JPH01108396A - Production of galvannealed steel sheet for coating by cationic electrodeposition - Google Patents
Production of galvannealed steel sheet for coating by cationic electrodepositionInfo
- Publication number
- JPH01108396A JPH01108396A JP26595387A JP26595387A JPH01108396A JP H01108396 A JPH01108396 A JP H01108396A JP 26595387 A JP26595387 A JP 26595387A JP 26595387 A JP26595387 A JP 26595387A JP H01108396 A JPH01108396 A JP H01108396A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- coating
- cationic electrodeposition
- electroplating
- galvanized steel
- 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.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 20
- 239000011248 coating agent Substances 0.000 title claims abstract description 18
- 125000002091 cationic group Chemical group 0.000 title claims abstract description 15
- 238000004070 electrodeposition Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910000831 Steel Inorganic materials 0.000 title abstract description 9
- 239000010959 steel Substances 0.000 title abstract description 9
- 238000007747 plating Methods 0.000 claims abstract description 20
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 19
- 239000008397 galvanized steel Substances 0.000 claims abstract description 19
- 238000009713 electroplating Methods 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims description 14
- 239000002344 surface layer Substances 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 238000007654 immersion Methods 0.000 abstract description 4
- 238000005554 pickling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- 229910001297 Zn alloy Inorganic materials 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005275 alloying Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 238000005246 galvanizing Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 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 description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 description 2
- 229910017086 Fe-M Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、カチオン電着塗装用ガルバニール鋼板の製法
、特に自動車車体を構成するカチオン電着塗装用ガルバ
ニール鋼板の製法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a galvanized steel sheet for cationic electrodeposition coating, and particularly to a method for manufacturing a galvanized steel sheet for cationic electrodeposition coating that constitutes an automobile body.
（従来の技術）
従来より、自動車車体の防錆性向上のため、塗膜性能の
よいカチオン電着塗料がブライマーとして採用されてい
る。また、近年では外面諸対策が求められ、車体外面に
も各種防錆鋼板が適用されてきている。しかし、カチオ
ン電着塗装時に急激に高電圧が表面に印加されるとクレ
ータと呼ばれる塗膜欠陥が発生することが多い、そこで
、かかろクレータの発生を防止すべ（上層に鉄濃度の高
いＦｅ −Ｚｎ合金を電気めっきにより形成させる２層
めっき鋼板が開発されている０例えば、特公昭５８−１
５５５４号参照、また、特開昭６１−２５２３９７号に
おいて、Ｐ含有量０．０００３〜１５重量％のＦｅ−Ｐ
合金めっき層を上層に３ ｇｅｍ”以上施すことが提案
されている。(Prior Art) Cationic electrodeposition paints with good film performance have been used as brimers to improve the rust prevention properties of automobile bodies. In addition, in recent years, various measures for the exterior have been required, and various rust-proof steel plates have been applied to the exterior of the vehicle body. However, when a high voltage is suddenly applied to the surface during cationic electrodeposition coating, coating film defects called craters often occur. A two-layer plated steel sheet in which an alloy is formed by electroplating has been developed.
5554, and in JP-A No. 61-252397, Fe-P with a P content of 0.0003 to 15% by weight
It has been proposed to apply an alloy plating layer of 3 gem" or more on the upper layer.
しかしながら、これらの方法をガルバニール鋼板に適用
した場合、クレータ防止には多大の目付量を要する。こ
れは表面揄粗度が大きいことによる。However, when these methods are applied to galvanized steel sheets, a large amount of basis weight is required to prevent craters. This is due to the large surface roughness.
その他、かかるクレータ発生防止には、特開昭６１−２
９１９５７号には、表層を電解して表面から０．２〜３
．０μ−の′深さまで脱亜鉛を行って表層濃度を５５〜
９２％とする方法が提案されているが、厚膜化は避けら
れない。In addition, to prevent the occurrence of such craters, JP-A No. 61-2
In No. 91957, the surface layer is electrolyzed to remove 0.2 to 3
．． Dezincing is carried out to a depth of 0 μ- to reduce the surface concentration to 55 ~
Although a method has been proposed in which the thickness is increased to 92%, thickening of the film is unavoidable.
したがって、少ない目付量にて表面を被覆しクレータ発
生防止および塗膜密着性に優れた化成被膜を析出させる
新規な上層めっき法の開発が望まれている。Therefore, it is desired to develop a new upper layer plating method that coats the surface with a small basis weight and deposits a chemical conversion film that prevents cratering and has excellent coating film adhesion.
（発明が解決しようとする問題点）
かくして、本発明の目的は、少ない目付量にて表面を被
覆しクレータ発生防止および耐食性に優れた化成被膜が
析出する新規な上層めっき法を提供することである。(Problems to be Solved by the Invention) Thus, an object of the present invention is to provide a new upper layer plating method that coats the surface with a small basis weight and deposits a chemical conversion film that is excellent in preventing cratering and corrosion resistance. be.
本発明者らは、かかる目的を達成すべく種々検討を重ね
たところ、ガルバニール鋼板の製造工程において、溶融
亜鉛めっき層の合金化処理後、Ｆｅ−Ｚｎ合金の電気め
っき前に合金化溶融亜鉛めっき層の表面層を一部溶解さ
せることにより、少ない目付量にて表面を被覆しても、
カチオン電着塗装性および耐食性に優れたガルバニール
鋼板を製造できることを見出し、本発明を完成した。The present inventors have conducted various studies to achieve this objective, and have found that in the manufacturing process of galvanized steel sheets, alloying hot-dip galvanizing is performed after alloying the hot-dip galvanized layer and before electroplating the Fe-Zn alloy. By partially dissolving the surface layer of the layer, even if the surface is coated with a small basis weight,
The present invention was completed based on the discovery that it is possible to produce a galvanized steel sheet with excellent cationic electrodeposition coating properties and corrosion resistance.
（問題点を解決するための手段）
ここに、本発明の要旨とするところは、合金化溶融亜鉛
めっき鋼板の少なくとも一方の表面層を一部溶解した後
、その上にＦｅ６０重量％以上含有するめっき層を電気
めっきにより施すことを特徴とするカチオン電着塗装用
ガルバニール鋼板の製法である。(Means for Solving the Problems) The gist of the present invention is to partially melt at least one surface layer of an alloyed hot-dip galvanized steel sheet, and then add 60% by weight or more of Fe thereon. This is a method for producing a galvanized steel sheet for cationic electrodeposition coating, characterized in that a plating layer is applied by electroplating.
（作用）
ここで、本発明にかかる方法は、その具体的構成を示せ
ば、（溶融亜鉛めっき）−（合金化）−（表面層の一部
溶解） −＝（Ｆｅ高濃度合金層の電気めっき）の各処
理工程から成る。ここに、合金化溶融亜鉛めっき鋼板の
製造工程を示す（溶融亜鉛めっき）＝（合金化）の各処
理工程はすでに当業者に周知であり、またそれにより得
られた合金化溶融亜鉛めっき鋼板もガルバニール鋼板と
してよく知られており、また、本発明にあってガルバニ
ール鋼板であればその製法は特に制限されないため、こ
れ以上の言及は省略する。(Function) Here, the method according to the present invention has the following specific configuration: (Hot dip galvanizing) - (Alloying) - (Partial dissolution of surface layer) - = (Electricity of Fe high concentration alloy layer) It consists of each processing step (plating). Here, the manufacturing process of an alloyed hot-dip galvanized steel sheet is shown. Each treatment process of (hot-dip galvanizing) = (alloying) is already well known to those skilled in the art, and the alloyed hot-dip galvanized steel sheet obtained thereby is also known. It is well known as a galvanized steel sheet, and in the present invention, the manufacturing method is not particularly limited as long as it is a galvanized steel sheet, so further description thereof will be omitted.
ガルバニニル鋼板の表面層の一部の溶解は、例えば塩酸
、硫酸浴などの酸洗液に好ましくは０．５〜５秒浸漬し
、場合によっては電解条件下で浸漬することによって行
う。また、そのような溶解液は電気めっき液に同じであ
ってもよく、その場合には電気めっきに先立って無通電
状態であるいは陽極処°理を行いながらその電気めっき
液に浸漬するだけでもよい、いずれにしても表面層の一
部溶解という同じ作用効果が得られるものであれば、特
に制限はなく、いずれの方法によって表面層の一部溶解
を行ってもよい。Part of the surface layer of the galvaninyl steel sheet is dissolved, for example, by immersing it in a pickling solution such as a hydrochloric acid or sulfuric acid bath for preferably 0.5 to 5 seconds, and optionally under electrolytic conditions. Further, such a solution may be the same as the electroplating solution, and in that case, it is sufficient to simply immerse the material in the electroplating solution in a non-energized state or while performing anodization prior to electroplating. In any case, the surface layer may be partially dissolved by any method as long as the same effect of partially dissolving the surface layer can be obtained.
このような浸漬処理により合金化溶融亜鉛めっき層の表
面層の一部が溶解され、その上に施される電気めっきの
被覆率が著しく増大し、従来の認識に反して、極薄目付
量でも高いＰ値を得ることが出来るのである。ここに、
Ｐ値は、後述するホーバイトに対するホスヒライト比率
を「％」で示す値であって、塗装後耐食性良否の指標と
なるものであり、Ｐ値が大であれば塗装後耐食性は良好
となる。This immersion treatment dissolves a part of the surface layer of the alloyed hot-dip galvanized layer, significantly increasing the coverage of the electroplating applied thereon, and contrary to conventional wisdom, it can be applied even at extremely thin coating weights. A high P value can be obtained. Here,
The P value is a value indicating the ratio of phoshilite to hovite (described later) in "%", and serves as an index of the quality of corrosion resistance after painting, and the higher the P value, the better the corrosion resistance after painting.
次いで、Ｆｅ濃度６０％以上のめっきを行う０代表例と
しては、Ｆｅ −Ｚｎ合金電気めっきを行うが、その他
、Ｆｅｔ１度６０％以上が確保される限り、Ｆｅ −Ｍ
ｎ、Ｆｅ−Ｎｉ、、Ｆｅ −Ｐ、 Ｐｅ −Ｂ系の合金
電気めっきを行ってもよい、このような合金電気めっき
それ自体はすでに当業者に周知であって、本発明にあっ
ても特定の操業条件に制限されるものではない。Next, as a typical example of plating with an Fe concentration of 60% or more, Fe-Zn alloy electroplating is performed, but as long as an Fe concentration of 60% or more is ensured, Fe-M
n, Fe-Ni, Fe-P, Pe-B based alloy electroplating may be performed. Such alloy electroplating itself is already well known to those skilled in the art, and even in the present invention, specific operating conditions.
このようにして得たカチオン電着塗装用鋼板は、一般に
はリン酸塩化成処理そしてカチオン電着塗装を行って自
動車車体用として使用される。このように引き続き行う
リン酸塩化成処理、そしてカチオン電着塗装についても
すでに公知の操作を操り返せばよく、特定のものに制限
されるものではない。The thus obtained steel sheet for cationic electrodeposition coating is generally subjected to phosphate chemical conversion treatment and cationic electrodeposition coating before being used for automobile bodies. The subsequent phosphate chemical treatment and cationic electrodeposition coating can be carried out by repeating known operations, and are not limited to specific methods.
次に、具体的例によって本発明の作用効果をさらに詳述
する。なお、本明細書において、「％」は特にことわり
がないかぎり、「重量％」である。Next, the effects of the present invention will be explained in more detail using specific examples. In this specification, "%" means "% by weight" unless otherwise specified.
上役■
常法により製造したガルバニール鋼板に、表面層の溶解
を何ら行うことなく、従来法に従って、第１表に示す条
件にてＦｅ −Ｚｎ合金めっきを施こし、化成処理性と
耐クレータ性を調査した。Superior ■ Fe-Zn alloy plating was applied to a galvanized steel sheet manufactured by a conventional method under the conditions shown in Table 1 according to the conventional method without dissolving the surface layer to improve chemical conversion treatment properties and crater resistance. investigated.
上層であるＦｅ−Ｚｎ合金めっき層のＦｅ％はめつき液
中のＦｅ５０． ・７Ｈ８０濃度で、目付量は通電時
間によってそれぞれ調整した。The Fe% of the upper Fe-Zn alloy plating layer is Fe50.・At 7H80 concentration, the basis weight was adjusted depending on the current application time.
玉１人
Ｆｅ５Ｏａ ・７Ｈｚ０２５０〜５００ｇ／ ｊ
ｐＨ２，０ＺｎＳＯａ ・ＩＨｔＯ９ｇ／ ｊ
浴温度５０℃Ｎａ！ＳＯａ ７５ ｇ／
ｌ 電流密度４０Ａ／ｄ■次いで、通常の自動車
用リン酸亜鉛処理を行い、ＺｎｔＦｅ（Ｐｏ４） １４
ＨｘＯ（ホスホヒライト）とＺｒ＋ｓ（ＰＯａ）ｇ・４
Ｈ２Ｏ（ホーバイト）とのＸＨＩＡ回折強度比率でＰ値
を求め化成処理性の指標とした。1 ball Fe5Oa ・7Hz0250~500g/j
pH2,0ZnSOa ・IHtO9g/j
Bath temperature 50℃Na! SOa 75 g/
l Current density: 40 A/d ■Next, ordinary automotive zinc phosphate treatment is performed, and ZntFe(Po4) 14
HxO (phosphohyrite) and Zr+s(POa)g・4
The P value was determined from the XHIA diffraction intensity ratio with H2O (horbite) and was used as an index of chemical conversion treatment properties.
耐クレータ性は、慣用の自動車用カチオン電着塗料を用
いて３００Ｖ Ｘ ２分の条件で通常の電着塗装を行い
、焼付後の表面欠陥の発生状況で評価した。Crater resistance was evaluated based on the occurrence of surface defects after baking, using a conventional cationic electrocoating paint for automobiles and performing normal electrocoating under the conditions of 300V x 2 minutes.
第１図にはＰ値で示す化成処理性を上層めっきの目付量
に対しグラフで示す、Ｆｅ−Ｚｎ合金めっきのＦａ％の
Ｐ値に対する影響は小さく、目付量の影響が大きい、目
付量がＩｇ／ｇｅ”ではＰ値はゼロで、目付量１ｇ７ｍ
”でもＰ値は８０％以下と低い。Figure 1 shows the chemical conversion treatment property expressed as P value in relation to the basis weight of the upper layer plating. Ig/ge”, the P value is zero, and the basis weight is 1g7m
``However, the P value is low at less than 80%.
また耐クレータ性は第２表にまとめて示すように、若干
Ｐ値とは異なる傾向であるが、高Ｆｅ％で厚目付量でな
いとクレータが発生することが分かる。In addition, as summarized in Table 2, the crater resistance tends to be slightly different from the P value, but it can be seen that craters occur unless the Fe% is high and the coating is thick.
以上から、従来法によれば、薄目付量にては化成処理性
および耐クレータ性を改善することができないことが分
かる。From the above, it can be seen that according to the conventional method, chemical conversion treatment properties and crater resistance cannot be improved with a low coating weight.
大皇曇上
室温の１０％塩酸浴に慣用のガルバニール鋼板を浸漬し
て表面層を一部溶解して、第１表と同一条件で８０％Ｆ
ｅ −Ｚｎ合金めっきを３ ｇ／ｍ”施し、前述の比較
例の手順にしたがって、Ｐ値と耐クレータ性を評価した
。結果を第２図にグラフにまとめて示す。A conventional galvanized steel plate was immersed in a 10% hydrochloric acid bath at room temperature to partially dissolve the surface layer, and the temperature was increased to 80% F under the same conditions as in Table 1.
3 g/m'' of e-Zn alloy plating was applied, and the P value and crater resistance were evaluated according to the procedure of the comparative example described above. The results are summarized in a graph in FIG.
第２図に示す結果からも分かるように、本発明によれば
、上記塩酸浴に０６５秒浸漬するだけで上層めっきの目
付１３ｇ／＊”でＰ値が１００％となり、しかもクレー
タの発生がみられなくなる。As can be seen from the results shown in Fig. 2, according to the present invention, the P value becomes 100% when the upper layer plating has a basis weight of 13 g/*'' by just immersing it in the hydrochloric acid bath for 0.65 seconds, and no craters are observed. I won't be able to do it.
かかる効果は、塩酸浸漬のみならず、陽極電解でも同じ
であり、また硫酸など他の酸を用いても同様の効果が発
揮される。電気めっきに先立って電気を通ぜずに、めっ
き液によって表面溶解を行っても同様の効果が見られた
。This effect is the same not only with hydrochloric acid immersion but also with anodic electrolysis, and the same effect can be achieved even when other acids such as sulfuric acid are used. A similar effect was observed even when surface dissolution was performed using a plating solution without passing electricity prior to electroplating.
Ｆｅ −Ｚｎ合金めっき前の表面溶解が塗装後耐食性な
らびに耐クレータ性向上に寄与する機構については明確
ではないが、以下のごとく推定される。Although the mechanism by which surface dissolution before Fe--Zn alloy plating contributes to improved post-painting corrosion resistance and crater resistance is not clear, it is presumed as follows.
つまり、ガルバニール鋼板の表面からの亜鉛の優先溶解
により部分的に表面層のＰｅ濃度が高くなる部分ができ
、薄目付量でもＦｅ −Ｚｎめっきの表面被覆率を上げ
ることとなり、それらの特性が向上すると考えられる。In other words, preferential dissolution of zinc from the surface of the galvanized steel sheet creates areas where the Pe concentration in the surface layer is high, increasing the surface coverage of Fe-Zn plating even at a low coating weight, and improving its properties. It is thought that then.
天皇■」
慣用のガルバニール鋼板を５０℃の５％硫酸浴に１秒間
浸漬したのち、各種めっき条件にてＦｅ −Ｚｎ電気め
っきを施し、次いで慣用の自動車用リン酸亜鉛処理を行
ってから同じく慣用の自動車用カチオン電ｔｒ塗装処理
を行い、耐クレータ性および化成処理性を評価した。After immersing a conventional galvanized steel sheet in a 5% sulfuric acid bath at 50℃ for 1 second, it was subjected to Fe-Zn electroplating under various plating conditions, and then subjected to the conventional zinc phosphate treatment for automobiles, and then subjected to the same conventional method. A cationic electrolytic paint treatment for automobiles was performed, and the crater resistance and chemical conversion treatment properties were evaluated.
結果を第３表にまとめて示す０本発明にかかる方法によ
れば、０．５ｇ／閣”以上の薄目付量にて良好な塗装性
が得られることは明らかである。The results are summarized in Table 3. According to the method according to the present invention, it is clear that good paintability can be obtained at a thin basis weight of 0.5 g/cm or more.
Ｏ：なし、Δ：１〜５、×；６以上
几蔀」」１）
以上のように、本発明によりガルバニール鋼板の表面を
わずかに溶解したのち６０％以上とＦｅｆＱ度の高いＦ
ｅ −Ｚｎ合金めっきを０．５ｇ／ｓ”以上施すことに
より良好な耐クレータ性および化成性を有するようにな
る。O: none, Δ: 1 to 5,
By applying e-Zn alloy plating at a rate of 0.5 g/s or more, good crater resistance and chemical formability can be obtained.
（発明の効果）
以上説明したように、本発明によれば、合金電気めっき
に先立って単に表面層を溶解するという簡便な操作でも
って、従来問題であって厚目付を避けて薄目付でもって
十分に耐クレータ性および化成処理性を確保できるので
あり、実用上の観点からその意義は大きい。(Effects of the Invention) As explained above, according to the present invention, by simply dissolving the surface layer prior to alloy electroplating, it is possible to avoid the conventional problem of thick coatings and achieve thin coatings. Sufficient crater resistance and chemical conversion treatment properties can be ensured, and this is of great significance from a practical standpoint.
第１図は、比較例におけるＰ値で示す化成処理性のグラ
フ；および
第２図は、本発明におけるクレータの発生およびＰ値を
浸漬時間に対して示すグラフである。FIG. 1 is a graph showing the chemical conversion treatment property in terms of P value in a comparative example; and FIG. 2 is a graph showing crater generation and P value in the present invention versus immersion time.
Claims (1)
一部溶解した後、その上にＦｅ６０重量％以上含有する
めっき層を電気めっきにより施すことを特徴とするカチ
オン電着塗装用ガルバニール鋼板の製法。A method for producing a galvanized steel sheet for cationic electrodeposition coating, which comprises partially melting at least one surface layer of an alloyed hot-dip galvanized steel sheet, and then applying a plating layer containing 60% by weight or more of Fe thereon by electroplating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62265953A JPH0631475B2 (en) | 1987-10-21 | 1987-10-21 | Manufacturing method of galvannealed steel sheet for cationic electrodeposition coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62265953A JPH0631475B2 (en) | 1987-10-21 | 1987-10-21 | Manufacturing method of galvannealed steel sheet for cationic electrodeposition coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01108396A true JPH01108396A (en) | 1989-04-25 |
| JPH0631475B2 JPH0631475B2 (en) | 1994-04-27 |
Family
ID=17424357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62265953A Expired - Lifetime JPH0631475B2 (en) | 1987-10-21 | 1987-10-21 | Manufacturing method of galvannealed steel sheet for cationic electrodeposition coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0631475B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02243780A (en) * | 1989-03-16 | 1990-09-27 | Kawasaki Steel Corp | Production of alloyed hot dip galvanized steel sheet having resistance to powdering property |
| JPH03173796A (en) * | 1989-12-01 | 1991-07-29 | Kawasaki Steel Corp | Production of molten zinc double layer plated steel sheet having superior uniformity of upper iron-based electroplating |
| JPH04236752A (en) * | 1991-01-14 | 1992-08-25 | Nkk Corp | Production of iron-zinc alloy plated steel sheet having plural iron-zinc alloy plating layers having excellent electrodeposition coating suitability |
| AU628169B2 (en) * | 1989-05-08 | 1992-09-10 | Sumitomo Metal Industries Ltd. | Electroplating of hot-galvanized steel sheet and continuous plating line therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57114695A (en) * | 1980-12-01 | 1982-07-16 | Nisshin Steel Co Ltd | Production of zinc plated steeel plate of superior blackening resistance and intergranular corrosion resistance |
| JPS5815554A (en) * | 1981-07-21 | 1983-01-28 | Toray Ind Inc | Resin composition |
| US4510209A (en) * | 1980-09-12 | 1985-04-09 | Nippon Steel Corporation | Two layer-coated steel materials and process for producing the same |
-
1987
- 1987-10-21 JP JP62265953A patent/JPH0631475B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510209A (en) * | 1980-09-12 | 1985-04-09 | Nippon Steel Corporation | Two layer-coated steel materials and process for producing the same |
| JPS57114695A (en) * | 1980-12-01 | 1982-07-16 | Nisshin Steel Co Ltd | Production of zinc plated steeel plate of superior blackening resistance and intergranular corrosion resistance |
| JPS5815554A (en) * | 1981-07-21 | 1983-01-28 | Toray Ind Inc | Resin composition |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02243780A (en) * | 1989-03-16 | 1990-09-27 | Kawasaki Steel Corp | Production of alloyed hot dip galvanized steel sheet having resistance to powdering property |
| AU628169B2 (en) * | 1989-05-08 | 1992-09-10 | Sumitomo Metal Industries Ltd. | Electroplating of hot-galvanized steel sheet and continuous plating line therefor |
| US5236574A (en) * | 1989-05-08 | 1993-08-17 | Sumitomo Metal Industries, Ltd. | Electroplating of hot-galvanized steel sheet and continuous plating line therefor |
| JPH03173796A (en) * | 1989-12-01 | 1991-07-29 | Kawasaki Steel Corp | Production of molten zinc double layer plated steel sheet having superior uniformity of upper iron-based electroplating |
| JPH04236752A (en) * | 1991-01-14 | 1992-08-25 | Nkk Corp | Production of iron-zinc alloy plated steel sheet having plural iron-zinc alloy plating layers having excellent electrodeposition coating suitability |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0631475B2 (en) | 1994-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4845951B2 (en) | Manufacturing method of surface-treated steel sheet, surface-treated steel sheet, and resin-coated surface-treated steel sheet obtained by coating surface-treated steel sheet with organic resin | |
| JPH0488196A (en) | Galvanized steel sheet excellent in press workability and chemical conversion treating property | |
| JP4615807B2 (en) | Manufacturing method of surface-treated steel sheet, surface-treated steel sheet, and resin-coated surface-treated steel sheet | |
| JP2013151734A (en) | Electrogalvanized steel sheet for high image clarity coating substrate excellent in corrosion resistance after coating and enamel hair resistance, and method for producing the same | |
| JPS598354B2 (en) | Composite coated steel plate | |
| JPH01108396A (en) | Production of galvannealed steel sheet for coating by cationic electrodeposition | |
| JP4179527B2 (en) | Manufacturing method of surface-treated steel sheet, surface-treated steel sheet, and resin-coated surface-treated steel sheet obtained by coating surface-treated steel sheet with organic resin | |
| JPH0422992B2 (en) | ||
| JPS5852494A (en) | Iron-zinc alloy plated steel material | |
| JPH0359996B2 (en) | ||
| JPS62180081A (en) | Colored galvanized steel sheet | |
| JPH04333576A (en) | Production of surface-treated steel sheet having excellent adhesive property | |
| JPH02101200A (en) | Cold-rolled steel sheet having excellent corrosion resistance and property to be phosphated | |
| JPS59162294A (en) | Steel sheet having two-layered zn plating provided with superior workability and its manufacture | |
| JPH0533188A (en) | Surface treated steel for vessel excellent in rust resistance and external appearance characteristic | |
| JPH042758A (en) | Production of hot-dip zinc alloy coated steel sheet excellent in press formability and corrosion resistance after coating | |
| JPH03249182A (en) | Galvanized steel sheet having excellent press formability and chemical convertibility | |
| JPS61119694A (en) | Production of electroplated steel plate | |
| JPH0340116B2 (en) | ||
| JPH01255685A (en) | Production of zn-fe double-plated steel sheet | |
| JPH0499880A (en) | Zinc plated steel sheet having superior press formability and chemical convertibility | |
| JPH0390592A (en) | Production of surface-treated steel sheet for di can | |
| JPH02104695A (en) | Black surface-treated steel material and production thereof | |
| JPH02282488A (en) | Double-ply plated steel sheet | |
| JPS60131977A (en) | Surface treated steel sheet having superior suitability to chemical conversion treatment |