SE8403928L - HEAT TREATMENT PROCEDURE FOR A PIPE PIPE - Google Patents

HEAT TREATMENT PROCEDURE FOR A PIPE PIPE

Info

Publication number
SE8403928L
SE8403928L SE8403928A SE8403928A SE8403928L SE 8403928 L SE8403928 L SE 8403928L SE 8403928 A SE8403928 A SE 8403928A SE 8403928 A SE8403928 A SE 8403928A SE 8403928 L SE8403928 L SE 8403928L
Authority
SE
Sweden
Prior art keywords
pipe
temperature
stress
induction
corrosion
Prior art date
Application number
SE8403928A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE462048B (en
SE8403928D0 (en
Inventor
T Tamai
Original Assignee
Ishikawajima Harima Heavy Ind
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 Ishikawajima Harima Heavy Ind filed Critical Ishikawajima Harima Heavy Ind
Publication of SE8403928D0 publication Critical patent/SE8403928D0/en
Publication of SE8403928L publication Critical patent/SE8403928L/en
Publication of SE462048B publication Critical patent/SE462048B/en

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
    • C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering

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)
  • General Induction Heating (AREA)

Abstract

PURPOSE:To, in a good reproducibility manner, generate uniform stress on the surface of the corrosion factor existence side, by a method wherein the heat treatment for making compressive stress remain on the surface of corrosion factor existence side, said surface is cooled by continuous flow of coolant and the other side surface is heated by induction. CONSTITUTION:The induction heater 2 coconcentrically surrounding the pipe 1 on the periphery of pipe line 1 is installed. Then, coolant 3 is continuously flowed through the pipe 1 and at the same time, the magnetic flux density acting on the pipe 1 is changed by changing the diameter of induction heating coil 4 of heater 2. By thus regulating total heat amount generated on the pipe 1 or the difference of generated heat amount between the outside surface and the inside surface of pipe 1, the periphery of pipe 1 is heated at a temperature lower than transformation temperature and the temperature difference generating thermal stress of yield point and more in different directions is given between said both surfaces. Then, after continuing said cooling and heating for a specified time until the distribution of temperature between said both surfaces is stabilized, the pipe inner surfce of which is strong against corrosion fatigue, stress corrosion cracking, etc., can be obtained by slowly cooling the pipe 1 down to ordinary temperature.
SE8403928A 1983-08-02 1984-07-31 HEAT TREATMENT DEVICE FOR INDUCTIVE HEATING OF A PIPE PIPE SE462048B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58141395A JPS6033315A (en) 1983-08-02 1983-08-02 Heat treatment of pipe line

Publications (3)

Publication Number Publication Date
SE8403928D0 SE8403928D0 (en) 1984-07-31
SE8403928L true SE8403928L (en) 1985-02-03
SE462048B SE462048B (en) 1990-04-30

Family

ID=15290992

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8403928A SE462048B (en) 1983-08-02 1984-07-31 HEAT TREATMENT DEVICE FOR INDUCTIVE HEATING OF A PIPE PIPE

Country Status (5)

Country Link
JP (1) JPS6033315A (en)
DE (1) DE3422781A1 (en)
ES (1) ES8504367A1 (en)
IT (1) IT1174201B (en)
SE (1) SE462048B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61264132A (en) * 1985-05-16 1986-11-22 Ishikawajima Harima Heavy Ind Co Ltd Improvement of residual stress of stainless steel pipe or the like
DE3666461D1 (en) * 1985-06-10 1989-11-23 Hoesch Ag Method and use of a steel for manufacturing steel pipes with a high resistance to acid gases
FR2678195A1 (en) * 1991-06-26 1992-12-31 Siderurgie Fse Inst Rech Method of inductively treating metal, especially steel, workpieces which are cracked or liable to be so
KR102420694B1 (en) * 2020-04-21 2022-07-14 주식회사 아이에스케이 A Magnetic Induction Type of an Apparatus for Heating a Conduit
CN111676351A (en) * 2020-07-29 2020-09-18 中国石油大学(华东) Heat treatment method for regulating residual stress by local temperature difference
DE102022204658A1 (en) 2022-05-12 2023-11-16 Robert Bosch Gesellschaft mit beschränkter Haftung Device for heating a liquid in a tube

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817807B2 (en) * 1976-04-27 1983-04-09 石川島播磨重工業株式会社 Heat treatment method for piping
US4229235A (en) * 1977-10-25 1980-10-21 Hitachi, Ltd. Heat-treating method for pipes
JPS54159316A (en) * 1978-06-07 1979-12-17 Hitachi Ltd Heat treating method for increasing piping strength
JPS569327A (en) * 1979-07-02 1981-01-30 Hitachi Ltd Heat treatment of piping

Also Published As

Publication number Publication date
IT8421397A0 (en) 1984-06-13
SE462048B (en) 1990-04-30
SE8403928D0 (en) 1984-07-31
DE3422781C2 (en) 1987-11-12
ES533126A0 (en) 1985-04-01
DE3422781A1 (en) 1985-02-21
ES8504367A1 (en) 1985-04-01
JPS6033315A (en) 1985-02-20
IT1174201B (en) 1987-07-01

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