KR100799421B1 - 용접성이 우수한 490MPa급 저항복비 냉간성형강관 및 그제조방법 - Google Patents
용접성이 우수한 490MPa급 저항복비 냉간성형강관 및 그제조방법 Download PDFInfo
- Publication number
- KR100799421B1 KR100799421B1 KR1020060078718A KR20060078718A KR100799421B1 KR 100799421 B1 KR100799421 B1 KR 100799421B1 KR 1020060078718 A KR1020060078718 A KR 1020060078718A KR 20060078718 A KR20060078718 A KR 20060078718A KR 100799421 B1 KR100799421 B1 KR 100799421B1
- Authority
- KR
- South Korea
- Prior art keywords
- less
- cold
- steel pipe
- temperature
- steel
- Prior art date
Links
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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- 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
- C22C38/002—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
- C22C38/06—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
- C22C38/18—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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims (9)
- 냉간성형강관으로서,C : 0.07 ~ 0.18%, (질량%, 이하 모두 동일)Si : 0.05 ~ 1.0%,Mn : 0.7 ~ 1.7%,Ti : 0.002 ~ 0.025%,sol.Al : 0.005 ~ 0.1% 및N : 0.001 ~ 0.008%을 각각 함유하고,Cr : 0.6% 이하(0% 포함), Mo : 0.5% 이하(0% 포함) 및 V : 0.08% 이하(0% 포함)로 이루어지는 군으로부터 선택되는 적어도 1종을 함유하고,Mn 함유량 [Mn]과 C 함유량 [C]의 비가[Mn]/[C]≤15를 만족하고,하기 (1)식에서 나타난 탄소당량 Ceq 값이 0.34~0.42%의 범위 안에 있고,하기 (2)식에서 나타난 A값이 1.1~2.6을 만족하고,마이크로조직이, 40~70면적%의 폴리고날페라이트상, 20면적% 이하의 의(擬) 폴리고날페라이트 상, 및 5면적% 이하이고, 아스펙트비(장경(長徑)/단경(短徑))가 4.0 이하인 섬형상(島狀) 마르텐사이트 상, 잔부가 베이나이트 상으로 이루어지며,판 두께가 t(㎜)인 강판에서 얻어지고, 상기 강관의 외측냉간굽힘 직경을 d(㎜)라고 했을 때, t/d가 10% 이하인 냉간성형부위를 가지는 냉간성형강관(冷間成形鋼管).Cep=[C]+[Si]/24+[Mn]/6+[Ni]/40+[Cr]/5+[Mo]/4+[V]/15 ‥‥ (1)단, [C], [Si], [Mn], [Ni], [Cr], [Mo] 및 [V]는, 각각 C, Si, Mn, Ni, Cr, Mo 및 V의 함유량(질량%)을 나타낸다.A=(2.16{Cr}+1)×(3.0{Mo}+1)×(1.75{V}+1) ‥‥ (2)단, {Cr}, {Mo} 및 {V}는 각각 Cr, Mo 및 V의 상기 강판중의 고용량(固溶量)(질량%)을 나타낸다.
- 제 1항에 있어서, 또한 Cu:0.5% 이하(0%를 포함하지 않음)와 Ni:3.0% 이하(0%를 포함하지 않음)의 적어도 한쪽을 함유하는 것을 특징으로 하는 냉간성형강관.
- 제 1항에 있어서, 또한 Nb:0.015% 이하(0%를 포함하지 않음)를 함유하는 것을 특징으로 하는 냉간성형강관.
- 제 1항에 있어서, 또한 Ca:0.005% 이하(0%를 포함하지 않음)를 함유하는 것 을 특징으로 하는 냉간성형강관.
- 제 1항에 있어서, 또한 희토류 원소:0.02% 이하(0%를 포함하지 않음)를 함유하는 것을 특징으로 하는 냉간성형강관.
- 제 1항의 냉간성형강관을 제조하는 방법은,강편을 950~1250℃의 온도범위로 가열하고;하기 (3)식에서 나타난 오스테나이트 미재결정화 온도 Aγ(℃) 이하에서의 누적압하율이 60% 이하(0%를 포함)가 되도록 상기 강편을 압연하여 강판으로 하고;Ar3 변태점 이상의 온도에서 450℃ 이하까지 4~100℃/sec.의 냉각속도로 상기 강판을 가속냉각하고;Aγ(℃)=887+467[C]+(6445[Nb]-644√[Nb])+(732[V]-230√[V])+890[Ti]+363 [Al]-357[Si] ‥‥(3)단, [C], [Nb], [V], [Ti], [Al] 및 [Si]는 각각 C, Nb, V, Ti, Al 및 Si의 함유량(질량%)을 나타낸다.
- 제 6항에 있어서, 상기 압연을 완료한 후의 상기 강판에 대하여, 가속냉각하기 전에 온라인레벨러 교정을 행하는 것을 특징으로 하는 냉간성형강관 제조방법.
- 제 6항에 있어서, 상기 냉간성형을, 강판온도 400℃ 이하로 행하는 것을 특징으로 하는 냉간성형강관 제조방법.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005282661 | 2005-09-28 | ||
JPJP-P-2005-00282661 | 2005-09-28 | ||
JP2006046739A JP5069863B2 (ja) | 2005-09-28 | 2006-02-23 | 溶接性に優れた490MPa級低降伏比冷間成形鋼管およびその製造方法 |
JPJP-P-2006-00046739 | 2006-02-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20070035952A KR20070035952A (ko) | 2007-04-02 |
KR100799421B1 true KR100799421B1 (ko) | 2008-01-30 |
Family
ID=38144041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020060078718A KR100799421B1 (ko) | 2005-09-28 | 2006-08-21 | 용접성이 우수한 490MPa급 저항복비 냉간성형강관 및 그제조방법 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP5069863B2 (ko) |
KR (1) | KR100799421B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101235979B1 (ko) * | 2010-06-29 | 2013-02-28 | 현대제철 주식회사 | 용융아연도금용 용기 및 이를 제조하는 방법 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5065781B2 (ja) * | 2007-07-10 | 2012-11-07 | 臼井国際産業株式会社 | 燃料噴射管用鋼管およびその製造方法 |
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 |
CN101960034B (zh) * | 2008-03-27 | 2012-10-31 | 新日本制铁株式会社 | 成形性和焊接性优良的高强度冷轧钢板、高强度镀锌钢板、高强度合金化热浸镀锌钢板、及它们的制造方法 |
JP5162382B2 (ja) * | 2008-09-03 | 2013-03-13 | 株式会社神戸製鋼所 | 低降伏比高靭性厚鋼板 |
KR101120351B1 (ko) * | 2008-09-04 | 2012-03-13 | 가부시키가이샤 고베 세이코쇼 | 후강판 |
JP5385760B2 (ja) * | 2009-10-30 | 2014-01-08 | 株式会社神戸製鋼所 | 耐震性に優れた冷間成形角形鋼管 |
JP5834534B2 (ja) * | 2010-06-29 | 2015-12-24 | Jfeスチール株式会社 | 高一様伸び特性を備えた高強度低降伏比鋼、その製造方法、および高強度低降伏比溶接鋼管 |
JP5601295B2 (ja) * | 2011-09-01 | 2014-10-08 | 新日鐵住金株式会社 | 降伏比の低い内面突起つきスパイラル鋼管およびその製造法 |
JP5480215B2 (ja) * | 2011-09-08 | 2014-04-23 | 株式会社神戸製鋼所 | 引張強さ780MPa以上の低降伏比厚肉円形鋼管用鋼板およびその製造方法、並びに引張強さ780MPa以上の低降伏比厚肉円形鋼管 |
RU2613824C2 (ru) * | 2012-04-13 | 2017-03-21 | ДжФЕ СТИЛ КОРПОРЕЙШН | Высокопрочные толстостенные стальные трубы, сваренные электрической контактной сваркой, с высокой ударной вязкостью и способ их изготовления |
CN103966504B (zh) * | 2013-01-24 | 2016-12-28 | 宝山钢铁股份有限公司 | 一种500MPa级低屈强比直缝焊钢管及其制造方法 |
RU2548536C1 (ru) * | 2013-12-06 | 2015-04-20 | Акционерное общество "Выксунский металлургический завод" (АО "ВМЗ") | Способ производства толстолистового проката классов прочности к52-к60, х52-х70, l360-l485 для изготовления электросварных труб магистральных трубопроводов |
CN103757540A (zh) * | 2014-01-09 | 2014-04-30 | 鞍钢股份有限公司 | 一种出口s355j2加钛钢板及其生产方法 |
JP6645107B2 (ja) * | 2015-10-07 | 2020-02-12 | 日本製鉄株式会社 | H形鋼及びその製造方法 |
CN113453817B (zh) * | 2019-02-20 | 2023-06-30 | 杰富意钢铁株式会社 | 方形钢管、其制造方法以及建筑结构物 |
CN113453816B (zh) * | 2019-02-20 | 2023-05-16 | 杰富意钢铁株式会社 | 方形钢管及其制造方法以及建筑构造物 |
KR102296840B1 (ko) | 2019-12-16 | 2021-09-01 | 주식회사 포스코 | 연성이 우수한 고강도 강재 및 그 제조방법 |
CN116254459A (zh) * | 2022-07-24 | 2023-06-13 | 湖南华菱涟钢特种新材料有限公司 | 一种高折弯性能的耐磨钢板及其制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07109521A (ja) * | 1993-10-12 | 1995-04-25 | Nippon Steel Corp | 冷間成形による建築用低降伏比600N/mm2 級鋼管の製造法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06264143A (ja) * | 1993-03-12 | 1994-09-20 | Nippon Steel Corp | 冷間成形による建築用低降伏比鋼管の製造法 |
JPH06264144A (ja) * | 1993-03-16 | 1994-09-20 | Nippon Steel Corp | 冷間成形による建築用低降伏比鋼管の製造法 |
JP2000178689A (ja) * | 1998-12-18 | 2000-06-27 | Nkk Corp | 耐座屈特性に優れた鋼管及びその製造方法 |
JP3654194B2 (ja) * | 2001-01-29 | 2005-06-02 | 住友金属工業株式会社 | 耐歪み時効特性に優れた高強度鋼材とその製造方法 |
JP4507730B2 (ja) * | 2003-07-16 | 2010-07-21 | Jfeスチール株式会社 | 低降伏比高強度高靱性鋼板及びその製造方法 |
JP4333321B2 (ja) * | 2003-10-22 | 2009-09-16 | 住友金属工業株式会社 | 鋼板の製造ライン及び鋼板の製造方法 |
-
2006
- 2006-02-23 JP JP2006046739A patent/JP5069863B2/ja active Active
- 2006-08-21 KR KR1020060078718A patent/KR100799421B1/ko active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07109521A (ja) * | 1993-10-12 | 1995-04-25 | Nippon Steel Corp | 冷間成形による建築用低降伏比600N/mm2 級鋼管の製造法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101235979B1 (ko) * | 2010-06-29 | 2013-02-28 | 현대제철 주식회사 | 용융아연도금용 용기 및 이를 제조하는 방법 |
Also Published As
Publication number | Publication date |
---|---|
JP2007119899A (ja) | 2007-05-17 |
JP5069863B2 (ja) | 2012-11-07 |
KR20070035952A (ko) | 2007-04-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100799421B1 (ko) | 용접성이 우수한 490MPa급 저항복비 냉간성형강관 및 그제조방법 | |
JP5277648B2 (ja) | 耐遅れ破壊特性に優れた高張力鋼板並びにその製造方法 | |
JP3857939B2 (ja) | 局部延性に優れた高強度高延性鋼および鋼板並びにその鋼板の製造方法 | |
JP4572002B1 (ja) | 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 | |
JP5776398B2 (ja) | 低温靭性に優れた低降伏比高強度熱延鋼板およびその製造方法 | |
JP5609383B2 (ja) | 低温靭性に優れた高強度熱延鋼板およびその製造方法 | |
JP5476763B2 (ja) | 延性に優れた高張力鋼板及びその製造方法 | |
EP2264205A1 (en) | High-strength steel plate excellent in low-temperature toughness, steel pipe, and processes for production of both | |
KR20080085739A (ko) | 용접성 및 소성 변형능이 우수한 고장력 강재, 및 냉간 성형 강관 | |
JP4283757B2 (ja) | 厚鋼板およびその製造方法 | |
JP7339339B2 (ja) | 冷間加工性及びssc抵抗性に優れた超高強度鋼材及びその製造方法 | |
JP5045074B2 (ja) | 低降伏比を有する高張力薄肉鋼板およびその製造方法 | |
JP6795048B2 (ja) | 非調質低降伏比高張力厚鋼板およびその製造方法 | |
WO2020039979A1 (ja) | 熱延鋼板およびその製造方法 | |
JP2019119934A (ja) | 超低降伏比高張力厚鋼板およびその製造方法 | |
US20130224063A1 (en) | Steel plate for pipeline, having excellent hydrogen induced crack resistance, and preparation method thereof | |
JP6519024B2 (ja) | 低温靭性に優れた低降伏比高強度熱延鋼板の製造方法 | |
WO2020202334A1 (ja) | 電縫鋼管およびその製造方法、並びに鋼管杭 | |
JP7221475B6 (ja) | 延性及び低温靭性に優れた高強度鋼材及びその製造方法 | |
JP2019196508A (ja) | 熱延鋼板、角形鋼管、およびその製造方法 | |
JPH10306316A (ja) | 低温靭性に優れた低降伏比高張力鋼材の製造方法 | |
WO2020202333A1 (ja) | 電縫鋼管およびその製造方法、並びに鋼管杭 | |
JP4848960B2 (ja) | 薄肉低降伏比高張力鋼板およびその製造方法 | |
JPH0920922A (ja) | 高靱性低温用鋼板の製造方法 | |
JP3737300B2 (ja) | 溶接性の優れた非調質型低降伏比高張力鋼板 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20121220 Year of fee payment: 6 |
|
FPAY | Annual fee payment |
Payment date: 20131219 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20150106 Year of fee payment: 8 |
|
FPAY | Annual fee payment |
Payment date: 20151217 Year of fee payment: 9 |
|
FPAY | Annual fee payment |
Payment date: 20161220 Year of fee payment: 10 |
|
FPAY | Annual fee payment |
Payment date: 20171219 Year of fee payment: 11 |
|
FPAY | Annual fee payment |
Payment date: 20190103 Year of fee payment: 12 |
|
FPAY | Annual fee payment |
Payment date: 20200103 Year of fee payment: 13 |