KR20030052248A - 가공성 및 내2차가공취성이 우수한 고강도 냉연강판의제조방법 - Google Patents
가공성 및 내2차가공취성이 우수한 고강도 냉연강판의제조방법 Download PDFInfo
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- KR20030052248A KR20030052248A KR1020010073938A KR20010073938A KR20030052248A KR 20030052248 A KR20030052248 A KR 20030052248A KR 1020010073938 A KR1020010073938 A KR 1020010073938A KR 20010073938 A KR20010073938 A KR 20010073938A KR 20030052248 A KR20030052248 A KR 20030052248A
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- steel
- cold rolled
- rolled steel
- steel sheet
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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
- 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
- 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
- C21D8/0447—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 heat treatment
- C21D8/0452—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 heat treatment with application of tension
-
- 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
- C21D8/0447—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 heat treatment
- C21D8/0473—Final recrystallisation annealing
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials 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
강종 | 화학조성(중량%) | |||||||||
C | Mn | S | Sol.Al | N | Ti | Nb | Mo | B | ||
발명강 | 1 | 0.0012 | 0.88 | 0.003 | 0.12 | 0.0017 | 0.022 | 0.015 | - | 0.001 |
2 | 0.0020 | 0.87 | 0.003 | 0.13 | 0.0017 | 0.025 | 0.010 | - | 0.001 | |
3 | 0.0035 | 0.87 | 0.003 | 0.12 | 0.0021 | 0.035 | 0.005 | - | 0.001 | |
4 | 0.0019 | 1.02 | 0.003 | 0.15 | 0.0026 | 0.027 | 0.005 | - | 0.001 | |
5 | 0.0019 | 1.56 | 0.004 | 0.16 | 0.0021 | 0.036 | 0.003 | - | 0.001 | |
6 | 0.0022 | 1.83 | 0.004 | 0.16 | 0.0029 | 0.035 | 0.003 | - | 0.001 | |
7 | 0.0020 | 0.85 | 0.003 | 0.12 | 0.0016 | 0.045 | - | - | 0.001 | |
8 | 0.0021 | 0.86 | 0.003 | 0.13 | 0.0015 | 0.068 | - | - | 0.001 | |
9 | 0.0018 | 0.90 | 0.003 | 0.15 | 0.0016 | 0.025 | 0.035 | - | 0.001 | |
10 | 0.0017 | 0.83 | 0.003 | 0.14 | 0.0019 | 0.026 | 0.056 | - | 0.001 | |
11 | 0.0019 | 0.89 | 0.003 | 0.13 | 0.0020 | 0.042 | - | 0.04 | 0.001 | |
12 | 0.0020 | 0.90 | 0.003 | 0.13 | 0.0019 | 0.035 | 0.005 | 0.05 | 0.001 | |
비교강 | 13 | 0.0065 | 0.90 | 0.003 | 0.15 | 0.0020 | 0.052 | 0.010 | - | 0.001 |
14 | 0.0020 | 2.12 | 0.003 | 0.12 | 0.0019 | 0.030 | 0.010 | - | 0.001 | |
15 | 0.0019 | 0.89 | 0.012 | 0.13 | 0.0021 | 0.040 | 0.010 | - | 0.001 | |
16 | 0.0022 | 0.91 | 0.004 | 0.04 | 0.0020 | 0.029 | 0.010 | - | 0.001 | |
17 | 0.0024 | 0.85 | 0.004 | 0.15 | 0.0022 | 0.030 | 0.010 | - | - |
시편 No. | 열연권취온도(℃) | 냉간압하율(%) | 소둔온도(℃) | 기계적 성질 | 내2차가공취성(BBTT,℃) | 강종 | ||||
Yp(kg/mm2) | TS(kg/mm2) | El(%) | r | |||||||
발명재 | 1 | 680 | 77 | 840 | 17.7 | 33.2 | 45 | 2.36 | -65 | 발명강 1 |
2 | " | " | " | 18.2 | 34.6 | 43 | 2.29 | -70 | 발명강 2 | |
3 | " | " | " | 20.1 | 36.1 | 42 | 1.95 | -70 | 발명강 3 | |
4 | " | " | " | 22.0 | 37.5 | 42 | 2.15 | -65 | 발명강 4 | |
5 | " | " | " | 23.4 | 40.5 | 40 | 2.07 | -65 | 발명강 5 | |
6 | " | " | " | 24.7 | 42.9 | 37 | 1.95 | -60 | 발명강 6 | |
7 | " | " | " | 17.5 | 33.5 | 46 | 2.31 | -65 | 발명강 7 | |
8 | " | " | " | 18.1 | 33.0 | 44 | 2.42 | -65 | 발명강 8 | |
9 | " | " | " | 21.5 | 37.0 | 41 | 2.04 | -70 | 발명강 9 | |
10 | " | " | " | 23.6 | 38.9 | 39 | 1.95 | -75 | 발명강10 | |
11 | " | " | " | 19.4 | 34.5 | 45 | 2.18 | -70 | 발명강11 | |
12 | " | " | " | 20.7 | 45.8 | 43 | 2.25 | -75 | 발명강12 | |
비교재 | 13 | " | " | " | 23.5 | 37.6 | 38 | 1.78 | -70 | 비교강13 |
14 | " | " | " | 27.0 | 45.8 | 33 | 1.64 | -50 | 비교강14 | |
15 | " | " | " | 18.6 | 34.2 | 40 | 1.88 | -55 | 비교강15 | |
16 | " | " | " | 20.8 | 33.5 | 41 | 1.85 | -55 | 비교강16 | |
17 | " | " | " | 16.5 | 31.7 | 45 | 2.07 | -40 | 비교강17 | |
18 | 560 | " | " | 20.7 | 35.0 | 40 | 1.83 | -60 | 발명강 2 | |
19 | 750 | " | " | 16.7 | 32.1 | 43 | 1.95 | -55 | 발명강 2 | |
20 | 680 | 50 | " | 16.5 | 32.5 | 45 | 1.75 | -50 | 발명강 2 | |
21 | " | 77 | 900 | 21.8 | 36.8 | 39 | 1.66 | -40 | 발명강 2 |
Claims (2)
- 중량%로 C:0.0005-0.005%, Mn:0.5-2.0%, S:0.005%이하, N:0.003%이하, 산가용Al:0.1-0.2%, B:0.0005-0.003%을 함유한 강에 Ti:0.01-0.10% 및 Nb:0.001-0.10% 중 1종 또는 2종이 첨가되고, 잔부 Fe 및 불가파한 불순물로 조성되는 강을 열간마무리압연이 Ar3점 이상의 온도에서 종료되는 조건으로 열간압연을 행한 후, 620-720℃에서 권취한 다음, 60-90%압하율로 냉간압연하고 연속소둔방식에 의해 780-880℃의 온도에서 10초-180초 동안 재결정 소둔을 행하는 가공성 및 내2차가공취성이 우수한 냉연강판의 제조방법
- 제1항에 있어서, 상기 강에 0.02-0.2중량%의 Mo이 추가로 첨가되는 것을 특징으로 하는 가공성 및 내2차가공취성이 우수한 냉연강판의 제조방법
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KR10-2001-0073938A KR100530057B1 (ko) | 2001-11-26 | 2001-11-26 | 가공성 및 내2차가공취성이 우수한 고강도 냉연강판의제조방법 |
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KR10-2001-0073938A KR100530057B1 (ko) | 2001-11-26 | 2001-11-26 | 가공성 및 내2차가공취성이 우수한 고강도 냉연강판의제조방법 |
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KR20030052248A true KR20030052248A (ko) | 2003-06-27 |
KR100530057B1 KR100530057B1 (ko) | 2005-11-22 |
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KR100685030B1 (ko) * | 2005-07-08 | 2007-02-20 | 주식회사 포스코 | 내2차가공취성, 피로특성 및 도금특성이 우수한 심가공용박강판 및 그 제조방법 |
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KR20040037520A (ko) * | 2002-10-29 | 2004-05-07 | 주식회사 포스코 | 성형성 및 도금밀착성이 우수한 고강도 합금화 용융 아연도금강판의 제조방법 |
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JPS59177327A (ja) * | 1983-03-25 | 1984-10-08 | Sumitomo Metal Ind Ltd | プレス加工用冷延鋼板の製造法 |
JPH0756055B2 (ja) * | 1989-11-29 | 1995-06-14 | 新日本製鐵株式会社 | 加工性の極めて優れた冷延鋼板の高効率な製造方法 |
JPH07103423B2 (ja) * | 1990-06-19 | 1995-11-08 | 新日本製鐵株式会社 | 加工性の極めて優れた冷延鋼板の高効率な製造方法 |
JPH04120217A (ja) * | 1990-09-11 | 1992-04-21 | Nippon Steel Corp | 焼付硬化性に優れた冷延鋼板の製造方法 |
JPH10330844A (ja) * | 1997-05-28 | 1998-12-15 | Nippon Steel Corp | 成形性に優れた冷延鋼板の製造方法 |
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KR100685030B1 (ko) * | 2005-07-08 | 2007-02-20 | 주식회사 포스코 | 내2차가공취성, 피로특성 및 도금특성이 우수한 심가공용박강판 및 그 제조방법 |
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