KR101719947B1 - 고강도 합금화 용융 아연 도금 강판의 제조 방법 - Google Patents
고강도 합금화 용융 아연 도금 강판의 제조 방법 Download PDFInfo
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- KR101719947B1 KR101719947B1 KR1020157030769A KR20157030769A KR101719947B1 KR 101719947 B1 KR101719947 B1 KR 101719947B1 KR 1020157030769 A KR1020157030769 A KR 1020157030769A KR 20157030769 A KR20157030769 A KR 20157030769A KR 101719947 B1 KR101719947 B1 KR 101719947B1
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 119
- 239000010959 steel Substances 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 68
- 230000003647 oxidation Effects 0.000 claims abstract description 64
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000001301 oxygen Substances 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 21
- 239000008397 galvanized steel Substances 0.000 claims abstract description 21
- 238000005275 alloying Methods 0.000 claims abstract description 20
- 238000000137 annealing Methods 0.000 claims description 28
- 238000005246 galvanizing Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 abstract description 58
- 229910052748 manganese Inorganic materials 0.000 abstract description 35
- 230000007797 corrosion Effects 0.000 abstract description 19
- 238000005260 corrosion Methods 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 10
- 239000010410 layer Substances 0.000 description 25
- 230000000694 effects Effects 0.000 description 16
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 229910052814 silicon oxide Inorganic materials 0.000 description 7
- 239000010953 base metal Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 238000010348 incorporation Methods 0.000 description 5
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- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000010960 cold rolled steel Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000003618 dip coating Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 210000003038 endothelium Anatomy 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000005244 galvannealing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
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Abstract
Description
도 2 는, 산화 처리 후, 용융 도금을 실시하고, 합금화 처리를 실시한 후의 강판의 단면 SEM 이미지이다.
도 3 은, Mn 첨가량, 산화로 출측 온도 및 지철의 취입과의 관계를 나타내는 도면이다.
Claims (3)
- 강의 화학 성분이 C : 0.01 ∼ 0.20 질량%, Si : 0.5 ∼ 2.0 질량%, Mn : 1.0 ∼ 3.0 질량% 를 함유하고, 잔부가 Fe 및 불가피적 불순물로 이루어지는 강판에 대하여, 분위기의 산소 농도가 0 vol % 초과 1 vol% 미만인 영역에 있어서, 강판의 평균 승온 속도가 20 ℃/sec 이상 25 ℃/sec 이하 또한 최고 도달 온도 T 가 400 ℃ ∼ 500 ℃ 가 되도록 산화 처리를 실시하고, 이어서, 분위기의 산소 농도가 1 vol% 이상 5 vol % 이하인 영역에 있어서, 강판의 평균 승온 속도가 6 ℃/sec 이상 10 ℃/sec 미만 또한 최고 도달 온도가 600 ℃ 이상 780 ℃ 이하가 되도록 산화 처리를 실시하고, 이어서, 환원 어닐링, 용융 아연 도금 처리를 실시하고, 추가로 460 ∼ 600 ℃ 의 온도에서 10 ∼ 60 초간 가열하여 합금화 처리를 실시하는 것을 특징으로 하는 고강도 합금화 용융 아연 도금 강판의 제조 방법.
- 제 1 항에 있어서,
상기 산소 농도가 1 vol% 이상 5 vol % 이하인 영역에서의 최고 도달 온도 T 가 추가로 하기 식을 만족하는 것을 특징으로 하는 고강도 합금화 용융 아연 도금 강판의 제조 방법:
T ≤ -80 [Mn] - 75 [Si] + 1030
[Si] : 강 중의 Si 질량%
[Mn] : 강 중의 Mn 질량%. - 삭제
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