JP2002129242A - Continuous heat treatment furnace for metallic strip - Google Patents
Continuous heat treatment furnace for metallic stripInfo
- Publication number
- JP2002129242A JP2002129242A JP2000328733A JP2000328733A JP2002129242A JP 2002129242 A JP2002129242 A JP 2002129242A JP 2000328733 A JP2000328733 A JP 2000328733A JP 2000328733 A JP2000328733 A JP 2000328733A JP 2002129242 A JP2002129242 A JP 2002129242A
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- Japan
- Prior art keywords
- zone
- furnace
- atmosphere
- cooling
- cooling zone
- 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.)
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Links
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Tunnel Furnaces (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、材質が同一の金属
ストリップに処理目的の異なる熱処理を施すことのでき
る金属ストリップの連続熱処理炉に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous heat-treating furnace for metal strips, which is capable of subjecting metal strips of the same material to heat treatment having different processing purposes.
【０００２】[0002]
【従来の技術】従来、たとえば、銅ストリップ（以下、
ストリップという）においては、完全焼鈍（銅の再結晶
温度以上での焼鈍）処理と歪み取り焼鈍（銅の再結晶温
度以下での焼鈍）処理を炉温の設定を変えることにより
同一の連続熱処理炉（以下、炉という）で行うことがあ
る。2. Description of the Related Art Conventionally, for example, a copper strip (hereinafter, referred to as a copper strip) has been used.
In the same continuous heat treatment furnace, the complete annealing (annealing above the recrystallization temperature of copper) and the strain relief annealing (annealing below the recrystallization temperature of copper) are performed by changing the furnace temperature. (Hereinafter referred to as a furnace).
【０００３】この炉Ｔは、たとえば、図３に示すよう
に、加熱帯１、均熱帯２、徐冷帯３および冷却帯４で構
成されるとともに、前記冷却帯４の抽出側からファン５
により冷却帯４の炉内雰囲気を吸引してクーラー６によ
り冷却したのち、雰囲気循環路Ｐ0から流量調整弁Ｖ1〜
Ｖ4を介して前記加熱帯１、均熱帯２、徐冷帯３および
冷却帯４へ選択的に供給可能となっている。[0003] As shown in FIG. 3, the furnace T comprises a heating zone 1, a soaking zone 2, a slow cooling zone 3 and a cooling zone 4, and a fan 5 from the extraction side of the cooling zone 4.
By After cooling by the cooler 6 by sucking furnace atmosphere of the cooling zone 4, the flow control valve V 1 ~ from the atmosphere circulation path P 0
The heating zone 1 through V 4, a soaking zone 2, and has a selectively be supplied to Johiyatai 3 and cooling zone 4.
【０００４】そして、完全焼鈍処理においては、加熱帯
１および均熱帯２の炉温を６００〜８００℃まで昇温し
てストリップを５００℃まで加熱し、流量調整弁Ｖ3，
Ｖ4を開、流量調整弁Ｖ1，Ｖ2を閉として冷却雰囲気を
徐冷帯３および冷却帯４に供給して各々所定温度として
操業する。[0004] In the complete annealing treatment, the furnace temperature of the heating zone 1 and the soaking zone 2 is raised to 600 to 800 ° C to heat the strip to 500 ° C, and the flow rate adjusting valve V 3 ,
The V 4 open, to operate the flow control valve V 1, V 2 as each predetermined temperature by supplying a cooling atmosphere annealing zone 3 and the cooling zone 4 is closed.
【０００５】また、歪み取り焼鈍処理においては、加熱
帯１および均熱帯２の炉温を４５０〜５００℃まで昇温
してストリップを４００℃まで加熱し、流量調整弁
Ｖ3，Ｖ4を開、流量調整弁Ｖ1，Ｖ2を閉として冷却雰囲
気を徐冷帯３および冷却帯４に供給して各々所定温度と
して操業する。In the strain relief annealing treatment, the furnace temperature of the heating zone 1 and the soaking zone 2 is raised to 450 to 500 ° C. to heat the strip to 400 ° C., and the flow control valves V 3 and V 4 are opened. Then, the flow control valves V 1 and V 2 are closed, and the cooling atmosphere is supplied to the slow cooling zone 3 and the cooling zone 4 to operate at a predetermined temperature.
【０００６】このように、完全焼鈍処理と歪み取り焼鈍
処理とでは炉温に大きな差があるので、完全焼鈍処理か
ら歪み取り焼鈍処理に処理条件を変更する際には一旦炉
温を下げなければならない。このとき、前記各流量調整
弁Ｖ1〜Ｖ4を開として前記各帯に冷却雰囲気を循環供給
し、降温時間を短縮している。As described above, since there is a large difference in the furnace temperature between the complete annealing and the strain relief annealing, when changing the processing conditions from the complete annealing to the strain relief annealing, the furnace temperature must be lowered once. No. At this time, the flow control valves V 1 to V 4 are opened to circulate and supply the cooling atmosphere to the respective zones, thereby reducing the temperature lowering time.
【０００７】さらに、炉Ｔの操業を停止する際にも前記
処理条件を変更する時と同様に雰囲気循環路Ｐ0を利用
して前記各帯に冷却雰囲気を循環供給し、炉内を強制冷
却している。Furthermore, by utilizing the atmosphere circulation path P 0 similarly to the case of changing the processing conditions even when stopping the operation of the furnace T circulated supplying cooling atmosphere to the each band, forced cooling in the furnace are doing.
【０００８】ところで、前記ストリップには、圧延の際
の油分（圧延油）が２０〜３０ｍｇ／ｍ2付着している
ので、この圧延油が炉内に侵入するのを防止するために
炉Ｔの上流でストリップを洗浄、脱脂し、付着油分を１
ｍｇ／ｍ2以下にしている。By the way, since oil (rolling oil) at the time of rolling adheres to the strip in an amount of 20 to 30 mg / m 2 , the rolling oil of the furnace T is prevented in order to prevent the rolling oil from entering the furnace. Wash and degrease the strip upstream to remove oil
mg / m 2 or less.
【０００９】しかしながら、ストリップに付着して炉内
に侵入する前記微量（１ｍｇ／ｍ2以下）の圧延油は炉
内で加熱され蒸発する。この圧延油は６００℃程度で加
熱分解されるので、完全焼鈍処理においては加熱帯（６
００〜８００℃）で完全に分解されてしまい、特に問題
にはならない。However, the minute amount (1 mg / m 2 or less) of the rolling oil adhering to the strip and entering the furnace is heated and evaporated in the furnace. Since this rolling oil is thermally decomposed at about 600 ° C., the heating zone (6
(00-800 ° C.), which is not a problem.
【００１０】ところが、歪み取り焼鈍処理の場合、定常
運転時において、たとえば、炉内温度は加熱帯１および
均熱帯２で４５０〜５００℃、徐冷帯３で２２０℃、冷
却帯４で５０℃に制御されているため、蒸発した圧延油
（以下、蒸発油分という）は加熱分解することなく蒸気
の状態でファン５の吸引力にもとづく炉内雰囲気の流れ
に乗り、炉内を矢印のように移動して行き、この蒸発油
分が冷却帯４で凝縮し、油滴となってストリップに滴下
するという問題があった。However, in the case of the strain relief annealing, during normal operation, for example, the furnace temperature is 450 to 500 ° C. in the heating zone 1 and the soaking zone 2, 220 ° C. in the slow cooling zone 3, and 50 ° C. in the cooling zone 4. The evaporating rolling oil (hereinafter referred to as “evaporated oil component”) rides on the flow of the atmosphere in the furnace based on the suction force of the fan 5 in a vapor state without being thermally decomposed. There is a problem that the evaporating oil condenses in the cooling zone 4 and becomes oil droplets and drops on the strip.
【００１１】また、前記処理条件を完全焼鈍処理から歪
み取り焼鈍処理へ処理条件を変更する際、あるいは、炉
Ｔの操業を停止する際にも雰囲気循環路Ｐ0を利用して
炉内を強制冷却するので、加熱帯１、均熱帯２、徐冷帯
３からの高温の炉内雰囲気がファン５により吸引されて
冷却帯４へ侵入することになり、前記炉内雰囲気中の蒸
発油分が冷却帯４で凝縮してストリップへ滴下するとい
う問題があった。Further, when changing the process conditions the processing conditions from full annealing to strain relief annealing treatment, or force a furnace by utilizing the atmosphere circulation path P 0 even when stopping the operation of the furnace T Since cooling is performed, the high-temperature furnace atmosphere from the heating zone 1, the soaking zone 2, and the slow cooling zone 3 is sucked by the fan 5 and enters the cooling zone 4, and the evaporated oil in the furnace atmosphere is cooled. There was a problem that it condensed in zone 4 and dropped on the strip.
【００１２】[0012]
【発明が解決しようとする課題】そこで、雰囲気循環路
Ｐ0とは別に前記冷却帯４に、ファン７、クーラー８お
よび油分除去装置９を有する循環洗浄路Ｐを設け、冷却
帯４の炉内雰囲気中の蒸発油分を除去しているが、冷却
帯４に侵入した蒸発油分の全てを除去するのは非常に困
難であり、蒸発油分の一部が循環洗浄路Ｐで処理されず
に凝縮して油滴となってストリップに滴下するため、前
記問題を完全に解決することができなかった。このこと
は、炉Ｔの定常運転時のみならず、炉Ｔの停止時の急速
冷却時あるいは処理条件の変更時においても同様であ
る。[SUMMARY OF THE INVENTION Therefore, separately from the cooling zone 4 to the atmosphere circulation path P 0, the fan 7, cooler 8 and circulating wash path P provided with oil removal device 9, in the furnace cooling zone 4 Although the evaporated oil in the atmosphere is removed, it is very difficult to remove all the evaporated oil that has entered the cooling zone 4, and a part of the evaporated oil is condensed without being treated in the circulation washing path P. However, the above problem could not be completely solved because oil droplets were dropped on the strip. This is the same not only at the time of steady operation of the furnace T, but also at the time of rapid cooling when the furnace T is stopped or at the time of changing processing conditions.
【００１３】また、図４に示すように、前記循環洗浄路
Ｐを徐冷帯３に設け、この循環洗浄路Ｐのクーラー８で
徐冷帯３の温度を所定値に制御しながら蒸発油分を除去
し、蒸発油分が冷却帯４に侵入するのを防止する方法も
あるが、この方法では、炉Ｔの定常運転時においては、
徐冷帯３から冷却帯４に侵入する炉内雰囲気中に蒸発油
分が存在せず、油滴によるストリップの汚染を防止する
効果があるものの、炉Ｔの停止時あるいは処理条件の変
更時には、ファン５、クーラー６からの冷却雰囲気を加
熱帯１、均熱帯２へも供給するため、蒸発油分を含有す
る加熱帯１および均熱帯２の炉内雰囲気が全量、冷却帯
４に流入することとなり、蒸発油分の凝縮滴下を防止で
きないという問題があった。As shown in FIG. 4, the circulation washing path P is provided in the slow cooling zone 3, and the cooler 8 of the circulation washing path P controls the temperature of the slow cooling zone 3 to a predetermined value to reduce the amount of evaporated oil. There is also a method of removing the evaporated oil to prevent the oil from entering the cooling zone 4. However, in this method, during the steady operation of the furnace T,
Although there is no evaporated oil in the atmosphere in the furnace that enters the cooling zone 4 from the slow cooling zone 3 and has an effect of preventing contamination of the strip by oil droplets, when the furnace T is stopped or processing conditions are changed, the fan 5. Since the cooling atmosphere from the cooler 6 is also supplied to the heating zone 1 and the soaking zone 2, the entire atmosphere in the furnace of the heating zone 1 and the soaking zone 2 containing the evaporated oil will flow into the cooling zone 4. There is a problem that it is not possible to prevent the condensation and dropping of the evaporated oil.
【００１４】そこで、本発明者は前記問題を解決するた
めに種々検討した結果、冷却帯での油滴の発生は、炉の
定常運転時であれ、炉の停止時または処理条件の変更時
であれ、徐冷帯から冷却帯へ蒸発油分を含有する炉内雰
囲気が侵入することにより起こることを見出した。The present inventor has conducted various studies to solve the above-mentioned problems. As a result, the generation of oil droplets in the cooling zone occurs when the furnace is in steady operation, when the furnace is stopped, or when processing conditions are changed. However, it has been found that the phenomenon occurs when the atmosphere in the furnace containing the evaporated oil enters the cooling zone from the slow cooling zone.
【００１５】したがって、本発明は、炉の定常運転時お
よび炉の停止時あるいは処理条件の変更時において、加
熱帯、均熱帯および徐冷帯の雰囲気が冷却帯に侵入する
のを防止して前記課題を解決することのできる金属スト
リップの連続熱処理炉を提供することを目的とする。Therefore, the present invention prevents the atmospheres of the heating zone, the solitary zone and the slow cooling zone from entering the cooling zone during the steady operation of the furnace, when the furnace is shut down, or when the processing conditions are changed. An object of the present invention is to provide a continuous heat treatment furnace for metal strip that can solve the problem.
【００１６】[0016]
【課題を解決するための手段】本発明は、前記目的を達
成するために、加熱帯、均熱帯、徐冷帯および冷却帯で
構成される金属ストリップの連続熱処理炉において、フ
ァンにより前記冷却帯から取り出した炉内雰囲気をクー
ラーで冷却したのち流量調整弁を介して前記冷却帯に供
給する第１冷却雰囲気循環路を前記冷却帯に設けるとと
もに、ファンにより前記徐冷帯から取り出した炉内雰囲
気をクーラーで冷却し、この冷却により凝縮した炉内雰
囲気中の油分を油分除去装置で除去した浄化雰囲気を流
量調整弁を介して前記加熱帯、均熱帯および徐冷帯のそ
れぞれへ選択的に供給可能とした第２冷却雰囲気循環路
を設けた構成としたものである。According to the present invention, there is provided a continuous heat treatment furnace for a metal strip comprising a heating zone, a soaking zone, a slow cooling zone and a cooling zone. After the furnace atmosphere taken out of the furnace is cooled by a cooler, a first cooling atmosphere circulation path is supplied to the cooling zone via a flow control valve in the cooling zone, and the furnace atmosphere taken out of the slow cooling zone by a fan is provided. Is cooled by a cooler, and the purified atmosphere in which the oil in the furnace atmosphere condensed by the cooling is removed by an oil removing device is selectively supplied to each of the heating zone, the solitary zone and the slow cooling zone via a flow rate control valve. The configuration is such that a second cooling atmosphere circulation path is provided.
【００１７】また、加熱帯、均熱帯、徐冷帯および冷却
帯で構成される金属ストリップの連続熱処理炉におい
て、ファンにより前記徐冷帯から取り出した炉内雰囲気
をクーラーで冷却し、この冷却により凝縮した炉内雰囲
気中の油分を油分除去装置で除去した浄化雰囲気を流量
調整弁を介して前記加熱帯、均熱帯、徐冷帯および冷却
帯のそれぞれへ選択的に供給可能とした第３冷却雰囲気
循環路を設けた構成としたものである。In a continuous heat treatment furnace for a metal strip comprising a heating zone, a soaking zone, a slow cooling zone, and a cooling zone, the atmosphere in the furnace taken out of the slow cooling zone by a fan is cooled by a cooler. Third cooling in which a purified atmosphere in which oil in the furnace atmosphere condensed has been removed by an oil removing device can be selectively supplied to each of the heating zone, the soaking zone, the slow cooling zone, and the cooling zone via a flow control valve. This is a configuration in which an atmosphere circulation path is provided.
【００１８】[0018]
【発明の実施の形態】つぎに、本発明にかかる金属スト
リップの連続熱処理炉（以下、炉という）Ｔの実施形態
について図１、図２にしたがって説明する。図１は本発
明の第１の実施の形態を示し、炉Ｔの冷却帯４にはその
抽出側からファン５により冷却帯４の炉内雰囲気を吸引
してクーラー６により冷却したのち、当該冷却帯４の装
入側に流量調整弁Ｖ4を介して返送する第１冷却雰囲気
循環路Ｐａが設けてある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a continuous heat treatment furnace (hereinafter, referred to as a furnace) T for a metal strip according to the present invention will be described with reference to FIGS. FIG. 1 shows a first embodiment of the present invention. In a cooling zone 4 of a furnace T, the atmosphere inside the furnace of the cooling zone 4 is sucked by a fan 5 from the extraction side thereof, cooled by a cooler 6, and then cooled. first cooling atmosphere circulation path Pa for returning to the loading side of the strip 4 through the flow regulating valve V 4 is provided.
【００１９】また、徐冷帯３の抽出側からファン７によ
り徐冷帯３の炉内雰囲気を吸引してクーラー８により冷
却したのち油分除去装置９により油分を除去して浄化さ
れた雰囲気を流量調整弁Ｖ1，Ｖ2，Ｖ3により加熱帯
１、均熱帯２および徐冷帯３の装入側へ選択的に供給可
能な第２冷却雰囲気循環路Ｐｂが設けてある。The atmosphere inside the furnace of the slow cooling zone 3 is sucked from the extraction side of the slow cooling zone 3 by the fan 7 and cooled by the cooler 8, and then the oil is removed by the oil removing device 9 to purify the purified atmosphere. A second cooling atmosphere circulation path Pb is provided which can be selectively supplied to the charging side of the heating zone 1, the soaking zone 2 and the slow cooling zone 3 by adjusting valves V 1 , V 2 and V 3 .
【００２０】したがって、完全焼鈍処理あるいは歪み取
り焼鈍処理の定常運転時においては、ファン５，７およ
びクーラー６，８を作動させ、流量調整弁Ｖ3，Ｖ4を
開、流量調整弁Ｖ1，Ｖ2を閉として操業する。すなわ
ち、冷却帯４および徐冷帯３の炉内雰囲気はそれぞれ独
立して冷却制御されるため、徐冷帯３から冷却帯４への
炉内雰囲気の流れが形成されず、冷却帯４での蒸発油分
の凝縮滴下はない。Therefore, during the steady operation of the complete annealing process or the strain relief annealing process, the fans 5, 7 and the coolers 6, 8 are operated, the flow control valves V 3 , V 4 are opened, and the flow control valves V 1 , V 1 , V 2 are used . the V 2 to operate as closed. That is, since the atmospheres in the furnace of the cooling zone 4 and the annealing zone 3 are controlled independently of each other, the flow of the atmosphere in the furnace from the annealing zone 3 to the cooling zone 4 is not formed. There is no condensation drop of the evaporated oil.
【００２１】なお、完全焼鈍処理の定常運転時には、前
述のごとく蒸発油分は加熱帯１で完全に分解されるので
冷却帯４における蒸発油分の凝縮はないが、流量調整弁
Ｖ1，Ｖ2，Ｖ3，Ｖ4の開閉動作は前記歪み取り焼鈍処理
時と同じである。During the steady operation of the complete annealing process, the evaporated oil is completely decomposed in the heating zone 1 as described above, so that there is no condensation of the evaporated oil in the cooling zone 4. However, the flow control valves V 1 , V 2 , The opening and closing operations of V 3 and V 4 are the same as those during the strain relief annealing.
【００２２】また、炉の停止時あるいは完全焼鈍処理か
ら歪み取り焼鈍処理へ処理条件を変更する際において
は、流量調整弁Ｖ1，Ｖ2，Ｖ3を開としてクーラー８で
冷却された冷却雰囲気が加熱帯１、均熱帯２および徐冷
帯３に供給されるが、加熱帯１、均熱帯２および徐冷帯
３への冷却雰囲気の供給量はファン７での吸気量と等し
く、徐冷帯３から冷却帯４への雰囲気の移動がないた
め、冷却帯４への蒸発油分の侵入による油滴の滴下はな
い。When the furnace is stopped or when the processing conditions are changed from the complete annealing to the strain relief annealing, the cooling atmosphere cooled by the cooler 8 is opened by opening the flow control valves V 1 , V 2 and V 3. Is supplied to the heating zone 1, the soaking zone 2 and the slow cooling zone 3, but the supply amount of the cooling atmosphere to the heating zone 1, the soaking zone 2 and the slow cooling zone 3 is equal to the intake amount of the fan 7, and Since there is no movement of the atmosphere from the zone 3 to the cooling zone 4, there is no dripping of oil droplets due to the invasion of the evaporated oil into the cooling zone 4.
【００２３】図２は、第２の実施の形態を示し、図１に
おけるファン５とクーラー６をなくし、ファン７で吸引
した徐冷帯３の炉内雰囲気をクーラー８で冷却し、油分
除去装置９により油分を除去された冷却雰囲気を流量調
整弁Ｖ1〜Ｖ4により加熱帯１、均熱帯２、徐冷帯３およ
び冷却帯４へ選択的に供給可能とした第３冷却雰囲気循
環路Ｐｃを設けたものである。FIG. 2 shows a second embodiment, in which the fan 5 and the cooler 6 in FIG. 1 are eliminated, and the atmosphere in the furnace of the slow cooling zone 3 sucked by the fan 7 is cooled by the cooler 8 to remove the oil. heating zone 1 by the flow control valve V 1 ~V 4 the cooling atmosphere is remove oil by 9, a soaking zone 2, the third cooling atmosphere circulation path Pc which was selectively be supplied to Johiyatai 3 and the cooling zone 4 Is provided.
【００２４】そして、完全焼鈍処理あるいは歪み取り焼
鈍処理の定常運転時には、図１の場合と同様、流量調整
弁Ｖ3，Ｖ4を開、流量調整弁Ｖ1，Ｖ2を閉とし、炉停止
時あるいは完全焼鈍処理から歪み取り焼鈍処理へ処理条
件を変更する際には、各流量調整弁Ｖ1〜Ｖ4を開とする
ものである。いずれの場合においても、徐冷帯３の抽出
側からのみ炉内雰囲気を吸引するため、冷却帯４から徐
冷帯３への雰囲気の流れが形成され、徐冷帯３から冷却
帯４への雰囲気の侵入は完全に防止できるので、冷却帯
４での蒸発油分の凝縮による油滴の滴下は生じない。During the steady operation of the complete annealing process or the strain relief annealing process, the flow control valves V 3 and V 4 are opened, the flow control valves V 1 and V 2 are closed, and the furnace is stopped, as in the case of FIG. when changing the processing conditions from the time or full annealing to strain relief annealing treatment is to each flow control valve V 1 ~V 4 open. In any case, since the furnace atmosphere is sucked only from the extraction side of the annealing zone 3, an atmosphere flow from the cooling zone 4 to the annealing zone 3 is formed. Since the intrusion of the atmosphere can be completely prevented, no oil droplets drop due to the condensation of the evaporated oil in the cooling zone 4.
【００２５】なお、処理する金属ストリップは前記銅ス
トリップに限定するものではなく、付着油の分解温度以
下の温度で熱処理するものであれば、たとえば、高ニッ
ケル鋼ストリップ（完全焼鈍処理で最高炉温９５０℃、
歪み取り焼鈍処理で最高炉温６００℃）等であっても同
様に付着油の凝縮滴下を防止できる。The metal strip to be treated is not limited to the copper strip described above. If the metal strip is to be heat-treated at a temperature lower than the decomposition temperature of the adhering oil, for example, a high nickel steel strip (maximum furnace temperature in complete annealing) 950 ° C,
Even if the maximum furnace temperature is 600 ° C. in the strain relief annealing process, the condensation and dripping of the adhering oil can be similarly prevented.
【００２６】[0026]
【発明の効果】以上の説明で明らかなように、第１の発
明によれば、加熱帯、均熱帯および徐冷帯の冷却雰囲気
は、徐冷帯からの炉内雰囲気を使用し、冷却帯の冷却雰
囲気は冷却帯からの炉内雰囲気をそれぞれ独立して循環
使用するため徐冷帯から冷却帯への雰囲気の流れがな
く、蒸発油分を含んだ炉内雰囲気が冷却帯へ侵入せず、
油滴の滴下によるストリップの汚染を防止することがで
きるという効果を奏する。As apparent from the above description, according to the first aspect, the cooling atmosphere in the heating zone, the soaking zone and the slow cooling zone uses the atmosphere in the furnace from the slow cooling zone, Since the cooling atmosphere of the furnace uses the atmosphere inside the furnace from the cooling zone independently and circulates independently, there is no flow of atmosphere from the slow cooling zone to the cooling zone, and the atmosphere inside the furnace containing the evaporated oil does not enter the cooling zone,
There is an effect that the contamination of the strip due to the drop of the oil droplet can be prevented.
【００２７】また、第２の発明によれば、徐冷帯からの
炉内雰囲気を冷却したのち油分を除去し、この冷却雰囲
気を加熱帯、均熱帯、徐冷帯および冷却帯へ供給するた
め、徐冷帯からの雰囲気は冷却帯へ流れることがなく、
前記第１発明と同一効果を奏することができる。According to the second aspect of the present invention, after cooling the furnace atmosphere from the slow cooling zone, the oil is removed, and this cooling atmosphere is supplied to the heating zone, the solitary zone, the slow cooling zone, and the cooling zone. The atmosphere from the slow cooling zone does not flow to the cooling zone,
The same effect as the first invention can be obtained.
【図１】 本発明の第１の実施形態を示す金属ストリッ
プ連続熱処理炉の説明図。FIG. 1 is an explanatory view of a metal strip continuous heat treatment furnace showing a first embodiment of the present invention.
【図２】 本発明の第２の実施形態を示す金属ストリッ
プ連続熱処理炉の説明図。FIG. 2 is an explanatory diagram of a metal strip continuous heat treatment furnace showing a second embodiment of the present invention.
【図３】 従来の金属ストリップ連続熱処理炉の説明
図。FIG. 3 is an explanatory view of a conventional metal strip continuous heat treatment furnace.
【図４】 他の実施例を示す金属ストリップ連続熱処理
炉の説明図。FIG. 4 is an explanatory view of a metal strip continuous heat treatment furnace showing another embodiment.
１…加熱帯、２…均熱帯、３…徐冷帯、４…冷却帯、
５，７…ファン、６，８…クーラー、９…油分除去装
置、Ｐａ…第１冷却雰囲気循環路、Ｐｂ…第２冷却雰囲
気循環路、Ｐｃ…第３冷却雰囲気循環路、Ｖ1〜Ｖ4…流
量調整弁。1: heating zone, 2: tropical zone, 3: slow cooling zone, 4: cooling zone,
5,7 ... Fan, 6,8 ... cooler, 9 ... oil removal device, Pa ... first cooling atmosphere circulation path, Pb ... second cooling atmosphere circulation path, Pc ... third cooling atmosphere circulation path, V 1 ~V 4 ... Flow control valve.
Claims (2)
構成される金属ストリップの連続熱処理炉において、フ
ァンにより前記冷却帯から取り出した炉内雰囲気をクー
ラーで冷却したのち流量調整弁を介して前記冷却帯に供
給する第１冷却雰囲気循環路を前記冷却帯に設けるとと
もに、ファンにより前記徐冷帯から取り出した炉内雰囲
気をクーラーで冷却し、この冷却により凝縮した炉内雰
囲気中の油分を油分除去装置で除去した浄化雰囲気を流
量調整弁を介して前記加熱帯、均熱帯および徐熱帯のそ
れぞれへ選択的に供給可能とする第２冷却雰囲気循環路
を設けたことを特徴とする金属ストリップの連続熱処理
炉。In a continuous heat treatment furnace for a metal strip comprising a heating zone, a soaking zone, a slow cooling zone and a cooling zone, an atmosphere in the furnace taken out of the cooling zone by a fan is cooled by a cooler, and then a flow control valve is provided. A first cooling atmosphere circulation path to be supplied to the cooling zone through the cooling zone is provided in the cooling zone, and the furnace atmosphere taken out of the slow cooling zone by a fan is cooled by a cooler. A second cooling atmosphere circulation path is provided that enables a purified atmosphere from which oil has been removed by an oil removal device to be selectively supplied to each of the heating zone, the solitary zone, and the gradual zone via a flow control valve. Continuous heat treatment furnace for metal strip.
構成される金属ストリップの連続熱処理炉において、フ
ァンにより前記徐冷帯から取り出した炉内雰囲気をクー
ラーで冷却し、この冷却により凝縮した炉内雰囲気中の
油分を油分除去装置で除去した浄化雰囲気を流量調整弁
を介して前記加熱帯、均熱帯、徐冷帯および冷却帯のそ
れぞれへ選択的に供給可能とする第３冷却雰囲気循環路
を設けたことを特徴とする金属ストリップの連続熱処理
炉。2. In a continuous heat treatment furnace for a metal strip comprising a heating zone, a soaking zone, a slow cooling zone and a cooling zone, an atmosphere in the furnace taken out of the slow cooling zone by a fan is cooled by a cooler. Third cooling for selectively supplying a purified atmosphere in which the condensed oil in the furnace atmosphere has been removed by an oil removing device to each of the heating zone, the solitary zone, the slow cooling zone, and the cooling zone via a flow control valve. A continuous heat treatment furnace for metal strips, wherein an atmosphere circulation path is provided.
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| JP2000328733A JP4713723B2 (en) | 2000-10-27 | 2000-10-27 | Operation method of continuous heat treatment furnace for metal strip |
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|---|---|---|---|
| JP2000328733A JP4713723B2 (en) | 2000-10-27 | 2000-10-27 | Operation method of continuous heat treatment furnace for metal strip |
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| JP4713723B2 JP4713723B2 (en) | 2011-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108654296A (en) * | 2018-08-01 | 2018-10-16 | 常州市东平钢管有限公司 | Apparatus for treating cooking fume |
| CN108676968A (en) * | 2018-08-17 | 2018-10-19 | 海安金锻工业有限公司 | A kind of metal heat treatment equipment |
| CN117488057A (en) * | 2023-12-28 | 2024-02-02 | 泰州中门子炉业有限公司 | Furnace roller flange correction mechanism of horizontal annealing furnace |
| KR20240020657A (en) | 2022-08-08 | 2024-02-15 | 쥬가이로 고교 가부시키가이샤 | Heat treat furnace |
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| JPH02274821A (en) * | 1989-04-14 | 1990-11-09 | Nkk Corp | Method for feeding atmospheric gas in continuous heat treatment furnace |
| JPH03294433A (en) * | 1990-04-12 | 1991-12-25 | Daido Steel Co Ltd | Method for operating metal strip heat treatment furnace |
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| CN117488057B (en) * | 2023-12-28 | 2024-03-15 | 泰州中门子炉业有限公司 | Furnace roller flange correction mechanism of horizontal annealing furnace |
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|---|---|
| JP4713723B2 (en) | 2011-06-29 |
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