JPH01180997A - Production of non-coated colored steel sheet - Google Patents
Production of non-coated colored steel sheetInfo
- Publication number
- JPH01180997A JPH01180997A JP218088A JP218088A JPH01180997A JP H01180997 A JPH01180997 A JP H01180997A JP 218088 A JP218088 A JP 218088A JP 218088 A JP218088 A JP 218088A JP H01180997 A JPH01180997 A JP H01180997A
- Authority
- JP
- Japan
- Prior art keywords
- based alloy
- steel sheet
- steel plate
- electroplating
- alloy electroplating
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000000956 alloy Substances 0.000 claims abstract description 60
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 60
- 238000009713 electroplating Methods 0.000 claims abstract description 39
- 238000007747 plating Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 16
- 239000004020 conductor Substances 0.000 abstract description 3
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000002659 electrodeposit Substances 0.000 abstract 1
- 239000011701 zinc Substances 0.000 description 57
- 239000010960 cold rolled steel Substances 0.000 description 8
- 238000004040 coloring Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000002048 anodisation reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 229910007567 Zn-Ni Inorganic materials 0.000 description 1
- 229910007614 Zn—Ni Inorganic materials 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
- 235000009529 zinc sulphate Nutrition 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、光学機器、ＯＡ機器等に用いられる非塗装着
色鋼板の製造方法に係り、特に製造プロセスを簡素化で
き、製造コストを低減できる非塗装着色鋼板の製造方法
に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for manufacturing unpainted colored steel sheets used for optical equipment, OA equipment, etc., and in particular can simplify the manufacturing process and reduce manufacturing costs. The present invention relates to a method for manufacturing a non-painted colored steel sheet.
〈従来技術およびその問題点〉
非塗装着色鋼板とは、塗装以外の方法により着色した鋼
板をいい、黒色鋼板が代表的である。<Prior art and its problems> A non-painted colored steel plate refers to a steel plate colored by a method other than painting, and a black steel plate is a typical example.
黒色鋼板の製造方法としては、特開昭５８−１５１４９
１号、特開昭６１−１１０７９８号において、Ｚｎ−Ｎ
ｉ合金めっき後、陽極酸化処理を行なう方法が開示され
ている。The method for manufacturing black steel plate is disclosed in Japanese Patent Application Laid-Open No. 58-15149.
No. 1, JP-A-61-110798, Zn-N
A method is disclosed in which anodization treatment is performed after i-alloy plating.
上記黒色鋼板の製造方法においてはまず冷延鋼板にＺｎ
−Ｎｉめっき（通常のＺｎ−Ｎｉめっき、３００〜９０
０ｃ／ｄｍ２）を１０〜３ｏｇ／ｒｎ’程度施こした後
、陽極酸化処理を行なう。In the method for manufacturing the black steel sheet described above, first, Zn is added to the cold rolled steel sheet.
-Ni plating (normal Zn-Ni plating, 300-90
0c/dm2) at a rate of about 10 to 3 og/rn', then anodization treatment is performed.
陽極酸化処理は、硝酸塩、Ｎａ２ＳＯ４、（ＮＨ４）２
３０４等を含む電解質中て鋼板を陽極として、通電（通
常１００〜３００ｃ／ｄｍ２）するもので鋼板に酸化処
理を行なう。Anodizing treatment uses nitrate, Na2SO4, (NH4)2
The steel plate is oxidized in an electrolyte containing No. 304 or the like by applying current (usually 100 to 300 c/dm2) using the steel plate as an anode.
次いて陽極酸化処理を施こした鋼板にクロメート処理を
行ない、その後樹脂被膜処理を行い黒色鋼板を製造する
。Next, the anodized steel sheet is subjected to chromate treatment, and then subjected to resin coating treatment to produce a black steel sheet.
クロメート処理は、Ｃｒ○３５〜１０ｇ／で、液温２０
〜５０℃、ｐＨ１〜３のクロム酸水溶液に鋼板を５〜１
０秒浸漬して行なフている。Chromate treatment is Cr○35-10g/liquid temperature 20
A steel plate is placed in a chromic acid aqueous solution of pH 1 to 3 at ~50°C.
Immerse it for 0 seconds.
樹脂被膜処理は、鋼板に水溶性樹脂をロールコータ−で
約１μｍ程度の厚さに塗布し、その後乾燥することによ
り行なっている。The resin coating treatment is carried out by applying a water-soluble resin to a thickness of about 1 μm on a steel plate using a roll coater, and then drying it.
しかしながら、従来の黒色鋼板の製造方法では、陽極処
理を施こす必要かあるため、工程か複雑となり、より簡
素化された製造方法の開発か望まれていた。However, the conventional method for producing black steel sheets requires anodization, which complicates the process, and there has been a desire to develop a simpler production method.
〈発明の目的〉
本発明の目的は、上述した従来の技術の問題点を解決し
ようとするもので、簡便で安価な非塗装着色鋼板の製造
方法を提供しようとするものである。<Object of the Invention> The object of the present invention is to solve the problems of the conventional techniques described above, and to provide a simple and inexpensive method for producing a non-painted colored steel sheet.
〈発明の構成〉
本発明は、鋼板にＺｎ系合金電気めっきを行なった後、
該鋼板を該Ｚｎ系合金電気めっきて用いたと同一の浴中
に浸漬させることを特徴とする非塗装着色鋼板の製造方
法を提供する。<Structure of the Invention> The present invention provides the following methods: After electroplating a steel plate with a Zn-based alloy,
Provided is a method for producing a non-painted colored steel sheet, characterized in that the steel sheet is immersed in the same bath used for electroplating the Zn-based alloy.
以下に本発明の非塗装着色鋼板の製造方法について詳細
に説明する。The method for producing a non-painted colored steel sheet according to the present invention will be explained in detail below.
本発明において用いる鋼板の種類は問わない。 鋼板に
Ｚｎ系合金電気めっきを行う。The type of steel plate used in the present invention does not matter. Zn-based alloy electroplating is performed on a steel plate.
Ｚｎ系合金電気めっきは通常のＺｎ系合金めつきてもよ
く、その液組成、めっき条件等は後述する条件特にｐＨ
以外は特に制約を受けることはない。 ここて、Ｚｎ系
合金めっきは、１０〜２０重量％Ｎｉ−Ｚｎめっきか好
ましいか、この他にＣ０１ＦｅとのＺｎ合金めっき等が
あげられ、またこれらに限定されるものではない。Zn-based alloy electroplating may be carried out by ordinary Zn-based alloy plating, and the liquid composition, plating conditions, etc. are determined according to the conditions described later, especially pH.
Other than that, there are no particular restrictions. Here, the Zn-based alloy plating is preferably 10 to 20% by weight Ni--Zn plating, and other examples include Zn alloy plating with C01Fe, and the present invention is not limited to these.
Ｚｎ系合金電気めっき液は、上記合金の硫酸塩、塩化物
塩等およびこれらの混合物か好ましいか、これらに限定
されるものてはない。The Zn-based alloy electroplating solution is preferably a sulfate salt, chloride salt, etc. of the above-mentioned alloy, or a mixture thereof, but is not limited thereto.
Ｚｎ系合金電気めっき時の鋼板へのＺｎ系合金電気めフ
き量は１０〜３０ｇ／１１１２程度であるのが好ましい
。The amount of Zn-based alloy electroplated onto the steel sheet during Zn-based alloy electroplating is preferably about 10 to 30 g/1112.
本発明は、Ｚｎ系合金電気めっき後、Ｚｎ系合金電気め
っきに用いた浴中に、鋼板を浸漬させることを特徴とす
る。The present invention is characterized in that after Zn-based alloy electroplating, the steel plate is immersed in the bath used for Zn-based alloy electroplating.
本工程で、鋼板に電着していたＺｎ系合金が再溶解し、
鋼板のＺｎ系合金表面に微細なりラックが生じることに
より、鋼板が黒色に変色する。In this process, the Zn-based alloy that was electrodeposited on the steel plate is remelted,
The steel plate turns black due to the formation of fine racks on the Zn-based alloy surface of the steel plate.
第１図に亜鉛の見かけの溶解度とｐＨとの関係を示す。Figure 1 shows the relationship between the apparent solubility of zinc and pH.
Ｚｎは低ｐＨ側と高ｐＨ側にて溶解度が高く、Ｚｎが
再溶解する。Zn has high solubility on the low pH side and high pH side, and Zn is redissolved.
一般のＺｎ系合金電気めっきはｐＨ５以下の酸性溶液で
行なわれる。 Ｚｎ系合金の再溶解だけを考慮すれば、
ｐ）（は低い方が良い。General Zn-based alloy electroplating is performed in an acidic solution with a pH of 5 or less. If only the remelting of the Zn-based alloy is considered,
p) (The lower the better.
Ｚｎ系合金電気めっき時の電析効率はｐＨが低くなると
、低下するため、本発明て用いるＺｎ系合金電気めっき
浴のｐＨは、Ｚｎ系合金電気めっき時の電析効率とＺｎ
系合金の再溶解の効率を考慮して５以下であるか、１程
度が好ましい。Since the electrodeposition efficiency during Zn-based alloy electroplating decreases as the pH decreases, the pH of the Zn-based alloy electroplating bath used in the present invention is determined based on the electrodeposition efficiency during Zn-based alloy electroplating and Zn-based alloy electroplating.
Considering the efficiency of remelting the system alloy, it is preferably 5 or less, or about 1.
Ｚｎ系合金電気めっき浴の温度（す高い方かめっき金属
イオンの鋼板表面への供給が良く、Ｚｎ系合金電気めっ
きの効率が良い。 また、Ｚｎ系合金の再溶解もＨ１イ
オンの拡散速度が速くなり、効率が良い。 したがっ
て、Ｚｎ系合金電気めっき浴の温度は浴の損失が大きく
ならない程度で高い方がよい。The higher the temperature of the Zn-based alloy electroplating bath, the better the supply of plating metal ions to the steel sheet surface, and the higher the efficiency of Zn-based alloy electroplating. Also, the higher the temperature, the higher the temperature of the Zn-based alloy electroplating bath. It is faster and more efficient. Therefore, the temperature of the Zn-based alloy electroplating bath should be as high as possible without increasing bath loss.
Ｚｎ系合金電気めっき浴の液流速が速くなると、温度か
高くなるのと同様の効果を持ち、Ｚｎ系合金電気めっき
およびＺｎ系合金の再溶解の効率か良くなる。Increasing the flow rate of the Zn-based alloy electroplating bath has the same effect as increasing the temperature, and improves the efficiency of Zn-based alloy electroplating and remelting of the Zn-based alloy.
次に本発明の製造工程の一例により、本発明の非塗装着
色鋼板の製造方法を説明する。Next, a method for manufacturing a non-painted colored steel sheet according to the present invention will be explained using an example of the manufacturing process according to the present invention.
第２図は本発明の非塗装着色鋼板の製造工程の一例を示
す線図である。FIG. 2 is a diagram showing an example of the manufacturing process of the non-painted colored steel sheet of the present invention.
鋼板（ｉｆ）１は、コンダクタ−ロール２およびダムロ
ール３により連続的に水平方向に移動する。 該鋼板１
は、移動中にめっき槽４においてＺｎ系合金電気めっき
工程７、その後Ｚｎ系合金の再溶解工程（着色処理）８
が施こされる。The steel plate (if) 1 is continuously moved in the horizontal direction by conductor rolls 2 and dam rolls 3. The steel plate 1
During the movement, a Zn-based alloy electroplating step 7 is carried out in a plating tank 4, and then a Zn-based alloy remelting step (coloring treatment) 8
will be performed.
Ｚｎ系合金電気めっき工程７とＺｎ系合金の再溶解工程
（着色処理）８は同一のめりき槽４中で行なわれる。
該めっき槽４にはＺｎ系合金電気めっき液６が満たされ
ている。The Zn-based alloy electroplating step 7 and the Zn-based alloy remelting step (coloring treatment) 8 are performed in the same plating tank 4.
The plating tank 4 is filled with a Zn-based alloy electroplating solution 6.
Ｚｎ系合金電気めっき工程７においては、アノード電極
５および鋼板１をカソード電極として、鋼板１の両面に
Ｚｎ系合金を電析する。In the Zn-based alloy electroplating step 7, a Zn-based alloy is electrodeposited on both surfaces of the steel plate 1 using the anode electrode 5 and the steel plate 1 as cathode electrodes.
その後、Ｚｎ系合金の再溶解工程（着色処理）８にて、
鋼板１はＺｎ系合金電気めっき時に電析したＺｎ系合金
の１部が再溶解し、着色する。 Ｚｎ系合金電気めっき
浴６のめっき液の流れる方向は、鋼板１の進向と同一ま
たは逆方向のいずれても良い。After that, in the Zn-based alloy remelting step (coloring treatment) 8,
In the steel plate 1, a part of the Zn-based alloy deposited during Zn-based alloy electroplating is remelted and colored. The direction in which the plating solution in the Zn-based alloy electroplating bath 6 flows may be the same as or opposite to the advancing direction of the steel plate 1.
鋼板１は、Ｚｎ系合金電気めっき工程７とＺｎ系合金の
再溶解工程（着色処理）８を１回施こしても良いし、複
数回繰り返して施こしても良い。The steel plate 1 may be subjected to the Zn-based alloy electroplating step 7 and the Zn-based alloy remelting step (coloring treatment) 8 once or repeatedly.
〈実施例〉 本発明を実施例を用いて具体的に説明する。<Example> The present invention will be specifically explained using examples.
（実施例１）
冷延鋼板を用いて第２図に示す製造装置により黒色鋼板
を製造した。(Example 1) A black steel plate was manufactured using a manufacturing apparatus shown in FIG. 2 using a cold rolled steel plate.
冷延鋼板のラインスピードは１０ ｍ／ｍｉｎであった
。 Ｚｎ系合金電気めっき浴の組成はＺｎＳＯ４＋Ｎｉ
ＳＯ４１，５モル／℃Ｎ ｉ ／ Ｚ ｎ ＋ Ｎ ｉ
モル比 ０４ｐＨ１，０
イ夜イ吉Ａｓｏ℃
であった。The line speed of the cold-rolled steel plate was 10 m/min. The composition of Zn-based alloy electroplating bath is ZnSO4+Ni
SO4 1.5 mol/℃N i / Z n + N i
The molar ratio was 04pH 1.0Aso°C.
Ｚｎ系合金電気めっきを上記浴中て１００Ａ ／ ｄ
ｒｎ’ ｘ ６秒間行なった。 この時のＺｎ系合金電
気めっき浴の流速は１ ｍ ／ ｓであり、冷延鋼板の
穆動方向に対して逆方向に流れていた。Zn-based alloy electroplating in the above bath at 100A/d
rn' x 6 seconds. At this time, the flow rate of the Zn-based alloy electroplating bath was 1 m/s, and the flow was in the opposite direction to the direction of vertical movement of the cold-rolled steel sheet.
冷延鋼板に電析されたＺｎ−（１２重量％）Ｎ１は２０
ｇ／ｒｎ’てあった。Zn-(12% by weight) N1 electrodeposited on cold rolled steel plate was 20
g/rn' was there.
次にＺｎ−Ｎｉ合金めっきした冷延鋼板に同一浴中にて
Ｚｎ系合金の再溶解処理（黒色処理）を行った。Next, the cold-rolled steel plate plated with the Zn--Ni alloy was subjected to remelting treatment (black treatment) of the Zn-based alloy in the same bath.
Ｚｎ系合金めっきの再溶解処理を行った時間は、２０秒
であり、冷延鋼板かＺｎ系合金電気めっき浴に浸漬され
ている距離は３．３ｍであった。The time for remelting the Zn-based alloy plating was 20 seconds, and the distance that the cold-rolled steel sheet was immersed in the Zn-based alloy electroplating bath was 3.3 m.
得られた黒色鋼板の黒化度を、スカ試験機■製色差針に
より測定した。The degree of blackening of the obtained black steel plate was measured using a color difference needle manufactured by Ska Test Instruments ■.
色差計においてＬ値とは、黒化度を示す目安であり、Ｌ
＝１００のとき、白色であり、Ｌ＝０のとき黒色とし、
黒化度を０〜１００の間で表示するものである。In a color difference meter, the L value is a measure of the degree of blackening.
When L=100, it is white, and when L=0, it is black,
The degree of blackening is displayed between 0 and 100.
得られた黒色鋼板はＬ値は１２てあった。The obtained black steel plate had an L value of 12.
（実施例２）
実施例１において用いためっき糟を３つ直列に配列し、
冷延鋼板をラインスピードを実施例１の３倍（３０ｍ／
ｍ１ｎ）で処理を行った。 他の条件は実施例１と同一
であった。(Example 2) Three plating pots used in Example 1 were arranged in series,
The line speed for cold-rolled steel sheets was three times that of Example 1 (30 m/
m1n). Other conditions were the same as in Example 1.
得られた黒色鋼板のＬ値は１３てあった。The L value of the obtained black steel plate was 13.
〈発明の効果〉
本発明はＺｎ系合金電気めっきを行った後、Ｚｎ系合金
電気めっきに用いたのと同一のめっき浴中に鋼板を浸漬
させる非塗装着色鋼板の製造方法であり、製造プロセス
を簡素化し、製造コストを低減することができる。<Effects of the Invention> The present invention is a method for manufacturing a non-painted colored steel sheet in which the steel sheet is subjected to Zn-based alloy electroplating and then immersed in the same plating bath used for Zn-based alloy electroplating, and the manufacturing process It is possible to simplify the process and reduce manufacturing costs.
また、本発明によれは、めっきされたＺｎ系合金の再溶
解で溶出するＺｎ”″イオンを有効利用てき、かつ、ラ
インの改造を要しないので一つのラインで複数の製品の
製造が可能となる。Furthermore, according to the present invention, the Zn"" ions eluted by remelting of the plated Zn-based alloy can be effectively used, and since no modification of the line is required, it is possible to manufacture multiple products on one line. Become.
第１図は、亜鉛の見かけの溶解度とｐＨとの関係を示す
図である。
第２図は、本発明の製造方法の１例を示す線図である。
符号の説明
１・・・鋼板、 ２・・・コンダクタロール、
３・・・ダムロール、 ４・・・めっき槽、５・・・
アノード電極、
６・・・Ｚｎ系合金電気めっき液、
７・・・Ｚｎ系合金電気めっき工程、FIG. 1 is a diagram showing the relationship between the apparent solubility of zinc and pH. FIG. 2 is a diagram showing one example of the manufacturing method of the present invention. Explanation of symbols 1... Steel plate, 2... Conductor roll,
3...Dam roll, 4...Plating tank, 5...
Anode electrode, 6... Zn-based alloy electroplating solution, 7... Zn-based alloy electroplating process,
Claims (1)
板を該Ｚｎ系合金電気めっきで用いたと同一の浴中に浸
漬させることを特徴とする非塗装着色鋼板の製造方法。(1) A method for producing a non-painted colored steel sheet, which comprises electroplating a steel sheet with a Zn-based alloy and then immersing the steel sheet in the same bath used in the Zn-based alloy electroplating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP218088A JPH01180997A (en) | 1988-01-08 | 1988-01-08 | Production of non-coated colored steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP218088A JPH01180997A (en) | 1988-01-08 | 1988-01-08 | Production of non-coated colored steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01180997A true JPH01180997A (en) | 1989-07-18 |
Family
ID=11522163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP218088A Pending JPH01180997A (en) | 1988-01-08 | 1988-01-08 | Production of non-coated colored steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01180997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100385347B1 (en) * | 2000-09-01 | 2003-05-27 | 주식회사 창영물산 | The horizontal electrolytic galvanizing equipment and its galvanizing method for steel plate between the thickness of 0.30mm and 0.15mm |
-
1988
- 1988-01-08 JP JP218088A patent/JPH01180997A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100385347B1 (en) * | 2000-09-01 | 2003-05-27 | 주식회사 창영물산 | The horizontal electrolytic galvanizing equipment and its galvanizing method for steel plate between the thickness of 0.30mm and 0.15mm |
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