JPH01178312A - Descaling apparatus for hot rolled stock - Google Patents

Descaling apparatus for hot rolled stock

Info

Publication number
JPH01178312A
JPH01178312A JP33577487A JP33577487A JPH01178312A JP H01178312 A JPH01178312 A JP H01178312A JP 33577487 A JP33577487 A JP 33577487A JP 33577487 A JP33577487 A JP 33577487A JP H01178312 A JPH01178312 A JP H01178312A
Authority
JP
Japan
Prior art keywords
spray header
pressure water
spray
scale
descaling
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
Application number
JP33577487A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Okita
沖田 美幸
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP33577487A priority Critical patent/JPH01178312A/en
Publication of JPH01178312A publication Critical patent/JPH01178312A/en
Pending 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
    • B21B45/08Devices 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 hydraulically

Abstract

PURPOSE:To reduce surface flaws of rolled stock by providing a pair of upper and lower spray headers capable of lifting respectively and disposing independent opening and shutting valves respectively for each spray nozzle in a high pressure water piping system of spraying headers. CONSTITUTION:A fixing bed 2 of the upper spray header capable of lifting is provided on a planer-type frame 1 and the upper spray header 3 capable of lifting is disposed on the fixing bed 2. The lower spray header 5 capable of lifting is disposed on a fixed column 4, and further, the independent opening and shutting valves are disposed for each spray nozzle 9 respectively in the high pressure water feeding piping system for each spray header 3, 5. The fixing bed 2 and the spray headers 3, 5 are lifted respectively. Corresponding to the exfoliation property of the scale of the rolled stock 1, the fixing fed 2 and spray headers 3, 5 are lifted or lowered and the opening and shutting valves of the nozzles 9 are controlled to open and to shut respectively and to select the number of the high pressure water spraying nozzles 9. Because the scale of the rolled stock 1 is surely removed, the generation of the surface flaws of the product is reduced.

Description

【発明の詳細な説明】[Detailed description of the invention]

[産業上の利用分野] この発明は熱間圧延ラインにおけるデスケーリング性能
の向上をはかる高温圧延材のデスケーリング装置に関す
る。 [従来の技術] 熱間圧延ラインにおいて、加熱された圧延材は表面に1
次スケールが付着しており、また圧延中にも時間の経過
とともに該圧延材表面に2次スケールが生じる。スケー
ルの付着した高温圧延材をそのまま圧延すればスケール
押込みにより製品に表面疵を生じる原因となるため、例
えば連続式の熱間圧延機では粗圧延機の直前と、仕上圧
延機の直紡にデスケーリング装置を設置して脱スケール
を施し成品の品質を確保するようにしている。 このデスケール手段として、従来は100〜200kg
4の高圧水を圧延材に噴射する方法が一般的である。こ
の外、ブラシロールによって表面を引き掻いて除去する
方法、ショットを表面に吹付けて除去する方法、ローラ
レベラで圧延材に歪みを付与した俊デスケーリングする
方法(特開昭57−36013号公報)も知られている
[Industrial Application Field] The present invention relates to a descaling device for high temperature rolled material that improves descaling performance in a hot rolling line. [Prior art] In a hot rolling line, a heated rolled material has a surface of 1
Secondary scale is attached, and secondary scale also occurs on the surface of the rolled material over time during rolling. If a high-temperature rolled material with scale attached is rolled as it is, the scale will be pushed in, causing surface defects on the product. For example, in a continuous hot rolling mill, there are A scaling device is installed to remove scale and ensure the quality of the finished product. Conventionally, this descaling means is 100 to 200 kg.
A common method is to inject high-pressure water into the rolled material. In addition, there is a method of removing the surface by scratching it with a brush roll, a method of removing it by spraying shot onto the surface, and a method of descaling the rolled material by applying distortion to the rolled material using a roller leveler (Japanese Unexamined Patent Publication No. 57-36013). is also known.

【発明が解決しようとする問題点】[Problems to be solved by the invention]

しかし、これら従来手段のうち、高圧水による場合は圧
延材の材質によってはスケールの完全除去が困Hな場合
がある。すなわち、従来の高圧水噴射デスケーリング装
置は高圧水を噴射するデスケーリングへラダーが固定式
でおり、圧延材表面との距離が常に一定であるとともに
、複数本の噴射ノズルを選択使用できない構造となって
いる。 一方、熱間圧延材のスケールは材質によって異なり、低
炭材の場合は易剥離性スケールであるのに対し、高SL
系の低次、中炭材等の場合は難剥離性スケールである。 したがって、従来のような高圧水噴射ノズルと圧延材表
面との距離が常に一定で、かつ噴射ノズルを選択使用で
きないデスケーリング装置の場合、スケールの剥離性を
無視してデスケーリングが行なわれるために、易剥離性
スケールの場合は過度に高圧水を使用することになり不
経済でおり、また難剥離性スケールについては高圧水不
足となり十分に剥離することができずにスケールが残存
する場合があり、スケール押込み疵を生ぜしめて製品の
品質を低下させるという問題があった。 この発明は従来の前記高圧水によるデスケーリング装置
の欠点を解消するためになされたもので、スケール剥離
性に対応できる高圧水デスケーリング装置を提案せんと
するものである。
However, among these conventional means, when using high-pressure water, it may be difficult to completely remove scale depending on the material of the rolled material. In other words, in conventional high-pressure water injection descaling equipment, the ladder for descaling that injects high-pressure water is fixed, the distance from the surface of the rolled material is always constant, and the structure does not allow for selective use of multiple injection nozzles. It has become. On the other hand, the scale of hot-rolled materials differs depending on the material, and while low carbon materials have easily peelable scales, high SL
In the case of low-order or medium-carbon materials, the scale is difficult to peel off. Therefore, in the case of conventional descaling equipment in which the distance between the high-pressure water injection nozzle and the surface of the rolled material is always constant and the injection nozzle cannot be selectively used, descaling is performed ignoring the peelability of scale. In the case of easy-to-remove scale, excessively high-pressure water is used, which is uneconomical, and in the case of difficult-to-remove scale, there may be a lack of high-pressure water and the scale may not be able to be removed sufficiently and the scale may remain. There was a problem in that scale intrusion defects were caused and the quality of the product was degraded. This invention was made in order to eliminate the drawbacks of the conventional descaling apparatus using high-pressure water, and aims to propose a high-pressure water descaling apparatus that can cope with scale removal properties.

【問題点を解決するための手段】[Means to solve the problem]

この発明は従来の前記問題点を解決する手段として、高
圧水噴射ノズルの高さ位置を任意に変えられるようにデ
スケーリングヘッダーを昇降可能となし、ざらに各噴射
ノズル毎に開閉弁を設けて高圧水噴射ノズルを選択使用
できるようにすることによって、スケール剥離性に応じ
てデスケーリングヘッダーの高さを調整するとともに、
噴射ノズルの使用本数を選択してデスケーリングできる
ようにしたものである。 すなわら、この発明に係るデスケーリング装置は、複数
の高圧水噴射ノズル群を備えた上F一対のスプレーヘッ
ダーがそれぞれ昇降可能となし、上面側スプレーヘッダ
ーは熱間圧延ラインに跨設した門形架台に昇降可能に支
持され、下面側スプレーヘッダーは圧延材搬送用テーブ
ルローラ間に設けた固定支柱に昇降可能に支持され、上
下台スプレーヘッダーの高圧水供給配管系に各噴射ノズ
ル毎に独立して開閉弁を設けたことを特徴とするもので
ある。 [作  用] 第1図はこの発明の好適な装置構成を示す概略図、第2
図は同上装置の高圧水供給配管系を示す模式図である。 すなわち、この発明に係るデスケーリング装置は大きく
分けて、門形架台(1)、上スプレーヘッダー固定台(
2)、上スプレーヘッダー(3)、下スプレーヘッダー
固定支柱(4)、下スプレーヘッダー(5)とから構成
され、門形架台(1)は熱間圧延ラインに跨設されてお
り、該架台の垂直支柱に沿って上スプレーヘッダー固定
台(2)がサポートローラ(6)を介して昇降可能に嵌
り、架台天井部に設置したモーター駆動式昇降装置(7
)にて該スプレーヘッダー固定台(2)が昇降する構造
となし、このスプレーヘッダー固定台(2)に上スプレ
ーヘッダー(3)がモーター駆動式昇降装置(8)にて
昇降可能に吊設されている。(9)は高圧水噴射ノズル
である。一方、下スプレーヘッダー(5)はテーブルロ
ーラ(10)間に設置した固定支柱(10に昇降可能に
嵌り、該スプレーヘッダーに設置した昇降装置(11)
にて昇降する構造となっている。 なお、上スプレーヘッダー固定台(2)は上スプレーヘ
ッダー(3)と圧延材(11)表面との距離を調整する
ために設けたものであり、下端に圧延材(13)と接す
る位置決め用ガイドローラ(6−1)を備えている。す
なわち、圧延材の上面は厚さ、上反り等により変化する
ためこの変化に対応してスプレーヘッダー(3)の高さ
位置を設定しなければならない。 そのため、スプレーヘッダー固定台(2)にて圧延材(
11)の上面位置を検知できるようにするとともに、該
ヘッダー固定台(2)にスプレーヘッダー(3)を昇降
可能に設けて該スプレーヘッダー(3)の高さを調整で
きるようにしたのでおる。一方、下面側はテーブルロー
ラ(10)に対する距離によって圧延材下面との距離を
調整できるので、上記のような圧延材位置検知手段を設
ける必要はない。 上記上スプレーヘッダー(3)および下スプレーヘッダ
ー(5)への高圧水供給配管系は第2図に示すように、
本管(14)より枝管(15)を介して各噴射ノズル(
9)に分岐配管し、各枝管(15)に独立して開閉弁(
17)を設けて、噴射ノズルの使用本数を増減できるよ
うに構成している。(16)は主開閉弁である。 上記装置により高温圧延材のデスケーリングを行なう場
合は、当該圧延材のスケール剥離性に応じて上スプレー
ヘッダー(3)の高さを決定する。その場合、まず昇降
装置(7)にてスプレーヘッダー固定台(2)を下降さ
せてガイドローラ(9)を圧延材(11)の表面に当接
させて上面位置を検知する。そして、例えば難剥離性ス
ケールの場合は、ガイドローラ(9)が圧延材(11)
に当接した状態で昇降装置(8)にてスプレーヘッダー
(3)を下降させて圧延材(11)に接近させて所定の
高さに位置させる。次に、高圧水の噴射角度から生じる
スプレーヘッダー接近によるスプレー範囲の減少をカバ
ーするため、圧延材全幅をカバーできる高圧水噴射ノズ
ル(9)の使用本数を決定(増加)し、その決定した本
数の噴射ノズルの開閉弁(17)を開にしてデスケーリ
ングを開始する。一方、下面側は昇降装置(11)にて
圧延材下面との距離を調整してスプレーヘッダー(5)
の高さ位置を決定し、デスケーリングを行なう。 また、易剥離性スケールの場合も同様、スプレーヘッダ
ー(3X5)を所定の高さに位置させるとともに、高圧
水噴射ノズル(9)の使用本数を決定(減少)し開閉弁
を操作してデスケーリングを行なう。 本装置は第3図に示すように、熱間圧延ラインにおける
粗圧延機(20)の上流側および仕上圧延1(21)の
上流側に設置する。すなわち、まず粗圧延1(20)の
上流側に設置した高圧水噴射デスケーリング装置(22
)により1次スケールが剥離除去され、粗圧延1!(2
0)を出た後に生じた2次スケールが高圧水噴射デスケ
ーリング装置(22)により剥離除去されて仕上圧延@
(21)に入るのである。
This invention solves the above-mentioned conventional problems by making the descaling header movable up and down so that the height position of the high-pressure water injection nozzle can be changed arbitrarily, and by providing an on-off valve for each injection nozzle. By making it possible to selectively use a high-pressure water injection nozzle, the height of the descaling header can be adjusted according to scale removal properties, and
The number of injection nozzles used can be selected and descaled. In other words, the descaling device according to the present invention has a pair of upper F spray headers each equipped with a plurality of high-pressure water injection nozzle groups that can be raised and lowered, and the upper spray header is connected to a gate installed over a hot rolling line. The lower side spray header is supported so as to be able to go up and down on a fixed column installed between table rollers for conveying rolled material, and the high-pressure water supply piping system of the upper and lower spray headers is supported independently for each injection nozzle. It is characterized by being provided with an on-off valve. [Function] FIG. 1 is a schematic diagram showing a preferred device configuration of the present invention, and FIG.
The figure is a schematic diagram showing the high-pressure water supply piping system of the same device. That is, the descaling device according to the present invention can be broadly divided into a portal mount (1), an upper spray header fixing pedestal (
2), consists of an upper spray header (3), a lower spray header fixing column (4), and a lower spray header (5), and the portal frame (1) is installed astride the hot rolling line. An upper spray header fixing stand (2) is fitted along the vertical support of the frame so that it can be raised and lowered via support rollers (6), and a motor-driven lifting device (7) installed on the ceiling of the stand is fitted.
), and the upper spray header (3) is suspended from the spray header fixing base (2) so that it can be raised and lowered by a motor-driven lifting device (8). ing. (9) is a high pressure water injection nozzle. On the other hand, the lower spray header (5) is movably fitted into a fixed support (10) installed between the table rollers (10), and a lifting device (11) installed on the spray header.
The structure is such that it goes up and down. The upper spray header fixing base (2) is provided to adjust the distance between the upper spray header (3) and the surface of the rolled material (11), and has a positioning guide in contact with the rolled material (13) at the lower end. It is equipped with a roller (6-1). That is, since the upper surface of the rolled material changes depending on the thickness, warpage, etc., the height position of the spray header (3) must be set in accordance with these changes. Therefore, the rolled material (
11) The top surface position of the spray header (3) can be detected, and the spray header (3) is provided on the header fixing base (2) so as to be movable up and down, so that the height of the spray header (3) can be adjusted. On the other hand, since the distance between the lower surface side and the lower surface of the rolled material can be adjusted by adjusting the distance to the table roller (10), there is no need to provide the above-mentioned rolled material position detection means. The high pressure water supply piping system to the above upper spray header (3) and lower spray header (5) is as shown in Figure 2.
Each injection nozzle (
9), and each branch pipe (15) is equipped with an independent on-off valve (
17) so that the number of injection nozzles used can be increased or decreased. (16) is the main on-off valve. When descaling a high temperature rolled material using the above apparatus, the height of the upper spray header (3) is determined depending on the scale removability of the rolled material. In that case, first, the spray header fixing base (2) is lowered using the lifting device (7), and the guide roller (9) is brought into contact with the surface of the rolled material (11) to detect the upper surface position. For example, in the case of a difficult-to-peel scale, the guide roller (9) is attached to the rolled material (11).
While in contact with the spray header (3), the elevating device (8) lowers the spray header (3) to approach the rolled material (11) and position it at a predetermined height. Next, in order to compensate for the reduction in the spray range due to the approach of the spray header caused by the injection angle of high-pressure water, the number of high-pressure water injection nozzles (9) to be used that can cover the entire width of the rolled material is determined (increased), and the determined number Descaling is started by opening the on-off valve (17) of the injection nozzle. On the other hand, on the lower side, adjust the distance to the lower surface of the rolled material using the lifting device (11) and install the spray header (5).
Determine the height position of and perform descaling. Similarly, in the case of easily peelable scale, descaling is performed by positioning the spray header (3 x 5) at a predetermined height, determining (reducing) the number of high-pressure water injection nozzles (9) to be used, and operating the on-off valve. Do this. As shown in FIG. 3, this apparatus is installed upstream of the rough rolling mill (20) and upstream of the finishing rolling mill 1 (21) in a hot rolling line. That is, first, a high-pressure water injection descaling device (22) installed upstream of the rough rolling 1 (20) is used.
), the primary scale is peeled off and removed, and rough rolling 1! (2
0) is peeled off and removed by the high-pressure water jet descaling device (22) and finished rolling @
It falls into (21).

【実 施 例】【Example】

第3図に示す熱間圧延ラインにおいて、幅800〜16
50mm、厚さ270〜25mm、設定温度1300〜
1100℃の高温圧延材(低次材一般、高SL材低次、
高SL材中炭)を、下記に示す条件でデスケーリングを
行なった結果、第1表にスケール除去率を従来と比較し
て示すとおり、仕上圧延後の製品のスケール発生率を大
幅に減少することができた。なお、従来はいずれも圧延
材と上スプレーヘッダーとの距離25On+m一定、下
スプレーヘッダーとの距離250mm一定、使用ヘッダ
ー数5本であった。 〈デスケーリング条件〉 ○ 高圧水圧カニ 150ki4 0 スプレーヘッダー二上下各5本、噴射角度12度、
ノズル間隔100mm ○ 圧延材とスプレーヘッダーとの距離、ノズル本数 A低次材一般二上250mm、下250nnr+、  
3本B高SL材低次二上150mm、下150mm、 
 4本C高Si、材中炭二上 70mm、下 70mm
、  5本以下余白 第  1  表 以下余白 (発明の効果】 以上説明したごとく、この発明装置はデスケーリングヘ
ッダーを昇降可能となすとともに、高圧水噴射ノズルの
本数を選択できるように構成し、高圧水スプレーの距離
調整機能と噴射ノズル数の増減機能を備えたことにより
、−数似炭材のようなスケール剥離が比較的容易な材料
と高SL材のような難剥離性スケールの材料とを使い分
け、効率のよいデスケーリングを行なうことができ、ス
ケールに起因する表面疵を大幅に減少でき、品質の向上
に大なる効果を奏するものである。
In the hot rolling line shown in Fig. 3, the width is 800 to 16 mm.
50mm, thickness 270~25mm, set temperature 1300~
1100℃ high-temperature rolled materials (general low-order materials, high SL materials, low-order materials,
As a result of descaling the high SL material (medium coal) under the conditions shown below, the scale generation rate of the product after finish rolling was significantly reduced, as shown in Table 1 comparing the scale removal rate with the conventional method. I was able to do that. In addition, conventionally, the distance between the rolled material and the upper spray header was constant at 25 On+m, the distance from the lower spray header was constant at 250 mm, and the number of headers used was 5. <Descaling conditions> ○ High pressure water pressure crab 150ki4 0 Spray header 2, 5 each on top and bottom, spray angle 12 degrees,
Nozzle spacing 100mm ○ Distance between rolled material and spray header, number of nozzles A Low order materials general 2 upper 250mm, lower 250nnr+
3 pieces B high SL material low second upper 150mm, lower 150mm,
4 pieces C high Si, charcoal in the material 2nd upper 70mm, lower 70mm
, 5 or less margins, 1st table, below margins (Effects of the Invention) As explained above, this inventive device allows the descaling header to be raised and lowered, and is configured so that the number of high-pressure water injection nozzles can be selected. Equipped with a spray distance adjustment function and a function to increase/decrease the number of injection nozzles, it is possible to use materials that are relatively easy to peel off scale, such as carbonaceous materials, and materials that are difficult to peel off, such as high SL materials. , efficient descaling can be performed, surface defects caused by scale can be significantly reduced, and the quality can be greatly improved.

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

第1図はこの発明の好適な装置構成例を示す概略図であ
る。 第2図は同上装置の高圧水供給配管系を示す模である。 第3図は本装置を設置した熱間圧延ラインの一例を示す
概略図である。 1・・・門形架台 2・・・上スプレーヘッダー固定台 3・・・上スプレーヘッダー 5・・・下スプレーヘッダー 7.8.11・・・昇降装置 出願人  住友金属工業株式会社 代理人  弁理士 押田良久−講
FIG. 1 is a schematic diagram showing an example of a preferred device configuration of the present invention. FIG. 2 is a model showing the high-pressure water supply piping system of the same device. FIG. 3 is a schematic diagram showing an example of a hot rolling line in which the present apparatus is installed. 1...Portal mount 2...Upper spray header fixing base 3...Upper spray header 5...Lower spray header 7.8.11...Elevating device Applicant Sumitomo Metal Industries Co., Ltd. Agent Patent attorney Professor Yoshihisa Oshida

Claims (1)

【特許請求の範囲】[Claims] 熱間圧延ラインにおける高圧水デスケーリング装置であ
つて、複数の高圧水噴射ノズル群を備えた上下一対のス
プレーヘッダーがそれぞれ昇降可能となし、前記上面側
スプレーヘッダーは熱間圧延ラインに跨設した門形架台
に昇降可能に支持され、下面側スプレーヘッダーは圧延
材搬送用テーブルローラ間に設けた固定支柱に昇降可能
に支持され、上下各スプレーヘッダーの高圧水供給配管
系に各噴射ノズル毎に独立して開閉弁を設けたことを特
徴とする高温圧延材のデスケーリング装置。
A high-pressure water descaling device for a hot rolling line, in which a pair of upper and lower spray headers each equipped with a plurality of high-pressure water injection nozzle groups can be raised and lowered, and the upper side spray header is installed across the hot rolling line. It is supported in a vertically movable manner on a gate-shaped frame, and the lower side spray header is supported in a vertically movable manner on a fixed column installed between table rollers for conveying rolled material. A descaling device for high-temperature rolled materials characterized by an independent on-off valve.
JP33577487A 1987-12-29 1987-12-29 Descaling apparatus for hot rolled stock Pending JPH01178312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33577487A JPH01178312A (en) 1987-12-29 1987-12-29 Descaling apparatus for hot rolled stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33577487A JPH01178312A (en) 1987-12-29 1987-12-29 Descaling apparatus for hot rolled stock

Publications (1)

Publication Number Publication Date
JPH01178312A true JPH01178312A (en) 1989-07-14

Family

ID=18292301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33577487A Pending JPH01178312A (en) 1987-12-29 1987-12-29 Descaling apparatus for hot rolled stock

Country Status (1)

Country Link
JP (1) JPH01178312A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120036909A1 (en) * 2005-10-06 2012-02-16 Sms Siemag Aktiengesellschaft Method and device for cleaning slabs, thin slabs, profiled elements, or similar
CN108326054A (en) * 2018-01-08 2018-07-27 邯郸钢铁集团有限责任公司 A kind of heavy and medium plate mill collector elevation adjusting device
JP2021536368A (en) * 2018-09-12 2021-12-27 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング How to make a metal object

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120036909A1 (en) * 2005-10-06 2012-02-16 Sms Siemag Aktiengesellschaft Method and device for cleaning slabs, thin slabs, profiled elements, or similar
CN108326054A (en) * 2018-01-08 2018-07-27 邯郸钢铁集团有限责任公司 A kind of heavy and medium plate mill collector elevation adjusting device
JP2021536368A (en) * 2018-09-12 2021-12-27 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング How to make a metal object

Similar Documents

Publication Publication Date Title
CA2623528C (en) Method and device for cleaning slabs, thin slabs, profiled elements, or similar
RU2451566C2 (en) Cast band with low surface roughness, method and device for its production
JPH01178312A (en) Descaling apparatus for hot rolled stock
KR870009770A (en) Decay rolling method and apparatus of high temperature sheet material
CN111715702B (en) Strip steel warping and flattening method in rough rolling process
CN1714957B (en) Method and device for producing different metal material composite plate and strip
KR20100020648A (en) Apparatus for ascenting and descenting of descaling header for hot rolling steel plate
CN207026139U (en) Shaped steel finish rolling tandem mill unit inlet guider
CN202238902U (en) Rolling mill stand foreign matter blowing device
CN202667290U (en) Horizontal sweeping device for furnace rolling mill
JPS56168906A (en) Method and apparatus for controlling breadth of steel sheet rolled by rolling mill
US2317495A (en) Desurfacing apparatus and process
CN110976392A (en) Hot rolling coiling machine front roller table sweeps device
CN110355216B (en) Control method for eliminating tail transverse vibration line offset of short-process thin strip steel
CN211386044U (en) Hot rolling coiling machine front roller table sweeps device
JPS6048241B2 (en) Rolling method for hot-rolled steel sheets with few scale defects
CN210936468U (en) Rapid adjusting device for descaling water beam at inlet of hot rolling roughing mill
CN209094501U (en) A kind of slab manual cutting gun support
CN212761022U (en) Cooling device for continuous casting production of medium plate
CN110614414A (en) Method for replacing horizontal distributor of scarfing machine
JPS5570415A (en) Preventing method for meandering of steel strip in leveling with hot rolling line
CN219890581U (en) Hot rolled steel strip on-line deviation detection device based on infrared imaging technology
CN215965537U (en) Device for preventing intermediate billet from impacting rough rolling roller way
CN210210031U (en) Press-in straightening device for reducing iron oxide on surface of steel plate
CN211074778U (en) PVC floor product production equipment with release paper by adopting silica gel belt