KR100884515B1 - 하이드로 포밍성이 우수한 용접강관 및 그 제조방법 - Google Patents
하이드로 포밍성이 우수한 용접강관 및 그 제조방법 Download PDFInfo
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- KR100884515B1 KR100884515B1 KR1020020030565A KR20020030565A KR100884515B1 KR 100884515 B1 KR100884515 B1 KR 100884515B1 KR 1020020030565 A KR1020020030565 A KR 1020020030565A KR 20020030565 A KR20020030565 A KR 20020030565A KR 100884515 B1 KR100884515 B1 KR 100884515B1
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- Prior art keywords
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- steel pipe
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- rolling
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- 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
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- 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
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12958—Next to Fe-base component
- Y10T428/12965—Both containing 0.01-1.7% carbon [i.e., steel]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Steel (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Claims (6)
- 질량% 로,C: 0.05∼0.2%, Si: 0.01 ∼ 0.2%,Mn: 0.2 ∼ 1.5%, P: 0.01 ∼ 0.1%,S: 0.01% 이하, Al: 0.01 ∼ 0.1%,N: 0.001 ∼ 0.01% 를 함유하며,상기 조성에 첨가하여 추가로, 하기의 A군 또는 B군;A군: Cr: 0.02 ∼ 0.1%, Nb: 0.05% 이하, Ti: 0.05% 이하, Cu: 1.0% 이하, Ni: 1.0% 이하, Mo: 1.0% 이하, B: 0.01% 이하 중 1종 또는 2종 이상,B군: Ca: 0.02% 이하, REM: 0.02% 이하 중 1종 또는 2종 중에서 1군 또는 2군을 함유하며,잔부 Fe 및 불가피적 불순물로 이루어진 조성을 갖는 용접강관으로, 인장강도 TS 가 400 ∼ 590MPa 이고,진응력의 변화에 대한 진변형의 변화비인 n = (σ10% - σ5%)/(e10% - e5%) 이고,인장시험에서 판두께 진변형에 대한 판폭 진변형의 비인 r = LN(Wi/Wf)/LN(LfWf/LiWi) (Li: 최초의 길이, Lf: 최후의 길이) 이며,상기 n값과 상기 r값의 곱인 n ×r 이 0.22 이상인 것을 특징으로 하는 하이드로 포밍성이 우수한 용접강관.
- 제 1 항에 있어서, 상기 n값이 0.15 이상 또는 상기 r값이 1.5 이상인 것을 특징으로 하는 용접강관.
- 삭제
- 질량% 로,C: 0.05∼0.2%, Si: 0.01 ∼ 0.2%,Mn: 0.2 ∼ 1.5%, P: 0.01 ∼ 0.1%,S: 0.01% 이하, Al: 0.01 ∼ 0.1%,N: 0.001 ∼ 0.01% 를 함유하며,상기 조성에 첨가하여 추가로, 하기의 A군 또는 B군;A군: Cr: 0.02 ∼ 0.1%, Nb: 0.05% 이하, Ti: 0.05% 이하, Cu: 1.0% 이하, Ni: 1.0% 이하, Mo: 1.0% 이하, B: 0.01% 이하 중 1종 또는 2종 이상,B군: Ca: 0.02% 이하, REM: 0.02% 이하 중 1종 또는 2종 중에서 1군 또는 2군을 함유하는 조성을 갖는 용접강관을 소재강관으로 하고, 이 소재강관에 900 ∼ 1100℃로 가열 처리 또는 균일한 열처리를 실시한 후, 누적 축경율: 35% 이상이고, 압연종료 온도: 500∼900℃ 로 하는 드로잉 압연을 실시하는 것을 특징으로 하는, 인장강도 TS 가 400 ∼ 590MPa 이고,진응력의 변화에 대한 진변형의 변화비인 n = (σ10% - σ5%)/(e10% - e5%) 이고,인장시험에서 판두께 진변형에 대한 판폭 진변형의 비인 r = LN(Wi/Wf)/LN(LfWf/LiWi) (Li: 최초의 길이, Lf: 최후의 길이) 이며,상기 n값과 상기 r값의 곱인 n ×r 이 0.22 이상인 것을 특징으로 하는 하이드로 포밍성이 우수한 용접강관의 제조방법.
- 제 4 항에 있어서, 상기 드로잉 압연을 Ar3 변태점 이하의 온도영역에서의 누적 축경율이 20% 이상인 드로잉 압연으로 하는 것을 특징으로 하는 용접강관의 제조방법.
- 삭제
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001163608 | 2001-05-31 | ||
JPJP-P-2001-00163608 | 2001-05-31 |
Publications (2)
Publication Number | Publication Date |
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KR20020092238A KR20020092238A (ko) | 2002-12-11 |
KR100884515B1 true KR100884515B1 (ko) | 2009-02-18 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020020030565A KR100884515B1 (ko) | 2001-05-31 | 2002-05-31 | 하이드로 포밍성이 우수한 용접강관 및 그 제조방법 |
Country Status (9)
Country | Link |
---|---|
US (1) | US6723453B2 (ko) |
EP (1) | EP1264902B1 (ko) |
KR (1) | KR100884515B1 (ko) |
CN (1) | CN1201027C (ko) |
BR (1) | BR0202012B1 (ko) |
CA (1) | CA2388398C (ko) |
DE (1) | DE60205179T2 (ko) |
ES (1) | ES2247224T3 (ko) |
MX (1) | MXPA02005390A (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL1983065T3 (pl) * | 2006-02-09 | 2015-03-31 | Nippon Steel & Sumitomo Metal Corp | Metoda wytwarzania butli dla układu napełniania gazem poduszki powietrznej |
WO2008123025A1 (ja) * | 2007-03-30 | 2008-10-16 | Sumitomo Metal Industries, Ltd. | 坑井内で拡管される拡管用油井管及びその製造方法 |
KR101043262B1 (ko) * | 2008-11-12 | 2011-06-21 | 이은두 | 쌀통 |
US9528327B1 (en) | 2011-09-23 | 2016-12-27 | Global Tubing Llc | Coiled tubing optimized for long, horizontal completions |
JP6624208B2 (ja) * | 2016-02-03 | 2019-12-25 | Jfeスチール株式会社 | 大入熱溶接用鋼材 |
CN105697888B (zh) * | 2016-03-17 | 2018-01-30 | 上海飞轮有色新材料股份有限公司 | 双水内冷发电机转子用导线连接铜管的加工工艺 |
CN109440005A (zh) * | 2018-11-14 | 2019-03-08 | 河钢股份有限公司承德分公司 | 一种saph440晶粒细化钢及其生产方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0940476A1 (en) * | 1997-04-30 | 1999-09-08 | Kawasaki Steel Corporation | Steel material having high ductility and high strength and process for production thereof |
Family Cites Families (7)
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JP3143054B2 (ja) * | 1995-05-30 | 2001-03-07 | 株式会社神戸製鋼所 | 成形後の降伏強度低下の少ない高強度熱延鋼板、それを用いて成形されたパイプ及びその高強度熱延鋼板の製造方法 |
JP3853428B2 (ja) * | 1995-08-25 | 2006-12-06 | Jfeスチール株式会社 | 鋼管の絞り圧延方法および設備 |
US6290789B1 (en) | 1997-06-26 | 2001-09-18 | Kawasaki Steel Corporation | Ultrafine-grain steel pipe and process for manufacturing the same |
JP3731103B2 (ja) * | 1997-12-15 | 2006-01-05 | Jfeスチール株式会社 | 液圧バルジ成形性に優れた高強度電縫鋼管およびその製造方法 |
JP3375554B2 (ja) * | 1998-11-13 | 2003-02-10 | 川崎製鉄株式会社 | 強度一延性バランスに優れた鋼管 |
EP1462536B1 (en) * | 2000-06-07 | 2007-02-14 | Nippon Steel Corporation | Steel pipe excellent in formability and method of producing the same |
DE60204082T2 (de) * | 2001-05-31 | 2005-11-17 | Jfe Steel Corp. | Geschweisstes Stahlrohr mit ausgezeichneter Innnenhochdruck-Umformbarkeit und Verfahren zu dessen Herstellung |
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- 2002-05-30 MX MXPA02005390A patent/MXPA02005390A/es active IP Right Grant
- 2002-05-31 EP EP02012120A patent/EP1264902B1/en not_active Expired - Fee Related
- 2002-05-31 ES ES02012120T patent/ES2247224T3/es not_active Expired - Lifetime
- 2002-05-31 KR KR1020020030565A patent/KR100884515B1/ko active IP Right Grant
- 2002-05-31 CN CNB02142988XA patent/CN1201027C/zh not_active Expired - Fee Related
- 2002-05-31 BR BRPI0202012-2A patent/BR0202012B1/pt not_active IP Right Cessation
- 2002-05-31 US US10/160,798 patent/US6723453B2/en not_active Expired - Lifetime
- 2002-05-31 DE DE60205179T patent/DE60205179T2/de not_active Expired - Lifetime
- 2002-05-31 CA CA002388398A patent/CA2388398C/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0940476A1 (en) * | 1997-04-30 | 1999-09-08 | Kawasaki Steel Corporation | Steel material having high ductility and high strength and process for production thereof |
Also Published As
Publication number | Publication date |
---|---|
CA2388398C (en) | 2009-05-26 |
CN1201027C (zh) | 2005-05-11 |
EP1264902A3 (en) | 2003-10-15 |
US20020192495A1 (en) | 2002-12-19 |
MXPA02005390A (es) | 2002-12-09 |
BR0202012B1 (pt) | 2010-06-29 |
EP1264902B1 (en) | 2005-07-27 |
DE60205179D1 (de) | 2005-09-01 |
KR20020092238A (ko) | 2002-12-11 |
DE60205179T2 (de) | 2006-03-30 |
BR0202012A (pt) | 2003-04-22 |
ES2247224T3 (es) | 2006-03-01 |
CA2388398A1 (en) | 2002-11-30 |
EP1264902A2 (en) | 2002-12-11 |
CN1427087A (zh) | 2003-07-02 |
US6723453B2 (en) | 2004-04-20 |
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