KR100467719B1 - 리징 저항성 및 스피닝 가공성이 우수한 페라이트계스테인리스강 및 그 제조 방법 - Google Patents
리징 저항성 및 스피닝 가공성이 우수한 페라이트계스테인리스강 및 그 제조 방법 Download PDFInfo
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- KR100467719B1 KR100467719B1 KR10-2000-0074743A KR20000074743A KR100467719B1 KR 100467719 B1 KR100467719 B1 KR 100467719B1 KR 20000074743 A KR20000074743 A KR 20000074743A KR 100467719 B1 KR100467719 B1 KR 100467719B1
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- 238000009987 spinning Methods 0.000 title claims abstract description 30
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title description 4
- 238000000137 annealing Methods 0.000 claims abstract description 37
- 238000005097 cold rolling Methods 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000005098 hot rolling Methods 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 11
- 229910052738 indium Inorganic materials 0.000 claims 1
- 102000016550 Complement Factor H Human genes 0.000 abstract description 4
- 108010053085 Complement Factor H Proteins 0.000 abstract description 4
- 238000002386 leaching Methods 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000001953 recrystallisation Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000005121 nitriding Methods 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- 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
- C21D8/0221—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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- 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
- C21D2211/005—Ferrite
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
구분 | No | C | Si | Mn | P | S | Cr | Mo | Cu | Al | N |
발명재 | 1 | 0.03 | 0.24 | 0.51 | 0.02 | 0.01 | 16.15 | 0.03 | 0.03 | 0.003 | 0.03 |
2 | 0.030 | 0.25 | 0.4 | 0.02 | 0.02 | 16.19 | 0.03 | 0.04 | 0.003 | 0.03 | |
비교재 | 3 | 0.041 | 0.39 | 0.465 | 0.19 | 0.019 | 16.50 | 0.013 | 0.031 | 0.004 | 0.04 |
4 | 0.037 | 0.267 | 0.441 | 0.023 | 0.006 | 16.17 | 0.011 | 0.031 | 0.005 | 0.034 | |
5 | 0.047 | 0.39 | 0.39 | 0.021 | 0.002 | 8.16 | 0.01 | 0.020 | 0.003 | 0.0488 | |
6 | 0.050 | 0.31 | 0.27 | 0.018 | 0.01 | 16.58 | 0.05 | 0.01 | 0.005 | 0.038 | |
7 | 0.061 | 0.3 | 0.61 | 0.025 | 0.002 | 16.4 | 0.03 | 0.04 | 0.004 | 0.03 |
구분 | No | 4(C%+N%)+Si% | r Max(%) | Acl(℃) | 이론 Y.S (Kg/㎟) |
발명재 | 1 | 0.48(%) | 32.7 | 811.7 | 30.71 |
2 | 0.49(%) | 35.9 | 803.9 | 30.66 | |
비교재 | 3 | 0.714(%) | 31.2 | 839.2 | 34.34 |
4 | 0.551(%) | 31.1 | 825.5 | 32.21 | |
5 | 0.7732(%) | 40.3 | 831.7 | 35.51 | |
6 | 0.662(%) | 28.2 | 864.5 | 34.04 | |
7 | 0.664(%) | 43.3 | 795.7 | 34.86 |
구분 | No | 경도 (Hv) | 항복강도(Kg/㎟) | 연신율 El(%) | 리징 높이(㎛) |
발명재 | 1 | 142.7 | 31.2 | 28.8 | 21.9 |
2 | 143.0 | 31.3 | 28.7 | 22.0 | |
비교재 | 3 | 158.9 | 34.0 | 26.5 | 23.1 |
4 | 151.1 | 33.5 | 28.5 | 22.6 | |
5 | 158.7 | 34.5 | 26.6 | 19.7 | |
6 | 155.4 | 33.4 | 25.7 | 25.6 | |
7 | 156.2 | 34.3 | 28.0 | 28.1 |
구분 | No | 스피닝후형상동결성 | 스피닝시 크랙발생율 (%) | 연마후 리징 흔적 잔존율($) | 스피닝 가공후 커링성 | 냉간압연조건 |
발명재 | 1 | 양호 | 0 | 0 | 양호 | 단압연 |
2 | 양호 | 0 | 0 | 양호 | ″ | |
비교재 | 3 | 불량 | 50 | 0 | 양호 | ″ |
4 | 불량 | 30 | 0 | 양호 | ″ | |
5 | 불량 | 20 | 0 | 양호 | ″ | |
6 | 불량 | 100 | 100 | 양호 | ″ | |
7 | 불량 | 25 | 100 | 불량 | 재압연 |
시편 | 냉연소둔 온도(℃) | 820 | 830 | 840 | 850 | 870 |
발명강 no.1 | 연신율(%) | 29 | 31 | 31.5 | 32 | 33 |
Claims (2)
- 페라이트계 스테인리스강에 있어서,중량%로 C: 0.035% 이하, Si: 0.3% 이하, Mn: 1% 이하, P: 0.035% 이하, S: 0.03% 이하, Cr: 15 ~ 17%, Mo: 0.03% 이하, N: 0.035% 이하, Cu: 0.4% 이하, Al: 0.005% 이하, 나머지 Fe 및 불가피하게 첨가되는 불순물로 조성되고,강도인자(H)는 0.5% 이하, 소재의max은 32% 이상, Ac1 온도는 820℃ 이하, 이론항복강도(YS)는 32(Kg/㎟) 이하이고, 여기에서H(%) = 4(C%+N%)+Si%;Max(%) = 420C + 470N + 10Mn + 18Cu - 11.5Si - 11.5Cr - 12Mo - 52Al + 180;Ac1(℃) = (Cr + 1.72Mo + 2.09Si + 2.14Al - 7.14C - 8N - 1.89Mn - 1.02Cu) x 35 + 310;YS(Kg/㎟) = 47.6 + 92.4Si + 11Mn + 801P + 9.48Cr + 35.1Al + 939(C + N)/9.8;인 것을 특징으로 하는 연질이며, 리징성 및 스피닝 가공성이 우수한 페라이트계 스테인리스강.
- 중량%로 C: 0.035% 이하, Si: 0.3% 이하, Mn: 1% 이하, P: 0.035% 이하, S: 0.03% 이하, Cr: 15 ~ 17%, Mo: 0.03% 이하, N: 0.035% 이하, Cu: 0.4% 이하, Al: 0.005% 이하, 나머지 Fe 및 불가피하게 첨가되는 불순물로 조성되고, 강도인자(H)는 0.5% 이하, 소재의max은 32% 이상, Ac1 온도는 820℃ 이하, 이론항복강도(YS)는 32(Kg/㎟) 이하인 페라이트계 스테인리스강을 제조하는 방법에 있어서,상기 조성을 갖는 슬라브를 1200 ~ 1250℃로 가열하는 단계와;마무리 압연온도 950℃ 이하의 조건에서 열간압연하는 단계와;750℃ 이하의 온도에서 권취하여 열연코일을 준비하는 단계와;상기 열연코일을 830 ~ 850℃에서 4시간 이상 상소둔하는 단계와;상기 열연소둔판을 냉간압연율 70 ~ 95%로 1회 냉간압연하는 단계와;냉간압연후 840 ~ 870℃ 범위에서 냉간압연 소둔처리하는 것을 특징으로 하는 연질이며, 리징성 및 스피닝 가공성이 우수한 페라이트계 스테인리스강 제조 방법.
Priority Applications (1)
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KR10-2000-0074743A KR100467719B1 (ko) | 2000-12-08 | 2000-12-08 | 리징 저항성 및 스피닝 가공성이 우수한 페라이트계스테인리스강 및 그 제조 방법 |
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KR10-2000-0074743A KR100467719B1 (ko) | 2000-12-08 | 2000-12-08 | 리징 저항성 및 스피닝 가공성이 우수한 페라이트계스테인리스강 및 그 제조 방법 |
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KR20020045322A KR20020045322A (ko) | 2002-06-19 |
KR100467719B1 true KR100467719B1 (ko) | 2005-01-24 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220081556A (ko) * | 2020-12-09 | 2022-06-16 | 주식회사 포스코 | 내리징성이 향상된 페라이트계 스테인리스강 및 그 제조방법 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20090052954A (ko) * | 2007-11-22 | 2009-05-27 | 주식회사 포스코 | 내식성 및 장출성형성이 우수한 저크롬 페라이트계스테인리스강 및 그 제조방법 |
CN103857812B (zh) * | 2011-12-09 | 2017-05-31 | 新日铁住金不锈钢株式会社 | 冷裂纹性优异的铁素体系不锈钢热轧钢板以及其制造方法 |
JP6071608B2 (ja) | 2012-03-09 | 2017-02-01 | 新日鐵住金ステンレス株式会社 | 耐酸化性に優れたフェライト系ステンレス鋼板 |
EP2980251B1 (en) | 2013-03-27 | 2017-12-13 | Nippon Steel & Sumikin Stainless Steel Corporation | Hot-rolled ferritic stainless-steel plate, process for producing same, and steel strip |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0741854A (ja) * | 1993-07-27 | 1995-02-10 | Nippon Steel Corp | 靱性に優れたフェライト単相ステンレス熱延鋼板の製造方法 |
JPH07268461A (ja) * | 1994-03-29 | 1995-10-17 | Kawasaki Steel Corp | 面内異方性が小さいフェライト系ステンレス鋼帯の製造方法 |
JPH08134550A (ja) * | 1994-11-14 | 1996-05-28 | Sumitomo Metal Ind Ltd | フェライト系ステンレス鋼板の製造方法 |
JPH09111354A (ja) * | 1995-10-13 | 1997-04-28 | Sumitomo Metal Ind Ltd | フェライト系ステンレス鋼板の製造方法 |
KR20010025913A (ko) * | 1999-09-01 | 2001-04-06 | 이구택 | 성형성 및 리징성이 우수한 페라이트계 스테인레스강의 제조방법 |
-
2000
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0741854A (ja) * | 1993-07-27 | 1995-02-10 | Nippon Steel Corp | 靱性に優れたフェライト単相ステンレス熱延鋼板の製造方法 |
JPH07268461A (ja) * | 1994-03-29 | 1995-10-17 | Kawasaki Steel Corp | 面内異方性が小さいフェライト系ステンレス鋼帯の製造方法 |
JPH08134550A (ja) * | 1994-11-14 | 1996-05-28 | Sumitomo Metal Ind Ltd | フェライト系ステンレス鋼板の製造方法 |
JPH09111354A (ja) * | 1995-10-13 | 1997-04-28 | Sumitomo Metal Ind Ltd | フェライト系ステンレス鋼板の製造方法 |
KR20010025913A (ko) * | 1999-09-01 | 2001-04-06 | 이구택 | 성형성 및 리징성이 우수한 페라이트계 스테인레스강의 제조방법 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220081556A (ko) * | 2020-12-09 | 2022-06-16 | 주식회사 포스코 | 내리징성이 향상된 페라이트계 스테인리스강 및 그 제조방법 |
KR102497439B1 (ko) | 2020-12-09 | 2023-02-08 | 주식회사 포스코 | 내리징성이 향상된 페라이트계 스테인리스강 및 그 제조방법 |
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