JP5505430B2 - 鋼帯の連続焼鈍炉及び連続焼鈍方法 - Google Patents
鋼帯の連続焼鈍炉及び連続焼鈍方法 Download PDFInfo
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- 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
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- 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
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- C21D1/26—Methods of annealing
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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- C23C2/0224—Two or more thermal pretreatments
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- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/50—Controlling or regulating the coating processes
- C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
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- 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
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Description
ここで、加熱帯のガス吐出口の吐出幅W0は、加熱帯の最も入側に配置されたガス吐出口と、最も出側に配置されたガス吐出口の炉長方向の間隔である。
加熱帯と均熱帯間の隔壁の有無に関わらず、炉内状況(例えばRTや炉体シール部の破れ状況)によって炉内の露点分布は大きく異なることになるが、隔壁がある場合は、炉内のガス流れが隔壁により限定されるため、露点を効率よく低下させるのに必要なリファイナから戻るガスの吐出口、リファイナへのガスの吸引口の配置場所を規定しやすい。一方、隔壁が無い場合は、炉内のガス流れが複雑になるため、露点状況に応じてリファイナの吸引口・吐出口を変更する必要がある。特に吸引口は露点の高い場所に配置しないと、炉内の水分を効率よく除去することができず、所望の露点まで到達させることができなかったり、炉設備が長大になったりする。ガスの吸引口を複数箇所に設置することで、露点の高い場所のガスを効率よく吸引できるようになり、炉設備を長大化させずに、所望の露点まで到達させることができるようになる。
板厚0.8〜1.2mm、板巾950〜1000mmの範囲の鋼帯を用い、焼鈍温度800℃、通板速度100〜120mpmで出来る限り条件を統一した試験を行った。鋼帯の合金成分を表1に示す。
2 焼鈍炉
3 加熱帯
4 均熱帯
5 冷却帯
5a 第1冷却帯
5b 第2冷却帯
6 スナウト
7 めっき浴
8 ガスワイピングノズル
9 加熱装置
10 リファイナ
11a 上部ハースロール
11b 下部ハースロール
12 シールロール
13 連結部
14 スロート
15 雰囲気ガス供給系統
16 ガス導入管
17 ガス導出管
22a〜22e ガスの吸引口
23a〜23e ガスの吐出口
24、25 露点検出部
30 熱交換器
31 クーラ
32 フィルタ
33 ブロワ
34 脱酸素装置
35、36 除湿装置
46、51 切替弁
40〜45、47〜50、52、53 弁
Claims (8)
- 鋼帯を上下方向に搬送する加熱帯、均熱帯及び冷却帯がこの順に配置され、前記均熱帯と前記冷却帯の連結部は炉上部に配置され、前記加熱帯と前記均熱帯間は無隔壁であり、炉外より雰囲気ガスを炉内に供給し、炉内ガスを加熱帯下部の鋼帯導入部から排出するとともに、炉内ガスの一部を吸引して炉外に設けた脱酸素装置と除湿装置を有するリファイナに導入してガス中の酸素と水分を除去して露点を低下し、露点を低下したガスを炉内に戻すように構成された縦型焼鈍炉であって、リファイナへのガス吸引口を、均熱帯と冷却帯の連結部下部、及び、前記加熱帯下部の鋼帯導入部から鉛直方向距離が6m以下でかつ炉長方向距離が3m以下である領域を除く加熱帯及び/または均熱帯に配置し、リファイナから炉内へのガス吐出口を、均熱帯と冷却帯の連結部のパスラインより高い領域、及び、加熱帯の上部ハースロール中心の鉛直位置-2mより高い領域に配置することを特徴とする鋼帯の連続焼鈍炉。
- 加熱帯のガス吐出口の吐出幅W0は、加熱帯および均熱帯の炉幅Wに対して、W0/W>1/4を満足することを特徴とする請求項1に記載の鋼帯の連続焼鈍炉。
ここで、加熱帯のガス吐出口の吐出幅W0は、加熱帯の最も入側に配置されたガス吐出口と、最も出側に配置されたガス吐出口の炉長方向の間隔である。 - 前記均熱帯と冷却帯の連結部のガス吸引口は、均熱帯と冷却帯の連結部下部のガス流路が狭くなったところに配置することを特徴とする請求項1または2に記載の鋼帯の連続焼鈍炉。
- ガス吸引口を加熱帯及び/または均熱帯の複数箇所に配置し、当該複数箇所に配置したガス吸引口近傍に炉内ガスの露点を測定する露点計の露点検出部を設置したことを特徴とする請求項1〜3のいずれかに記載の鋼帯の連続焼鈍炉。
- 前記冷却帯は、鋼帯を搬送するパスは1パスからなることを特徴とする請求項1〜4のいずれかに記載の鋼帯の連続焼鈍炉。
- 焼鈍炉の下流に溶融亜鉛めっき設備を備えることを特徴とする請求項1〜5のいずれかに記載の鋼帯の連続焼鈍炉。
- 溶融亜鉛めっき設備は、さらに亜鉛めっきの合金化処理装置を備えることを特徴とする請求項6に記載の鋼帯の連続焼鈍炉。
- 請求項4に記載の鋼帯の連続焼鈍炉を用いて鋼帯を連続焼鈍する際に、加熱帯及び/または均熱帯に配置した露点計で炉内ガスの露点を測定し、露点が高い箇所に配置されたガス吸引口から炉内ガスを優先して吸引することを特徴とする鋼帯の連続焼鈍方法。
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012006994A JP5505430B2 (ja) | 2012-01-17 | 2012-01-17 | 鋼帯の連続焼鈍炉及び連続焼鈍方法 |
| PCT/JP2013/000192 WO2013108624A1 (ja) | 2012-01-17 | 2013-01-17 | 鋼帯の連続焼鈍炉及び連続焼鈍方法 |
| TW102101790A TWI488975B (zh) | 2012-01-17 | 2013-01-17 | 鋼帶之連續退火爐以及連續退火方法 |
| US14/372,649 US9702020B2 (en) | 2012-01-17 | 2013-01-17 | Continuous annealing furnace and continuous annealing method for steel strips |
| CN201380005671.0A CN104053796B (zh) | 2012-01-17 | 2013-01-17 | 钢带的连续退火炉及连续退火方法 |
| CN201610086015.3A CN105671301B (zh) | 2012-01-17 | 2013-01-17 | 钢带的连续退火炉及连续退火方法 |
| KR1020147021987A KR101644730B1 (ko) | 2012-01-17 | 2013-01-17 | 강대의 연속 어닐링로 및 연속 어닐링 방법 |
| EP13738991.2A EP2806043B1 (en) | 2012-01-17 | 2013-01-17 | Continuous annealing furnace and continuous annealing method for steel strips |
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| JP2012006994A JP5505430B2 (ja) | 2012-01-17 | 2012-01-17 | 鋼帯の連続焼鈍炉及び連続焼鈍方法 |
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| JP2013147681A JP2013147681A (ja) | 2013-08-01 |
| JP2013147681A5 JP2013147681A5 (ja) | 2013-10-17 |
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| US (1) | US9702020B2 (ja) |
| EP (1) | EP2806043B1 (ja) |
| JP (1) | JP5505430B2 (ja) |
| KR (1) | KR101644730B1 (ja) |
| CN (2) | CN104053796B (ja) |
| TW (1) | TWI488975B (ja) |
| WO (1) | WO2013108624A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5982905B2 (ja) | 2012-03-19 | 2016-08-31 | Jfeスチール株式会社 | 高強度溶融亜鉛めっき鋼板の製造方法 |
| CN104204240B (zh) * | 2012-04-06 | 2017-03-08 | 杰富意钢铁株式会社 | 连续式熔融镀锌设备 |
| EP2927342A4 (en) * | 2012-12-04 | 2016-01-06 | Jfe Steel Corp | APPARATUS AND METHOD FOR PRODUCING A CONTINUOUS FIRE-PLATED STEEL PLATE |
| WO2014136412A1 (ja) | 2013-03-04 | 2014-09-12 | Jfeスチール株式会社 | 高強度鋼板及びその製造方法並びに高強度溶融亜鉛めっき鋼板及びその製造方法 |
| JP5790898B1 (ja) * | 2013-11-07 | 2015-10-07 | Jfeスチール株式会社 | 連続焼鈍設備および連続焼鈍方法 |
| CN103555925B (zh) * | 2013-11-08 | 2015-04-22 | 中冶南方(武汉)威仕工业炉有限公司 | 一种用于钛板及钢带退火的立式连续退火炉 |
| FR3014447B1 (fr) * | 2013-12-05 | 2016-02-05 | Fives Stein | Procede et installation de traitement thermique en continu d'une bande d'acier |
| JP5884196B2 (ja) * | 2014-02-18 | 2016-03-15 | Jfeスチール株式会社 | 高強度溶融亜鉛めっき鋼板の製造方法 |
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| CA2625790C (en) * | 2005-10-14 | 2010-10-12 | Nippon Steel Corporation | Continuous annealing and hot dip plating method and continuous annealing and hot dip plating system of steel sheet containing si |
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| JP5884748B2 (ja) * | 2013-02-25 | 2016-03-15 | Jfeスチール株式会社 | 鋼帯の連続焼鈍装置および連続溶融亜鉛めっき装置 |
| JP5565485B1 (ja) * | 2013-02-25 | 2014-08-06 | Jfeスチール株式会社 | 鋼帯の連続焼鈍装置および連続溶融亜鉛めっき装置 |
| JP5790898B1 (ja) * | 2013-11-07 | 2015-10-07 | Jfeスチール株式会社 | 連続焼鈍設備および連続焼鈍方法 |
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| WO2013108624A1 (ja) | 2013-07-25 |
| US9702020B2 (en) | 2017-07-11 |
| TWI488975B (zh) | 2015-06-21 |
| JP2013147681A (ja) | 2013-08-01 |
| EP2806043A1 (en) | 2014-11-26 |
| KR101644730B1 (ko) | 2016-08-01 |
| TW201339318A (zh) | 2013-10-01 |
| CN105671301A (zh) | 2016-06-15 |
| EP2806043A4 (en) | 2015-06-10 |
| CN104053796A (zh) | 2014-09-17 |
| US20150013851A1 (en) | 2015-01-15 |
| CN104053796B (zh) | 2016-03-16 |
| KR20140119104A (ko) | 2014-10-08 |
| CN105671301B (zh) | 2018-01-09 |
| EP2806043B1 (en) | 2018-07-18 |
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