JP7422822B2 - 連続的なラインの冷却セクションを移動する鋼ストリップの冷却方法及び装置 - Google Patents
連続的なラインの冷却セクションを移動する鋼ストリップの冷却方法及び装置 Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims description 49
- 229910000831 Steel Inorganic materials 0.000 title claims description 43
- 239000010959 steel Substances 0.000 title claims description 43
- 238000000034 method Methods 0.000 title claims description 17
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 129
- 239000000243 solution Substances 0.000 claims description 104
- 235000019253 formic acid Nutrition 0.000 claims description 66
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 62
- 239000007788 liquid Substances 0.000 claims description 40
- 238000002347 injection Methods 0.000 claims description 36
- 239000007924 injection Substances 0.000 claims description 36
- 239000007789 gas Substances 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 239000006193 liquid solution Substances 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 13
- 238000005275 alloying Methods 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000011282 treatment Methods 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 150000004679 hydroxides Chemical class 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 239000003380 propellant Substances 0.000 claims 2
- 239000007921 spray Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 229920006395 saturated elastomer Polymers 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- MSNWSDPPULHLDL-UHFFFAOYSA-K ferric hydroxide Chemical compound [OH-].[OH-].[OH-].[Fe+3] MSNWSDPPULHLDL-UHFFFAOYSA-K 0.000 description 7
- 238000005246 galvanizing Methods 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000002923 metal particle Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000006114 decarboxylation reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000006392 deoxygenation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000013461 intermediate chemical Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 102100031765 3-beta-hydroxysteroid-Delta(8),Delta(7)-isomerase Human genes 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 101000866618 Homo sapiens 3-beta-hydroxysteroid-Delta(8),Delta(7)-isomerase Proteins 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- WHRBSMVATPCWLU-UHFFFAOYSA-K iron(3+);triformate Chemical compound [Fe+3].[O-]C=O.[O-]C=O.[O-]C=O WHRBSMVATPCWLU-UHFFFAOYSA-K 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000010891 toxic waste Substances 0.000 description 1
Images
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- 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
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- 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
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- 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
- 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
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
- C23G3/028—Associated apparatus, e.g. for pretreating or after-treating for thermal or mechanical pretreatment
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- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Coating With Molten Metal (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
ストリップの他の化学的処理はそれが冷却された後は必要ないということを意味する。またそれは、急速冷却後にストリップを水で洗うことを必要としない。1回の乾燥処理だけを行いうる。それゆえ、亜鉛めっきラインに特に有利である。なぜなら、簡単な乾燥処理が続く湿式冷却の後すぐに、ストリップを亜鉛浴に浸すことができるからである。
- 溶液の熱分解
- ストリップと溶液の間で、及びストリップと熱分解の生成物の間での化学反応
HCOOH→H2O+CO
HCOOH→H2+CO2
噴射された溶液のごく小さな割合が、その鋼ストリップとの熱化学反応及び熱分解によって変化する。ひどく高い消費や生産コストを発生させないように、この溶液の主要部分を再使用、それどころか再生利用することが重要である。有利には、該溶液の少なくとも50%が再生利用される。さらに有利には、前記溶液の少なくとも60%、有利には少なくとも70%、有利には少なくとも80%、有利には少なくとも90%が再生利用される。より有利な構成では、前記溶液の少なくとも91%、有利には少なくとも92%、有利には少なくとも93%、有利には少なくとも94%、有利には少なくとも95%、有利には少なくとも96%、有利には少なくとも97%、有利には少なくとも98%、有利には少なくとも99%が再生利用される。さらに有利な構成では、前記溶液の100%が再生利用される。
2CH2O2+FeO→(CHO2)2Fe+H2O
2(CHO2)2Fe+H2O2+2CH2O2→2(CHO2)3Fe+2H2O
(CHO2)3Fe+3H2O→3CH2O2+Fe(OH)3
ストリップの移動方向において、液体ナイフのセット5の後には、ストリップから残りの液体を除去するためのガスナイフのセット6が置かれている。その後、ストリップは、ノズル3と液体ナイフのセット5により噴射される冷却液を収集する回収タンク7を通過する。このタンクでは、ガスナイフの第2のセット8は、ストリップからあらゆる残りの液体を除去するように設計されている。次いで、ストリップは、ストリップ上の全ての液体の跡を加熱チューブ10が除去するエリア9を通過する。このエリア9を通過すると、ストリップは、湿式エリア2、7、9とストリップの移動方向において下流にあるエリア12との間にある雰囲気シーリング装置11を通過する。この雰囲気シーリング装置では、ガス注入及び/又は吸引は、該シーリング装置の上流及び下流のセクションの間の雰囲気分離を向上させることを可能にする。
Claims (8)
- 連続的なラインの冷却セクション(2)を通って進む鋼ストリップ(1)の冷却方法であって、前記鋼ストリップへの水性噴射溶液の噴射を含み、前記水性噴射溶液は、液体溶液又は液体溶液とガスの混合物であり、前記液体溶液は、0.1質量%~6質量%のギ酸濃度を有し、
前記水性噴射溶液は、噴霧によって前記鋼ストリップに噴射され、
さらに前記冷却方法は、噴射ユニット(13)に収容され、また、噴射される前記水性噴射溶液の連続的又は周期的なチェックも含み、
該チェックは、前記水性噴射溶液の少なくとも1つの物理化学的データを、pH、密度及びギ酸濃度、又は、これらの物理化学的データの組み合わせを含む群から測定することを含み、この測定が所定の許容範囲に入らない場合、所定の量の前記噴射される溶液を前記噴射ユニット(13)から取り除き、同じ所定の量のギ酸溶液を前記噴射ユニット(13)に注入し、前記所定の量のギ酸溶液は、注入後の、噴射される前記液体溶液が、0.1質量%~6質量%のギ酸濃度であるようにギ酸の濃度を有する、冷却方法。 - 前記液体溶液は、0.5質量%~2質量%のギ酸濃度を有する、請求項1に記載の冷却方法。
- 前記注入後の、噴射される前記液体溶液は、0.5質量%~2質量%のギ酸濃度を有する、請求項1又は2に記載の冷却方法。
- 取り除かれる前記溶液は、過酸化水素水を用いて酸化による処理を受け、次に、鉄(III)及び他の合金元素の水酸化物を抽出するようにろ過され、注入される前記溶液は、前記ろ過された溶液の再循環又は新たな溶液に由来する、請求項1~3のいずれか1項に記載の冷却方法。
- 噴射ユニット(13)から取り除かれる前記溶液は、噴射される前に脱酸素処理を受ける、請求項1~4のいずれか1項に記載の冷却方法。
- 前記鋼ストリップに噴射される前記溶液の噴射から生じる蒸気を収集すること、該収集された蒸気を液体に凝縮させること、及び、該凝縮された液体を、前記噴射ユニット(13)に送るために、前記噴射される溶液が取り出される流体循環路に注入することも含む、請求項1~5のいずれか1項に記載の冷却方法。
- 連続的なラインの冷却セクション(2)を通って進む鋼ストリップ(1)を冷却するように構成されている冷却装置であって、請求項1~6のいずれか1項に記載の冷却方法を、前記鋼ストリップへの水性噴射溶液の噴射により行うように構成されている要素を備え、
前記水性溶液は、液体溶液又は液体溶液とガスの混合物であり、前記液体溶液は、0.1質量%~6質量%のギ酸濃度を有し、
前記溶液は、噴霧によって前記鋼ストリップに噴射され、
さらに前記冷却装置は前記液体溶液を脱酸素化するように構成されているメンブレン(4)のシステムを含む、冷却装置。 - 該メンブレンは、一方の側は窒素で掃引され、他方の側は真空抽出で掃引される、請求項7に記載の冷却装置。
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FR3104178B1 (fr) | 2019-12-09 | 2022-12-02 | Fives Stein | Dispositif et procede de traitement thermique des aciers comprenant un refroidissement humide |
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