JP7334860B2 - 連続焼鈍炉の露点制御方法、鋼板の連続焼鈍方法、鋼板の製造方法、連続焼鈍炉、連続溶融亜鉛めっき設備及び合金化溶融亜鉛めっき設備 - Google Patents
連続焼鈍炉の露点制御方法、鋼板の連続焼鈍方法、鋼板の製造方法、連続焼鈍炉、連続溶融亜鉛めっき設備及び合金化溶融亜鉛めっき設備 Download PDFInfo
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- 238000000137 annealing Methods 0.000 title claims description 91
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- 239000010959 steel Substances 0.000 title claims description 73
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- 239000004642 Polyimide Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- 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
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- 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
- C21D9/005—Furnaces in which the charge is moving up or down
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C2/04—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
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Coating With Molten Metal (AREA)
Description
連続焼鈍炉において、加湿ガスの炉内への供給を停止して又は減らして、前記連続焼鈍炉の炉内壁に沿って乾燥ガスを供給する。
上記の連続焼鈍炉の露点制御方法を用いて、炉内露点を制御する。
上記の鋼板の連続焼鈍方法を用いて高張力鋼板、溶融亜鉛めっき鋼板又は合金化溶融亜鉛めっき鋼板を製造する。
炉内壁に沿ってガスを供給できるノズルを備え、前記ノズルから供給されるガスは乾燥ガスを含む。
上記の連続焼鈍炉と、前記連続焼鈍炉に続くめっき装置を備える。
上記の連続焼鈍炉と、前記連続焼鈍炉に続くめっき装置及び合金化炉を備える。
連続焼鈍炉にDFF型加熱炉を備える連続溶融亜鉛めっき設備(CGL)において、DFF型加熱炉の加熱用バーナーは4つの群(グループ1~グループ4)に分割された。酸化ゾーンとして、連続焼鈍炉における鋼板移動方向の上流側に3つの群(グループ1~グループ3)の加熱用バーナーが配置された。また、還元ゾーンとして、酸化ゾーンよりも鋼板移動方向の下流側に残りの1つの群(グループ4)の加熱用バーナーが配置された。酸化ゾーン及び還元ゾーンの空気比を個別に制御して試験が行われた。酸化ゾーン及び還元ゾーンのそれぞれの長さは4mである。
10A 予熱帯
10B 直火炉
12 均熱帯
14 急冷帯
16 徐冷帯
18 スナウト
20 連続焼鈍炉
22 めっき装置
23 合金化炉
24 ガス分配装置
26 加湿装置
28 循環恒温水槽
36A~36C 加湿ガス投入口
38A~38C 加湿ガス投入口
40A~40C 加湿ガス投入口
42 常用のガス供給口
42A~42H 常用の乾燥ガス投入口
44A~44G 供給ノズル
46 採取箇所
50A~50E 発熱体
52A~52E 温度計
54A~54E 制御装置
100 連続溶融亜鉛めっき設備
Claims (10)
- スリットノズル又はワイピングノズルを用いて、炉内から炉内壁に噴射される乾燥ガスと前記炉内壁とがなす角度が5°以上かつ45°以下であるように構成される連続焼鈍炉で実行される連続焼鈍炉の露点制御方法であって、
連続焼鈍炉において、加湿ガスの炉内への供給を停止して又は減らして、前記連続焼鈍炉の炉内壁に沿って乾燥ガスを供給する、連続焼鈍炉の露点制御方法。 - 連続焼鈍炉において、前記連続焼鈍炉の炉内壁を炉内雰囲気温度より30℃以上高温にする、請求項1に記載の連続焼鈍炉の露点制御方法。
- 炉内露点を5℃以上の露点から0℃未満の露点に変更する、請求項1又は2に記載の連続焼鈍炉の露点制御方法。
- 前記乾燥ガスの前記炉内壁への衝突風速が0.8m/s以上であるように制御する、請求項1から3のいずれか一項に記載の連続焼鈍炉の露点制御方法。
- 請求項1から4のいずれか一項に記載の連続焼鈍炉の露点制御方法を用いて、炉内露点を制御する、鋼板の連続焼鈍方法。
- 請求項5に記載の鋼板の連続焼鈍方法を用いて高張力鋼板、溶融亜鉛めっき鋼板又は合金化溶融亜鉛めっき鋼板を製造する鋼板の製造方法。
- 炉内壁に沿ってガスを供給できるノズルを備え、前記ノズルから供給されるガスは乾燥ガスを含み、前記ノズルはスリットノズル又はワイピングノズルであって、炉内から前記炉内壁に噴射される乾燥ガスと前記炉内壁とがなす角度が5°以上かつ45°以下であるように構成される、連続焼鈍炉。
- 炉内壁を炉内雰囲気温度より30℃以上高温に加熱できる加熱機構を備える、請求項7に記載の連続焼鈍炉。
- 請求項7又は8に記載の連続焼鈍炉と、前記連続焼鈍炉に続くめっき装置を備える、連続溶融亜鉛めっき設備。
- 請求項7又は8に記載の連続焼鈍炉と、前記連続焼鈍炉に続くめっき装置及び合金化炉を備える、合金化溶融亜鉛めっき設備。
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PCT/JP2022/004973 WO2022234701A1 (ja) | 2021-05-06 | 2022-02-08 | 連続焼鈍炉の露点制御方法、鋼板の連続焼鈍方法、鋼板の製造方法、連続焼鈍炉、連続溶融亜鉛めっき設備及び合金化溶融亜鉛めっき設備 |
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JP2020520408A (ja) | 2017-03-22 | 2020-07-09 | フィブ スタン | 乾式冷却と湿式冷却を組み合わせた、連続的ラインを冷却するためのセクション及び方法 |
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JPS61253327A (ja) * | 1985-04-30 | 1986-11-11 | Sumitomo Metal Ind Ltd | 加熱炉の露点低下方法 |
JPH0762450A (ja) * | 1993-08-27 | 1995-03-07 | Nippon Steel Corp | 連続焼鈍炉における鋼帯エッジ部過加熱防止法 |
JP5500053B2 (ja) | 2010-11-25 | 2014-05-21 | Jfeスチール株式会社 | 連続焼鈍炉の炉内雰囲気調整方法 |
JP6020605B2 (ja) | 2015-01-08 | 2016-11-02 | Jfeスチール株式会社 | 合金化溶融亜鉛めっき鋼板の製造方法 |
US11680303B2 (en) | 2018-03-30 | 2023-06-20 | Nippon Steel Corporation | Steel sheet and manufacturing method therefor |
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