JPS6314053B2 - - Google Patents
Info
- Publication number
- JPS6314053B2 JPS6314053B2 JP58025864A JP2586483A JPS6314053B2 JP S6314053 B2 JPS6314053 B2 JP S6314053B2 JP 58025864 A JP58025864 A JP 58025864A JP 2586483 A JP2586483 A JP 2586483A JP S6314053 B2 JPS6314053 B2 JP S6314053B2
- Authority
- JP
- Japan
- Prior art keywords
- strip
- nozzle
- cooling
- header
- cooling water
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 33
- 239000000498 cooling water Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000007654 immersion Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】
〔産業上の技術分野〕
この発明は加熱されたストリツプを焼入れする
ために水冷によつて急冷却するストリツプ冷却装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Technical Field] This invention relates to a strip cooling device for rapidly cooling a heated strip by water cooling in order to harden the strip.
第１図、第２図は本出願人の発明（特公昭56−
52094号）に係るストリツプの焼入れのための冷
却装置を示すもので、１はストリツプ、２は冷却
槽、３はストリツプ１の両面対称位置に配置した
一対の冷却水噴射装置、４はシンクロール、５は
冷却槽２に新水を供給するための冷却水供給管、
６は冷却槽２と貯水槽７を導通させる排水管、
７′は水位調節せき、７″は隔板、８は導管、９は
ポンプ、１０はストリツプ１の両面に接触させた
ロール、１１は断面半円形の後壁、１２は金網等
のスクリーン、１３は複数個のスリツトノズル１
６，１７を穿設したノズル板である。
Figures 1 and 2 are inventions of the present applicant (Japanese Patent Publication No. 1983-
52094), in which 1 is a strip, 2 is a cooling tank, 3 is a pair of cooling water injection devices arranged at symmetrical positions on both sides of the strip 1, 4 is a sink roll, 5 is a cooling water supply pipe for supplying fresh water to the cooling tank 2;
6 is a drain pipe that connects the cooling tank 2 and the water storage tank 7;
7' is a water level adjustment weir, 7'' is a partition, 8 is a conduit, 9 is a pump, 10 is a roll in contact with both sides of the strip 1, 11 is a rear wall with a semicircular cross section, 12 is a screen such as a wire mesh, 13 is multiple slit nozzles 1
This is a nozzle plate with holes 6 and 17.
第３図Ａ，Ｂは第１図，第２図のストリツプ冷
却装置により生じる冷却水の流れを示したもの
で、スリツトノズル１６の中央付近から吐出した
冷却水は、ストリツプ１の走行に伴う随伴流によ
り下方に向かう傾向があり、その結果、第３図Ａ
に示すような渦を生じ、その流れはスリツトノズ
ル１６間で逃げ場がないため第３図Ｂのような横
流れを生じる。このため、ストリツプ１の面上に
おける冷却能力は板幅両端部分（板エツジ部分）
が板幅中央部分より大きくなる傾向があり、板幅
両端部の冷却が中央部より速やかに行なわれ、板
幅中央部は端部に比べ冷却による収縮が遅れるか
ら、ストリツプ１の板形状に耳波や複合中伸び等
を生じ、ストリツプ１の走行安定性が悪くなるな
ど操業上の支障をきたすことがしばしばあつた。
このようにストリツプ１の板幅中央部の冷却が端
部に比べ劣りがちな傾向は、多段スリツトノズル
１６の中央部から吐出される水の逃げ場が多段ス
リツトノズル１６の周縁部しかないため、多段ス
リツトノズルの中央付近の静圧が高くなり、中央
付近で吐出する冷却水量は周縁部で吐出する冷却
水量より少なくなる。また中央付近で吐出した冷
却水は横流れするため中央付近を有効に冷却して
いない。このため冷却速度の遅れがちな板幅中央
部で製品品質上、冶金学的に必要な冷却速度を確
保するため、かなり大量の冷却水流量を流してい
た。そのため冷却水吐出用ポンプ９として高圧・
大流量のものが必要であり、ポンプ電力が大きく
ランニングコストの上昇も招いていた。 FIGS. 3A and 3B show the flow of cooling water generated by the strip cooling device shown in FIGS. As a result, Fig. 3A
A vortex as shown in FIG. 3B is generated, and since the flow has no escape between the slit nozzles 16, a lateral flow as shown in FIG. 3B is generated. Therefore, the cooling capacity on the surface of strip 1 is limited to both ends of the strip width (plate edge portion).
tends to be larger than the center part of the board width, cooling at both ends of the board width is faster than the center part, and shrinkage due to cooling is delayed in the center part of the board width compared to the edges. Waves, compound elongation, etc. were generated, and the running stability of the strip 1 was deteriorated, which often caused operational problems.
This tendency for cooling of the central part of the strip 1 to be inferior to that of the ends is because the water discharged from the center of the multi-stage slit nozzle 16 has only a place to escape to the periphery of the multi-stage slit nozzle 16. The static pressure near the center increases, and the amount of cooling water discharged near the center becomes smaller than the amount of cooling water discharged at the periphery. In addition, the cooling water discharged near the center flows sideways, so the area around the center is not effectively cooled. For this reason, in order to ensure the cooling rate necessary for product quality and metallurgy at the center of the plate width, where the cooling rate tends to be slow, a considerably large amount of cooling water has to be flowed. Therefore, the high pressure and
A large flow rate was required, which required a large amount of pump power, leading to an increase in running costs.
このような問題を解決するために、加熱された
ストリツプ１を水冷する浸漬水中（第１図の冷却
水噴射装置３が配置される部分）に、冷却水噴射
ノズルｂを所定のピツチで第５図の如く多段に設
け、且つこの各ノズルヘツダーａを個々に独立さ
せて、ストリツプ１の進行方向に対し、適宜の隙
間Ｄをあけて第５図のように離隔配置した、特開
昭51−133110号、特開昭51−13314号及び特開昭
51−133116号公報にも開示のストリツプ冷却装置
が知られている。第４図はこのストリツプ冷却装
置の中の１個の冷却水噴射ノズルを断面図で示し
ており、ノズルヘツダーａとスリツト形のノズル
ｂはボルトにより接合され、ヘツダー中心の給水
管ｃから冷却水を導入し、前記ノズルｂからスト
リツプ１に向かつて冷却水を吹き付けるノズル構
造となつている。 In order to solve this problem, cooling water injection nozzles b are inserted at a predetermined pitch into the immersion water (the part where the cooling water injection device 3 in FIG. 1 is arranged) in which the heated strip 1 is cooled. JP-A-51-133110, which is provided in multiple stages as shown in the figure, and each nozzle header a is made independent and spaced apart from each other with an appropriate gap D in the traveling direction of the strip 1 as shown in FIG. No., JP-A No. 51-13314 and JP-A-Sho.
A strip cooling device disclosed in Japanese Patent No. 51-133116 is also known. Figure 4 shows a cross-sectional view of one cooling water injection nozzle in this strip cooling device.Nozzle header a and slit-shaped nozzle b are joined by bolts, and cooling water is supplied from water supply pipe c in the center of the header. The nozzle structure is such that the cooling water is introduced and sprayed from the nozzle b toward the strip 1.
前記従来のストリツプ冷却装置は各ノズルヘツ
ダーａを個々に独立させて、ストリツプ進行方向
に対し離間させて配置することにより、各ノズル
ヘツダーａ間に隙間Ｄを作り、ストリツプ１の被
冷却面に衝突させた冷却水の噴流を前記ヘツダー
ａ間の隙間Ｄを介してヘツダー後方に流出させる
ことにより、第２図の多段スリツトノズルで生じ
ていた横流れを防止し、板幅方向冷却における均
一性をもたせることができ、また前記ノズルｂに
供給する冷却水の単位流量当りの冷却能力は向上
し、現状の冷却能力を得るのに必要な冷却水水量
を大幅に減らすことを可能とし、設備費、ランニ
ングコストを低減させることができる。
In the conventional strip cooling device, each nozzle header a is made independent and arranged apart from each other with respect to the strip traveling direction, thereby creating a gap D between each nozzle header a, which collides with the surface to be cooled of the strip 1. By causing the jet of cooling water to flow out behind the header through the gap D between the headers a, it is possible to prevent the lateral flow that occurs in the multi-stage slit nozzle shown in Fig. 2 and to provide uniform cooling in the width direction of the plate. In addition, the cooling capacity per unit flow rate of the cooling water supplied to the nozzle b has been improved, making it possible to significantly reduce the amount of cooling water required to obtain the current cooling capacity, reducing equipment costs and running costs. can be done.
しかしながら、この従来のノズル多段式のスト
リツプ冷却装置では、ストリツプ１の走行速度に
よつては、個々のスリツトノズルｂから吐出さ
れ、鋼板（ストリツプ１）に直角に衝突した後、
上下に二つに分かれる水噴流のフロー・パターン
が微妙に変化し、水噴出の流れが不安定となりが
ちで、ひいては冷却速度にも不安定さが生じ、ラ
イン進行方向のストリツプ面上での冷却速度ムラ
が生じ、平均的な冷却速度としては若干遅くなる
傾向がある。これは、ストリツプの走行につれて
周囲流体に生ずる随伴流れ（流体力学の分野で
は、クエツト流れQuet Flowと呼ばれている）
の程度が、当然のことながらライン速度によつて
変化するからである。 However, in this conventional nozzle multi-stage strip cooling device, depending on the traveling speed of the strip 1, the strip is discharged from the individual strip nozzles b, and after colliding with the steel plate (strip 1) at right angles,
The flow pattern of the water jet, which is divided into two upper and lower parts, changes slightly, and the flow of the water jet tends to become unstable, which in turn causes instability in the cooling rate. Speed unevenness occurs, and the average cooling rate tends to be slightly slower. This is the accompanying flow (called Quet Flow in the field of fluid mechanics) that occurs in the surrounding fluid as the strip runs.
This is because the extent of this naturally changes depending on the line speed.
この発明の目的は、前記のような水噴出流をス
トリツプの走行速度に左右されることなく、上下
二つに安定した状態で確実に分かれさせることが
可能となり、表面熱伝達率をラインスピードによ
らず一定に保つことができるようにしたストリツ
プの冷却装置を提供することにある。 The purpose of this invention is to make it possible to reliably split the water jet flow into upper and lower parts in a stable manner without being affected by the running speed of the strip, and to adjust the surface heat transfer coefficient to the line speed. It is an object of the present invention to provide a cooling device for a strip that can be kept constant regardless of the temperature.
この発明は前記従来の問題点を解決するため
に、ストリツプ進行方向に対し離間する各ノズル
ヘツダー間の中央に、先端がノズル出口と略同一
直線上に並び、後端がヘツダー中心を結ぶ線より
後方まで延出する長さの整流板を配設した。
In order to solve the above-mentioned conventional problems, this invention has a tip lined up in the center between the nozzle headers spaced apart in the direction of strip movement, with the tip lined up approximately on the same straight line as the nozzle outlet, and the rear edge lined up behind the line connecting the header centers. A rectifying plate with a length that extends up to
前記整流板の整流作用により、各ノズルからの
衝突噴流が衝突後二つに分れるフロー・パターン
が、確実・安定に得られた。また、ストリツプの
走行速度を種々変えても、極めて安定したフロ
ー・パターンであり、結果的ストリツプの冷却速
度は、極めて安定に保たれることを確認した。
Due to the rectifying action of the baffle plate, a flow pattern in which the colliding jets from each nozzle split into two after collision was reliably and stably obtained. It was also confirmed that even if the strip running speed was varied, the flow pattern was extremely stable, and the resulting cooling rate of the strip remained extremely stable.
以下、本発明のストリツプ冷却装置を第６図及
び第７図の図面に従い説明すると、この実施例は
第５図に示すような従来公知のストリツプ冷却装
置における各ノズルヘツダーａ間の中央に、図中
Ｅで示す整流板を配設固定したもので、前記各ノ
ズルヘツダーａの構造は第４図に示すものと同じ
であるから、同一部分に同符号を付して詳細な説
明は省略する。
Hereinafter, the strip cooling device of the present invention will be explained with reference to the drawings in FIGS. 6 and 7. In this embodiment, in the conventionally known strip cooling device as shown in FIG. Since the structure of each nozzle header a is the same as that shown in FIG. 4, the same reference numerals are given to the same parts and detailed explanation will be omitted.
前記整流板Ｅは各ノズルヘツダーａ間の中央
に、その先端がノズル出口と同一直線上に並ぶよ
うに設け、その後端がノズルヘツダーａの後端
と、同一直線上となるような程度の長さとした。
本実施例では2.0mm厚のSUS鋼板を用い、ストリ
ツプ幅方向に、100mmピツチで設けた3.0mmφの丸
棒の補強部材（第７図中のｆ，ｇ）にて、ノズル
本体と一体として構成した。 The baffle plate E was provided at the center between each nozzle header a so that its tip was aligned on the same straight line as the nozzle outlet, and the length was such that its rear end was on the same straight line as the rear end of the nozzle header a. .
In this example, a 2.0mm thick SUS steel plate is used, and it is constructed integrally with the nozzle body using 3.0mmφ round bar reinforcing members (f, g in Figure 7) installed at 100mm pitch in the strip width direction. did.
なお、前記整流板Ｅの後端部の長さ（鋼板に衝
突した後の排出水の流れる方向の長さ）は十分な
整流効果を持たせるためには、ある程度の長さが
必要で、本実施例では、ノズルヘツダーａの中心
を結ぶ線（第７図のＳ）よりも後方まで延伸させ
る長さとしている。 Note that the length of the rear end of the rectifying plate E (the length in the flow direction of the discharged water after colliding with the steel plate) needs to be long to a certain extent in order to have a sufficient rectifying effect. In the embodiment, the length is such that it extends to the rear of the line connecting the centers of the nozzle headers a (S in FIG. 7).
本実施例では、排出流路の最も狭い場所で8.75
mmである。 In this example, 8.75 at the narrowest point of the discharge flow path
mm.
このようにすることにより第６図の如く、全体
装置を構成した。第６図は第５図の装置に第７図
に示す整流板Ｅが追加されたのみで、第４図、第
５図と他の部分はまつたく同じである。本実施例
では第６図に矢印で示す如く、各ノズルからの衝
突噴流が衝突後二つに分かれるフロー・パターン
が、確実・安定に得られた。ストリツプ１の走行
速度としてmax300mpmまで、種々変えても、ま
た、ストリツプ１の形状によつてストリツプ１の
振動状況が種々変化しても、極めて安定したフロ
ー・パターンであり、結果的にストリツプ１の冷
却速度は、極めて安定に保たれることを確認し
た。 In this way, the entire device was constructed as shown in FIG. In FIG. 6, only the rectifier plate E shown in FIG. 7 is added to the device in FIG. 5, and other parts are exactly the same as those in FIGS. 4 and 5. In this example, as shown by the arrows in FIG. 6, a flow pattern in which the colliding jets from each nozzle split into two after collision was reliably and stably obtained. Even if the running speed of strip 1 is varied up to a maximum of 300 mpm, and even if the vibration conditions of strip 1 are varied depending on the shape of strip 1, the flow pattern remains extremely stable. It was confirmed that the cooling rate was kept extremely stable.
この発明のストリツプ冷却装置は各ノズルヘツ
ダーａ間の中央に、前記のような整流板Ｅを配設
したものであるから、水噴流のフロー・パターン
をストリツプの走行速度に左右されることなく、
確実に安定させることができ、ストリツプ表面の
熱伝達率をラインスピードによらず一定に保ち、
板幅方向の冷却を均一に行なうことが可能とな
る。
Since the strip cooling device of the present invention has the above-mentioned rectifying plate E disposed in the center between each nozzle header a, the flow pattern of the water jet can be controlled without being influenced by the running speed of the strip.
It can be reliably stabilized, keeping the heat transfer coefficient on the strip surface constant regardless of line speed,
It becomes possible to uniformly cool the plate in the width direction.
第１図は従来のストリツプ冷却装置を説明する
ための装置構成図、第２図はその冷却水噴射装置
部分の拡大断面図、第３図は第１図及び第２図の
従来装置により生じる冷却水の流れを示した説明
図、第４図は従来装置に用いられる別の冷却水噴
射ノズルとヘツダーの構造を示した断面図、第５
図はこのノズルヘツダーを浸漬水中に配置した状
態を示す別の従来装置の構成説明図、第６図及び
第７図はこの発明の実施例を示す第４図対応の断
面図と第５図対応の説明図である。
１……ストリツプ、ａ……ノズルヘツダー、ｂ
……冷却水噴射ノズル、Ｅ……整流板。
Fig. 1 is a device configuration diagram for explaining a conventional strip cooling device, Fig. 2 is an enlarged sectional view of the cooling water injection device portion, and Fig. 3 is the cooling produced by the conventional device shown in Figs. 1 and 2. Fig. 4 is an explanatory diagram showing the flow of water; Fig. 4 is a sectional view showing the structure of another cooling water injection nozzle and header used in a conventional device;
The figure is an explanatory diagram of the configuration of another conventional device showing the nozzle header placed in immersion water, and FIGS. 6 and 7 are cross-sectional views corresponding to FIG. 4 and 5, respectively, showing an embodiment of the present invention. It is an explanatory diagram. 1... Strip, a... Nozzle header, b
...cooling water injection nozzle, E...straightening plate.
Claims (1)
に、冷却水噴射ノズルを多段に設け、且つこの各
ノズルのヘツダーをストツプ進行方向に対し離間
させて、ストリツプの被冷却面に衝突させた冷却
水の噴流を各ヘツダー間の隙間からヘツダー後方
に流出させることにより、ストリツプを幅方向に
均一に冷却するようにしたストリツプ冷却装置に
おいて、ストリツプ進行方向に対し離間する各ノ
ズルヘツダー間の中央に、先端がノズル出口と略
同一直線上に並び、後端がヘツダー中心を結ぶ線
より後方まで延出する長さの整流板を配設したこ
とを特徴とするストリツプの冷却装置。1 Cooling water jet nozzles are provided in multiple stages in the immersion water that cools the heated strip, and the headers of each nozzle are spaced apart from each other in the direction of travel of the stop to produce a jet of cooling water that collides with the surface to be cooled of the strip. In the strip cooling device, the strip is cooled uniformly in the width direction by flowing out from the gap between each header to the rear of the header.In the strip cooling device, the tip of the nozzle exit is located in the center between each nozzle header spaced apart with respect to the strip traveling direction. What is claimed is: 1. A strip cooling device characterized in that a rectifier plate is arranged substantially in the same straight line as the header and has a length such that its rear end extends to the rear of the line connecting the centers of the headers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2586483A JPS59153843A (en) | 1983-02-18 | 1983-02-18 | Cooling method of strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2586483A JPS59153843A (en) | 1983-02-18 | 1983-02-18 | Cooling method of strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59153843A JPS59153843A (en) | 1984-09-01 |
| JPS6314053B2 true JPS6314053B2 (en) | 1988-03-29 |
Family
ID=12177664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2586483A Granted JPS59153843A (en) | 1983-02-18 | 1983-02-18 | Cooling method of strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59153843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11193418A (en) * | 1997-12-29 | 1999-07-21 | Kobe Steel Ltd | Manufacture of high strength cold rolled steel sheet excellent in flatness characteristic |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61217531A (en) * | 1985-03-22 | 1986-09-27 | Kawasaki Steel Corp | Cooling method for steel strip |
| KR100420446B1 (en) * | 2001-03-31 | 2004-03-03 | (주)케이.씨.텍 | apparatus for injecting a fluid |
| EP1538228A1 (en) * | 2003-12-01 | 2005-06-08 | R & D du groupe Cockerill-Sambre | Cooling process and device for a steel sheet |
| JP6094722B2 (en) * | 2014-11-28 | 2017-03-15 | Ｊｆｅスチール株式会社 | Metal plate manufacturing method and quench quenching apparatus |
| JP6308287B2 (en) | 2015-12-28 | 2018-04-11 | Ｊｆｅスチール株式会社 | Rapid quenching apparatus and quench quenching method |
| WO2021024021A1 (en) * | 2019-08-06 | 2021-02-11 | Arcelormittal | Device for cooling a steel strip |
| JP7180636B2 (en) * | 2019-08-29 | 2022-11-30 | Ｊｆｅスチール株式会社 | Apparatus for quenching metal plate, method for quenching metal plate, and method for manufacturing steel plate |
| US20220349018A1 (en) | 2019-09-30 | 2022-11-03 | Jfe Steel Corporation | Metal-strip rapid cooling apparatus, metal-strip rapid cooling method, and method of producing metal strip product |
| CN117642517A (en) | 2021-07-30 | 2024-03-01 | 杰富意钢铁株式会社 | Quenching device, quenching method, method for producing cold-rolled steel sheet, and method for producing plated steel sheet |
| WO2023042795A1 (en) | 2021-09-16 | 2023-03-23 | Ｊｆｅスチール株式会社 | Quenching apparatus, continuous annealing facility, quenching method, steel sheet production method, and plated steel sheet production method |
| CN117999366A (en) | 2021-09-16 | 2024-05-07 | 杰富意钢铁株式会社 | Quenching device, continuous annealing apparatus, quenching method, method for producing steel sheet, and method for producing plated steel sheet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133110A (en) * | 1975-05-15 | 1976-11-18 | Nippon Steel Corp | A method and apparatus for sealing of heat treatment furnaces for stri ps |
| JPS51133114A (en) * | 1975-05-15 | 1976-11-18 | Nippon Steel Corp | A method and apparatus for cooling of strips |
| JPS51133116A (en) * | 1975-05-15 | 1976-11-18 | Nippon Steel Corp | A method and apparatus for cooling of metal strips |
-
1983
- 1983-02-18 JP JP2586483A patent/JPS59153843A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133110A (en) * | 1975-05-15 | 1976-11-18 | Nippon Steel Corp | A method and apparatus for sealing of heat treatment furnaces for stri ps |
| JPS51133114A (en) * | 1975-05-15 | 1976-11-18 | Nippon Steel Corp | A method and apparatus for cooling of strips |
| JPS51133116A (en) * | 1975-05-15 | 1976-11-18 | Nippon Steel Corp | A method and apparatus for cooling of metal strips |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11193418A (en) * | 1997-12-29 | 1999-07-21 | Kobe Steel Ltd | Manufacture of high strength cold rolled steel sheet excellent in flatness characteristic |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59153843A (en) | 1984-09-01 |
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