KR100918549B1 - 합금화 용융아연도금강판 및 그 제조방법 - Google Patents
합금화 용융아연도금강판 및 그 제조방법 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 229910000831 Steel Inorganic materials 0.000 title description 37
- 239000010959 steel Substances 0.000 title description 37
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 46
- 239000008397 galvanized steel Substances 0.000 claims abstract description 46
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 20
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 16
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 12
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 229910001566 austenite Inorganic materials 0.000 claims description 43
- 239000010960 cold rolled steel Substances 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 23
- 229910000859 α-Fe Inorganic materials 0.000 claims description 18
- 238000005275 alloying Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 238000000137 annealing Methods 0.000 claims description 12
- 238000005246 galvanizing Methods 0.000 claims description 12
- 229910000734 martensite Inorganic materials 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910001562 pearlite Inorganic materials 0.000 claims description 6
- 229910001563 bainite Inorganic materials 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 14
- 238000007747 plating Methods 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 7
- 150000001247 metal acetylides Chemical class 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000006104 solid solution Substances 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
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- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
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- 238000005204 segregation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
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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
- 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
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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
- C21D8/0247—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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- 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
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- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- 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
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- 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
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Abstract
Description
Claims (18)
- 질량%로, C: 0.05∼0.25%, Si: 2.0% 이하, Mn: 1∼3%, P: 0.1% 이하, S: 0.01% 이하, Al: 0.3∼2%, N: 0.005% 미만, Cr: 1% 이하, V: 1% 이하, Mo: 1% 이하, Ti: 0.005%미만, Nb: 0.005% 미만을 함유하고, 또한 Si+Al≥0.6%, Cr+V+Mo: 0.1∼2%를 충족시키고, 잔부(殘部) Fe 및 불가피적 불순물로 이루어지며, 금속조직이 체적율로, 페라이트상 40∼90%, 잔류 오스테나이트 상 3∼20%, 베이나이트 상, 마르텐사이트 상 및 펄라이트 상이 합계로 7∼50%로 이루어지는 것을 특징으로 하는 합금화 용융아연도금강판.
- 질량%로, C: 0.05∼0.25%, Si: 2.0% 이하, Mn: 1∼3%, P: 0.1% 이하, S: 0.01% 이하, Al: 0.3∼2%, N: 0.005% 미만, Cr: 1% 이하, V: 1% 이하, Mo: 1% 이하, Ti: 0.005% 미만, Nb: 0.005% 미만을 함유하고, 또한 Si+Al≥0.6%, N≤0.007%-(0.003×Al)%, Cr+V+Mo: 0.1∼2%를 충족하고, 잔부 Fe 및 불가피적 불순물로 이루어지며, 금속조직이 체적율로, 페라이트상 40∼90%, 잔류 오스테나이트 상 3∼20%, 베이나이트 상, 마르텐사이트 상 및 펄라이트 상이 합계로 7∼50%로 이루어지는 것을 특징으로 하는 합금화 용융아연도금강판.
- 제1항에 있어서,질량%로, B: 0.005% 이하, Ni: 1% 이하 중 1종 또는 2종을 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판.
- 제2항에 있어서,질량%로, B: 0.005% 이하, Ni : 1% 이하 중 1종 또는 2종을 더 함유하는 것 을 특징으로 하는 합금화 용융아연도금강판.
- 제1항에 있어서,질량%로, Ca 및 REM 중 1종 또는 2종을 합계로 0.01% 이하를 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판.
- 제2항에 있어서,질량%로, Ca 및 REM 중 1종 또는 2종을 합계로 0.01% 이하를 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판.
- 제3항에 있어서,질량%로, Ca 및 REM 중 1종 또는 2종을 합계로 0.01% 이하를 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판.
- 제4항에 있어서,질량%로, Ca 및 REM 중 1종 또는 2종을 합계로 0.01% 이하를 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판.
- 삭제
- 질량%로, C: 0.05∼0, 25%, Si: 2% 이하, Mn: 1∼3%, P: 0.1% 이하, S: 0.01% 이하, Al: 0.3∼2%, N: 0.005% 미만, Cr: 1% 이하, V: 1% 이하, Mo: 1% 이하, Ti: 0.005% 미만, Nb: 0.005% 미만, 잔부 Fe 및 불가피적 불순물로 이루어지고, 또한 Si+Al≥0.6%, Cr+V+Mo: 0.1∼2%를 충족하는 냉연강판을 730∼900℃의 온도영역에서 소둔하는 공정,소둔된 냉연강판을 3∼100℃/초의 냉각속도로 냉각하는 공정,냉각된 냉연강판을 350∼600℃의 온도영역에서 30∼250초 유지하는 공정,유지 후의 냉연강판에 용융아연도금하는 공정,용융아연도금된 냉연강판을 470∼600℃의 온도로 합금화하는 공정을 갖고,금속조직이 체적율로, 페라이트상 40∼90%, 잔류 오스테나이트 상 3∼20%, 베이나이트 상, 마르텐사이트 상 및 펄라이트 상이 합계로 7∼50%로 이루어지는 것을 특징으로 하는 합금화 용융아연도금강판의 제조방법.
- 질량%로, C: 0.05∼0.25%, Si : 2% 이하, Mn: 1∼3%, P: 0.1% 이하, S: 0.01% 이하, Al: 0.3∼2%, N: 0.005% 미만, Cr: 1% 이하, V: 1% 이하, Mo: 1% 이하, Ti:·0.005% 미만, Nb: 0.005% 미만, 잔부 Fe 및 불가피적 불순물로 이루어지고, 또한, Si+Al≥0.6%, N≤0.007%-(0.003×Al)%, Cr+V+Mo: 0.1∼2%를 만족하는 냉연강판을 730∼900℃의 온도영역에서 소둔하는 공정,소둔된 냉연강판을 3∼100℃/초의 냉각속도로 냉각하는 공정,냉각된 냉연강판을 350∼600℃의 온도영역에서 30∼250초 유지하는 공정,유지 후의 냉연강판에 용융아연도금하는 공정,용융아연도금된 냉연강판을 470∼600℃의 온도로 합금화하는 공정을 갖고,금속조직이 체적율로, 페라이트상 40∼90%, 잔류 오스테나이트 상 3∼20%, 베이나이트 상, 마르텐사이트 상 및 펄라이트 상이 합계로 7∼50%로 이루어지는 것을 특징으로 하는 합금화 용융아연도금강판의 제조방법.
- 제10항에 있어서,상기 냉연강판이 질량%로, B: 0.005% 이하, Ni: 1% 이하 중 1종 또는 2종을 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판의 제조방법.
- 제11항에 있어서,상기 냉연강판이 질량%로, B: 0.005% 이하, Ni: 1% 이하 중 1종 또는 2종을 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판의 제조방법.
- 제10항에 있어서,상기 냉연강판이 질량%로, Ca 및 REM 중 1종 또는 2종을 합계로 0.01% 이하를 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판의 제조방법.
- 제11항에 있어서,상기 냉연강판이 질량%로, Ca 및 REM 중 1종 또는 2종을 합계로 0.01% 이하를 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판의 제조방법.
- 제12항에 있어서,상기 냉연강판이 질량%로, Ca 및 REM 중 1종 또는 2종을 합계로 0.01% 이하를 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판의 제조방법.
- 제13항에 있어서,상기 냉연강판이 질량%로, Ca 및 REM 중 1종 또는 2종을 합계로 0.01% 이하를 더 함유하는 것을 특징으로 하는 합금화 용융아연도금강판의 제조방법.
- 삭제
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JP5157257B2 (ja) * | 2007-05-29 | 2013-03-06 | Jfeスチール株式会社 | 低降伏比鋼板 |
US8882938B2 (en) | 2009-12-21 | 2014-11-11 | Tata Steel Ijmuiden B.V. | High strength hot dip galvanised steel strip |
JP5668337B2 (ja) | 2010-06-30 | 2015-02-12 | Jfeスチール株式会社 | 延性及び耐遅れ破壊特性に優れる超高強度冷延鋼板およびその製造方法 |
EP2728027B1 (en) * | 2011-06-30 | 2019-01-16 | Hyundai Steel Company | Heat-hardened steel with excellent crashworthiness and method for manufacturing heat-hardenable parts using same |
EP2762579B2 (en) | 2011-09-30 | 2021-03-03 | Nippon Steel Corporation | High-strength hot-dip galvanized steel sheet and process for producing same |
DK2895635T3 (da) * | 2012-09-14 | 2019-05-20 | Ilsenburger Grobblech Gmbh | Stållegering til lavlegeret højstyrkestål |
WO2017051998A1 (ko) * | 2015-09-22 | 2017-03-30 | 현대제철 주식회사 | 도금 강판 및 이의 제조방법 |
CN108367539B (zh) * | 2015-12-15 | 2021-06-11 | 塔塔钢铁艾默伊登有限责任公司 | 高强度热浸镀锌钢带材 |
WO2020058330A1 (de) * | 2018-09-19 | 2020-03-26 | Sms Group Gmbh | Hochfester mehrphasenstahl, stahlband aus diesem stahl sowie verfahren zur herstellung eines stahlbandes |
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CN112779474A (zh) * | 2020-11-23 | 2021-05-11 | 唐山钢铁集团有限责任公司 | 一种锌基镀层2000MPa级热成形带钢及其生产方法 |
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