JP2002249888A - Pickling equipment - Google Patents
Pickling equipmentInfo
- Publication number
- JP2002249888A JP2002249888A JP2001049336A JP2001049336A JP2002249888A JP 2002249888 A JP2002249888 A JP 2002249888A JP 2001049336 A JP2001049336 A JP 2001049336A JP 2001049336 A JP2001049336 A JP 2001049336A JP 2002249888 A JP2002249888 A JP 2002249888A
- Authority
- JP
- Japan
- Prior art keywords
- pickling
- accelerator
- concentration
- inhibitor
- steel sheet
- 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
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼板の脱スケール
を行うための酸洗設備に関する。The present invention relates to a pickling facility for descaling steel sheets.
【０００２】[0002]
【従来の技術】酸洗設備は、例えば特開平５−５９５７
８号公報などに記載されているように、酸洗液が収容さ
れた酸洗槽中を、上流側から下流側に向けて鋼板を移動
させることで、鋼板表面のスケールを除去する。上記酸
洗槽の酸洗液は下流側から槽内に補充されると共に、上
流側から当該酸洗液をオーバーフローさせることで、酸
洗槽中の酸洗液の酸濃度を、上流側から下流側に向けて
高くなるように設定している。2. Description of the Related Art Pickling equipment is disclosed, for example, in Japanese Patent Application Laid-Open No. 5-5957.
As described in Japanese Patent Publication No. 8 and the like, the scale on the steel sheet surface is removed by moving the steel sheet from the upstream side to the downstream side in the pickling tank containing the pickling solution. The pickling solution in the pickling tank is replenished into the tank from the downstream side, and the acid concentration of the pickling solution in the pickling tank is reduced from the upstream side to the downstream side by overflowing the pickling solution from the upstream side. It is set to be higher toward the side.
【０００３】更に、従来にあっては、脱スケールの向上
のために、上記酸洗液の補充と一緒に、酸洗槽の下流側
から連続的に添加剤の投入を行っている。添加剤中に
は、過酸洗による地鉄の腐食を防止する酸洗抑制剤と、
脱スケールを促進させる酸洗促進剤とを混合することが
多い。ここで、上記添加剤中の酸洗促進剤及び酸洗抑制
剤の配合比率は、対象とする鋼板などによって予め決定
された一定の比率に調整されている。Further, conventionally, in order to improve descaling, an additive is continuously supplied from the downstream side of the pickling tank together with replenishment of the pickling solution. Among the additives, a pickling inhibitor that prevents the corrosion of ground iron due to over pickling,
It is often mixed with a pickling accelerator which promotes descaling. Here, the mixing ratio of the pickling accelerator and the pickling inhibitor in the additive is adjusted to a predetermined ratio determined in advance depending on the target steel plate or the like.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
ような添加剤の供給方法では、酸洗槽中の酸洗液に含有
される酸洗促進剤と酸洗抑制剤との濃度比率が、上流か
ら下流に沿って等しくなっている。つまり、抑制が不要
な上流側の酸洗液中であっても、酸洗促進剤と酸洗抑制
剤の比率が同じであるために、添加剤の供給による脱ス
ケール効率が低い。However, in the above-described method for supplying an additive, the concentration ratio between the pickling accelerator and the pickling inhibitor contained in the pickling solution in the pickling tank is increased. From the same along the downstream. That is, even in the pickling solution on the upstream side where suppression is not required, the descaling efficiency due to the supply of the additive is low because the ratio of the pickling accelerator and the pickling inhibitor is the same.
【０００５】また、酸洗液中の酸洗促進剤自体の濃度勾
配は、酸洗液の濃度勾配と同様に、下流側が一番高く上
流に向けて低くなっている。つまり、脱スケールを行い
たい上流側での酸洗促進剤の濃度が低いことから、上流
側での脱スケール効率が低いばかりか、鋼板表面に地鉄
が露出する下流側での酸洗促進剤自体の濃度が高いこと
から、鋼板表面における地鉄の腐食が必要以上に行われ
るおそれがあり、歩留まり低下の原因となる。なお、脱
スケールが完了する酸洗槽内の位置は、変動する。The concentration gradient of the pickling accelerator itself in the pickling solution is the highest on the downstream side and lower toward the upstream, similarly to the concentration gradient of the pickling solution. In other words, since the concentration of the pickling accelerator on the upstream side where descaling is desired is low, not only the efficiency of descaling on the upstream side is low, but also the pickling accelerator on the downstream side where the steel sheet is exposed on the steel sheet surface. Since the concentration of the steel itself is high, there is a possibility that the corrosion of the base steel on the surface of the steel sheet may be performed more than necessary, which causes a decrease in yield. The position in the pickling tank where the descaling is completed varies.
【０００６】本発明は、上記のような問題点に着目して
なされたもので、脱スケールの効率が向上できると共
に、鋼板表面からの地鉄の腐食を抑えることが可能な酸
洗設備を提供することを特徴とする。The present invention has been made in view of the above-mentioned problems, and provides an acid pickling facility capable of improving the efficiency of descaling and suppressing the corrosion of ground iron from the surface of a steel sheet. It is characterized by doing.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に、本発明のうち請求項１に記載した発明は、酸洗液を
収容した酸洗槽中を上流側から下流側に向けて鋼板を移
動させることで当該鋼板表面の脱スケールを行うと共
に、上記酸洗槽中の酸洗液に、添加剤として酸洗促進剤
と酸洗抑制剤が供給される酸洗設備において、上記酸洗
液中の酸洗促進剤の濃度を、下流側から上流側に向けて
高くなるように設定することを特徴とするものである。Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention is directed to a steel plate in which a pickling tank containing a pickling liquid is directed from an upstream side to a downstream side. In the pickling equipment in which the pickling accelerator and the pickling inhibitor are supplied as additives to the pickling solution in the pickling tank, The concentration of the pickling accelerator in the liquid is set so as to increase from the downstream side toward the upstream side.
【０００８】次に、請求項２に記載した発明は、請求項
１に記載した構成に対し、上記酸洗液中の酸洗抑制剤の
濃度を、上流側から下流側に向けて高くなるように設定
することを特徴とするものである。次に、請求項３に記
載した発明は、酸洗液を収容した酸洗槽中を上流側から
下流側に向けて鋼板を移動させることで当該鋼板表面の
脱スケールを行うと共に、上記酸洗槽中の酸洗液に、添
加剤として酸洗促進剤と酸洗抑制剤が供給される酸洗設
備において、酸洗槽内への上記添加剤の供給位置を、鋼
板の移動方向に沿って複数箇所設け、上記各添加剤の供
給位置から供給される酸洗促進剤の濃度は、相対的に下
流側位置からよりも上流側位置からの方が高く、且つ、
上記各添加剤の供給位置から供給される酸洗抑制剤の濃
度は、相対的に上流側位置からよりも下流側位置からの
方が高いことを特徴とするものである。Next, according to the second aspect of the present invention, as compared with the first aspect, the concentration of the pickling inhibitor in the pickling solution is increased from the upstream side to the downstream side. Is set. Next, the invention described in claim 3 performs descaling of the surface of the steel sheet by moving the steel sheet from the upstream side to the downstream side in the pickling tank containing the pickling solution, and performs the pickling. In the pickling equipment in which the pickling accelerator and the pickling inhibitor are supplied as additives to the pickling liquid in the tank, the supply position of the additive into the pickling tank is set along the moving direction of the steel sheet. Provided at a plurality of locations, the concentration of the pickling accelerator supplied from the supply position of each additive is higher from the upstream position than from the relatively downstream position, and
The concentration of the pickling inhibitor supplied from the supply position of each additive is relatively higher at the downstream position than at the upstream position.
【０００９】[0009]
【発明の実施の形態】次に、本発明の実施形態について
図面を参照しつつ説明する。図１は、本実施形態の酸洗
設備を示す概要構成図である。すなわち、図１に示すよ
うに、ペイオフリール１から巻き戻された鋼板２が、酸
洗槽３内の酸洗液４に浸漬しながら図１中左側から右側
（上流側から下流側）に移動する間に表面の脱スケール
が行われる。続いて、酸洗槽３から出た鋼板２は、水槽
やスプレー装置などからなるリンス装置５によって酸洗
液４の除去が行われ、さらに、ドライヤ装置６で乾燥さ
れた後に再びリール７に巻き取られる。Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing the pickling equipment of the present embodiment. That is, as shown in FIG. 1, the steel sheet 2 unwound from the payoff reel 1 moves from the left side to the right side (upstream to downstream) in FIG. 1 while being immersed in the pickling liquid 4 in the pickling tank 3. While the surface is descaling. Subsequently, the steel sheet 2 coming out of the pickling tank 3 is subjected to removal of the pickling liquid 4 by a rinsing device 5 including a water tank and a spray device, and further dried by a drier device 6 and then wound around a reel 7 again. Taken.
【００１０】上記酸洗槽３内は、上流側から下流側に向
けて遮路８によって４つの室３Ａ〜３Ｄに分割されてい
る。その４つの室３Ａ〜３Ｄを、上流側から第１室３
Ａ、第２室３Ｂ、第３室３Ｃ、第４室３Ｄと呼ぶと、第
１室３Ａ及び第４室３Ｄには、それぞれ添加剤供給用の
注入管路９，１０が連通し、各注入管路９，１０を通じ
て添加剤を酸洗槽３内に供給可能となっている。なお、
第１室３Ａに連通する注入管路９を第１注入管路、第４
室３Ｄに連通する注入管路１０を第２注入管路と呼ぶ。
また、符号１１，１２は弁を示す。The interior of the pickling tank 3 is divided into four chambers 3A to 3D by a shield 8 from the upstream side to the downstream side. The four chambers 3A to 3D are connected to the first chamber 3 from the upstream side.
A, the second chamber 3B, the third chamber 3C, and the fourth chamber 3D are referred to as the first and third chambers 3A and 3D, respectively. The additives can be supplied into the pickling tank 3 through the pipes 9 and 10. In addition,
The injection line 9 communicating with the first chamber 3A is connected to the first injection line and the fourth injection line.
The injection line 10 communicating with the chamber 3D is called a second injection line.
Reference numerals 11 and 12 indicate valves.
【００１１】なお、図１中、１３は酸洗液４を補充する
ための補充用管路である。そして、第１室３Ａからオー
バーフローした酸洗液４を回収し、所要の処理を加える
と共に新たな酸洗液４を適宜加えた酸洗液４を上記補充
用管路１３から酸洗槽３内に供給する。上記添加剤中に
は、酸洗促進剤及び酸洗抑制剤が所定の配合比率で混合
されている。In FIG. 1, reference numeral 13 denotes a replenishing line for replenishing the pickling solution 4. Then, the pickling solution 4 overflowing from the first chamber 3A is recovered, and the pickling solution 4 to which necessary treatment is added and a new pickling solution 4 is appropriately added is taken from the replenishing line 13 into the pickling tank 3. To supply. In the above additives, a pickling accelerator and a pickling inhibitor are mixed in a predetermined mixing ratio.
【００１２】そして、本実施形態では、第１注入管路９
から供給される添加剤中の酸洗促進剤の濃度の方が、第
２注入管路１０から供給される添加剤中の酸洗促進剤の
濃度よりも高く、且つ、第１注入管路９から供給される
添加剤中の酸洗抑制剤の濃度の方が、第２注入管路１０
から供給される添加剤中の酸洗抑制剤の濃度よりも低く
なるように設定されている。In this embodiment, the first injection line 9
The concentration of the pickling accelerator in the additive supplied from the first injection line 9 is higher than the concentration of the pickling accelerator in the additive supplied from the second injection line 10. The concentration of the pickling inhibitor in the additive supplied from the second injection line 10
Is set so as to be lower than the concentration of the pickling inhibitor in the additive supplied from.
【００１３】例えば、対象とする鋼板２に対する添加剤
中の酸洗促進剤及び酸洗抑制剤が所定の配合比率につい
て、従来の酸洗抑制剤に対する酸洗促進剤の量（酸洗促
進剤／酸洗抑制剤）を１とすると、第１注入管路９では
酸洗抑制剤に対する酸洗促進剤の量を１．５など１より
も大きく設定し、且つ第２注入管路１０では酸洗抑制剤
に対する酸洗促進剤の量を０．７など１よりも小さく設
定する。For example, for a given mixing ratio of the pickling accelerator and the pickling inhibitor in the additive to the target steel sheet 2, the amount of the pickling accelerator to the conventional pickling inhibitor (pickling accelerator / Assuming that the pickling inhibitor is 1, the amount of the pickling accelerator with respect to the pickling inhibitor in the first injection line 9 is set to be larger than 1, such as 1.5, and the second injection line 10 is pickled. The amount of the pickling accelerator with respect to the inhibitor is set smaller than 1, such as 0.7.
【００１４】次に、上記設備における作用・効果等につ
いて説明する。本実施形態においては、酸洗促進剤がリ
ッチの添加剤を上流側から供給すると共に酸洗抑制剤が
リッチの添加剤を下流側から供給している。このため、
酸洗槽３内の酸洗液４に含まれる酸洗促進剤の濃度は、
図２中、符号Ａで示されるように、脱スケールを効率良
く行いたい上流側で高くなると共に、下流側に向けて低
くなって脱スケール速度を抑えたい下流側で低く設定さ
れる。Next, the operation and effect of the above equipment will be described. In the present embodiment, the pickling accelerator supplies the rich additive from the upstream side and the pickling inhibitor supplies the rich additive from the downstream side. For this reason,
The concentration of the pickling accelerator contained in the pickling solution 4 in the pickling tank 3 is as follows:
In FIG. 2, as indicated by reference numeral A, it is set to be higher on the upstream side where descaling is desired to be performed efficiently, and to be lowered toward the downstream side and lower on the downstream side where the descaling speed is to be suppressed.
【００１５】一方、酸洗槽３内の酸洗液４に含まれる酸
洗抑制剤の濃度は、図２中、符号Ｂで示されるように、
脱スケールを効率良く行いたい上流側で低くなると共
に、下流側に向けて高くなって脱スケール速度を抑えた
い下流側で高く設定される。このように、まだ、表面に
地鉄が露出してない上流側で酸洗促進剤の濃度が高く設
定されることで酸洗液の酸濃度が低くても効率良く脱ス
ケールが行われる結果、酸洗槽３の長さを従来よりも短
く設定したり、鋼板２の移動速度を従来よりも速く設定
したり、酸洗液４の酸の濃度を従来よりも低くしたり、
酸洗液４の温度を低くしても、要求される脱スケールを
行うことができる。On the other hand, the concentration of the pickling inhibitor contained in the pickling solution 4 in the pickling tank 3 is represented by the symbol B in FIG.
It is set low on the upstream side where descaling is desired to be performed efficiently, and is increased toward the downstream side and is set high on the downstream side where the descaling speed is desired to be suppressed. In this way, the concentration of the pickling accelerator is set high on the upstream side where the ground iron is not yet exposed on the surface, so that descaling is efficiently performed even when the acid concentration of the pickling solution is low, The length of the pickling tank 3 is set shorter than before, the moving speed of the steel plate 2 is set faster than before, the acid concentration of the pickling liquid 4 is made lower than before,
Even if the temperature of the pickling liquid 4 is lowered, the required descaling can be performed.
【００１６】また、脱スケールの処理が終わって鋼板２
表面の地鉄が露出する可能性がある、下流側にあって
は、酸洗促進剤の濃度が低く抑えられると共に酸洗抑制
剤の濃度が高くなっていることから、脱スケールの速度
が低くなり、地鉄が鋼板２表面に露出しても地鉄の腐食
を抑えることが可能となる。ここで、上記実施形態で
は、添加剤の供給箇所を上流側である第１室３Ａと下流
側である第４室３Ｄの２箇所に設定しているが、３箇所
以上設定してより細かく酸洗槽３内の酸洗液４に含有す
る酸洗促進剤と酸洗抑制剤の濃度を調整しても良い。Further, after the descaling process is completed,
On the downstream side where the surface iron may be exposed, the concentration of the pickling accelerator is kept low and the concentration of the pickling inhibitor is high, so the descaling speed is low. Therefore, even if the ground iron is exposed on the surface of the steel plate 2, the corrosion of the ground iron can be suppressed. Here, in the above-described embodiment, the supply points of the additive are set at two places, that is, the first chamber 3A on the upstream side and the fourth chamber 3D on the downstream side. The concentrations of the pickling accelerator and the pickling inhibitor contained in the pickling solution 4 in the washing tank 3 may be adjusted.
【００１７】また、上記実施形態では、図２のように、
酸洗促進剤の濃度を上流側から下流側に向けて低くなる
一方、酸洗抑制剤の濃度比率を上流側から下流側に向け
て高くなるように設定しているが、これに限定されな
い。例えば、酸洗促進剤の濃度については、上述と同様
に上流側から下流側に向けて低くなるように設定すると
共に、酸洗抑制剤の濃度については、上流側から下流側
に向けて略等しくなるように設定しても良い。上記実施
形態よりは脱スケール効率などが弱くなるが、従来例の
場合よりも脱スケール効率及び地鉄の腐食防止効果は大
きい。In the above embodiment, as shown in FIG.
Although the concentration of the pickling accelerator is set to decrease from the upstream side to the downstream side, and the concentration ratio of the pickling inhibitor is set to increase from the upstream side to the downstream side, the present invention is not limited to this. For example, the concentration of the pickling accelerator is set to be lower from the upstream side to the downstream side as described above, and the concentration of the pickling inhibitor is substantially equal from the upstream side to the downstream side. May be set. Although the descaling efficiency and the like are weaker than in the above embodiment, the descaling efficiency and the effect of preventing the corrosion of the base iron are greater than in the case of the conventional example.
【００１８】なお、上記実施形態では、少なくとも酸洗
促進剤と酸洗抑制剤とを含む添加剤が供給される場合に
ついて説明したが、添加剤として酸洗抑制剤単独あるい
は酸洗抑制剤単独で用い、各々独立に供給しても良い。In the above embodiment, the case where the additive containing at least the pickling accelerator and the pickling inhibitor is supplied has been described, but the pickling inhibitor alone or the pickling inhibitor alone is used as the additive. And may be supplied independently.
【００１９】[0019]
【実施例】脱スケール効果を確認するために、上記実施
形態で説明した設備を使用し、従来例のように、酸洗促
進剤及び酸洗抑制剤が所定の配合比率となっている添加
剤を第４室３Ｄだけから供給する従来方法の場合と、上
記実施形態のように第１室３Ａ及び第４室３Ｄからそれ
ぞれ添加剤を供給し、第１室３Ａに供給する添加剤につ
いては、上記従来例の添加剤中における酸洗抑制剤に対
する酸洗促進剤の量（酸洗促進剤／酸洗抑制剤）を１と
すると、酸洗抑制剤に対する酸洗促進剤の量が１．５と
なるように調整し、また、第４室３Ｄに供給する添加剤
については、酸洗抑制剤に対する酸洗促進剤の量が０．
５となるように調整した本発明方法の場合とで実施し
た。EXAMPLES In order to confirm the descaling effect, the equipment described in the above embodiment was used, and as in the conventional example, an additive in which a pickling accelerator and a pickling inhibitor had a predetermined mixing ratio. And the additive supplied from the first chamber 3A and the fourth chamber 3D and supplied to the first chamber 3A, respectively, as in the above-described embodiment. Assuming that the amount of the pickling accelerator to the pickling inhibitor (pickling accelerator / pickling inhibitor) in the conventional additive is 1, the amount of the pickling accelerator to the pickling inhibitor is 1.5. With respect to the additive supplied to the fourth chamber 3D, the amount of the pickling accelerator with respect to the pickling inhibitor is 0.1.
5 and the method of the present invention adjusted to be 5.
【００２０】他の条件は、従来方法と本発明方法とで同
じに設定してある。図３に、試験結果を各室出側でのス
ケール厚さで示す。この図３から分かるように、本発明
方法の方がスケール効率が良いことが分かる。Other conditions are set the same in the conventional method and the method of the present invention. FIG. 3 shows the test results by the scale thickness on the exit side of each chamber. As can be seen from FIG. 3, the method of the present invention has better scale efficiency.
【００２１】[0021]
【発明の効果】以上説明してきたように、本発明によれ
ば、酸洗槽での脱スケール効率が向上する。さらに、脱
スケール終了後の鋼板表面の地鉄の腐食も抑えることが
できる。As described above, according to the present invention, the descaling efficiency in the pickling tank is improved. Furthermore, the corrosion of the ground iron on the steel sheet surface after the end of descaling can be suppressed.
【図１】本発明に基づく実施形態に係る酸洗設備の設備
を示す概略構成図である。FIG. 1 is a schematic configuration diagram showing equipment of an pickling equipment according to an embodiment based on the present invention.
【図２】本発明に基づく実施形態に係る酸洗槽内におけ
る酸洗促進剤及び酸洗抑制剤の濃度分布例を示す図であ
る。FIG. 2 is a diagram showing an example of a concentration distribution of a pickling accelerator and a pickling inhibitor in a pickling tank according to an embodiment of the present invention.
【図３】実施例における脱スケール効率を示す図であ
る。FIG. 3 is a graph showing descaling efficiency in an example.
２ 鋼板 ３ 酸洗槽 ４ 酸洗液 ９ 第１注入管路 １０ 第２注入管路 2 Steel plate 3 Pickling tank 4 Pickling solution 9 First injection line 10 Second injection line
───────────────────────────────────────────────────── フロントページの続き (72)発明者 辻本 雅巳 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社千葉製鉄所内 Ｆターム(参考） 4K053 PA02 PA12 QA01 RA63 SA04 TA16 TA17 TA18 TA19 XA22 XA37 XA46 YA03 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masami Tsujimoto 1-term Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba F-term inside the Chiba Works, Chiba Works 4K053 PA02 PA12 QA01 RA63 SA04 TA16 TA17 TA18 TA19 XA22 XA37 XA46 YA03
Claims (3)
下流側に向けて鋼板を移動させることで当該鋼板表面の
脱スケールを行うと共に、上記酸洗槽中の酸洗液に、添
加剤として酸洗促進剤と酸洗抑制剤が供給される酸洗設
備において、 上記酸洗液中の酸洗促進剤の濃度を、下流側から上流側
に向けて高くなるように設定することを特徴とする酸洗
設備。1. A descaling of the surface of a steel sheet by moving a steel sheet from an upstream side to a downstream side in an acid pickling tank containing an acid pickling liquid, and removing the steel sheet from the pickling liquid in the pickling tank. In the pickling equipment to which the pickling accelerator and the pickling inhibitor are supplied as additives, the concentration of the pickling accelerator in the pickling liquid is set so as to increase from the downstream side toward the upstream side. Pickling equipment characterized by that.
流側から下流側に向けて高くなるように設定することを
特徴とする請求項１に記載した酸洗設備。2. The pickling equipment according to claim 1, wherein the concentration of the pickling inhibitor in the pickling solution is set so as to increase from upstream to downstream.
下流側に向けて鋼板を移動させることで当該鋼板表面の
脱スケールを行うと共に、上記酸洗槽中の酸洗液に、添
加剤として酸洗促進剤と酸洗抑制剤が供給される酸洗設
備において、 酸洗槽内への上記添加剤の供給位置を、鋼板の移動方向
に沿って複数箇所設け、上記各添加剤の供給位置から供
給される酸洗促進剤の濃度は、相対的に下流側位置から
よりも上流側位置からの方が高く、且つ、上記各添加剤
の供給位置から供給される酸洗抑制剤の濃度は、相対的
に上流側位置からよりも下流側位置からの方が高いこと
を特徴とする酸洗設備。3. The descaling of the surface of the steel sheet by moving the steel sheet from the upstream side to the downstream side in the pickling tank containing the pickling liquid, and the pickling liquid in the pickling tank. In the pickling equipment to which the pickling accelerator and the pickling inhibitor are supplied as additives, a plurality of supply positions of the additives into the pickling tank are provided along the moving direction of the steel sheet, and The concentration of the pickling accelerator supplied from the supply position of the agent is relatively higher from the upstream position than from the downstream position, and the concentration of the pickling accelerator supplied from the supply position of each of the additives is suppressed. Pickling equipment characterized in that the concentration of the agent is relatively higher from a downstream position than from an upstream position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001049336A JP2002249888A (en) | 2001-02-23 | 2001-02-23 | Pickling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001049336A JP2002249888A (en) | 2001-02-23 | 2001-02-23 | Pickling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002249888A true JP2002249888A (en) | 2002-09-06 |
Family
ID=18910451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001049336A Pending JP2002249888A (en) | 2001-02-23 | 2001-02-23 | Pickling equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002249888A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015200020A (en) * | 2014-03-31 | 2015-11-12 | 株式会社神戸製鋼所 | ACID CLEANING METHOD OF HOT ROLLED SHEET STEEL WITH HIGH CONTENT OF Si AND Mg |
| WO2018062860A3 (en) * | 2016-09-27 | 2018-05-24 | 주식회사 포스코 | Uniform treatment apparatus and pickling apparatus |
| WO2018117541A1 (en) * | 2016-12-22 | 2018-06-28 | 주식회사 포스코 | Pickling apparatus |
| WO2018117761A1 (en) * | 2016-12-23 | 2018-06-28 | 주식회사 포스코 | Apparatus and method for improving performance of pickling high tensile strength steel |
| KR101917470B1 (en) * | 2016-12-23 | 2018-11-09 | 주식회사 포스코 | Picking apparatus |
-
2001
- 2001-02-23 JP JP2001049336A patent/JP2002249888A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015200020A (en) * | 2014-03-31 | 2015-11-12 | 株式会社神戸製鋼所 | ACID CLEANING METHOD OF HOT ROLLED SHEET STEEL WITH HIGH CONTENT OF Si AND Mg |
| WO2018062860A3 (en) * | 2016-09-27 | 2018-05-24 | 주식회사 포스코 | Uniform treatment apparatus and pickling apparatus |
| WO2018117541A1 (en) * | 2016-12-22 | 2018-06-28 | 주식회사 포스코 | Pickling apparatus |
| KR101917460B1 (en) | 2016-12-22 | 2018-11-09 | 주식회사 포스코 | Pickling apparatus |
| WO2018117761A1 (en) * | 2016-12-23 | 2018-06-28 | 주식회사 포스코 | Apparatus and method for improving performance of pickling high tensile strength steel |
| KR101917470B1 (en) * | 2016-12-23 | 2018-11-09 | 주식회사 포스코 | Picking apparatus |
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