KR100506391B1 - 드로잉성이 우수한 초심가공용 고강도 냉연강판의 제조방법 - Google Patents
드로잉성이 우수한 초심가공용 고강도 냉연강판의 제조방법 Download PDFInfo
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- KR100506391B1 KR100506391B1 KR10-2000-0076062A KR20000076062A KR100506391B1 KR 100506391 B1 KR100506391 B1 KR 100506391B1 KR 20000076062 A KR20000076062 A KR 20000076062A KR 100506391 B1 KR100506391 B1 KR 100506391B1
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- Prior art keywords
- less
- rolled steel
- cold rolled
- high strength
- steel
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
-
- 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
- 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
-
- 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)
- 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)
- Heat Treatment Of Steel (AREA)
Abstract
Description
구분 | 화 학 성 분 (중량%) | 각 관계식의 계산값 | 비고 | ||||||||
C | Mn | P | N | Ti | Nb | B(ppm) | 식① | 식② | 식③ | ||
1 | 0.0027 | 0.880 | 0.110 | 0.0025 | 0.024 | 0.007 | 9 | 41.8 | 2.2 | 1.0 | 본발명강 |
2 | 0.0021 | 1.020 | 0.091 | 0.0023 | 0.016 | 0.010 | 10 | 42.4 | 1.5 | 1.8 | |
3 | 0.0031 | 0.780 | 0.102 | 0.002 | 0.021 | 0.013 | 8 | 41.9 | 1.8 | 1.5 | |
4 | 0.0025 | 1.150 | 0.087 | 0.0026 | 0.018 | 0.006 | 12 | 42.0 | 1.4 | 0.9 | |
5 | 0.0038 | 0.830 | 0.095 | 0.0028 | 0.043 | - | 7 | - | - | - | 비교강 |
6 | 0.0033 | 0.950 | 0.105 | 0.0022 | 0.049 | - | 5 | - | - | - |
구분 | 냉간압하율(%) | 연속소둔온도(℃) | 인장강도(kg/mm2) | 연신율(%) | r값 | 비고 |
1 | 75.0% | 840 | 42.1 | 35.9 | 2.21 | 본발명강 |
2 | 77.5% | 835 | 41.9 | 36.2 | 2.18 | |
3 | 75.0% | 845 | 41.6 | 37.0 | 2.26 | |
4 | 77.5 | 860 | 42.1 | 36.7 | 2.41 | |
5 | 75.0% | 830 | 41.2 | 37.2 | 1.82 | 비교강 |
6 | 73.0% | 830 | 40.9 | 36.8 | 1.79 |
Claims (1)
- 중량 %로 C:0.004%이하, Si:0.02%이하, Mn:1.2%이하, P:0.03-0.15%, S:0.015%이하, Sol.Al:0.01~0.15%, Ti:0.005-0.040%, Nb:0.002-0.020%, B:0.0001-0.0020%, N:0.002~0.0026%, 잔부:Fe 및 기타 불가피한 불순물로 조성되며, 상기 성분들은 {29.1 + 89.4P(%) + 3.9Mn(%) - 133.8Ti(%) + 157.5Nb(%) + 0.18B(ppm) ≥ 40}의 관계식을 만족하면서, 탄질화물 형성원소인 Ti 및 Nb함량은 각각 {1≤(1/0.65)(Ti-3.43N)/4C ≤2.3}와 {0.8≤(1/0.35)(Nb/7.75C) ≤2.0}의 관계를 만족시키도록 첨가된 강의 슬라브를 재가열 후, 900℃이상의오오스테나이트 단상역에서 마무리압연과 권취한 다음, 73%이상의 냉간압하율과 830℃~875℃의 온도구간에서 연속소둔되어 인장강도 40kg/mm2를 갖는 드로잉성이 우수한 초심가공용 고강도 냉연강판의 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR10-2000-0076062A KR100506391B1 (ko) | 2000-12-13 | 2000-12-13 | 드로잉성이 우수한 초심가공용 고강도 냉연강판의 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR10-2000-0076062A KR100506391B1 (ko) | 2000-12-13 | 2000-12-13 | 드로잉성이 우수한 초심가공용 고강도 냉연강판의 제조방법 |
Publications (2)
Publication Number | Publication Date |
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KR20020047573A KR20020047573A (ko) | 2002-06-22 |
KR100506391B1 true KR100506391B1 (ko) | 2005-08-10 |
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KR10-2000-0076062A KR100506391B1 (ko) | 2000-12-13 | 2000-12-13 | 드로잉성이 우수한 초심가공용 고강도 냉연강판의 제조방법 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4414883B2 (ja) | 2002-06-28 | 2010-02-10 | ポスコ | 成形性及び溶接性に優れた超深絞り用高強度冷延薄鋼板とその製造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR940014849A (ko) * | 1992-12-22 | 1994-07-19 | 박득표 | 고연성 초심가공용 냉간압연 강판의 제조방법 |
JPH06306479A (ja) * | 1993-04-21 | 1994-11-01 | Nippon Steel Corp | 深絞り性の優れた高強度合金化溶融亜鉛めっき冷延鋼板の製造方法 |
JPH07252590A (ja) * | 1994-03-15 | 1995-10-03 | Kawasaki Steel Corp | 強度−延性バランス及び焼付硬化性に優れる深絞り加工用高張力冷延鋼板並びにその製造方法 |
JPH08225854A (ja) * | 1995-02-20 | 1996-09-03 | Nisshin Steel Co Ltd | 深絞り性に優れた高強度冷延鋼板の製造方法 |
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- 2000-12-13 KR KR10-2000-0076062A patent/KR100506391B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR940014849A (ko) * | 1992-12-22 | 1994-07-19 | 박득표 | 고연성 초심가공용 냉간압연 강판의 제조방법 |
JPH06306479A (ja) * | 1993-04-21 | 1994-11-01 | Nippon Steel Corp | 深絞り性の優れた高強度合金化溶融亜鉛めっき冷延鋼板の製造方法 |
JPH07252590A (ja) * | 1994-03-15 | 1995-10-03 | Kawasaki Steel Corp | 強度−延性バランス及び焼付硬化性に優れる深絞り加工用高張力冷延鋼板並びにその製造方法 |
JPH08225854A (ja) * | 1995-02-20 | 1996-09-03 | Nisshin Steel Co Ltd | 深絞り性に優れた高強度冷延鋼板の製造方法 |
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