JP2902164B2 - Steel sheet surface treatment equipment - Google Patents
Steel sheet surface treatment equipmentInfo
- Publication number
- JP2902164B2 JP2902164B2 JP18099791A JP18099791A JP2902164B2 JP 2902164 B2 JP2902164 B2 JP 2902164B2 JP 18099791 A JP18099791 A JP 18099791A JP 18099791 A JP18099791 A JP 18099791A JP 2902164 B2 JP2902164 B2 JP 2902164B2
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- resonance tube
- surface treatment
- pickling
- nozzle
- 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 - Fee Related
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は鋼体の表面を酸洗，脱脂
処理する鋼板の表面処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel sheet surface treatment apparatus for pickling and degreasing the surface of a steel body.
【０００２】[0002]
【従来の技術】図４に、従来技術に係る連続して帯鋼を
酸洗するための噴流酸洗槽の縦断面図を、図５にはその
Ｖ−Ｖ線矢印断面図を示す。両図に示すように、容器０
１は箱状をなしており、搬送される帯鋼Ｓの走行中（図
４中左右方向に走行する）に亙ってノズルヘッダ０２か
ら噴出される酸液Ｌによってその表面を酸洗処理してい
る。この容器０１の槽底面０３は、その一部が帯鋼Ｓの
走行方向に亙って一般に高く形成されており、この一段
高い槽底部０３上には、帯鋼Ｓを支持する複数のスキッ
ド０４が設けられている。また容器０１内には帯鋼Ｓの
走行方向に沿って複数箇所排液口０５が形成され、且つ
帯鋼Ｓの走行方向の前後には排液路０６，０６を通って
排液口０５から排出された酸洗液Ｌを貯留する集液室０
７，０７が形成されている。この集液室０７，０７には
それぞれ排液管０８，０８が取付けられ、この排液管０
８，０８は酸洗液Ｌを貯留する図示しない酸液タンクに
接続されており、この酸洗液Ｌは環境装置によってノズ
ルヘッダ０２に送られ、再び酸処理に供される。2. Description of the Related Art FIG. 4 is a longitudinal sectional view of a jet pickling tank for continuously pickling strip steel according to the prior art, and FIG. 5 is a sectional view taken along line VV of FIG. As shown in both figures, container 0
Reference numeral 1 denotes a box shape, and the surface of the conveyed steel strip S is pickled by an acid solution L ejected from a nozzle header 02 during traveling (traveling in the left-right direction in FIG. 4). ing. The tank bottom surface 03 of the container 01 is generally formed to be partially higher in the running direction of the steel strip S, and a plurality of skids 04 for supporting the steel strip S are provided on the higher tank bottom part 03. Is provided. A plurality of drainage ports 05 are formed in the container 01 along the running direction of the steel strip S, and the drainage ports 05 and 06 pass through the drainage passages 06 before and after the running direction of the steel strip S. Liquid collecting chamber 0 for storing the discharged pickling liquid L
7,07 are formed. Drainage pipes 08 and 08 are attached to the liquid collection chambers 07 and 07, respectively.
8,08 is connected to an acid liquid tank (not shown) for storing the pickling liquid L, and the pickling liquid L is sent to the nozzle header 02 by an environmental device, and is again subjected to the acid treatment.
【０００３】[0003]
【発明が解決しようとする課題】そころで、前述した従
来技術に係る酸洗装置では、酸洗効果を支配する酸洗液
Ｌと鋼板Ｓとの間の物質移動現象が、鋼板Ｓの移動に伴
う酸洗液Ｌとの間の相対速度、及び容器０１の入出口の
みに取付けられたノズルヘッダ０２からの液流速度の攪
拌効果のみによって促進されていた。この促進効果をさ
らに向上し、酸洗時間を短かくして処理の高速化を図り
たいという要望がある。このため、ノズルヘッダ０２を
容器０１の入出口以外の多くの箇所に配設する手段も提
案されている。しかし、腐食性の強い酸洗液Ｌを循環さ
せるための、例えばポンプ，配管，バルブ等の循環装置
（図示せず）が必要であり、製作コストが高価なものに
なると共に、ポンプ動力が大きくなるので、そのランニ
ングコストも高くなるという問題がある。However, in the above-described pickling apparatus according to the prior art, the mass transfer phenomenon between the pickling liquid L and the steel sheet S, which governs the pickling effect, is caused by the movement of the steel sheet S. And the stirring speed of the liquid flow speed from the nozzle header 02 attached only to the inlet / outlet of the container 01. There is a demand to further improve this promoting effect, shorten the pickling time, and increase the processing speed. For this reason, means for disposing the nozzle header 02 at many places other than the entrance and exit of the container 01 has also been proposed. However, a circulating device (not shown) such as a pump, a pipe, and a valve for circulating the highly corrosive pickling liquid L is required, which increases the manufacturing cost and increases the pump power. Therefore, there is a problem that the running cost increases.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決する本発
明に係る鋼板の表面処理装置の構成は、鋼板を処理液に
浸漬しつつ走行させ、その表面を処理する鋼板の表面処
理装置であって、処理液を保持すると共にその内部を鋼
板が走行する容器と、該容器を貫通しその先端開口部が
前記鋼板の表面に対向し処理液に浸漬する複数のノズル
と、該ノズルの他端が接続されると共に気体を充満した
共鳴管と、該共鳴管内の気体の圧力を脈動させる脈動発
振装置とを具備することを特徴とする。Means for Solving the Problems The structure of the steel sheet surface treatment apparatus according to the present invention which solves the above-mentioned problems is a steel sheet surface treatment apparatus for running a steel sheet while immersing the steel sheet in a treatment liquid and treating the surface. A container that holds the processing liquid and in which the steel plate travels, and a plurality of nozzles that penetrate through the container and have a tip opening facing the surface of the steel plate and immersed in the processing liquid; and the other end of the nozzle. Are connected and a gas-filled resonance tube, and a pulsation oscillator for pulsating the pressure of the gas in the resonance tube.
【０００５】[0005]
【作用】上記構成において、鋼板の表面処理に際し、共
鳴管内の気体の圧力を脈動発振装置によって周期的に変
動（脈動）させて各々のノズル内の処理液の水柱を昇降
させ、処理液の噴流をノズルから間欠的に噴出して鋼板
の表面に衝突させ、鋼板表面の液流の攪拌によってその
濃度境界層を薄くすることにより、その処理効果を向上
する。なお、共鳴管内の気体は共鳴状態となり、気体の
流れによるエネルギーロスを最小限にして、しかも高い
圧力変動が得られる。In the above construction, the pressure of the gas in the resonance tube is periodically fluctuated (pulsed) by the pulsation oscillator to raise and lower the water column of the processing liquid in each nozzle during the surface treatment of the steel sheet. Is intermittently ejected from the nozzle to collide with the surface of the steel sheet, and the concentration boundary layer is thinned by stirring the liquid flow on the steel sheet surface, thereby improving the processing effect. The gas in the resonance tube is brought into a resonance state, and energy loss due to the flow of the gas is minimized, and a high pressure fluctuation is obtained.
【０００６】[0006]
【実施例】以下、本発明に係る帯鋼酸洗装置の好適な一
実施例を図面を参照して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a strip steel pickling apparatus according to the present invention will be described below in detail with reference to the drawings.
【０００７】図１は本実施例に係る鋼板の表面処理装置
の要部縦断面図、図２は図１のII−II線矢視断面図であ
る。これらの図面に示すように鋼板の表面処理装置１０
は、容器１１内に酸洗液Ｌを充満すると共にその槽底部
１１ａに配設されたスキッド１２上を走行する帯鋼Ｓの
表面を酸洗処理するものである。FIG. 1 is a longitudinal sectional view of a main part of a steel sheet surface treatment apparatus according to this embodiment, and FIG. 2 is a sectional view taken along line II-II of FIG. As shown in these drawings, the steel sheet surface treatment apparatus 10
Is to fill the container 11 with the pickling liquid L and to pickle the surface of the steel strip S running on the skid 12 provided at the tank bottom 11a.
【０００８】上記容器１１の内を走行する鋼板Ｓの状面
近傍には、容器１１の槽上部１１ｂを貫通して共鳴管１
３に連通する上ノズル１４の先端開口部１４ａが対向す
るように複数配設されている。すなわち、本実施例にお
いては１つの共鳴管１３に連通する複数の上ノズル１４
は、帯鋼Ｓの走行方向に３列に亙って設けられる（図１
参照）と共に、帯鋼Ｓの幅方向に９列に亙って設けられ
ており（図２参照）、酸洗液を鋼板の表面に噴出してい
る。この共鳴管１３には、該共鳴管１３内の空気を周期
的に脈動させる脈動発振装置１５が装置されている（図
２参照）。In the vicinity of the surface of the steel sheet S traveling inside the container 11, the resonance tube 1 penetrates through the tank upper portion 11b of the container 11.
A plurality of upper nozzles 14 communicating with the third nozzle 14 are provided such that the distal end openings 14a thereof face each other. That is, in this embodiment, a plurality of upper nozzles 14 communicating with one resonance tube 13 are provided.
Are provided over three rows in the running direction of the strip S (FIG. 1).
Along with nine rows in the width direction of the steel strip S (see FIG. 2), and the pickling liquid is jetted onto the surface of the steel sheet. A pulsation oscillator 15 for periodically pulsating the air in the resonance tube 13 is provided in the resonance tube 13 (see FIG. 2).
【０００９】一方、容器１１内を走行する帯鋼Ｓの下面
近傍には、上ノズル１４と同様に、槽底部１１ａを貫通
して共鳴管１３に連通する下ノズル１６の先端開口部１
６ａが対向するように複数配設されている。この下ノズ
ル１６は、その内部で水柱Ｌ2 を昇降させると共に、共
鳴管１３内に酸洗液の流入を防止するため、曲管状とし
ている。On the other hand, similar to the upper nozzle 14, near the lower surface of the strip S running in the container 11, the tip opening 1 of the lower nozzle 16 penetrating through the tank bottom 11a and communicating with the resonance tube 13 is provided.
6a are provided so as to face each other. The lower nozzle 16 has a curved tubular shape in order to raise and lower the water column L 2 therein and to prevent the pickling liquid from flowing into the resonance tube 13.
【００１０】上記上ノズル１４及び下ノズル１６が各々
連通する１本の共鳴管１３の両端部には、図２に示すよ
うに、シリンダ１７が装着されており、この連結される
シリンダ１７内にピストン１８が移動自在に位置してお
り、このピストン１８には、基端側がクランク軸１９と
連結する連接棒２０の先端側に連結されている。また、
クランク軸１９はクランク軸１９を回転するモータ（図
示せず）と連結されており、これらシリンダ１７，ピス
トン１８，連接棒２０及びクランク軸１９等により構成
されるクランク機構でモータの回転がピストン１８の往
復動に変換されて、これに伴って共鳴管１３内に圧力変
動を生じさせる脈動装置１５を構成している。As shown in FIG. 2, cylinders 17 are mounted at both ends of one resonance tube 13 through which the upper nozzle 14 and the lower nozzle 16 communicate with each other. A piston 18 is movably located, and a proximal end of the piston 18 is connected to a distal end of a connecting rod 20 connected to a crankshaft 19. Also,
The crankshaft 19 is connected to a motor (not shown) for rotating the crankshaft 19, and the rotation of the motor is controlled by a crank mechanism constituted by the cylinder 17, the piston 18, the connecting rod 20, the crankshaft 19, and the like. The pulsation device 15 is converted into the reciprocating motion of the pulsation and generates a pressure fluctuation in the resonance tube 13 accordingly.
【００１１】次に本装置を用いて帯鋼を酸洗する手順を
説明する。帯鋼Ｓを容器１１内の酸洗液Ｌに浸漬し、ス
キッド１２によって支持しながら走行させる。そして、
脈動発振装置１５によって共鳴管１３内の空気圧力を周
期的に変動（脈動）させて上ノズル１４及び下ノズル１
６内の酸洗液Ｌの水柱Ｌ2 を昇降させ、上ノズル１４及
び下ノズル１６の先端部から酸洗液の噴流Ｌ1 を帯鋼Ｓ
の上面及び下面に間欠的に衝突させて表面の濃度境界槽
を薄くすることにより、その酸洗効果を向上する。図３
は、共鳴管１３の有効長さｌ＝約8.5 ｍ、発振装置１５
の発振周波数＝２０ＨZ によって実験した結果を、共鳴
管１３を展開して示すものであり、その内部の空気圧力
は発振装置１５の作動によって図示のように変動する。
同図に示すように共鳴管１３の長さｌ及び発振周波数
は、共鳴管１３内の空気の音速によって設定することで
共鳴管１３内の共鳴状態を得ることができ、その空気の
流れによるエネルギーロスを最小限にして、しかも高い
圧力変動を得ることができる。なお、本実施例では、水
平パスする鋼板Ｓの上下面を同時に処理する例を示して
いるが、本発明はこれに限定されず例えば帯鋼のパス方
向の水平、鉛直を問わずまた、帯鋼の片面毎の独立処理
も可能である。Next, a procedure for pickling a steel strip using the present apparatus will be described. The steel strip S is immersed in the pickling liquid L in the container 11 and travels while being supported by the skid 12. And
The air pressure in the resonance tube 13 is periodically fluctuated (pulsed) by the pulsation oscillation device 15 so that the upper nozzle 14 and the lower nozzle 1
The water column L 2 of the pickling solution L within 6 to lift, the upper nozzle 14 and the strip S jets L 1 of the pickling solution from the tip portion of the lower nozzle 16
The pickling effect is improved by intermittently colliding the upper surface and the lower surface of the substrate to reduce the concentration boundary tank on the surface. FIG.
Is the effective length l of the resonance tube 13 = about 8.5 m, and the oscillation device 15
The results of the experiment by the oscillation frequency = 20H Z of, which indicates to expand the resonance tube 13, the air pressure inside varies as shown by the operation of the oscillator 15.
As shown in the figure, the length 1 and the oscillation frequency of the resonance tube 13 can be set by the sound speed of the air in the resonance tube 13 so that a resonance state in the resonance tube 13 can be obtained. High pressure fluctuations can be obtained while minimizing losses. In the present embodiment, an example is shown in which the upper and lower surfaces of the steel sheet S that passes horizontally are simultaneously processed. However, the present invention is not limited to this. For example, regardless of whether the steel sheet S is horizontal or vertical in the pass direction, Independent processing for each side of steel is also possible.
【００１２】[0012]
【発明の効果】以上実施例と共に述べたように、本発明
による鋼板の表面処理装置では、走行する鋼板の表面液
を噴射するノズルと、内部の気体の圧力を脈動させる共
鳴管及び発振装置とを設けたことにより、ノズルから間
欠的に噴流を噴出して鋼板の表面に衝突させて表面境界
層を充分薄くすることができるので、表面処理効果が向
上し、処理時間を短縮することができる。従って、鋼板
の走行速度の向上または処理容器の長さの短縮をはかる
ことができる。また、処理液の循環装置が不要になるの
で、装置の製作コスト及びランニングコストを低減する
ことができる。As described above with the embodiments, the surface treatment apparatus for a steel sheet according to the present invention includes a nozzle for injecting a surface liquid of a running steel sheet, a resonance tube and an oscillator for pulsating the pressure of the gas inside. Is provided, the jet flow can be intermittently ejected from the nozzle and made to collide with the surface of the steel sheet to make the surface boundary layer sufficiently thin, so that the surface treatment effect is improved and the treatment time can be reduced. . Therefore, it is possible to improve the traveling speed of the steel plate or shorten the length of the processing container. In addition, since a device for circulating the processing liquid is not required, the manufacturing cost and the running cost of the device can be reduced.
【図１】本発明の一実施例に係る鋼板の表面処理装置の
概略図である。FIG. 1 is a schematic view of a steel sheet surface treatment apparatus according to one embodiment of the present invention.
【図２】図１のII−II線矢視断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.
【図３】共鳴管内の空気圧力変動を示すグラフである。FIG. 3 is a graph showing air pressure fluctuation in a resonance tube.
【図４】従来技術に係る酸洗装置の縦断面図である。FIG. 4 is a longitudinal sectional view of a pickling apparatus according to the related art.
【図５】図４Ｖ−Ｖ線矢視断面図である。FIG. 5 is a sectional view taken along line VV of FIG. 4;
１０ 鋼板の表面処理装置 １１ 容器 １２ スキッド １３ 共鳴管 １４ 上ノズル １５ 脈動発振装置 １６ 下ノズル Ｓ 帯鋼 Ｌ 酸洗液 DESCRIPTION OF SYMBOLS 10 Surface treatment apparatus of steel plate 11 Container 12 Skid 13 Resonance tube 14 Upper nozzle 15 Pulsation oscillator 16 Lower nozzle S Strip steel L Pickling liquid
───────────────────────────────────────────────────── フロントページの続き (72)発明者 古沢 雄二 広島県広島市西区観音新町四丁目６番22 号 三菱重工業株式会社 広島研究所内 (72)発明者 板野 重夫 広島県広島市西区観音新町四丁目６番22 号 三菱重工業株式会社 広島研究所内 (56)参考文献 特開 昭62−196385（ＪＰ，Ａ) 特開 昭62−227793（ＪＰ，Ａ) 実開 昭62−93373（ＪＰ，Ｕ) 特公 昭55−474（ＪＰ，Ｂ２) 特公 平５−40836（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) C23G 3/02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuji Furusawa 4-22, Kannonshinmachi, Nishi-ku, Hiroshima-shi, Hiroshima Mitsubishi Heavy Industries, Ltd. Hiroshima Research Laboratory (72) Inventor Shigeo Itano 4-chome, Kannonshinmachi, Nishi-ku, Hiroshima-shi, Hiroshima No.6-22 Mitsubishi Heavy Industries, Ltd. Hiroshima Research Laboratory (56) References JP-A-62-196385 (JP, A) JP-A-62-227793 (JP, A) JP-A-62-93373 (JP, U) 55-474 (JP, B2) JP-B 5-40836 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) C23G 3/02
Claims (1)
の表面を処理する鋼板の表面処理装置であって、 処理液を保持すると共にその内部を鋼板が走行する容器
と、該容器を貫通しその先端開口部が前記鋼板の表面に
対向し処理液に浸漬する複数のノズルと、該ノズルの他
端が接続されると共に気体を充満した共鳴管と、該共鳴
管内の気体の圧力を脈動させる脈動発振装置とを具備す
ることを特徴とする鋼板の表面処理装置。1. A surface treatment apparatus for a steel sheet, in which a steel sheet is run while being immersed in a processing liquid, and a surface of the steel sheet is processed. A plurality of nozzles whose leading end openings face the surface of the steel plate and are immersed in the processing liquid; a resonance tube connected to the other end of the nozzle and filled with gas; and a pulsating pressure of gas in the resonance tube. A surface treatment apparatus for a steel sheet, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18099791A JP2902164B2 (en) | 1991-07-22 | 1991-07-22 | Steel sheet surface treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18099791A JP2902164B2 (en) | 1991-07-22 | 1991-07-22 | Steel sheet surface treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0525669A JPH0525669A (en) | 1993-02-02 |
| JP2902164B2 true JP2902164B2 (en) | 1999-06-07 |
Family
ID=16092931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18099791A Expired - Fee Related JP2902164B2 (en) | 1991-07-22 | 1991-07-22 | Steel sheet surface treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2902164B2 (en) |
-
1991
- 1991-07-22 JP JP18099791A patent/JP2902164B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0525669A (en) | 1993-02-02 |
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