JPS60130414A - Descaling method of steel strip - Google Patents

Descaling method of steel strip

Info

Publication number
JPS60130414A
JPS60130414A JP23884883A JP23884883A JPS60130414A JP S60130414 A JPS60130414 A JP S60130414A JP 23884883 A JP23884883 A JP 23884883A JP 23884883 A JP23884883 A JP 23884883A JP S60130414 A JPS60130414 A JP S60130414A
Authority
JP
Japan
Prior art keywords
descaling
steel strip
projection
abrasive material
strip
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.)
Granted
Application number
JP23884883A
Other languages
Japanese (ja)
Other versions
JPH0369604B2 (en
Inventor
Yoshio Shimozato
下里 省夫
Tsuneo Egawa
庸夫 江川
Tadanori Miyamoto
宮本 忠典
Koichi Ishii
功一 石井
Namio Suganuma
菅沼 七三雄
Hiroyasu Yuasa
博康 湯浅
Koji Tamada
玉田 功治
Norio Oota
太田 訓郎
Hitoshi Rokutanda
等 六反田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sintokogio Ltd
JFE Steel Corp
Mitsubishi Heavy Industries Ltd
Shinto Industrial Co Ltd
Original Assignee
Sintokogio Ltd
Mitsubishi Heavy Industries Ltd
Shinto Kogyo KK
Kawasaki Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sintokogio Ltd, Mitsubishi Heavy Industries Ltd, Shinto Kogyo KK, Kawasaki Steel Corp filed Critical Sintokogio Ltd
Priority to JP23884883A priority Critical patent/JPS60130414A/en
Publication of JPS60130414A publication Critical patent/JPS60130414A/en
Publication of JPH0369604B2 publication Critical patent/JPH0369604B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/06Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

PURPOSE:To reduce energy consumption required for blasting and to save energy loss due to mutual interference between projecting materials by providing an elongation percentage to a steel strip by stretching and bending it and descaling it by projecting a grinding and cleaning material on it. CONSTITUTION:A steel strip 1 is provided with scale breaking by a scale breaker 3 after passing a roll 2, and is sent to a grinding and cleaning chamber 5a through rolls 4 and 14. The scale breaker 3 provides >=0.4% elongation to the steel strip 1 by stretching and bending, to break the scales. The strip 1 is then descaled in the chamber 5a by projecting a grinding and cleaning material on it from projecting devices 6a, 6b. After passing through the chamber 5a, the strip 1 enters a grinding and cleaning chamber 5b again through rolls 7, 8, and is descaled again by the grinding and cleaning material projected from projecting devices 6c, 6d. Further, after passing rolls 9, 10, and 11, the strip 1 is fed to a pickling bath 13, and is perfectly descaled and then transferred to the next process through a roll 12.

Description

【発明の詳細な説明】 本発明は、プラスト時の消費エネルギを下げるとともに
、投射材どうしの干渉によるエネルギロスを少なくした
帯鋼のディスケーリング方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for descaling a steel strip that reduces energy consumption during blasting and reduces energy loss due to interference between blasting materials.

一般に、熱間圧延された帯鋼の表部にはスケールが付着
しているから、その後の冷間圧aiC備えてこのスケー
ルを除去しなければならない。
Generally, scale is attached to the surface of a hot rolled steel strip, and this scale must be removed in preparation for the subsequent cold rolling aiC.

このスケールの除去(以下、ディスケーリングという。Removal of this scale (hereinafter referred to as descaling).

)は従来よp酸洗に依存しているが、酸洗11デイスケ
ーリング能率が低く、ディスケーリング工程と冷間圧延
工程との連続化のニーズに対応しにくい欠点を有してい
る。
) has conventionally relied on p-pickling, but it has the drawback that the pickling 11-day scaling efficiency is low and it is difficult to meet the needs for continuous descaling and cold rolling processes.

かかる背景のもとに、機械的投射装置によるブラストに
よって帯鋼のディスケーリングを行なう方法が提案され
(特願昭57−127553 )、ブラストのみでディ
スケーリングする方法およびブラストの後に軽酸洗を行
なう方法をその内容とする。しかしながら、この提案は
、酸洗い程度の面粗さ【確保でき、しかも能率が向上し
てランニングコストの低減4図れる反面、エネルギロス
の問題は解決されていないのが実情である。
Against this background, a method of descaling steel strips by blasting with a mechanical projection device was proposed (Japanese Patent Application No. 57-127553). The content is the method. However, while this proposal can ensure a surface roughness comparable to pickling, improves efficiency, and reduces running costs, the reality is that it does not solve the problem of energy loss.

本発明性、かかる実情に鍜み、ブラスト時の消費エネル
ギを下げるとともに投射材どうしの干渉によるエネルギ
ーロスを少なくした帯鋼のディスケーリング方法を提供
せんとするものであって、引張カ曲げにより帯鋼に伸び
率0.4%以上を付与してスケールブレーキングすると
ともに、投射装置から投射される研掃材によpディスケ
ーリングする一方、酸洗楢管通過せしめて酸洗すること
、引張シ曲げにより帯鋼に伸び率0.44以上を付与し
てスケールブレーキングするとともに、投射装置から投
射される研掃材によpディスケーリングする一方、酸洗
槽を通過せしめて酸洗するにあたシ、前記投射装置の投
射角金90°未満に設定したこと、および引張)曲げに
よシ帝鋼に伸び率0.4%以上を付与してスケールブレ
ーキングするとともに、投射装置から投射される研掃材
によシデイスケーリングする一方、酸洗槽を通過せしめ
て酸洗するにおたp1前記投射装置の投射角【90°未
満に設定するとともに粒径的0.3關以下の前記研掃材
を投射速度的3 Q m75以上、投射距離約1000
n以内で投射することを特徴とする。
The present invention addresses the above circumstances and aims to provide a method for descaling steel strips that reduces energy consumption during blasting and reduces energy loss due to interference between blasting materials, the method being aimed at Scale breaking is applied to the steel by imparting an elongation rate of 0.4% or more, p-descaling is carried out using the abrasive material projected from the projecting device, while pickling is carried out by passing through a pickling filter pipe, and tensile steel is applied. The strip steel is subjected to scale breaking by giving an elongation rate of 0.44 or more by bending, and is subjected to p-descaling by the abrasive material projected from the projecting device, while being passed through a pickling tank to be pickled. In addition, the projection angle of the projection device was set to less than 90°, and the steel was scale-braked by giving an elongation rate of 0.4% or more to the steel during tensile bending, and the projection angle was set to less than 90°. The projection angle of the projection device is set to less than 90 degrees, and the particle diameter is 0.3 degrees or less. Projection speed of abrasive material: 3Q m75 or more, projection distance: approximately 1000
It is characterized by projecting within n.

以下、図面に示した実施例にもとすき、本発明に係る帯
鋼のディスケーリング方法について説明する。
EMBODIMENT OF THE INVENTION Hereinafter, the method of descaling a steel strip according to the present invention will be explained based on the embodiment shown in the drawings.

第1図は、本発明に係る帯鋼のディスケーリング方法を
示す概略説明図であるが、帯鋼1はロール2を通シ、ス
ケールブレーカ3でスケールブレーキングされた後、ロ
ール4および14會通って研掃室5a内に送られる。ス
ケールブレーカ3は、図示のように1帯鋼lに対し引張
り曲げを付与してスケールブレーキングを行なう形式と
なっている。帯鋼1は研掃室5a内で投射装置、本実施
例では遠心力を利用した投射装置6 a、 、 6 b
から投射される研掃材によりディスケーリングが行なわ
れる。
FIG. 1 is a schematic explanatory diagram showing a method of descaling a steel strip according to the present invention, in which a steel strip 1 is passed through rolls 2, scale-broken by a scale breaker 3, and then scale-broken by rolls 4 and 14. and is sent into the cleaning chamber 5a. As shown in the figure, the scale breaker 3 is of a type that performs scale breaking by applying tensile bending to one steel strip l. The steel strip 1 is installed in a polishing chamber 5a using a projection device, in this embodiment, a projection device 6a, 6b that utilizes centrifugal force.
Descaling is performed by abrasive material projected from the

研掃室5ata遇した帯鋼五は、ロール7゜8を通って
再び研帰室5bに入p1投射装置t6a。
The steel strip 5 that has been delivered to the grinding chamber 5a passes through the rolls 7.8 and enters the grinding chamber 5b again through the projection device t6a.

6dから投射される研掃材で再度ディスケーリングされ
る。研掃室5’bt−通過し、ロール9゜10および1
1を通った帯鋼11、酸洗槽13に入p1完全にディス
ケーリングされた後、ロール12を通って次工程へと移
行する。
It is descaled again by the abrasive material projected from 6d. Grinding chamber 5'bt - passed, rolls 9° 10 and 1
The steel strip 11 that has passed through 1 enters a pickling tank 13, where it is completely descaled, and then passes through rolls 12 to proceed to the next process.

一方、1g21にi、スケールブレーカの張力と総ディ
スケーリングエネルギとの関係【示すグラフであル、横
軸にはスケールブレーカにおける伸び率、縦軸にはエネ
ルギ比會とっている。
On the other hand, 1g21 is a graph showing the relationship between the tension of the scale breaker and the total descaling energy.The horizontal axis shows the elongation rate in the scale breaker, and the vertical axis shows the energy ratio.

エネルギ比抹、 で表わされるから、第2図により、伸び率0.4−以上
でエネルギ比は1以下、すなわちスケールブレーカ全組
合わせた方が有利であることが示され、伸び率が8%ま
では伸び率に従ってエネルギ比が低下することが示され
ている。要するに1スケールブレーカをかけることによ
りブラスト時にスケールが剥離しやすくなり、ブラスト
時のディスケーリングエネルギが低下する。
Since the energy ratio is expressed as, Figure 2 shows that when the elongation rate is 0.4 or more, the energy ratio is less than 1, that is, it is more advantageous to combine all scale breakers, and the elongation rate is 8%. It has been shown that the energy ratio decreases according to the elongation rate. In short, by applying a 1-scale breaker, the scale is easily peeled off during blasting, and the descaling energy during blasting is reduced.

したがって、ブラストのみでディスケーリングする場合
よりスケールブレーカとブラストとの組合せによシ伸び
率014s以上の条件下でディスケーリングする方が総
ディスケーリングエネルギ(スケールブレーカの消費エ
ネルギーロストの消費エネルギ)の面で有利である。
Therefore, in terms of total descaling energy (energy consumption of scale breaker energy lost), descaling using a combination of scale breaker and blasting under the condition of elongation rate of 014s or more is better than descaling with blasting alone. It is advantageous.

第8図は、本発明に係る帯鋼のディスケーリング方法の
他の実施例を示す概略説明図であるが、第1図に示す実
施例において投射装置6&〜6dの回転軸を帯鋼1に対
し投射角θが0く900となるように設定したものであ
る。このように投射角#七〇<90°に設定すると、第
4図に示すように、研掃材15どおしの衝突によるエネ
ルギロス?防止することができる。すなわち第4図(a
)に示すように帯鋼1と投射装置6とを相対向せしめる
と(θ=90°)、投射され九研掃材15it帯鋼lに
衝突した後に上方へ反射し、この反射が研掃材15の入
射コースとほぼ同一コースとなるため、後から投射され
た研掃材15と衝突する確率が極めて高くなる。しかし
ながら、第4図(b)に示すようにθ〈90°となるよ
うに投射角上設定すると、研掃材15の入射方向と反射
方向が異なるようになり、研掃材15どおしの衝突する
確率が極めて低くなってエネルギロスを少なくすること
が可能となる。
FIG. 8 is a schematic explanatory diagram showing another embodiment of the method for descaling a steel strip according to the present invention. In the embodiment shown in FIG. On the other hand, the projection angle θ is set to be 0 to 900. If the projection angle #70<90° is set in this way, as shown in FIG. 4, energy loss due to collision between the abrasive materials 15? It can be prevented. In other words, Fig. 4 (a
), when the steel strip 1 and the projection device 6 are made to face each other (θ = 90°), the projected material collides with the 9 abrasive material 15-it steel strip 1 and is reflected upward, and this reflection is reflected upward from the abrasive material. 15, the probability of collision with the abrasive material 15 projected later is extremely high. However, if the projection angle is set to θ<90° as shown in FIG. 4(b), the incident direction and reflection direction of the abrasive material 15 will be different, and the The probability of collision is extremely low, making it possible to reduce energy loss.

一方、第5図(a)は、研掃材15の粒径と帯鋼1の単
位面積ヲ完全にディスケーリングするために必要な投射
エネルギ及びプラスト後の帯鋼1表面の面粗さとの関係
を示すグラフであるが、ここで、研掃材15の投射速度
は7 Q m/j 、投射距離は500鮨である。酸洗
いによシブイスクーリングした場合の帯鋼10面粗さi
t: Rmax 15μであるので、これをしのぐ丸め
には、この図よp研掃材15の粒径1kQ、 3 xm
以下とする必要があることがわかる。また、ランニング
コストを酸洗いと同等以下にするためには、投射エネル
ギ七86X10JA’以下にする必要があるが、これは
研掃材150粒径t−0,32m以下にすることで実現
できる。ただし、研掃材15の粒径が0106關以下に
なると、投射エネルギが36X10JAI會越え、ラン
ニングコストが酸洗いによる場合より高くなってしまう
。以上より、研掃材15の粒径をQ、 3 rim以下
とし、且つ0.06iiIg以上にすれに面粗さ及びコ
ストともに酸洗いをしのぐことができる。好ましくは、
研掃材15の粒径t0.1〜O,125mm+にすれば
、投射エネルギが最も少ない範囲になシ、コスト的に有
利である。
On the other hand, FIG. 5(a) shows the relationship between the grain size of the abrasive material 15, the projection energy required to completely descale the unit area of the steel strip 1, and the surface roughness of the surface of the steel strip 1 after blasting. Here, the projection speed of the abrasive material 15 is 7 Q m/j, and the projection distance is 500 m/j. Roughness i of the 10th surface of the strip steel when it is cooled by pickling
t: Rmax is 15μ, so to round it up, the particle size of the p-abrasive material 15 is 1kQ, 3xm as shown in this figure.
It turns out that it is necessary to do the following. Furthermore, in order to reduce the running cost to the same level as pickling or less, it is necessary to reduce the projected energy to 786 x 10 JA' or less, which can be achieved by reducing the particle size of the abrasive material to 150 t-0, 32 m or less. However, if the particle size of the abrasive material 15 is less than 0.106 mm, the projected energy will exceed 36 x 10 JAI, and the running cost will be higher than when pickling is used. From the above, it is possible to make the particle size of the abrasive material 15 below Q, 3 rim and to exceed 0.06iiIg, thereby surpassing pickling in both surface roughness and cost. Preferably,
If the particle diameter of the abrasive material 15 is set to t0.1 to 0.125 mm+, the projected energy is in the lowest range, which is advantageous in terms of cost.

第5図(b)には、研掃材15の粒径f 0.2 am
、投射距離t−500171とし、投射エネルギ全一定
(24X10 Jβ)とした場合の投射速度とディスケ
ーリング率(スケールが除去された体積割合)及び面粗
さとの関係が示されるが、ディスケーリング効果は、投
射速度が49 m/B以下になると低下するが、投射速
度30 fV′8までは5チ程度の低下しか認められな
い。一方、面粗さが酸洗いによる場合の帯鋼10面粗さ
くここでは、前述の通j) 、Rmax 15μ とす
る。)をしのぐことができるのは、投射速度が100m
/2+以下の場合である。よって、研掃材15の投射速
度が30fル/8〜100m/sの範囲であれば、能率
良く且つ爾粗さも酸洗いによる場合をしのぐことができ
る。ただし、投射速度が80 m/sを越えると、研掃
拐15の消耗が多くな夛、かつ、帯鋼1表面の加工硬化
も増えてくるため、前述のディスケーリング効果が十分
発揮される投射速度406z/sと併わせて、好ましく
は投射速度40〜80m7Bである。
FIG. 5(b) shows the particle size f 0.2 am of the abrasive material 15.
, the relationship between the projection speed, descaling rate (volume ratio from which scale is removed), and surface roughness is shown when the projection distance is t-500171 and the projection energy is all constant (24X10 Jβ), but the descaling effect is , it decreases when the projection speed becomes 49 m/B or less, but a decrease of only about 5 inches is observed up to a projection speed of 30 fV'8. On the other hand, the surface roughness of the steel strip 10 obtained by pickling is set to the above-mentioned standard j) and Rmax of 15μ. ) can be surpassed by a projection speed of 100 m.
/2+ or less. Therefore, if the projection speed of the abrasive material 15 is in the range of 30 f/8 to 100 m/s, it is possible to improve efficiency and reduce roughness compared to pickling. However, if the projection speed exceeds 80 m/s, the abrasive blade 15 will be worn out and the work hardening of the surface of the steel strip 1 will also increase. Together with the speed of 406z/s, the projection speed is preferably 40 to 80 m7B.

第5図(c)には、研掃材15の粒径0.211、投射
エネルギを一定(24X10J、イ)とし、投射距離(
機械的投射装置6のインペラ、即ち研掃桐15を投射す
るための回転体の外周と帯鋼1との間の最短距離)とデ
ィスケーリング効果との関係をめた結果である。投射距
離が800關を越えると、ディスケーリング効果が低下
し始Wンるが、投射距離100100Oまではディスケ
ーリング効果のlJx’Fは5優程度である。よって、
投射距離は約1000m以下とすればよいのである。
In Fig. 5(c), the particle size of the abrasive material 15 is 0.211, the projection energy is constant (24X10J, A), and the projection distance (
This is the result of determining the relationship between the impeller of the mechanical projection device 6 (ie, the shortest distance between the outer periphery of the rotating body for projecting the abrasive paulownia 15 and the steel strip 1) and the descaling effect. When the projection distance exceeds 800 degrees, the descaling effect starts to decrease, but up to a projection distance of 100,100 degrees, the descaling effect lJx'F is about 5 points. Therefore,
The projection distance may be approximately 1000 m or less.

研掃徊15として粒径0.3趨以下の微細粒とした場合
には干渉によるエネルギロスを特に問題とする必要があ
り、第3図に示す実施例と組合わせるとその相乗効果を
期待することができる。この意味において投射装置60
投射角ヲ90゜未満に設定するとともに粒径約03龍以
下の研掃材15會投射速度約30 m/s以上、投射距
離約10000以内で投射することは有効である。
When using fine grains with a grain size of 0.3 or less as the polishing process 15, energy loss due to interference must be taken into account, and a synergistic effect is expected when combined with the embodiment shown in Fig. 3. be able to. In this sense, the projection device 60
It is effective to set the projection angle to less than 90 degrees, and to project the abrasive material with a particle size of about 0.3 mm or less, a projection speed of about 30 m/s or more, and a projection distance of about 10,000 mm or less.

以上、図面に示した実施例にもとすいて詳細に説明し友
ように、本発明に係る帯鋼のディスケーリング方法によ
れば、プ′ラスト時の消費エネルギを下げることができ
るとともに、投射材とおしの干渉によるエネルギロスを
少なくすることができる。
As described above in detail with reference to the embodiments shown in the drawings, according to the method of descaling a steel strip according to the present invention, it is possible to reduce the energy consumption during blasting, and also to Energy loss due to interference between the material and the shear can be reduced.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係る帯鋼のデイスケーリン夕方法を示
す概略説明図、第2図はスケールブレーカの張力と総デ
ィスケーリングエネルギとの関係を示すグラフ、第3図
は本発明に係る帯鋼のディスケーリング方法の他の実施
例を示す概略説明図、第4図(11(b)は研掃材の衝
突の状態を示す説明図、第5図(a)は研掃材粒径と投
射エネルギ及びブラスト後の帯鋼表面の面粗さとの関係
を示すグラフ、ls5図(b)は投射エネルギを一定と
し’It 場合の投射速度とディスケーリング率及び面
粗さとの関係を示すグラフ、第5図(C)は投射距離と
ナイスケーリングとの関係金示すグラフである。 l・・・帯鋼 3・・スケールブレーカ6(6a〜6d
)・・・投射装置 13・・・酸洗槽15・・研掃材 特許出願人 三菱重工業株式会社(他2名)儂(tJ!
liべ弁理士 光 石 士 部(他1名)11− 第1図 第2図 0 / 2 J 4 5 6 7 8 9 IQスゲ−
Iし7レニカ・(あIrb I19 ’1”−9/%)
第5図 (a) (b) 第5図 (C) 80 −一一一−−−−−−ゝゝゝゝゝ\ゝ6゜ 衾4O ′ト、。 ↑YIIT走乃し 75 罪krg陣へ〜
FIG. 1 is a schematic explanatory diagram showing a method for descaling a steel strip according to the present invention, FIG. 2 is a graph showing the relationship between scale breaker tension and total descaling energy, and FIG. 3 is a diagram showing a method for descaling a steel strip according to the present invention. A schematic explanatory diagram showing another example of the steel descaling method, FIG. A graph showing the relationship between the projection energy and the surface roughness of the strip steel surface after blasting, ls5 (b) is a graph showing the relationship between the projection speed, descaling rate, and surface roughness when the projection energy is constant. FIG. 5(C) is a graph showing the relationship between projection distance and Ny scaling. l... Steel strip 3... Scale breaker 6 (6a to 6d)
)... Projection device 13... Pickling tank 15... Abrasive material patent applicant Mitsubishi Heavy Industries, Ltd. (2 others) Me (tJ!)
Libe patent attorney Mitsuishi Shibu (and 1 other person) 11- Figure 1 Figure 2 0 / 2 J 4 5 6 7 8 9 IQ amazing -
I7 Renika (A Irb I19 '1''-9/%)
Figure 5 (a) (b) Figure 5 (C) 80 -111------ゝゝゝゝゝ\ゝ6゜衾4O'To,. ↑YIIT Hashinoshi 75 To the sin KRG team~

Claims (1)

【特許請求の範囲】 +11 引張シ曲げによp帯鋼に伸び率0.411以上
を付与してスケールブレーキングするとと%K。 投射装置から投射される研掃材によ)ディスケーリング
する一方、酸洗槽を通過せしめて酸洗するととt4I做
とする帯鋼のディスケーリング方法。 (2) 引張1曲げにより帯鋼に伸び率0.4−以上1
1与してスケールブレーキングするとともに、投射装置
から投射される研掃材によシデイスケーリングする一方
、酸洗槽上通過せしめて酸洗するKあたル、前記投射装
置の投射角t90°未満に設定したことt特徴とする帯
鋼のディスケーリング方法。 (3)引11り曲げによp帯鋼に伸び率0.4 %以上
を付与してスケールブレーキングするとともに、投射装
置から投射される研掃材によ)ディスケーリングする一
方、酸洗槽を通過せしめて酸洗すゐにあたシ、前記投射
装置の投射角を900未満に設定するとともに粒径約0
.3關以下の前記研掃材を投射速度的30 m/a以上
、投射距離約1000鴎以内で投射することを特徴とす
る帯鋼のディスケーリング方法。
[Claims] +11 When scale breaking is performed by imparting an elongation rate of 0.411 or more to P-strip steel by tensile bending, %K. A method for descaling a steel strip by descaling it (with an abrasive material projected from a projection device) and passing it through a pickling tank to pickle it. (2) Tensile 1 bending gives the steel strip an elongation rate of 0.4-1
The abrasive material projected from the projection device performs scale breaking, and the abrasive material is passed over the pickling tank for pickling.The projection angle of the projection device is t90°. A descaling method for steel strip, characterized in that the descaling method is set to less than t. (3) Scale breaking is applied to the P-strip steel by applying elongation of 0.4% or more by bending, and descaling is performed (by abrasive material projected from a projecting device), while a pickling tank is applied. For pickling, the projection angle of the projection device is set to less than 900, and the particle size is about 0.
.. A method for descaling a steel strip, characterized in that the abrasive material is projected at a projection speed of 30 m/a or more and at a projection distance of about 1000 m/a or less.
JP23884883A 1983-12-20 1983-12-20 Descaling method of steel strip Granted JPS60130414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23884883A JPS60130414A (en) 1983-12-20 1983-12-20 Descaling method of steel strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23884883A JPS60130414A (en) 1983-12-20 1983-12-20 Descaling method of steel strip

Publications (2)

Publication Number Publication Date
JPS60130414A true JPS60130414A (en) 1985-07-11
JPH0369604B2 JPH0369604B2 (en) 1991-11-01

Family

ID=17036162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23884883A Granted JPS60130414A (en) 1983-12-20 1983-12-20 Descaling method of steel strip

Country Status (1)

Country Link
JP (1) JPS60130414A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5590703A (en) * 1995-04-17 1997-01-07 Eckert; C. Edward Aluminum surface treatment
US5863347A (en) * 1996-02-08 1999-01-26 Sumitomo Heavy Industries, Ltd. Pickling method of metal plate
JP2008207203A (en) * 2007-02-26 2008-09-11 Jfe Steel Kk Stainless steel strip, and method for manufacturing stainless steel strip
CN113857271A (en) * 2020-06-30 2021-12-31 宝山钢铁股份有限公司 Strip steel jet flow descaling process control method, control device and equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5172928A (en) * 1974-12-21 1976-06-24 Nippon Steel Corp Netsuenkohan oyobi kotaino hyomenshoriho
JPS5187133A (en) * 1975-01-29 1976-07-30 Hitachi Ltd SHODONSAN SENSOCHI
JPS5775216A (en) * 1980-10-28 1982-05-11 Sumitomo Metal Ind Ltd Descaling method for steel sheet
JPS57200573A (en) * 1981-06-04 1982-12-08 Kawasaki Steel Corp Continuous pickling method of ferrite and martensite stainless hot rolled steel band for preventing surface from being flawed

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5172928A (en) * 1974-12-21 1976-06-24 Nippon Steel Corp Netsuenkohan oyobi kotaino hyomenshoriho
JPS5187133A (en) * 1975-01-29 1976-07-30 Hitachi Ltd SHODONSAN SENSOCHI
JPS5775216A (en) * 1980-10-28 1982-05-11 Sumitomo Metal Ind Ltd Descaling method for steel sheet
JPS57200573A (en) * 1981-06-04 1982-12-08 Kawasaki Steel Corp Continuous pickling method of ferrite and martensite stainless hot rolled steel band for preventing surface from being flawed

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5590703A (en) * 1995-04-17 1997-01-07 Eckert; C. Edward Aluminum surface treatment
US5863347A (en) * 1996-02-08 1999-01-26 Sumitomo Heavy Industries, Ltd. Pickling method of metal plate
JP2008207203A (en) * 2007-02-26 2008-09-11 Jfe Steel Kk Stainless steel strip, and method for manufacturing stainless steel strip
CN113857271A (en) * 2020-06-30 2021-12-31 宝山钢铁股份有限公司 Strip steel jet flow descaling process control method, control device and equipment
CN113857271B (en) * 2020-06-30 2024-04-05 宝山钢铁股份有限公司 Strip steel jet flow descaling process control method, control device and equipment

Also Published As

Publication number Publication date
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