JP5586704B2 - 耐熱性に優れた加工用冷延鋼板及びその製造方法 - Google Patents
耐熱性に優れた加工用冷延鋼板及びその製造方法 Download PDFInfo
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- 239000010960 cold rolled steel Substances 0.000 title claims description 38
- 238000012545 processing Methods 0.000 title claims description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 74
- 239000010959 steel Substances 0.000 claims description 74
- 229910000859 α-Fe Inorganic materials 0.000 claims description 47
- 229910052758 niobium Inorganic materials 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 23
- 239000002244 precipitate Substances 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 17
- 238000000137 annealing Methods 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 7
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 238000005097 cold rolling Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 42
- 239000010955 niobium Substances 0.000 description 39
- 230000032683 aging Effects 0.000 description 19
- 238000002845 discoloration Methods 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 15
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 239000013078 crystal Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 10
- 239000011572 manganese Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 239000006104 solid solution Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-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
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
- C22C38/04—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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Description
下記表1に示す組成で溶解して製造した発明鋼1、2と比較鋼1〜5を、下記表2に示す工程条件の下で作業して、冷延鋼板の発明材1〜4と比較材1〜10を製造した。その後、上記製造された各冷延鋼板素材に対して針状フェライト組織の体積分率及び常温と高温での特性を評価した。これを表3に示す。
下記表4に示す組成で溶解して製造した発明鋼1、2と比較鋼1〜5を、下記表5に示す工程条件の下で作業して、冷延鋼板発明材1〜5と比較材1〜10を製造した。その後、上記製造された各冷延鋼板素材に対して針状フェライト組織の体積分率及び常温と高温での特性を評価した。これを表6に示す。
Claims (6)
- 重量%で、C:0.002〜0.005%、Nb:0.02〜0.06%、Co:0.02〜0.20%、Sn:0.05〜0.25%、Mn:0.10〜0.35%、Al:0.02〜0.08%、P:0.003〜0.020%、N:0.002〜0.006%、S:0.015%以下を含有し、残部がFe及びその他の不可避的不純物からなり、
前記Nb及びCoに対するCの有効添加比(Nb×Co)/Cの値が0.6〜3.0であり、前記冷延鋼板が等軸状フェライトと針状フェライト組織からなり、前記針状フェライト組織の体積分率が5〜15%である、耐熱性に優れた加工用冷延鋼板。 - 前記冷延鋼板は(Nb、Co)C系炭化複合析出物が形成された、請求項1に記載の耐熱性に優れた加工用冷延鋼板。
- 前記冷延鋼板の表面にSn系酸化層が形成された、請求項1に記載の耐熱性に優れた加工用冷延鋼板。
- 前記Sn系酸化層がSn2O3層である、請求項3に記載の耐熱性に優れた加工用冷延鋼板。
- 重量%で、C:0.002〜0.005%、Nb:0.02〜0.06%、Co:0.02〜0.20%、Mn:0.10〜0.35%、Al:0.02〜0.08%、P:0.003〜0.020%、N:0.002〜0.006%、S:0.015%以下を含有し、残部がFe及びその他の不可避的不純物からなり、前記Nb及びCoに対するCの有効添加比(Nb×Co)/Cの値が0.6〜3.0である鋼スラブを加熱した後、熱間圧延し、巻き取った後、冷間圧延し、冷間圧延された鋼板を800℃以上の温度で焼鈍処理し、焼鈍処理された鋼板に対して30℃/sec以上の冷却速度で冷却するが、
前記熱間圧延は900〜950℃で仕上げ圧延する段階及び前記仕上げ圧延段階で熱間圧延された熱延板を20〜80℃/secの冷却速度で冷却する段階を含み、前記巻取りは560〜680℃で行われ、前記焼鈍処理は800〜900℃で行われる、耐熱性に優れた加工用冷延鋼板の製造方法。 - 重量%で、C:0.002〜0.005%、Nb:0.02〜0.06%、Co:0.02〜0.20%、Sn:0.05〜0.25%、Mn:0.10〜0.35%、Al:0.02〜0.08%、P:0.003〜0.020%、N:0.002〜0.006%、S:0.015%以下を含有し、残部がFe及びその他の不可避的不純物からなり、前記Nb及びCoに対するCの有効添加比(Nb×Co)/Cの値が0.6〜3.0である鋼スラブを加熱した後、熱間圧延し、巻き取った後、冷間圧延し、冷間圧延された鋼板を800℃以上の温度で焼鈍処理し、焼鈍処理された鋼板に対して30℃/sec以上の冷却速度で冷却するが、
前記熱間圧延は900〜950℃で仕上げ圧延する段階及び前記仕上げ圧延段階で熱間圧延された熱延板を20〜80℃/secの冷却速度で冷却する段階を含み、前記巻取りは560〜680℃で行われ、前記焼鈍処理は800〜900℃で行われる、耐熱性に優れた加工用冷延鋼板の製造方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090120143A KR101263790B1 (ko) | 2009-12-04 | 2009-12-04 | 가공성 및 내열성이 우수한 가공용 고내열 냉연강판 및 그 제조방법 |
KR1020090120150A KR101263792B1 (ko) | 2009-12-04 | 2009-12-04 | 가공성, 내열성 및 내변색성이 우수한 가공용 고내열 냉연강판 및 그 제조방법 |
KR10-2009-0120143 | 2009-12-04 | ||
KR10-2009-0120150 | 2009-12-04 | ||
PCT/KR2010/008376 WO2011068328A2 (ko) | 2009-12-04 | 2010-11-25 | 내열성이 우수한 가공용 냉연강판 및 그 제조방법 |
Publications (2)
Publication Number | Publication Date |
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JP2013512337A JP2013512337A (ja) | 2013-04-11 |
JP5586704B2 true JP5586704B2 (ja) | 2014-09-10 |
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JP2012541019A Expired - Fee Related JP5586704B2 (ja) | 2009-12-04 | 2010-11-25 | 耐熱性に優れた加工用冷延鋼板及びその製造方法 |
Country Status (3)
Country | Link |
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JP (1) | JP5586704B2 (ja) |
CN (1) | CN102791895B (ja) |
WO (1) | WO2011068328A2 (ja) |
Families Citing this family (1)
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KR102045654B1 (ko) | 2017-12-26 | 2019-11-15 | 주식회사 포스코 | 고온 특성과 상온 가공성이 우수한 냉연강판 및 그 제조방법 |
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JP3552322B2 (ja) * | 1995-02-07 | 2004-08-11 | Jfeスチール株式会社 | 加工性に優れたパイプの製造方法 |
JPH09176816A (ja) * | 1995-12-22 | 1997-07-08 | Nisshin Steel Co Ltd | 耐熱性および加工性等にすぐれた溶融アルミめっき鋼板の製造方法 |
JP3518515B2 (ja) * | 2000-03-30 | 2004-04-12 | 住友金属工業株式会社 | 低・中Cr系耐熱鋼 |
JP3958921B2 (ja) * | 2000-08-04 | 2007-08-15 | 新日本製鐵株式会社 | 塗装焼付硬化性能と耐常温時効性に優れた冷延鋼板及びその製造方法 |
DE60204323T2 (de) * | 2001-07-05 | 2006-01-26 | Nisshin Steel Co., Ltd. | Ferritischer nichtrostender stahl für ein element einer abgasstrompassage |
KR101125916B1 (ko) * | 2003-11-10 | 2012-03-21 | 주식회사 포스코 | 면내이방성이 작은 비시효 냉연강판과 그 제조방법 |
US20070122650A1 (en) * | 2003-11-14 | 2007-05-31 | Nippon Steel Corporation | Steel for exhaust gas processing equipment and exhaust gas duct excellent in wear resistance or wear resistance and gas cutting property |
CN101065503A (zh) * | 2004-11-03 | 2007-10-31 | 蒂森克虏伯钢铁股份公司 | 具有twip性能的高强度钢带或薄钢板以及通过钢带连铸制备它的方法 |
KR100711356B1 (ko) * | 2005-08-25 | 2007-04-27 | 주식회사 포스코 | 가공성이 우수한 아연도금용 강판 및 그 제조방법 |
EP1951922B1 (en) * | 2005-10-25 | 2016-05-18 | Posco | Corrosion resistance improved steel sheet for automotive muffler and method of producing the steel sheet |
KR100815799B1 (ko) * | 2006-12-12 | 2008-03-20 | 주식회사 포스코 | 내후성이 우수한 고항복비형 냉연강판 |
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2010
- 2010-11-25 JP JP2012541019A patent/JP5586704B2/ja not_active Expired - Fee Related
- 2010-11-25 CN CN201080054949.XA patent/CN102791895B/zh not_active Expired - Fee Related
- 2010-11-25 WO PCT/KR2010/008376 patent/WO2011068328A2/ko active Application Filing
Also Published As
Publication number | Publication date |
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JP2013512337A (ja) | 2013-04-11 |
CN102791895B (zh) | 2014-12-24 |
WO2011068328A2 (ko) | 2011-06-09 |
WO2011068328A3 (ko) | 2011-11-03 |
CN102791895A (zh) | 2012-11-21 |
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