KR100635074B1 - 조대 석출물에 의한 고강도 고인성 열연강판 제조방법 - Google Patents
조대 석출물에 의한 고강도 고인성 열연강판 제조방법 Download PDFInfo
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- KR100635074B1 KR100635074B1 KR1019990063240A KR19990063240A KR100635074B1 KR 100635074 B1 KR100635074 B1 KR 100635074B1 KR 1019990063240 A KR1019990063240 A KR 1019990063240A KR 19990063240 A KR19990063240 A KR 19990063240A KR 100635074 B1 KR100635074 B1 KR 100635074B1
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- South Korea
- Prior art keywords
- rolling
- temperature
- toughness
- less
- steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 239000002244 precipitate Substances 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 238000003303 reheating Methods 0.000 claims abstract description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 6
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000005098 hot rolling Methods 0.000 abstract description 8
- 238000004804 winding Methods 0.000 abstract description 5
- 229910001566 austenite Inorganic materials 0.000 abstract description 4
- 238000001953 recrystallisation Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000005856 abnormality Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
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
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- 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
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/225—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by hot-rolling
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
사상 | C | Si | Mn | P | S | Nb | V | Ti | Mo | Ni | N | Al | CvE |
발명강1 | 0.07 | 0.2 | 1.5 | 150 | 20 | 0.05 | 0.05 | 0.02 | 0.15 | 0.2 | 40 | 0.03 | 122 |
발명강2 | 0.07 | 0.2 | 1.5 | 150 | 30 | 0.05 | 0.05 | 0.02 | 0.15 | 0.3 | 40 | 0.03 | 196 |
발명강3 | 0.07 | 0.2 | 1.5 | 150 | 30 | 0.05 | 0.05 | 0.02 | 0.15 | 0.3 | 60 | 0.03 | 136 |
발명강4 | 0.07 | 0.2 | 1.5 | 150 | 20 | 0.05 | 0.05 | 0.02 | 0.3 | 40 | 0.03 | 100 | |
비교강1 | 0.07 | 0.2 | 1.5 | 150 | 20 | 0.05 | 0.05 | 0.3 | 40 | 0.03 | 53 | ||
비교강2 | 0.07 | 0.2 | 1.5 | 150 | 20 | 0.05 | 0.05 | 0.3 | 100 | 0.03 | 63 | ||
비교강3 | 0.07 | 0.2 | 1.5 | 150 | 50 | 0.05 | 0.05 | 0.3 | 40 | 0.03 | 47 | ||
비교강4 | 0.07 | 0.2 | 1.5 | 150 | 20 | 0.05 | 0.02 | 0.02 | 0.3 | 40 | 0.03 | 61 | |
비교강5 | 0.07 | 0.2 | 1.5 | 150 | 20 | 0.05 | 0.05 | 0.02 | 40 | 0.03 | 80 | ||
비교강6 | 0.07 | 0.2 | 1.5 | 150 | 20 | 0.05 | 0.08 | 0.02 | 40 | 0.03 | 73 | ||
비교강7 | 0.07 | 0.2 | 1.5 | 150 | 20 | 0.05 | 0.03 | 0.02 | 0.1 | 0.3 | 40 | 0.03 | 130 |
비교강8 | 0.07 | 0.2 | 1.5 | 100 | 20 | 0.02 | 0.02 | 0.25 | 0.3 | 40 | 0.03 | 111 | |
비교강9 | 0.07 | 0.2 | 1.59 | 180 | 10 | 0.06 | 0.25 | 40 | 0.03 | 37 | |||
비교강10 | 0.07 | 0.2 | 1.5 | 150 | 30 | 0.05 | 0.05 | 0.02 | 0.15 | 0.3 | 100 | 0.03 | 136 |
비교강11 | 0.07 | 0.2 | 1.5 | 150 | 30 | 0.05 | 0.05 | 0.02 | 0.15 | 0.3 | 40 | 0.03 | 63 |
비교강12 | 0.07 | 0.2 | 1.5 | 150 | 30 | 0.05 | 0.05 | 0.02 | 0.15 | 0.3 | 40 | 0.03 | 72 |
비교강13 | 0.07 | 0.2 | 1.5 | 150 | 30 | 0.05 | 0.05 | 0.02 | 0.15 | 0.3 | 100 | 0.03 | 205 |
비교강14 | 0.07 | 0.2 | 1.5 | 150 | 30 | 0.05 | 0.05 | 0.02 | 0.15 | 0.3 | 100 | 0.03 | 67 |
비교강14 | 0.07 | 0.2 | 1.5 | 150 | 30 | 0.05 | 0.05 | 0.02 | 0.15 | 0.3 | 60 | 0.03 | 28 |
Claims (1)
- 항복강도 56kgf/㎟이상의 고강도 고인성 강재를 제조하는 방법에 있어서,성분계의 구성을 중량%로 C : 0.05~0.09%, Si : 0.15~0.25%, Mn : 1.4~1.7%, Mo : 0.2~0.35%, Ni : 0.1~0.3%, Nb : 0.03~0.05%, V : 0.03~0.05%, Ti : 0.015~0.03%, N : 0.004~ 0.01%, S : 0.003% 이하 P : 0.02% 이하, 나머지 Fe 및 기타 불가피한 불순물로 하고, 슬라브 재가열온도 1150~1200℃, 조압연 종료온도 960℃이하, 마무리 압연 종료온도 840~790℃로 하여 압연하며, 사상압연시 압하율을 60% 이상으로 하는 것을 특징으로 하는 조대석출물에 의한 고강도 고인성 열연강판 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019990063240A KR100635074B1 (ko) | 1999-12-28 | 1999-12-28 | 조대 석출물에 의한 고강도 고인성 열연강판 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019990063240A KR100635074B1 (ko) | 1999-12-28 | 1999-12-28 | 조대 석출물에 의한 고강도 고인성 열연강판 제조방법 |
Publications (2)
Publication Number | Publication Date |
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KR20010060798A KR20010060798A (ko) | 2001-07-07 |
KR100635074B1 true KR100635074B1 (ko) | 2006-10-16 |
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KR1019990063240A KR100635074B1 (ko) | 1999-12-28 | 1999-12-28 | 조대 석출물에 의한 고강도 고인성 열연강판 제조방법 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100496563B1 (ko) * | 2000-12-23 | 2005-06-23 | 주식회사 포스코 | 연속식 열간압연에 의한 저항복비형 고인성 후물강판 제조방법 |
KR20030021965A (ko) * | 2001-09-10 | 2003-03-15 | 주식회사 포스코 | 극저온 충격인성이 우수한 라인파이프용 열연강판 및 그제조방법 |
KR100711481B1 (ko) * | 2005-12-26 | 2007-04-24 | 주식회사 포스코 | 석출강화능이 우수한 자동차용 열연강판의 제조방법 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54128927A (en) * | 1978-03-31 | 1979-10-05 | Sumitomo Metal Ind Ltd | Manufacture of high strength steel pipe joint with superior toughness |
JPH05295434A (ja) * | 1992-04-20 | 1993-11-09 | Nippon Steel Corp | 耐水素誘起割れ性,耐硫化物応力腐食割れ性および低温靱性に優れた高張力鋼板の製造方法 |
JPH0776751A (ja) * | 1993-09-10 | 1995-03-20 | Nippon Steel Corp | 高靱性高強度鋼用鋳片及びその鋳片による圧延形鋼の製造方法 |
JPH08319537A (ja) * | 1995-03-20 | 1996-12-03 | Nippon Steel Corp | 高強度高靱性制振合金及びその製造方法 |
JPH11140580A (ja) * | 1997-11-04 | 1999-05-25 | Nippon Steel Corp | 低温靱性に優れた高強度鋼用の連続鋳造鋳片およびその製造法、および低温靱性に優れた高強度鋼 |
KR19990042047A (ko) * | 1997-11-25 | 1999-06-15 | 이구택 | 강도 및 저온 충격인성이 우수한 500㎫급 고장력 후판의 제조방법 |
-
1999
- 1999-12-28 KR KR1019990063240A patent/KR100635074B1/ko not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54128927A (en) * | 1978-03-31 | 1979-10-05 | Sumitomo Metal Ind Ltd | Manufacture of high strength steel pipe joint with superior toughness |
JPH05295434A (ja) * | 1992-04-20 | 1993-11-09 | Nippon Steel Corp | 耐水素誘起割れ性,耐硫化物応力腐食割れ性および低温靱性に優れた高張力鋼板の製造方法 |
JPH0776751A (ja) * | 1993-09-10 | 1995-03-20 | Nippon Steel Corp | 高靱性高強度鋼用鋳片及びその鋳片による圧延形鋼の製造方法 |
JPH08319537A (ja) * | 1995-03-20 | 1996-12-03 | Nippon Steel Corp | 高強度高靱性制振合金及びその製造方法 |
JPH11140580A (ja) * | 1997-11-04 | 1999-05-25 | Nippon Steel Corp | 低温靱性に優れた高強度鋼用の連続鋳造鋳片およびその製造法、および低温靱性に優れた高強度鋼 |
KR19990042047A (ko) * | 1997-11-25 | 1999-06-15 | 이구택 | 강도 및 저온 충격인성이 우수한 500㎫급 고장력 후판의 제조방법 |
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KR20010060798A (ko) | 2001-07-07 |
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