JPS60128274A - Method and device for preventing generation of patterned scale in pickling of steel strip - Google Patents
Method and device for preventing generation of patterned scale in pickling of steel stripInfo
- Publication number
- JPS60128274A JPS60128274A JP23512783A JP23512783A JPS60128274A JP S60128274 A JPS60128274 A JP S60128274A JP 23512783 A JP23512783 A JP 23512783A JP 23512783 A JP23512783 A JP 23512783A JP S60128274 A JPS60128274 A JP S60128274A
- Authority
- JP
- Japan
- Prior art keywords
- pickling
- strip
- stainless steel
- steel strip
- copper strip
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
- C23G3/029—Associated apparatus, e.g. for pretreating or after-treating for removing the pickling fluid from the objects
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は銅帯、特に美麗な表面性状が要求されるステン
レス鋼帯を連続焼鈍酸洗ラインで処理した後にみられる
模葆状スケールを効果的に発生防止せしめる方法及び装
置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method and method for effectively preventing the formation of scales that appear after copper strips, especially stainless steel strips that require beautiful surface texture, are treated in a continuous annealing and pickling line. Regarding equipment.
従来、ステンレス鋼帯を対象とする連続焼鈍酸洗ライン
の酸洗セクションでは、一般にＨＮＯ８、Ｈ，Ｓｏ、な
どの数種類の酸洗液が使用されており、したがって、酸
洗槽も酸洗液の種類毎に複数配置し、更に各酸洗槽間に
は酸洗液の持場し及び持込みを防止するための装置を付
設している。Conventionally, several types of pickling liquids such as HNO8, H, So, etc. are generally used in the pickling section of a continuous annealing and pickling line for stainless steel strips, and therefore, the pickling tank is also A plurality of pickling tanks are arranged for each type, and a device is installed between each pickling tank to store the pickling liquid and prevent it from being brought in.
第１図に前記酸洗セクションの配置例を示す０図中、Ｓ
はステンレス鋼帯、１及び２は酸洗槽であって、例えば
、酸洗槽１には硫酸、酸洗槽２には硝酸と弗酸の混酸が
入っているｏ３ａ〜８ｆは各々リンガ−ロールであって
、銅帯表面の残留液を絞り取るためのものである。また
４ａ、＋ｂはブラシ洗浄機であり、銅帯表面のスケール
等を除去するとともに水スプレー（図示せず）により表
面を清浄にするものである０５はコールドスプレーリン
ズ槽、６はホットスプレーリンズ槽であり、前者は水、
後者は温水をスプレーすることによって銅帯表面の最終
洗浄を行い、ドライヤー７により乾燥する。Figure 1 shows an example of the arrangement of the pickling section.
is a stainless steel strip, 1 and 2 are pickling tanks, for example, pickling tank 1 contains sulfuric acid, pickling tank 2 contains a mixed acid of nitric acid and hydrofluoric acid, and o3a to 8f are ringer rolls, respectively. This is for squeezing out residual liquid on the surface of the copper strip. Further, 4a and +b are brush cleaning machines that remove scale etc. from the surface of the copper strip and clean the surface with water spray (not shown).05 is a cold spray rinse tank, and 6 is a hot spray rinse tank. and the former is water,
The latter performs a final cleaning of the surface of the copper strip by spraying hot water and drying with a dryer 7.
なお、８は各酸洗槽内のジンクロール、９はブラシロー
ル、１０はバックアップロールである。In addition, 8 is a zinc roll in each pickling tank, 9 is a brush roll, and 10 is a backup roll.
このような酸洗セクションの配置において、従来、次の
ような問題があった。Conventionally, in the arrangement of such a pickling section, there have been the following problems.
即ち、酸洗後の銅帯表面には薄褐色の不規則な模様が表
われ、冷間圧延後もこの模様が引き伸ばされた状態で残
り、ステンレス鋼の美麗さを損っていた。That is, a light brown irregular pattern appeared on the surface of the copper strip after pickling, and this pattern remained stretched even after cold rolling, detracting from the beauty of stainless steel.
本発明者等は、か−る問題点を解決することを目的とし
、て、以下の種々め実験を行った。The present inventors conducted the following various experiments with the aim of solving these problems.
まず、例えば、酸洗温度及び濃度を変更したり、ブラシ
洗浄機のスプレー量を増加させたり、リンガ−ロールの
押付力を変えたり、或いはジンクロールを上下させて銅
帯の酸洗液への浸漬長さを変えたり、などの実験を行っ
たが、いずれによっても効果はなかった。First, for example, you can change the pickling temperature and concentration, increase the spray amount of the brush washer, change the pressing force of the ringer roll, or move the zinc roll up and down to affect the pickling solution on the copper strip. We conducted experiments such as changing the immersion length, but none of them had any effect.
但し、その際、浸漬長さの変更実験において、表面模様
の表われ方に若干の有意差が認められたことから、その
原因を究明し、次のような知見を即ち、各ジンクロール
８と各リンガ−ロール８の間で表面模様が発生している
事実が判明した。However, in an experiment where the immersion length was changed, a slight significant difference in the appearance of the surface pattern was observed, so the cause was investigated and the following findings were made: It was found that a surface pattern was generated between each ringer roll 8.
この原因は、銅帯自身が酸洗液により顕熱をもっている
こと、また、銅帯はジンクロールとリンガ−ロールの間
で傾いているために、その表面に付着した酸洗液が下方
に落下し易くなっていること、更に大気に触れるため心
、大気中の酸素と酸洗液との相乗効果により銅帯表面が
酸比されること等によるものと考えられる。この点は、
特に酸洗液の落下しやすい銅帯端部に表面模様が表われ
やすいことからも首肯できる。The reason for this is that the copper strip itself has sensible heat due to the pickling solution, and because the copper strip is tilted between the zinc roll and ringer roll, the pickling solution adhering to its surface falls downward. This is thought to be due to the fact that the surface of the copper strip is exposed to the atmosphere, and the synergistic effect of the oxygen in the atmosphere and the pickling solution makes the surface of the copper strip more acidic. This point is
This can be supported by the fact that surface patterns tend to appear particularly at the ends of the copper strip where the pickling solution tends to fall.
そこで、本発明者等は、前記知見に基づき、表面模様が
発生するジンクロールとリンガ−ロールとの間で銅帯を
大気から遮断することにより、その発生を効果的に防止
し得ることを見い出し、本発明を完成したのである。Based on the above findings, the present inventors have discovered that by shielding the copper strip from the atmosphere between the zinc roll and ringer roll where surface patterns occur, it is possible to effectively prevent the occurrence of surface patterns. , completed the present invention.
以下に本発明を図示の実施例に基づいて詳述する０
第１図において、ステンレス銅帯に表面模様が発生する
箇所は、酸洗液が付着している調帯が通過するジンクロ
ールとリンガ−ロールとの間、即ち、第一酸洗槽の出口
側、後続酸洗槽の出入口（図示の場合、８と８ａ、ａｂ
とｓ、８と８０（Ｄ各間）であるから、その間に、例え
ばスプレー装ｍＡ 、 Ｂ 、 ０を設置する。スプレ
ーとしては酸洗液又は水を用いるが、水は酸洗槽内の酸
濃度を低下させるので、むしろ該酸洗槽内の酸洗液と同
一濃度の酸洗液が好ましく、この場合には該酸洗槽とス
プレー装置との間でポンプにより酸洗液を循環させるこ
とができる。また、スプレー装置は傾斜シテいる銅帯の
高い方の端部側を狙ってスプレーできるように設置する
のがより望ましい。The present invention will be described below in detail based on the illustrated embodiments. In Figure 1, the areas where surface patterns occur on the stainless copper strip are the zinc roll and ring ring through which the pickling solution is attached. - between the rolls, i.e. the outlet side of the first pickling tank, the entrance and exit of the subsequent pickling tank (in the case shown, 8 and 8a, ab
and s, 8 and 80 (between D), for example, spray devices mA, B, and 0 are installed between them. A pickling solution or water is used as a spray, but since water reduces the acid concentration in the pickling tank, it is preferable to use a pickling solution with the same concentration as the pickling solution in the pickling tank. A pump can circulate the pickling liquid between the pickling tank and the spray device. Moreover, it is more preferable that the spray device be installed so that it can spray toward the higher end of the sloping copper strip.
また、銅帯表面を大気から遮断する手段としては、本実
施例の如く酸洗液又は水のスプレーの他、非酸化性ガス
の吹付は或いは破包等々種々の態様が可能である。Further, as means for shielding the surface of the copper strip from the atmosphere, in addition to spraying pickling liquid or water as in this embodiment, various methods such as spraying non-oxidizing gas or breaking the package are possible.
次に、本実施例において具体的に行った試験例を示す。Next, a test example specifically conducted in this example will be shown.
５ＵＳ４８０，４１０のステンレス鋼帯（３，５１１Ｅ
ｔＸ １００．０１ｍＷ） （Ｄ ２００ ：ｌイｋ
Ｌ ”） イて、図示の酸洗装置を用い、酸洗液をスプ
レー液として、スプレー量ｏ、ａｍ８／ｎ、圧力０．５
ｋｇ／１１ｒ％” （１）条件ｒスプレーし、連続焼
鈍酸洗を行ったところ、表面模様の発生は全く認められ
ながった。5US480,410 stainless steel strip (3,511E
tX 100.01mW) (D 200 :lk
Using the pickling device shown in the figure, the pickling liquid is used as a spray liquid, the spray amount is o, am8/n, and the pressure is 0.5.
kg/11r%" (1) Condition r Spraying, continuous annealing and pickling were performed, and no surface pattern was observed at all.
以上説明したように、本発明によれば、従来、連続焼鈍
酸洗によりステンレス鋼帯の表面に表われていた不規則
な模様を皆無にすることができ、表面品質の向上に大き
く寄与するものである〇As explained above, according to the present invention, it is possible to completely eliminate the irregular patterns that conventionally appeared on the surface of stainless steel strips due to continuous annealing and pickling, which greatly contributes to improving the surface quality. It is〇
第１図は連続焼鈍酸洗ラインの酸洗セクションにおける
配置例を示す概略説明図である。
１．２・・・酸洗槽
、 ・、３ｆ・・・リンガ−ロール
４ａ 、 ４ｂ・・・ブラシ洗浄機
８・・・ジンクロール
Ａ、Ｂ、Ｏ・・・スプレー装置
Ｓ・・・ステンレス銅帯FIG. 1 is a schematic explanatory diagram showing an example of arrangement in a pickling section of a continuous annealing pickling line. 1.2... Pickling tank, 3f... Ringer rolls 4a, 4b... Brush cleaning machine 8... Zinc rolls A, B, O... Spray device S... Stainless copper band
Claims (1)
の複数個の酸洗槽を有する酸洗セクションにおいて、各
酸洗槽の出入口で該銅帯表面を大気から遮断することを
特徴とする鋼帯酸洗での模様状スケールの発生防止方法
０＆ 酸洗液又は水を銅帯にスプレーすることにより銅
帯表面を大気から遮断する特許請求の範囲１記載の方法
。 ＆ ステンレス鋼帯を対象とする連続焼鈍酸洗ラインに
おいて、該酸洗セクションを構成する各酸洗槽の出入口
に該銅帯表面を大気から遮断する装置を設けたことを特
徴とする鋼帯酸洗での模様状スケールの発生防止装置。[Claims] 1. In a pickling section having a plurality of pickling tanks in a continuous annealing pickling line for stainless steel copper strips, the surface of the copper strip is isolated from the atmosphere at the entrance and exit of each pickling tank. A method for preventing the occurrence of patterned scale during pickling of a steel strip, characterized in that: 0& The method according to claim 1, wherein the surface of the copper strip is isolated from the atmosphere by spraying pickling liquid or water onto the copper strip. A continuous annealing and pickling line for stainless steel strips, characterized in that a device is provided at the entrance and exit of each pickling tank constituting the pickling section to isolate the surface of the copper strip from the atmosphere. A device to prevent the formation of patterned scales during washing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23512783A JPS60128274A (en) | 1983-12-15 | 1983-12-15 | Method and device for preventing generation of patterned scale in pickling of steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23512783A JPS60128274A (en) | 1983-12-15 | 1983-12-15 | Method and device for preventing generation of patterned scale in pickling of steel strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60128274A true JPS60128274A (en) | 1985-07-09 |
Family
ID=16981449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23512783A Pending JPS60128274A (en) | 1983-12-15 | 1983-12-15 | Method and device for preventing generation of patterned scale in pickling of steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60128274A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT403931B (en) * | 1993-07-08 | 1998-06-25 | Andritz Patentverwaltung | METHOD AND DEVICE FOR TREATING TREATED STAINLESS STEEL PRODUCTS, ESPECIALLY TREATED STEEL C-STEEL WARMBAND |
| EP1035233A1 (en) * | 1999-03-05 | 2000-09-13 | Andritz-Patentverwaltungsgesellschaft m.b.H. | Continuous steel strip processing installation |
| EP3392381A4 (en) * | 2015-12-18 | 2019-01-16 | Posco | Pickling apparatus and pickling method |
-
1983
- 1983-12-15 JP JP23512783A patent/JPS60128274A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT403931B (en) * | 1993-07-08 | 1998-06-25 | Andritz Patentverwaltung | METHOD AND DEVICE FOR TREATING TREATED STAINLESS STEEL PRODUCTS, ESPECIALLY TREATED STEEL C-STEEL WARMBAND |
| EP1035233A1 (en) * | 1999-03-05 | 2000-09-13 | Andritz-Patentverwaltungsgesellschaft m.b.H. | Continuous steel strip processing installation |
| EP3392381A4 (en) * | 2015-12-18 | 2019-01-16 | Posco | Pickling apparatus and pickling method |
| US10704151B2 (en) | 2015-12-18 | 2020-07-07 | Posco | Pickling apparatus and pickling method |
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