JPH02270978A - Continuous pickling treatment of steel sheet - Google Patents
Continuous pickling treatment of steel sheetInfo
- Publication number
- JPH02270978A JPH02270978A JP9398289A JP9398289A JPH02270978A JP H02270978 A JPH02270978 A JP H02270978A JP 9398289 A JP9398289 A JP 9398289A JP 9398289 A JP9398289 A JP 9398289A JP H02270978 A JPH02270978 A JP H02270978A
- Authority
- JP
- Japan
- Prior art keywords
- pickling
- acid
- steel sheet
- steel plate
- tank
- 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 69
- 239000010959 steel Substances 0.000 title claims abstract description 69
- 238000005554 pickling Methods 0.000 title claims abstract description 67
- 239000002253 acid Substances 0.000 claims abstract description 44
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 6
- 235000021110 pickles Nutrition 0.000 claims 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 16
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 12
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 13
- 230000007423 decrease Effects 0.000 description 6
- 238000001035 drying Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 241000269821 Scombridae Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000020640 mackerel Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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
-
- 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
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】
（産業上の利用分野）
本発明は、鋼板の連続酸洗処理方法に関し、詳細には熱
間圧延ｗ４板等の表面酸化スケールの除去等に通用する
鋼板の連続酸洗処理方法に関する６（従来の技術）
熱間圧延鋼板は、冷延などを行うに際し脱スケールのた
め酸洗処理が行われる。又、スケールがなくでも、表面
粗度調整等のために鋼板の酸洗処理が行われる場合もあ
る。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a continuous pickling treatment method for steel plates, and more particularly, the present invention relates to a method for continuous pickling treatment of steel plates, and more specifically, a method for continuous pickling treatment of steel plates, which is used for removing surface oxidation scale of hot-rolled W4 plates, etc. 6. Related to washing treatment method (prior art) Hot rolled steel sheets are subjected to pickling treatment for descaling when performing cold rolling or the like. Further, even if there is no scale, a steel plate may be subjected to pickling treatment to adjust the surface roughness or the like.
従来、かかる鋼板酸洗処理は、バッチ方式の酸洗処理方
法で行われることもあるが、これに比較して生産性が優
れている連続酸洗処理方法が採用される場合が多い。Conventionally, such steel sheet pickling treatment is sometimes carried out by a batch pickling method, but in many cases a continuous pickling method is used, which has superior productivity compared to this method.
上記連続酸洗処理方法は、鋼板を走行させて酸洗槽に導
き、該槽内の酸洗液の中に順次浸漬して酸洗し、第３図
に示す如く第１酸絞りロール（２）間を通過させ、更に
第２酸絞りロール（３）間を通過させて鋼１（６）土酸
洗液を絞り取り、水洗し、乾燥するものである。In the above continuous pickling treatment method, a steel plate is run and led to a pickling tank, and the steel plate is sequentially immersed in the pickling solution in the tank for pickling, and as shown in FIG. ) and then through the second acid squeezing rolls (3) to squeeze out the steel 1 (6) soil pickling solution, wash it with water, and dry it.
上記連続酸洗処理方法において、酸洗槽は多くの場合複
槽式である。酸洗槽内の酸洗液は室温以上であり、例え
ば８０℃に保持されている。酸洗液絞り取り後の水洗は
リンス装置（４）を使用して行われる。第１酸絞りロー
ル（２）は最終の酸洗槽（１）のすぐ後に配されている
。尚、第３図において（７）は樋を示すものである。In the continuous pickling treatment method described above, the pickling tank is often a double tank type. The pickling liquid in the pickling tank is kept at room temperature or higher, for example, 80°C. Washing with water after squeezing out the pickling liquid is performed using a rinsing device (4). The first acid squeezing roll (2) is placed immediately after the final pickling tank (1). In addition, in FIG. 3, (7) indicates a gutter.
鋼板（６）の走行速度は、通常１５０〜２００ｍ／分で
あるが、最初の酸洗槽の前に配された入側設備または乾
燥設備の後に配された出側設備の処理能力が低下した場
合には、それに対応して鋼板（６）の走行速度を低下さ
せて酸洗処理が行われる。The running speed of the steel plate (6) is usually 150 to 200 m/min, but the processing capacity of the inlet equipment placed before the first pickling tank or the outlet equipment placed after the drying equipment has decreased. In this case, the pickling treatment is performed by reducing the traveling speed of the steel plate (6) accordingly.
（発明が解決しようとする課題）
ところが、前記従来の連続酸洗処理方法は、鋼板の走行
速度を低下させた際、本処理で得られる鋼板は表間の端
部に帯状の請が生成したものになることがあり、該帯状
錆は鋼板走行速度が低い程生成し易く、特に鋼板走行速
度が７０謹／分以下に低下すると、該帯状錆の発生率が
極めて高くなるという問題点がある。かかる帯状鯖が生
じた鋼板は不良品となるので、上記問題点は酸洗処理鋼
板の歩留低下を招くものであり、深刻な問題点である上
記帯状錆発生の原因に関し検討したところ、鋼板（６）
の走行速度が低下すると、第１酸絞りロール（２）及び
第２酸絞りロール（３）の端部に、結晶状の塩化鉄およ
び酸化鉄が生成し、これらが走行鋼板（６）に転写され
るためである事が確認された。(Problem to be Solved by the Invention) However, in the conventional continuous pickling treatment method, when the traveling speed of the steel plate is reduced, the steel plate obtained by this treatment has a band-like crack formed at the edge between the surfaces. The band-shaped rust is more likely to form as the steel plate running speed is lower, and there is a problem that the occurrence rate of the band-shaped rust becomes extremely high when the steel plate running speed decreases to 70 min/min or less. . Steel plates with such band-like rust formed are defective products, so the above problem causes a decrease in the yield of pickled steel sheets.When we investigated the cause of the above-mentioned band-like rust, which is a serious problem, we found that the steel plate (6)
When the traveling speed of the steel plate decreases, crystalline iron chloride and iron oxide are generated at the ends of the first acid squeezing roll (2) and the second acid squeezing roll (3), and these are transferred to the running steel plate (6). It was confirmed that the purpose was to be
即ち、鋼板（６）の走行速度が高い場合は、酸洗液浸漬
後の第１酸絞りロール（２）に導入される鋼板はは比較
的多量の液で濡れているので、第１酸絞りロール（２）
間通過の際に該ロール（２）上に多量の液が移動し、そ
のためロール（２）表面全体が液体で濡れた状態に保た
れる。これに対し、鋼板（６）の走行速度が低い場合は
、第１酸絞りロール（２）に導入される鋼板上の液量が
少ないので、ロール（２）に移動する液量が少なく、ロ
ール（２）は濡れの程度が減少して半乾きの状態となり
、ロール（２）端部には乾燥部が出現する。かかるロー
ル（２）端部では塩化鉄が濃縮・乾燥され、結晶として
付着する。該結晶状態の塩化鉄は大気中酸素により酸化
され、一部は酸化鉄に変化する。その後鋼板（６）の蛇
行等により、鋼板（６）が前記の如きローノＱ （２）
端部と接触すると、前記塩化鉄の結晶および酸化鉄が鋼
板表面に押し付けられ、転写される。第１酸絞りロール
（２）通過後、該転写物はさらに酸化され、強固なもの
になるので、後工程の水洗によっても最早洗い流し得す
、帯状の錆として残留する。尚、第２酸絞りロール（３
）においても、上記第１酸絞りロール（２）と同様の現
象が生じ、結晶状の塩化鉄および酸化鉄が生成され、鋼
板に転写されるが、鯖としての残留の程度は小さい。That is, when the running speed of the steel plate (6) is high, the steel plate introduced into the first acid squeezing roll (2) after being immersed in the pickling liquid is wetted with a relatively large amount of liquid, so the first acid squeezing roll (2) Roll (2)
During the passage, a large amount of liquid is transferred onto the roll (2), so that the entire surface of the roll (2) remains wet with liquid. On the other hand, when the running speed of the steel plate (6) is low, the amount of liquid on the steel plate introduced into the first acid squeezing roll (2) is small, so the amount of liquid transferred to the roll (2) is small, and the amount of liquid transferred to the first acid squeezing roll (2) is small. In (2), the degree of wetting decreases and becomes a semi-dry state, and a dry part appears at the end of the roll (2). At the end of the roll (2), iron chloride is concentrated and dried and deposited as crystals. The iron chloride in the crystalline state is oxidized by oxygen in the atmosphere, and a part of it changes into iron oxide. After that, due to the meandering of the steel plate (6), the steel plate (6) becomes like the above-mentioned Rono Q (2).
Upon contact with the edge, the iron chloride crystals and iron oxide are pressed onto the steel plate surface and transferred. After passing through the first acid squeezing roll (2), the transferred material is further oxidized and becomes strong, so that it remains as a band-shaped rust that can no longer be washed away by water washing in the subsequent step. In addition, the second acid squeezing roll (3
), the same phenomenon as in the first acid squeezing roll (2) occurs, and crystalline iron chloride and iron oxide are produced and transferred to the steel plate, but the degree of remaining as mackerel is small.
本発明はこの様な事情に着目してなされたものであって
、その目的は従来のものがもつ以上のような問題点を解
消し、鋼板を連続酸洗処理するに際し、鋼板走行速度が
低下した場合でも、前記の如き鋼板の帯状鯖発生を防止
し得る鋼板の連続酸洗処理方法を提供しようとするもの
である。The present invention has been made with attention to these circumstances, and its purpose is to solve the above-mentioned problems of the conventional method, and to solve the problem of reducing the running speed of the steel plate during continuous pickling treatment of the steel plate. The object of the present invention is to provide a continuous pickling treatment method for a steel plate that can prevent the occurrence of band-like mackerel on the steel plate even in such cases.
（課題を解決するための手段）
上記の目的を達成するために、本発明は次のような構成
としている。(Means for Solving the Problems) In order to achieve the above object, the present invention has the following configuration.
即ち、本発明に係る鋼板の連続酸洗処理方法は、鋼板を
走行させて酸洗槽に導き、該槽内の酸洗液の中に順次浸
漬して酸洗し、第１酸絞りロール間を通過させ、更に第
２酸絞りロール間を通過させて鋼板上酸洗液を絞り取り
、水洗し、乾燥する鋼板の連続酸洗処理方法であって、
前記酸絞りロールの中の少なくとも第１酸絞りロールを
塩酸で洗浄することを特徴とする鋼板の連続酸洗処理方
法である。That is, in the continuous pickling treatment method for steel plates according to the present invention, the steel plates are run and guided into a pickling tank, sequentially immersed in the pickling solution in the tank for pickling, and then passed between the first pickling rolls. A continuous pickling treatment method for a steel plate, in which the pickling solution is squeezed out on the steel plate by passing through a second acid squeezing roll, washing with water, and drying,
This is a continuous pickling treatment method for a steel plate, characterized in that at least a first acid squeezing roll among the acid squeezing rolls is washed with hydrochloric acid.
（作 用）
本発明に係る鋼板の連続酸洗処理方法は、以上説明した
ように、鋼板走行速度が低下した際に、酸絞りロールの
中の少なくとも第１酸絞りロールを塩酸で洗浄するよう
にしているので、第１酸絞りロール端部に結晶状塩化鉄
および酸化鉄が生成し難くなり、又、たとえそれらが生
成してもすぐに除去し得るようになる。従って、第１酸
絞りロールでの転写物による帯状錆発生は起こらなくな
る。(Function) As explained above, the continuous pickling treatment method for a steel plate according to the present invention cleans at least the first acid squeezing roll of the acid squeezing rolls with hydrochloric acid when the steel plate running speed decreases. This makes it difficult for crystalline iron chloride and iron oxide to form at the end of the first acid squeezing roll, and even if they do form, they can be removed immediately. Therefore, band-like rust due to the transfer material on the first acid squeezing roll does not occur.
又、第１酸絞りロールを洗浄する塩酸は、第１酸絞りロ
ールから走行鋼板上に移動し、更に第２酸絞りロール表
面へも移動し得る。このとき洗浄用塩酸を比較的多量に
使用すると、第２酸絞りロールの全面を塩酸で洗浄し得
る。故に、第２酸絞りロール端部での結晶状塩化鉄およ
び酸化鉄の生成も起こり難くなるか、もしくは除去し得
るようになる。従って、第２酸絞りロールでの帯状請発
生も起こらないようにできる。尚、第２酸絞りロールに
おいても、第１酸絞りロールの場合と同様、塩酸で洗浄
することが望ましい。このようにすると、帯状請発生を
より確実に防止し得るようになるからである。Furthermore, the hydrochloric acid for cleaning the first acid squeezing roll moves from the first acid squeezing roll onto the traveling steel plate, and can also move to the surface of the second acid squeezing roll. If a relatively large amount of cleaning hydrochloric acid is used at this time, the entire surface of the second acid squeezing roll can be cleaned with hydrochloric acid. Therefore, the formation of crystalline iron chloride and iron oxide at the end of the second acid squeezing roll is also less likely to occur or can be removed. Therefore, it is possible to prevent the occurrence of band-shaped wrinkles at the second acid squeezing roll. Incidentally, it is desirable that the second acid squeezing roll is also washed with hydrochloric acid as in the case of the first acid squeezing roll. This is because by doing so, it becomes possible to more reliably prevent the occurrence of band-like curls.
前記塩酸での洗浄は、塩酸を酸絞りロールに吹きつけて
行う事が望ましい。このようにすると、酸絞りロール端
部で結晶状塩化鉄および酸化鉄がたとえ生成したとして
も、それらが沈着する前に除去し易いようになるからで
ある。The cleaning with hydrochloric acid is preferably carried out by spraying hydrochloric acid onto the acid squeezing roll. This is because even if crystalline iron chloride and iron oxide are formed at the end of the acid squeezing roll, they can be easily removed before they are deposited.
前記洗浄用塩酸としては、酸洗槽内の酸洗液を導いて使
用するとよい、別途準備する必要がなくて簡便であるか
らである。As the cleaning hydrochloric acid, it is preferable to use the pickling solution in the pickling tank, because it is simple and does not require separate preparation.
尚、前記帯状請発生は鋼板走行速度が７０ｍ／＋ｗｉｎ
以下に低下した際に起こり易いので、特にかかる走行速
度になったときに、塩酸でので洗浄を行うようにする事
が経済性の観点から望ましい。In addition, the steel plate running speed is 70 m/+win for the above-mentioned belt-shaped belt generation.
From an economic standpoint, it is desirable to perform cleaning with hydrochloric acid, especially when the running speed reaches such a speed.
（実施例） 本発明の実施例を以下に説明する。(Example) Examples of the present invention will be described below.
災隻且上
厚み： ２．５＋ｍ＋ｍ 、板幅： １０００ｍｍの熱
延鋼板について、脱スケールを目的とする連続酸洗処理
を実施した。Continuous pickling treatment for the purpose of descaling was carried out on a hot-rolled steel plate having a thickness of 2.5+m+m and a width of 1000 mm.
第１図に実施例１に係る装置および酸洗処理状況の概要
図を示す。その要部の上面図を第２図に示す。第１〜２
図において、（１）は酸洗槽の一部であり、酸洗槽（１
）の後部（鋼板出口側）に第１酸絞りロール（２）、第
２酸絞りロール（３）、水洗のためのリンス装置（４）
及び乾燥器（図示していない）がこの順に配されている
。酸洗液には、濃度＝１５χ、温度：８０”Ｃに調整さ
れた塩酸を用いた。尚、樋（７）は、点線で図示する如
く酸洗槽（１）から遠ざかるに伴い高さが低くなるよう
に配置することもでき、このようにした場合には樋（７
）上に落下した液は落下液回収タンク（図示していない
）に入ることになる。FIG. 1 shows a schematic diagram of the apparatus and the pickling process according to Example 1. A top view of the main parts is shown in Fig. 2. 1st to 2nd
In the figure, (1) is a part of the pickling tank, and (1) is a part of the pickling tank.
) At the rear (on the steel plate exit side) are a first acid squeezing roll (2), a second acid squeezing roll (3), and a rinsing device (4) for washing with water.
and a dryer (not shown) are arranged in this order. Hydrochloric acid adjusted to a concentration of 15χ and a temperature of 80"C was used as the pickling solution. The height of the gutter (7) increases as it moves away from the pickling tank (1) as shown by the dotted line. It can also be placed lower, in which case the gutter (7
) will enter a fallen liquid collection tank (not shown).
上記第１酸絞りロール（２）の上方に、該ロール（２）
への塩酸吹きつけ用ノズル（５）を設けた。ノズル（５
）は弁を介して配管により、塩酸タンクと接続されてい
る。液弁は、鋼板走行速度に対応して液弁を開閉する制
９Ｂ装宜と電気的に接続されており、鋼板走行速度が７
０請／■ｉｎ′以下になった時に、自動的に弁が開いて
塩酸が吹きつけられ、７０ｍ／ｗｉｎ超になると自動的
に弁が閉まるように設定した。Above the first acid squeezing roll (2), the roll (2)
A nozzle (5) for spraying hydrochloric acid was provided. Nozzle (5
) is connected to the hydrochloric acid tank by piping through a valve. The liquid valve is electrically connected to a control device 9B that opens and closes the liquid valve in accordance with the steel plate running speed.
The valve was set to automatically open and hydrochloric acid was sprayed when the temperature fell below 0m/in', and to automatically close when it exceeded 70m/win'.
鋼板（６）を連続走行させながら、酸洗槽（１）内の酸
洗液に順次浸漬して酸洗し、第１酸絞りロール（２）間
を通過させ、更に第２酸絞りロール（３）間を通過させ
て鋼板上酸洗液を絞り取り、リンス装置（４）で水洗し
、乾燥器で乾燥する事により、鋼板（６）の連続酸洗処
理を行った。While continuously running the steel plate (6), the steel plate (6) is sequentially immersed in the pickling solution in the pickling tank (1) for pickling, passed between the first acid squeezing rolls (2), and then passed through the second acid squeezing roll (2). 3) A continuous pickling treatment was performed on the steel plate (6) by passing the pickling liquid through the steel plate, rinsing it with water in a rinsing device (4), and drying it in a drier.
その結果、上記連続処理の途中、鋼板走行速度が度々７
０ｍ／ｓｉｎ以下になったが、その都度ノズル（５）よ
り塩酸が吹きつけられ、帯状錆発生は全く認められなか
った。As a result, during the above continuous treatment, the steel plate running speed often increased to 7.
Although the speed was below 0 m/sin, hydrochloric acid was sprayed from the nozzle (5) each time, and no band-shaped rust was observed.
尚、ノズル（５）からの塩酸吹きつけを全く行わない場
合についても実施した。連続処理の途中、鋼板走行速度
が度々７０ｍ／ｗｉｎ以下になり、帯状錆の発生が認め
られた。The test was also carried out without any hydrochloric acid spraying from the nozzle (5). During the continuous treatment, the traveling speed of the steel plate frequently dropped below 70 m/win, and the occurrence of band-shaped rust was observed.
（発明の効果）
本発明に係る鋼板の連続酸洗処理方法によれば１．ｌ１
ＩＦｉを連続酸洗処理するに際し、鋼板走行速度が低下
した場合でも、鋼板の帯状錆発生を防止し得るようにな
る。従って、帯状錆発生にょる酸洗処理鋼板の歩留低下
を防止し得るようになる。(Effects of the Invention) According to the continuous pickling treatment method for steel plates according to the present invention: 1. l1
When continuously pickling IFi, even if the running speed of the steel plate is reduced, it becomes possible to prevent the occurrence of band-like rust on the steel plate. Therefore, it becomes possible to prevent a decrease in the yield of pickled steel sheets due to the occurrence of band-shaped rust.
第１図は実施例１に係る装置および酸洗処理状況を示す
概要図、第２図はその要部の上面図、第３図は従来の連
続酸洗処理方法に係る装置および酸洗処理状況を示す概
要図である。
（１）−酸洗槽の一部 （２）−第１酸絞りロール
（３）−第２酸絞りロール （４）−リンス装置（５）
−塩酸吹きつけ用ノズル （６）−綱板（７）−樋
特許出願人 株式会社 神戸製鋼所
代 理 人 弁理士 金丸 トFigure 1 is a schematic diagram showing the equipment and pickling process according to Example 1, Figure 2 is a top view of the main parts, and Figure 3 is the equipment and pickling process according to the conventional continuous pickling method. FIG. (1) - Part of the pickling tank (2) - First acid squeeze roll (3) - Second acid squeeze roll (4) - Rinse device (5)
- Hydrochloric acid spray nozzle (6) - Rope plate (7) - Gutter Patent applicant: Kobe Steel, Ltd. Agent Patent attorney: To Kanamaru
Claims (1)
の中に順次浸漬して酸洗し、第１酸絞りロール間を通過
させ、更に第２酸絞りロール間を通過させて鋼板上酸洗
液を絞り取り、水洗し、乾燥する鋼板の連続酸洗処理方
法であって、前記酸絞りロールの中の少なくとも第１酸
絞りロールを塩酸で洗浄することを特徴とする鋼板の連
続酸洗処理方法。(1) The steel plate is run and guided into a pickling tank, sequentially immersed in the pickling solution in the tank for pickling, passed between the first acid squeeze rolls, and then passed between the second pickle squeeze rolls. A continuous pickling treatment method for a steel plate in which the pickling solution is squeezed out on the steel plate by passing through the steel plate, washed with water, and dried, the method comprising washing at least a first acid squeezing roll among the acid squeezing rolls with hydrochloric acid. Continuous pickling treatment method for steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9398289A JPH02270978A (en) | 1989-04-13 | 1989-04-13 | Continuous pickling treatment of steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9398289A JPH02270978A (en) | 1989-04-13 | 1989-04-13 | Continuous pickling treatment of steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02270978A true JPH02270978A (en) | 1990-11-06 |
Family
ID=14097611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9398289A Pending JPH02270978A (en) | 1989-04-13 | 1989-04-13 | Continuous pickling treatment of steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02270978A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012025506A (en) * | 2010-07-21 | 2012-02-09 | Jfe Steel Corp | Method for passing steel plate in continuous treatment line and steel-plate carrying device |
| JP2021147652A (en) * | 2020-03-18 | 2021-09-27 | Ｊｆｅスチール株式会社 | Method for pickling metal plate and method for producing metal plate |
-
1989
- 1989-04-13 JP JP9398289A patent/JPH02270978A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012025506A (en) * | 2010-07-21 | 2012-02-09 | Jfe Steel Corp | Method for passing steel plate in continuous treatment line and steel-plate carrying device |
| JP2021147652A (en) * | 2020-03-18 | 2021-09-27 | Ｊｆｅスチール株式会社 | Method for pickling metal plate and method for producing metal plate |
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