WO2009063660A1 - 耐サワー性能に優れた鋼管用鋼およびその製造方法 - Google Patents

耐サワー性能に優れた鋼管用鋼およびその製造方法 Download PDF

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Publication number
WO2009063660A1
WO2009063660A1 PCT/JP2008/063151 JP2008063151W WO2009063660A1 WO 2009063660 A1 WO2009063660 A1 WO 2009063660A1 JP 2008063151 W JP2008063151 W JP 2008063151W WO 2009063660 A1 WO2009063660 A1 WO 2009063660A1
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WIPO (PCT)
Prior art keywords
steel
inclusion
content
sour resistance
manufacturing
Prior art date
Application number
PCT/JP2008/063151
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English (en)
French (fr)
Inventor
Mitsuhiro Numata
Shingo Takeuchi
Tomohiko Omura
Original Assignee
Sumitomo Metal Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries, Ltd. filed Critical Sumitomo Metal Industries, Ltd.
Priority to BRPI0812995A priority Critical patent/BRPI0812995B1/pt
Priority to CA2689522A priority patent/CA2689522C/en
Priority to ES08778316T priority patent/ES2719095T3/es
Priority to CN2008801022208A priority patent/CN101784680B/zh
Priority to EP08778316.3A priority patent/EP2208799B1/en
Priority to PL08778316T priority patent/PL2208799T3/pl
Publication of WO2009063660A1 publication Critical patent/WO2009063660A1/ja
Priority to US12/629,182 priority patent/US7959709B2/en
Priority to US13/103,135 priority patent/US8262767B2/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • 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
    • C22C38/04—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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

　本発明の鋼管用鋼は、Ｃ、Ｍｎ、Ｓｉ、Ｐ、Ｓ、Ｔｉ、Ａｌ、Ｃａ、ＮおよびＯ、ならびに必要に応じてＣｒ、Ｎｉ、Ｃｕ、Ｍｏ、Ｖ、ＢおよびＮｂの一種以上を所定量含有する鋼であって、鋼中介在物がＣａ、Ａｌ、ＯおよびＳを主成分とし、介在物中のＣａＯ含有率が３０～８０％、かつ、鋼中Ｎ含有率（ｐｐｍ）と介在物中のＣａＯ含有率（％）との比が０．２８～２．０であり、介在物中のＣａＳ含有率が２５％以下である耐サワー性能に優れた鋼管用鋼である。また、本発明の鋼管用鋼の製造方法は、鋼中Ｎ含有率（ｐｐｍ）と溶鋼中へのＣａ添加量（ｋｇ／ｔ）との比が２００～８５７となるようにＣａを添加する鋼管用鋼の製造方法である。本発明の製造方法によれば、スラグ組成、溶鋼の昇熱処理、溶鋼およびスラグの攪拌処理、ならびにＣａ添加が適正化されるので、優れた耐サワー性能および清浄度を有する鋼管用高強度耐ＨＩＣ鋼を安定して製造できる。
PCT/JP2008/063151 2007-11-14 2008-07-23 耐サワー性能に優れた鋼管用鋼およびその製造方法 WO2009063660A1 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BRPI0812995A BRPI0812995B1 (pt) 2007-11-14 2008-07-23 método para produção de aço para tubos de aço excelente em performance de resistência à corrosão por ácido
CA2689522A CA2689522C (en) 2007-11-14 2008-07-23 Method of producing steel for steel pipe excellent in sour-resistance performance
ES08778316T ES2719095T3 (es) 2007-11-14 2008-07-23 Método de fundido y refinado de acero para una tubería de acero con un excelente rendimiento de resistencia a los ácidos
CN2008801022208A CN101784680B (zh) 2007-11-14 2008-07-23 抗硫性能优异的钢管用钢的制造方法
EP08778316.3A EP2208799B1 (en) 2007-11-14 2008-07-23 Method of melting and refining steel for a steel pipe excellent in sour-resistance performance
PL08778316T PL2208799T3 (pl) 2007-11-14 2008-07-23 Sposób topienia i rafinacji stali do produkcji rur stalowych o doskonałej kwasoodporności
US12/629,182 US7959709B2 (en) 2007-11-14 2009-12-02 Method of producing steel for steel pipe excellent in sour-resistance performance
US13/103,135 US8262767B2 (en) 2007-11-14 2011-05-09 Method of producing steel for steel pipe excellent in sour-resistance performance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007295111A JP5262075B2 (ja) 2007-11-14 2007-11-14 耐サワー性能に優れた鋼管用鋼の製造方法
JP2007-295111 2007-11-14

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/629,182 Continuation US7959709B2 (en) 2007-11-14 2009-12-02 Method of producing steel for steel pipe excellent in sour-resistance performance

Publications (1)

Publication Number Publication Date
WO2009063660A1 true WO2009063660A1 (ja) 2009-05-22

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Application Number Title Priority Date Filing Date
PCT/JP2008/063151 WO2009063660A1 (ja) 2007-11-14 2008-07-23 耐サワー性能に優れた鋼管用鋼およびその製造方法

Country Status (11)

Country Link
US (2) US7959709B2 (ja)
EP (1) EP2208799B1 (ja)
JP (1) JP5262075B2 (ja)
KR (1) KR101150141B1 (ja)
CN (1) CN101784680B (ja)
BR (1) BRPI0812995B1 (ja)
CA (1) CA2689522C (ja)
ES (1) ES2719095T3 (ja)
PL (1) PL2208799T3 (ja)
RU (1) RU2433189C2 (ja)
WO (1) WO2009063660A1 (ja)

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JP2010280940A (ja) * 2009-06-03 2010-12-16 Nippon Steel Corp 高清浄鋼の溶製方法
CN109022682A (zh) * 2018-08-13 2018-12-18 林州凤宝管业有限公司 一种vd钢的生产方法

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JP5799610B2 (ja) * 2011-06-27 2015-10-28 Ｊｆｅスチール株式会社 電縫溶接部の耐サワー特性に優れた高強度厚肉電縫鋼管の製造方法
CN102605239A (zh) * 2011-12-09 2012-07-25 首钢总公司 一种低硫钢及其生产方法
CN102605242B (zh) * 2012-03-05 2015-01-21 宝山钢铁股份有限公司 一种抗氢致开裂压力容器用钢及其制造方法
CN103305659B (zh) * 2012-03-08 2016-03-30 宝山钢铁股份有限公司 磁性优良的无取向电工钢板及其钙处理方法
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EP2862954A4 (en) 2012-06-18 2016-01-20 Jfe Steel Corp THICKNESS, HIGHLY RESISTANT, SAUERGASBESTÄNDIGES LINE TUBE AND METHOD FOR THE PRODUCTION THEREOF
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CN104428437B (zh) 2012-07-09 2017-03-08 杰富意钢铁株式会社 厚壁高强度耐酸性管线管及其制造方法
CN102864375B (zh) * 2012-09-25 2014-03-19 攀钢集团成都钢钒有限公司 核电用碳钢无缝钢管及其生产方法
CN103060686B (zh) * 2012-12-27 2015-04-15 江苏长强钢铁有限公司 高性能n80级非调制石油套管用无缝钢管及其制造方法
JP6169025B2 (ja) * 2013-03-29 2017-07-26 株式会社神戸製鋼所 耐水素誘起割れ性と靭性に優れた鋼板およびラインパイプ用鋼管
JP6165088B2 (ja) * 2013-03-29 2017-07-19 株式会社神戸製鋼所 耐水素誘起割れ性と溶接熱影響部の靭性に優れた鋼板およびラインパイプ用鋼管
JP6032166B2 (ja) * 2013-09-20 2016-11-24 Ｊｆｅスチール株式会社 カルシウム添加鋼の耐水素誘起割れ特性の推定方法
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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5698415A (en) 1980-01-11 1981-08-07 Nippon Kokan Kk <Nkk> Steel making method
JPH06330139A (ja) 1993-05-26 1994-11-29 Nippon Steel Corp 溶接部の耐硫化物応力割れ性に優れたラインパイプ用鋼の溶製方法
JPH0931524A (ja) 1995-07-13 1997-02-04 Sumitomo Metal Ind Ltd 溶鋼のＣａ処理方法
JPH09209025A (ja) * 1996-02-06 1997-08-12 Sumitomo Metal Ind Ltd 溶接部の低温靱性に優れた耐ｈｉｃ鋼の製造方法
JP2001011528A (ja) 1999-06-24 2001-01-16 Kawasaki Steel Corp 耐水素誘起割れ性に優れた鋼の溶製法
JP2002060893A (ja) * 2000-08-18 2002-02-28 Sumitomo Metal Ind Ltd 耐硫化物応力腐食割れ性に優れた油井用鋼とその製造方法
JP2003313638A (ja) 2002-04-22 2003-11-06 Jfe Steel Kk 耐ｈｉｃ特性に優れた高強度鋼板及びその製造方法
JP2004124158A (ja) * 2002-10-01 2004-04-22 Sumitomo Metal Ind Ltd 継目無鋼管およびその製造方法
JP2004315963A (ja) * 2003-03-31 2004-11-11 Kobe Steel Ltd 溶接熱影響部の靭性に優れた鋼材およびその製法
JP2005060820A (ja) 2003-07-31 2005-03-10 Jfe Steel Kk 耐ｈｉｃ特性に優れたラインパイプ用高強度鋼板およびその製造方法
WO2005075694A1 (ja) 2004-02-04 2005-08-18 Sumitomo Metal Industries,Ltd. 耐ｈｉｃ性に優れたラインパイプ用鋼材及びその鋼材を用いて製造されるラインパイプ
JP2007277647A (ja) 2006-04-07 2007-10-25 Sumitomo Metal Ind Ltd 極低硫高清浄鋼の溶製方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT382639B (de) * 1985-04-26 1987-03-25 Voest Alpine Ag Verfahren zur herstellung von stahl aus eisenschwamm sowie anlage zur durchfuehrung des verfahrens
JP2999671B2 (ja) * 1994-06-14 2000-01-17 川崎製鉄株式会社 Ｃａ添加鋼の溶製方法
JPH08333619A (ja) * 1995-06-06 1996-12-17 Kawasaki Steel Corp 耐水素誘起割れ性に優れた鋼の製造方法
JP3250459B2 (ja) * 1996-06-25 2002-01-28 住友金属工業株式会社 溶接部の低温靱性に優れた耐ｈｉｃ鋼およびその製造方法
EP0881304B1 (en) * 1996-11-20 2002-10-23 Nippon Steel Corporation Method of vacuum decarburization/refining of molten steel and apparatus therefor
JP3885267B2 (ja) * 1997-01-29 2007-02-21 住友金属工業株式会社 耐水素誘起割れ性に優れた高清浄極低硫鋼の製造方法
RU2139943C1 (ru) 1998-06-04 1999-10-20 ОАО "Нижнетагильский металлургический комбинат" Способ получения высококачественной стали
US6264716B1 (en) * 1999-03-19 2001-07-24 Nupro Corporation Process for controlling the stirring energy delivered by a gas flowing through a liquid
JP2000319750A (ja) * 1999-05-10 2000-11-21 Kawasaki Steel Corp 溶接熱影響部靱性に優れた大入熱溶接用高張力鋼材
RU2228367C1 (ru) 2002-12-24 2004-05-10 ООО "Сорби стил" Способ производства низколегированной трубной стали
JP2007270178A (ja) * 2006-03-30 2007-10-18 Sumitomo Metal Ind Ltd 極低硫鋼の製造方法

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5698415A (en) 1980-01-11 1981-08-07 Nippon Kokan Kk <Nkk> Steel making method
JPH06330139A (ja) 1993-05-26 1994-11-29 Nippon Steel Corp 溶接部の耐硫化物応力割れ性に優れたラインパイプ用鋼の溶製方法
JPH0931524A (ja) 1995-07-13 1997-02-04 Sumitomo Metal Ind Ltd 溶鋼のＣａ処理方法
JPH09209025A (ja) * 1996-02-06 1997-08-12 Sumitomo Metal Ind Ltd 溶接部の低温靱性に優れた耐ｈｉｃ鋼の製造方法
JP2001011528A (ja) 1999-06-24 2001-01-16 Kawasaki Steel Corp 耐水素誘起割れ性に優れた鋼の溶製法
JP2002060893A (ja) * 2000-08-18 2002-02-28 Sumitomo Metal Ind Ltd 耐硫化物応力腐食割れ性に優れた油井用鋼とその製造方法
JP2003313638A (ja) 2002-04-22 2003-11-06 Jfe Steel Kk 耐ｈｉｃ特性に優れた高強度鋼板及びその製造方法
JP2004124158A (ja) * 2002-10-01 2004-04-22 Sumitomo Metal Ind Ltd 継目無鋼管およびその製造方法
JP2004315963A (ja) * 2003-03-31 2004-11-11 Kobe Steel Ltd 溶接熱影響部の靭性に優れた鋼材およびその製法
JP2005060820A (ja) 2003-07-31 2005-03-10 Jfe Steel Kk 耐ｈｉｃ特性に優れたラインパイプ用高強度鋼板およびその製造方法
WO2005075694A1 (ja) 2004-02-04 2005-08-18 Sumitomo Metal Industries,Ltd. 耐ｈｉｃ性に優れたラインパイプ用鋼材及びその鋼材を用いて製造されるラインパイプ
JP2007277647A (ja) 2006-04-07 2007-10-25 Sumitomo Metal Ind Ltd 極低硫高清浄鋼の溶製方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010280940A (ja) * 2009-06-03 2010-12-16 Nippon Steel Corp 高清浄鋼の溶製方法
CN109022682A (zh) * 2018-08-13 2018-12-18 林州凤宝管业有限公司 一种vd钢的生产方法

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CA2689522C (en) 2011-06-28
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