JPH0548285B2 - - Google Patents
Info
- Publication number
- JPH0548285B2 JPH0548285B2 JP886086A JP886086A JPH0548285B2 JP H0548285 B2 JPH0548285 B2 JP H0548285B2 JP 886086 A JP886086 A JP 886086A JP 886086 A JP886086 A JP 886086A JP H0548285 B2 JPH0548285 B2 JP H0548285B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- temperature section
- steel strip
- cooling
- cooled
- 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 - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 239000007921 spray Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 description 15
- 239000000498 cooling water Substances 0.000 description 12
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- 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、オーステナイト系ステンレス鋼等の
鋼帯を熱処理する竪型連続熱処理炉に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vertical continuous heat treatment furnace for heat treating steel strips such as austenitic stainless steel.
鋼帯の連続熱処理炉の一例として、第２図の概
略縦断面図に示すような、加熱炉１及び図示しな
い燃焼装置等からなる加熱帯Ａと、ガスカーテン
チヤンバ２、上部エアジエツトチヤンバ３、中部
エアジエツトチヤンバ４、下部エアジエツトチヤ
ンバ５、デイピングタンク６等からなる冷却帯Ｂ
とで構成された竪型の連続熱処理炉がある。例え
ばオーステナイト系ステンレス鋼のような鋼帯１
０を加熱帯Ａで約1100℃に加熱し、冷却帯Ｂを例
えば10〜150ｍ／minのような高速で通板させて
100℃以下に急冷するものである。
As an example of a continuous heat treatment furnace for steel strips, as shown in the schematic vertical cross-sectional view of FIG. 3. Cooling zone B consisting of middle air jet chamber 4, lower air jet chamber 5, dipping tank 6, etc.
There is a vertical continuous heat treatment furnace consisting of For example, steel strip 1 such as austenitic stainless steel
0 is heated to approximately 1100℃ in heating zone A, and passed through cooling zone B at a high speed of 10 to 150 m/min.
It is rapidly cooled to below 100℃.
この冷却帯Ｂの高温部ａではガスカーテンチヤ
ンバ２から噴出する燃焼排ガス及び上部エアジエ
ツトチヤンバ３から噴出する冷却用エアによつて
冷却されながら通板する鋼帯１０の温度を、その
出口に装設された温度検出器8aで検出し、ダン
パ１１に指示してその開度を調節し、ブロア９で
吸引してダクト１２を介して上部エアジエツトチ
ヤンバ３に送られる冷却用エアの風量を調節する
ことにより、常時600〜800℃の範囲に冷却する。
中温部ｂ及び低温部ｃでも前述と同様にそれぞれ
の出口に装設された温度検出器８ｂ，８ｃによつ
て鋼帯１０の温度をそれぞれ検出してダンパ１１
を調節し、各各の冷却用エアの風量を調節するこ
とにより、それぞれ、300〜450℃及び150〜250℃
の範囲に冷却する。そして、デイツピングタンク
６の冷却水に浸漬することにより、100℃以下に
冷却し、シンクロール７を介して次工程へ送付す
る。 In the high temperature section a of this cooling zone B, the temperature of the steel strip 10 passing through the steel strip 10 is controlled while being cooled by the combustion exhaust gas ejected from the gas curtain chamber 2 and the cooling air ejected from the upper air jet chamber 3. The temperature is detected by a temperature detector 8a installed in the damper 11, and the opening degree of the damper 11 is adjusted. By adjusting the air volume, it is constantly cooled to a range of 600 to 800 degrees Celsius.
Similarly to the above, in the medium temperature section b and the low temperature section c, the temperature of the steel strip 10 is detected by the temperature detectors 8b and 8c installed at the respective outlets, and the damper 11 is
300-450℃ and 150-250℃ by adjusting the air volume of each cooling air.
Cool to a range of . Then, by immersing it in the cooling water of the dipping tank 6, it is cooled down to 100°C or less, and sent to the next process via the sink roll 7.
高温部ａ、中温部ｂ、低温部ｃにおける鋼帯１
０の冷却をすべて空冷で行うと、その冷却能力が
低いので、膨大な風量を要し、ブロア９の動力が
大きくなつてその消費電力が増大する。そこで、
水冷可能な温度域である中温部ｂを、冷却水のス
プレイか、或いは直接放水するいわゆるラミナ冷
却等によつて冷却すると、その冷却能力が空冷よ
りも高いので大幅な省エネルギーになるが、その
冷却水が鋼帯１０の表面を流下し、低温部ｃの鋼
帯１０をも水冷するようになる。ところが、低温
部ｃで鋼帯１０を水冷すると第３図に示すように
遷移沸騰域に入るため、鋼帯１０の板幅方向にお
ける中央部１０ｂと両端部１０ａ，１０ｃとの冷
却曲線が異なり、第４図及び第５図に示すような
変形が発生するので、従来は中温部ｂの水冷は困
難とされていた。
Steel strip 1 in high temperature section a, medium temperature section b, and low temperature section c
If air cooling is used to completely cool the air conditioner 0, the cooling capacity is low, and a huge amount of air is required, which increases the power of the blower 9 and increases its power consumption. Therefore,
If the medium temperature section b, which is a temperature range that can be cooled by water, is cooled by spraying cooling water or by so-called lamina cooling, which directly discharges water, the cooling capacity is higher than that of air cooling, resulting in significant energy savings, but the cooling Water flows down the surface of the steel strip 10, and the steel strip 10 in the low temperature section c is also cooled by water. However, when the steel strip 10 is water-cooled in the low-temperature section c, it enters the transition boiling region as shown in FIG. Conventionally, it has been considered difficult to water-cool the intermediate temperature section b because deformations as shown in FIGS. 4 and 5 occur.
鋼帯の連続熱処理炉において、高温部と低温部
にはエアジエツトチヤンバを、中温部には水スプ
レイヘツダを配設し、その下方にシールロールと
タンクからなる集水槽を設けると共に集水槽の水
を抜取るライン及びポンプとを設ける。
In a continuous heat treatment furnace for steel strips, air jet chambers are installed in the high-temperature and low-temperature areas, and a water spray header is installed in the medium-temperature area, and a water collection tank consisting of a seal roll and a tank is installed below the header. A line and pump for extracting the water will be provided.
中温部を水冷するこにより冷却効率を高める
が、低温部への冷却水の流下を遮断し、低温部は
冷却水のない空冷とする。 Cooling efficiency is increased by water-cooling the medium-temperature section, but the flow of cooling water to the low-temperature section is blocked, and the low-temperature section is air-cooled without cooling water.
熱処理炉の高温部で600〜800℃に冷却された鋼
帯を中温域においてスプレイによる冷却で更に
300℃〜450℃に冷却し、低温部へ送る、スプレイ
水はスプレイヘツダ下部に設けられたシールロー
ルとタンクとからなる集水槽に集められ、ポンプ
の働きにより抜取りラインから抜取り再利用され
る。
The steel strip, which has been cooled to 600 to 800℃ in the high temperature section of the heat treatment furnace, is further cooled by spraying in the medium temperature range.
The spray water is cooled to 300°C to 450°C and sent to the low-temperature section. It is collected in a collection tank consisting of a seal roll and a tank provided at the bottom of the spray header, and is extracted from the sampling line by the action of a pump and reused.
本発明の一実施例を第１図を用いて説明する。
従来例（第２図）と同一部材には同一の符号を付
し、重複説明は省略する。
An embodiment of the present invention will be described with reference to FIG.
The same members as in the conventional example (FIG. 2) are given the same reference numerals, and redundant explanation will be omitted.
２０は中温部ｂに鋼帯１０の全幅にわたつてそ
の両面に設けられた水スプレイヘツダで、その先
端にはスプレイノズル２０ａがそれぞれ取付けら
れている。２１は鋼帯１０を冷却したスプレイ水
を集めるタンク、２２は冷却水が下方へ流下する
のを防止するシールロールで、鋼帯に傷がつかな
いように耐熱性のフツ素樹脂加工が施されてい
る。これらは集水槽２３を構成する。２４はサク
シヨンロールで鋼帯１０に付着している水を吸引
するためのものである。ブロア２５により吸引さ
れた水はミストセパレータ２６で気液分離され
る。集水槽２３の冷却水は水抜取りライン２７，
２８を通り、ミストセパレータ２６で分離された
水はライン３０からポンプ３１の作動によりそれ
ぞれ吸引し集められ、熱交換機３２にて所望の温
度に熱交換された後ライン３３，３４，３５に送
られ前述のスプレイヘツダ２０に送水される。 A water spray header 20 is provided on both sides of the steel strip 10 over the entire width thereof in the medium temperature section b, and a spray nozzle 20a is attached to each end thereof. 21 is a tank that collects spray water that has cooled the steel strip 10, and 22 is a seal roll that prevents the cooling water from flowing downward, and is treated with a heat-resistant fluororesin to prevent the steel strip from being scratched. ing. These constitute the water collection tank 23. 24 is a suction roll for sucking water adhering to the steel strip 10. The water sucked by the blower 25 is separated into gas and liquid by the mist separator 26. The cooling water in the water collection tank 23 is supplied to the water extraction line 27,
28, the water separated by the mist separator 26 is sucked and collected from the line 30 by the operation of the pump 31, and after being heat exchanged to a desired temperature in the heat exchanger 32, it is sent to the lines 33, 34, and 35. Water is sent to the spray header 20 mentioned above.
３６は中温部ｂの下部における鋼帯１０の温度
を検出する温度検出器で、この検出信号に基づい
てバルブ３７を開閉作動させることにより鋼帯１
０へ噴射する水量を調節し中温部ｂ出口における
温度を300〜450℃に保持する。 36 is a temperature detector that detects the temperature of the steel strip 10 at the lower part of the intermediate temperature section b. Based on this detection signal, the valve 37 is opened and closed, thereby increasing the temperature of the steel strip 10.
The temperature at the outlet of medium temperature section b is maintained at 300 to 450°C by adjusting the amount of water injected into the tank.
このようにスプレイノズル２０ａから噴出され
た冷却水は集水槽２３に集められ循環使用される
ので、鋼帯１０は冷却水の中に浸漬されることは
なく、沸騰現象等による鋼帯へ悪影響を与えるこ
とは全くない。また冷却水が低温部ｃのエアジエ
ツト域へ侵入することがないので鋼帯が変形する
こともない。 In this way, the cooling water spouted from the spray nozzle 20a is collected in the water collection tank 23 and used for circulation, so the steel strip 10 is not immersed in the cooling water, and the steel strip is prevented from being adversely affected by boiling phenomena or the like. I have nothing to give. Furthermore, since the cooling water does not enter the air jet area of the low temperature section c, the steel strip will not be deformed.
(1) 中温部を氷冷としたので、従来装置に比し冷
却能力を高めることができる。
(1) Since the middle temperature section is ice-cooled, the cooling capacity can be increased compared to conventional equipment.
(2) 中温部で鋼帯を冷却した後の冷却水はシール
ロールとタンクからなる集水槽へ集められ循環
使用されるので、冷却水が低温部へ流下するこ
とはない。(2) After cooling the steel strip in the medium temperature section, the cooling water is collected in a water collection tank consisting of a seal roll and a tank and used for circulation, so the cooling water does not flow down to the low temperature section.
従つて低温部における鋼帯の変形も起らない。 Therefore, deformation of the steel strip does not occur in the low temperature section.
第１図は本発明の一実施例を示す概略縦断面図
である。第２図は従来の竪形連続熱処理炉の一例
を示す概略縦断面図、第３図は低温部を水冷とし
た場合の冷却曲線を表わすグラフ、第４図及び第
５図は低温部を水冷とした場合の遷移沸騰による
鋼帯の変形状態を示す説明図で、第４図は鋼帯の
平面図、第５図は第４図の−断面である。
３……上部エアジエツトチヤンバ、５……下部
エアジエツトチヤンバ、２０……水スプレイヘツ
ダ、２１……タンク、２２……シールロール、２
３……集水槽、２７，２８……水抜取りライン、
３１……ポンプ。
FIG. 1 is a schematic vertical sectional view showing an embodiment of the present invention. Figure 2 is a schematic vertical cross-sectional view showing an example of a conventional vertical continuous heat treatment furnace, Figure 3 is a graph showing the cooling curve when the low temperature section is water cooled, and Figures 4 and 5 are the low temperature section water cooled. FIG. 4 is a plan view of the steel strip, and FIG. 5 is a cross-sectional view taken from FIG. 4. 3... Upper air jet chamber, 5... Lower air jet chamber, 20... Water spray header, 21... Tank, 22... Seal roll, 2
3...Water collection tank, 27, 28...Water extraction line,
31...Pump.
Claims (1)
（600〜800℃から300〜450℃）及び低温部（300〜
450℃から150〜250℃）に通して熱処理する連続
熱処理炉において、前記高温部と低温部とにエア
ジエツトチヤンバを設け、前記中温部には水スプ
レイヘツダを設け、前記スプレイヘツダの下部
に、鋼帯を挾むシールロールとスプレイ水を集め
るタンクとからなる集水槽と、同集水槽の水を抜
取るライン及びポンプとを設けたことを特徴とす
る鋼帯の竪形熱処理装置。1 The steel strip is heated in a high temperature section (800℃ to 600℃ or higher), a medium temperature section (600 to 800℃ to 300 to 450℃), and a low temperature section (300 to 450℃).
In a continuous heat treatment furnace for heat treatment from 450°C to 150~250°C, an air jet chamber is provided in the high temperature section and the low temperature section, a water spray header is provided in the medium temperature section, and a water spray header is provided at the bottom of the spray header. A vertical heat treatment apparatus for steel strips, characterized in that it is equipped with a water collection tank consisting of seal rolls that sandwich the strip and a tank that collects spray water, and a line and pump for extracting water from the water collection tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP886086A JPS62167827A (en) | 1986-01-21 | 1986-01-21 | Vertical heat treatment device for steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP886086A JPS62167827A (en) | 1986-01-21 | 1986-01-21 | Vertical heat treatment device for steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62167827A JPS62167827A (en) | 1987-07-24 |
| JPH0548285B2 true JPH0548285B2 (en) | 1993-07-21 |
Family
ID=11704458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP886086A Granted JPS62167827A (en) | 1986-01-21 | 1986-01-21 | Vertical heat treatment device for steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62167827A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4106227B2 (en) * | 2002-03-28 | 2008-06-25 | 新日本製鐵株式会社 | Steel strip cooling equipment |
| KR20040037348A (en) * | 2002-10-28 | 2004-05-07 | 주식회사 포스코 | Vertical type Equipment for cleaning oil in strip grinding line |
-
1986
- 1986-01-21 JP JP886086A patent/JPS62167827A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62167827A (en) | 1987-07-24 |
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