JPS63210294A - Backup roll for electrifying roll - Google Patents
Backup roll for electrifying rollInfo
- Publication number
- JPS63210294A JPS63210294A JP4276487A JP4276487A JPS63210294A JP S63210294 A JPS63210294 A JP S63210294A JP 4276487 A JP4276487 A JP 4276487A JP 4276487 A JP4276487 A JP 4276487A JP S63210294 A JPS63210294 A JP S63210294A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- roll
- rolls
- backup
- electrifying
- 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
- 238000009713 electroplating Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 35
- 239000010959 steel Substances 0.000 abstract description 35
- 238000007747 plating Methods 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 210000002287 horizontal cell Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、水平電気メッキの、通電ロールのバックアッ
プロール（以下バックアップロールと略称する）に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a backup roll (hereinafter abbreviated as backup roll) for a current-carrying roll for horizontal electroplating.
［従来の技術］
水平電気メッキで、横型セルを用いて鋼帯にメッキを施
す場合には、第２図に示す如く、鋼帯２を通電ロール３
と表面をゴム又は樹脂等で構成したバックアップロール
１とで挟み、通電ロールに鋼帯を接触させて移動せしめ
て、通電メッキを行う。この際バックアップロールｌは
、液切り、水切り機能を重視することから、ゴムまたは
樹脂系の弾性特性を重んじ、従来はゴム硬度（ＪＩＳ
Ｋ−７２１５）でせいぜい４０°までであった。[Prior Art] When plating a steel strip using a horizontal cell in horizontal electroplating, as shown in FIG.
The steel strip is sandwiched between a back-up roll 1 whose surface is made of rubber or resin, and the steel strip is brought into contact with the current-carrying roll and moved to carry out electrical plating. At this time, since the backup roll l emphasizes the liquid draining function, the elastic properties of rubber or resin are valued, and conventionally the backup roll l is based on the rubber hardness (JIS
K-7215), it was up to 40° at most.
ところが、この硬度レベルでは、鋼帯を介して接する通
電ロールの曲率半径に沿って、鋼帯をある接触中でもっ
て通電ロールに巻きつけることになり、ライン張力をう
けて通電ロールを離れたセル内で鋼帯は巾方向の反り（
以下０反りという）を生ずること−なる。However, at this hardness level, the steel strip is held in some contact and wound around the current-carrying roll along the radius of curvature of the current-carrying roll, which is in contact with the steel strip, and the cells leave the current-carrying roll under line tension. The steel strip warps in the width direction (
(hereinafter referred to as zero warpage).
鋼帯の上下にアノード電極（例えばメッキ金属）を近づ
けてメッキ液を介して電流を通すセル内では、鋼帯の形
状不良即ちＣ反りは、メッキ付着量の偏差につながり、
メッキ外観不良や最悪の場合は鋼帯と電極との接触・短
絡というトラブルが発生する。In a cell where anode electrodes (for example, plated metal) are placed close to the top and bottom of the steel strip and current is passed through the plating solution, poor shape of the steel strip, that is, C warpage, leads to deviations in the amount of plating deposited.
Problems may occur, such as poor plating appearance or, in the worst case, contact and short circuit between the steel strip and the electrode.
［発明が解決しようとする問題点］
本発明はこのような従来の不都合を除くために開発され
たもので、通電ロールへの鋼帯の巻きつけ長さを短かく
し、巻きつけモーメントを減らすことにより、通電ロー
ルを離れた位置での鋼帯のＣ反りを防止することを目的
とする。これによってセル内の鋼帯の挙動を安定させ、
メッキ付着量の偏差や電極との短絡といった欠点を解消
し、電気メツキ成品の品質安定と生産安定をはかるもの
である。[Problems to be Solved by the Invention] The present invention was developed to eliminate such conventional disadvantages, and aims to shorten the length of winding the steel strip around the current-carrying roll and reduce the winding moment. The purpose of this is to prevent C warping of the steel strip at a position away from the current-carrying roll. This stabilizes the behavior of the steel strip within the cell,
This eliminates defects such as deviations in the amount of plating deposited and short circuits with electrodes, and aims to stabilize the quality and production of electroplated products.
［問題点を解決するための手段、作用］本発明は、水平
電気メッキで、通電ロールに鋼帯を接触させて鋼帯を移
動せしめるバックアップロールにおいて、ロール表面硬
度をＩ（ＤＤ５０〜７０（ＪＩＳに一７２ｌ５）とした
バックアップロールである。[Means and effects for solving the problem] The present invention provides a backup roll that moves the steel strip by bringing it into contact with an energized roll during horizontal electroplating, and has a roll surface hardness of I (DD50 to 70 (JIS This is a backup role with 172l5).
第１図はＣ反り発生のメカニズムを示す図である。FIG. 1 is a diagram showing the mechanism of occurrence of C warpage.
下側のバックアップロール１からの圧下刃が大きくなり
、鋼帯２に降伏曲げモーメント以上のモーメントを与え
ると、第２図のように通電ロール３の間で鋼帯にＣ反り
５が発生する。Ｃ反りが発生すると、鋼帯２の上下には
電極４が近接して配されているため、前記の如き欠陥が
生ずる。When the rolling blade from the lower backup roll 1 becomes larger and applies a moment greater than the yield bending moment to the steel strip 2, a C warp 5 occurs in the steel strip between the energized rolls 3 as shown in FIG. When warping occurs, the above-described defects occur because the electrodes 4 are disposed close to each other above and below the steel strip 2.
鋼帯２の降伏曲げモーメントを減少させるには、通電ロ
ール３の大径化やバックアップロールの圧下刃の軽減な
どが考えられるが、他への影響を考慮すると得策ではな
く、必要な圧下刃のもとてバックアップロール１と鋼帯
２の接触巾（Ｑ２）を減らすべく、バックアップロール
１の硬度を上げることが得策である。従来ゴム材のバッ
クアップロールでは、ゴム硬度で最大９０″（ＪＩＳ
Ｋ−７２１５）＜らいのものが使用されているが、これ
では通常数ｋｇ／ｍｍにも及ぶバックアップロール１の
圧力を加えると、接触巾Ｑ２が１５〜２０ｍｍにもなり
、降伏曲げモーメント以上となる。In order to reduce the yield bending moment of the steel strip 2, it is possible to increase the diameter of the current-carrying roll 3 or reduce the number of rolling blades of the backup roll, but considering the impact on other parts, this is not a good idea, and the number of required rolling blades may be reduced. In order to reduce the contact width (Q2) between the backup roll 1 and the steel strip 2, it is a good idea to increase the hardness of the backup roll 1. Conventional rubber backup rolls have a rubber hardness of up to 90" (JIS
K-7215) is used, but when the pressure of the backup roll 1, which is usually several kg/mm, is applied, the contact width Q2 increases to 15 to 20 mm, which exceeds the yield bending moment. Become.
第３図は、接触巾Ｑ２とＣ反り量との関係を示す図であ
り、ロール間隔２５００ｍｍ、鋼帯１１１０００ｍｍ、
鋼帯厚み０．８ｍｍ、張力１５００ｋｇ、鋼帯圧下刃３
ｋｇ／ｍｍ、通電ロール直径３１０ｍｍ、バックアップ
ロール直径３００ｍｍ、ラインスピード１２０ｍ／分、
におけるテスト結果である。第３図はバックアップロー
ルの表面が各種材料の場合をプロットしているが、Ｑ２
が約１０ｍｍ以下では何れの材料の場合もＣ反りが０と
なる特性が明らかである。FIG. 3 is a diagram showing the relationship between the contact width Q2 and the amount of C warpage, and shows the relationship between the contact width Q2 and the amount of C warpage, where the roll spacing is 2500 mm, the steel strip is 111000 mm,
Steel strip thickness 0.8mm, tension 1500kg, steel strip reduction blade 3
kg/mm, energizing roll diameter 310mm, backup roll diameter 300mm, line speed 120m/min,
These are the test results. Figure 3 plots cases where the surface of the backup roll is made of various materials, but Q2
It is clear that the C warp is zero for all materials when the distance is about 10 mm or less.
次に本発明者等は、通常広く用いられている直径が約３
００ｍｍの通電ロールとバックアップロールで、バック
アップロールが金属製ロールの外側をライニングしたバ
ックアップロールで、そのライニング厚さが２０〜３０
ｍｍの場合は、バックアップロールの表面硬度をＨＤＤ
５０〜７０（ＪＩＳ Ｋ−７２１５）とす。Next, the present inventors discovered that the commonly used diameter is about 3
00mm energized roll and a backup roll, the backup roll is a backup roll that is lined on the outside of a metal roll, and the lining thickness is 20 to 30mm.
mm, the surface hardness of the backup roll is HDD
50 to 70 (JIS K-7215).
ると、接触巾Ｑ２は８ｍｍ以下となり、Ｃ反りは確実に
防止できるという知見を得た。As a result, the contact width Q2 was 8 mm or less, and it was found that C warping can be reliably prevented.
バックアップロールの構成としては、金属製ロールの表
面に例えば、ゴム、樹脂等をライニングしたもので、そ
の表面硬度を上記のごとく特定するものである。The backup roll is constructed by lining the surface of a metal roll with, for example, rubber or resin, and the surface hardness of the roll is specified as described above.
［実施例］ 次に本発明の実施例を比較例とともに挙げる。[Example] Next, examples of the present invention will be listed together with comparative examples.
第１表でロール間隔とは、鋼帯通板方向の通電ロール３
の配置間隔である。本実施例と比較例は、水平電気メッ
キ（亜鉛）ラインにおいて、一般に行われているごとく
、鋼帯と上下電極間へメッキ液を供給しつつメッキを施
した。バックアップロールは金属製ロールの表面をゴム
で構成したものである。尚第１表でバックアップロール
表面硬度は、ＨＤ Ｄ （ＪＩＳ Ｋ−７２１５）によ
る硬度を示す。In Table 1, the roll spacing refers to the number of energized rolls in the steel strip passing direction.
is the arrangement interval. In the present example and comparative example, plating was performed on a horizontal electroplating (zinc) line while supplying a plating solution between the steel strip and the upper and lower electrodes, as is generally done. The backup roll is a metal roll whose surface is made of rubber. In Table 1, the surface hardness of the backup roll indicates the hardness according to HDD (JIS K-7215).
第１表にみられる如く、実施例１〜４は、接触中Ｑ２は
６〜１０ｍｍであり、鋼帯のＣ反り量も小さいが、比較
例はバックアップロールの表面硬度が小さくＣ反り量も
大きい。As shown in Table 1, in Examples 1 to 4, Q2 during contact was 6 to 10 mm and the amount of C warp of the steel strip was small, but in the comparative example, the surface hardness of the backup roll was small and the amount of C warp was large. .
［発明の効果］
かくすることにより、鋼帯巾方向の反りがほとんどなく
なり、鋼帯巾方向において、鋼帯と電極との距離が均等
な間隔になり、メッキ付着量が均一になり、商品価値を
向上し、歩留も向上することができる。[Effects of the invention] By doing this, warping in the width direction of the steel strip is almost eliminated, the distance between the steel strip and the electrode becomes equal in the width direction of the steel strip, the amount of plating deposited is uniform, and the commercial value is increased. and yield can also be improved.
又鋼帯反りによる電極への接触も確実に回避でき、設備
の破損を防止することができる等の優れた効果が得られ
る。Further, contact with the electrode due to warpage of the steel strip can be reliably avoided, and excellent effects such as being able to prevent damage to equipment can be obtained.
第１図は、バックアップロールと鋼帯接触中を示す説明
図、第２図は、水平電気メツキラインにおける鋼帯巾方
向の反りを示す説明図、第３図は、バックアップロール
と鋼帯接触中と鋼帯巾方向の反り量との関係を示す説明
図である。
第１図
第２図Fig. 1 is an explanatory diagram showing the steel strip in contact with the backup roll, Fig. 2 is an explanatory diagram showing warping in the width direction of the steel strip in the horizontal electroplating line, and Fig. 3 is an explanatory diagram showing the steel strip in contact with the backup roll. It is an explanatory view showing the relationship with the amount of warpage in the width direction of the steel strip. Figure 1 Figure 2
Claims (1)
を移動せしめる通電ロールのバックアップロールにおい
て、ロール表面硬度をＨＤＤ５０〜７０（ＪＩＳＫ−７
２１５）とした通電ロールのバックアップロール。In horizontal electroplating, the roll surface hardness is HDD 50 to 70 (JISK-7
215) Backup roll for the current-carrying roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4276487A JPS63210294A (en) | 1987-02-27 | 1987-02-27 | Backup roll for electrifying roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4276487A JPS63210294A (en) | 1987-02-27 | 1987-02-27 | Backup roll for electrifying roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63210294A true JPS63210294A (en) | 1988-08-31 |
Family
ID=12645047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4276487A Pending JPS63210294A (en) | 1987-02-27 | 1987-02-27 | Backup roll for electrifying roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63210294A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0428896A (en) * | 1990-05-23 | 1992-01-31 | Nippon Steel Corp | Continuous electroplating method |
| JP2002053995A (en) * | 2000-08-07 | 2002-02-19 | Nkk Corp | Electroplating method for metallic strip |
-
1987
- 1987-02-27 JP JP4276487A patent/JPS63210294A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0428896A (en) * | 1990-05-23 | 1992-01-31 | Nippon Steel Corp | Continuous electroplating method |
| JP2002053995A (en) * | 2000-08-07 | 2002-02-19 | Nkk Corp | Electroplating method for metallic strip |
| JP4586247B2 (en) * | 2000-08-07 | 2010-11-24 | Ｊｆｅスチール株式会社 | Continuous electroplating method for steel strip |
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