JPS598354B2 - Composite coated steel plate - Google Patents

Composite coated steel plate

Info

Publication number
JPS598354B2
JPS598354B2 JP1972978A JP1972978A JPS598354B2 JP S598354 B2 JPS598354 B2 JP S598354B2 JP 1972978 A JP1972978 A JP 1972978A JP 1972978 A JP1972978 A JP 1972978A JP S598354 B2 JPS598354 B2 JP S598354B2
Authority
JP
Japan
Prior art keywords
zinc
layer
powder
less
metal
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
Application number
JP1972978A
Other languages
Japanese (ja)
Other versions
JPS54112731A (en
Inventor
勝美 神田
芳夫 林
嘉一 近藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Kohan Co Ltd
Original Assignee
Toyo Kohan Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Kohan Co Ltd filed Critical Toyo Kohan Co Ltd
Priority to JP1972978A priority Critical patent/JPS598354B2/en
Publication of JPS54112731A publication Critical patent/JPS54112731A/en
Publication of JPS598354B2 publication Critical patent/JPS598354B2/en
Expired legal-status Critical Current

Links

Description

【発明の詳細な説明】 本発明は、加工性、耐食性に優れた複合被覆鋼板に係り
、さらに詳しくは、軟鋼板表直に、亜鉛または亜鉛を主
成分とする金属めつき層(すず、クロム、ニッケル、ま
たは亜鉛の金属前めつき層を含む)を第一層とし、その
上層に、亜鉛粉末または亜鉛合金粉末の1種以上と、あ
るいはさらに、鱗片状のアルミニウム、銅、すず、鉛等
の金属粉末あるいはこれらの金属のそれぞれの合金粉末
、あるいは炭素、二硫化モリブデン、二硫化タングステ
ン、または窒化硼素の粉末の一種以上と、残部が有機樹
脂から成る複合材を被覆した複合被覆鋼板に関し、その
目的とするところは、連続的に生産が可能であり、しか
も均一に被覆を形成することにより、優れた耐食性、加
工性を有する二層からなる複合被覆鋼板を提供すること
にある。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite coated steel sheet with excellent workability and corrosion resistance. , nickel, or zinc) as the first layer, and on top of that, one or more zinc powders or zinc alloy powders, or in addition, scaly aluminum, copper, tin, lead, etc. Concerning a composite coated steel sheet coated with a composite material consisting of a metal powder or an alloy powder of each of these metals, or one or more of carbon, molybdenum disulfide, tungsten disulfide, or boron nitride powder, and the balance being an organic resin, The purpose is to provide a composite coated steel sheet consisting of two layers that can be produced continuously and has excellent corrosion resistance and workability by uniformly forming the coating.

従来より、耐食性鋼板として溶融亜鉛めつき鋼板および
電気亜鉛めつき鋼板があつた。これらの亜鉛めつき鋼板
は、腐食雰囲気のきびしいところでは、亜鉛の溶融がは
げしく耐食性が十分ではない。また、耐食性と外観をよ
くするために、カラー塗装が施されているが、亜鉛が溶
融しやすいことから、塗膜にブリスターが発生してしば
しぱトラブルの原因となつていた。そこで、この対策と
[て、クロメート系処理あるいはリン酸塩系の処理等め
つき後の処理が施されてきたが、十分ではなかつた。一
方、亜鉛めつき鋼板は、七の使用される目的に応じて成
形加工を行なつた後、またはさらに、ポルト止め、リベ
ツト止め、あるいは溶接等がなされた後に、刷毛塗り、
スプレーコート、浸漬等の手段により塗装される用途と
しても広く用いられ、同時に、使用目的によつてデイフ
アレンシヤルめつき鋼板か強く望まれている。
Conventionally, hot-dip galvanized steel sheets and electrogalvanized steel sheets have been used as corrosion-resistant steel sheets. These galvanized steel sheets do not have sufficient corrosion resistance in places with severe corrosive atmospheres because the zinc melts rapidly. In addition, color painting is applied to improve corrosion resistance and appearance, but since zinc easily melts, blisters form on the paint film, often causing problems. Therefore, post-plating treatments such as chromate-based treatment or phosphate-based treatment have been taken to counter this problem, but these have not been sufficient. On the other hand, galvanized steel sheets are manufactured by brush painting,
It is also widely used for painting by means such as spray coating and dipping, and at the same time, differentially plated steel sheets are strongly desired depending on the purpose of use.

溶融亜鉛めつき鋼板の場合、電気亜鉛めつき鋼板に比べ
て耐食性は優れているが、片面のみ亜鉛めつき、あるい
はデイフアレンシヤルめつき鋼板を安定して製造するこ
とは高度の技術を必要とし、現在のところ困難な状態で
ある。これに対して電気亜鉛めつき鋼板の場合、片面の
み亜鉛めつきを施すなどいわゆるデイフアレンシヤルめ
つき鋼板を製造することは、溶融亜鉛めつき鋼板に比べ
て容易であり、しかも安定して製造することができるか
、めつき量を407/Rr?以上に増加することは経済
性の点から実用的ではなく、めつき量が制限されるため
に、きびしい腐食雰囲気での使用に対しては耐食性の点
で問題を残しているのが実情である。また前記溶融亜鉛
めつき、あるいは電気亜鉛めつきの他に、鋼板の防錆を
目的として、亜鉛を主成分とする塗料、いわゆるジンク
リツチペイントを塗布する方法があり、これは亜鉛粉末
を有機系一あるいは無機系のバインダーと混練したもの
をロールコート、ナイフコート、スブレーコート、ある
いは浸漬により塗布し、ついで乾燥あるいは加熱処理に
よつて硬化されるものであつた。しかし、この方法では
耐食性を要求される用途・に対しては、40μm以上の
塗膜を形成しなければ、その効果は出てこない。
Hot-dip galvanized steel sheets have superior corrosion resistance compared to electrogalvanized steel sheets, but highly sophisticated technology is required to stably produce single-sided galvanized or differentially galvanized steel sheets. However, it is currently in a difficult situation. On the other hand, in the case of electro-galvanized steel sheets, it is easier to produce so-called differentially-galvanized steel sheets, such as galvanizing only one side, and it is more stable than hot-dip galvanized steel sheets. Is it possible to manufacture the plating amount at 407/Rr? It is not practical from an economic point of view to increase the number of platings above this level, and because the amount of plating is limited, there remains a problem in terms of corrosion resistance when used in a severely corrosive atmosphere. . In addition to the above-mentioned hot-dip galvanizing or electrolytic galvanizing, there is a method of applying zinc-based paint, so-called zinc-rich paint, for the purpose of rust-preventing steel sheets. Alternatively, it was kneaded with an inorganic binder and applied by roll coating, knife coating, spray coating, or dipping, and then hardened by drying or heat treatment. However, this method is not effective for applications requiring corrosion resistance unless a coating film of 40 μm or more is formed.

40μm以上の膜厚では、塗膜形成後加工すると、加工
部の塗膜が剥離して、ジンクリツチペイントの塗装効果
はなくなる。
If the film thickness is 40 μm or more, if the film is processed after being formed, the film will peel off in the processed areas, and the coating effect of the zinc-rich paint will be lost.

このように、ジソクリッチペイントは未加,工部での耐
食性は優れているけれども加工部に問題があつた。そこ
で、電気亜鉛めつき、あるいは亜鉛を主成分とする電気
めつきを施した上層に、前記ジンクリツチペイントの欠
陥を改良した被覆を施すこと・により、加工性、耐食性
、および塗装性がきわめて良好であり、連続的、かつ効
率的に生産することが可能な、特徴のある複合被覆鋼板
を完成した。
As described above, although DiSocrich paint has excellent corrosion resistance in the unprocessed and processed areas, it has problems in the processed areas. Therefore, by applying a coating that improves the defects of the zinc-rich paint to the upper layer of electrogalvanized or zinc-based electroplated coating, processability, corrosion resistance, and paintability are extremely good. We have completed a unique composite coated steel sheet that can be produced continuously and efficiently.

以下本発明の内容について詳しく説明する。まず、複合
被膜を形成されるべき冷延鋼板に、常法の脱脂、酸洗を
行ない、公知の電気亜鉛めつき、あるいは亜鉛を主成分
とする特公昭4919979号のようなめつきを施し、
ついで上層に亜鉛粉末、亜鉛合金粉末の1種以上と、あ
るいはさらに鱗片状のアルミニウム、銅、すず、鉛の金
属粉末、これらの金属のそれぞれの合金粉末、あるいは
炭素、二硫化モリブデン、二硫化タングステン、窒化硼
素粉末の1種以上と、残部が有機樹脂とから成る複合材
を被覆し、乾燥、焼付を行なうものである。ここで、電
気亜鉛めつき、あるいは亜鉛を主成分とする電気めつき
のめつき量は1〜40V/dが適当である。
The contents of the present invention will be explained in detail below. First, the cold-rolled steel sheet on which the composite coating is to be formed is degreased and pickled using conventional methods, and then subjected to known electrogalvanizing or plating as described in Japanese Patent Publication No. 4919979 containing zinc as the main component.
Then, in the upper layer, one or more types of zinc powder or zinc alloy powder, or further scaly metal powder of aluminum, copper, tin, or lead, alloy powder of each of these metals, or carbon, molybdenum disulfide, or tungsten disulfide. , a composite material consisting of one or more types of boron nitride powder and the remainder being an organic resin is coated, dried and baked. Here, the appropriate plating amount for electrogalvanizing or electroplating containing zinc as a main component is 1 to 40 V/d.

1V/d以下になると亜鉛めつきの特徴が得られず、耐
食性が著しく低下する。
If it is less than 1 V/d, the characteristics of galvanizing will not be obtained and the corrosion resistance will be significantly reduced.

こ.れはひきつづいて上層に塗布される複合材の被膜か
直接に冷延鋼板に接する状態もあり、好ましくない。ま
た、40f/d以上になると、耐食性にはプラスである
が、連続生産する場合、生産性の低下か甚だしく、経済
性の面から好ましくない。なお、ここで用いられる亜鉛
を主成分とする電気めつきの方法としては、例えば特公
昭49一19979号があり、亜鉛の単一成分から成る
電気亜鉛めつきを行なつた場合と比べて、上層に被覆さ
れる複合材の密着性、さらには耐食性が優れている。ま
た、このような電気亜鉛めつき、あるいは亜鉛を主成分
とする電気めつきを施した後に、公知のクロメート処理
、あるいはリン酸塩処理等の化成処理を施してもさしつ
かえない。前述した電気亜鉛めつきあるいは亜鉛を主成
分とする電気めつきの層すなわち第一層の厚みは、これ
らの処理の後にさらに被覆される上層の複合被覆材の膜
厚とともに、用途、耐食性と加工性のかね合い、さらに
は生産性、経済性等を考慮して決定されるべきことは言
うまでもない。
child. This is undesirable because the composite film subsequently applied as an upper layer may come into direct contact with the cold-rolled steel sheet. Moreover, when it is 40 f/d or more, it is positive for corrosion resistance, but in the case of continuous production, productivity decreases considerably, which is not preferable from an economical point of view. The method of electroplating using zinc as the main component used here is, for example, Japanese Patent Publication No. 49-19979. The composite material coated on the surface has excellent adhesion and corrosion resistance. Furthermore, after performing such electrogalvanizing or electroplating containing zinc as a main component, a known chemical conversion treatment such as chromate treatment or phosphate treatment may be performed. The thickness of the above-mentioned electrogalvanized or zinc-based electroplated layer, that is, the first layer, depends on the application, corrosion resistance, and workability, as well as the thickness of the upper composite coating material that is further coated after these treatments. Needless to say, decisions should be made taking into account the trade-off, productivity, economic efficiency, etc.

な}、第一層形成に当つて、公知の前めつき、すなわち
、すず前めつき、クロム前めつき、ニツケル前めつきを
施して、第一層の耐食性をさらに向上させ、結果として
複合被覆鋼板の耐食性に好ましい状態を付与することも
できる。
When forming the first layer, known pre-plating, such as tin pre-plating, chrome pre-plating, and nickel pre-plating, is applied to further improve the corrosion resistance of the first layer, resulting in a composite It is also possible to impart favorable corrosion resistance to the coated steel sheet.

例えば、特公昭43−26723号に示されるようなす
ず前めつき処理、特公昭44−25882号に示される
ようなクロム前めつき処理、あるいは特公昭44−28
564号に示されるような二ツケル前めつき処理、さら
には亜鉛前めつき処理を施すことによつて、それぞれ3
V/d未満の極薄前めつき層を形成させることができる
For example, tin front plating treatment as shown in Japanese Patent Publication No. 43-26723, chrome front plating treatment as shown in Japanese Patent Publication No. 44-25882, or Japanese Patent Publication No. 44-28
By applying Futsukaru pre-plating treatment as shown in No. 564 and further zinc pre-plating treatment, 3.
Very thin preplated layers of less than V/d can be formed.

この前めつき層を形成させることにより耐食性の向上が
達成されるが、これに伴う加工性への悪影響(加工性を
阻害する傾向)はまつたく認められない。ここで、これ
らの前めつき処理を施して後、本めつき処理を行なわず
に、第二層形成というケースもあり得るが、これらも本
発明の複合被覆鋼板の範隣に入るものであることはいう
までもない。さて、前記の電気亜鉛めつき、あるいは亜
鉛を主成分とする電気めつきの上に施す被覆材としては
、粒径10Itm以下の粒状あるいは厚み2μm以下の
鱗片状の亜鉛粉末、または亜鉛合金粉末の一種以上を1
0〜95%(重量%を示し以下同じ)、あるいはさらに
、粒径10μm以下の粒状あるいは厚み2μm以下の鱗
片状の、アルミニウム、銅、すず、鉛等の金属粉末、前
記金属のそれぞれの合金粉末、あるいは炭素、二硫化モ
リブデン、二硫化タングステン、窒化硼素の粉末の、一
種以上を量としては被覆量の30%以下加えたものをO
〜95%、さらに残部が有機溶剤型のアクリル系、ポリ
エステル系、ポリブタジエン系、メラミン系、フエノー
ル系、エポキシ系、ウレタン系等の有機樹脂の1種以上
を混練して懸濁液としたものである。この懸濁液を、ロ
ール塗装、ナイフコート等の方法で前記電気亜鉛めつき
鋼板、あるいは亜鉛を主成分とする電気めつき鋼板の上
に2〜20μm塗布し、つづいてこれを乾燥、焼付ける
ことにより複合被覆鋼板を製造する。前記被複材の主成
分となる金属粉末としての亜鉛、亜鉛合金、アルミニウ
ム、銅、すず、鉛、および前記金属のそれぞれの合金は
、その粒径が小さい程緻密な被膜を得ることができ、粒
径10μm以上では被膜がポーラスとなり好ましくない
Although corrosion resistance is improved by forming this pre-plated layer, no adverse effect on workability (tendency to inhibit workability) associated with this is observed. Here, there may be cases in which a second layer is formed after performing these pre-plating treatments without performing the final plating treatment, but these also fall within the scope of the composite coated steel sheet of the present invention. Needless to say. Now, as a coating material to be applied on the above-mentioned electrogalvanizing or electroplating whose main component is zinc, granular zinc powder with a particle size of 10 Itm or less, scale-like zinc powder with a thickness of 2 μm or less, or a type of zinc alloy powder is used. more than 1
0 to 95% (indicates weight %, the same applies hereinafter), or further, metal powders such as aluminum, copper, tin, lead, etc., in the form of granules with a particle size of 10 μm or less or scales with a thickness of 2 μm or less, and alloy powders of each of the above metals. , or one or more of carbon, molybdenum disulfide, tungsten disulfide, and boron nitride powder added in an amount of up to 30% of the coating amount.
~95%, and the remainder is made into a suspension by kneading one or more organic resins such as organic solvent type acrylic, polyester, polybutadiene, melamine, phenol, epoxy, urethane, etc. be. This suspension is applied in a thickness of 2 to 20 μm onto the electrogalvanized steel sheet or an electroplated steel sheet whose main component is zinc by a method such as roll coating or knife coating, and then dried and baked. A composite coated steel sheet is manufactured by this process. The smaller the particle size of zinc, zinc alloy, aluminum, copper, tin, lead, and each alloy of the metals as the metal powder that is the main component of the composite material, the more dense the coating can be obtained. If the particle size is 10 μm or more, the coating becomes porous, which is not preferable.

また粉末の形状については、粒状粉末あるいは鱗片状粉
末があり、両者ともに使用できるが、鱗片状粉末を添加
する場合は、厚み2μm以下のものか好ましく、粒状粉
末に比して第一層の電気亜鉛めつきあるいは亜鉛を主成
分とする電気めつき鋼板との密着性は勿論、耐食性およ
び加工性が良好である。厚みが2μm以上になると、被
膜がポーラスとなつて好ましくない。次に、それぞれの
処理の効果と粉末の効果について説明する。
Regarding the shape of the powder, there are granular powder and scaly powder, both of which can be used, but when adding scaly powder, it is preferable to have a thickness of 2 μm or less. It not only has good adhesion to galvanized or electroplated steel sheets containing zinc as the main component, but also has good corrosion resistance and workability. If the thickness is 2 μm or more, the coating becomes porous, which is not preferable. Next, the effects of each treatment and the effect of the powder will be explained.

第一層となる電気亜鉛めつき、あるいは亜鉛を主成分と
する電気めつきを施すと、次に処理する複合材とベース
の冷延鋼板と直接に接触しないために、赤錆発生が著し
く抑制され、耐食性に効果的である。これは第一層とな
る亜鉛めつき量が17/d以下では赤錆発生に対する抑
制効果が激減することからも裏付けられる。また、亜鉛
粉末、あるいは亜鉛合金粉末は、複合材を被覆した場合
の防錆力に対して効果的であり、亜鉛本来の性質である
鉄に対する犠性的溶解により防錆効果を発揮するが、被
膜の均一性が問題となる。この被膜の均一性には、粉末
の形状、卦よび大きさが影響する。さらに追加して添加
される粉末は、その添加目的により異なるが、加工性を
さまたげないようにして耐食性を向上させることを主目
的に添加する場合は、アルミ;ウム、銅、すず、鉛、あ
るいは前記金属の七れぞれの合金粉末などが好ましく、
鱗片状粉末であれば伺好ましい。また本発明の複合被覆
鋼板の上にさらに種々の方法で塗装して使用することが
できるが、電着塗装をするためには炭素、銅などの粉末
を添加すると、耐食性}よび加工性を低下させることな
く、効果的である。また、加工性をさらに向上させるた
めには、炭素、二硫化モリブデン、二硫化タングステン
、窒化硼素などの粉末を添加すると効果的である。ここ
で、電気亜鉛めつきあるいは亜鉛を主成分とする電気め
つきの上層に被覆する、複合材の中に添加する全粉末の
量としては10〜95%が好ましく、10%以下になる
とその添加の効果が見られず、また95%以上になると
加工性、耐食性などの特性が著しく低下するので好まし
くない。
When the first layer of electrolytic galvanizing or zinc-based electroplating is applied, the formation of red rust is significantly suppressed because the composite material to be treated next does not come into direct contact with the base cold-rolled steel sheet. , effective for corrosion resistance. This is supported by the fact that when the amount of zinc plating in the first layer is less than 17/d, the effect of suppressing the occurrence of red rust is drastically reduced. In addition, zinc powder or zinc alloy powder is effective in preventing rust when coating a composite material, and exhibits a rust-preventing effect by sacrificial dissolution of iron, which is an inherent property of zinc. The uniformity of the coating is an issue. The uniformity of this coating is influenced by the shape, shape and size of the powder. The powder that is added will vary depending on the purpose of the addition, but if the main purpose is to improve corrosion resistance without interfering with workability, powders such as aluminum, copper, tin, lead, or Alloy powders of each of the seven metals are preferred,
A scaly powder is preferable. Furthermore, the composite coated steel sheet of the present invention can be coated using various methods, but adding powders such as carbon or copper for electrodeposition may reduce corrosion resistance and workability. Effective without making you feel uncomfortable. Furthermore, in order to further improve workability, it is effective to add powders of carbon, molybdenum disulfide, tungsten disulfide, boron nitride, and the like. Here, the amount of the total powder added to the composite material to be coated on the upper layer of electrogalvanizing or electroplating with zinc as the main component is preferably 10 to 95%, and if it is less than 10%, the addition is No effect is observed, and if it exceeds 95%, properties such as workability and corrosion resistance will deteriorate significantly, which is not preferable.

また粒径10μm以下の粒状あるいは厚み2μm以下の
鱗片状のアルミニウム、銅、すず、鉛の金属粉末、前記
金属のそれぞれの合金粉末、あるいは炭素、二硫化モリ
ブデン、二硫化タングステン、窒化硼素等の粉末は量と
して被覆層の3091)以下が好ましい。30%以上に
なつてもその添加効果は同じで、むしろ、第一層の電気
亜鉛めつき層あるいは亜鉛を主成分とする電気めつき層
との密着性、}よび、さらに上塗りされる場合は、上塗
り塗料との密着性を悪くし、加工法卦よび耐食性を低下
させるので好ましくない。
Also, metal powders of aluminum, copper, tin, and lead in the form of granules with a particle size of 10 μm or less or scales with a thickness of 2 μm or less, alloy powders of each of the above metals, or powders of carbon, molybdenum disulfide, tungsten disulfide, boron nitride, etc. The amount of the coating layer is preferably 3091) or less. Even if it exceeds 30%, the effect of its addition is the same; rather, it improves the adhesion to the first electrogalvanized layer or the electroplated layer whose main component is zinc, and if it is further coated. This is not preferable because it impairs the adhesion with the top coat and reduces the processing method and corrosion resistance.

また、電気亜鉛めつき層あるいは亜鉛を主成分とする電
気めつき層上に被覆される複合材中の有機樹脂中には、
無機系あるいは有機系の顔料を添加してもさしつかえな
い。
In addition, in the organic resin in the composite material coated on the electrogalvanized layer or the electroplated layer containing zinc as the main component,
Inorganic or organic pigments may be added.

焼付条件は、使用される樹脂により多少異なるが、板温
180〜230℃が好ましい。
Baking conditions vary somewhat depending on the resin used, but a plate temperature of 180 to 230°C is preferable.

以下実施例により詳細に説明する。This will be explained in detail below using examples.

実施例 1 板厚0.7wnの軟鋼板を、707/tの水酸化ナトリ
ウム溶液、浴温70℃で、10秒間の浸漬処理による脱
脂処理を行ない、水洗したのち、70f/tの硫酸、浴
温20℃で5秒間の浸漬による酸洗処理を行ない、水洗
したのち、めつき量が10t/dになるように亜鉛の電
気めつき処理を行ない次に示す複合材を被覆処理した。
Example 1 A mild steel plate with a thickness of 0.7wn was degreased by immersion in a 707/t sodium hydroxide solution at a bath temperature of 70°C for 10 seconds, rinsed with water, and then soaked in a 70f/t sulfuric acid bath. After pickling by dipping at 20° C. for 5 seconds and washing with water, zinc electroplating was performed to give a plating amount of 10 t/d, and the following composite material was coated.

懸濁液組成 ポリエステル樹脂 50部亜鉛粉末(
粒径3μm) 20部鱗片状アルミニウム粉
末(厚み1μm)3部顔料(クロム酸ストロンチウム)
3部被覆厚さ
10μm焼付条件 板温 230℃
得られた本発明の複合被覆鋼板の第二層被膜中の全粉末
が34%であり、ゴバン目エリクセン張り出し6ffi
?F!を行ない、粘着テープ剥離を行なつた結果、被膜
の剥離は見られず良好な加工密着性を示した。
Suspension composition Polyester resin 50 parts Zinc powder (
Particle size 3μm) 20 parts scaly aluminum powder (thickness 1μm) 3 parts pigment (strontium chromate)
3-part coating thickness
10μm baking conditions Board temperature 230℃
The total powder in the second layer coating of the obtained composite coated steel sheet of the present invention was 34%, and the Erichsen overhang was 6ffi.
? F! As a result of peeling off the adhesive tape, no peeling of the film was observed, indicating good processing adhesion.

また、JISZ237lによる塩水噴霧試験を行なつた
結果、平板部、クロスカツト部、}よびエリクセン6W
L張り出し部において、72時間を経過しても白錆の発
生が見られず、また500時間を経過しても赤錆の発生
が認められず、良好な耐食性を示した。一方、下地に電
気亜鉛めつきを施さないものに、複合材を前記の条件で
被膜したものは130時間で赤錆が発生した。また、溶
融亜鉛めつき鋼板(めつき量片面122V/イ)は36
時間で白錆が発生し、200時間で赤錆の発生が認めら
れた。実施例 2 実施例1と同様な軟鋼板に実施例1と同様の前処理を施
したのち、亜鉛を主成分とする金属の電気めつき(特公
昭49−19979号の実施例に基づく処理による)を
101/Rr?施し、次に、実施例1と同様な処理によ
り複合材を被覆した。
In addition, as a result of the salt spray test according to JIS Z237l, the flat plate part, cross cut part, and Erichsen 6W
In the L overhanging part, no white rust was observed even after 72 hours, and no red rust was observed even after 500 hours, indicating good corrosion resistance. On the other hand, when the composite material was coated under the above conditions without electrogalvanizing the base, red rust occurred in 130 hours. In addition, the hot-dip galvanized steel sheet (plating amount 122V/A on one side) is 36
White rust occurred after 200 hours, and red rust was observed after 200 hours. Example 2 A mild steel plate similar to that in Example 1 was subjected to the same pretreatment as in Example 1, and then subjected to electroplating of a metal containing zinc as the main component (by treatment based on the example of Japanese Patent Publication No. 49-19979). ) to 101/Rr? The composite was then coated by a similar process to Example 1.

得られた複合被覆鋼板を、ゴバン目エリクセン張り出し
6m、またデユポン衝撃加工(12.7TwLφ・1k
f、50cm)をした後、粘着テープ剥離を行なつた結
果、被膜の剥離は見られず、加工密着性は良好であつた
。また、JISZ237lによる塩水噴霧試験を行なつ
た結果、平板部、クロスカツト部、卦よびエリクセン6
?張り出し部において、105時間を経過しても白錆の
発生が見られず、また、700時間を経過しても赤錆の
発生は認められず、耐食性が良好であつた。実施例 3 実施例1と同様な軟鋼板に実施例1と同様の前処理を施
し、実施例2に示した、亜鉛を主成分とする電気めつき
を107/d施した後に次に示す複合材を被覆処理した
The obtained composite coated steel plate was subjected to a Goban Erichsen overhang of 6m and a Dupont impact processing (12.7TwLφ・1k
f, 50 cm) and then peeled off the adhesive tape. As a result, no peeling of the film was observed, and the processing adhesion was good. In addition, as a result of the salt spray test according to JIS Z237l, the flat plate part, cross cut part, hexagram, and Erichsen 6
? In the overhanging portion, no white rust was observed even after 105 hours, and no red rust was observed even after 700 hours, indicating good corrosion resistance. Example 3 A mild steel plate similar to that in Example 1 was subjected to the same pretreatment as in Example 1, and after electroplating with zinc as the main component at 107/d as shown in Example 2, the following composite was prepared. The material was coated.

懸濁液組成 エポキシ樹脂 50部亜鉛粉末(
粒径3μm) 100部鱗片状アルミニウム粉
末 2部炭素粉末(粒径1μm)
5部顔料(クロム酸ストロンチウム) 3
部被膜厚さ 7μm
焼付条件 板温 210℃得られた
複合被覆鋼板は、第二層被膜中の全粉末が66%であり
、ゴバン目エリクセン張り出し6」またデユポ7衝撃加
工(12.7Trmφ、1幻、50cm)をした後、粘
着テープ剥離を行なつた結果、被膜の剥離は見られず良
好な加工性を示した。
Suspension composition Epoxy resin 50 parts Zinc powder (
100 parts scaly aluminum powder 2 parts carbon powder (particle size 1 μm)
5 parts Pigment (strontium chromate) 3
Part coating thickness 7μm
Baking conditions: plate temperature: 210°C The resulting composite coated steel sheet has a total powder content of 66% in the second layer coating, and is subjected to Dupo 7 impact processing (12.7 Trmφ, 1 phantom, 50 cm) with an Erichsen overhang of 6''. After that, the adhesive tape was peeled off, and as a result, no peeling of the film was observed, indicating good workability.

また、JISZ237lによる塩水噴霧試験を行なつた
結果、平板部、クロスカツト部、}よびエリクセン6T
Vf1張り出し部において1000時間を経過しても赤
錆の発生が見られず、耐食性は良好であつた。また本発
明の複合被覆を施したのち、次に示す条件で電着塗装を
上塗り塗装として施した。
In addition, as a result of a salt spray test according to JIS Z237l, the flat plate part, cross cut part, and Erichsen 6T
No red rust was observed in the Vf1 overhanging portion even after 1000 hours, and the corrosion resistance was good. After applying the composite coating of the present invention, electrodeposition coating was applied as a top coat under the following conditions.

電着塗装条件浴組成 :ポリブタジエン電着塗料 15
%浴温度 :25℃処理電圧:200 処理時間:3分 得られた電着被膜の膜厚は25μmであり、ゴバン目エ
リクセン張り出し、お・よびデユポン衝撃加工後粘着テ
ープ剥離を行なつた結果、剥離は見られず、加工密着性
は良好であつた。
Electrodeposition coating conditions Bath composition: Polybutadiene electrodeposition paint 15
% Bath temperature: 25°C Processing voltage: 200 Processing time: 3 minutes The thickness of the electrodeposited film obtained was 25 μm, as a result of Erichsen overhang and Dupont impact processing followed by peeling off the adhesive tape. No peeling was observed, and the processing adhesion was good.

実施例 4 実施例1と同様な軟鋼板に実施例1と同様の前処理を施
し、実施例2に示した、亜鉛を主成分とする電気めつき
を107/d施した後に、次に示す複合材を被覆処理し
た。
Example 4 A mild steel plate similar to that in Example 1 was subjected to the same pretreatment as in Example 1, and after being electroplated with zinc as the main component at 107/d as shown in Example 2, the following was prepared. The composite material was coated.

懸濁液組成 アクリル樹脂 50部亜鉛粉末(
粒径3μm) 50部鱗片状亜鉛粉末(厚
み1μm) 100部二硫化モリブデン粉末(粒径
0.5μm)10部顔料(クロム酸ストロンチウム)
3部被膜厚さ 10
ttm焼付条件 板温 220℃得ら
れた複合被覆鋼板は第二層被膜中の全粉末が75%であ
りデユポ7・衝撃加工(12.7wm111蛇、50c
m)をした後、ち・よび絞り比2.0の深絞り加工を行
なつた後、粘着テープ剥離を行なつた結果、被膜の剥離
は認められず、良好な加工性を示した。
Suspension composition Acrylic resin 50 parts Zinc powder (
Particle size 3 μm) 50 parts scaly zinc powder (thickness 1 μm) 100 parts molybdenum disulfide powder (particle size 0.5 μm) 10 parts pigment (strontium chromate)
3 part coating thickness 10
Ttm baking conditions: plate temperature: 220°C The resulting composite coated steel sheet has a total powder content of 75% in the second layer coating, and is subjected to Dupo 7 impact processing (12.7wm 111mm, 50c).
After carrying out step m), deep drawing was carried out at a drawing ratio of 2.0, and the adhesive tape was peeled off. As a result, no peeling of the film was observed, indicating good workability.

また、JISZ237lによる塩水噴霧試験を行なつた
結果、デユポン衝撃加工部、}よび深絞り加工部に訃い
て、750時間を経過しても赤錆の発生は認められず、
耐食性は良好であつた。実施例 5 実施例1と同様な軟鋼板に実施例1と同様の前処理を施
し、前めつきとしてニツケルめつきを0.17/d行な
い、次に実施例2に示した、亜鉛を主成分とする電気め
つきを107/d施し、さらに実施例1と同様な処理に
より複合材を被覆した。
In addition, as a result of a salt spray test according to JIS Z237L, no red rust was observed on the Dupont impact processed parts, } and deep drawn parts even after 750 hours.
Corrosion resistance was good. Example 5 A mild steel plate similar to that in Example 1 was pretreated in the same manner as in Example 1, nickel plating was performed at 0.17/d as pre-plating, and then zinc-based coating as shown in Example 2 was applied. Electroplating as a component was performed at 107/d, and the composite material was further coated by the same treatment as in Example 1.

得られた複合被覆鋼板を、ゴバン目エリクセン張り出し
6wn1またデユポン衝撃加工(12.7Tmφ、1k
q、50cm)をした後、粘着テープ剥離を行なつた結
果、被膜の剥離は見られず、加工密着性は良好であつた
The obtained composite coated steel plate was subjected to Goban Erichsen overhang 6wn1 and Dupont impact processing (12.7Tmφ, 1k
q, 50 cm) and then peeled off the adhesive tape. As a result, no peeling of the film was observed, and the processing adhesion was good.

Claims (1)

【特許請求の範囲】 1 軟鋼板表面に、亜鉛または亜鉛を主成分とする、め
つき量1〜40g/m^2の金属めつき層、あるいは該
金属めつき層の下層に公知の極薄金属前めつき層をもつ
金属めつき層(以下両者をともに第一層と呼ぶ)と、そ
の上層に、膜厚2〜20μmの、金属粉末を主成分とす
る被覆層を有する複合被覆鋼板。 ただし、前記金属粉末を主成分とする被覆層は、A;粒
径10μm以下の粒状または厚み2μm以下の鱗片状の
、亜鉛粉末または亜鉛合金粉末の、単独あるいは混合物
。 B;粒径10μm以下の粒状または厚み2μm以下の鱗
片状の、アルミニウム、銅、すず、または鉛の金属粉末
、あるいはこれらの金属のそれぞれの合金粉末、あるい
は炭素、二硫化モリブデン、二硫化タングステン、また
は窒化硼素の粉末の、1種または2種以上の混合物。 C;アクリル系、ポリエステル系、ポリブタジエン系、
メラミン系、フェノール系、エポキシ系、またはウレタ
ン系の有機樹脂の1種または2種以上からなるバインダ
ー。 としたとき、Aを10〜95重量%とし、残部がCであ
る被覆層、あるいは、A+B(ただしBは被覆層の30
重量%以下)を10〜95重量%とし、残部がCである
被覆層。 2 極薄金属前めつき層が、3g/m^2以下の、すず
、クロム、ニッケル、または亜鉛のめつき層である特許
請求の範囲第1項記載の複合被覆鋼板。
[Claims] 1. A metal plating layer containing zinc or zinc as a main component with a plating amount of 1 to 40 g/m^2 on the surface of a mild steel sheet, or a known ultra-thin layer below the metal plating layer. A composite coated steel sheet having a metal plating layer having a metal pre-plating layer (hereinafter both are referred to as the first layer) and a coating layer having a film thickness of 2 to 20 μm and containing metal powder as a main component on top of the metal plating layer. However, the coating layer mainly composed of metal powder is A: zinc powder or zinc alloy powder, either singly or in a mixture, in the form of particles with a particle size of 10 μm or less or scales with a thickness of 2 μm or less. B; Metal powder of aluminum, copper, tin, or lead, or alloy powder of each of these metals, in the form of granules with a particle size of 10 μm or less or scales with a thickness of 2 μm or less, or carbon, molybdenum disulfide, tungsten disulfide, or a mixture of one or more boron nitride powders. C: Acrylic, polyester, polybutadiene,
A binder made of one or more of melamine-based, phenol-based, epoxy-based, or urethane-based organic resins. In this case, a coating layer in which A is 10 to 95% by weight and the remainder is C, or A+B (however, B is 30% by weight of the coating layer)
% by weight or less) is 10 to 95% by weight, and the remainder is C. 2. The composite coated steel sheet according to claim 1, wherein the ultra-thin metal pre-plated layer is a tin, chromium, nickel, or zinc plated layer of 3 g/m^2 or less.
JP1972978A 1978-02-24 1978-02-24 Composite coated steel plate Expired JPS598354B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1972978A JPS598354B2 (en) 1978-02-24 1978-02-24 Composite coated steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972978A JPS598354B2 (en) 1978-02-24 1978-02-24 Composite coated steel plate

Publications (2)

Publication Number Publication Date
JPS54112731A JPS54112731A (en) 1979-09-03
JPS598354B2 true JPS598354B2 (en) 1984-02-24

Family

ID=12007394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1972978A Expired JPS598354B2 (en) 1978-02-24 1978-02-24 Composite coated steel plate

Country Status (1)

Country Link
JP (1) JPS598354B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011065514A1 (en) * 2009-11-26 2011-06-03 Jfeスチール株式会社 Galvanized steel sheet

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540637A (en) * 1980-12-29 1985-09-10 Baltimore Aircoil Company, Inc. Process for the application of organic materials to galvanized metal
AU551639B2 (en) * 1981-05-19 1986-05-08 Nippon Steel Corporation Weldable zn-alloy paint-coated steel sheets
JPH0765231B2 (en) * 1985-06-24 1995-07-12 住友金属工業株式会社 Steel plate with laminated plating for fuel tank
JPH0765211B2 (en) * 1985-06-24 1995-07-12 住友金属工業株式会社 Automotive bag closing structural member
US4835066A (en) * 1986-01-25 1989-05-30 Nisshin Steel Co., Ltd. Plated steel sheet having excellent coating performance
JPS62225341A (en) * 1986-03-27 1987-10-03 住友金属工業株式会社 Coated steel plate for bonding
US4968391A (en) * 1988-01-29 1990-11-06 Nippon Steel Corporation Process for the preparation of a black surface-treated steel sheet
JP5750852B2 (en) 2010-09-29 2015-07-22 Jfeスチール株式会社 Cold rolled steel sheet
JP5838542B2 (en) 2010-09-29 2016-01-06 Jfeスチール株式会社 Cold rolled steel sheet manufacturing method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011065514A1 (en) * 2009-11-26 2011-06-03 Jfeスチール株式会社 Galvanized steel sheet
JP2011131586A (en) * 2009-11-26 2011-07-07 Jfe Steel Corp Galvanized steel sheet
CN102630199A (en) * 2009-11-26 2012-08-08 杰富意钢铁株式会社 Galvanized steel sheet
TWI457464B (en) * 2009-11-26 2014-10-21 Jfe Steel Corp Zinc-based alloy coated steel sheet
EP2505351A4 (en) * 2009-11-26 2016-01-13 Jfe Steel Corp Galvanized steel sheet

Also Published As

Publication number Publication date
JPS54112731A (en) 1979-09-03

Similar Documents

Publication Publication Date Title
US4407900A (en) Electroplated corrosion resistant steels and method for manufacturing same
JPS598354B2 (en) Composite coated steel plate
US3816082A (en) Method of improving the corrosion resistance of zinc coated ferrous metal substrates and the corrosion resistant substrates thus produced
US3838024A (en) Method of improving the corrosion resistance of substrates
KR890001109B1 (en) Corrosion-resistant steel strip having zn-fe-p alloy electroplated thereon
JPS6256959B2 (en)
JPS6138276B2 (en)
JPS6160915B2 (en)
JPS60200996A (en) Blackened rustproof steel sheet and its manufacture
JPS5858294A (en) Surface treated steel products with superior corrosion resistance and adhesion resistant to water after coating
JPS6233314B2 (en)
JPS6082691A (en) Multilayer plated steel sheet
JPS5852494A (en) Iron-zinc alloy plated steel material
JPS61207597A (en) Alloyed hot dip galvanized steel sheet having superior workability
JPH01108396A (en) Production of galvannealed steel sheet for coating by cationic electrodeposition
JPS58204193A (en) Surface treated steel plate
JPS5834192A (en) Surface treatment steel plate which is excellent in corrosion resistance and water adherence resistance after painting
JPS60110861A (en) Steel sheet coated with al or al-zn alloy by hot dipping and provided with superior suitability to chemical conversion treatment
JPH0142359B2 (en)
JPH0754193A (en) Production of high corrosion resistant electrogalvanized steel sheet excellent in chemical convertibility
JPS6134520B2 (en)
JPH0340116B2 (en)
JPS60131977A (en) Surface treated steel sheet having superior suitability to chemical conversion treatment
JPS58144496A (en) Alloyed zinc plated steel plate excellent in paintability
JPH02104695A (en) Black surface-treated steel material and production thereof