JPS6112895A - Method and device for chemical treatment of tin plated steel sheet - Google Patents
Method and device for chemical treatment of tin plated steel sheetInfo
- Publication number
- JPS6112895A JPS6112895A JP13364884A JP13364884A JPS6112895A JP S6112895 A JPS6112895 A JP S6112895A JP 13364884 A JP13364884 A JP 13364884A JP 13364884 A JP13364884 A JP 13364884A JP S6112895 A JPS6112895 A JP S6112895A
- Authority
- JP
- Japan
- Prior art keywords
- tin
- steel strip
- plated steel
- strip
- bath
- 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 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- 238000011282 treatment Methods 0.000 title claims abstract description 32
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 9
- 239000000126 substance Substances 0.000 title description 7
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000012993 chemical processing Methods 0.000 claims description 5
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 4
- 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 claims description 4
- 238000005868 electrolysis reaction Methods 0.000 claims description 3
- 239000011651 chromium Substances 0.000 description 22
- 238000007747 plating Methods 0.000 description 7
- 230000008021 deposition Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910019923 CrOx Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、錫系めっき鋼板（銅帯を含む、以下同じ）に
塗膜密着性の優れた化学処理皮膜を形成させる方法およ
び装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and an apparatus for forming a chemically treated film with excellent film adhesion on a tin-based plated steel sheet (including a copper strip, the same applies hereinafter).
錫めっき鋼板は、缶詰あるいは報告など種々の金属容器
用の材料として広く使用されているが、近年、缶の内外
面ともに塗装を施して使用されるケースが増加している
。この場合、塗膜密着性の良否が塗装後耐食性を左右す
る重要な因子となる。Tin-plated steel sheets are widely used as a material for various metal containers such as cans and reports, but in recent years, there has been an increase in the number of cases in which cans are coated on both the inside and outside surfaces. In this case, the quality of the coating film adhesion is an important factor that determines the corrosion resistance after coating.
錫めっき鋼板の塗膜密着性を高める方法として、硫酸、
フッ素化合物などを助剤として含有する無水クロム酸系
処理浴中で、陰極電解することにより、金属クロム（以
後、Ｃｒ’という）と、水和酸化クロム（以後、ＣｒＯ
ｘという）からなる化学処理皮膜を形成させる方法が知
られている。Sulfuric acid,
Metal chromium (hereinafter referred to as Cr') and hydrated chromium oxide (hereinafter referred to as CrO
A method of forming a chemically treated film consisting of (referred to as x) is known.
しかし、実際にこの方法を錫めっき鋼板に適用しようと
する場合、以下のような問題点がある。However, when this method is actually applied to tin-plated steel sheets, the following problems arise.
まず、Ｃｒ とＣｒ０Ｘを１回の電解処理で同時に生
成させるため、各々を所要の値に制御することが困難で
ある。また、無水クロム酸系浴中での陰極電解処理にお
いては、１つのライン上で銅帯に連続して錫めっきを施
し、そのまま後続、して化学処理を施すため、錫めっき
の速度に合わせて化学処理の速度はほぼ一義的に決まる
。厚めつきする時は遅く、薄めつきの場合は早くなる。First, since Cr 2 and Cr0X are generated simultaneously in one electrolytic treatment, it is difficult to control each to the required value. In addition, in cathodic electrolytic treatment in a chromic anhydride bath, tin plating is applied continuously to the copper strip on one line, and then chemical treatment is applied subsequently, so the speed is adjusted to match the tin plating speed. The speed of chemical processing is almost uniquely determined. When it is thick, it is slow, and when it is thin, it is fast.
その他、事故、トラブル等の発生により、化学処理のラ
インスピードが同一コイル内で変動することもある。In addition, the chemical processing line speed may fluctuate within the same coil due to accidents, troubles, etc.
Ｃｒ 、Ｃｒ０Ｘの析出効率が陰極電流密度に大きく
依存するため、上述した錫めっき付着量変更等のためラ
インスピードを変化させた場合、通常の電気量密度一定
利得では、Ｃｒ 、Ｃｒ０Ｘの生酸量を一定に保つこ
とが不可能である。Since the deposition efficiency of Cr and Cr0X greatly depends on the cathode current density, when the line speed is changed to change the tin plating amount mentioned above, the amount of bioacid of Cr and Cr0X will decrease under the normal charge density constant gain. It is impossible to keep constant.
本発明は、電解用電極にストリップ進行方向に移動可能
な遮弊板を電極とストリップとの間に取り付けることに
より電気量密度と、電流密度を独立に制御することを可
能とし、これによりラインスピード変更時のＣｒ’、Ｃ
ｒ０Ｘ生成量の変化を防止するとともに、製品特性上要
求されるＣｒ’。The present invention makes it possible to independently control the electric charge density and current density by attaching a shielding plate movable in the direction of strip movement to the electrolytic electrode between the electrode and the strip, thereby making it possible to control the line speed. Cr', C at the time of change
Cr' is required for product characteristics as well as preventing changes in the amount of r0X produced.
Ｃｒ０Ｘ付着量に応じて、電気量密度、電流密度を適宜
な値に設定することを可能とする錫系めつき鋼板の化学
処理方法および装置を提供することな目的とする。It is an object of the present invention to provide a method and apparatus for chemically treating a tin-based plated steel sheet, which makes it possible to set the electric charge density and current density to appropriate values depending on the amount of Cr0X deposited.
なお、本明細書では、以下のように定義する。In addition, in this specification, it is defined as follows.
電気量密度二単位面積の鋼板が電解処理中に受ける電気
の総量（単位 ＣＩｄｌＩ２）
電流密度：鋼板に平行な面で切断した電解処理液の単位
面積に単位時間に流れる電気量
（単位 ｃ／ｄｍ２ ｍ ｓｅｃ ＝Ａ／ｄｍ２ ）本
発明の第１の態様によれば、錫系めつき鋼帯に無水クロ
ク酸系処理浴を用いた陰極電解処理をするに当り、投入
電流の密度と前記鋼帯の単位面積当りに受ける電気量と
を互いに独立して制御することを特徴とする錫系めっき
鋼帯の化学処理方法を提供することにある。Current density: Total amount of electricity that a steel plate of two unit area receives during electrolytic treatment (unit: CIdlI2) Current density: The amount of electricity that flows per unit time into a unit area of electrolytic treatment solution cut on a plane parallel to the steel plate (unit: c/dm2) m sec = A/dm2) According to the first aspect of the present invention, when cathodic electrolytically treating a tin-plated steel strip using an anhydrous chromic acid-based treatment bath, the density of the applied current and the steel strip are An object of the present invention is to provide a method for chemically treating a tin-based plated steel strip, which is characterized in that the amount of electricity received per unit area of the tin-plated steel strip is controlled independently of each other.
本発明の第２の態様によれば、錫系めっき鋼帯を無水ク
ロム酸系処理浴を用いた陰極電解処理を施す装置におい
て、前記処理浴内に設けられた電極の前記鋼帯対向面に
、前記鋼帯の進行方向に移動可能な電気遮弊板を設けた
ことを特徴とする錫系めっき鋼帯の化学処理装置を提供
する巳とにある。According to a second aspect of the present invention, in an apparatus for subjecting a tin-plated steel strip to a cathodic electrolytic treatment using a chromic anhydride-based treatment bath, a surface of an electrode provided in the treatment bath facing the steel strip is provided. Another object of the present invention is to provide a chemical processing apparatus for a tin-based plated steel strip, characterized in that an electric shielding plate movable in the direction of movement of the steel strip is provided.
以下、本発明を更に詳細に説明する。The present invention will be explained in more detail below.
本発明における錫系めっき鋼板とは、一般にｒぶりき」
と呼ばれる通常の錫めっき鋼板のはか、耐食性向上を目
的として、Ｎｉなとの錫以外の金属を含有させた錫系合
金めっき鋼板、あるいは同様の目的でＮｉ等の下地めっ
き処理を施した錫系積層めっき鋼板などを含むものであ
り、これらのいずれに対しても本発明の適用が可能であ
る。In the present invention, the tin-based plated steel sheet generally refers to "R tin plated"
Tin-based alloy plated steel sheets containing metals other than tin, such as Ni, for the purpose of improving corrosion resistance, or tin coated with a base plating treatment such as Ni for the same purpose. The present invention can be applied to any of these materials, including laminated plated steel sheets and the like.
無水クロム酸系処理浴としては、陰極電解処理によって
、Ｃｒ 、！ｌ：ＣｒＯｘからなる皮膜の得られに
るものであれば何でもよいが、浴組成の管理しゃすさ、
良好な電流効率、錫系めっきの外観を劣化させないなど
の条件を考慮すれば、無水クロム酸５〜１００ｇ／４程
度の低濃度サージェント浴、もしくはこれに少量のフッ
素化合物を添゛加したものなどが対象として好ましい。As a chromic acid anhydride treatment bath, Cr,! l: Anything that can produce a film consisting of CrOx may be used, but the ease of controlling the bath composition,
Considering conditions such as good current efficiency and not deteriorating the appearance of tin-based plating, a low concentration Sargent bath of about 5 to 100 g/4 of chromic anhydride, or a bath with a small amount of fluorine compound added to this bath, etc. is preferable as a target.
錫系めっきの上層に形成される化学処理被膜中のＣｒ
およびＣｒ０Ｘの量は、使用目的に応じてに
適宜調節されるが、本発明の目的である塗膜密着性の向
上効果を得、しかも塗料濡れ性や製缶性（シーム溶接性
あるいは半田性）を害さないためにはＣｒ’ ２〜２０
ｔｘｇ／ｍ２．ＣｒＯｘｌ ＝ １０ ｍｇ／ｍ２程度
が望ましい。Cr in the chemically treated film formed on the top layer of tin-based plating
The amount of Cr0X and Cr0X can be adjusted as appropriate depending on the purpose of use, but it is possible to obtain the effect of improving paint film adhesion, which is the objective of the present invention, and to improve paint wettability and can forming properties (seam weldability or solderability). In order not to harm the
txg/m2. It is desirable that CrOxl = about 10 mg/m2.
本発明の最大の特徴は、クロム酸系浴中陰極電解処理用
の対極に、ストリップ進行方向に移動可能な遮弊板を電
極とストリップとの間に位置するよう取り付け、これに
よって電気量密度と独立に電流密度の制御を可能とした
ことである。これにより、製品特性上要求されるＣｒ’
量、Ｃｒ０ＸＪｉＬに応じて、電気量密度、電流密度を
適宜調整することが可能となる。The most important feature of the present invention is that a shielding plate movable in the strip advancing direction is attached to the counter electrode for cathodic electrolysis treatment in a chromic acid bath so as to be located between the electrode and the strip. This makes it possible to independently control the current density. As a result, Cr' required for product characteristics
It becomes possible to adjust the electric quantity density and current density as appropriate depending on the amount and Cr0XJiL.
さらに、本発明において、ラインスピード信号によって
電極遮弊板の位置制御を行うことにより、錫付着量変更
等に伴なうラインスピード変化時に、化学処理セクショ
ンにおける電気量密度、電流密度を共に一定に制御する
ことができる。従来の重クロム酸系の処理浴を用いた化
学処理では、電気量密“度一定利得（すなわち、投入電
流値をラインスピードに比例して変化させる制御）によ
り、実質的に均一な化学処理皮膜が得られるに
が、無水クロム酸系処理皮膜によって、Ｃｒ。Furthermore, in the present invention, by controlling the position of the electrode shielding plate using the line speed signal, both the electrical quantity density and the current density in the chemical processing section can be kept constant when the line speed changes due to changes in the amount of tin deposited, etc. can be controlled. In conventional chemical treatment using a dichromate-based treatment bath, a substantially uniform chemically treated film is achieved by controlling the charge density at a constant gain (i.e., controlling the input current value to vary in proportion to the line speed). However, Cr.
Ｃ０Ｘを生成させる場合、既述のように、析出効率の電
流密度依存性が大きいため、電気量密度一定制御では、
Ｃｒ’、Ｃｒｏｘの量を一定に保つことができない。When generating COX, as mentioned above, the dependence of deposition efficiency on current density is large, so with constant electricity density control,
The amounts of Cr' and Crox cannot be kept constant.
本発明の方法により、電気量密度と共に電流密度も一定
とする制御を行うことにより。By controlling the current density as well as the electric quantity density to be constant according to the method of the present invention.
Ｃｒ’量、ＣｒＯｘ量を一定に保つことが可能となる。It becomes possible to keep the Cr' amount and CrOx amount constant.
なお、本発明中の無水クロム酸系処理浴による陰極電解
処理に先立って、錫系めっき鋼板の表面活性化のため、
炭酸ナトリウム、重炭酸ナトリウムなどの弱アルカリ性
浴中陰極電解または浸漬処理などにより表面活性化処理
を実施することが好ましい。In addition, prior to the cathodic electrolytic treatment using the chromic acid anhydride treatment bath in the present invention, in order to activate the surface of the tin-based plated steel sheet,
The surface activation treatment is preferably carried out by cathodic electrolysis or immersion treatment in a weakly alkaline bath such as sodium carbonate or sodium bicarbonate.
また、電極遮弊板の材質については、塩化ビニル、ベー
クライトなど、絶縁性を有し、しかもクロム酸系の化学
処理液に耐えるものであれば、何でもよい、以下に本発
明装置の構成を説明する。The electrode shielding plate may be made of any material, such as vinyl chloride or Bakelite, as long as it has insulating properties and can withstand chromic acid-based chemical treatment solutions.The configuration of the device of the present invention will be explained below. do.
第１図は、本発明に用いる装置の１実施例である。第１
図において、錫系めっきを施された鋼帯１は上方より下
方に向って処理浴２中を進み、化学処理を受ける。鋼帯
ｌのラインスピードに変化が生じた時には、変化前の電
気量密度を保つよう電極４の巾より若干大きめに作った
遮弊板３を適当な移動装置５により鋼帯ｌの進行方向に
平行に移動させ、電極４の有効長さＬを適宜選定する。FIG. 1 shows one embodiment of the apparatus used in the present invention. 1st
In the figure, a tin-plated steel strip 1 advances through a treatment bath 2 from above to below and undergoes chemical treatment. When a change occurs in the line speed of the steel strip l, a shielding plate 3 made slightly larger than the width of the electrode 4 is moved in the traveling direction of the steel strip l by an appropriate moving device 5 so as to maintain the electric charge density before the change. The effective length L of the electrode 4 is appropriately selected by moving the electrode 4 in parallel.
ここに先に定義づけた電気量密度および電流密度は下記
（１）、 （２）式であられされる。The charge density and current density defined above are expressed by the following equations (1) and (2).
電流密度（ｃ／ｄｔｎ’） ＝
・・・（１）
電流密度（Ａ／、ｄｒｎ’）”−
・・・（２）
従ってラインスピードを何等かの事情で半減せざるを得
ない・状態におちいった時、電気量密度、電流密度をそ
れ以前の状態と同じ状態に保持するためには投入電流を
半分に減じ、有効電極長を遮弊板３を移動させ半分にす
ればよいことになる。Current density (c/dtn') = ... (1) Current density (A/, drn')" - (2) Therefore, the line speed must be halved for some reason. In order to keep the charge density and current density the same as before when the current has fallen, it is sufficient to reduce the input current by half and move the shielding plate 3 to halve the effective electrode length. .
次に１本発明を実施例につき具体的に説明する。Next, one embodiment of the present invention will be specifically explained using examples.
焼鈍、調質圧延された冷間圧延鋼帯に、脱脂、酸洗を施
したのち、ノ翫ロゲン浴により＃２５目付（片面当り２
．８ｇ／腸２）の錫めっきを行い、ひきつづいてＣｒｈ
３０ｇ／ＪＬ、 ）１２ ＳＯ４０，２ｇ／４、Ｎ
ａ２ ＳｉＦ ６１ ｇｅｌの処理浴を用いて、種々の
条件で化学処理を行った。After degreasing and pickling the cold-rolled steel strip that has been annealed and temper-rolled, it is heated to
．． 8g/intestine 2) of tin plating, followed by Crh
30g/JL, )12 SO40, 2g/4, N
Chemical treatments were performed under various conditions using a2 SiF 61 gel treatment bath.
ＯＸ
処理条件およびＣｒ、Ｃｒ 付着量を第１表にまとめ
て示す、第１表巾勤、１〜３の比較例１では、電極長が
一定であるため、Ｃｒ 量を増すために投入電流を増
すと、これに伴なってＣｒ 量も増加してしまう、こ
れに対し、動、４〜６の発明例１に示すように、投入電
流一定すなわち電気量密度一定で、電極長を短くして電
流密度を上昇させることによって、
Ｃｒ’析出効率を高める方法によれば、Ｃｒ’量のみを
増大させることが可−である。OX treatment conditions, Cr, and Cr deposition amount are summarized in Table 1. In Comparative Example 1 of Table 1 Width, 1 to 3, the electrode length is constant, so the applied current is changed to increase the Cr amount. When the amount of Cr increases, the amount of Cr also increases.In contrast, as shown in Invention Example 1 of Sections 4 to 6, when the input current is constant, that is, the charge density is constant, and the electrode length is shortened. According to the method of increasing the Cr' precipitation efficiency by increasing the current density, it is possible to increase only the amount of Cr'.
次に、第１表巾勤、７〜９の比較例２に示すように、電
極長一定で、電気量密度一定制御を行った場合、ライン
スピードの変化による電流密度変化により、Ｃｒ’、Ｃ
ｒｏＸの析出効率が変動し、これらの量を一定に保てな
い、ＮＯ，１０〜１２の発明例２では、ラインスピード
の変化に応じて電極長を変化させて、電気量密度、電流
密度を一定に制御することにより、ＣｒＭ、Ｃｒ０Ｘ析
出量はほぼ一定となっている。Next, as shown in Comparative Example 2 in Table 1, Width, 7 to 9, when the electrode length is constant and the electrical quantity density is constant control, the current density changes due to line speed changes, resulting in Cr', C
In the invention example 2 of NO, 10 to 12, where the deposition efficiency of roX fluctuates and these amounts cannot be kept constant, the electrode length is changed according to the change in line speed to increase the charge density and current density. By controlling the temperature to be constant, the amounts of CrM and Cr0X precipitated are almost constant.
なお、勤、４の発明例では、Ｃｒ’の析出量は１．１１
８１鳳２と少なめであるが、これは勤、１の比較例（Ｃ
ｒ０Ｘは適切な量だけ析出している）と対比させるため
、特に記述したものである。In addition, in the invention example of No. 4, the amount of Cr' precipitated was 1.11
81 Otori 2, which is a comparative example of Tsutomu and 1 (C
r0X is specifically described in order to contrast with the case where only an appropriate amount of r0X is precipitated).
第１図は、本発明の錫系めっき鋼板の化学処理装置の一
構成例の線図的斜視図である。
符合の説明
ｌ・・・・・・鋼板（ストリップ）、２・・・・・・処
理浴。
３・・・・・・遮弊板、４・・・・・・電極、５・・・
・・・移動装置＝５１４−
第 １ 図FIG. 1 is a diagrammatic perspective view of a configuration example of a chemical treatment apparatus for tin-based plated steel sheets according to the present invention. Explanation of symbols 1... Steel plate (strip), 2... Treatment bath. 3... Shielding plate, 4... Electrode, 5...
...Moving device = 514- Fig. 1
Claims (2)
陰極電解処理をするに当り、投入電流の密度と前記鋼帯
の単位面積当りに受ける電気量とを互いに独立して制御
することを特徴とする錫系めっき鋼帯の化学処理方法。(1) When cathodic electrolytically treating a tin-based plated steel strip using an anhydrous chromic acid-based treatment bath, the density of the applied current and the amount of electricity received per unit area of the steel strip are controlled independently from each other. A method for chemically treating tin-based plated steel strip.
陰極電解処理を施す装置において、前記処理浴内に設け
られた電極の前記鋼帯対向面に、前記鋼帯の進行方向に
移動可能な電気遮弊板を設けたことを特徴とする錫系め
っき鋼帯の化学処理装置。(2) In an apparatus for subjecting a tin-plated steel strip to cathodic electrolysis treatment using a chromic acid anhydride-based treatment bath, an electrode provided in the treatment bath is placed on the opposite surface of the steel strip in the traveling direction of the steel strip. A chemical processing device for tin-based plated steel strip, characterized by being equipped with a movable electrical shielding plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13364884A JPS6112895A (en) | 1984-06-28 | 1984-06-28 | Method and device for chemical treatment of tin plated steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13364884A JPS6112895A (en) | 1984-06-28 | 1984-06-28 | Method and device for chemical treatment of tin plated steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6112895A true JPS6112895A (en) | 1986-01-21 |
Family
ID=15109709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13364884A Pending JPS6112895A (en) | 1984-06-28 | 1984-06-28 | Method and device for chemical treatment of tin plated steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6112895A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5482337A (en) * | 1977-12-14 | 1979-06-30 | Nippon Light Metal Co | Treatment such as anodizing |
| JPS58113396A (en) * | 1981-12-28 | 1983-07-06 | Kawasaki Steel Corp | Preventing device for edge overcoating in radial cell type plating cell |
-
1984
- 1984-06-28 JP JP13364884A patent/JPS6112895A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5482337A (en) * | 1977-12-14 | 1979-06-30 | Nippon Light Metal Co | Treatment such as anodizing |
| JPS58113396A (en) * | 1981-12-28 | 1983-07-06 | Kawasaki Steel Corp | Preventing device for edge overcoating in radial cell type plating cell |
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