SE8403928D0 - HEAT TREATMENT PROCEDURE FOR A PIPE PIPE - Google Patents
HEAT TREATMENT PROCEDURE FOR A PIPE PIPEInfo
- Publication number
- SE8403928D0 SE8403928D0 SE8403928A SE8403928A SE8403928D0 SE 8403928 D0 SE8403928 D0 SE 8403928D0 SE 8403928 A SE8403928 A SE 8403928A SE 8403928 A SE8403928 A SE 8403928A SE 8403928 D0 SE8403928 D0 SE 8403928D0
- Authority
- SE
- Sweden
- Prior art keywords
- pipe
- temperature
- stress
- induction
- corrosion
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 230000007797 corrosion Effects 0.000 abstract 4
- 238000005260 corrosion Methods 0.000 abstract 4
- 230000006698 induction Effects 0.000 abstract 3
- 230000035882 stress Effects 0.000 abstract 3
- 239000002826 coolant Substances 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 238000005336 cracking Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000008646 thermal stress Effects 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
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.
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 true SE8403928D0 (en) | 1984-07-31 |
| SE8403928L 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)
| 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 |
| EP0205828B1 (en) * | 1985-06-10 | 1989-10-18 | Hoesch Aktiengesellschaft | 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)
| 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 |
-
1983
- 1983-08-02 JP JP58141395A patent/JPS6033315A/en active Pending
-
1984
- 1984-06-05 ES ES533126A patent/ES8504367A1/en not_active Expired
- 1984-06-13 IT IT21397/84A patent/IT1174201B/en active
- 1984-06-20 DE DE19843422781 patent/DE3422781A1/en active Granted
- 1984-07-31 SE SE8403928A patent/SE462048B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3422781C2 (en) | 1987-11-12 |
| IT8421397A0 (en) | 1984-06-13 |
| DE3422781A1 (en) | 1985-02-21 |
| SE462048B (en) | 1990-04-30 |
| IT1174201B (en) | 1987-07-01 |
| ES533126A0 (en) | 1985-04-01 |
| ES8504367A1 (en) | 1985-04-01 |
| SE8403928L (en) | 1985-02-03 |
| JPS6033315A (en) | 1985-02-20 |
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Legal Events
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| NAL | Patent in force |
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