発明は水溶性６価クロム化合物とアルミニウム弗素化
合物の水溶液に限定蓋の硫酸チタニウム。The present invention is limited to titanium sulfate in aqueous solutions of water-soluble hexavalent chromium compounds and aluminum fluorine compounds.
硫酸チタンカリウムを添加した処理液によって亜鉛また
は亜鉛合金めつき鋼板をクーメート処理するのが特徴で
あるが、これは処理液中の硫酸チタニウム、硫酸チタニ
ウ弄カリが皮膜形成反応時に６＋
Ｃｒ からＣｒ への還元反応を促進するとともに
、みずからも皮膜構成物質となり、ち密で強固なりロメ
ート皮膜を形成し、すぐれた耐食性と塗装性を示すもの
と考えられる。The feature is that zinc or zinc alloy coated steel sheets are coumatized using a treatment solution containing titanium potassium sulfate, which converts titanium sulfate and potassium sulfate in the treatment solution from 6+ Cr to Cr during a film-forming reaction. It is thought that it not only promotes the reduction reaction of , but also becomes a film constituent material, forming a dense and strong romate film, and exhibiting excellent corrosion resistance and paintability.
次に本発明の水溶液成分の限定理由について説明する。Next, the reasons for limiting the aqueous solution components of the present invention will be explained.
水溶性６価クロム化合物；
水溶性６価クロム化合物は耐食性皮膜を形成する基本原
子であｌ）、ＣｒＯ，濃度がＣｒ換算１ｆμ未満におい
てはアルミニウム弗素化合物、硫酸チタンが存在しても
短時間処理によってすぐれた耐食性が得られず、５０
ｆ／ｌを越すと着色皮膜となって金属光沢を失った９、
色むらを生じて外観を著しく損うのでＣｒ 換算にて１
〜５０ ｆ／ｌに限定した。Water-soluble hexavalent chromium compound; Water-soluble hexavalent chromium compound is the basic atom that forms a corrosion-resistant film (1), CrO, and when the concentration is less than 1 fμ in terms of Cr, it can be treated for a short time even if aluminum fluorine compounds and titanium sulfate are present. Excellent corrosion resistance could not be obtained due to
When f/l was exceeded, it became a colored film and lost its metallic luster9.
1 in terms of Cr as it causes uneven color and significantly impairs the appearance.
~50 f/l.
アルミニラ弗素化合物Ｓ
アルミニラ弗素化合物はクロメート皮膜の形成に必要で
あるが％ ４ ｘ １０ ｍｏＬ／を未満ではすぐれ
た耐食性を有するクロメート皮膜が形成されず、また５
Ｘ １０ ｍｏ！７１を越す含有は皮膜形成時に亜
鉛または亜鉛合金表面の溶解反応が著しく進行し皮膜の
形成が行われず、また溶解度を献えて不溶解分が沈積す
ると処理板の外観を損うので、４×１０〜５ Ｘ １０
ｍａｋｌの範囲に限定した。Aluminum fluorine compound S Aluminum fluorine compound is necessary for forming a chromate film, but if the amount is less than 4 x 10 mol/%, a chromate film with excellent corrosion resistance will not be formed;
X 10 mo! If the content exceeds 71, the dissolution reaction on the surface of zinc or zinc alloy will proceed significantly during film formation, and the film will not be formed, and if the solubility is sacrificed and undissolved matter is deposited, the appearance of the treated plate will be impaired. ~5 x 10
limited to the range of makl.
硫酸チタン、硫酸チタンカリニ
硫酸チタン、硫酸チタンカリは前記の如（Ｃｒ をＣ
ｒ３＋に還元するとともに、皮膜構成に有効であるが、
Ｉ Ｘ １０ ｍｏ！ｊｔ未満ではすぐれた皮膜が構
成されず、また３ Ｘ １０ ｍｏ！７’Ｌを越す含
有は亜鉛または亜鉛合金表面の溶解反応が進行し皮膜形
成がほとんど行われないので、含有量をｌＸｌ０”〜３
Ｘ１０ｍｏ々ｌの範囲に限定した。Titanium sulfate, titanium carinide titanium sulfate, titanium potassium sulfate are as described above (Cr
It reduces to r3+ and is effective for film composition, but
I x 10 mo! If it is less than jt, an excellent film will not be formed, and if it is less than 3 x 10 mo! If the content exceeds 7'L, the dissolution reaction on the surface of zinc or zinc alloy will progress and almost no film will be formed.
The amount was limited to 10 mol.
上記の限定成分を含有する処理液によるクロメート処理
、方法は、スプレー、浸漬また１、１０−ルコーターの
いずれの方法を使用してもよく、また適切な処理温度な
らびに処理時間はＣｒ 化合物、アルミニウム弗素化
合物の種類や濃度および亜鉛または亜鉛合金めつき鋼板
の種類によって若干異なるが、温度４０〜８０℃におい
で約１秒１）上の反応時間が必要である。The chromate treatment with a treatment solution containing the above-mentioned limiting components may be carried out by spraying, dipping or a 1,10-layer coater, and the appropriate treatment temperature and treatment time are Cr compound, aluminum fluoride Although it varies slightly depending on the type and concentration of the compound and the type of zinc or zinc alloy coated steel sheet, a reaction time of about 1 second 1) is required at a temperature of 40 to 80°C.
次に本発明の効果を基礎実験によって説明する。Next, the effects of the present invention will be explained by basic experiments.
第１図は最も安価で実用的なＣｒｙ、を使用した場合で
あって、溶融亜鉛めっき鋼板をＣｒｙ、 ２０ ｔ／ｌ
。Figure 1 shows the case where Cry, the cheapest and most practical method, is used;
.
（Ｃｒ換算１０２μ） −Ｎａ、Ａｌｙ、 ３ ｆ／ｌ
（１，４Ｘ １０′ｍｏｔ７ｔ ） −’ｒ； （ｓ
ｏ、）、 ２ ｔ７１ （Ｂ ｘ １０ ｍｏνｔ〕の
処理液で６０℃、２秒の浸漬クロメート処理した本発明
法の場ａのＳＳＴによる耐食性の経時変化を、本発明者
らがさぎに提案したＣｒｙ、 ２０ ？／ｌ −Ｎａｓ
ＡｔＦ６３ ｆ／ｌの処理液による従来法の場合と比較
して示した。従来法においてはＳＳＴによる初白さび発
生時間は約１１０時間であるのに対し、本発明法におい
では、２００時間まで白さび発生は全く認められず、３
００時間においても約２０％の白ざび発生率にとどまっ
た。(Cr equivalent: 102 μ) -Na, Aly, 3 f/l
(1,4X 10'mot7t) -'r; (s
o, ), 2 t71 (B Cry, 20?/l -Nas
A comparison is shown with a conventional method using a treatment solution of AtF63 f/l. In the conventional method, the initial white rust generation time by SST is about 110 hours, whereas in the method of the present invention, no white rust was observed at all until 200 hours.
Even at 00 hours, the incidence of white rust remained at about 20%.
第２図はＣｒＯ３２０ｆ／Ｌ （Ｃｒ換算１０ ｆ／ｌ
） −ＮａｓＡＩＦｅ ３ ｆ／ｌ （１，４Ｘ １０
ｍｏｌｌｌ ）の水溶液１、： Ｔ ＋ （５０４
）ｔをＯ〜７ ｆ／ｌ （２，９Ｘ １０ ｍｏ１７
’ｌ ）の範囲で添加して溶融亜鉛めっき鋼板を浸漬し
クロメート処理した場合の５ＳＴ２５０時間における白
さび発生率を示した。なお比較のため、Ｃｒｙ。Figure 2 shows CrO320f/L (Cr equivalent: 10 f/l
) -NasAIFe 3 f/l (1,4X 10
moll ) aqueous solution 1,: T + (504
)t to O~7 f/l (2,9X 10 mo17
The white rust occurrence rate in 250 hours of 5ST is shown when a hot-dip galvanized steel sheet is chromate treated by immersing it in the range of 1). For comparison, Cry.
２０ ｔ／ｌ −Ｎａ、ＡｔＦ’ｅ ３ ｆμの水溶Ｈ
＋： 上Ｆ２ （７）Ｔ ｉ （Ｓｏ、）２のＳＯ，に
相当する＋（、Ｓｏ、を添加してこの処理液でクロメー
ト処理を行い同様に白さび発生率を図示した。Ｃｒｙ、
−Ｎａ、ＡｔＦｅ溶液の場合は５ＳＴ２５０時間にお
いて白さび発生面積率が８０％、Ｃｒｙ、 −Ｎａ、Ａ
ｔＦｅ 溶液にＨ，８０，を添加すると徐々に低下し
最低３５％の発生率であるが、本発明法においてはＴｉ
（ＳＯ，）、濃度０．５〜６ ？／ｌ （２Ｘ３
１０ 〜２．５ Ｘ １０ ｍｏ１７’Ｌ ）の範囲
において白さび発生は全く認められない、すなわちＣｒ
ｙ、 −Ｎａ 、ＡｔＦ、溶液に対し、Ｔｉ（８０，
）、を添加すると、無添加あるいはＨ，Ｓｏ、を添加し
た場合に比べて著しく耐食性が向上することが分る。20 t/l - Na, AtF'e 3 fμ aqueous solution H
+: Upper F2 (7)T i (So, )2 corresponds to SO, +(, So, was added, chromate treatment was performed with this treatment solution, and the white rust incidence rate was similarly illustrated.Cry,
In the case of -Na, AtFe solution, the white rust occurrence area rate was 80% in 5ST 250 hours, Cry, -Na, A
When H,80, is added to the tFe solution, the occurrence rate gradually decreases to a minimum of 35%, but in the method of the present invention, the occurrence rate of Ti
(SO,), concentration 0.5-6? /l (2×3 10 to 2.5
y, -Na, AtF, solution, Ti(80,
), it can be seen that the corrosion resistance is significantly improved compared to when no additive is added or when H and So are added.
実施例
溶融亜鉛めっき鋼板および溶融亜鉛合金めっき鋼板を本
発明法および従来法にてクロメート処理を実施し、その
耐食性、塗膜の密着性および塗膜の耐食性を調査しその
結果を第１表に示しｔ二 ただし処理液組成中のＣｒ
ｙ、含有量はＣｒ換算ｆ／ｌを示している。塗膜試験は
メラミンアルキッド°系塗料を２回塗装、１回焼付した
３０〜３５μ厚の使膜に対して行った。Examples Hot dip galvanized steel sheets and hot dip zinc alloy coated steel sheets were subjected to chromate treatment using the method of the present invention and the conventional method, and the corrosion resistance, adhesion of the paint film, and corrosion resistance of the paint film were investigated. The results are shown in Table 1. Indicated by t2 However, Cr in the treatment liquid composition
y, content indicates Cr conversion f/l. The coating test was carried out on a 30 to 35 μm thick film coated twice with melamine alkyd °-based paint and baked once.
各試験は次の条件で実施した。Each test was conducted under the following conditions.
エリクセンテスト二二すクセン試験機で５ｍ押出し。Extrude 5m using Erichsen test 22 test machine.
デュポンテスト：ポンチ径１／２インチ、荷重１吟。DuPont test: Punch diameter 1/2 inch, load 1 gin.
落下高さ４０１Ｍ。Fall height 401M.
サイクルテスト二クロスカットを入れた試片をＳＳＴで
８時間噴霧、１６時時間
比を１サイクルとし１５日間繰
返シ、その後クロスカット部の
セロテープ剥離試験。Cycle test A test piece with two crosscuts was sprayed with SST for 8 hours, 16:00 time ratio was used as one cycle, and repeated for 15 days. Then, a cellophane tape peeling test was performed on the crosscuts.
試験結果は、５：異常なし、４：わずかに亀裂、３ニ一
部剥離、で評価し表示した。The test results were evaluated and displayed as 5: No abnormality, 4: Slight cracking, and 3: Partial peeling.
第１表から明らかなように、本発明法によるりｐメート
処理を施した亜鉛および亜鉛合金めつき一板は従来法に
比較して、未塗装での耐食性ならびに塗装後の塗膜の密
着性がすぐれていることが分る。As is clear from Table 1, zinc and zinc alloy plated sheets subjected to p-mate treatment by the method of the present invention have better corrosion resistance when unpainted and adhesion of the paint film after painting, compared to the conventional method. It turns out that it is excellent.
本発明法は、上記実施例からも明らかな如く、水溶性６
価クロム化合物およびアルミニウム弗化物を含有する水
溶液に硫酸チタニウム、硫酸チタニウムカリの限定縁を
添加した処理液によって亜鉛または亜鉛合金めっき鋼板
をクロメート処理することによって耐食性および塗装後
の塗膜の耐食性および密着性のすぐれた皮膜を形成する
ことができた。As is clear from the above examples, the method of the present invention is effective for water-soluble 6
Corrosion resistance and corrosion resistance and adhesion of the paint film after painting are improved by chromate treatment of zinc or zinc alloy plated steel sheets using a treatment solution containing titanium sulfate and titanium potassium sulfate limiting edge added to an aqueous solution containing valent chromium compounds and aluminum fluoride. A film with excellent properties could be formed.
第１図はクロメート処理した溶融亜鉛めっき鋼板のＳＳ
Ｔにおける白さび発生面積率の経時変化を示す線図、第
２図は２５０時間ＳＳＴにおける白さび発生面積率とク
ロメート処理液中のＴｉ（Ｓｏ、）。
およびＨ，Ｓｏ、濃度との関係を示す線図である。
代理人中路武雄Figure 1 shows SS of hot-dip galvanized steel sheet treated with chromate.
Figure 2 is a graph showing the change over time in the white rust occurrence area rate at 250 hours SST and the Ti (So,) in the chromate treatment solution. FIG. Agent Takeo Nakaji
Claims (1)
ｒ、Ｏ，。 Ｋ、Ｃｒ、Ｏ，、Ｎａ、ＣｒＯ４、Ｋ、ＣｒＯ４のうち
から選ばれた１種または２種以上をＣｒ換算にて１〜５
０９μ。 アルミニウム弗素化合物Ｎａ、ｋｔＦ、 、 ＫｓＡｔ
Ｆ、 。 （ＮＨ４）、ｋｔＦ、のうちから選ばれた１種または２
種以上を４ Ｘ １０ 〜５ Ｘ １０ ｍｏｌ／ｌ
、および硫酸チタン、硫酸チタンカリのうち少くとも
１種を１×１０−３〜３×１０−２ｍ０Ｌ／ｌを含有す
る水溶液によって亜鉛または亜鉛合金めつき鋼板表面に
耐食性のすぐれた皮膜を形成させることを特徴とする亜
鉛または亜鉛合金めっき鋼板に対するクロメート処理方
法。(1) Water-soluble hexavalent P compound Cry, , Na, C
r, O,. One or more selected from K, Cr, O,, Na, CrO4, K, CrO4, calculated as 1 to 5 in terms of Cr.
09μ. Aluminum fluorine compound Na, ktF, , KsAt
F. (NH4), ktF, one or two selected from
4 x 10 to 5 x 10 mol/l of seeds or more
Forming a film with excellent corrosion resistance on the surface of a zinc or zinc alloy plated steel sheet using an aqueous solution containing at least one of titanium sulfate, titanium sulfate, and potassium titanium sulfate in an amount of 1 x 10-3 to 3 x 10-2 m0L/l. A chromate treatment method for zinc or zinc alloy coated steel sheet, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18496881A JPS5887280A (en) | 1981-11-18 | 1981-11-18 | Chromate treatment of steel plate plated with zinc or zinc alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18496881A JPS5887280A (en) | 1981-11-18 | 1981-11-18 | Chromate treatment of steel plate plated with zinc or zinc alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5887280A true JPS5887280A (en) | 1983-05-25 |
Family
ID=16162496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18496881A Pending JPS5887280A (en) | 1981-11-18 | 1981-11-18 | Chromate treatment of steel plate plated with zinc or zinc alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5887280A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6267180A (en) * | 1985-09-19 | 1987-03-26 | Aisin Seiki Co Ltd | Chromate treatment of fuel pipe made of aluminum alloy material |
| FR2650302A1 (en) * | 1989-07-31 | 1991-02-01 | Omi Int Corp | PROCESSES FOR PREPARING CORROSION RESISTANT ZINC-COBALT SURFACES |
| CN112368348A (en) * | 2018-07-02 | 2021-02-12 | 日本电信电话株式会社 | Coating material |
-
1981
- 1981-11-18 JP JP18496881A patent/JPS5887280A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6267180A (en) * | 1985-09-19 | 1987-03-26 | Aisin Seiki Co Ltd | Chromate treatment of fuel pipe made of aluminum alloy material |
| JPH0351793B2 (en) * | 1985-09-19 | 1991-08-07 | Aisin Seiki | |
| FR2650302A1 (en) * | 1989-07-31 | 1991-02-01 | Omi Int Corp | PROCESSES FOR PREPARING CORROSION RESISTANT ZINC-COBALT SURFACES |
| CN112368348A (en) * | 2018-07-02 | 2021-02-12 | 日本电信电话株式会社 | Coating material |
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