JPS63213682A - Surface treatment of galvanized steel sheet - Google Patents
Surface treatment of galvanized steel sheetInfo
- Publication number
- JPS63213682A JPS63213682A JP4720987A JP4720987A JPS63213682A JP S63213682 A JPS63213682 A JP S63213682A JP 4720987 A JP4720987 A JP 4720987A JP 4720987 A JP4720987 A JP 4720987A JP S63213682 A JPS63213682 A JP S63213682A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- galvanized steel
- treatment
- energy
- free energy
- 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
- 229910001335 Galvanized steel Inorganic materials 0.000 title claims abstract description 13
- 239000008397 galvanized steel Substances 0.000 title claims abstract description 13
- 238000004381 surface treatment Methods 0.000 title claims description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 6
- 239000002738 chelating agent Substances 0.000 claims abstract description 5
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims abstract description 4
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims abstract 4
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims abstract 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract 2
- 235000012208 gluconic acid Nutrition 0.000 claims abstract 2
- 239000000174 gluconic acid Substances 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 24
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims 1
- 159000000000 sodium salts Chemical class 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 7
- 239000003513 alkali Substances 0.000 abstract 3
- 238000004532 chromating Methods 0.000 abstract 2
- 239000007787 solid Substances 0.000 description 7
- 239000010410 layer Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 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
- 238000010306 acid treatment Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000007962 solid dispersion Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Chemical Treatment Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、亜鉛めっき鋼板の塗装前処理として施す表面
処理方法の改善に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement in a surface treatment method applied as a pre-painting treatment to galvanized steel sheets.
（従来技術）
溶融亜鉛めっき鋼板や電気亜鉛めっき鋼板などに塗装を
施す場合、前処理として化成処理を施す。(Prior art) When painting hot-dip galvanized steel sheets, electrogalvanized steel sheets, etc., chemical conversion treatment is performed as a pretreatment.
この前処理には、従来、リン酸塩処理、クロメート処理
などが一般的に使用されているが、クロメート処理は、
反応型処理液のものでは耐食性、塗膜密着性を向上させ
るのに限界があるため、これらの特性を特に必要とする
用途に対しては、塗布型処理液のものが使用されている
。Conventionally, phosphate treatment, chromate treatment, etc. are commonly used for this pretreatment, but chromate treatment
Since reactive treatment liquids have limitations in improving corrosion resistance and coating adhesion, coating type treatment liquids are used for applications that particularly require these properties.
従来この塗布型処理液により着色亜鉛鉄板製造の際など
にクロメート処理を施す場合は、表面調整などを行わず
、直接鋼板に施していた。Conventionally, when applying chromate treatment using this coating-type treatment liquid during the production of colored galvanized iron sheets, etc., the treatment was applied directly to the steel sheet without surface conditioning.
（発明が解決しようとする問題、α）
しかしながら、かかる方法では、塗膜密着性が十分でな
く、折り曲げ加工などを行うと、若干塗膜が剥離すると
いう欠点があった。(Problem to be Solved by the Invention, α) However, this method has the disadvantage that the coating film adhesion is not sufficient and the coating film peels off slightly when bending or the like is performed.
一般に、塗布型クロメート処理により塗膜密着性を改善
するには、処理液組成を改善すればよいのであるが、亜
鉛めっき鋼板は、めっき浴組成やめっき方法により表面
特性が異なるため、めっき鋼板のＳＶｔ毎に組成の異な
ったものを用意しなければならない。このため、他の方
法で塗膜密着性を改善する必要があった。Generally, in order to improve paint film adhesion through paint-on chromate treatment, it is sufficient to improve the composition of the treatment solution, but since the surface properties of galvanized steel sheets vary depending on the plating bath composition and plating method, Different compositions must be prepared for each SVt. Therefore, it was necessary to improve the coating film adhesion by other methods.
（問題点を解決するための手段）
本発明は、亜鉛めっき銅板を塗布型クロメート処理を施
す前にアルカリ系処理液で処理して、鋼板の表面自由エ
ネルギーを４０ ｅｒｇ／ａｍ２以上、そのうちの極性
力成分エネルギーを２０ ｅｒｇ／ｃ＋ｍ２以上にする
ことにより、塗膜密着性を向上させた。(Means for Solving the Problems) The present invention treats a galvanized copper plate with an alkaline treatment liquid before applying a coating type chromate treatment to increase the surface free energy of the steel plate to 40 erg/am2 or more, of which the polarity Coating film adhesion was improved by increasing the force component energy to 20 erg/c+m2 or more.
本発明は、上記のように、鋼板の表面自由エネルギーと
この表面自由エネルギーのうちの極性力成分エネルギー
を一定以上にして塗膜密着性を高めるのであるが、表面
自由エネルギーおよびその極性力成分エネルギーは、次
のようにしで求められる。As described above, the present invention improves coating film adhesion by increasing the surface free energy of the steel sheet and the polar force component energy of this surface free energy to a certain level. can be found as follows.
一般に、固体に液滴を滴下すると、第１図に示すように
、固体の表面自由エネルギーγ 、液体の表面エネルギ
ーγ４、界面エネルギーγｓＬの３つの力が調和し、平
衡になる。Generally, when a droplet is dropped onto a solid, three forces, the surface free energy γ of the solid, the surface energy γ4 of the liquid, and the interfacial energy γsL, are harmonized and become balanced, as shown in FIG.
表面自由エネルギーγ５は、Ｙ Ｏｕ ｎ Ｈによれば
、表面エネルギーγ５、界面エネルギーγ、Ｌと次の（
１）式に示すような関係が成立する。According to Y Oun H, the surface free energy γ5 is the following (
1) The relationship shown in the equation holds true.
γ＝γ ＋γｅ（１８θ ・・・・・・（１）５
Ｓし ム
ここでθは、液滴の接触角である。γ=γ +γe(18θ...(1)5
where θ is the contact angle of the droplet.
また、界面接着エネルギーＷ５Ｌと前記γ５、γ０およ
びγ、Ｌとの間には、次の関係式が成立する。Further, the following relational expression holds between the interfacial adhesion energy W5L and the above-mentioned γ5, γ0, and γ, L.
Ｗ３．＝γ、＋γ５−γ５Ｌ ・・・・・・（２）
（１）式のγ、を（２）式に代入すると、次のようにな
る。W3. =γ, +γ5−γ5L ・・・・・・(2)
Substituting γ in equation (1) into equation (2) yields the following.
Ｗ、し＝γ、（１＋ｃｏｓθ） ・・−・−（３）
さらに、Ｆｏｉｗｋｅｓによれば、界面接着エネルギー
Ｗ５Ｌは、次の（４）式に示すように、７アンデルワー
ルスカに関連する分散力成分と、水酸基などのように極
性を有する基に関連する極性力成分の２成分に分けられ
るとしている。W, shi=γ, (1+cosθ) ・・−・−(3)
Furthermore, according to Foiwkes, the interfacial adhesion energy W5L is determined by the dispersion force component related to 7 Anderwaalska and the polar force related to polar groups such as hydroxyl groups, as shown in the following equation (4). It is said that it can be divided into two components.
Ｗ、Ｌ＝ ２ （５−７＋ ７− Ｊ￥）−−−−−−
（４）ただし、１ｇ ：固体の分散力成分エネルギーγ
ｆ ：液体の分散力成分エネルギー
γ：：固体の極性力成分エネルギー
γＬ ：液体の極性力成分エネルギー
ここで、γ４＝γ６＋汽 ・・・・・・（５）γ −
γ ＋γ ・・・・・・（６）Ｓ ぢ
Ｓ
である。W, L= 2 (5-7+ 7- J¥)------
(4) However, 1g: solid dispersion force component energy γ
f: Dispersion force component energy of liquid γ:: Polar force component energy of solid γL: Polar force component energy of liquid Here, γ4 = γ6 + steam ...... (5) γ -
γ + γ ・・・・・・(6)S ぢ
It is S.
ところで液体として、表面張力が既知の液体を使用すれ
ば、γ１、γＩは判明しているので、γ４を求めること
がで終る。By the way, if a liquid whose surface tension is known is used as the liquid, since γ1 and γI are known, it is enough to find γ4.
例えば、水（表面張カフ２．８ｄｙｎｅ／ａｍ）のγブ
は２８．１ｄｙｎｅ／ｃｍ、 γ６は５１．０ｄｙｎ
ｅ／ｃ１６であり、ホルムアミド ｌＩＣ０Ｎ＋１２（
表面張力５８，２ｄｙｎｅ／ｃａｉ）のγＬは１９．５
ｄｙｎｅ／ｃｍ、 γｒは１８．７ｄｙｎｅ／ｃｍで
ある。For example, the γb of water (surface tension cuff 2.8 dyne/am) is 28.1 dyne/cm, and the γ6 is 51.0 dyne/cm.
e/c16, formamide lICON+12 (
γL of surface tension 58.2 dyne/cai) is 19.5
dyne/cm and γr are 18.7 dyne/cm.
従って、（５）式よりγ５を求め、これを（３）式に代
入し、液滴の接触角θを測定すれば、界面接着エネルギ
ーＷ、ｌＪを求めることができる。Therefore, by determining γ5 from equation (5), substituting it into equation (3), and measuring the contact angle θ of the droplet, the interfacial adhesion energies W and lJ can be determined.
そこでこれを利用して、分散力成分エネルギーγごおよ
び極性力成分エネルギーγｌが既知である２種の液体の
値を上記（４）式に代入すると、γ５、γＰを未知数と
する連立方程式が成立し、固体の分散力成分エネルギー
γｔと極性力成分エネルギーγＸとが求められる。Therefore, by using this and substituting the values of two types of liquids for which the dispersive force component energy γ and the polar force component energy γl are known into the above equation (4), a simultaneous equation with γ5 and γP as unknowns is established. Then, the dispersion force component energy γt and the polar force component energy γX of the solid are determined.
ここで求めたγ５、γ、を（６）式に代入すれば、固体
の表面自由エネルギーγ、が求められる。By substituting γ5 and γ obtained here into equation (6), the surface free energy γ of the solid can be obtained.
本発明において、表面自由エネルギーを前記のように高
めるには、鋼板表層の汚染層や密着性を阻害する不均一
な酸化層を除去する必要がある。In the present invention, in order to increase the surface free energy as described above, it is necessary to remove a contamination layer on the surface layer of the steel sheet and a non-uniform oxidation layer that inhibits adhesion.
このためには、アルカリ系処理液による。これは、酸系
処理液でも可能であるが、亜鉛層までがなり除去してし
まうためである。For this purpose, an alkaline treatment liquid is used. This is possible with an acid-based treatment solution, but the zinc layer is also removed.
アルカリ系処理液としては、アルカリ単味のものでも、
濃度、温度を高めれば、塗膜密着性を良好にすることが
できるが、水酸化アルカリ濃度が２〜１０％で、がッｃ
ｏＳＦｅＳＮｉの金属イオンの１種または２種以上をＯ
〜５０００ ｐｐａ＋、キレート削を２〜３０ｇ／ｌ含
有する処理液を使用するのが好ましい。As an alkaline treatment liquid, even if it is only alkaline,
If the concentration and temperature are increased, the adhesion of the coating film can be improved, but if the alkali hydroxide concentration is 2 to 10%,
One or more metal ions of oSFeSNi are O
It is preferable to use a treatment solution containing ~5000 ppa+ and 2 to 30 g/l of chelate shavings.
水酸化アルカリ濃度を２〜１０％にするのは、２％未満
であると、容易にエツチングが進まず、１０％を越える
と、処理液の粘性が増し、鋼板による液の持ち出しが多
くなる。When the alkali hydroxide concentration is between 2% and 10%, etching does not proceed easily when it is less than 2%, and when it exceeds 10%, the viscosity of the treatment liquid increases and the liquid is carried out by the steel plate more often.
また、処理液中に金属イオンを添加するのは、亜鉛より
電位が貴な／に属のイオンをエツチングが効率的に進む
ためであり、さらに、キレート剤を添加するのは、処理
液中に溶解した亜鉛イオンおよＶ金属イオンの溶解安定
化と沈澱防止のためである。金属イオンは５０００ ｐ
ｐｍより多くすると、めっ！層のエツチング量が多くな
り、処理液の劣化を早め、また、キレート剤を多くしな
ければならず、処Ｊ！！！費が高くなる。In addition, the reason why metal ions are added to the processing solution is to efficiently etch ions of the genus, which have a more noble potential than zinc, and the reason why a chelating agent is added to the processing solution is This is to stabilize the dissolution and prevent precipitation of dissolved zinc ions and V metal ions. Metal ions are 5000 p
If it's more than pm, it's meh! The amount of etching of the layer increases, the deterioration of the processing solution is accelerated, and the amount of chelating agent must be increased. ! ! Expenses will increase.
処理は、処理液の温度を５０〜７５℃にして、その中に
５〜２０秒間浸漬するのが好ましい。５０℃未満である
と、エツチングが進みにくく、７５℃を越えると、処理
液の蒸発量が多くなる。In the treatment, it is preferable to set the temperature of the treatment liquid to 50 to 75°C and immerse the body in the treatment liquid for 5 to 20 seconds. If the temperature is less than 50°C, etching will be difficult to proceed, and if it exceeds 75°C, the amount of evaporation of the processing liquid will increase.
（実施例）
種々の亜鉛めつき鋼板をアルカリ系処理液、酸系処理液
で処理して、まず鋼板の表面自由エネルギーおよび極性
力成分エネルギーを測定した。(Example) Various galvanized steel sheets were treated with an alkaline treatment liquid and an acid treatment liquid, and the surface free energy and polar force component energy of the steel sheets were first measured.
次にこの鋼板にＣｒ” ４０ｇ／ｌ、 Ｃｒ” ５０９
／Ｃ。Next, this steel plate was coated with Cr" 40g/l, Cr" 509
/C.
シリカゾル１０９ｉからなる塗布型クロメート処理液を
塗布して、乾燥することにより全Ｃｒが５０ ｍＢ／Ｂ
２Ｏ２ロメート皮膜を形成し、その上にエポキシ系プラ
イマー塗料を乾燥塗膜厚で５μになるように塗装し、１
９０ ’Ｃ″ｃｈ焼付乾燥した。引き続いてそのブライ
マー塗膜の上にポリエステル系上塗り塗料を乾燥塗膜厚
で１５μになるように塗装して、２１０℃で焼付乾燥し
た。By applying a coating type chromate treatment solution consisting of silica sol 109i and drying it, the total Cr can be reduced to 50 mB/B.
A 2O2 romate film is formed, and an epoxy primer paint is applied on top of it to a dry film thickness of 5 μm.
It was baked and dried at 90'C''ch.Subsequently, a polyester top coat was applied on the brimer coating film to a dry film thickness of 15μ, and it was baked and dried at 210°C.
第１表にアルカリ系またはｆｌｌ系処理液による処理条
件と表面自由エネルギー、極性力成分エネルギーを、第
２表に塗膜密着性を示す。Table 1 shows the treatment conditions, surface free energy, and polar force component energy using alkaline or FLL treatment liquids, and Table 2 shows the coating film adhesion.
なお、塗膜密着性の評価は、次の基準によった。The evaluation of coating film adhesion was based on the following criteria.
◎ 塗膜剥離なし
○ 塗膜が１〜３％剥離した
Δ 塗膜が３超〜２０％剥離した
Ｘ 塗膜が２０％超剥離した
第 ２ 表
箔１表、第２表より表面自由エネルギーが４０ｅｒｇ／
ｃｍ２以上で、かつそのうちの極性力成分エネルギーが
２０ ｅｒｇ／ａｍ２以上であるものは、塗膜密着性が
優れている６
（発明の効果）
以上のように、本発明によれば、塗布型クロメート処理
液のＭＬ戒を変更しなくても、種々の亜鉛めっき鋼板の
塗膜密着性を向上させることができる。◎ No peeling of the paint film○ 1-3% of the paint film peeled off Δ More than 3-20% of the paint film peeled off 40erg/
cm2 or more and whose polar force component energy is 20 erg/am2 or more has excellent coating film adhesion.6 (Effects of the Invention) As described above, according to the present invention, coating type chromate The coating adhesion of various galvanized steel sheets can be improved without changing the ML rules of the treatment liquid.
第１図は、固体に液滴を滴下して平衡になった場合の固
体の表面自由エネルギーγ５、液体の表面エネルギーγ
６、界面エネルギー’ＳＬの作用方向および接触角θを
示すものである。Figure 1 shows the surface free energy γ5 of the solid and the surface energy γ of the liquid when a droplet is dropped onto the solid and equilibrium is reached.
6. Direction of action of interfacial energy 'SL and contact angle θ are shown.
Claims (3)
鋼板の表面自由エネルギーを４０ｅｒｇ／ｃｍ＾２以上
、そのうちの極性力成分エネルギーを２０ｅｒｇ／ｃｍ
＾２以上にした後、塗布型クロメート処理を施すことを
特徴とする亜鉛めっき鋼板の表面処理方法。(1) Treat galvanized steel sheet with alkaline treatment liquid,
The surface free energy of the steel plate is 40 erg/cm^2 or more, of which the polar force component energy is 20 erg/cm.
A method for surface treatment of a galvanized steel sheet, which comprises applying a coating type chromate treatment after increasing the temperature to ^2 or more.
２〜１０％で、かつＣｏ、Ｆｅ、Ｎｉの金属イオンの１
種または２種以上を０〜５０００ｐｐｍ、キレート剤を
２〜３０ｇ／ｌ含有する処理液を使用して、その液温を
５０〜７５℃にした状態で５〜２０秒処理することを特
徴とする特許請求の範囲第１項に記載の亜鉛めっき鋼板
の表面処理方法。(2) As an alkaline treatment liquid, the alkali hydroxide concentration is 2 to 10%, and 1% of the metal ions of Co, Fe, and Ni are used.
It is characterized by using a treatment solution containing 0 to 5000 ppm of the species or two or more species and 2 to 30 g/l of the chelating agent, and treating the solution at a temperature of 50 to 75°C for 5 to 20 seconds. A method for surface treatment of a galvanized steel sheet according to claim 1.
リロ三酢酸またはこれらのナトリウム塩を使用すること
を特徴とする特許請求の範囲第２項に記載の亜鉛めっき
鋼板の表面処理方法。(3) The method for surface treatment of a galvanized steel sheet according to claim 2, characterized in that EDTA, gluconic acid, nitrilotriacetic acid, or a sodium salt thereof is used as the chelating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4720987A JPH0713305B2 (en) | 1987-03-02 | 1987-03-02 | Surface treatment method for zinc plated steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4720987A JPH0713305B2 (en) | 1987-03-02 | 1987-03-02 | Surface treatment method for zinc plated steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63213682A true JPS63213682A (en) | 1988-09-06 |
| JPH0713305B2 JPH0713305B2 (en) | 1995-02-15 |
Family
ID=12768761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4720987A Expired - Lifetime JPH0713305B2 (en) | 1987-03-02 | 1987-03-02 | Surface treatment method for zinc plated steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713305B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016075920A1 (en) * | 2014-11-12 | 2016-05-19 | Ｊｆｅスチール株式会社 | Method for manufacturing galvanized steel sheet |
-
1987
- 1987-03-02 JP JP4720987A patent/JPH0713305B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016075920A1 (en) * | 2014-11-12 | 2016-05-19 | Ｊｆｅスチール株式会社 | Method for manufacturing galvanized steel sheet |
| JPWO2016075920A1 (en) * | 2014-11-12 | 2017-04-27 | Ｊｆｅスチール株式会社 | Method for producing galvanized steel sheet |
| CN107109660A (en) * | 2014-11-12 | 2017-08-29 | 杰富意钢铁株式会社 | The manufacture method of zinc-based metal plated steel sheet |
| EP3219826A4 (en) * | 2014-11-12 | 2017-11-22 | JFE Steel Corporation | Method for manufacturing galvanized steel sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0713305B2 (en) | 1995-02-15 |
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