JPH0216372B2 - - Google Patents
Info
- Publication number
- JPH0216372B2 JPH0216372B2 JP27068185A JP27068185A JPH0216372B2 JP H0216372 B2 JPH0216372 B2 JP H0216372B2 JP 27068185 A JP27068185 A JP 27068185A JP 27068185 A JP27068185 A JP 27068185A JP H0216372 B2 JPH0216372 B2 JP H0216372B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- steel plate
- hot steel
- cooling water
- conveying
- 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 72
- 229910000831 Steel Inorganic materials 0.000 claims description 67
- 239000010959 steel Substances 0.000 claims description 67
- 239000000498 cooling water Substances 0.000 claims description 14
- 230000000452 restraining effect Effects 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000012546 transfer Methods 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
- B21B2261/05—Different constant thicknesses in one rolled product
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は熱鋼板、特に熱間圧延された厚鋼板等
の強制冷却方法および装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvements in a forced cooling method and apparatus for hot steel plates, particularly hot rolled thick steel plates.
（従来の技術）
最近は厚鋼板を熱間圧延した後、直ちに制御冷
却をおこなつて所望の材質を得る、所謂オンライ
ン制御冷却に関する研究が盛んであり、既に多く
の研究発表及び特許が出願されている。一方、主
に造船業界からの要望を受けて、同一圧延鋼板で
２種類の厚みをもつ所謂差厚鋼板を製造している
が、この差厚鋼板も熱間圧延直後に制御冷却を実
施することが必要となつてきている。(Prior art) Recently, there has been much research into so-called online controlled cooling, in which a thick steel plate is hot rolled and then immediately controlled cooled to obtain the desired material quality, and many research publications and patent applications have already been filed. ing. On the other hand, mainly in response to requests from the shipbuilding industry, we manufacture so-called differential thickness steel plates that have two different thicknesses from the same rolled steel plate, but these differential thickness steel plates also require controlled cooling immediately after hot rolling. is becoming necessary.
熱鋼板のオンライン制御冷却装置に関する従来
技術としては、例えば特開昭59−16618号公報が、
又、差厚鋼板の冷却に関する従来技術としては、
例えば特開昭59−232606号公報が知られている。
これ等の従来技術は例えば、第４図に示す装置で
あり、差厚鋼板１は隣接した搬送用ロール２間と
拘束用ロール３間に設けられたノズルヘツダー
８，９に連接したノズル４，５によつて冷却され
る。 As a conventional technology related to an online control cooling device for hot steel plates, for example, Japanese Patent Application Laid-open No. 16618/1983 discloses
In addition, as a conventional technology for cooling steel plates with different thicknesses,
For example, Japanese Patent Application Laid-Open No. 59-232606 is known.
These conventional techniques include, for example, an apparatus shown in FIG. 4, in which a steel plate 1 of different thickness is connected to nozzles 4, 5 connected to nozzle headers 8, 9 provided between adjacent conveying rolls 2 and between adjacent restraining rolls 3. Cooled by.
（発明が解決しようとする問題点）
第４図に示す従来技術の冷却装置は、流量制御
装置４０，４１を上下の１種類のノズル４，５お
よびノズルヘツダー８，９に対応して設置してい
るため、差厚鋼板１の薄肉部h1と厚肉部h2は同じ
水量密度で冷却される。その結果、第５図に示す
ように薄肉部と厚肉部では冷却速度、冷却完了温
度が変わり、薄肉部と厚肉部では強度、靭性等の
材質特性が異なつたものとなる。(Problems to be Solved by the Invention) The conventional cooling device shown in FIG. Therefore, the thin wall portion h 1 and the thick wall portion h 2 of the differential thickness steel plate 1 are cooled with the same water flow density. As a result, as shown in FIG. 5, the cooling rate and cooling completion temperature differ between the thin and thick parts, and the material properties such as strength and toughness differ between the thin and thick parts.
一方、特開昭59−232606公報に開示の技術は、
薄肉部と厚肉部で異なつた材質特性が得られるこ
とを特徴としているが、一般的には薄肉部と厚肉
部は同一の材質特性のほうが望ましく、もし仮
に、薄肉部と厚肉部で異なつた材質特性にする場
合でも、これ等の従来技術では冷却での制御手段
がないため非常に限られた材質特性のものが得ら
れるのみである。 On the other hand, the technology disclosed in Japanese Patent Application Laid-Open No. 59-232606 is
It is characterized by the fact that different material properties can be obtained for the thin and thick parts, but it is generally preferable for the thin and thick parts to have the same material properties. Even if different material properties are to be obtained, these conventional techniques provide only very limited material properties because there is no control means for cooling.
（問題点を解決するための手段、作用）
本発明は前述した事情に鑑みてなされたもので
あり、差厚鋼板等のように長さ方向を異なつた冷
却条件で冷却することが必要な熱鋼板の冷却方法
および冷却装置を提供することを目的とするもの
である。(Means and effects for solving the problems) The present invention has been made in view of the above-mentioned circumstances, and is designed to reduce the amount of heat that needs to be cooled under different cooling conditions in the longitudinal direction, such as with differential thickness steel plates. The object of the present invention is to provide a method and a cooling device for cooling a steel plate.
前記目的を達成するために本発明による熱鋼板
の冷却方法は、差厚鋼板等のように長さ方向で冷
却条件が異なる熱鋼板を冷却する場合には、夫々
の流量制御装置は、予め熱鋼板の長さ方向冷却分
割単位によつて指定された冷却条件（水量密度、
上下水量比）で設定制御しておき、熱鋼板の夫々
の長さ方向冷却分割単位の前後端位置を検出し、
冷却分割単位によつて予め指定された水量を噴射
する上下対のノズルヘツダーのみを熱鋼板の冷却
に使用するように、トラツキングして制御するこ
とを特徴とする。 In order to achieve the above object, the method for cooling a hot steel plate according to the present invention is such that when cooling a hot steel plate that has different cooling conditions in the longitudinal direction, such as a steel plate with a different thickness, each flow rate control device is configured to cool the hot steel plate in advance. Cooling conditions (water volume density,
The setting is controlled by the water/sewage volume ratio), and the front and rear end positions of each longitudinal cooling division unit of the hot steel plate are detected.
It is characterized by tracking and controlling so that only the upper and lower pairs of nozzle headers that inject the amount of water specified in advance by the cooling division unit are used for cooling the hot steel plate.
又、本発明による熱鋼板の冷却装置は、搬送用
ロール上方の対になる位置に複数の拘束用ロール
を配置し、此等の搬送用及び拘束用ロール間に
夫々別の流量制御装置に連接し、熱鋼板の進行方
向に交互に直交配置した２種以上のノズルヘツダ
ーを設け、前記複数個のノズルヘツダーを１組と
して搬送ラインに複数組設け、搬送ラインの入側
に熱鋼板検出手段を設け、熱鋼板の各区域の通過
位置演算と冷却水流量の制御と自動開閉弁の制御
を行う冷却演算制御手段を設けたことを特徴とす
る。 Furthermore, the cooling device for hot steel sheets according to the present invention has a plurality of restraining rolls arranged at paired positions above the conveying rolls, and the conveying and restraining rolls are connected to separate flow rate control devices, respectively. two or more types of nozzle headers arranged alternately orthogonally in the traveling direction of the hot steel plate, plural sets of the plurality of nozzle headers as one set are provided on the conveyance line, and a hot steel plate detection means is provided on the entrance side of the conveyance line, The present invention is characterized in that a cooling calculation control means is provided for calculating the passing position of each zone of the hot steel plate, controlling the flow rate of cooling water, and controlling the automatic opening/closing valve.
（実施例）
以下に本発明の実施例を図面を参照して詳細に
説明する。第１図及び第２図に本発明の一実施例
を、第３図にトラツキング制御の一実施例を示
す。(Example) Examples of the present invention will be described in detail below with reference to the drawings. An embodiment of the present invention is shown in FIGS. 1 and 2, and an embodiment of tracking control is shown in FIG.
第１図は本発明の冷却装置の実施例である冷却
水制御配管系統を説明するためのものである。差
厚鋼板１は、長さL1、板厚h1の薄肉部と長さL2、
板厚h2の厚肉部で構成され、板幅は全長にわたつ
てほぼ同一である。２は搬送用ロール、３は搬送
用ロール２の上方に設置した拘束用ロールであ
り、差厚鋼板１を上方向から押圧している。搬送
用ロール２には、差厚鋼板１の搬送速度および現
在位置をトラツキング制御するための回転数検出
器５０を連設している。８，９は搬送用ロール２
および拘束用ロール３間に上下対に設置したノズ
ルヘツダーであり、差厚鋼板１の板巾方向に所定
ピツチで、複数のスプレーノズル４，５を連接し
ている。 FIG. 1 is for explaining a cooling water control piping system which is an embodiment of the cooling device of the present invention. The differential thickness steel plate 1 has a thin part with a length L 1 and a plate thickness h 1 and a length L 2 ,
It consists of a thick part with a plate thickness of h 2 , and the plate width is almost the same over the entire length. Reference numeral 2 denotes a transport roll, and 3 a restraining roll installed above the transport roll 2, which presses the differential thickness steel plate 1 from above. A rotation speed detector 50 for tracking and controlling the conveying speed and current position of the differential thickness steel plate 1 is connected to the conveying roll 2 . 8 and 9 are transport rolls 2
and nozzle headers installed in upper and lower pairs between the restraining rolls 3, which connect a plurality of spray nozzles 4 and 5 at a predetermined pitch in the width direction of the differential thickness steel plate 1.
１２，１３は高速３方切換弁であり、入側は配
管２８，２９および３２，３３を介して流量制御
装置４０，４１に連接しており、出側の一方は配
管２０，２１を介して各々のノズルヘツダー８，
９に、他方の出側は冷却水をスプレーノズル４，
５を介さずに直接排水ピツト（図示せず）に流す
ための排水用配管２４，２５に連接している。更
に、この配水用配管２４，２５にはオリフイス１
６，１７を連設しているが、このオリフイスは、
高速３方切換弁が２種の出側配管２０，２４又は
２１，２５の何れを選んでも同じ圧力損失となる
ようなオリフイス径に設定してある。以上が上下
対のスプレーノズル群４，５に連接した冷却水制
御配管系統である。 12 and 13 are high-speed three-way switching valves, the inlet side of which is connected to flow control devices 40 and 41 via pipes 28 and 29 and 32 and 33, and the outlet side of which is connected to flow control devices 40 and 41 via pipes 20 and 21. Each nozzle header 8,
9, the other outlet side sprays cooling water through the spray nozzle 4,
The drain pipes 24 and 25 are connected to drain pipes 24 and 25 for direct drainage to a drain pit (not shown) without going through the drain pipe 5. Furthermore, orifices 1 are installed in these water distribution pipes 24 and 25.
6 and 17 are installed in series, but this orifice is
The orifice diameter is set so that the pressure loss is the same regardless of which of the two types of outlet pipes 20, 24 or 21, 25 is selected by the high-speed three-way switching valve. The above is the cooling water control piping system connected to the upper and lower spray nozzle groups 4 and 5.
同様に６，７および１０，１１は搬送用ロール
２および拘束用ロール３間に設置した、他の上下
対のスプレーノズルおよびノズルヘツダーであ
り、１４，１５は高速３方切換弁、３０，３１は
高速３方切換弁の入側用連接配管、２２，２３お
よび２６，２７は高速３方切換弁の出側用連接配
管、１８，１９はオリフイス、４２，４３は流量
制御装置である。流量制御装置４０，４１および
４２，４３は給水装置（図示せず）から冷却水を
供給されている給水ヘツダー３６に連接してい
る。 Similarly, 6, 7 and 10, 11 are other upper and lower pairs of spray nozzles and nozzle headers installed between the conveying roll 2 and the restraining roll 3, 14, 15 are high-speed three-way switching valves, and 30, 31 are 22, 23 and 26, 27 are connecting pipes for the inlet side of the high-speed three-way switching valve, 18, 19 are orifices, and 42, 43 are flow rate control devices. The flow control devices 40, 41 and 42, 43 are connected to a water supply header 36 which is supplied with cooling water from a water supply device (not shown).
第２図は本発明実施例の冷却装置の制御を説明
するためのものである。４５は冷却装置であり、
第１図で説明した各装置で構成されている。５１
は冷却演算制御装置であり、工場管理用計算機
（図示せず）から与えられた差厚鋼板の材質、寸
法および冷却条件等、更に搬送ラインに設置した
鋼板温度計（図示せず）で測定した差厚鋼板の実
測温度等から、冷却装置各構成要素の制御条件を
演算し制御を実施する。但し、下記に説明する搬
送制御装置５２および３方切換弁制御装置５３で
制御を実施する部分は除く。５２は搬送制御装置
であり、冷却演算制御装置５１から与えた通板速
度条件、差厚鋼板長（全長、薄肉部長L1、厚肉
部長L2）及び回転数検出器５０での通板速度実
測値から、冷却装置内の通板速度制御及び差厚鋼
板位置検出のトラツキング制御を実施する。５３
は３方切換弁制御装置であり、搬送制御装置５２
の差厚鋼板トラツキング信号により、予め設定し
たタイミングで各々の高速３方切換弁を切り換え
制御し、差厚鋼板の冷却に使用するスプレーノズ
ルを切り換える。 FIG. 2 is for explaining the control of the cooling device according to the embodiment of the present invention. 45 is a cooling device;
It is composed of each device explained in FIG. 51
is a cooling calculation control device, which calculates the material, dimensions, cooling conditions, etc. of different thickness steel plates given by a factory management computer (not shown), and also measures them with a steel plate thermometer (not shown) installed in the conveyor line. The control conditions for each component of the cooling system are calculated and controlled based on the measured temperature of the steel plate with different thicknesses. However, the portions controlled by the conveyance control device 52 and three-way switching valve control device 53, which will be explained below, are excluded. Reference numeral 52 denotes a conveyance control device, which controls the threading speed conditions given by the cooling arithmetic control device 51, the differential thickness steel plate length (total length, thin section L 1 , thick section L 2 ), and the threading speed determined by the rotation speed detector 50. Based on the actual measurement values, tracking control is performed to control the sheet passing speed in the cooling device and detect the position of the steel sheet with a difference in thickness. 53
is a three-way switching valve control device, and the transfer control device 52
According to the differential thickness steel plate tracking signal, each high-speed three-way switching valve is switched and controlled at a preset timing, and the spray nozzle used for cooling the differential thickness steel plate is switched.
次いで、第３図に従つて具体的な制御実施例に
ついて説明する。流量制御装置４０，４１は、冷
却演算制御装置５１で差厚鋼板薄肉部h1の冷却条
件および鋼板形状制御条件に基づいて演算した上
下各々の水量指令値に設定制御する。同様に流量
制御装置４２，４３は、冷却演算制御装置５１で
差厚鋼板厚肉部h2の冷却条件及び鋼板形状制御条
件量に基づいて演算した上下各々の水量指令値に
設定制御する。 Next, a specific control example will be described with reference to FIG. The flow rate control devices 40 and 41 are set to the upper and lower water flow rate command values calculated by the cooling calculation control device 51 based on the cooling conditions of the thin wall portion h 1 of the differential thickness steel plate and the steel plate shape control conditions. Similarly, the flow rate control devices 42 and 43 are set to the upper and lower water flow rate command values calculated by the cooling calculation control device 51 based on the cooling conditions of the thick portion h 2 of the differential thickness steel plate and the steel plate shape control condition amount.
差厚鋼板１が冷却装置４５に侵入していない
（冷却を開始していない）状態では、流量制御装
置４０，４１で設定制御した冷却水は、高速３方
切換弁１２，１３でスプレーノズル４，５から噴
射するように選択しているが、冷却制御装置４
２，４３で設定制御した冷却水は、高速３方切換
弁１４，１５で排水用配管２６，２７側に流すよ
うに選択している。 When the differential thickness steel plate 1 has not entered the cooling device 45 (cooling has not started), the cooling water set and controlled by the flow rate control devices 40 and 41 is supplied to the spray nozzle 4 by the high-speed three-way switching valves 12 and 13. , 5, but the cooling control device 4
The cooling water set and controlled in steps 2 and 43 is selected to flow to the drainage pipes 26 and 27 by the high-speed three-way switching valves 14 and 15.
なお、高速３方切換弁１２，１３および１４，
１５はスプレーノズル側、又は排水用配管側の何
れを選択しても水路の圧力損失は同じになるよう
なオリフイス１６，１７および１８，１９が設け
てあり、選択方向によつて流量制御装置４０，４
１，４２，４３の流量変更が出ないように考慮さ
れている。又、第２図で説明したように差厚鋼板
１の薄肉先端部、薄肉先端部より距離L1離れた
厚肉先端部および、更に距離L2離れた厚肉後端
部の時々刻々の位置は回転数検出器５０の信号に
基づいて搬送制御装置５２で常時検出している。 In addition, the high-speed three-way switching valves 12, 13 and 14,
Reference numeral 15 is provided with orifices 16, 17 and 18, 19 so that the pressure loss in the water channel is the same regardless of whether the spray nozzle side or the drainage pipe side is selected. ,4
1, 42, and 43 are taken into account so that the flow rate changes do not occur. In addition, as explained in FIG. 2, the instantaneous positions of the thin-walled tip of the differential thickness steel plate 1, the thick-walled tip that is a distance L 1 away from the thin-walled tip, and the thick-walled rear end that is further away from the thin-walled tip by a distance L 2 . is constantly detected by the conveyance control device 52 based on the signal from the rotation speed detector 50.
差厚鋼板１が搬送制御装置５２の指令速度で冷
却装置内に侵入を開始すると、まず薄肉部h1が上
下各々のスプレーノズル４および５から噴射され
る冷却水で冷却される。次いで差厚鋼板の厚肉先
端部が、冷却装置内に侵入を開始しリール２−２
の位置に達すると、高速３方切換弁１２−１，１
３−１および１４−１，１５−１を作動させ、冷
却に使用するスプレーノズルを４−１，５−１か
ら６−１，７−１に切り換える。但し上部のノズ
ルヘツダー、スプレーノズルの図は省略してい
る。更に、差厚鋼板厚肉先端部がロール２−３に
位置に達した時点で、冷却に使用するスプレーノ
ズルを４−２，５−２から６−２，７−２に切り
換える。 When the differential thickness steel plate 1 starts to enter the cooling device at the commanded speed of the conveyance control device 52, the thin wall portion h1 is first cooled by cooling water sprayed from the upper and lower spray nozzles 4 and 5, respectively. Next, the thick tip of the differential thickness steel plate begins to enter the cooling device, and the reel 2-2
When the position is reached, the high-speed three-way switching valve 12-1, 1
3-1, 14-1, and 15-1 are activated, and the spray nozzles used for cooling are switched from 4-1, 5-1 to 6-1, 7-1. However, the upper nozzle header and spray nozzle are not shown. Furthermore, when the tip of the differential thickness steel plate reaches the position of the roll 2-3, the spray nozzles used for cooling are switched from 4-2 and 5-2 to 6-2 and 7-2.
以下同様に、差厚鋼板厚肉先端部がロール２−
(i)に達した時点で１２−（ｉ−１），１３−（ｉ−
１）および１４−（ｉ−１），１５−（ｉ−１）の
高速３方切換弁を作動させて、冷却に使用するス
プレーノズルを４−（ｉ−１）および５−（ｉ−
１）から６−（ｉ−１）および７−（ｉ−１）に切
り換える。以上の制御により、差厚鋼板の薄肉部
と厚肉部は全く異なつた冷却条件での冷却が達成
できる。 Similarly, the tip of the differential thickness steel plate is moved to the roll 2-
When (i) is reached, 12-(i-1), 13-(i-
1), 14-(i-1) and 15-(i-1) are operated to switch the spray nozzles used for cooling to 4-(i-1) and 5-(i-1).
1) to 6-(i-1) and 7-(i-1). By the above control, the thin-walled portion and the thick-walled portion of the differential thickness steel plate can be cooled under completely different cooling conditions.
なお本実施例では、冷却装置の全ノズルヘツダ
ーの入側配管に高速３方切換弁を設けた場合を例
にとつて説明したが、例えば冷却装置の前半部の
みを本発明の装置とし、後半部は従来技術の冷却
装置としても、ほぼ同等の目的が達成できる。 In this embodiment, a case where high-speed three-way switching valves are provided in the inlet pipes of all nozzle headers of a cooling device has been explained as an example, but for example, only the first half of the cooling device is the device of the present invention, and the second half is Almost the same purpose can be achieved using a conventional cooling device.
（発明の効果）
本実施例では差厚鋼板の冷却を例にとつて説明
したが、特に差厚鋼板に限らず例えば、同一板厚
の鋼板でも、鋼板長さの前半部と後半部で冷却条
件を変更して、異なつた材質特性の鋼板を造りた
い場合にも、上記の説明と同様の処理で達成する
ことが出来る。又、その他として、例えば、鋼板
の先端部及び後端部の非定常冷却部と、鋼板中央
部の定常冷却部とで冷却条件を変更して、鋼板全
長に互つて均一な材質を得ようとする場合にも適
用することが出来る。(Effects of the Invention) In this embodiment, cooling of steel plates with different thicknesses has been explained as an example. Even if it is desired to change the conditions to produce a steel plate with different material properties, this can be achieved by the same process as described above. In addition, for example, in order to obtain uniform material quality over the entire length of the steel plate, for example, the cooling conditions are changed between the unsteady cooling section at the tip and rear end of the steel plate and the steady cooling section at the center of the steel plate. It can also be applied when
以上に説明したように、本発明の実施により下
記の効果が得られる。 As explained above, the following effects can be obtained by implementing the present invention.
(1) 厚鋼板の長さ方向に２種類以上の板厚を持
つ、所謂、差厚鋼板のオンライン制御冷却処理
において、夫々の板厚部で指定された任意の冷
却条件での冷却を実施することが出来るように
なり、夫々の板厚部が同一または任意の異なつ
た材質特性の差厚鋼板を製造することが可能と
なる。(1) In the online controlled cooling process for so-called differential thickness steel plates, which have two or more different thicknesses in the longitudinal direction, cooling is performed under arbitrary cooling conditions specified for each thickness section. This makes it possible to manufacture steel plates with different thicknesses, each of which has the same thickness or different material properties.
(2) 全長にわたつて板厚が同じ熱鋼板のオンライ
ン制御冷却処理において、長さ方向を２種類以
上に分割し、夫々の分割域毎に指定された任意
の冷却条件で冷却を実施することが出来るよう
になり、長さ方向で２種類以上の任意の異なつ
た材質特性を持つ厚鋼板を製造することが可能
になる。(2) In online controlled cooling treatment of a hot steel plate that has the same thickness over its entire length, the length direction is divided into two or more types, and cooling is performed under arbitrary cooling conditions specified for each divided area. This makes it possible to manufacture thick steel plates with two or more arbitrary different material properties in the length direction.
(3) 厚熱鋼板のオンライン制御冷却処理におい
て、鋼板先端部と後端部の非定常冷却部と鋼板
中央部の定常冷却部とを、指定された異なつた
冷却条件で冷却することが出来るようになり、
鋼板全長に互つて均一な材質の鋼板を製造する
ことが可能となる。(3) In the online controlled cooling process of high-temperature steel plates, it is possible to cool the unsteady cooling section at the tip and rear end of the steel plate and the steady cooling section at the center of the steel plate under different specified cooling conditions. become,
It becomes possible to manufacture a steel plate of uniform material over the entire length of the steel plate.
第１図は本発明の実施例による冷却装置の冷却
制御配管系統の説明図、第２図は本発明の実施例
による制御装置の構成図、第３図は高速３方切換
弁の制御タイムチヤート図、第４図は従来の冷却
装置の説明図、第５図は差厚鋼板処理の従来技術
の説明図である。図中、
１……差厚熱鋼板、２……搬送用ロール、３…
…拘束用ロール、４，５，６，７……スプレーノ
ズル、８，９，１０，１１……ノズルヘツダー、
１２，１３，１４，１５……高速３方切換弁、２
４，２５，２６，２７……排水用配管、５０……
回転検出器、４０，４１，４２，４３……流量制
御装置、５１……冷却演算制御装置、５２……搬
送制御装置、５３……３方弁制御装置である。
Fig. 1 is an explanatory diagram of a cooling control piping system of a cooling device according to an embodiment of the present invention, Fig. 2 is a configuration diagram of a control device according to an embodiment of the present invention, and Fig. 3 is a control time chart of a high-speed three-way switching valve. FIG. 4 is an explanatory diagram of a conventional cooling device, and FIG. 5 is an explanatory diagram of a conventional technique for processing steel plates of different thickness. In the figure, 1...different thickness hot steel plate, 2...conveyance roll, 3...
...Restraint roll, 4, 5, 6, 7... Spray nozzle, 8, 9, 10, 11... Nozzle header,
12, 13, 14, 15...high-speed 3-way switching valve, 2
4, 25, 26, 27...Drainage piping, 50...
Rotation detector, 40, 41, 42, 43...Flow control device, 51...Cooling calculation control device, 52...Transportation control device, 53...Three-way valve control device.
Claims (1)
合う区域を異なつた冷却条件で搬送しながら冷却
する冷却方法において、 熱鋼板の通過位置情報に基づいて、前記各区域
毎の冷却水量を変更することを特徴とする熱鋼板
の冷却方法。 ２ 熱鋼板を長さ方向に複数の区域に区分し、隣
り合う区域を異なつた冷却条件で搬送しながら冷
却する冷却装置において、 搬送用ロールの対になる位置に複数の拘束ロー
ルを設け、搬送ラインの上下に冷却水流量制御手
段を有する冷却水供給配管を複数設け、搬送用ロ
ール間および拘束用ロール間に、冷却水配管に接
続しその上流側に冷却水の自動開閉弁を有するノ
ズルヘツダーを複数個設けるとともに、前記複数
個のノズルヘツダーを１組として搬送ラインに複
数組設け、搬送ラインの入側に熱鋼板検出手段を
設け、熱鋼板の各区域の通過位置演算と冷却水流
量の制御と自動開閉弁の制御を行う冷却演算制御
手段を設けたことを特徴とする熱鋼板の冷却装
置。 ３ 前記自動開閉弁として３方切替弁を使用する
ことを特徴とする特許請求の範囲第２項記載の熱
鋼板の冷却装置。[Claims] 1. A cooling method in which a hot steel plate is divided into a plurality of zones in the longitudinal direction and adjacent zones are cooled while being conveyed under different cooling conditions, comprising: A method for cooling a hot steel plate, characterized by changing the amount of cooling water for each zone. 2. In a cooling device that divides a hot steel plate into multiple zones in the length direction and cools the adjacent zones while conveying them under different cooling conditions, a plurality of restraining rolls are installed at positions that are paired with the conveying rolls, and the conveying A plurality of cooling water supply pipes each having a cooling water flow rate control means are installed above and below the line, and a nozzle header connected to the cooling water pipe and having an automatic opening/closing valve for the cooling water is installed between the conveying rolls and between the restraining rolls. In addition to providing a plurality of nozzle headers, a plurality of sets of the plurality of nozzle headers are provided in a conveyance line, and hot steel plate detection means is provided on the inlet side of the conveyance line to calculate the passing position of each zone of the hot steel plate and control the cooling water flow rate. A cooling device for hot steel sheets, characterized in that it is provided with a cooling calculation control means for controlling an automatic opening/closing valve. 3. The cooling device for hot steel sheets according to claim 2, wherein a three-way switching valve is used as the automatic opening/closing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27068185A JPS62130222A (en) | 1985-12-03 | 1985-12-03 | Method and apparatus for cooling hot steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27068185A JPS62130222A (en) | 1985-12-03 | 1985-12-03 | Method and apparatus for cooling hot steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62130222A JPS62130222A (en) | 1987-06-12 |
| JPH0216372B2 true JPH0216372B2 (en) | 1990-04-17 |
Family
ID=17489462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27068185A Granted JPS62130222A (en) | 1985-12-03 | 1985-12-03 | Method and apparatus for cooling hot steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62130222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008035510A1 (en) * | 2006-09-19 | 2008-03-27 | Nippon Steel Corporation | Cooling method of steel plate |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4119928B2 (en) | 2006-08-18 | 2008-07-16 | 新日本製鐵株式会社 | Steel plate cooling method |
| GB2484917A (en) * | 2010-10-25 | 2012-05-02 | Siemens Vai Metals Tech Ltd | Method of cooling a longitudinally profiled plate |
| JP2015182102A (en) * | 2014-03-24 | 2015-10-22 | Ｊｆｅスチール株式会社 | Cooling method and cooling facility for lp steel sheet |
| JP6569843B1 (en) * | 2017-12-20 | 2019-09-04 | Ｊｆｅスチール株式会社 | Thick steel plate cooling device and cooling method, and thick steel plate manufacturing equipment and manufacturing method |
| IT201900019181A1 (en) * | 2019-10-17 | 2021-04-17 | Danieli Off Mecc | DISTRIBUTOR TUBE FOR COOLING METALLIC TAPES |
| JP7205517B2 (en) * | 2020-05-14 | 2023-01-17 | Ｊｆｅスチール株式会社 | Rolled material cooling control method and cooling control device |
-
1985
- 1985-12-03 JP JP27068185A patent/JPS62130222A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008035510A1 (en) * | 2006-09-19 | 2008-03-27 | Nippon Steel Corporation | Cooling method of steel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62130222A (en) | 1987-06-12 |
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