KR100496565B1 - 연성이 우수한 고강도 냉연강판의 제조방법 - Google Patents
연성이 우수한 고강도 냉연강판의 제조방법 Download PDFInfo
- Publication number
- KR100496565B1 KR100496565B1 KR10-2000-0078882A KR20000078882A KR100496565B1 KR 100496565 B1 KR100496565 B1 KR 100496565B1 KR 20000078882 A KR20000078882 A KR 20000078882A KR 100496565 B1 KR100496565 B1 KR 100496565B1
- Authority
- KR
- South Korea
- Prior art keywords
- steel
- steel sheet
- cold rolled
- rolled steel
- strength
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title abstract description 5
- 238000000137 annealing Methods 0.000 claims abstract description 16
- 239000010960 cold rolled steel Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 3
- 230000009466 transformation Effects 0.000 claims abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000005097 cold rolling Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 16
- 239000002244 precipitate Substances 0.000 description 15
- 239000006104 solid solution Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/14—Reduction rate
Landscapes
- 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
발명강 및 비교강의 화학성분중량% | |||||||||
강번 | C | Mn | P | S | Al | N | Cu | Ti | Cu/S 원자비 |
발명강1 | 0.0018 | 0.03 | 0.05 | 0.009 | 0.04 | 0.0029 | 0.11 | 0 | 6.169 |
발명강2 | 0.0021 | 0.05 | 0.04 | 0.008 | 0.03 | 0.0015 | 0.09 | 0 | 5.67 |
발명강3 | 0.0015 | 0.07 | 0.05 | 0.009 | 0.03 | 0.0021 | 0.07 | 0 | 3.92 |
발명강4 | 0.0019 | 0.08 | 0.06 | 0.011 | 0.05 | 0.0011 | 0.13 | 0 | 5.96 |
비교강1 | 0.0023 | 0.25 | 0.06 | 0.009 | 0.04 | 0.0042 | 0.02 | 0 | 1.12 |
비교강2 | 0.0038 | 0.05 | 0.07 | 0.009 | 0.03 | 0.0021 | 0 | 0 | 0 |
비교강3 | 0.0015 | 0.2 | 0.07 | 0.008 | 0.04 | 0.0018 | 0.1 | 0 | 6.3 |
비교강4 | 0.0019 | 0.2 | 0.06 | 0.011 | 0.04 | 0.0031 | 0.25 | 0 | 11.5 |
종래강 | 0.0035 | 0.25 | 0.07 | 0.011 | 0.04 | 0.0032 | 0 | 0.063 | 0 |
본 발명강 및 비교강의 기계적 성질 | |||||
강 번 | 기계적 성질 | 비 고 | |||
항복강도 | 인장강도 | 연신율 | rm 값 | ||
발명강1 | 25.5kg/㎟ | 36.1kg/㎟ | 48.9% | 1.81 | 750℃ 소둔 |
발명강2 | 24.6kg/㎟ | 35.3kg/㎟ | 50.4% | 1.81 | 〃 |
발명강3 | 25.6kg/㎟ | 35.8kg/㎟ | 49.2% | 1.78 | 〃 |
발명강4 | 26.8kg/㎟ | 37.2kg/㎟ | 47.6% | 1.72 | 〃 |
비교강1 | 23.2kg/㎟ | 34.1kg/㎟ | 45.6% | 1.53 | 〃 |
비교강2 | 27.6kg/㎟ | 38.8kg/㎟ | 41.2% | 1.32 | 〃 |
비교강3 | 24.4kg/㎟ | 36.2kg/㎟ | 44.6% | 1.51 | 〃 |
비교강4 | 24.8kg/㎟ | 36.8kg/㎟ | 42.2% | 1.51 | 〃 |
종래강 | 22.5kg/㎟ | 35.8kg/㎟ | 45.2% | 1.65 | 830℃ 소둔 |
Claims (1)
- 중량 %로 C:0.0005-0.003%, Mn:0.1%이하, S:0.003-0.02%, P:0.03-0.07%, Al:0.01-0.1%, N:0.005%이하, Cu:0.05-0.3%, 나머지 Fe로 이루어지고 Cu/S 원자비가 2-10 인 강을 Ar3 변태점 이상의 열간마무리 압연온도에서 열간압연하여 열연강판으로 한다음 50-90%의 압하율로 냉간압연한후 700-880℃ 구간에서 10초-5분간 연속소둔하는 것을 특징으로 하는 연성이 우수한 고강도 냉연강판의 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2000-0078882A KR100496565B1 (ko) | 2000-12-20 | 2000-12-20 | 연성이 우수한 고강도 냉연강판의 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2000-0078882A KR100496565B1 (ko) | 2000-12-20 | 2000-12-20 | 연성이 우수한 고강도 냉연강판의 제조방법 |
Publications (2)
Publication Number | Publication Date |
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KR20020049667A KR20020049667A (ko) | 2002-06-26 |
KR100496565B1 true KR100496565B1 (ko) | 2005-06-23 |
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KR10-2000-0078882A KR100496565B1 (ko) | 2000-12-20 | 2000-12-20 | 연성이 우수한 고강도 냉연강판의 제조방법 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005045085A1 (en) | 2003-11-10 | 2005-05-19 | Posco | Cold rolled steel sheet having aging resistance and superior formability, and process for producing the same |
KR100968623B1 (ko) * | 2008-07-01 | 2010-07-08 | 오영호 | 필기구 |
KR100968624B1 (ko) * | 2008-07-11 | 2010-07-08 | 오영호 | 필기구 |
DE102010012830B4 (de) * | 2010-03-25 | 2017-06-08 | Benteler Automobiltechnik Gmbh | Verfahren zur Herstellung einer Kraftfahrzeugkomponente und Karosseriebauteil |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5677333A (en) * | 1979-11-29 | 1981-06-25 | Kobe Steel Ltd | Production of composite structure type high ductility high strength cold-rolled steel plate |
JPS56119732A (en) * | 1980-01-28 | 1981-09-19 | Sumitomo Metal Ind Ltd | Manufacture of high-strength cold rolled steel plate with superior press formability |
JPS5747832A (en) * | 1980-09-01 | 1982-03-18 | Nippon Steel Corp | Production of high strength cold rolled steel plate of superior deep drawability and working embrittleness resistance |
JPS58185748A (ja) * | 1982-04-23 | 1983-10-29 | Kobe Steel Ltd | 冷間成形性、表面性状のすぐれた高強度鋼板およびその製造法 |
JPH06145891A (ja) * | 1992-11-05 | 1994-05-27 | Kawasaki Steel Corp | 延性と耐遅れ破壊特性に優れた高強度冷延鋼板およびその製造方法 |
KR950018579A (ko) * | 1993-12-24 | 1995-07-22 | 조말수 | 연성이 우수한 초고강도 냉연강판제조방법 |
KR20000043762A (ko) * | 1998-12-29 | 2000-07-15 | 이구택 | 연성이 향상된 초고강도 냉연강판의 제조방법 |
KR20010062901A (ko) * | 1999-12-21 | 2001-07-09 | 이구택 | 연속소둔에 의한 연성이 우수한 고강도 냉연강판의 제조방법 |
-
2000
- 2000-12-20 KR KR10-2000-0078882A patent/KR100496565B1/ko active IP Right Grant
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5677333A (en) * | 1979-11-29 | 1981-06-25 | Kobe Steel Ltd | Production of composite structure type high ductility high strength cold-rolled steel plate |
JPS56119732A (en) * | 1980-01-28 | 1981-09-19 | Sumitomo Metal Ind Ltd | Manufacture of high-strength cold rolled steel plate with superior press formability |
JPS5747832A (en) * | 1980-09-01 | 1982-03-18 | Nippon Steel Corp | Production of high strength cold rolled steel plate of superior deep drawability and working embrittleness resistance |
JPS58185748A (ja) * | 1982-04-23 | 1983-10-29 | Kobe Steel Ltd | 冷間成形性、表面性状のすぐれた高強度鋼板およびその製造法 |
JPH06145891A (ja) * | 1992-11-05 | 1994-05-27 | Kawasaki Steel Corp | 延性と耐遅れ破壊特性に優れた高強度冷延鋼板およびその製造方法 |
KR950018579A (ko) * | 1993-12-24 | 1995-07-22 | 조말수 | 연성이 우수한 초고강도 냉연강판제조방법 |
KR20000043762A (ko) * | 1998-12-29 | 2000-07-15 | 이구택 | 연성이 향상된 초고강도 냉연강판의 제조방법 |
KR20010062901A (ko) * | 1999-12-21 | 2001-07-09 | 이구택 | 연속소둔에 의한 연성이 우수한 고강도 냉연강판의 제조방법 |
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