JPS62256974A - Continuous pickling device for one face of clad steel plate - Google Patents
Continuous pickling device for one face of clad steel plateInfo
- Publication number
- JPS62256974A JPS62256974A JP9924286A JP9924286A JPS62256974A JP S62256974 A JPS62256974 A JP S62256974A JP 9924286 A JP9924286 A JP 9924286A JP 9924286 A JP9924286 A JP 9924286A JP S62256974 A JPS62256974 A JP S62256974A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- pickling
- scale
- clad steel
- roller table
- 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 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 238000005554 pickling Methods 0.000 title claims abstract description 58
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims description 11
- 239000002648 laminated material Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000003082 abrasive agent Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000000576 coating method Methods 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 238000005422 blasting Methods 0.000 abstract description 5
- 238000005253 cladding Methods 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 4
- 235000021110 pickles Nutrition 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 3
- 238000007670 refining Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 19
- 239000000243 solution Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 238000005098 hot rolling Methods 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- 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
この発明は、熱間圧延鋼板の片面酸洗技術に係り、特に
異種金属を重ね合せて接合したクラッド鋼板の合せ材表
面の熱延スケールを効率よく除去する片面連続酸洗装置
に関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a single-sided pickling technique for hot rolled steel sheets, and in particular, to efficiently remove hot rolling scale on the surface of a laminate of clad steel sheets made by overlapping and bonding dissimilar metals. The present invention relates to a single-sided continuous pickling device for removing.
従来技術とその問題点
クラッド鋼板は周知の通り、鋼板を母材としてその片面
あるいは両面に異種の金属を合せ材として、各種方法で
接合したものである。このクラッド鋼板の場合は通常、
母材と合せ材とを組立てた後熱間圧延して製造されるが
、圧延前加熱炉等で長時間加熱されるため、普通の熱間
圧延鋼板と同様、熱間圧延後の鋼板表面にスケールが生
成する。BACKGROUND OF THE INVENTION As is well known, clad steel plates are made by using a steel plate as a base material and bonding different metals on one or both sides thereof using various methods. In the case of this clad steel plate, usually
Manufactured by hot rolling after assembling the base material and the laminate, but because it is heated for a long time in a heating furnace etc. before rolling, the surface of the steel sheet after hot rolling is similar to ordinary hot rolled steel sheets. The scale is generated.
従って、クラッド鋼板についても圧延後脱スケールされ
る。特に、耐食性に富むステンレス鋼（合せ材）と炭素
鋼（母材）からなるクラッド鋼板の場合、良好な耐食性
を発揮させるためにはステンレス合せ材表面の熱延スケ
ールを完全に除去する必要がある。その脱スケール方法
としては、コスト的に有利な酸洗を用いるのが一般的で
ある。ところが、ステンレス合せ材の熱延スケールは炭
素鋼母材の熱延スケールに比べ、生成するスケール構造
が異なるため酸洗脱スケールされにくく、通常は炭素鋼
の酸洗脱スケールに用いる塩酸ではなく、よりスケール
溶解力の優れた弗酸と硝酸の混酸を使用する場合が多い
。その際、炭素鋼母材表面に弗硝酸が付着すると腐蝕さ
れて製品の表面肌が損われるおそれが多分にあるため、
このようなりラッド鋼板については片面のみを酸洗する
必要が必り、従来種々の片面酸洗方法が開発されている
。Therefore, the clad steel plate is also descaled after rolling. In particular, in the case of clad steel plates made of highly corrosion-resistant stainless steel (laminated material) and carbon steel (base material), it is necessary to completely remove hot-rolled scale on the surface of the stainless steel laminate material in order to exhibit good corrosion resistance. . As a method for descaling, pickling, which is advantageous in terms of cost, is generally used. However, the hot-rolled scale of stainless steel laminated materials has a different scale structure than the hot-rolled scale of carbon steel base material, so it is difficult to be descaled by pickling. A mixed acid of hydrofluoric acid and nitric acid is often used because it has better scale-dissolving power. At that time, if fluoronitric acid adheres to the surface of the carbon steel base material, there is a high risk of corrosion and damage to the surface of the product.
For such a rad steel plate, it is necessary to pickle only one side, and various single-sided pickling methods have been developed.
例えば、耐酸性および柔軟性を有するシートに鋼板を磁
気力により密着させて母材面を保護シールした後、ステ
ンレス合せ材面に酸液をブラシにて供給して酸洗を行な
う方法（特開昭５９−８３７８２）、鋼板両端面に回転
無端マグネットベルトを密着させてシールしつつ、鋼板
下面に酸洗液を供給する方法（特開昭５９−１１０７８
７）等が知られている。しかし、これらの方法は、いず
れも酸洗液をスプレー噴射する方式でおるから酸洗液の
回収、循環のため高圧ポンプの連続運転が不可欠となり
、その高圧ポンプが耐食性の点から寿命が短く、また電
力を大量に消費するためランニングコストが嵩む欠点が
ある。また、ブラシ、無端ベルト方式のいずれも駆動部
の消耗劣化が激しく、設備の信頼性に問題がめった。For example, a method is used in which a steel plate is magnetically attached to an acid-resistant and flexible sheet to protect and seal the base metal surface, and then an acid solution is applied to the stainless steel mating surface with a brush to perform pickling (Unexamined Japanese Patent Publication No. 1983-83782), a method of supplying a pickling liquid to the lower surface of a steel plate while sealing a rotating endless magnetic belt in close contact with both end faces of the steel plate (Japanese Patent Laid-Open No. 59-11078)
7) etc. are known. However, all of these methods involve spraying the pickling solution, which requires continuous operation of a high-pressure pump to collect and circulate the pickling solution, and the high-pressure pump has a short lifespan due to its corrosion resistance. In addition, it consumes a large amount of electricity, so it has the disadvantage of increasing running costs. In addition, in both the brush and endless belt systems, the driving parts were subject to severe wear and tear, which caused problems with the reliability of the equipment.
発明の目的
この発明は従来の前記問題点を′ｆｆｌ−決するために
なされたもので、設備費およびランニングコス１〜が安
くつくのみならず、酸洗効率の優れた片面連続酸洗装置
を提案することを目的とするものである。Purpose of the Invention This invention was made to solve the above-mentioned conventional problems, and proposes a single-sided continuous pickling device that not only reduces equipment costs and running costs but also has excellent pickling efficiency. The purpose is to
発明のＢ４成
この発明に係るクラッド鋼板の片面連ｖｃ！洗）ｌ置は
、クラッド鋼板の合せ材側に研１吊材を投射してスケー
ルブレーキングする装置、スケールブレーキング後の鋼
板を、酸洗槽内の酸洗）［ダ面上に一部が露出し一部が
浸漬したロール群上を走行させて鋼板下面のみに酸洗液
を塗イ同る装置、酸洗後の鋼板を水洗する装置および水
洗後の鋼板を乾燥する装置を具備したことを特徴とする
ものである。B4 structure of the invention Single-sided VC of the clad steel plate according to the invention! The equipment is a device that performs scale breaking by projecting a hanging material onto the laminated material side of the clad steel plate, and the steel plate after scale breaking is pickled in a pickling tank. The pickling solution is applied only to the lower surface of the steel plate by running it over a group of rolls that are exposed and partially immersed, and is equipped with a device that washes the steel plate after pickling with water, and a device that dries the steel plate after washing with water. It is characterized by this.
すなわち、この発明は鋼板下面のスケールブレーキング
−ロール塗布による酸洗→水洗→乾燥の一連の工程をオ
ンライン化したものであって、脱スケール性を改善する
ため酸洗前にショツトブラストによるスケールブレーキ
ングを行なうこと、片面酸洗方式にロール塗布方式を採
用したこと、および前記一連の工程をオンライン化した
点に大きな特徴を有するものでおる。In other words, this invention brings online the series of processes of scale breaking on the lower surface of a steel plate - pickling by roll coating → washing with water → drying.In order to improve descaling performance, scale breaking by shot blasting is performed before pickling. The main features of this method are that it uses a roll coating method instead of a single-sided pickling method, and that the series of steps described above are carried out online.
ロール塗布方式による酸洗脱スケール法は、酸洗液面上
に一部が露出し一部が浸漬したロール群を酸洗槽内に設
けることによって酸洗液を鋼板下面に供給付着させる方
式でおり、設備費が比較的安くつく利点を有するのみな
らず、鋼板下面に酸洗液を一様に供給付着できるという
優れた特徴を有する。なお、酸洗液を十分鋼板に塗布さ
せるためにロールは酸洗液中に半分以上浸漬するのが好
ましい。The pickling descaling method using a roll coating method is a method in which a group of rolls are provided in a pickling tank, with some parts exposed above the surface of the pickling solution and some parts immersed in the pickling solution, and the pickling solution is supplied to the lower surface of the steel plate and adheres to it. This method not only has the advantage of relatively low equipment costs, but also has the excellent feature of being able to uniformly supply and deposit the pickling liquid on the lower surface of the steel plate. In addition, in order to sufficiently apply the pickling solution to the steel plate, it is preferable that the roll is immersed half or more into the pickling solution.
しかるに、このロール塗布方式による酸洗脱スケール法
では、合せ材質が３１３３００．５ＵＳ４００系ステン
レス鋼（ＳＵＳ３０４，３１６，４０５，４４４）の熱
延スケールの場合は、酸洗時間が１０分〜２０分と比較
的短くてすむが、ＮＬ塁金合金熱延スケールの場合は酸
洗時間が非常に長くなり、酸洗効率が悪化する。そこで
この発明では、上記脱スケール性を改善するため、酸洗
前に研（吊材投射方式のスケールブレーキング装置によ
り合せ材下面のスケールブレーキングを行なう手段をこ
うじたのである。なあ、研掃材投射方式を採用したのは
、脱スケール性の改善に極めて有効であることによる。However, in this pickling descaling method using a roll coating method, if the mating material is hot-rolled scale made of 313300.5US400 series stainless steel (SUS304, 316, 405, 444), the pickling time is 10 to 20 minutes. Although it is relatively short, in the case of NL base metal alloy hot-rolled scale, the pickling time becomes very long and the pickling efficiency deteriorates. Therefore, in this invention, in order to improve the above-mentioned descaling property, we have adopted a means to perform scale breaking on the lower surface of the laminate using a scale breaking device using a hanging material projection method before pickling. The material projection method was adopted because it is extremely effective in improving descaling performance.
また、酸洗後鋼板の水洗および乾燥装置は、クラッド鋼
板の清浄度を確保するため不可欠の装置であり、水洗装
置は特に限定するものではないか温水スプレ一方式を、
乾燥装置は熱風吹付は方式をそれぞれ用いることができ
る。In addition, water washing and drying equipment for steel plates after pickling is essential equipment to ensure the cleanliness of clad steel plates, and the water washing equipment is not particularly limited.
The drying device can use a method of blowing hot air.
以下、この発明装置の好ましい構成例を図面に基づいて
説明する。Hereinafter, a preferred configuration example of the device of the present invention will be explained based on the drawings.
第１図は装置金体の構成を示す概略平面図、第２図は同
上装置の概略縦断側面図でおる。FIG. 1 is a schematic plan view showing the structure of the device metal body, and FIG. 2 is a schematic longitudinal sectional side view of the same device.
すなわち、（１）は熱延ラインにつながる入口Ｄ −ラ
テーブルであり、被処理鋼板は合せ材側を下面にして熱
延ラインから搬入される。（２）は被処理鋼板下面に研
掃材を投射してスケールブレーキングするショツトブラ
スト装置で、ピット内に設置された投射ノズル（２−１
）にて研掃材が鋼板下面に投射されるようになっている
。（３）はロール塗布方式の酸洗槽で、塗イ［ロール（
３−１）は酸洗液面上に一部が露出するごとく酸洗液＜
３−２）中に浸漬配置されている。ここで使用される
ロールは通常ゴムロールもしくは樹脂性ロールである。That is, (1) is an entrance D-ra table connected to the hot rolling line, and the steel plate to be processed is carried in from the hot rolling line with the laminate side facing downward. (2) is a shot blasting device that performs scale breaking by projecting abrasive material onto the lower surface of the steel plate to be treated, and the projection nozzle (2-1
), the abrasive material is projected onto the lower surface of the steel plate. (3) is a roll coating method pickling tank.
3-1) The pickling solution is partially exposed above the pickling solution surface.
3-2) Immersed in the container. The rolls used here are usually rubber rolls or resin rolls.
塗布ロールの形状は例えば第３図に示すような構造のも
のを用いることができる。ここで（１３−１＞はシャフ
ト、（１３−２）はシート状のゴムもしくはポリプロピ
レン不織布、（１３−３）はフランジである。The application roll may have a structure as shown in FIG. 3, for example. Here, (13-1> is a shaft, (13-2) is a sheet-like rubber or polypropylene nonwoven fabric, and (13-3) is a flange.
（３−３）は被処理鋼板を揺動させる駆動ロールで、塗
布ロール群の中に必要個数配置されている。(3-3) is a drive roll for swinging the steel plate to be treated, and a required number of drive rolls are arranged in the coating roll group.
（３−４）はそのロール駆動モータである。（４）は鋼
板下面の水洗装置で、温水スプレーを備えている。(3-4) is the roll drive motor. (4) is a water washing device for the underside of the steel plate, which is equipped with hot water spray.
（５）は乾燥装置で、熱風噴射装置を備えている。（６
）は銅板反転用ローラテーブルで、モータ（５−ｉ）で
駆動される各ローラ間に設けられた支持棒（６−２）に
て鋼板を自動的に反転できる仕組みとなっている。（７
）は出口ローラテーブルである。(5) is a drying device equipped with a hot air injection device. (6
) is a roller table for reversing a copper plate, and has a mechanism in which a steel plate can be automatically reversed using a support rod (6-2) provided between each roller driven by a motor (5-i). (7
) is the exit roller table.
作 用
上記装置において、被処理鋼板（８）は合せ材側を下面
にして入口ローラテーブル（１）上を通板させながらシ
ョツトブラスト装置（２）に搬入され、合せ材に合せた
ショット条件でスケールブレーキングされた後、酸洗槽
（３）に導入される。酸洗槽に導入された被処理鋼板（
８）は駆動モータ（３−４）で回転させられるロール（
３−３）にて塗布ロール群上を所定時間揺動させられる
。この間、酸洗液（３−２）は塗布ロール（３−１）を
介して該鋼板下面に供給され、酸洗脱スケールが進行す
る。所定時間酸洗後、該鋼板（８）は水洗装置（４）で
下面を温水スプレーでリンスされ、続いて乾燥装置（５
）にて熱風で乾燥された後、鋼板反転用ローラテーブル
（６）上に搬送され、モータ（６−１）で駆動される支
持棒（６−２）にて自動的に反転されて出口ローラテー
ブル（力士に移載される。反転により合せ材側が上面と
なった被処理鋼板（８）は出口ローラテーブル（７）に
て検査された後精整ラインへ送られる。Function: In the above device, the steel plate (8) to be treated is carried into the shot blasting device (2) while being passed over the entrance roller table (1) with the laminate side facing downward, and is subjected to shot conditions tailored to the laminate material. After scale breaking, it is introduced into a pickling tank (3). Steel plate to be treated introduced into pickling tank (
8) is a roll (3-4) rotated by a drive motor (3-4).
In 3-3), the application roll group is oscillated for a predetermined period of time. During this time, the pickling liquid (3-2) is supplied to the lower surface of the steel plate via the coating roll (3-1), and pickling and descaling progresses. After pickling for a predetermined period of time, the steel plate (8) is rinsed with hot water spray on the lower surface in a water washing device (4), and then in a drying device (5).
), the steel plate is transported onto a roller table (6) for reversing the steel plate, and is automatically reversed by a support rod (6-2) driven by a motor (6-1) to be transferred to an exit roller. The steel plate (8) to be processed is transferred to the table (Sumo wrestler).The steel plate (8) with the laminate side facing upward due to inversion is inspected at the exit roller table (7) and then sent to the finishing line.
なお、上記一連の動作は連続的に行なわれることはいう
までもない。It goes without saying that the series of operations described above are performed continuously.
発明の詳細
な説明したごとく、この発明装置は酸洗槽の上流側にシ
ョツトブラスト方式のスケールブレーキング装置を設置
し、酸洗前に合せ材側の熱延スケールに対しスケールブ
レーキングを施すようにしたことにより、酸洗槽での脱
スケール性が著しく改善される効果を有する。従って、
合せ材材質が高合金であってもその熱延スケールをロー
ル塗布方式の酸洗で短時間に効率よく脱スケールできる
効果を有する。As described in detail, the device of this invention has a shot blast type scale breaking device installed upstream of the pickling tank, and scale breaking is applied to the hot rolled scale on the side of the laminate before pickling. This has the effect of significantly improving descaling properties in the pickling tank. Therefore,
Even if the laminating material is a high-alloy material, the hot-rolled scale can be efficiently descaled in a short time by pickling using a roll coating method.
また、この発明ではクラッド鋼板の片面酸洗にロール塗
布方式を採用したことにより、設備費が比較的安くつく
のみならず、酸洗液を一様に合せ材表面だけに供給付着
させることができるので、母材表面は酸液による腐蝕を
受けずに合せ材表面の熱延スケールを完全に除去できる
効果を奏する。In addition, in this invention, by adopting a roll coating method for single-sided pickling of clad steel plates, not only is the equipment cost relatively low, but also the pickling liquid can be uniformly supplied and deposited only on the surface of the cladding material. Therefore, the hot rolling scale on the surface of the laminate material can be completely removed without the surface of the base metal being corroded by the acid solution.
さらに、この発明は鋼板の搬入から下面スケールブレー
キング、酸洗、水洗、乾燥および搬出までの一連の工程
をオンライン化したことにより、クラッド鋼板の連続処
理が可能となり、比較的低廉な設備で効率よく酸洗でき
るとともに、ランニングコストも安価につく効果がおり
、クラッド鋼板の片面酸洗に多大な効果を奏するもので
ある。Furthermore, this invention makes continuous processing of clad steel plates possible by bringing the series of processes online, from carrying in the steel plates to bottom scale breaking, pickling, water washing, drying, and unloading, making it possible to process clad steel plates efficiently with relatively inexpensive equipment. It can pickle well and has the effect of reducing running costs, and is very effective for single-sided pickling of clad steel plates.
第１図はこの発明の装置構成例を示す概略平面図、第２
図は同上装置の概略縦断面図、第３図は塗布ロールの一
例を示す図で、同図ａは正面図、同図すは図ａのｂ−ｂ
線上の縦断面図である。
１・・・入口ローラテーブル、２・・・ショツトブラス
ト装置、３・・・酸洗槽、４・・・水洗装置、５・・・
乾燥装置、６・・・鋼板反転用ローラテーブル、７・・
・出口ローラテーブル、８・・・被処理鋼板。Fig. 1 is a schematic plan view showing an example of the configuration of the device of the present invention;
The figure is a schematic longitudinal cross-sectional view of the same device as above, and FIG.
It is a vertical cross-sectional view on a line. 1... Entrance roller table, 2... Shot blasting device, 3... Pickling tank, 4... Water washing device, 5...
Drying device, 6...Roller table for reversing steel plate, 7...
- Exit roller table, 8... Steel plate to be treated.
Claims (1)
レーキングする装置、スケールブレーキング後の鋼板を
、酸洗槽内の酸洗液面上に一部が露出し一部が浸漬した
ロール群上を走行させて鋼板下面のみに酸洗液を塗布す
る装置、酸洗後の鋼板を水洗する装置および水洗後の鋼
板を乾燥する装置を具備したことを特徴とするクラッド
鋼板の片面連続酸洗装置。A device that performs scale breaking by projecting an abrasive material onto the laminated material side of a clad steel plate, and a roll that partially exposes and partially immerses the steel plate on the surface of the pickling liquid in a pickling tank after scale breaking. Continuous acid pickling on one side of a clad steel plate, characterized in that it is equipped with a device for applying pickling liquid only to the lower surface of the steel plate by running on a group, a device for washing the steel plate after pickling, and a device for drying the steel plate after washing. Washing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9924286A JPS62256974A (en) | 1986-04-28 | 1986-04-28 | Continuous pickling device for one face of clad steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9924286A JPS62256974A (en) | 1986-04-28 | 1986-04-28 | Continuous pickling device for one face of clad steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62256974A true JPS62256974A (en) | 1987-11-09 |
Family
ID=14242226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9924286A Pending JPS62256974A (en) | 1986-04-28 | 1986-04-28 | Continuous pickling device for one face of clad steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62256974A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177610A (en) * | 2015-10-14 | 2015-12-23 | 苏州新协力特种工业模板有限公司 | Online acid pickling device for surface of steel plate |
-
1986
- 1986-04-28 JP JP9924286A patent/JPS62256974A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177610A (en) * | 2015-10-14 | 2015-12-23 | 苏州新协力特种工业模板有限公司 | Online acid pickling device for surface of steel plate |
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