JPH0255612A - Gradually cooling device for steel material on cooling floor - Google Patents
Gradually cooling device for steel material on cooling floorInfo
- Publication number
- JPH0255612A JPH0255612A JP20400788A JP20400788A JPH0255612A JP H0255612 A JPH0255612 A JP H0255612A JP 20400788 A JP20400788 A JP 20400788A JP 20400788 A JP20400788 A JP 20400788A JP H0255612 A JPH0255612 A JP H0255612A
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- cooling
- temperature
- steel
- cooling bed
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 69
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 238000001816 cooling Methods 0.000 title claims abstract description 61
- 239000000463 material Substances 0.000 title claims abstract description 56
- 238000009423 ventilation Methods 0.000 claims description 22
- 238000010583 slow cooling Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract description 9
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002436 steel type Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、冷却床上鋼材の徐冷装置に係り、冷却床上の
棒鋼、形鋼等の鋼材を、目標とする冷却パターンで徐冷
するのに利用される。Detailed Description of the Invention (Industrial Application Field) The present invention relates to an apparatus for slowly cooling steel materials on a cooling bed, and is used to slowly cool steel materials such as steel bars and sections on a cooling bed in a targeted cooling pattern. used for.
（従来の技術）
冷却床上の鋼材を、目標とする冷却パターンで徐冷する
装置としては特開昭５９−３９４１４号公報がある。(Prior Art) Japanese Patent Laid-Open No. 59-39414 discloses an apparatus for slowly cooling steel materials on a cooling bed in a targeted cooling pattern.
この従来の技術は、冷却床上に上部徐冷カバーを設け、
該上部徐冷カバーには複数の通気用ダンパーと被冷却材
入側及び出側の近傍に鋼材温度計を設け、一方鋼材冷却
温度を所望の値に設定する温度設定装置と該温度設定装
置からの入力及び前記鋼材温度計からの入力により通気
用ダンパーを操作する冷速制御装置を設け、更に被冷却
材の下部に下部徐冷カバーを設けたものであり、ベーナ
イトの析出した硬度の高い棒鋼（ＳＣＭ、ＳＮＣＭ等の
合金ｗＡ）は冷間剪断時に剪断面にシャー割れを発生す
ることや、切削工具の寿命が短かくなる等の問題点を解
決した技術である。This conventional technology provides an upper slow cooling cover on the cooling bed,
The upper slow cooling cover is provided with a plurality of ventilation dampers and steel thermometers near the inlet and outlet sides of the material to be cooled, and a temperature setting device for setting the steel material cooling temperature to a desired value, and a temperature setting device from the temperature setting device. A cooling speed control device is installed to operate the ventilation damper based on the input from the steel material thermometer and the input from the steel material thermometer, and a lower slow cooling cover is provided below the material to be cooled. (Alloy wA such as SCM, SNCM, etc.) is a technology that solves problems such as shear cracks occurring on the shear surface during cold shearing and shortening the life of cutting tools.
（発明が解決しようとする課題）
前述した従来の技術はそれなりの有用性は認められるけ
れども、次のような問題点がある。(Problems to be Solved by the Invention) Although the above-described conventional techniques are recognized to have some usefulness, they have the following problems.
■； 下部徐冷カバーはサポートとの干渉が生じるおそ
れが強く、現実には密閉したものが実現できない。■; There is a strong possibility that the lower slow cooling cover will interfere with the support, so in reality, it is impossible to create a hermetically sealed cover.
■； 冷却床上部に例えば中１５ｍ、長さ１００ｍとい
う大損りな徐冷カバーが必要となる。(2) A slow cooling cover, for example 15 m long and 100 m long, is required above the cooling bed.
■； 鋼材両端部より中央部分の方が冷えにくいことか
ら、鋼材長手方向の温度が均一でなくなる。■; Since the central part of the steel material is less likely to cool down than both ends, the temperature in the longitudinal direction of the steel material becomes uneven.
■； 冷却床上の鋼材に搬送ミス等のトラブルが発生し
たとき、上部、下部が徐冷カバーでおおわれていること
から、このカバーを取外してのメンテナンスが必要で、
これは多大の労力と時間を要する。■; When a problem such as a transport error occurs with the steel on the cooling bed, the upper and lower parts are covered with slow cooling covers, so it is necessary to remove these covers for maintenance.
This requires a lot of effort and time.
本発明は、冷却床の外周全体を断熱壁で取囲み、該断熱
壁の鋼材入側と出側とのそれぞれに通気用ダンパーを設
けて、該ダンパーの開度で鋼種と鋼材温度に応じた対流
によって徐冷して、前述の問題点を解決したのが目的で
ある。In the present invention, the entire outer periphery of the cooling bed is surrounded by a heat insulating wall, and a ventilation damper is provided on each of the steel material entry and exit sides of the heat insulating wall, and the opening degree of the damper is adjusted according to the steel type and steel material temperature. The purpose was to solve the above-mentioned problems by slow cooling using convection.
（課題を達成するための手段）
本発明が前述の目的を達成するために講じた技術的手段
の特徴とする処は冷却床１の外周に断熱壁１５．１６．
１７．１８を立設して冷却床１の全周を取囲むとともに
、冷却床１の入側と出側とにおける断熱壁１５．１６の
下部のそれぞれに空気取入れ用の開口部１９．２０を設
け、該開口部１９．２０のそれぞれに複数個の通気用ダ
ンパー２Ｌ２２を鋼材長手方向に設け、該通気用ダンパ
ー２１．２２と対応する冷却床１の入側と出側とに鋼材
温度計２６．２７を設けてあり、鋼材冷却温度を所望の
値に設定する温度設定装置２９と、該温度設定装置２９
からの入力および前記鋼材温度計２６．２７からの人力
により通気用ダンパー２１．２２を操作する冷却制御装
置２８を設けた点にある。(Means for Achieving the Object) The technical means taken by the present invention to achieve the above-mentioned object are characterized by a heat insulating wall 15, 16 on the outer periphery of the cooling bed 1.
17.18 are erected to surround the entire circumference of the cooling bed 1, and openings 19.20 for air intake are provided at the lower parts of the insulation walls 15.16 on the inlet and outlet sides of the cooling bed 1. A plurality of ventilation dampers 2L22 are provided in each of the openings 19.20 in the longitudinal direction of the steel material, and steel material thermometers 26 are provided at the entrance and exit sides of the cooling bed 1 corresponding to the ventilation dampers 21.22. .27, a temperature setting device 29 for setting the steel material cooling temperature to a desired value, and the temperature setting device 29
A cooling control device 28 is provided which operates the ventilation dampers 21, 22 using input from the steel thermometers 26, 27 and human power from the steel thermometers 26, 27.
（作 用）
一般の冷却床での鋼材冷却の大きな要因としては、鋼材
によって熱せられた空気が上昇することにより、冷却床
の下部および側部から冷気が流入して対流することによ
り鋼材が冷却されることが挙げられる。(Function) A major factor in the cooling of steel materials in a general cooling bed is that as air heated by the steel material rises, cold air flows in from the bottom and sides of the cooling bed and convection occurs, which cools the steel material. One example is that it is done.
そこで、冷却床の外周全体を断熱壁で取囲み、断熱壁で
囲まれた冷却床の入側と出側において鋼材温度を測定し
、この測定値と温度設定装置からの入力によって、入側
と出側との断熱壁下部に形成された開口部の開口量（面
積）を、通気用ダンパーを開閉することで調節し、もっ
て、冷間剪断時の鋼材の温度を低下させすぎないように
鋼材とその雰囲気温度で決まる流入空気量によって鋼材
温度を制御する。 （実施例）
以下、図面を参照して本発明の実施例を詳述する。Therefore, the entire outer periphery of the cooling bed is surrounded by an insulating wall, and the steel material temperature is measured at the inlet and outlet sides of the cooling bed surrounded by the insulating wall, and based on this measurement value and input from the temperature setting device, The opening amount (area) of the opening formed at the bottom of the insulation wall between the exit side and the outlet side is adjusted by opening and closing the ventilation damper, thereby preventing the temperature of the steel material from dropping too much during cold shearing. The temperature of the steel material is controlled by the amount of incoming air determined by the temperature of the steel and the ambient temperature. (Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
全体配置を平面的に示す第１図において、１は冷却床で
あり、ランインローラテーブル２、リフタ３、可動レイ
ク４′および固定レイク４”からなるレイク４、アライ
ニングローラ５、集積コンベヤ６およびランアウトテー
ブル７等からなり、第２図に示す周辺基礎８のピット９
上に備えられている。In FIG. 1 which shows the overall arrangement in plan, 1 is a cooling bed, a run-in roller table 2, a lifter 3, a rake 4 consisting of a movable rake 4' and a fixed rake 4'', aligning rollers 5, and an accumulating conveyor 6. pit 9 of the surrounding foundation 8 shown in Figure 2.
provided above.
鋼材１０は第１図の矢示１１よりランインローラテーブ
ル２に搬入され、レイク４等により第１図の矢示１２の
方向に搬送され、ランアウトテーブル７から矢示１３で
示す方向としてコールドシャ１４に搬出され、冷却され
た鋼材１０はシャ１４によって剪断される。The steel material 10 is carried into the run-in roller table 2 in the direction shown by the arrow 11 in FIG. The cooled steel material 10 is sheared by the shear 14.
ここにおいて、ランインローラテーブル２は鋼材１０の
入側であり、ランアウトテーブル７は鋼材１０の出側で
あり、入側及び出側を含む冷却床１の上面は、冷却風が
冷却床の下部のみから流入し易いように周辺基礎８の上
面より少なくとも１．５ ｍ以上高い位置にある。（第
２図の符号Ｈ参照）。Here, the run-in roller table 2 is the inlet side of the steel material 10, and the run-out table 7 is the outlet side of the steel material 10. It is located at least 1.5 m higher than the top surface of the surrounding foundation 8 so that it can easily flow in from the ground. (See symbol H in Figure 2).
冷却床１の外周には、断熱壁１５．１６．１７．１８が
立設され、この断熱壁１５〜１８によって冷却床１の全
周が取囲まれ、断熱壁１５〜１８の立設高さは、レイク
４の上面から冷却床１の入側と出側との間の距離の少な
くとも０．３倍以上の高さとする。Adiabatic walls 15, 16, 17, and 18 are erected around the outer circumference of the cooling bed 1, and the entire circumference of the cooling bed 1 is surrounded by these insulating walls 15 to 18, and the height of the insulating walls 15 to 18 is The height shall be at least 0.3 times the distance from the upper surface of the rake 4 to the inlet and outlet sides of the cooling bed 1.
これにより、断熱壁１５〜１８の上端部からの風の流入
のより直接鋼材が冷却されることを防ぐ構造とする。This provides a structure that prevents the steel material from being directly cooled by the inflow of wind from the upper ends of the heat insulating walls 15 to 18.
冷却床１の入側と出側における断熱壁１５．１６の各下
部には、第２図で示す如く空気取入れ用の開口部１９．
２０がそれぞれ形成されており、この開口部１９．２０
°のそれぞれには鋼材長手方向に複数ｎ個、本図示例で
は５個に区分された通気用ダンパー２１゜２２が設けら
れている。At the bottom of each of the insulating walls 15, 16 on the inlet and outlet sides of the cooling bed 1, there are openings 19. for air intake, as shown in FIG.
20 are formed respectively, and these openings 19.20
A plurality of ventilation dampers 21 and 22 are provided at each of the dampers 21 and 22, which are divided into a plurality of n pieces, five in this illustrated example, in the longitudinal direction of the steel material.
この通気用ダンパー２１．２２は第３図において入側の
通気用ダンパー２１を例に採って示すように、巻取繰出
部２３を有するシャッター２４を電動機２５によって上
下動することによって、開口部１９の開口面積を大小に
調整可能であり、これによって、空気取入れ量が調整さ
れる。These ventilation dampers 21 and 22 are constructed by vertically moving a shutter 24 having a winding and feeding part 23 by an electric motor 25, as shown in FIG. The opening area can be adjusted to be large or small, thereby adjusting the amount of air intake.
通気用ダンパー２１ 、２２は開口面積、従って鋼材雰
囲気に応じた流入空気量を各ゾーン毎に調整できれば、
左右方向（水平方向）に往復されるカーテン構造であっ
ても、又、ブラインド構造であってもよい。If the ventilation dampers 21 and 22 can adjust the opening area, and therefore the amount of incoming air according to the steel atmosphere, for each zone,
It may be a curtain structure that reciprocates in the left-right direction (horizontal direction) or a blind structure.
冷却床１における鋼材１０の流れ（搬送）方向における
入側通気用ダンパー２１と出側通気用ダンパー２２と対
応して入側ではりフタ近傍のレイク下に、出側ではラン
アウトローラテーブル近傍の集積コンベヤ下に、固定レ
イクを支持する柱４ＡのそれぞれにブラケッＩ−２６Ａ
、 ２７Ａを介して温度計２７が固定され、具体的に
はこの温度計は放射温度計である。Corresponding to the inlet ventilation damper 21 and the outlet ventilation damper 22 in the flow (conveyance) direction of the steel material 10 in the cooling bed 1, accumulation is made under the rake near the beam lid on the inlet side and near the runout roller table on the outlet side. Below the conveyor, attach a bracket I-26A to each of the pillars 4A that support the fixed rake.
, 27A, a thermometer 27 is fixed, specifically this thermometer is a radiation thermometer.
第３図において、２８は冷却制御装置であり、各ゾーン
に対応する電動機２５を操作するものである。In FIG. 3, 28 is a cooling control device that operates the electric motor 25 corresponding to each zone.
鋼材冷却温度を所望の値に設定する１台の温度設定装置
（計算機）２９からの入力と複数個の鋼材温度計２６か
らの入力により、各ゾーンに対応する複数の電動機２５
を作動し通気用ダンパ２１を開閉する開閉量を計算機２
９で計算し、ここに、ダンパ開口量従って、鋼材とその
雰囲気温度によって決まる対流空気量を調整し鋼材温度
を制御するものだある。A plurality of electric motors 25 corresponding to each zone are controlled by input from one temperature setting device (calculator) 29 that sets the steel material cooling temperature to a desired value and from a plurality of steel material thermometers 26.
Calculator 2 calculates the amount of opening and closing of ventilation damper 21 by operating
9, and here the temperature of the steel material is controlled by adjusting the amount of convection air, which is determined by the damper opening amount and therefore the steel material and its ambient temperature.
なお、第３図では入側についてのみ図示しているが、出
側についても、冷却制御装置２８等は具備されている。Although only the inlet side is shown in FIG. 3, the cooling control device 28 and the like are also provided on the outlet side.
その他、第２図において、レイク４は可動レイク４゛
と固定レイク４”からなり、可動レイク４”はサポート
４Ｂを介して駆動装置３１により前後（図では左右）に
揺動されて、鋼材１０を刻み送りする。In addition, in Figure 2, rake 4 is movable rake 4
and a fixed rake 4'', and the movable rake 4'' is swung back and forth (left and right in the figure) by a drive device 31 via a support 4B to feed the steel material 10 in pieces.
また、第５図は、断熱壁を建屋３２で構成し、頂部の放
出口３３にもダンパー３４を設けて、ここから対流空気
を放出することを可能にする構造を示している。Further, FIG. 5 shows a structure in which the heat insulating wall is formed by a building 32, and a damper 34 is also provided at the discharge port 33 at the top, making it possible to discharge convective air from there.
次に、実施例における作動を説明する。Next, the operation in the embodiment will be explained.
圧延された鋼材ＩＯは通常数本に切断されてロンドとし
てランインローラテーブル２に矢示１１の通り搬入され
、リフタ３、レイク４を介して矢示１２の方向に搬送さ
れ、この搬送中に冷却される。The rolled steel material IO is usually cut into several pieces and transported as ronds to the run-in roller table 2 as shown by the arrow 11, and transported in the direction of the arrow 12 via the lifter 3 and the rake 4. During this transport, cooled down.
従って、冷却床１の入側においては、測定値のバラツキ
を減少させることから、鋼材１０の温度として鋼材温度
計２６上を鋼材が数本通過したときの最大値を平均した
値をもって鋼材１０の温度とする。Therefore, on the inlet side of the cooling bed 1, in order to reduce the variation in measured values, the temperature of the steel material 10 is determined by averaging the maximum values obtained when several steel materials pass over the steel material thermometer 26. Temperature.
そして、圧延スケ−ジュールによって決まる鋼材１０が
レイク４からシャ１４まで移送される時間ｔ。The time t for the steel material 10 to be transferred from the rake 4 to the shear 14 is determined by the rolling schedule.
と、鋼種と径（形状）によって決まる設定切断温度Ｔｏ
とから第４図に示す鋼材冷却曲線を用いてシャー剪断可
能な入側下限温度Ｔｄｉを温度設定装置（計算機）２９
で計算し、該入側下限温度Ｔｄｉ と入側測定温度Ｔ…
ｉとの差に比例して（比例制御）、ダンパ２１の開口量
を調節するように電動機２５を駆動するのである。and the set cutting temperature To determined by the steel type and diameter (shape)
Using the steel material cooling curve shown in FIG.
Calculate the input side lower limit temperature Tdi and the input side measured temperature T...
The electric motor 25 is driven so as to adjust the opening amount of the damper 21 in proportion to the difference between the damper 21 and the damper 21 (proportional control).
一方、出側においては、鋼種と径（形状）によって決ま
るシャー剪断可能な設定切断温度Ｔｏと圧延スケジュー
ルで決まる鋼材１０が集積コンベヤ６からシャ１４に移
送されるに要するｔ、とから第４図に示す鋼材冷却曲線
を用いてシャー剪断可能な出側下限温度Ｔｄｏを温度設
定装置（計算機）２９で計算し、該出側下限温度Ｔｄｏ
と鋼材温度計２７によって計測した測定温度Ｔｍｏとの
差に比例して（比例制御）出側ダンパ２２の開口量を調
節するように電動器２５を駆動する。On the other hand, on the exit side, the set cutting temperature To that allows shear shearing is determined by the steel type and diameter (shape), and t required for the steel material 10 to be transferred from the accumulating conveyor 6 to the shear 14, which is determined by the rolling schedule, as shown in FIG. The temperature setting device (calculator) 29 calculates the exit side lower limit temperature Tdo that allows shear shearing using the steel material cooling curve shown in
The electric motor 25 is driven so as to adjust the opening amount of the outlet damper 22 in proportion to the difference between the temperature Tmo and the measured temperature Tmo measured by the steel thermometer 27 (proportional control).
これにより、入側及び出側において開口部１９，２０に
おける開口量を通気用ダンパー２１．２２を各ゾーン毎
に開閉して調整することにより、ダンパ開口量従って鋼
材とその雰囲気温度で決まる対流空気量を調節し、鋼材
切断温度を制御することになる。As a result, by adjusting the opening amount of the openings 19 and 20 on the entrance and exit sides by opening and closing the ventilation dampers 21 and 22 for each zone, convection air is generated which is determined by the damper opening amount and the steel material and its ambient temperature. The amount will be adjusted to control the steel cutting temperature.
（発明の効果）
本発明によれば、ＳＣＭ、 ＳＮＣＭ等の高合金鋼や高
炭素鋼では、冷却床下部及び側部から流入する空気量を
減少、すなわち、冷間切断温度をできるだけ低下させな
いことができることから、剪断力低下、剪断面における
シャー割れを防止することができる。(Effects of the Invention) According to the present invention, in high alloy steels and high carbon steels such as SCM and SNCM, the amount of air flowing in from the bottom and sides of the cooling bed is reduced, that is, the cold cutting temperature is kept as low as possible. As a result, a decrease in shear force and shear cracking on the shear surface can be prevented.
この場合、冷却床の上下に徐冷カバーを設けるものでは
なく、冷却床の外周に、断熱壁を立設して、冷却床を取
囲むとともに、冷却床の入側を出側に通気用ダンパーを
設けて、該ダンパーを制御して行なうものであるから、
冷却床上でのトラブルが万一発生しても、これに対して
迅速に対処できるし、実用性も従来装置より優れる。In this case, instead of installing gradual cooling covers above and below the cooling bed, an insulating wall is erected around the outer periphery of the cooling bed to surround the cooling bed, and a ventilation damper is installed between the entrance and exit sides of the cooling bed. This is done by controlling the damper.
Even if a problem should occur on the cooling bed, it can be dealt with quickly, and it is also more practical than conventional equipment.
また、入側と出側の通気用ダンパーを鋼材長手方向に区
分されたゾーンとして通気量を可変（調整）できること
から、鋼材両端部より中央部の方が冷えにくい傾向があ
ったとしても、鋼材長手方向に金属組織的に均一な材料
を得ることができる。In addition, since the ventilation dampers on the entry and exit sides can be divided into zones in the longitudinal direction of the steel material and the amount of ventilation can be varied (adjusted), even if the central part of the steel material tends to cool less easily than the ends of the steel material. A material that is metallographically uniform in the longitudinal direction can be obtained.
更に、冷却床を取囲む断熱壁の高さを高（すればする程
、煙突効果が生じ、対流が自在になり易いし、冷却床下
部での密閉を完全にすればする程保温の通風冷却の効果
が向上するが、これは、冷却床を取囲んで断熱壁を設け
ていることから、保温の通風冷却の効果を充分に発揮で
きる。Furthermore, the higher the height of the insulating wall surrounding the cooling bed, the more likely it is to create a chimney effect and free convection, and the more completely sealed the bottom of the cooling bed, the better the heat retention. This is because a heat insulating wall is provided surrounding the cooling bed, so the effect of ventilation cooling for heat retention can be fully demonstrated.
【図面の簡単な説明】
図面は、本発明の実施例を示し、第１図は全体配置の平
面図、第２図は第１図Ａ−Ａ矢示の断面図、第３図は入
側通気用ダンパ一部分の立面図、第４図は鋼材冷却曲線
を示すグラフ、第５図は本発明の他の実施例を示す全体
概略図である。
１・・・冷却床、１５〜１８・・・断熱壁、１９．２０
・・・開口部、２Ｌ２２・・・通気用ダンパー、２６．
２７・・・鋼材温度計、２８・・・冷却制御装置、２９
・・・温度設定装置（計算器）。
特許出願人 株式会社神戸製鋼所
同 上 山陽特殊製鋼株式会社
□□□□□□１・
Ｉｌｌ？ｆｆ１（対処）[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of the overall arrangement, FIG. 2 is a cross-sectional view taken along arrow A-A in FIG. 1, and FIG. 3 is a view from the entrance side. FIG. 4 is a graph showing a steel material cooling curve, and FIG. 5 is an overall schematic diagram showing another embodiment of the present invention. 1...Cooling bed, 15-18...Insulating wall, 19.20
...opening, 2L22...ventilation damper, 26.
27... Steel thermometer, 28... Cooling control device, 29
...Temperature setting device (calculator). Patent applicant Kobe Steel, Ltd. Same as above Sanyo Special Steel Co., Ltd. □□□□□□1. Ill? ff1 (handling)
Claims (1)
１７）（１８）を立設して冷却床（１）の全周を取囲む
とともに、冷却床（１）の入側と出側とにおける断熱壁
（１５）（１６）の下部のそれぞれに空気取入れ用の開
口部（１９）（２０）を設け、該開口部（１９）（２０
）のそれぞれに複数個の通気用ダンパー（２１）（２２
）を鋼材長手方向に設け、該通気用ダンパー（２１）（
２２）と対応する冷却床（１）の入側と出側とに鋼材温
度計（２６）（２７）を設けてあり、鋼材冷却温度を所
望の値に設定する温度設定装置（２９）と、該温度設定
装置（２９）からの入力および前記鋼材温度計（２６）
（２７）からの入力により通気用ダンパー（２１）（２
２）を操作する冷却制御装置（２６）を設けたことを特
徴とする冷却床上鋼材の徐冷装置。(1) Insulating walls (15) (16) (
17) (18) are erected to surround the entire circumference of the cooling bed (1), and air is supplied to the lower parts of the insulation walls (15) and (16) on the inlet and outlet sides of the cooling bed (1). Openings (19) (20) for intake are provided, and the openings (19) (20) are provided.
), a plurality of ventilation dampers (21) (22
) is provided in the longitudinal direction of the steel material, and the ventilation damper (21) (
22) and a temperature setting device (29) which is provided with steel thermometers (26) and (27) on the inlet and outlet sides of the cooling bed (1) and sets the steel cooling temperature to a desired value; Input from the temperature setting device (29) and the steel thermometer (26)
The ventilation damper (21) (2) receives input from (27).
2) A slow cooling device for steel materials on a cooling bed, characterized in that it is provided with a cooling control device (26) for operating the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20400788A JP2672000B2 (en) | 1988-08-17 | 1988-08-17 | Slow cooling device for steel on cooling floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20400788A JP2672000B2 (en) | 1988-08-17 | 1988-08-17 | Slow cooling device for steel on cooling floor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0255612A true JPH0255612A (en) | 1990-02-26 |
| JP2672000B2 JP2672000B2 (en) | 1997-11-05 |
Family
ID=16483226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20400788A Expired - Lifetime JP2672000B2 (en) | 1988-08-17 | 1988-08-17 | Slow cooling device for steel on cooling floor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2672000B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008255404A (en) * | 2007-04-03 | 2008-10-23 | Dowa Thermotech Kk | Plasma-treating furnace |
| CN103949484A (en) * | 2014-04-09 | 2014-07-30 | 莱芜钢铁集团有限公司 | Cooling bed waste heat recycling device |
| CN105382039A (en) * | 2015-12-16 | 2016-03-09 | 重庆麦拓科技有限公司 | Cooling bed having insulation cover |
| CN105521992A (en) * | 2015-12-09 | 2016-04-27 | 日照钢铁控股集团有限公司 | High strength shipbuilding section manufacturing technology |
| CN107838203A (en) * | 2015-12-09 | 2018-03-27 | 日照钢铁控股集团有限公司 | A kind of H profile steel water-cooling cooling device |
| CN115255302A (en) * | 2022-08-29 | 2022-11-01 | 山东钢铁集团日照有限公司 | Full-process crack control method for high-carbon high-alloy steel |
-
1988
- 1988-08-17 JP JP20400788A patent/JP2672000B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008255404A (en) * | 2007-04-03 | 2008-10-23 | Dowa Thermotech Kk | Plasma-treating furnace |
| CN103949484A (en) * | 2014-04-09 | 2014-07-30 | 莱芜钢铁集团有限公司 | Cooling bed waste heat recycling device |
| CN103949484B (en) * | 2014-04-09 | 2016-01-20 | 莱芜钢铁集团有限公司 | Cold bed waste heat recovery device |
| CN105521992A (en) * | 2015-12-09 | 2016-04-27 | 日照钢铁控股集团有限公司 | High strength shipbuilding section manufacturing technology |
| CN107838203A (en) * | 2015-12-09 | 2018-03-27 | 日照钢铁控股集团有限公司 | A kind of H profile steel water-cooling cooling device |
| CN105382039A (en) * | 2015-12-16 | 2016-03-09 | 重庆麦拓科技有限公司 | Cooling bed having insulation cover |
| CN115255302A (en) * | 2022-08-29 | 2022-11-01 | 山东钢铁集团日照有限公司 | Full-process crack control method for high-carbon high-alloy steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2672000B2 (en) | 1997-11-05 |
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