JP2011523442A - 高延性及び耐遅れ破壊特性に優れた高強度冷延鋼板、溶融亜鉛メッキ鋼板及びその製造方法 - Google Patents
高延性及び耐遅れ破壊特性に優れた高強度冷延鋼板、溶融亜鉛メッキ鋼板及びその製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 25
- 229910001335 Galvanized steel Inorganic materials 0.000 title claims abstract description 15
- 239000008397 galvanized steel Substances 0.000 title claims abstract description 15
- 230000003111 delayed effect Effects 0.000 title abstract description 32
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 229910052796 boron Inorganic materials 0.000 claims abstract description 15
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 13
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- 238000000137 annealing Methods 0.000 claims description 55
- 229910001566 austenite Inorganic materials 0.000 claims description 50
- 229910000831 Steel Inorganic materials 0.000 claims description 46
- 239000010959 steel Substances 0.000 claims description 46
- 238000001816 cooling Methods 0.000 claims description 28
- 230000000717 retained effect Effects 0.000 claims description 26
- 238000005097 cold rolling Methods 0.000 claims description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 230000009466 transformation Effects 0.000 claims description 17
- 229910000734 martensite Inorganic materials 0.000 claims description 15
- 230000009467 reduction Effects 0.000 claims description 15
- 230000002441 reversible effect Effects 0.000 claims description 12
- 238000005554 pickling Methods 0.000 claims description 11
- 229910052717 sulfur Inorganic materials 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 10
- 238000005246 galvanizing Methods 0.000 claims description 9
- 238000005275 alloying Methods 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 239000006096 absorbing agent Substances 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 239000011572 manganese Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 24
- 239000000203 mixture Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 19
- 230000001965 increasing effect Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 11
- 229910052739 hydrogen Inorganic materials 0.000 description 11
- 239000001257 hydrogen Substances 0.000 description 11
- 238000005098 hot rolling Methods 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 238000005755 formation reaction Methods 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 229910001563 bainite Inorganic materials 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 239000011651 chromium Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 238000005279 austempering Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000013518 molded foam Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000011426 transformation method Methods 0.000 description 1
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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
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- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C21—METALLURGY OF IRON
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- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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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
- 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
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- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
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- 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
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- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- 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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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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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
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0478—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing involving a particular surface treatment
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Abstract
Description
Claims (10)
- 重量%で、C:0.05〜0.3%、Si:0.3〜1.6%、Mn:4.0〜7.0%、Al:0.5〜2.0%、Cr:0.01〜0.1%、Ni:0.02〜0.1%、Ti:0.005〜0.03%、B:5〜30ppm、Sb:0.01〜0.03%、及びS:0.008%以下、並びに残部Fe及び不純物を含むことを特徴とする、高強度冷延鋼板。
- 40〜50%のマトリックスとして焼戻しされたマルテンサイト、20〜40%の残留オーステナイト、および残部フェライトを含む微構造を含むことを特徴とする、請求項1に記載の高強度冷延鋼板。
- 前記冷延鋼板は、980MPa以上の引張強度と28%以上の伸び率を有することを特徴とする、請求項1または請求項2に記載の高強度冷延鋼板。
- 重量%で、C:0.05〜0.3%、Si:0.3〜1.6%、Mn:4.0〜7.0%、Al:0.5〜2.0%、Cr:0.01〜0.1%、Ni:0.02〜0.1%、Ti:0.005〜0.03%、B:5〜30ppm、Sb:0.01〜0.03%、及びS:0.008%以下、並びに残部Fe及び不純物を含み、かつ、亜鉛メッキ層または合金化溶融亜鉛メッキ層を含むことを特徴とする、高強度亜鉛メッキ鋼板。
- 重量%で、C:0.05〜0.3%、Si:0.3〜1.6%、Mn:4.0〜7.0%、Al:0.5〜2.0%、Cr:0.01〜0.1%、Ni:0.02〜0.1%、Ti:0.005〜0.03%、B:5〜30ppm、Sb:0.01〜0.03%、及びS:0.008%以下、並びに残部Fe及び不純物を含む鋼スラブを、1150〜1250℃の温度範囲で加熱後、880〜920℃の温度範囲で熱間仕上圧延をする段階と、
550〜650℃の温度で巻取する段階と、
塩酸で酸洗した後、30〜60%の冷間圧下率で冷間圧延する段階と、
670〜750℃の温度範囲で、60秒以上保持して連続焼鈍し、冷却する段階
とを含む、高強度冷延鋼板の製造方法。 - 重量%で、C:0.05〜0.3%、Si:0.3〜1.6%、Mn:4.0〜7.0%、Al:0.5〜2.0%、Cr:0.01〜0.1%、Ni:0.02〜0.1%、Ti:0.005〜0.03%、B:5〜30ppm、Sb:0.01〜0.03%、及びS:0.008%、並びに残部Fe及び不純物を含む鋼スラブを、1150〜1250℃の温度範囲で加熱後、880〜920℃の温度範囲で熱間仕上圧延をする段階と、
550〜650℃の温度で巻取する段階と、
塩酸で酸洗した後、30〜60%の冷間圧下率で冷間圧延する段階と、
620〜720℃の温度範囲で、1〜24時間、箱焼鈍して逆変態処理する段階と、
10〜200℃/sの冷却速度で冷却する段階
とを含む、高強度冷延鋼板の製造方法。 - 重量%で、C:0.05〜0.3%、Si:0.3〜1.6%、Mn:4.0〜7.0%、Al:0.5〜2.0%、Cr:0.01〜0.1%、Ni:0.02〜0.1%、Ti:0.005〜0.03%、B:5〜30ppm、Sb:0.01〜0.03%、及びS:0.008%以下、並びに残部Fe及び不純物を含む鋼スラブを、1150〜1250℃の温度範囲で加熱後、880〜920℃の温度範囲で熱間仕上圧延をする段階と、
550〜650℃の温度で巻取する段階と、
塩酸で酸洗した後、30〜60%の冷間圧下率で冷間圧延する段階と、
670〜750℃の温度範囲で、60秒以上保持して連続焼鈍し、冷却する段階と、
450〜500℃の温度範囲で亜鉛メッキする段階
とを含む、高強度亜鉛メッキ鋼板の製造方法。 - 重量%で、C:0.05〜0.3%、Si:0.3〜1.6%、Mn:4.0〜7.0%、Al:0.5〜2.0%、Cr:0.01〜0.1%、Ni:0.02〜0.1%、Ti:0.005〜0.03%、B:5〜30ppm、Sb:0.01〜0.03%、及びS:0.008%以下、並びに残部Fe及び不純物を含む鋼スラブを、1150〜1250℃の温度範囲で加熱後、880〜920℃の温度範囲で熱間仕上圧延する段階と、
550〜650℃の温度で巻取する段階と、
塩酸で酸洗した後、30〜60%の冷間圧下率で冷間圧延する段階と、
670〜750℃の温度範囲で、60秒以上保持して連続焼鈍し、冷却する段階と、
450〜500℃の温度範囲で亜鉛メッキする段階と、
500〜600℃で合金化溶融亜鉛メッキする段階
とを含む、高強度合金化溶融亜鉛メッキ鋼板の製造方法。 - 重量%で、C:0.05〜0.3%、Si:0.3〜1.6%、Mn:4.0〜7.0%、Al:0.5〜2.0%、Cr:0.01〜0.1%、Ni:0.02〜0.1%、Ti:0.005〜0.03%、B:5〜30ppm、Sb:0.01〜0.03%、及びS:0.008%以下、並びに残部Fe及び不純物を含む鋼スラブを、1150〜1250℃の温度範囲で加熱後、880〜920℃の温度範囲で熱間仕上圧延をする段階と、
550〜650℃の温度で巻取する段階と、
塩酸で酸洗した後、30〜60%の冷間圧下率で冷間圧延する段階と、
620〜720℃の温度範囲で、1〜24時間、箱焼鈍して逆変態処理する段階と、
10〜200℃/sの冷却速度で冷却する段階と、
450〜500℃の温度範囲で亜鉛メッキする段階と、
を含む、高強度亜鉛メッキ鋼板の製造方法。 - 重量%で、C:0.05〜0.3%、Si:0.3〜1.6%、Mn:4.0〜7.0%、Al:0.5〜2.0%、Cr:0.01〜0.1%、Ni:0.02〜0.1%、Ti:0.005〜0.03%、B:5〜30ppm、Sb:0.01〜0.03%、及びS:0.008%以下、並びに残部Fe及び不純物を含む鋼スラブを、1150〜1250℃の温度範囲で加熱後、880〜920℃の温度範囲で熱間仕上圧延をする段階と、
550〜650℃の温度で巻取する段階と、
塩酸で酸洗いした後、30〜60%の冷間圧下率で冷間圧延する段階と、
620〜720℃の温度範囲で、1〜24時間、箱焼鈍して逆変態処理する段階と、
10〜200℃/sの冷却速度で冷却する段階と、
450〜500℃の温度範囲で亜鉛メッキする段階と、
500〜600℃で合金溶融亜鉛めっきする段階と、
を含む、高強度合金化溶融亜鉛メッキ鋼板の製造方法。
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US10472692B2 (en) | 2014-07-03 | 2019-11-12 | Arcelormittal | Method for manufacturing a high strength steel sheet having improved formability and ductility and sheet obtained |
US11203795B2 (en) | 2015-11-02 | 2021-12-21 | Posco | Ultra-high strength steel plate having excellent formability and hole-expandability, and method for manufacturing same |
JP2018536764A (ja) * | 2015-11-02 | 2018-12-13 | ポスコPosco | 成形性及び穴拡げ性に優れた超高強度鋼板及びその製造方法 |
JP2021509147A (ja) * | 2017-12-26 | 2021-03-18 | ポスコPosco | 超高強度熱延鋼板、鋼管、部材、及びその製造方法 |
JP7186229B2 (ja) | 2017-12-26 | 2022-12-08 | ポスコ | 超高強度熱延鋼板、鋼管、部材、及びその製造方法 |
US11939639B2 (en) | 2017-12-26 | 2024-03-26 | Posco Co., Ltd | Ultra-high-strength hot-rolled steel sheet, steel pipe, member, and manufacturing methods therefor |
JP6687171B1 (ja) * | 2018-07-18 | 2020-04-22 | 日本製鉄株式会社 | 鋼板 |
WO2020017606A1 (ja) * | 2018-07-18 | 2020-01-23 | 日本製鉄株式会社 | 鋼板 |
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KR101027250B1 (ko) | 2011-04-06 |
KR20090120759A (ko) | 2009-11-25 |
JP5470375B2 (ja) | 2014-04-16 |
US9109273B2 (en) | 2015-08-18 |
WO2009142362A1 (en) | 2009-11-26 |
US20110083774A1 (en) | 2011-04-14 |
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