JPS5773133A - Production of electric welded steel pipe - Google Patents
Production of electric welded steel pipeInfo
- Publication number
- JPS5773133A JPS5773133A JP15054180A JP15054180A JPS5773133A JP S5773133 A JPS5773133 A JP S5773133A JP 15054180 A JP15054180 A JP 15054180A JP 15054180 A JP15054180 A JP 15054180A JP S5773133 A JPS5773133 A JP S5773133A
- Authority
- JP
- Japan
- Prior art keywords
- welded part
- steel pipe
- heat treatment
- residual stress
- welded
- 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.)
- Pending
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
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE:To obtain a high strength electric welded steel pipe which is less threattened with bending owing to fluctuations in climatic conditions and secular change and is suited for oil wells, etc. by subjecting the electric welded part of a steel pipe formed from a steel plate to local heat treatment in a specific temp. range. CONSTITUTION:A steel plate is formed to a tubular shape and is electrically welded. The electric welded part is subjected to local heat treatment at above the A3 transformation point and >=1,000 deg.C. The residual stress of the welded part is relieaved by this heat treatment. Particularly by the local heating of 900 deg.C. The difference between the residual stress of the welded part and the residual stress of the base metal part is virtually eliminated, and the mechanical strength distribution is made uniform in the circumferential direction of the pipe. Hence, the toughness of the welded part is improved and the preventive effect of the selective corrosion of the welded part is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15054180A JPS5773133A (en) | 1980-10-27 | 1980-10-27 | Production of electric welded steel pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15054180A JPS5773133A (en) | 1980-10-27 | 1980-10-27 | Production of electric welded steel pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5773133A true JPS5773133A (en) | 1982-05-07 |
Family
ID=15499115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15054180A Pending JPS5773133A (en) | 1980-10-27 | 1980-10-27 | Production of electric welded steel pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5773133A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021046673A (en) * | 2019-09-17 | 2021-03-25 | Jfeスチール株式会社 | Steel pipe pile joint, steel pipe pile, and construction method of steel pipe pile |
-
1980
- 1980-10-27 JP JP15054180A patent/JPS5773133A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021046673A (en) * | 2019-09-17 | 2021-03-25 | Jfeスチール株式会社 | Steel pipe pile joint, steel pipe pile, and construction method of steel pipe pile |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0261339B2 (en) | ||
SE8003567L (en) | PROCEDURAL KIT FOR MANUFACTURING STAINLESS, FERRITAUSTENITIC STEEL | |
US4731131A (en) | Method of subjecting welded structure to heat treatment | |
JPS5773133A (en) | Production of electric welded steel pipe | |
ATE44580T1 (en) | WELLHEAD STRUCTURE AND METHOD OF MANUFACTURE OF SUCH STRUCTURE. | |
JPS54138814A (en) | Thermo-mechanical treatment method for austenitic stainless steel pipe to give hot steam oxidation resistance | |
JPS58188531A (en) | Manufacture of hollow stabilizer | |
DE664929C (en) | Metal pipe and extrusion press with electrically heated sensor | |
JPS6431931A (en) | Production of curved tube made of heat-resistant centrifugal cast alloy | |
RU2112050C1 (en) | Method of pipe heat treatment | |
Guseva et al. | An X-Ray Study of the Substructure of Electrolytic Iron Coatings | |
JPS54116306A (en) | Heating method for steel pipe u-bend by applying electric current directly | |
JPS56169725A (en) | Manufacture of electrounite steel pipe for oil well | |
JPS542970A (en) | Manufacture of high strength, high toughness steel tube of special form | |
FR2525503B1 (en) | ||
JPS5527437A (en) | Production of small diameter electric welded steel tube | |
SU829390A1 (en) | Work for producing bimetallic tubes | |
JPS53131219A (en) | Heat treating method for high carbon steel wire | |
CN205152314U (en) | A nitrizing test device is assisted to electric pulse for cr12MoV steel | |
Yamura | Development of Heavy Wall High Strength Bent Pipe for Arctic Usage | |
Polukhin | Rheological Properties of Steel ShKh 15 | |
Lebedev | Thermal Straightening of Pipe Made of Maraging Steels | |
Wessling et al. | Properties and Applications of a Recently Developed Ferritic/Austenitic Steel Containing 0. 02% C, 22% Cr, 3% Mo and 0. 12% N in Comparison With Molybdenum-Alloyed Austenitic Steels | |
JPS57194213A (en) | Production of abrasion resistant steel pipe | |
Fletcher et al. | The Effect of a Free Edge on the Thermal Stresses in Quenched Steel Plates |