KR100934405B1 - 고강도 후강판 및 그의 제조 방법, 및 고강도 강관 - Google Patents
고강도 후강판 및 그의 제조 방법, 및 고강도 강관 Download PDFInfo
- Publication number
- KR100934405B1 KR100934405B1 KR1020077018446A KR20077018446A KR100934405B1 KR 100934405 B1 KR100934405 B1 KR 100934405B1 KR 1020077018446 A KR1020077018446 A KR 1020077018446A KR 20077018446 A KR20077018446 A KR 20077018446A KR 100934405 B1 KR100934405 B1 KR 100934405B1
- Authority
- KR
- South Korea
- Prior art keywords
- high strength
- less
- steel
- temperature
- martensite
- Prior art date
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Classifications
-
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Abstract
Description
Claims (6)
- 질량 %로, C: 0.03∼0.12%, Si: 0.01∼0.5%, Mn: 1.5∼3%, Al: 0.01∼0.08%, Nb: 0.01∼0.08%, Ti: 0.005∼0.025%, N: 0.001∼0.01%, O:0.003% 이하, S: 0.001% 이하, Ca: 0.0005∼0.01%; 또한,Cu: 0.01∼2%, Ni: 0.01∼3%, Cr: 0.01∼1%, Mo: 0.01∼1%, V: 0.01∼0.1% 중 1종 이상의 성분;을 포함하고,여기서, Ca, 0, S의 함유량은, 하기의 (1)식을 만족시키고, 잔부는, Fe 및 불가피적 불순물로 이루어지며,1≤(1-130×[O])×[Ca]/(1.25×[S])≤3…(1)(단, 상기 (1)식에 있어서, [O], [Ca], [S]는 각 원소의 강 중 함유량(질량 %))또한, 미크로 조직에 있어서,·페라이트+베이나이트, 페라이트+마르텐사이트 및, 페라이트+베이나이트+마르텐사이트 중 어느 하나가 면적 분율(area fraction)로 90% 이상; 또한·전체 미크로 조직 중 페라이트가 면적 분율로 10∼50%; 또한·베이나이트, 또는, 마르텐사이트, 또는, 베이나이트 및 마르텐사이트 중의 시멘타이트의 평균 입경이 0.5㎛ 이하; 또한·강 중에 존재하는 Nb, Ti, Mo 및 V의 어느 1종을 포함하는 단독 탄화물 또는 이들의 2종 이상을 포함하는 복합 탄화물에 포함되는 Nb, Ti, Mo, V 양의 총합이, 강 중에 함유되는 Nb, Ti, Mo 및 V의 총합의 10% 이하(질량 %로);인 고강도 후강판.
- 제1항에 있어서,질량 %로, REM: 0.0005∼0.02%, Zr: 0.0005∼0.03%, Mg: 0.0005∼0.01% 중, 1종 이상의 성분을 포함하는 고강도 후강판.
- 제1항 또는 제2항에 있어서,베이나이트, 또는, 마르텐사이트, 또는, 베이나이트 및 마르텐사이트 중에 존재하는 시멘타이트의 평균 입경은, 0.2㎛ 이하인 고강도 후강판.
- ·제1항 또는 제2항에 기재된 성분 조성을 갖는 강을, 1000∼1200℃로 가열 후, 압연을 개시하는 공정;·950℃ 이하의 온도역에서의 누적 압하량이 67% 이상이 되도록 압연을 행하는 공정;·Ar3점 이상, Ar3점+100℃ 이하의 온도에서 압연을 종료하는 공정;·계속해서, Ar3점-50℃ 이상, Ar3점 미만의 온도에서, 냉각 속도 20∼80℃/s의 가속 냉각을 개시하는 공정;·250℃ 이하의 온도역에서 냉각을 정지하는 공정; 및,·냉각 후 즉시, 평균 승온 속도를 5℃/s 이상으로 하여 300℃ 이상 450℃ 이하의 온도로 재가열하는 공정;을 포함하는 고강도 후강판의 제조 방법.
- 제1항 또는 제2항에 기재된 고강도 후강판을 이용하여 제조한 고강도 강관.
- 제3항에 기재된 고강도 후강판을 이용하여 제조한 고강도 강관.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005103090 | 2005-03-31 | ||
JPJP-P-2005-00103090 | 2005-03-31 | ||
JP2006089276A JP4997805B2 (ja) | 2005-03-31 | 2006-03-28 | 高強度厚鋼板およびその製造方法、ならびに高強度鋼管 |
JPJP-P-2006-00089276 | 2006-03-28 | ||
PCT/JP2006/307285 WO2006104261A1 (ja) | 2005-03-31 | 2006-03-30 | 高強度厚鋼板およびその製造方法、ならびに高強度鋼管 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20070094846A KR20070094846A (ko) | 2007-09-21 |
KR100934405B1 true KR100934405B1 (ko) | 2009-12-29 |
Family
ID=37053506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020077018446A KR100934405B1 (ko) | 2005-03-31 | 2006-03-30 | 고강도 후강판 및 그의 제조 방법, 및 고강도 강관 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8758528B2 (ko) |
EP (1) | EP1870484B1 (ko) |
JP (1) | JP4997805B2 (ko) |
KR (1) | KR100934405B1 (ko) |
CA (1) | CA2602728C (ko) |
WO (1) | WO2006104261A1 (ko) |
Families Citing this family (21)
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JP4356950B2 (ja) | 2006-12-15 | 2009-11-04 | 株式会社神戸製鋼所 | 耐応力除去焼鈍特性と溶接性に優れた高強度鋼板 |
JP4959402B2 (ja) * | 2007-03-29 | 2012-06-20 | 新日本製鐵株式会社 | 耐表面割れ特性に優れた高強度溶接構造用鋼とその製造方法 |
JP4977876B2 (ja) * | 2007-03-30 | 2012-07-18 | Jfeスチール株式会社 | 母材および溶接部靱性に優れた超高強度高変形能溶接鋼管の製造方法 |
JP5079419B2 (ja) * | 2007-08-09 | 2012-11-21 | 新日本製鐵株式会社 | 溶接熱影響部の靱性が優れた溶接構造物用鋼とその製造方法および溶接構造物の製造方法 |
JP5076959B2 (ja) * | 2008-02-22 | 2012-11-21 | Jfeスチール株式会社 | 耐延性き裂発生特性に優れる低降伏比高強度鋼板とその製造方法 |
JP5439887B2 (ja) * | 2008-03-31 | 2014-03-12 | Jfeスチール株式会社 | 高張力鋼およびその製造方法 |
JP5353156B2 (ja) * | 2008-09-26 | 2013-11-27 | Jfeスチール株式会社 | ラインパイプ用鋼管及びその製造方法 |
WO2011040624A1 (ja) * | 2009-09-30 | 2011-04-07 | Jfeスチール株式会社 | 低降伏比、高強度および高靭性を有した鋼板及びその製造方法 |
WO2011052095A1 (ja) * | 2009-10-28 | 2011-05-05 | 新日本製鐵株式会社 | 強度、延性の良好なラインパイプ用鋼板およびその製造方法 |
JP5516785B2 (ja) * | 2012-03-29 | 2014-06-11 | Jfeスチール株式会社 | 低降伏比高強度鋼板およびその製造方法並びにそれを用いた高強度溶接鋼管 |
CN103060715B (zh) | 2013-01-22 | 2015-08-26 | 宝山钢铁股份有限公司 | 一种具有低屈服比的超高强韧钢板及其制造方法 |
EP3085800B1 (en) * | 2013-12-20 | 2019-02-06 | Nippon Steel & Sumitomo Metal Corporation | Electric resistance welded steel pipe |
BR112017007685B1 (pt) * | 2014-10-17 | 2021-05-11 | Nippon Steel Corporation | material de aço laminado para haste de conexão de divisão por fratura |
WO2016152170A1 (ja) | 2015-03-26 | 2016-09-29 | Jfeスチール株式会社 | 構造管用厚肉鋼板、構造管用厚肉鋼板の製造方法、および構造管 |
US10640841B2 (en) | 2015-03-31 | 2020-05-05 | Jfe Steel Corporation | High-strength, high-toughness steel plate and method for producing the same |
CN105463319A (zh) * | 2015-11-30 | 2016-04-06 | 丹阳市宸兴环保设备有限公司 | 一种石油输送管用钢板 |
JP6455533B2 (ja) * | 2016-02-26 | 2019-01-23 | Jfeスチール株式会社 | 大入熱溶接熱影響部靭性に優れた低降伏比高強度厚鋼板およびその製造方法 |
JP6809524B2 (ja) * | 2018-01-10 | 2021-01-06 | Jfeスチール株式会社 | 超低降伏比高張力厚鋼板およびその製造方法 |
WO2020039979A1 (ja) * | 2018-08-23 | 2020-02-27 | Jfeスチール株式会社 | 熱延鋼板およびその製造方法 |
US20220220574A1 (en) * | 2019-03-28 | 2022-07-14 | Jfe Steel Corporation | Steel material for line pipes, method for producing the same, line pipe, and method for producing the line pipe |
CN115505832B (zh) * | 2021-06-07 | 2023-09-05 | 上海梅山钢铁股份有限公司 | 一种屈服强度340MPa级液晶背板用热镀铝锌钢板 |
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2006
- 2006-03-28 JP JP2006089276A patent/JP4997805B2/ja active Active
- 2006-03-30 CA CA2602728A patent/CA2602728C/en not_active Expired - Fee Related
- 2006-03-30 KR KR1020077018446A patent/KR100934405B1/ko active IP Right Grant
- 2006-03-30 US US11/887,018 patent/US8758528B2/en not_active Expired - Fee Related
- 2006-03-30 WO PCT/JP2006/307285 patent/WO2006104261A1/ja active Application Filing
- 2006-03-30 EP EP06731233.0A patent/EP1870484B1/en not_active Expired - Fee Related
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JPH1017982A (ja) | 1996-06-28 | 1998-01-20 | Nippon Steel Corp | 耐破壊性能に優れた建築用低降伏比高張力鋼材及びその製造方法 |
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Also Published As
Publication number | Publication date |
---|---|
JP2006307334A (ja) | 2006-11-09 |
US8758528B2 (en) | 2014-06-24 |
KR20070094846A (ko) | 2007-09-21 |
EP1870484B1 (en) | 2014-11-12 |
EP1870484A4 (en) | 2011-08-17 |
EP1870484A1 (en) | 2007-12-26 |
US20090120541A1 (en) | 2009-05-14 |
CA2602728A1 (en) | 2006-10-05 |
CA2602728C (en) | 2011-10-25 |
WO2006104261A1 (ja) | 2006-10-05 |
JP4997805B2 (ja) | 2012-08-08 |
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