KR100362664B1 - 미니밀에 의한 일반구조용 열연강판의 제조방법8 - Google Patents
미니밀에 의한 일반구조용 열연강판의 제조방법8 Download PDFInfo
- Publication number
- KR100362664B1 KR100362664B1 KR10-1998-0055317A KR19980055317A KR100362664B1 KR 100362664 B1 KR100362664 B1 KR 100362664B1 KR 19980055317 A KR19980055317 A KR 19980055317A KR 100362664 B1 KR100362664 B1 KR 100362664B1
- Authority
- KR
- South Korea
- Prior art keywords
- less
- hot rolled
- mini
- hot
- mill
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 70
- 239000010959 steel Substances 0.000 title claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 41
- 230000008569 process Effects 0.000 claims abstract description 31
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 20
- 229910052718 tin Inorganic materials 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 238000007670 refining Methods 0.000 claims abstract description 6
- 239000003923 scrap metal Substances 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 4
- 239000002253 acid Substances 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 26
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 239000011572 manganese Substances 0.000 description 10
- 239000010949 copper Substances 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 238000009749 continuous casting Methods 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 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
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe 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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
-
- 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
- B21B1/46—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 metal immediately subsequent to continuous casting
-
- 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
- C22C38/002—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
- C22C38/02—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
-
- 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
Abstract
Description
실시예 | 화학조성(중량%) | |||||
C | Mn | P | S | sol. Al | Cu | |
발명강1 | 0.180 | 0.30 | 0.020 | 0.010 | 0.040 | 0.20 |
발명강2 | 0.154 | 0.26 | 0.012 | 0.007 | 0.060 | 0.06 |
발명강3 | 0.158 | 0.26 | 0.014 | 0.002 | 0.037 | 0.03 |
비교강1 | 0.06 | 0.85 | 0.02 | 0.015 | 0.02 | 0.20 |
비교강2 | 0.054 | 0.78 | 0.015 | 0.009 | 0.035 | 0.07 |
실시예 | 강종 | 제품두께(mm) | 열연조건(℃) | 재질특성 | ||
마무리압연온도 | 권취온도 | 인장강도(kg/㎠) | 연신율(%) | |||
발명재1 | 발명강1 | 8.0 | 838 | 680 | 49.0 | 24 |
발명재2 | 발명강2 | 8.0 | 862 | 684 | 47.6 | 23 |
발명재3 | 발명강3 | 3.0 | 849 | 640 | 48.9 | 33 |
비교재1 | 비교강1 | 8.0 | 870 | 576 | 45.6 | 37 |
비교재2 | 비교강2 | 8.0 | 860 | 597 | 44.8 | 28 |
비교재3 | 발명강2 | 8.0 | 838 | 690 | 49.2 | 24 |
비교재4 | 발명강2 | 8.0 | 905 | 640 | 51.6 | 30 |
Claims (2)
- 일반 구조용 열연강판을 미니밀공정을 통해 제조하는 방법에 있어서,중량%로, C: 0.15~0.20%, Mn: 0.20~0.40%, Si: 0.025%이하, P: 0.02%이하, S: 0.015%이하, 산가용성 Al: 0.01~0.04%, N: 0.015%이하, 기타 고철로 부터 유입되는 난정련성 원소중 Cu: 0.20%이하, Sn: 0.15%이하, Ni: 0.40%이하로 조성되도록 전기로 용해하고, 용해된 용강을 두께 100mm이하의 박슬라브를 연속주조한 다음, 연속주조된 박슬라브를 Ar3의 영역에서 미니밀 열간 마무리압연한 후, 압연된 바(bar)를 680~600℃의 온도에서 열연권취함을 포함하여 구성되는 것을 특징으로 하는 미니밀에 의한 일반 구조용 열연강판의 제조방법
- 제1항에 있어서, 상기 마무리압연은 880~820℃의 온도에서 실시함을 특징으로 하는 제조방법
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0055317A KR100362664B1 (ko) | 1998-12-16 | 1998-12-16 | 미니밀에 의한 일반구조용 열연강판의 제조방법8 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0055317A KR100362664B1 (ko) | 1998-12-16 | 1998-12-16 | 미니밀에 의한 일반구조용 열연강판의 제조방법8 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000039851A KR20000039851A (ko) | 2000-07-05 |
KR100362664B1 true KR100362664B1 (ko) | 2003-03-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR10-1998-0055317A KR100362664B1 (ko) | 1998-12-16 | 1998-12-16 | 미니밀에 의한 일반구조용 열연강판의 제조방법8 |
Country Status (1)
Country | Link |
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KR (1) | KR100362664B1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010002170A (ko) * | 1999-06-11 | 2001-01-05 | 이구택 | 미니밀에 의한 일반구조용 열연강판의 제조방법 |
-
1998
- 1998-12-16 KR KR10-1998-0055317A patent/KR100362664B1/ko not_active IP Right Cessation
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Publication number | Publication date |
---|---|
KR20000039851A (ko) | 2000-07-05 |
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