JPS5976615A - Method and device for descaling steel material in low pressure - Google Patents
Method and device for descaling steel material in low pressureInfo
- Publication number
- JPS5976615A JPS5976615A JP18614182A JP18614182A JPS5976615A JP S5976615 A JPS5976615 A JP S5976615A JP 18614182 A JP18614182 A JP 18614182A JP 18614182 A JP18614182 A JP 18614182A JP S5976615 A JPS5976615 A JP S5976615A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- pressure
- distance
- descaling
- tip
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices 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
- B21B45/08—Devices 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は各種の圧延過程、例えばホットストリップミ
ルの粗圧延、仕り圧延、分塊圧延、丸棒圧延、形鋼圧延
など、あるいは熱処理のため（二加熱され、炉から抽出
された直後の、各種の熱間鋼材例えばシームレス鋼管等
の鋼管、厚板、丸棒その他の鋼材（二対する低圧デスケ
ーリング方法及びその装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to various rolling processes, such as rough rolling in a hot strip mill, finish rolling, blooming rolling, round bar rolling, and section rolling, or for heat treatment (secondary heating, The present invention relates to a low-pressure descaling method and apparatus for various hot-worked steel materials, such as seamless steel pipes, thick plates, round bars, and other steel materials (2) immediately after extraction.
本発明においては、シームレス鋼管の熱処理金側に具体
的Ｃ二詳述する。しかし、本発明の経済的かつ効果的な
デスケーリング方法は、鋼旨の熱処理過程のみでなく、
広く圧延過程や鋼管以外の熱処理過程にも適用できるも
のである。In the present invention, C2 will be specifically described in detail on the heat-treated gold side of the seamless steel pipe. However, the economical and effective descaling method of the present invention is not limited to the heat treatment process of steel.
It can be widely applied to rolling processes and heat treatment processes other than steel pipes.
近年、シームレス鋼管は品質の高級化に対する要求の増
大（二とも゛ない、焼入れあるいは調質などの熱処理の
比率が次第に高まってきている。焼入れ装置の一つに外
面リング冷却装置があり、この装置は、焼入れ温度以上
に加熱されたのち炉から搬出された鋼管全、水冷ノズル
とピンチロールが交互に配置された装置の中を通過させ
ることによって外面からの焼入れを行なうものである。In recent years, there has been an increase in the demand for higher quality seamless steel pipes (inevitably, the ratio of heat treatment such as quenching or thermal refining is gradually increasing. One of the quenching devices is an external ring cooling device. In this method, the entire steel pipe is heated above the quenching temperature and then taken out of the furnace, and then passed through a device in which water-cooled nozzles and pinch rolls are arranged alternately, thereby quenching the pipe from the outside.
この焼入れ過程において鋼管に曲がりが生ずると、鋼管
の水冷ノズルあるいはピンチロールに対するつつかけの
ために運転を停止せざるを得なかったり、焼入れ装＃を
出たあとの搬送、ハンドリングのトラブルの原因となっ
たり、真直度不良等の品質上の問題となる。又、もう−
〇の問題として焼入れに伴なう真円度不良があり、これ
は製品品質に著しい悪影響を与えている。If a bend occurs in the steel pipe during this quenching process, it may be necessary to stop operation due to the pipe being poked by the water-cooled nozzle or pinch rolls, or it may cause problems with transportation and handling after leaving the quenching chamber. This may lead to quality problems such as poor straightness. Again, already-
The problem with 〇 is poor roundness due to hardening, which has a significant negative impact on product quality.
焼入れによる鋼管のこれらの曲シや真円度不良等のいわ
ゆる「焼入ひずみ」の原因には、炉加熱の際のスキッド
マークあるいは鋼管上部と下部の加熱条件の相違にとも
なう偏熱、水冷ゾーンにおけるノズルからの流量、圧力
の偏差にともなう偏冷却、圧延時の鋼管の偏肉などが考
えら）するが、中でも最も大きな原因となっているもの
にミルスケールと加熱炉内で鋼管表面（二生成付着する
スケールがある。スケールのない鋼管表面の熱伝達係数
は高（焼入能力も大きいが、一方スケールが付着した鋼
管表面の熱伝達係数は著しく悪くなる。Causes of so-called "quenching distortion" such as bending and poor roundness of steel pipes due to quenching include skid marks during furnace heating, uneven heat due to differences in heating conditions between the upper and lower parts of the steel pipe, and water cooling zone. This is thought to be caused by uneven cooling due to deviations in the flow rate and pressure from the nozzle during rolling, uneven thickness of the steel pipe during rolling, etc., but the biggest cause is There is scale that forms and adheres.The heat transfer coefficient of the surface of a steel pipe without scale is high (the quenching ability is also high, but on the other hand, the heat transfer coefficient of the surface of a steel pipe with scale adhering to it becomes significantly worse).
外部から強冷を受ける鋼管は肉厚方向の伝熱に比べて円
周方向の伝熱が少ないため、同一鋼管表面においてスケ
ールのない部分とスケールの付着した部分が混在すると
、スケールのない部分は内面まで急冷される一方でスケ
ールの付着した部分は、内面まで比較的ゆっくりした冷
却が行なわれる。Steel pipes that are strongly cooled from the outside have less heat transfer in the circumferential direction than in the thickness direction, so if parts without scale and parts with scale adhere to the same steel pipe surface coexist, the parts without scale will While the inner surface is rapidly cooled, the scale-attached portion is cooled relatively slowly to the inner surface.
この鋼管内部の温度降下の時間的なずれはマルテンサイ
ト変態【二よる変態膨張の時間的なずれとなって残留ひ
ずみを生み出し、鋼管の曲りや真円度不良となるのであ
る。This time lag in the temperature drop inside the steel pipe results in a time lag in the martensitic transformation (transformation expansion), which creates residual strain, resulting in bending and poor roundness of the steel pipe.
本発明はと述したスケールによる曲りや真円度不良を防
止するためのデスケルリング方法とリング冷却の直前に
デスケーリング装置を設けた外面リング焼入れ装置のう
ちのデスケーリング装置に関わるもので、スケール剥離
能力が大きくかつ低コストのデスケーリング方法とその
装置を提供するものである。The present invention relates to a descaling method for preventing bending and roundness defects due to scale as described above, and a descaling device of an outer ring hardening device in which a descaling device is provided immediately before ring cooling. The object of the present invention is to provide a descaling method and apparatus that have a high peeling ability and are low in cost.
従来のデスケーリング方法は、１つのリング型ヘッダー
で各種のサイズの鋼管に適用するために、また、少ない
個数のノズルで全鋼管表面をカバーする必要からノズル
チップと鋼管表面の間の距離、すなわちノズル面間距離
は１５０ ｍｕμ上であったために、衝撃力が小さく、
デスケーリング効果が余り大きくなかった。それ故デス
ケーリング効果を大きくするために１５ ’Ｏ〜２５０
ｋｆ／ｃｍ２Ｇもの吐出圧力の超高圧ポンプが設置さ
れていた。このため、ポンプが高価であシ且っ消費電力
が大きい欠点があった。Conventional descaling methods are limited by the distance between the nozzle tip and the steel pipe surface, in order to apply one ring-type header to steel pipes of various sizes, and because it is necessary to cover the entire steel pipe surface with a small number of nozzles, i.e. Since the distance between the nozzle surfaces was 150 muμ, the impact force was small.
The descaling effect was not very large. Therefore, in order to increase the descaling effect, 15'O ~ 250
An ultra-high pressure pump with a discharge pressure of kf/cm2G was installed. Therefore, the pump is expensive and consumes a large amount of power.
本発明者らはデスケーリング水の衝撃圧を直接測定した
結果、衝撃圧（Ｐｓ）は下式で表わされることがわかっ
た。As a result of directly measuring the impact pressure of descaling water, the present inventors found that the impact pressure (Ps) is expressed by the following formula.
０．６３ α ２．ｏ５
Ｐｓ ＝ ｋＩＩＰＯ”Ｑ ／ｈ
ここで
Ｐ５： 衝撃圧 （ｋＰ／６ｎ２）Ｐｏ： ヘッ
ダー噴出圧力 （ｋＰ／ｃｍ２）Ｑ ： ノズル吐出流
酸 Ｃ６／−１め）ｈ ： ノズル面間距離 （朋）
ｋ、α： 定数
ノズルとの距離ヲ１／２にすると噴出圧力を約１／１０
に低圧化可能。0.63 α2. o5 Ps = kIIPO”Q /h where P5: Impact pressure (kP/6n2) Po: Header jet pressure (kP/cm2) Q: Nozzle discharge acid flow C6/-1) h: Distance between nozzle surfaces (tomo) k, α: Constant When the distance to the nozzle is reduced to 1/2, the ejection pressure is reduced to approximately 1/10.
It is possible to lower the pressure.
２）同一ノズルで、ノズルとの距離のみ？ｌ／２にする
と噴出圧力を約１／ ３．４に低圧化可能ということが
判明した。第１図に吐出水量、ヘッダー噴出圧力を同一
にした場合の、面間距離りと衝撃圧Ｐｓの関係全示す。2) Is it the same nozzle, only the distance to the nozzle? It was found that by setting the pressure to 1/2, the ejection pressure could be reduced to about 1/3.4. FIG. 1 shows the relationship between the surface distance and the impact pressure Ps when the discharge water volume and header jet pressure are the same.
次に、本発明者等は焼入面がりに対するデスケーリング
の効果及びその透面条件について系統的に究明し、その
代表的結果の１例を第２図に示した。第２図を基に鋼管
の製造工程、熱処理等の工業的諸操業条件を勘案すると
、デスケーリングの時に必要な衝撃力は４〜３０ ｋ７
７ｃｍ”程度で十分である。Ｊ４ ｋｆ／ｃｍ２以下の
衝撃力では焼入面がり防止効果は殆んどない。また、３
０ ｋＰ／ｃｍ２以上の衝撃力電力えても焼入面がり防
止効果はそれ以上増大しない。Next, the present inventors systematically investigated the effect of descaling on the hardened surface and the conditions for the transparent surface, and one example of the representative results is shown in FIG. Based on Figure 2 and taking into account various industrial operating conditions such as the steel pipe manufacturing process and heat treatment, the impact force required for descaling is 4 to 30 k7.
Approximately 7 cm" is sufficient. An impact force of less than J4 kf/cm2 has almost no effect on preventing hardening.
Even if an impact power of 0 kP/cm2 or more is applied, the effect of preventing quenched surface curling does not increase any further.
４〜：３０ ｋｌ／ｃｍ２の衝撃力を確保するの（：必
要なノズル噴出子方及び面間距離の組合せを実験的に検
討した結果、経済的な範囲はノズル噴出圧力１５〜８０
ｋｆ／ｃｍ２Ｇ 、面間距離２５−１００１１１１Ｒ
が適当であることが判明した。２５ｍｍ以下の面間距離
にノズルを接近させると、１個のノズルでカバ−できる
範囲が狭（なるため、ノズル個数が著しく増え、天険の
水箪ヲ必要とし省エネルギーの観点から不利である。ま
た］、 ＯＯｍｍ以上の面間距離では４ ｋｌ／ｃｍ２
以上の衝撃力の確保が困難であるため、８０ ｋ！ｌ−
７ｃｍ２Ｇ以上の高いノズル噴出圧力を必要とし、超高
圧ポンプが必要になり、同じく省エネルギーの観点から
不利である。4~: To ensure an impact force of 30 kl/cm2 (: As a result of experimentally examining the required combinations of nozzle ejection side and surface distance, the economical range is a nozzle ejection pressure of 15~80 kl/cm2.
kf/cm2G, distance between surfaces 25-1001111R
was found to be appropriate. When the nozzles are brought closer to each other with a distance between surfaces of 25 mm or less, the range that can be covered by one nozzle becomes narrow (this results in a significant increase in the number of nozzles, which requires a natural water tank, which is disadvantageous from the viewpoint of energy saving. ], 4 kl/cm2 for surface distances of OOmm or more
It is difficult to secure an impact force greater than 80k! l-
It requires a high nozzle ejection pressure of 7 cm2G or more, and requires an ultra-high pressure pump, which is also disadvantageous from the viewpoint of energy saving.
本発明の骨子は、以上の知見に基づき経済的かつ効率的
なデスケーリング方法全提供すること、及びデスケーリ
ングされる鋼管の軸中心に対し゛てノズルチップの位置
を可変とすることによって任意の径の鋼管に対して、鋼
管表面とノズルチップの距離すなわち面間距離を任意に
設定しうるデスケーリング装置を考案したことにある。The gist of the present invention is to provide an economical and efficient descaling method based on the above knowledge, and to provide an arbitrary descaling method by making the position of the nozzle tip variable with respect to the axial center of the steel pipe to be descaled. The object of the present invention is to devise a descaling device that can arbitrarily set the distance between the surface of the steel pipe and the nozzle tip, that is, the distance between the surfaces, for a steel pipe of any diameter.
以下、装置の一実施例に基づいて詳細に説明する。Hereinafter, a detailed explanation will be given based on one embodiment of the device.
第３図は本発明Ｃ二よるデスケーリング装置の横断面図
、第４図はヘッダ一部拡大図、第５図は正面図を示す。FIG. 3 is a cross-sectional view of the descaling device according to the present invention C2, FIG. 4 is a partially enlarged view of the header, and FIG. 5 is a front view.
ノズルヘッダー１内に、ノズル内筒２がデスケーリング
される鋼管１１の軸中心に対して摺動自在ζ二設置され
ている。ノズル内筒２（二は開孔部すが設けられておシ
、ノズルヘッダー内の水はノズル内筒２の位置にかかわ
らずノズル内節内に供給される。ノズル内筒２の先端（
−設けられたデスク用ノズルチップ３よりデスケ水の噴
射を行ない鋼管ａのデスケーリングが行なわれる。ノズ
ル内筒２の端部にノズル内筒ガイドフレーム４があり、
該ガイドフレーム４０両端（二取り付けられたローラー
５は、面板６のガイド孔Ｃにガイドされている。面板６
はノズルヘッダー１の面板ガイド溝７に沿ってノズルヘ
ッダーに対して回転可能な構造となっている。ノズルへ
ラダーは支柱８を介して昇降架台９に支承され、昇降架
台９」二には油圧モーター１０により駆動されるウオー
ム１１が上架されている。またウオーム１１は、面板６
の外周に設けられた歯車１２と噛み合っている。昇降架
台９は、ペースｊ３上の油圧モータート１０回転により
、ウオームジヤツキ１５ヲ介して昇降する。A nozzle inner cylinder 2 is installed in the nozzle header 1 so as to be slidable about the axial center of the steel pipe 11 to be descaled. The nozzle inner cylinder 2 (2 is provided with an opening), and the water in the nozzle header is supplied into the nozzle inner section regardless of the position of the nozzle inner cylinder 2.
- Descaling water is injected from the provided desk nozzle tip 3 to descale the steel pipe a. There is a nozzle inner cylinder guide frame 4 at the end of the nozzle inner cylinder 2,
The rollers 5 attached to both ends of the guide frame 40 are guided by the guide holes C of the face plate 6.
has a structure that can rotate relative to the nozzle header along the face plate guide groove 7 of the nozzle header 1. The ladder to the nozzle is supported by an elevating frame 9 via a support 8, and a worm 11 driven by a hydraulic motor 10 is mounted on the elevating frame 9. The worm 11 also has a face plate 6.
It meshes with a gear 12 provided on the outer periphery of. The elevating frame 9 is raised and lowered via a worm jack 15 by 10 rotations of a hydraulic motor on a pace j3.
次に、本装置の動作全説明する。鋼管ａのサイズが変わ
ったり、あるいはスクールの剥層状況からノズルチップ
３の位置を変更する必要が生した場合には、まず昇降架
台９上の油圧モータ−１０ヲ回転させる。油圧モーター
１０（二直結されたウオーム１１の回転により、歯車１
２ヲ介して面板６がノズルヘッダー１に対して相対的に
回転する。面板内に設けられたガイド孔Ｃは、位置によ
って軸中心までの距離が変わるようにらせん状にあるい
は傾斜して用意されているので面板が回転するとローラ
ー５を介してノズル円筒２は鋼管の軸中心方向に移動し
、ノズルチップ３の位置を任意に設定できるのである。Next, the entire operation of this device will be explained. When the size of the steel pipe a changes or when it becomes necessary to change the position of the nozzle tip 3 due to the delamination situation of the school, first, the hydraulic motor 10 on the elevating frame 9 is rotated. Hydraulic motor 10 (by rotation of worm 11 which is directly connected to gear 1)
2, the face plate 6 rotates relative to the nozzle header 1. The guide hole C provided in the face plate is prepared spirally or inclined so that the distance to the axis center changes depending on the position, so when the face plate rotates, the nozzle cylinder 2 moves through the roller 5 to the axis of the steel pipe. By moving toward the center, the position of the nozzle tip 3 can be set arbitrarily.
以上、本発明の装置と方法を用いれば鋼管表面とノズル
チップの距離全迅速かつ任意（二設定できることにより
、■ヘッダー供給圧が１５〜８０ ｋｊｉ／１Ｍ２とい
った比較的低圧の場合でも高圧と同等の衝撃正金うるこ
とかできる、■ヘッダー供給圧が高い場合は、より一層
大きな衝撃圧を全サイズにわたって均等（二うろことが
できる、などの効果があり、その省エネルギー効果、デ
スケーリング能力向上効果、設備費削減効果には多大な
ものう１ある。また本発明の面間距離可変デスケーリン
グ法は前記の通り各種の圧延工程等のデスケーリングや
、多段デスケーリングにも適用可能である。As described above, by using the apparatus and method of the present invention, the distance between the steel pipe surface and the nozzle tip can be quickly and arbitrarily set. ■When the header supply pressure is high, the impact pressure can be applied evenly over all sizes, which has the effect of saving energy, improving descaling ability, There is another significant effect of reducing equipment costs.Furthermore, the surface distance variable descaling method of the present invention can be applied to descaling of various rolling processes, etc., and multi-stage descaling as described above.
第１図はノズル面間距離と衝（ＩＶ圧の関係を示すグラ
フ、第２図は外面焼入時の曲がりに及ぼすデスケーリン
グ衝撃力の効果と０□濃度の効果を示すグラフである。
第３図は本発明によるデスケーリング装置（一実施例）
の側面図、第４図はヘッダ一部拡大図、第５図は正面図
である。
■・・・ノズルヘッダー、 ２・・−ノズル内面、３
・・・ノズルチップ、 ４・・・ノズル内筒ガイドフ
レーム、 ５・・・ローラー、 ６・・−面板、
７・・面板ガイド部、 ８・・・支柱、 ９・・
昇降架台、 １０・・・油圧モーター、ｌｌ・・ウオー
ム、 Ｊ２・・・歯車、１３・・ペース、１４・・・油
圧モーター、１５・・・ウオームジヤツキ、 ２ビ・
・鋼管、 １）・・内筒開孔部、し・・−ガイド孔
特許出願人代理人
弁理士 矢 葺 知 之
（ほか１名）
第 １ 図
５０ １００ １５０
面ｒ１ｘｃ＊良！Ｌ（□、）
第 響
０２凛列〔（カロ宍へ′ＪＰ西）、５４第３図
第４図
第５図Figure 1 is a graph showing the relationship between the distance between nozzle surfaces and the IV pressure, and Figure 2 is a graph showing the effect of descaling impact force and the effect of 0□ concentration on bending during external hardening. Figure 3 shows a descaling device according to the present invention (one embodiment)
4 is a partially enlarged view of the header, and FIG. 5 is a front view. ■...Nozzle header, 2...-nozzle inner surface, 3
...Nozzle tip, 4...Nozzle inner cylinder guide frame, 5...Roller, 6...-face plate,
7.Face plate guide part, 8.. Support column, 9..
Lifting frame, 10...Hydraulic motor, ll...Worm, J2...Gear, 13...Pace, 14...Hydraulic motor, 15...Worm jack, 2...
・Steel pipe, 1) Inner cylinder opening, guide hole Tomoyuki Yafuki (and 1 other person), Patent Attorney, Patent Applicant No. 1 Figure 50 100 150 Surface r1xc *Good! L (□,) Hibiki 02 Rin series [(Karoshi to 'JP West), 54 Figure 3 Figure 4 Figure 5
Claims (1)
ｒｎ２Ｇ 。 よって、噴出水の被デスケーリング面に対する衝撃力を
４〜３０ ｋ、ｐ／１ｙｎ２としたことを特徴とする銅
相の低圧デスケーリング方法。 ２、 中央に鋼材の通過空間を形成させたヘラグーに、
鋼材の外面に沿う方向へ所定間隔をおいて複数個のノズ
ルチップを並役し、該ノズル群を鋼材の外面・＼向は進
退自在とし、鋼材表面とノズルチップの先端面との距離
全選定し低圧デスケーリングを可能としてなるデスケー
リング装置。[Claims] (1) The pressure of water jetted from the nozzle is 15 to 80 kf/c.
rn2G. Therefore, a low-pressure descaling method for a copper phase is characterized in that the impact force of the ejected water on the surface to be descaled is set to 4 to 30 k, p/1yn2. 2. Heragu has a steel passage space in the center,
A plurality of nozzle tips are arranged side by side at predetermined intervals along the outer surface of the steel material, and the nozzle group is freely movable forward and backward in the direction of the outer surface of the steel material, and the distance between the surface of the steel material and the tip surface of the nozzle tip is fully selected. A descaling device that enables low pressure descaling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18614182A JPS5976615A (en) | 1982-10-25 | 1982-10-25 | Method and device for descaling steel material in low pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18614182A JPS5976615A (en) | 1982-10-25 | 1982-10-25 | Method and device for descaling steel material in low pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5976615A true JPS5976615A (en) | 1984-05-01 |
| JPH0371203B2 JPH0371203B2 (en) | 1991-11-12 |
Family
ID=16183090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18614182A Granted JPS5976615A (en) | 1982-10-25 | 1982-10-25 | Method and device for descaling steel material in low pressure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5976615A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62179110U (en) * | 1986-04-30 | 1987-11-13 | ||
| EP2028290A1 (en) * | 2007-08-21 | 2009-02-25 | ArcelorMittal France | Method and device for secondary descaling steel strip with low pressure water jets |
| JP2011214037A (en) * | 2010-03-31 | 2011-10-27 | Koyo Thermo System Kk | Quenching apparatus |
| WO2014023753A1 (en) | 2012-08-10 | 2014-02-13 | Sms Siemag Ag | Method for cleaning and/or descaling a slab or a preliminary strip by means of a descaling device, and descaling device |
| CN109112273A (en) * | 2018-10-31 | 2019-01-01 | 重庆市瑞轩豪邦新型建材有限公司 | A kind of production equipment of building materials |
| CN110871218A (en) * | 2019-11-28 | 2020-03-10 | 宝钢特钢韶关有限公司 | Intermediate billet descaling system, descaling process and steel rolling system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838242A (en) * | 1971-09-18 | 1973-06-05 |
-
1982
- 1982-10-25 JP JP18614182A patent/JPS5976615A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838242A (en) * | 1971-09-18 | 1973-06-05 |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62179110U (en) * | 1986-04-30 | 1987-11-13 | ||
| EP2028290A1 (en) * | 2007-08-21 | 2009-02-25 | ArcelorMittal France | Method and device for secondary descaling steel strip with low pressure water jets |
| WO2009056712A2 (en) * | 2007-08-21 | 2009-05-07 | Arcelormittal France | Method and equipment for secondary descaling of metallic strips by hydraulic low-pressure spraying of water |
| WO2009056712A3 (en) * | 2007-08-21 | 2009-07-16 | Arcelormittal France | Method and equipment for secondary descaling of metallic strips by hydraulic low-pressure spraying of water |
| JP2010536581A (en) * | 2007-08-21 | 2010-12-02 | アルセロールミタル・フランス | Method and apparatus for secondary scale removal of metal strips by spraying water at low water pressure |
| US10378115B2 (en) | 2007-08-21 | 2019-08-13 | Arcelormittal France | Economic secondary descaling |
| JP2011214037A (en) * | 2010-03-31 | 2011-10-27 | Koyo Thermo System Kk | Quenching apparatus |
| WO2014023753A1 (en) | 2012-08-10 | 2014-02-13 | Sms Siemag Ag | Method for cleaning and/or descaling a slab or a preliminary strip by means of a descaling device, and descaling device |
| DE102012214298A1 (en) | 2012-08-10 | 2014-02-13 | Sms Siemag Ag | Process for the purification and / or descaling of a slab or slag by means of a scale scrubber and scale scrubber |
| CN109112273A (en) * | 2018-10-31 | 2019-01-01 | 重庆市瑞轩豪邦新型建材有限公司 | A kind of production equipment of building materials |
| CN110871218A (en) * | 2019-11-28 | 2020-03-10 | 宝钢特钢韶关有限公司 | Intermediate billet descaling system, descaling process and steel rolling system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0371203B2 (en) | 1991-11-12 |
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