JP7488351B2 - 高強度冷間圧延合金化溶融亜鉛めっき鋼板及びその製造方法 - Google Patents
高強度冷間圧延合金化溶融亜鉛めっき鋼板及びその製造方法 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims description 78
- 239000010959 steel Substances 0.000 title claims description 78
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229910001563 bainite Inorganic materials 0.000 claims description 19
- 229910000859 α-Fe Inorganic materials 0.000 claims description 19
- 229910000734 martensite Inorganic materials 0.000 claims description 17
- 238000000137 annealing Methods 0.000 claims description 15
- 229910001566 austenite Inorganic materials 0.000 claims description 15
- 238000002791 soaking Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000010960 cold rolled steel Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000005244 galvannealing Methods 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000011265 semifinished product Substances 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 238000005097 cold rolling Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 238000005554 pickling Methods 0.000 claims 2
- 238000003303 reheating Methods 0.000 claims 2
- 238000005266 casting Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 229910052750 molybdenum Inorganic materials 0.000 description 6
- 239000011733 molybdenum Substances 0.000 description 6
- 238000005246 galvanizing Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 238000007792 addition Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007571 dilatometry Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- 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
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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
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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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
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
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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
- 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
- C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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- 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
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- 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
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- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
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- Coating With Molten Metal (AREA)
Description
以下の表に試験された組成をまとめ、元素含有率を重量%で表す。
鋳造したままの鋼半製品を1200℃まで再加熱し、910℃の仕上げ圧延温度FRTで熱間圧延し、550℃の温度Tcoilで巻き取った。一部の鋼板をまず600℃の温度TAまで焼鈍し、保持時間tAの間該TA温度に維持し、その後酸洗する。その後、鋼板を圧下率45%で冷間圧延する。冷間圧延鋼板を均熱温度Tsoakまで再加熱し、tsoakの間該温度で維持し、460℃の温度TZnで亜鉛浴中で溶融めっきにより被覆した後、合金化溶融亜鉛めっきし、ここで合金化溶融亜鉛めっき温度TGAは510℃~550℃に含まれ、20秒のtGAの間該温度で維持する。以下の特定の条件を適用した。
Claims (5)
- 冷間圧延合金化溶融亜鉛めっき鋼板であって、重量%で表される、
C:0.15~0.25%
Mn:2.4~3.5%
Si:0.30~0.90%
Cr:0.30~0.70%
Mo:0.05~0.35%
Al:0.001~0.09%
Ti:0.01~0.06%
B:0.0010~0.0040%
Nb:0.01~0.05%
P≦0.020%
S≦0.010%
N≦0.008%
を含み、組成の残余は鉄及び製錬から生じる不可避の不純物である化学組成を有し、該鋼板は、表面分率で、
- 80%~90%のマルテンサイト、
- 残余はフェライト及びベイナイト
からなる微細組織を有し、
- フェライトが5%以上であり、
- ベイナイトが5%以上であり、
- 鋼板の引張強度が1450MPA以上である、
冷間圧延合金化溶融亜鉛めっき鋼板。 - ケイ素含有率が0.30%~0.70%の間に含まれる、請求項1に記載の冷間圧延合金化溶融亜鉛めっき鋼板。
- 請求項1に記載の冷間圧延合金化溶融亜鉛めっき鋼板の製造方法であって、以下の連続工程
- 鋼を鋳造して半製品とし、該半製品は請求項1に記載の組成を有する工程、
- スラブを1150℃~1300℃に含まれる温度Treheatまで再加熱する工程、
- 再加熱したスラブを850℃~950℃に含まれる最終圧延温度で熱間圧延し、熱間圧延鋼板を得る工程、次いで
- 該鋼板を250℃~650℃に含まれる巻取り温度Tcoilまで冷却する工程、次いで
- 鋼板を該温度Tcoilで巻き取り、巻き取られた鋼板を得る工程、次いで
- 鋼板を酸洗いする工程、
- 鋼板を500℃~650℃に含まれる焼鈍温度TAまで焼鈍し、鋼板を該温度TAに保持時間tAの間保持する工程、
- 任意に鋼板を酸洗いする工程、
- 熱間圧延鋼板を圧下率20%~80%の間で冷間圧延し、冷間圧延鋼板を得る工程、
- 冷間圧延鋼板をAc1~Ac3に含まれる均熱温度Tsoakまで加熱し、鋼板を該温度Tsoakに30秒~200秒に含まれる保持時間t soak の間維持して、85%~95%のオーステナイト及び5%~15%のフェライトを得る工程、
- 鋼板を440℃~480℃に含まれる温度に冷却する工程、
- 450℃~480℃に含まれる温度TZnで亜鉛浴に連続浸漬することにより鋼板を被覆する工程、
- 鋼板を510℃~550℃に含まれる合金化溶融亜鉛めっき温度TGAまで再加熱し、鋼板を該温度TGAで10秒~30秒に含まれる保持時間tGAの間維持する工程、
- 再加熱した鋼板を室温まで冷却し、冷間圧延合金化溶融亜鉛めっき鋼板を得る工程
を含む、製造方法。 - 熱間圧延鋼板の前記焼鈍が、500℃~650℃に含まれる焼鈍温度TAで該焼鈍温度における持続時間tAが1800秒~36000秒である不活性雰囲気中でのバッチ処理によって行われる、請求項3に記載の冷間圧延合金化溶融亜鉛めっき鋼板の製造方法。
- 熱間圧延鋼板の前記焼鈍が、550℃~650℃に含まれる焼鈍温度TAで該焼鈍温度における持続時間tAが30秒~100秒である連続焼鈍によって行われる、請求項3に記載の冷間圧延合金化溶融亜鉛めっき鋼板の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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IBPCT/IB2020/051750 | 2020-03-02 | ||
PCT/IB2020/051750 WO2021176249A1 (en) | 2020-03-02 | 2020-03-02 | High strength cold rolled and galvannealed steel sheet and manufacturing process thereof |
PCT/IB2021/050994 WO2021176285A1 (en) | 2020-03-02 | 2021-02-08 | High strength cold rolled and galvannealed steel sheet and manufacturing process thereof |
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JP2023508240A JP2023508240A (ja) | 2023-03-01 |
JP7488351B2 true JP7488351B2 (ja) | 2024-05-21 |
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US (1) | US20230141248A1 (ja) |
EP (1) | EP4114994B1 (ja) |
JP (1) | JP7488351B2 (ja) |
KR (1) | KR20220128659A (ja) |
CN (1) | CN115066507B (ja) |
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CA3236022A1 (en) * | 2021-10-29 | 2023-05-04 | Arcelormittal | Cold rolled and heat treated steel sheet and a method of manufacturing thereof |
CN117004878A (zh) * | 2022-04-29 | 2023-11-07 | 宝山钢铁股份有限公司 | 一种抗拉强度在1450MPa以上的超高强度冷轧钢带及其制造方法 |
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ZA202207671B (en) | 2023-04-26 |
EP4114994B1 (en) | 2024-03-27 |
WO2021176249A1 (en) | 2021-09-10 |
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MX2022010798A (es) | 2022-09-27 |
WO2021176285A1 (en) | 2021-09-10 |
CN115066507B (zh) | 2023-12-22 |
JP2023508240A (ja) | 2023-03-01 |
US20230141248A1 (en) | 2023-05-11 |
BR112022014638A2 (pt) | 2022-09-13 |
MA58835B1 (fr) | 2024-05-31 |
FI4114994T3 (fi) | 2024-04-26 |
PL4114994T3 (pl) | 2024-06-24 |
EP4114994A1 (en) | 2023-01-11 |
CA3167692A1 (en) | 2021-09-10 |
CN115066507A (zh) | 2022-09-16 |
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