JPS56166324A - Production of high-strength seamless steel pipe of good weldability for middle temperature region - Google Patents

Production of high-strength seamless steel pipe of good weldability for middle temperature region

Info

Publication number
JPS56166324A
JPS56166324A JP6786480A JP6786480A JPS56166324A JP S56166324 A JPS56166324 A JP S56166324A JP 6786480 A JP6786480 A JP 6786480A JP 6786480 A JP6786480 A JP 6786480A JP S56166324 A JPS56166324 A JP S56166324A
Authority
JP
Japan
Prior art keywords
steel pipe
seamless steel
contg
temp
pcm value
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP6786480A
Other languages
Japanese (ja)
Other versions
JPS6151009B2 (en
Inventor
Seiji Ishimoto
Eiichi Yokoyama
Akio Ejima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP6786480A priority Critical patent/JPS56166324A/en
Publication of JPS56166324A publication Critical patent/JPS56166324A/en
Publication of JPS6151009B2 publication Critical patent/JPS6151009B2/ja
Granted legal-status Critical Current

Links

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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes

Abstract

PURPOSE:To produce a titled steel pipe which has extremely high strength at a middle temp. region and permits reduction in the thickness of the pipe by subjecting a seamless steel pipe of a low Pcm value contg. C, Si, Mn, Al and Mo and/or V respectively at prescribed proportions to direct hardening treatment. CONSTITUTION:A seamless steel pipe contg. by wt% 0.03-0.15% C, 0.01- 0.80% Si, 0.50-2.00% Mn, and 0.001-0.10% A, and contg. 0.01-0.30% Mo and/or 0.005-0.10% V is prepared. Further, this steel pipe has the composition of <=0.21% Pcm value expressed by the equation. Thence, this seamless steel pipe is directly hardened immediately after hot rolling; thereafter, it is tempered at the temp. above 600 deg.C and below the Ac1 transformation point. As a result, the Pcm value which is the index for hydrogen crack sensitivity at the welding of the steel pipe is reduced remarkably; therefore, on-site weldability is excellent, and in spite of the decreased C content in the components, the strength extremely higher than that of conventional steel pipes is obtained at a middle temp. region around 350 deg.C.
JP6786480A 1980-05-23 1980-05-23 Production of high-strength seamless steel pipe of good weldability for middle temperature region Granted JPS56166324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6786480A JPS56166324A (en) 1980-05-23 1980-05-23 Production of high-strength seamless steel pipe of good weldability for middle temperature region

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6786480A JPS56166324A (en) 1980-05-23 1980-05-23 Production of high-strength seamless steel pipe of good weldability for middle temperature region

Publications (2)

Publication Number Publication Date
JPS56166324A true JPS56166324A (en) 1981-12-21
JPS6151009B2 JPS6151009B2 (en) 1986-11-07

Family

ID=13357211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6786480A Granted JPS56166324A (en) 1980-05-23 1980-05-23 Production of high-strength seamless steel pipe of good weldability for middle temperature region

Country Status (1)

Country Link
JP (1) JPS56166324A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453986A (en) * 1982-10-07 1984-06-12 Amax Inc. Tubular high strength low alloy steel for oil and gas wells
US4474627A (en) * 1982-04-22 1984-10-02 Ugine Aciers Method of manufacturing steel bars and tubes with good mechanical characteristics
US4533405A (en) * 1982-10-07 1985-08-06 Amax Inc. Tubular high strength low alloy steel for oil and gas wells
US5873960A (en) * 1994-10-20 1999-02-23 Sumitomo Metal Industries, Ltd. Method and facility for manufacturing seamless steel pipe
US6024808A (en) * 1996-04-19 2000-02-15 Sumitomo Metal Industries, Ltd. Seamless steel pipe manufacturing method and equipment
WO2007013503A1 (en) * 2005-07-26 2007-02-01 Sumitomo Metal Industries, Ltd. Seamless steel pipe and method for producing same
JP2011513584A (en) * 2008-02-28 2011-04-28 ファウ・ウント・エム・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング High strength low alloy steel for seamless pipes with excellent weldability and corrosion resistance
WO2012108027A1 (en) * 2011-02-10 2012-08-16 住友金属工業株式会社 High-strength steel material for steam piping, and process for production thereof
CN103498105A (en) * 2013-09-26 2014-01-08 宝山钢铁股份有限公司 High-strength seamless steel tube for geological drilling and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152814A (en) * 1976-06-14 1977-12-19 Nippon Steel Corp Thermo-mechanical treatment of seamless steel pipe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152814A (en) * 1976-06-14 1977-12-19 Nippon Steel Corp Thermo-mechanical treatment of seamless steel pipe

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474627A (en) * 1982-04-22 1984-10-02 Ugine Aciers Method of manufacturing steel bars and tubes with good mechanical characteristics
US4453986A (en) * 1982-10-07 1984-06-12 Amax Inc. Tubular high strength low alloy steel for oil and gas wells
US4533405A (en) * 1982-10-07 1985-08-06 Amax Inc. Tubular high strength low alloy steel for oil and gas wells
US5873960A (en) * 1994-10-20 1999-02-23 Sumitomo Metal Industries, Ltd. Method and facility for manufacturing seamless steel pipe
US6024808A (en) * 1996-04-19 2000-02-15 Sumitomo Metal Industries, Ltd. Seamless steel pipe manufacturing method and equipment
WO2007013503A1 (en) * 2005-07-26 2007-02-01 Sumitomo Metal Industries, Ltd. Seamless steel pipe and method for producing same
JP2007031769A (en) * 2005-07-26 2007-02-08 Sumitomo Metal Ind Ltd Seamless steel tube and method for producing the same
US7815755B2 (en) 2005-07-26 2010-10-19 Sumitomo Metal Industries, Ltd. Seamless steel pipe and manufacturing method thereof
JP2011513584A (en) * 2008-02-28 2011-04-28 ファウ・ウント・エム・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング High strength low alloy steel for seamless pipes with excellent weldability and corrosion resistance
WO2012108027A1 (en) * 2011-02-10 2012-08-16 住友金属工業株式会社 High-strength steel material for steam piping, and process for production thereof
CN103498105A (en) * 2013-09-26 2014-01-08 宝山钢铁股份有限公司 High-strength seamless steel tube for geological drilling and preparation method thereof

Also Published As

Publication number Publication date
JPS6151009B2 (en) 1986-11-07

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