JP2012514132A - 深絞り性に優れ高降伏比を有する高強度冷延鋼板、これを用いた溶融亜鉛メッキ鋼板、合金化溶融亜鉛メッキ鋼板及びこれらの製造方法 - Google Patents
深絞り性に優れ高降伏比を有する高強度冷延鋼板、これを用いた溶融亜鉛メッキ鋼板、合金化溶融亜鉛メッキ鋼板及びこれらの製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 20
- 229910001335 Galvanized steel Inorganic materials 0.000 title claims abstract description 18
- 239000008397 galvanized steel Substances 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 66
- 239000010959 steel Substances 0.000 claims abstract description 66
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 19
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 16
- 229910052796 boron Inorganic materials 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 238000000137 annealing Methods 0.000 claims description 28
- 229910001566 austenite Inorganic materials 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 21
- 230000009466 transformation Effects 0.000 claims description 16
- 238000005097 cold rolling Methods 0.000 claims description 11
- 238000005098 hot rolling Methods 0.000 claims description 11
- 230000009467 reduction Effects 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052758 niobium Inorganic materials 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000005246 galvanizing Methods 0.000 claims description 3
- 238000003303 reheating Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 description 17
- 239000006104 solid solution Substances 0.000 description 14
- 239000010936 titanium Substances 0.000 description 14
- 239000010955 niobium Substances 0.000 description 13
- 239000011572 manganese Substances 0.000 description 12
- 239000002131 composite material Substances 0.000 description 9
- 229910000859 α-Fe Inorganic materials 0.000 description 9
- 230000007423 decrease Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 150000001247 metal acetylides Chemical class 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 238000009628 steelmaking Methods 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 5
- 238000001953 recrystallisation Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910001563 bainite Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000009849 vacuum degassing 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C21D8/04—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
- C21D8/0426—Hot 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
- C21D8/04—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
- C21D8/0436—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
- C21D8/04—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
- C21D8/0447—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
- C21D8/0473—Final recrystallisation annealing
-
- 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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- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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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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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Eq_N=N−14×(Ti/47.9+Zr/91.2+B/10.8)
Eq_C=C−12/92.9×Nb<Ti、Zr未添加>
Eq_C=C−12×(Nb/92.9+(Ti−47.9/14×N)/47.9+(Zr−91.2/14×N)/91.2)<Ti、Zr添加>
(ここで、Ti−47.9/14×N<0の場合は、Ti−47.9/14×N=0とみなし、Zr−91.2/14×N<0の場合は、Zr−91.2/14×N=0とみなす。)
Description
Eq_C=C−12/92.9×Nb<Ti、Zr未添加>
Eq_C=C−12×(Nb/92.9+(Ti−47.9/14×N)/47.9+(Zr−91.2/14×N)/91.2)<Ti、Zr添加>
(ここで、Ti−47.9/14×N<0の場合は、Ti−47.9/14×N=0とみなし、Zr−91.2/14×N<0の場合は、Zr−91.2/14×N=0とみなす。)
Eq_C=C−12/92.9×Nb<Ti、Zr未添加>
Eq_C=C−12×(Nb/92.9+(Ti−47.9/14×N)/47.9+(Zr−91.2/14×N)/91.2)<Ti、Zr添加>
(ここで、Ti−47.9/14×N<0の場合は、Ti−47.9/14×N=0とみなし、Zr−91.2/14×N<0の場合は、Zr−91.2/14×N=0とみなす。)
Claims (9)
- 重量%で、C:0.02〜0.05%、Mn:1.0〜3.0%、Si:0.5〜2.0%、P:0.05%以下、N:0.006%以下、Al:0.01〜0.1%、S:0.012%以下、Nb:0.04〜0.15%、及びTi、B及びZrからなる群から選択される1種以上であって、下記のEq_N値が0.001以下であり且つEq_C値が0.03以下であることを満足する元素、並びに残部Fe及びその他の不可避不純物を含み、かつ残留オーステナイトを5%以下の分率で含有する、深絞り性に優れ高降伏比を有する高強度冷延鋼板:
Eq_N=N−14×(Ti/47.9+Zr/91.2+B/10.8)
Eq_C=C−12/92.9×Nb<Ti、Zr未添加>
Eq_C=C−12×(Nb/92.9+(Ti−47.9/14×N)/47.9+(Zr−91.2/14×N)/91.2)<Ti、Zr添加>
(ここで、Ti−47.9/14×N<0の場合は、Ti−47.9/14×N=0とみなし、Zr−91.2/14×N<0の場合は、Zr−91.2/14×N=0とみなす。)。 - 前記組成がSb:0.03%以下をさらに含む、請求項1に記載の深絞り性に優れ高降伏比を有する高強度冷延鋼板。
- 前記冷延鋼板は、引張強度が490MPa以上であり、r(塑性異方性指数)値が1.4以上であり、降伏比が60%以上である、請求項1に記載の深絞り性に優れ高降伏比を有する高強度冷延鋼板。
- 請求項1から3のいずれか一項に記載の前記冷延鋼板に溶融亜鉛メッキ層を含む、深絞り性に優れ高降伏比を有する高強度溶融亜鉛メッキ鋼板。
- 請求項4に記載の前記亜鉛メッキ鋼板を熱処理することにより合金化亜鉛メッキ層を含む、深絞り性に優れ高降伏比を有する高強度合金化溶融亜鉛メッキ鋼板。
- 重量%で、C:0.02〜0.05%、Mn:1.0〜3.0%、Si:0.5〜2.0%、P:0.05%以下、N:0.006%以下、Al:0.01〜0.1%、S:0.012%以下、Nb:0.04〜0.15%、及びTi、B及びZrからなる群から選択される1種以上であって、下記のEq_N値が0.001以下であり且つEq_C値が0.03以下であることを満足する元素、並びに残部Fe及びその他の不可避不純物を含む鋼スラブを再加熱し、Ar3変態点以上の温度で仕上げの熱間圧延を行う段階と、
前記熱間圧延が行われた熱延鋼板を冷却し、600〜750℃の温度範囲で巻き取る段階と、
前記巻き取られた熱延鋼板を63〜90%の圧下率で冷間圧延する段階と、
前記冷間圧延された冷延鋼板を780〜880℃の温度範囲で連続焼鈍する段階と、
を含む、深絞り性に優れ高降伏比を有する高強度冷延鋼板の製造方法。
Eq_N=N−14×(Ti/47.9+Zr/91.2+B/10.8)
Eq_C=C−12/92.9×Nb<Ti、Zr未添加>
Eq_C=C−12×(Nb/92.9+(Ti−47.9/14×N)/47.9+(Zr−91.2/14×N)/91.2)<Ti、Zr添加>
(ここで、Ti−47.9/14×N<0の場合は、Ti−47.9/14×N=0とみなし、Zr−91.2/14×N<0の場合は、Zr−91.2/14×N=0とみなす。) - 前記組成がSb:0.03%以下をさらに含む、請求項6に記載の深絞り性に優れ高降伏比を有する高強度冷延鋼板の製造方法。
- 請求項6又は7に記載の方法で製造された冷延鋼板に溶融亜鉛メッキを行って溶融亜鉛メッキ層を形成する段階を含む、深絞り性に優れ高降伏比を有する高強度溶融亜鉛メッキ鋼板の製造方法。
- 請求項8に記載の方法で製造された溶融亜鉛メッキ鋼板に熱処理を行って合金化溶融亜鉛メッキ層を形成する段階を含む、深絞り性に優れ高降伏比を有する高強度合金化溶融亜鉛メッキ鋼板の製造方法。
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KR1020090120367A KR101153485B1 (ko) | 2008-12-24 | 2009-12-07 | 딥드로잉성이 우수하고 고항복비를 갖는 고강도 냉연강판, 이를 이용한 용융아연도금강판, 합금화 용융아연도금강판 및 이들의 제조방법 |
PCT/KR2009/007608 WO2010074458A2 (ko) | 2008-12-24 | 2009-12-18 | 딥드로잉성이 우수하고 고항복비를 갖는 고강도 냉연강판, 이를 이용한 용융아연도금강판, 합금화 용융아연도금강판 및 이들의 제조방법 |
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JP5532088B2 (ja) * | 2011-08-26 | 2014-06-25 | Jfeスチール株式会社 | 深絞り性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 |
US11946111B2 (en) * | 2016-03-31 | 2024-04-02 | Jfe Steel Corporation | Steel sheet, coated steel sheet, method for producing hot-rolled steel sheet, method for producing cold-rolled full hard steel sheet, method for producing heat-treated steel sheet, method for producing steel sheet, and method for producing coated steel sheet |
KR102031452B1 (ko) | 2017-12-24 | 2019-10-11 | 주식회사 포스코 | 소부경화성 및 도금밀착성이 우수한 냉연강판, 용융 아연계 도금강판 및 그 제조방법 |
CN110093491B (zh) * | 2019-05-17 | 2020-12-22 | 中冶赛迪工程技术股份有限公司 | 一种冷轧热镀锌双相钢及其制造方法 |
CN115491583B (zh) * | 2021-06-18 | 2023-09-05 | 上海梅山钢铁股份有限公司 | 一种超深冲冷轧热镀铝锌钢板及其制造方法 |
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JP2002146475A (ja) * | 2000-11-02 | 2002-05-22 | Kawasaki Steel Corp | 合金化溶融亜鉛めっき鋼板 |
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JP2005187939A (ja) * | 2003-12-05 | 2005-07-14 | Jfe Steel Kk | 高強度冷延鋼板およびその製造方法 |
JP2006037130A (ja) * | 2004-07-23 | 2006-02-09 | Nippon Steel Corp | ホットプレス用めっき鋼板の製造方法 |
WO2008082146A1 (en) * | 2006-12-28 | 2008-07-10 | Posco | High strength zn-coated steel sheet having excellent mechanical properites and surface quality and the method for manufacturing the same |
JP2008174825A (ja) * | 2007-01-22 | 2008-07-31 | Jfe Steel Kk | 高強度鋼板および高強度めっき鋼板の製造方法 |
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JP4313591B2 (ja) * | 2003-03-24 | 2009-08-12 | 新日本製鐵株式会社 | 穴拡げ性と延性に優れた高強度熱延鋼板及びその製造方法 |
CN100507053C (zh) * | 2004-11-29 | 2009-07-01 | 宝山钢铁股份有限公司 | 一种800MPa冷轧热镀锌双相钢及其制造方法 |
KR100711358B1 (ko) * | 2005-12-09 | 2007-04-27 | 주식회사 포스코 | 성형성, 소부경화성 및 도금특성이 우수한 고강도 냉연강판및 용융아연도금강판, 그리고 이들의 제조방법 |
JP4752522B2 (ja) * | 2006-01-25 | 2011-08-17 | Jfeスチール株式会社 | 深絞り用高強度複合組織型冷延鋼板の製造方法 |
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JP2002146475A (ja) * | 2000-11-02 | 2002-05-22 | Kawasaki Steel Corp | 合金化溶融亜鉛めっき鋼板 |
JP2002206139A (ja) * | 2000-12-29 | 2002-07-26 | Nippon Steel Corp | めっき密着性およびプレス成形性に優れた高強度合金化溶融亜鉛めっき鋼板と高強度溶融亜鉛めっき鋼板およびその製造方法 |
JP2005187939A (ja) * | 2003-12-05 | 2005-07-14 | Jfe Steel Kk | 高強度冷延鋼板およびその製造方法 |
JP2006037130A (ja) * | 2004-07-23 | 2006-02-09 | Nippon Steel Corp | ホットプレス用めっき鋼板の製造方法 |
WO2008082146A1 (en) * | 2006-12-28 | 2008-07-10 | Posco | High strength zn-coated steel sheet having excellent mechanical properites and surface quality and the method for manufacturing the same |
JP2008174825A (ja) * | 2007-01-22 | 2008-07-31 | Jfe Steel Kk | 高強度鋼板および高強度めっき鋼板の製造方法 |
JP2009235532A (ja) * | 2008-03-28 | 2009-10-15 | Jfe Steel Corp | 深絞り性に優れた高強度鋼板及びその製造方法 |
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JP2011219855A (ja) * | 2010-03-24 | 2011-11-04 | Jfe Steel Corp | 深絞り性に優れた高強度冷延鋼板およびその製造方法 |
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JP5764498B2 (ja) | 2015-08-19 |
CN102301022B (zh) | 2013-07-10 |
KR101153485B1 (ko) | 2012-06-11 |
CN102301022A (zh) | 2011-12-28 |
KR20100075381A (ko) | 2010-07-02 |
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