JP4471688B2 - 延性に優れた高強度低比重鋼板およびその製造方法 - Google Patents
延性に優れた高強度低比重鋼板およびその製造方法 Download PDFInfo
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- JP4471688B2 JP4471688B2 JP2004074914A JP2004074914A JP4471688B2 JP 4471688 B2 JP4471688 B2 JP 4471688B2 JP 2004074914 A JP2004074914 A JP 2004074914A JP 2004074914 A JP2004074914 A JP 2004074914A JP 4471688 B2 JP4471688 B2 JP 4471688B2
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- 229910000831 Steel Inorganic materials 0.000 title claims description 56
- 239000010959 steel Substances 0.000 title claims description 56
- 230000005484 gravity Effects 0.000 title claims description 44
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 238000000137 annealing Methods 0.000 claims description 15
- 238000005098 hot rolling Methods 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 230000000694 effects Effects 0.000 description 11
- 239000013078 crystal Substances 0.000 description 8
- 238000001953 recrystallisation Methods 0.000 description 8
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 229910052748 manganese Inorganic materials 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 238000005097 cold rolling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 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
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- -1 carbon nitrides Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Description
ある。0.01%未満ではその効果が発現されない。
しい。
Claims (4)
- 質量%で、
C:0.001〜0.01%、
Si:3.0%以下、
Mn:0.01〜0.03%未満、
P :0.02%以下、
S :0.005%未満、
Al:5.0〜10.0%、
N :0.001〜0.05%
を含有し、残部がFeおよび不可避的不純物からなり、かつ、比重<7.2であり、引張強度が440MPa以上であり、伸びが25%以上であることを特徴とする延性に優れた高強度低比重鋼板。 - 比重<7.2であり、引張強度が440MPa以上であり、伸びが25%以上である延性に優れた高強度低比重鋼板を製造する方法であって、質量%で、
C:0.001〜0.01%、
Si:3.0%以下、
Mn:0.01〜0.03%未満、
P :0.02%以下、
S :0.005%未満、
Al:5.0〜10.0%、
N:0.001〜0.05%
を含有し、残部がFeおよび不可避的不純物からなる鋼スラブを1100℃以上1150℃以下の温度に加熱し、1000℃以上1100℃以下の温度で圧下率40%以上の大圧下を少なくとも1パス以上含みかつ700℃以上850℃以下の仕上げ圧延温度で熱間圧延し、550℃以上700℃以下の温度で巻き取ることを特徴とする延性に優れた高強度低比重鋼板の製造方法。 - 鋼板を巻き取った後、700℃以上1100℃以下の温度で焼鈍することを特徴とする請求項2に記載の延性に優れた高強度低比重鋼板の製造方法。
- 鋼板を巻き取った後、酸洗し、1パス目の圧下率を30%以下とする冷間圧延を行い、600℃以上1100℃以下の温度で焼鈍を行い、焼鈍後、20℃/秒以上の冷却速度で200℃以下の温度まで冷却することを特徴とする請求項2に記載の延性に優れた高強度低比重鋼板の製造方法。
Priority Applications (1)
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JP2004074914A JP4471688B2 (ja) | 2003-06-18 | 2004-03-16 | 延性に優れた高強度低比重鋼板およびその製造方法 |
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JP2003173251 | 2003-06-18 | ||
JP2004074914A JP4471688B2 (ja) | 2003-06-18 | 2004-03-16 | 延性に優れた高強度低比重鋼板およびその製造方法 |
Related Child Applications (3)
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JP2009026773A Division JP4472015B2 (ja) | 2003-06-18 | 2009-02-06 | 延性に優れた高強度低比重鋼板およびその製造方法 |
JP2010003244A Division JP5094888B2 (ja) | 2003-06-18 | 2010-01-08 | 延性に優れた高強度低比重鋼板の製造方法 |
JP2010003233A Division JP5094887B2 (ja) | 2003-06-18 | 2010-01-08 | 延性に優れた高強度低比重鋼板の製造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2005029889A JP2005029889A (ja) | 2005-02-03 |
JP4471688B2 true JP4471688B2 (ja) | 2010-06-02 |
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JP2004074914A Expired - Lifetime JP4471688B2 (ja) | 2003-06-18 | 2004-03-16 | 延性に優れた高強度低比重鋼板およびその製造方法 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103691741A (zh) * | 2012-09-27 | 2014-04-02 | 日立金属株式会社 | Fe-Al系合金带钢的制造方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070106630A (ko) * | 2005-02-10 | 2007-11-02 | 요시히라 오칸다 | 신규 Fe-Al 합금 및 그 제조 방법 |
JP5394166B2 (ja) * | 2009-08-21 | 2014-01-22 | 株式会社ケーヒン | 電磁式作動装置及び電磁式燃料噴射弁 |
JP2013001978A (ja) * | 2011-06-20 | 2013-01-07 | Okanda Yoriko | Fe−Al合金素材の製造方法、及び棒状あるいは線状のFe−Al合金素材 |
EP2817428B2 (en) | 2012-02-20 | 2019-06-19 | Tata Steel Nederland Technology B.V. | High strength bake-hardenable low density steel and method for producing said steel |
CN104220609B (zh) | 2012-04-11 | 2016-08-17 | 塔塔钢铁荷兰科技有限责任公司 | 高强度无晶隙低密度钢及所述钢的制备方法 |
ES2705349T3 (es) | 2013-05-01 | 2019-03-22 | Nippon Steel & Sumitomo Metal Corp | Chapa de acero galvanizado y método para producirla |
KR101764990B1 (ko) | 2013-05-01 | 2017-08-03 | 신닛테츠스미킨 카부시키카이샤 | 스폿 용접성이 우수한 고강도 저비중 강판 |
KR101560913B1 (ko) | 2013-12-13 | 2015-10-15 | 주식회사 포스코 | 우수한 열간압연성과 내식성을 갖는 경량 열연강판 및 그 제조방법 |
KR101560911B1 (ko) | 2013-12-13 | 2015-10-15 | 주식회사 포스코 | 우수한 열간압연성과 내식성을 갖는 경량 열연강판 및 그 제조방법 |
JP6972722B2 (ja) * | 2017-07-18 | 2021-11-24 | 日本製鉄株式会社 | 低合金鋼 |
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- 2004-03-16 JP JP2004074914A patent/JP4471688B2/ja not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103691741A (zh) * | 2012-09-27 | 2014-04-02 | 日立金属株式会社 | Fe-Al系合金带钢的制造方法 |
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