JPS6256952B2 - - Google Patents
Info
- Publication number
- JPS6256952B2 JPS6256952B2 JP3287783A JP3287783A JPS6256952B2 JP S6256952 B2 JPS6256952 B2 JP S6256952B2 JP 3287783 A JP3287783 A JP 3287783A JP 3287783 A JP3287783 A JP 3287783A JP S6256952 B2 JPS6256952 B2 JP S6256952B2
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- pickling
- space
- hydrochloric acid
- discoloration
- 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.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 51
- 238000005554 pickling Methods 0.000 claims description 48
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 41
- 239000003517 fume Substances 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 6
- 238000004649 discoloration prevention Methods 0.000 claims description 4
- 238000002845 discoloration Methods 0.000 description 15
- 238000007664 blowing Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 241000221561 Ustilaginales Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000004063 acid-resistant material Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Description
【発明の詳細な説明】
本発明は、鋼板の酸洗ラインにおいて、酸洗槽
を出てからリンガーロールで絞つた後に発生する
塩酸ヒユームによる変色を防止する装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for preventing discoloration due to hydrochloric acid fume generated after exiting a pickling tank and squeezing with a ringer roll in a steel plate pickling line.
冷間圧延ラインあるいはメツキラインに鋼板を
供給するに先立つて鋼板表面に形成されたスケー
ルを除去するためにいわゆる酸洗を行う。一般に
酸洗には塩酸酸洗と硫酸酸洗とがあるが、塩酸酸
洗の場合スマツト（smut）の生成が少なく、仕
上げ面がきれいであるため、また酸洗中に形成さ
れる塩化鉄の溶解度が温度上昇に伴つて大きくな
り、このことが仕上げ面の美麗さを更に向上させ
るため、塩酸酸洗が通常採用されている。 Before a steel plate is supplied to a cold rolling line or a rolling line, so-called pickling is performed to remove scale formed on the surface of the steel plate. Generally, there are two types of pickling: hydrochloric acid pickling and sulfuric acid pickling, but hydrochloric acid pickling produces fewer smuts and has a clean finished surface. Hydrochloric acid pickling is commonly employed because the solubility increases with increasing temperature, which further improves the beauty of the finished surface.
しかしながら、塩酸酸洗の場合、塩酸ヒユーム
の発生は避けられず、酸洗後に酸洗槽をでて、リ
ンガーロールで絞つてからの乾燥工程において塩
酸ヒユームにより鋼板に変色が発生する。このよ
うな変色の発生する条件としては、ラインスピー
ドが大きく寄与しており、例えばラインスピード
が100〜50m／min以下になると発生する。かか
る変色の発生は鋼板の品質を著しく低下するた
め、多くの場合、酸洗後スリツトラインに送つて
変色除去後出荷しているのが現状である。 However, in the case of hydrochloric acid pickling, the generation of hydrochloric acid fumes is unavoidable, and discoloration occurs on the steel plate due to the hydrochloric acid fumes during the drying process after leaving the pickling tank and squeezing with a ringer roll. The line speed greatly contributes to the condition for such discoloration to occur, and for example, it occurs when the line speed is 100 to 50 m/min or less. Since the occurrence of such discoloration significantly deteriorates the quality of the steel sheet, in many cases the steel sheet is currently sent to a slitting line after pickling to remove the discoloration before being shipped.
したがつて、変色の発生に伴う歩留りの低下、
スリツト能力の低下、さらには操業コストの上昇
はさけられない。 Therefore, a decrease in yield due to the occurrence of discoloration,
A decrease in slitting capacity and an increase in operating costs are unavoidable.
現状ではかかる変色の発生については決定的防
止策はないといわれており、たまたま酸洗能率を
向上させる手段として採用されている酸洗槽の鋼
板出側に設けたループカーの採用によつて上記変
色が防止されることが報告されているにすぎな
い。しかしループカーは酸洗の能率向上を目的と
して設置されたものであつてそれ自体に必ずしも
変色防止の効果はなく、また既存の設備に上記ル
ープカーを採用するにはそのための改造費用が非
常に大きく、新しく酸洗ラインを設置する場合以
外は実際的な方策とは言えない。 At present, it is said that there is no definitive preventive measure against the occurrence of such discoloration, and the adoption of a loop car installed on the steel plate outlet side of the pickling tank, which is a means of improving pickling efficiency, has prevented the above discoloration. It has only been reported that this can be prevented. However, the loop car was installed for the purpose of improving the efficiency of pickling, and it does not necessarily have the effect of preventing discoloration by itself.Additionally, the cost of modifying existing equipment to use the loop car is extremely high. This is not a practical measure except when installing a new pickling line.
かくして、本発明の目的とするところは、上述
のような従来技術にみられた酸洗後の変色の発生
を防止する装置を提供することである。 Thus, it is an object of the present invention to provide an apparatus that prevents the occurrence of discoloration after pickling, which is seen in the prior art as described above.
ここに、本発明の発明者らは酸洗後の変色発生
が塩酸ヒユームと鋼板との反応にもとずくとの知
見により酸洗槽の鋼板出側に隣接して鋼板収容空
間を設け、これにより鋼板が酸洗槽をでてから直
ちに鋼板と塩酸ヒユームとの接触を断ち、また該
空間内を走行する鋼板の上方および下方からこれ
らの塩酸ヒユームを吸引するとともに、必要によ
り鋼板の上表面および／または下表面の適宜位置
にエアーブローを吹き付けることにより、鋼板の
乾燥を強制的におこなうことによつて、酸洗後の
変色発生が効果的に防止されることを見出して本
発明を完成したものである。 Based on the knowledge that the occurrence of discoloration after pickling is based on the reaction between hydrochloric acid fume and the steel plate, the inventors of the present invention provided a steel plate storage space adjacent to the steel plate outlet side of the pickling tank, and Immediately after the steel plate leaves the pickling tank, the contact between the steel plate and the hydrochloric acid fume is cut off, and the hydrochloric acid fume is sucked in from above and below the steel plate running in the space, and if necessary, the upper surface of the steel plate and The present invention was completed by discovering that discoloration after pickling can be effectively prevented by forcibly drying the steel plate by blowing air at appropriate positions on the lower surface. It is something.
本発明の要旨とするところは、酸洗槽の鋼板出
側に隣接して設けられ、該酸洗槽から出た鋼板を
一旦収容し、次いで酸洗系外へ送り出す酸洗鋼板
収容空間から成り、該空間入口に設けたリンガー
ロールとそれに続く少なくとも一対のロールとを
そなえ、該空間を前記酸洗槽の鋼板出側から遮断
するとともに該空間内を走行する鋼板の少なくと
も上方および下方に吸引ダクトを設けたことを特
徴とする、酸洗変色防止装置にある。 The gist of the present invention consists of a pickled steel plate storage space that is provided adjacent to the steel plate output side of a pickling tank, temporarily accommodates the steel plate discharged from the pickling tank, and then sends it out of the pickling system. , comprising a ringer roll provided at the entrance of the space and at least a pair of rolls following the ringer roll, blocking the space from the steel sheet outlet side of the pickling tank, and providing a suction duct at least above and below the steel sheet running in the space. A pickling discoloration prevention device is provided.
さらに、好適態様にあつては、本発明は、酸洗
槽の鋼板出側に隣接して設けられ、該酸洗槽から
出た鋼板を一旦収容し、次いで酸洗系外へ送り出
す酸洗鋼板収容空間から成り、該空間入口に設け
たリンガーロールとそれに続く少なくとも一対の
ロールとをそなえ、該空間を前記酸洗槽の鋼板出
側から遮断するとともに該空間内を走行する鋼板
の少なくとも上方および下方に吸引ダクトを設
け、さらに鋼板に対するエアブロー吹き付けノズ
ルを設けたことを特徴とする、酸洗変色防止装置
である。 Furthermore, in a preferred embodiment, the present invention provides a method for pickling steel plates that is provided adjacent to the steel plate output side of a pickling tank, which temporarily stores the steel plate discharged from the pickling tank, and then sends the steel plate out of the pickling system. The storage space includes a ringer roll provided at the entrance of the space and at least one pair of rolls following the ringer roll, which blocks the space from the steel plate outlet side of the pickling tank and at least above and above the steel plate running in the space. This pickling discoloration prevention device is characterized by having a suction duct provided below and further provided with an air blowing nozzle for the steel plate.
次に本発明を添付図面に関連させてさらに詳細
に説明する。 The invention will now be described in more detail in connection with the accompanying drawings.
添付図面は本発明にかかる酸洗変色防止装置の
模式的側面図であり、酸洗槽１をでた鋼板２は直
ちにリンガーロール３によつて酸洗液が絞られ、
後続の各対のロール４，５を経て、酸洗系外に取
り出される。酸洗槽１の鋼板出側の近傍にはダク
ト系６が設けられており、酸洗液面７からの塩酸
ヒユーム８は吸引ダクト９をへて系外に吸引され
ている。該吸引ダクトに近接し、前記鋼板出側に
隣接する位置に酸洗鋼板収容空間Ａが設けられ、
酸洗済みの鋼板は該鋼板収容空間内に収容されて
いる間に乾燥が強制的に行われる。該収容空間の
鋼板入側は酸洗槽雰囲気からは遮断されている。
すなわち、前記リンガーロール３の上部と下部に
は塩酸ヒユームの侵入防止のために遮蔽板１０と
エアカーテン１１が設置されており、さらに塩酸
ヒユームと鋼板との接触を確実に防止するために
後続の一連のロール４，５を該空間内に設け、好
ましくは各ロールの間に鋼板下部からのエアブロ
ー吹き付け用ノズル１２を設けて鋼板の強制的乾
燥を行うとともに、第２遮蔽板１３をも設置して
鋼板と塩酸ヒユームとの接触と可及的に完全に防
止している。これらの各リンガーロールを設けた
領域は上方および下方吸引ダクト１４，１５をそ
れぞれ設け、矢印で示すように上方、下方から残
留希薄塩酸ヒユームを吸引除去して速やかに鋼板
を乾燥させるとともに、塩酸ヒユームと鋼板との
反応を可及的に防止して酸洗変色を防止してい
る。鋼板の上表面に付着する塩酸ヒユームは鋼板
の走行中に容易に上方に吸引されるが、鋼板下側
のものは吸引除去が容易でないため、強制的にエ
アブローを吹き付けて、塩酸ヒユームの鋼板下表
面からの逃散を促進させている。なお、図示例で
はリンガーロール３以下３段のロールを設けてい
るが、前記収容空間の大きさおよびこれらのロー
ルの設置数については特に制限はない。また、エ
アブロー吹き付け用ノズルの設置数および位置に
ついては当業者であれば適宜決定できるものであ
る。 The attached drawing is a schematic side view of the pickling discoloration prevention device according to the present invention, in which the steel plate 2 leaving the pickling tank 1 is immediately squeezed out of the pickling liquid by a ringer roll 3.
It passes through each subsequent pair of rolls 4, 5 and is taken out of the pickling system. A duct system 6 is provided near the steel plate outlet side of the pickling tank 1, and hydrochloric acid fume 8 from the pickling liquid surface 7 is sucked out of the system through a suction duct 9. A pickled steel plate storage space A is provided in a position adjacent to the suction duct and adjacent to the steel plate outlet side,
The pickled steel plate is forcibly dried while being accommodated in the steel plate storage space. The steel plate entry side of the housing space is isolated from the pickling tank atmosphere.
That is, a shielding plate 10 and an air curtain 11 are installed at the upper and lower parts of the ringer roll 3 to prevent the hydrochloric acid fume from entering, and furthermore, in order to reliably prevent the hydrochloric acid fume from coming into contact with the steel plate, the following A series of rolls 4 and 5 are provided in the space, preferably between each roll an air blowing nozzle 12 is provided from below the steel sheet to forcibly dry the steel sheet, and a second shielding plate 13 is also installed. Contact between the steel plate and the hydrochloric acid fume is completely prevented as much as possible. Upper and lower suction ducts 14 and 15 are provided in the area where each of these ringer rolls are provided, and as shown by the arrows, residual dilute hydrochloric acid fume is suctioned and removed from above and below to quickly dry the steel plate, and the hydrochloric acid fume is This prevents discoloration due to pickling by preventing the reaction between the steel plate and the steel plate as much as possible. Hydrochloric acid fume adhering to the upper surface of the steel plate is easily sucked upward while the steel plate is running, but it is not easy to remove the hydrochloric acid fume from the bottom of the steel plate. It promotes escape from the surface. In the illustrated example, three stages of ringer rolls or less are provided, but there are no particular limitations on the size of the accommodation space and the number of these rolls. Further, the number and position of the air blow nozzles can be appropriately determined by those skilled in the art.
ダンパー１６は鋼板の乾燥工程の領域が酸洗液
面領域に比較して過度に負圧にならないように両
領域の圧力を調整するためのものである。 The damper 16 is used to adjust the pressure in both regions so that the pressure in the region where the steel plate is dried does not become excessively negative compared to the pickling liquid surface region.
なお、本発明にかかる装置全体は塩酸ヒユーム
を主体にした腐食性の雰囲気にさらされることか
ら、各構成部材を耐酸、耐熱材（例えば、
FRP、ゴムライニング材）で製作するのが好ま
しい。 Since the entire device according to the present invention is exposed to a corrosive atmosphere mainly composed of hydrochloric acid fume, each component is made of acid-resistant and heat-resistant materials (for example,
It is preferable to manufacture it with FRP, rubber lining material).
かくして、本発明に係る装置によれば、酸洗後
の変色発生を完全に防止できた。また、ライン停
止中でも、10分間以内のライン停止であれば何等
問題はなかつた。なお、通常のコイル分割時また
はトリマー段取替時または入側溶接待ち等の待ち
時間は２分以内であるため、これらによる変色発
生は何等生じなかつた。 Thus, according to the apparatus according to the present invention, the occurrence of discoloration after pickling could be completely prevented. Also, even when the line was stopped, there was no problem as long as the line was stopped for less than 10 minutes. Note that the waiting time for normal coil splitting, trimmer setup change, entry side welding, etc. is within 2 minutes, so no discoloration occurred due to these.
添付図面は本発明に係る装置の模式的側面図で
ある。
１……酸洗槽、２……鋼板、３……リンガーロ
ール、８……塩酸ヒユーム、１０……遮蔽板、１
１……エアカーテン、１４……上方吸引ダクト、
１５……下方吸引ダクト、１６……ダンパー。
The accompanying drawing is a schematic side view of the device according to the invention. 1... Pickling tank, 2... Steel plate, 3... Ringer roll, 8... Hydrochloric acid hume, 10... Shielding plate, 1
1...Air curtain, 14...Upper suction duct,
15...Downward suction duct, 16...Damper.
Claims (1)
洗槽から出た鋼板を一旦収容し、次いで酸洗系外
へ送り出す酸洗鋼板収容空間から成り、該空間入
口に設けたリンガーロールとそれに続く少なくと
も一対のロールとをそなえ、該空間を前記酸洗槽
の鋼板出側から遮断するとともに該空間内を走行
する鋼板の少なくとも上方および下方に塩酸ヒユ
ームの吸引ダクトを設けたことを特徴とする、酸
洗変色防止装置。1 Consists of a pickling steel plate storage space that is provided adjacent to the steel plate exit side of the pickling tank and that temporarily stores the steel plate that comes out of the pickling tank and then sends it out of the pickling system, and a ringer installed at the entrance of the space. A roll and at least a pair of rolls following the roll are provided, the space is isolated from the steel plate outlet side of the pickling tank, and a hydrochloric acid fume suction duct is provided at least above and below the steel plate running within the space. Features: Pickling discoloration prevention device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3287783A JPS59159990A (en) | 1983-03-02 | 1983-03-02 | Device for preventing discoloration by pickling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3287783A JPS59159990A (en) | 1983-03-02 | 1983-03-02 | Device for preventing discoloration by pickling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59159990A JPS59159990A (en) | 1984-09-10 |
| JPS6256952B2 true JPS6256952B2 (en) | 1987-11-27 |
Family
ID=12371104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3287783A Granted JPS59159990A (en) | 1983-03-02 | 1983-03-02 | Device for preventing discoloration by pickling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59159990A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008017152B4 (en) * | 2008-04-03 | 2023-02-23 | Vitesco Technologies GmbH | Method for producing an electrical and/or mechanical connection between a printed circuit board and a contact partner, and composite system |
-
1983
- 1983-03-02 JP JP3287783A patent/JPS59159990A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59159990A (en) | 1984-09-10 |
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