JP2002294347A - Method and device for jet preheating strip continuous annealing facility - Google Patents
Method and device for jet preheating strip continuous annealing facilityInfo
- Publication number
- JP2002294347A JP2002294347A JP2001094134A JP2001094134A JP2002294347A JP 2002294347 A JP2002294347 A JP 2002294347A JP 2001094134 A JP2001094134 A JP 2001094134A JP 2001094134 A JP2001094134 A JP 2001094134A JP 2002294347 A JP2002294347 A JP 2002294347A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- heating furnace
- radiant tube
- jet
- jet preheating
- 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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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Furnace Details (AREA)
Abstract
Description
【発明の属する技術分野】本発明は、連続焼鈍設備のラ
ジアントチューブ式加熱炉のストリップの入側に設けら
れた噴流予熱装置でストリップを予熱する噴流予熱方法
及び噴流予熱装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jet preheating method and a jet preheating apparatus for preheating a strip with a jet preheating device provided on a side of a strip of a radiant tube type heating furnace of a continuous annealing facility.
【従来の技術】ストリップの連続焼鈍にラジアントチュ
ーブ式加熱炉を備えた連続焼鈍設備が知られている。連
続焼鈍設備については、例えば特許第２８５３４９３号
公報、特公昭５８−３１３７０号公報、あるいは特公昭
６１−４０７３０号公報などに記載されている。図３は
従来の連続焼鈍設備の一例を示すものである。噴流予熱
装置２内でラジアントチューブ式加熱炉１のラジアント
チューブ４の燃焼排ガスを排ガス管５で回収して吹き付
け箱１０からストリップ３に吹き付けて予熱し、その
後、ストリップ３をラジアントチューブ式加熱炉１に導
入し加熱する。図４は従来の連続焼鈍設備の他の例を示
すものである。噴流予熱装置２内でラジアントチューブ
式加熱炉１のラジアントチューブ４の燃焼排ガスを排ガ
ス管５で回収し、熱交換器６で燃焼排ガスと熱交換され
た炉内雰囲気ガスを吹き付け箱１０から吹き付けてスト
リップ３を予熱し、その後、ストリップ３をラジアント
チューブ式加熱炉１に導入して加熱する。図３及び図４
に示す噴流予熱装置は、その設置目的が廃熱回収である
ことから、ストリップに吹き付けるガス量は特に制御す
ることなく、燃焼排ガスの熱をできる限り回収するため
に、ストリップに吹き付けるガス量は常に噴流予熱装置
の設備能力をフルに利用し、一定量のガスを吹き付けて
熱回収を行っている。2. Description of the Related Art Continuous annealing equipment provided with a radiant tube heating furnace for continuous annealing of strip is known. The continuous annealing equipment is described in, for example, Japanese Patent No. 2853493, Japanese Patent Publication No. 58-31370, Japanese Patent Publication No. 61-40730, and the like. FIG. 3 shows an example of a conventional continuous annealing facility. In the jet preheating device 2, the flue gas from the radiant tube 4 of the radiant tube type heating furnace 1 is collected by an exhaust gas tube 5, sprayed from a spray box 10 onto the strip 3, and then preheated. And heat it. FIG. 4 shows another example of the conventional continuous annealing equipment. The exhaust gas from the radiant tube 4 of the radiant tube type heating furnace 1 is collected in the exhaust gas pipe 5 in the jet preheating device 2, and the furnace atmosphere gas heat-exchanged with the combustion exhaust gas in the heat exchanger 6 is blown from the spray box 10. The strip 3 is preheated, and then the strip 3 is introduced into the radiant tube heating furnace 1 and heated. 3 and 4
Since the installation purpose of the jet preheating device shown in (2) is to recover waste heat, the amount of gas blown to the strip is always controlled without controlling the amount of gas blown to the strip. Heat recovery is performed by blowing a certain amount of gas, making full use of the equipment capacity of the jet preheating device.
【発明が解決しようとする課題】ラジアントチューブ式
加熱炉の操業は、ストリップの板厚、ライン速度、加熱
炉出口でのストリップの温度などの処理条件の変化に対
応するため、ストリップ位置検出装置、ライン速度制御
装置、板温制御装置を備えた連続焼鈍処理設備制御装置
を設け、加熱炉出側の板温を計測し、この計測値が目標
値と一致するように加熱炉の燃焼量を制御している。し
かしながら、ラジアントチューブ式加熱炉は、ラジアン
トチューブを介してストリップを輻射加熱する方式であ
るため、熱応答性がきわめて遅く、処理条件の変化に早
く追従することができないという欠点がある。そのた
め、板厚、スピード、目標板温度が変化した際には、板
温制御が条件変化に追従できず、実際の板温が目標板温
から外れ、所定の製品品質が得られない領域をカットす
るため、生産歩留まりが下がるという問題があった。そ
こで、本発明は、ラジアントチューブ式加熱炉の廃熱を
有効に利用して、条件変化が発生した場合でも容易に条
件変化に対応でき、生産歩留まりの向上と安定操業を可
能とする噴流予熱方法及び噴流予熱装置を提供するもの
である。The operation of the radiant tube type heating furnace is performed in response to changes in processing conditions such as strip thickness, line speed, and strip temperature at the heating furnace outlet. A continuous annealing treatment equipment control device equipped with a line speed control device and a plate temperature control device is installed to measure the plate temperature on the exit side of the heating furnace and control the combustion amount of the heating furnace so that the measured value matches the target value. are doing. However, the radiant tube heating furnace is a method of radiantly heating the strip through the radiant tube, and therefore has a disadvantage that the thermal response is extremely slow and it is not possible to quickly follow a change in processing conditions. Therefore, when the sheet thickness, speed, and target sheet temperature change, the sheet temperature control cannot follow the change in conditions, and the area where the actual sheet temperature deviates from the target sheet temperature and the predetermined product quality cannot be obtained is cut. Therefore, there is a problem that the production yield is reduced. Accordingly, the present invention provides a jet preheating method that effectively utilizes waste heat of a radiant tube heating furnace, can easily cope with a condition change even when a condition change occurs, enables an improvement in production yield and a stable operation. And a jet preheating device.
【課題を解決するための手段】本発明の噴流予熱方法
は、ラジアントチューブ式加熱炉のストリップ入側に配
置された噴流予熱装置でストリップを噴流予熱するにあ
たり、噴流予熱装置により予熱温度を調整してラジアン
トチューブ式加熱炉の出側のストリップの板温を目標温
度になるように制御することを特徴とする。また、本発
明の噴流予熱装置は、ラジアントチューブ式加熱炉と、
ラジアントチューブ式加熱炉のストリップ入側に配置さ
れた噴流予熱装置と、ラジアントチューブ式加熱炉のラ
ジアントチューブの燃焼排ガスと噴流予熱装置から取り
出された炉内雰囲気ガスを熱交換する熱交換器と、燃焼
排ガスと熱交換された炉内雰囲気ガスを噴流予熱装置と
熱交換器とを循環させる循環ガス配管と、循環ガス配管
から分岐した、ダンパーを備えたバイパス配管と、スト
リップ板厚情報を出力するストリップ位置検出装置、ラ
イン速度情報を出力するライン速度制御装置、加熱炉出
側の板温目標値を出力する板温制御装置を備えた連続焼
鈍処理設備制御装置と、連続焼鈍処理設備制御装置の出
力によりダンパーの開度を制御するダンパー制御装置と
からなることを特徴とする。循環ガス配管に蓄熱式熱交
換器を配置してもよい。According to the jet preheating method of the present invention, when a strip is jet preheated by a jet preheating device arranged on the strip entrance side of a radiant tube type heating furnace, the preheating temperature is adjusted by the jet preheating device. And controlling the plate temperature of the strip on the outlet side of the radiant tube heating furnace to the target temperature. Further, the jet preheating device of the present invention, a radiant tube heating furnace,
A jet preheating device arranged on the strip entry side of the radiant tube type heating furnace, and a heat exchanger for heat exchange between the combustion exhaust gas of the radiant tube of the radiant tube type heating furnace and the furnace gas removed from the jet preheating device, A circulating gas pipe for circulating the furnace atmosphere gas that has undergone heat exchange with the combustion exhaust gas through a jet preheating device and a heat exchanger, a bypass pipe branched from the circulating gas pipe and provided with a damper, and outputs strip thickness information. A continuous annealing treatment equipment control device including a strip position detecting device, a line speed control device for outputting line speed information, a sheet temperature control device for outputting a sheet temperature target value on the exit side of the heating furnace, and a continuous annealing treatment equipment control device And a damper control device for controlling an opening degree of the damper by an output. A regenerative heat exchanger may be arranged in the circulation gas pipe.
【発明の実施の形態】本発明においては、ラジアントチ
ューブの燃焼量を調整することなく、噴流予熱装置によ
り予熱温度を調整してラジアントチューブ式加熱炉のス
トリップの出側の温度を目標温度になるように制御す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the preheating temperature is adjusted by a jet preheating device without adjusting the combustion amount of a radiant tube, and the temperature at the outlet side of the strip of the radiant tube heating furnace reaches the target temperature. Control.
【実施例】図１は本発明の噴流予熱方法を実施するため
の実施例の概略図である。ラジアントチューブ式加熱炉
１のストリップ入側には噴流予熱装置２が併設され、ス
トリップ３は噴流予熱装置２で予熱され、ラジアントチ
ューブ式加熱炉１に導入して加熱される。ラジアントチ
ューブ４の燃焼排ガスは排ガス配管５で回収されて熱交
換器６に送られ、排気用送風機７で排出される。熱交換
器６では、噴流予熱装置２から取り出された炉内雰囲気
ガスが燃焼排ガスと熱交換される。熱交換器６で燃焼排
ガスと熱交換された炉内雰囲気ガスは、循環ガス用送風
機８により循環ガス配管９を通って噴流予熱装置２の吹
き付け箱１０に送られ、吹き付け箱１０から吹き付けて
ストリップ３を予熱する。循環ガス配管９にはバイパス
配管１１が設けられ、バイパス配管１１に設けられたダ
ンパー１２はダンパー制御装置１３により開閉が制御さ
れる。連続焼鈍処理設備を制御するため、ストリップ位
置検出装置１４、ライン速度制御装置１５、板温制御装
置１６を備えた連続焼鈍処理設備制御装置１７が設けら
れ、加熱炉出側には板温計１８が設けられ、計測した板
温は、連続焼鈍処理設備制御装置１７に入力される。ス
トリップ位置検出装置１４からはストリップ板厚情報が
出力され、ライン速度制御装置１５からはライン速度情
報が出力され、板温制御装置１６からは加熱炉出側の板
温目標値が出力され、これらの出力はダンパー制御装置
１３に入力される。図２は本発明の噴流予熱方法を実施
するための別実施例の概略図である。図１と同一構成に
は同一符号を付しその説明は省略する。本実施例は循環
ガス配管９に蓄熱式熱交換器１９を配置したもので、循
環ガスで蓄熱して熱エネルギーを有効利用するものであ
る。次に本発明の噴流予熱方法の制御について説明す
る。 （１）板厚が薄手から厚手に変更された場合 薄手のストリップを噴流予熱装置で予熱している時はダ
ンパーを開いて循環ガスの一部をバイパス配管に流し、
噴流予熱装置に循環させる循環ガス量を少なくして加熱
量を下げた状態で薄手のストリップを目標温度まで予熱
している。薄手のストリップから厚手のストリップに変
更されると、加熱量を増やす必要があるので、ダンパ制
御装置に基づきダンパーの開度を調整してバイパス配管
に流す量を減少、あるいはなくして循環ガス量を増加さ
せて厚手のストリップを加熱炉出側板温が目標温度にな
るように予熱する。 （２）板厚が厚手から薄手に変更された場合 厚手のストリップを噴流予熱装置で予熱している時は、
ダンパーの開度を調整してバイパス配管に流す量を減
少、あるいはなくして循環ガス量を増加させて厚手のス
トリップを目標温度まで予熱している。厚手のストリッ
プから薄手のストリップに変更されると、加熱量を減少
させる必要があるので、ダンパ制御装置に基づきダンパ
ーの開度を調整してバイパス配管に流す量を増加させて
循環ガス量を減少させて薄手のストリップを加熱炉出側
板温が目標温度になるように予熱する。FIG. 1 is a schematic view showing an embodiment for carrying out a jet preheating method according to the present invention. A jet preheating device 2 is provided alongside the strip entrance of the radiant tube heating furnace 1, and the strip 3 is preheated by the jet preheating device 2 and introduced into the radiant tube heating furnace 1 to be heated. The exhaust gas from the radiant tube 4 is collected by an exhaust gas pipe 5, sent to a heat exchanger 6, and discharged by an exhaust blower 7. In the heat exchanger 6, the in-furnace atmosphere gas taken out from the jet preheating device 2 exchanges heat with the combustion exhaust gas. The furnace atmosphere gas heat-exchanged with the combustion exhaust gas in the heat exchanger 6 is sent to the spray box 10 of the jet preheating device 2 through the circulation gas pipe 9 by the circulation gas blower 8 and sprayed from the spray box 10 to strip. Preheat 3 A bypass pipe 11 is provided in the circulation gas pipe 9, and the opening and closing of a damper 12 provided in the bypass pipe 11 is controlled by a damper control device 13. In order to control the continuous annealing equipment, a continuous annealing equipment control device 17 including a strip position detecting device 14, a line speed control device 15, and a sheet temperature control device 16 is provided. Is provided, and the measured sheet temperature is input to the continuous annealing processing equipment control device 17. Strip thickness information is output from the strip position detector 14, line speed information is output from the line speed controller 15, and a sheet temperature target value on the exit side of the heating furnace is output from the sheet temperature controller 16; Is input to the damper control device 13. FIG. 2 is a schematic view of another embodiment for carrying out the jet preheating method of the present invention. The same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, a regenerative heat exchanger 19 is arranged in the circulating gas pipe 9, and heat is stored in the circulating gas to effectively use thermal energy. Next, control of the jet preheating method of the present invention will be described. (1) When the plate thickness is changed from thin to thick When the thin strip is being preheated by the jet preheating device, the damper is opened and a part of the circulating gas is passed through the bypass pipe.
The thin strip is preheated to the target temperature with the amount of circulating gas circulated through the jet preheating device reduced and the amount of heating reduced. When changing from a thin strip to a thick strip, it is necessary to increase the amount of heating. The thick strip is preheated so that the sheet temperature on the exit side of the heating furnace reaches the target temperature. (2) When the thickness is changed from thick to thin When the thick strip is preheated by the jet preheating device,
The thickness of the thick strip is preheated to the target temperature by adjusting the opening degree of the damper to reduce or eliminate the amount of gas flowing through the bypass pipe and increasing the amount of circulating gas. When changing from a thick strip to a thin strip, it is necessary to reduce the amount of heating. Then, the thin strip is preheated so that the sheet temperature on the exit side of the heating furnace becomes the target temperature.
【発明の効果】本発明においては、ラジアントチューブ
の燃焼量を調整することなく、噴流予熱装置により予熱
温度を調整してラジアントチューブ式加熱炉のストリッ
プ出側の温度を目標温度になるように制御するので、従
来の追従性の遅いラジアントチューブの燃焼量による制
御に比べて、板厚が変わっても制御が簡単で早く目標板
温にすることができる。また、循環ガス配管に蓄熱式熱
交換器を配置して、循環ガスで蓄熱して熱エネルギーを
有効利用することがである。In the present invention, the preheating temperature is adjusted by the jet preheating device without adjusting the combustion amount of the radiant tube, and the temperature at the strip outlet side of the radiant tube type heating furnace is controlled to the target temperature. Therefore, compared with the conventional control based on the combustion amount of the radiant tube having a slow follow-up property, even if the plate thickness changes, the control can be easily and quickly performed to reach the target plate temperature. Further, a regenerative heat exchanger may be arranged in the circulating gas pipe to store heat with the circulating gas to effectively utilize heat energy.
【図１】本発明の噴流予熱方法を実施するための実施例
の概略図である。FIG. 1 is a schematic view of an embodiment for carrying out a jet preheating method of the present invention.
【図２】本発明の噴流予熱方法を実施するための別実施
例の概略図である。FIG. 2 is a schematic view of another embodiment for carrying out the jet preheating method of the present invention.
【図３】従来の連続焼鈍設備の一例を示すものである。FIG. 3 shows an example of a conventional continuous annealing facility.
【図４】従来の連続焼鈍設備の他の例を示すものであ
る。FIG. 4 shows another example of the conventional continuous annealing equipment.
１：ラジアントチューブ式加熱炉 ２：噴流予熱装置 ３：ストリップ ４：ラジアントチューブ ５：排ガス配管 ６：熱交換器 ７：排気用送風機 ８：循環ガス用送風機 ９：循環ガス配管 １０：吹き付け箱 １１：バイパス配管 １２：ダンパー １３：ダンパー制御装置 １４：ストリップ位置検出装置 １５：ライン速度制御装置 １６：板温制御装置 １７：連続焼鈍処理設備制御装置 １８：板温計 １９：蓄熱式熱交換器 1: radiant tube type heating furnace 2: jet preheating device 3: strip 4: radiant tube 5: exhaust gas piping 6: heat exchanger 7: exhaust blower 8: circulating gas blower 9: circulating gas piping 10: spray box 11: Bypass piping 12: Damper 13: Damper control device 14: Strip position detection device 15: Line speed control device 16: Sheet temperature control device 17: Continuous annealing treatment equipment control device 18: Sheet temperature gauge 19: Regenerative heat exchanger
フロントページの続き Ｆターム(参考） 4K043 AA01 CA02 DA05 EA06 EA07 FA03 FA07 FA12 GA04 GA05 4K063 AA05 AA13 AA15 BA02 BA16 CA01 CA03 GA02 GA09 GA11 GA39 Continued on the front page F term (reference) 4K043 AA01 CA02 DA05 EA06 EA07 FA03 FA07 FA12 GA04 GA05 4K063 AA05 AA13 AA15 BA02 BA16 CA01 CA03 GA02 GA09 GA11 GA39
Claims (3)
プ入側に配置された噴流予熱装置でストリップを噴流予
熱するにあたり、噴流予熱装置により予熱温度を調整し
てラジアントチューブ式加熱炉の出側のストリップの板
温を目標温度になるように制御することを特徴とする連
続焼鈍設備のストリップの噴流予熱方法。When a strip is jet-preheated by a jet preheating device disposed on a strip entrance side of a radiant tube type heating furnace, a preheating temperature is adjusted by a jet preheating device so that the strip on the exit side of the radiant tube type heating furnace is adjusted. A jet preheating method for a strip in a continuous annealing facility, wherein a sheet temperature is controlled to a target temperature.
れた噴流予熱装置と、 ラジアントチューブ式加熱炉のラジアントチューブの燃
焼排ガスと噴流予熱装置から取り出された炉内雰囲気ガ
スを熱交換する熱交換器と、 燃焼排ガスと熱交換された炉内雰囲気ガスを噴流予熱装
置と熱交換器とを循環させる循環ガス配管と、 循環ガス配管から分岐した、ダンパーを備えたバイパス
配管と、 ストリップ板厚情報を出力するストリップ位置検出装
置、ライン速度情報を出力するライン速度制御装置、加
熱炉出側の板温目標値を出力する板温制御装置を備えた
連続焼鈍処理設備制御装置と、 連続焼鈍処理設備制御装置の出力によりダンパーの開度
を制御するダンパー制御装置とからなることを特徴とす
る連続焼鈍設備のストリップの噴流予熱装置。2. A radiant tube heating furnace, a jet preheating device arranged on the strip entrance side of the radiant tube heating furnace, and a furnace exhaust gas from the radiant tube heating furnace of the radiant tube heating furnace and a furnace taken out from the jet preheating device. It has a heat exchanger for exchanging internal atmosphere gas with heat, a circulating gas pipe for circulating furnace atmosphere gas that has been heat-exchanged with flue gas to a jet preheating device and a heat exchanger, and a damper branched from the circulating gas pipe. Continuous annealing process equipped with a bypass pipe, a strip position detector that outputs strip thickness information, a line speed controller that outputs line speed information, and a sheet temperature controller that outputs a target temperature of the heating furnace exit side It is characterized by comprising an equipment control device and a damper control device that controls the degree of opening of the damper by the output of the continuous annealing equipment control device. Continuous annealing equipment strip jet preheating device.
たことを特徴とする請求項２記載の連続焼鈍設備のスト
リップの噴流予熱装置。3. A jet preheating apparatus for a strip of continuous annealing equipment according to claim 2, wherein a regenerative heat exchanger is disposed in the circulation gas pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001094134A JP2002294347A (en) | 2001-03-28 | 2001-03-28 | Method and device for jet preheating strip continuous annealing facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001094134A JP2002294347A (en) | 2001-03-28 | 2001-03-28 | Method and device for jet preheating strip continuous annealing facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2916764A1 (en) * | 2007-05-30 | 2008-12-05 | Gaz De France Sa | METHOD AND INSTALLATION FOR HEATING A METAL STRIP, ESPECIALLY FOR A COOLING |
| KR20160125517A (en) | 2014-07-30 | 2016-10-31 | 쥬가이로 고교 가부시키가이샤 | Method for controlling combustion in continuous heat treating furnace and method for modifying continuous heat treating furnace |
| AT517848A4 (en) * | 2016-04-15 | 2017-05-15 | Andritz Tech And Asset Man Gmbh | METHOD AND OVEN SYSTEM FOR HEAT-TREATING METAL TAPES |
| CN108148999A (en) * | 2016-12-02 | 2018-06-12 | 宝山钢铁股份有限公司 | A kind of pre-heating system and its pre-heating mean suitable for continuous annealing and galvanizing |
| CN108149000A (en) * | 2016-12-02 | 2018-06-12 | 宝山钢铁股份有限公司 | A kind of energy-saving continuous heat system and its heat treatment method |
| CN108149002A (en) * | 2016-12-02 | 2018-06-12 | 宝山钢铁股份有限公司 | A kind of continuous annealing preheating and residual neat recovering system and its flexible control method |
| CN108149001A (en) * | 2016-12-02 | 2018-06-12 | 宝山钢铁股份有限公司 | A kind of jet heating system and its control method |
| CN108728629A (en) * | 2017-04-24 | 2018-11-02 | 宝山钢铁股份有限公司 | A kind of energy-saving straight fire heating apparatus for continuous heat treatment |
| CN114438511A (en) * | 2022-02-15 | 2022-05-06 | 宝钢湛江钢铁有限公司 | Method for preventing carbon deposition in hearth of preheating furnace heated by radiant tube from falling off |
| WO2024056070A1 (en) * | 2022-09-15 | 2024-03-21 | 宝山钢铁股份有限公司 | Injection radiant tube preheating system |
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2001
- 2001-03-28 JP JP2001094134A patent/JP2002294347A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2916764A1 (en) * | 2007-05-30 | 2008-12-05 | Gaz De France Sa | METHOD AND INSTALLATION FOR HEATING A METAL STRIP, ESPECIALLY FOR A COOLING |
| WO2008152275A2 (en) * | 2007-05-30 | 2008-12-18 | Gaz De France | Method and equipment for heating a metal strip, in particular for annealing |
| WO2008152275A3 (en) * | 2007-05-30 | 2009-02-12 | Gaz De France | Method and equipment for heating a metal strip, in particular for annealing |
| RU2477325C2 (en) * | 2007-05-30 | 2013-03-10 | Гдф Суэц | Heating method and plant of metal strip, namely for purpose of annealing |
| KR20160125517A (en) | 2014-07-30 | 2016-10-31 | 쥬가이로 고교 가부시키가이샤 | Method for controlling combustion in continuous heat treating furnace and method for modifying continuous heat treating furnace |
| AT517848A4 (en) * | 2016-04-15 | 2017-05-15 | Andritz Tech And Asset Man Gmbh | METHOD AND OVEN SYSTEM FOR HEAT-TREATING METAL TAPES |
| AT517848B1 (en) * | 2016-04-15 | 2017-05-15 | Andritz Tech And Asset Man Gmbh | METHOD AND OVEN SYSTEM FOR HEAT-TREATING METAL TAPES |
| CN108148999A (en) * | 2016-12-02 | 2018-06-12 | 宝山钢铁股份有限公司 | A kind of pre-heating system and its pre-heating mean suitable for continuous annealing and galvanizing |
| CN108149000A (en) * | 2016-12-02 | 2018-06-12 | 宝山钢铁股份有限公司 | A kind of energy-saving continuous heat system and its heat treatment method |
| CN108149002A (en) * | 2016-12-02 | 2018-06-12 | 宝山钢铁股份有限公司 | A kind of continuous annealing preheating and residual neat recovering system and its flexible control method |
| CN108149001A (en) * | 2016-12-02 | 2018-06-12 | 宝山钢铁股份有限公司 | A kind of jet heating system and its control method |
| CN108728629A (en) * | 2017-04-24 | 2018-11-02 | 宝山钢铁股份有限公司 | A kind of energy-saving straight fire heating apparatus for continuous heat treatment |
| CN114438511A (en) * | 2022-02-15 | 2022-05-06 | 宝钢湛江钢铁有限公司 | Method for preventing carbon deposition in hearth of preheating furnace heated by radiant tube from falling off |
| WO2024056070A1 (en) * | 2022-09-15 | 2024-03-21 | 宝山钢铁股份有限公司 | Injection radiant tube preheating system |
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