KR101290421B1 - 스테인리스 냉연강판의 소둔산세 방법 - Google Patents
스테인리스 냉연강판의 소둔산세 방법 Download PDFInfo
- Publication number
- KR101290421B1 KR101290421B1 KR1020090077479A KR20090077479A KR101290421B1 KR 101290421 B1 KR101290421 B1 KR 101290421B1 KR 1020090077479 A KR1020090077479 A KR 1020090077479A KR 20090077479 A KR20090077479 A KR 20090077479A KR 101290421 B1 KR101290421 B1 KR 101290421B1
- Authority
- KR
- South Korea
- Prior art keywords
- annealing
- stainless steel
- steel sheet
- cold rolled
- temperature
- Prior art date
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 29
- 238000005554 pickling Methods 0.000 title claims abstract description 27
- 239000010935 stainless steel Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000000137 annealing Methods 0.000 claims abstract description 60
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 29
- 150000003839 salts Chemical class 0.000 claims abstract description 25
- 239000010960 cold rolled steel Substances 0.000 claims abstract description 16
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000010306 acid treatment Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 4
- 229910000765 intermetallic Inorganic materials 0.000 abstract description 24
- 229910045601 alloy Inorganic materials 0.000 abstract description 11
- 239000000956 alloy Substances 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 238000001953 recrystallisation Methods 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000004220 aggregation Methods 0.000 abstract description 2
- 230000002776 aggregation Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 18
- 230000007797 corrosion Effects 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 13
- 239000011651 chromium Substances 0.000 description 10
- 238000005097 cold rolling Methods 0.000 description 8
- 229910052804 chromium Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
Images
Classifications
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D2211/001—Austenite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
구분 | 5mpm | 10mpm | 20mpm | 30mpm | 40mpm | 50mpm |
1050℃ | 250Hv | 251Hv | 255Hv | 260Hv | 255Hv | 253Hv |
1060℃ | 237Hv | 240Hv | 241Hv | 242Hv | 244Hv | 245Hv |
1070℃ | 188Hv | 192Hv | 192Hv | 194Hv | 205Hv | 214Hv |
1080℃ | 188Hv | 191Hv | 191Hv | 193Hv | 202Hv | 210Hv |
1100℃ | 185Hv | 188Hv | 190Hv | 191Hv | 199Hv | 204Hv |
1120℃ | 183Hv | 185Hv | 187Hv | 190Hv | 191Hv | 193Hv |
1140℃ | 184Hv | 185Hv | 186Hv | 186Hv | 187Hv | 189Hv |
1150℃ | 183Hv | 184Hv | 184Hv | 184Hv | 186Hv | 189Hv |
구분 | 25℃ | 300℃ | 350℃ | 400℃ | 450℃ | 500℃ |
산세효율(%) | 0 | 30 | 50 | 80 | 95 | 100 |
Claims (6)
- 스테인리스 강판을 1050~1150℃의 소둔 온도에서 5~50mpm의 라인스피드로 소둔하는 단계;상기 소둔 후 스트립의 온도를 400~550℃로 유지하는 단계;상기 스트립을 용융염 처리하는 단계; 및상기 용융염 처리 후 황산조 및, 불산 10~30g/L와 질산 80~120g/L의 혼산조에 침지하는 단계;를 포함하되,상기 유지하는 단계는 상기 용융염 처리 전의 상기 스트립의 온도가 400℃ 이하일 경우 상기 스트립을 예열하여 상기 스트립의 온도를 400~550℃의 온도로 유지하는 스테인리스 냉연강판의 소둔산세 방법.
- 삭제
- 제1항에 있어서,상기 스테인리스 강판은 내공식지수가 40 이상인 스테인리스 냉연강판의 소둔산세 방법.내공식지수 = Cr% + 3.3 * Mo% + 30 * N%
- 제3항에 있어서,상기 스테인리스 강판은 중량%로, Cr:18~25, Ni:17~25, Mo:4~8, N:0.1~0.35, C:0 초과~0.08 이하, Si:0 초과~1.5 이하, Mn:0 초과~2.0 이하, P:0 초과~0.045 이하, S:0 초과~0.03 이하, 나머지 철(Fe) 및 불가피한 불순물로 이루어지는 스테인리스 냉연강판의 소둔산세 방법.
- 삭제
- 제1항에 있어서,상기 황산 및 혼산 처리 시 상기 황산조 및 혼산조의 온도는 40~70℃를 유지하는 스테인리스 냉연강판의 소둔산세 방법.
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KR1020090077479A KR101290421B1 (ko) | 2009-08-21 | 2009-08-21 | 스테인리스 냉연강판의 소둔산세 방법 |
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KR1020090077479A KR101290421B1 (ko) | 2009-08-21 | 2009-08-21 | 스테인리스 냉연강판의 소둔산세 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20110019877A KR20110019877A (ko) | 2011-03-02 |
KR101290421B1 true KR101290421B1 (ko) | 2013-07-26 |
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KR1020090077479A KR101290421B1 (ko) | 2009-08-21 | 2009-08-21 | 스테인리스 냉연강판의 소둔산세 방법 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101650318B1 (ko) * | 2015-03-24 | 2016-08-23 | 금오공과대학교 산학협력단 | 스테인리스강의 질화방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100311792B1 (ko) | 1997-12-11 | 2001-11-22 | 이구택 | 페라이트계 스테인레스강의 산세방법 |
KR100368207B1 (ko) | 1995-12-11 | 2003-05-09 | 주식회사 포스코 | 오스테나이트계스텐레스냉연소둔강판의전해산세액 |
KR100437641B1 (ko) * | 1999-12-20 | 2004-06-26 | 주식회사 포스코 | 페라이트계 스테인레스강의 산세방법 |
KR100696850B1 (ko) | 2005-10-27 | 2007-03-19 | 주식회사 포스코 | 저크롬 페라이트계 스테인레스강의 고속산세방법 |
-
2009
- 2009-08-21 KR KR1020090077479A patent/KR101290421B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100368207B1 (ko) | 1995-12-11 | 2003-05-09 | 주식회사 포스코 | 오스테나이트계스텐레스냉연소둔강판의전해산세액 |
KR100311792B1 (ko) | 1997-12-11 | 2001-11-22 | 이구택 | 페라이트계 스테인레스강의 산세방법 |
KR100437641B1 (ko) * | 1999-12-20 | 2004-06-26 | 주식회사 포스코 | 페라이트계 스테인레스강의 산세방법 |
KR100696850B1 (ko) | 2005-10-27 | 2007-03-19 | 주식회사 포스코 | 저크롬 페라이트계 스테인레스강의 고속산세방법 |
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