KR100496532B1 - 성형성이 우수한 소부경화형 냉연강판 및 그 제조방법 - Google Patents
성형성이 우수한 소부경화형 냉연강판 및 그 제조방법 Download PDFInfo
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- KR100496532B1 KR100496532B1 KR10-2000-0074121A KR20000074121A KR100496532B1 KR 100496532 B1 KR100496532 B1 KR 100496532B1 KR 20000074121 A KR20000074121 A KR 20000074121A KR 100496532 B1 KR100496532 B1 KR 100496532B1
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- South Korea
- Prior art keywords
- hardening
- less
- rolled steel
- cold rolled
- steel sheet
- Prior art date
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- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 238000000137 annealing Methods 0.000 claims abstract description 32
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000005097 cold rolling Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 15
- 239000002244 precipitate Substances 0.000 description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- 239000006104 solid solution Substances 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000006866 deterioration Effects 0.000 description 11
- 230000032683 aging Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005098 hot rolling Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- 229910052758 niobium Inorganic materials 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 229910000655 Killed steel Inorganic materials 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000009036 growth inhibition Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005297 material degradation process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 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
- 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
- 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
-
- 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
- B21B2001/221—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 cold-rolling
-
- 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
- B21B2001/228—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 skin pass rolling or temper rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
-
- 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
Abstract
Description
Claims (2)
- 중량%로, C : 0.0018~0.0025%, Si : 0.02% 이하, Mn : 0.07~0.2%, P : 0.05~0.08%, S : 0.008% 이하, Sol.Al : 0.02~0.06%, N : 0.0030% 이하, Nb : 0.008~0.012%, 잔부 Fe 및 기타 불가피한 불순물로 조성되는 강을 1200℃이상에서 균질화 열처리하고 900~950℃의 온도범위에서 마무리 열간압연한 후 700~750℃의 온도범위에서 권취하고, 75~80%의 압연율로 냉간압연한 다음 850~870℃의 온도범위에서 연속소둔하고, 1.3~2.0%의 압하율로 조질압연하는 것을 포함하여 이루어지는 성형성이 우수한 고강도 소부경화형 냉연강판의 제조방법
- 중량%로, C : 0.0018~0.0025%, Si : 0.02% 이하, Mn : 0.07~0.2%, P : 0.05~0.08%, S : 0.008% 이하, Sol.Al : 0.02~0.06%, N : 0.0030% 이하, Nb : 0.008~0.012%, 잔부 Fe 및 기타 불가피한 불순물로 조성되고, 소부경화량이 3~6kgf/mm2, 평균r치가 2.0이상이며, 그리고 연신율이 38%이상인 성형성이 우수한 고강도 소부경화형 냉연강판
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2000-0074121A KR100496532B1 (ko) | 2000-12-07 | 2000-12-07 | 성형성이 우수한 소부경화형 냉연강판 및 그 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2000-0074121A KR100496532B1 (ko) | 2000-12-07 | 2000-12-07 | 성형성이 우수한 소부경화형 냉연강판 및 그 제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20020044880A KR20020044880A (ko) | 2002-06-19 |
KR100496532B1 true KR100496532B1 (ko) | 2005-06-22 |
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KR10-2000-0074121A KR100496532B1 (ko) | 2000-12-07 | 2000-12-07 | 성형성이 우수한 소부경화형 냉연강판 및 그 제조방법 |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05171351A (ja) * | 1991-12-25 | 1993-07-09 | Nkk Corp | 焼付硬化性に優れた非時効性深絞り用冷延鋼板とその製造方法 |
KR950028834A (ko) * | 1994-04-30 | 1995-11-22 | 김만제 | 성형성이 우수한 소부경화형 냉연강판의 제조방법 |
KR960021198A (ko) * | 1994-12-22 | 1996-07-18 | 김만제 | 우수한 성형성과 소부경화성을 가진 냉연강판 제조방법 |
KR970043289A (ko) * | 1995-12-30 | 1997-07-26 | 김종진 | 성형성과 소부경화성이 우수한 유기피복형 냉연강판의 제조방법 |
KR19990034162A (ko) * | 1997-10-28 | 1999-05-15 | 이구택 | 성형성이 우수한 소부경화형 저탄소 냉연강판의 제조방법 |
KR20000015389A (ko) * | 1998-08-28 | 2000-03-15 | 이구택 | 성형성과 소부경화성이 우수한 연질냉연강판 제조방법 |
KR20000038789A (ko) * | 1998-12-09 | 2000-07-05 | 이구택 | 성형성이 우수한 고강도냉연강판의 제조방법 |
KR20000038942A (ko) * | 1998-12-10 | 2000-07-05 | 이구택 | 성형성이 우수한 고강도 냉연강판의 제조방법 |
KR20020040214A (ko) * | 2000-11-24 | 2002-05-30 | 이구택 | 고강도 소부경화형 냉연강판 및 그 제조방법 |
-
2000
- 2000-12-07 KR KR10-2000-0074121A patent/KR100496532B1/ko active IP Right Grant
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05171351A (ja) * | 1991-12-25 | 1993-07-09 | Nkk Corp | 焼付硬化性に優れた非時効性深絞り用冷延鋼板とその製造方法 |
KR950028834A (ko) * | 1994-04-30 | 1995-11-22 | 김만제 | 성형성이 우수한 소부경화형 냉연강판의 제조방법 |
KR960021198A (ko) * | 1994-12-22 | 1996-07-18 | 김만제 | 우수한 성형성과 소부경화성을 가진 냉연강판 제조방법 |
KR970043289A (ko) * | 1995-12-30 | 1997-07-26 | 김종진 | 성형성과 소부경화성이 우수한 유기피복형 냉연강판의 제조방법 |
KR100256371B1 (ko) * | 1995-12-30 | 2000-05-15 | 이구택 | 성형성과 소부경화성이 우수한 유기피복형 냉연강판의 제조방법 |
KR19990034162A (ko) * | 1997-10-28 | 1999-05-15 | 이구택 | 성형성이 우수한 소부경화형 저탄소 냉연강판의 제조방법 |
KR20000015389A (ko) * | 1998-08-28 | 2000-03-15 | 이구택 | 성형성과 소부경화성이 우수한 연질냉연강판 제조방법 |
KR20000038789A (ko) * | 1998-12-09 | 2000-07-05 | 이구택 | 성형성이 우수한 고강도냉연강판의 제조방법 |
KR20000038942A (ko) * | 1998-12-10 | 2000-07-05 | 이구택 | 성형성이 우수한 고강도 냉연강판의 제조방법 |
KR20020040214A (ko) * | 2000-11-24 | 2002-05-30 | 이구택 | 고강도 소부경화형 냉연강판 및 그 제조방법 |
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KR20020044880A (ko) | 2002-06-19 |
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