JPS5584292A - Relieving method of residual stress of pipe welded joints and device thereof - Google Patents
Relieving method of residual stress of pipe welded joints and device thereofInfo
- Publication number
- JPS5584292A JPS5584292A JP15647278A JP15647278A JPS5584292A JP S5584292 A JPS5584292 A JP S5584292A JP 15647278 A JP15647278 A JP 15647278A JP 15647278 A JP15647278 A JP 15647278A JP S5584292 A JPS5584292 A JP S5584292A
- Authority
- JP
- Japan
- Prior art keywords
- residual stress
- pressing rod
- force
- pipings
- pipes
- 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
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To ease the residual stress of joint parts and improve grain bounary type stress corrosion cracking resistance by applying even presure through an elastic material over the range of a fixed length to the inside surface of pipes with the welded joint part coupling the pipes in the axial direction as a center.
CONSTITUTION: The relieving device consisting of a pipe expanding medium 15 being elastic material, pressing rod 16, backup ring 17, sleeve 18 and hydraulic cylinder 19 is inserted into pipings 5, 6, after which the piston of the cylinder 19 is operated, by which force F is given to the pressing rod 16 to move it axially. As a result of this, the force is exerted to the pressing rod head 16a and the pipe expanding medium 15 is compressed in its axial direction. By the expansion in the radial direction along with this, the pipings 5, 6 and butt weld zone 7 are force expanded evenly in the radial direction, whereby plastic deformation is given and the residual stress to the weld zone is relieved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15647278A JPS5584292A (en) | 1978-12-20 | 1978-12-20 | Relieving method of residual stress of pipe welded joints and device thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15647278A JPS5584292A (en) | 1978-12-20 | 1978-12-20 | Relieving method of residual stress of pipe welded joints and device thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5584292A true JPS5584292A (en) | 1980-06-25 |
Family
ID=15628489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15647278A Pending JPS5584292A (en) | 1978-12-20 | 1978-12-20 | Relieving method of residual stress of pipe welded joints and device thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5584292A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57193292A (en) * | 1981-05-25 | 1982-11-27 | Kawasaki Heavy Ind Ltd | Treatment for welded joint part of pipe |
EP0597244A1 (en) * | 1992-11-13 | 1994-05-18 | Aea O'donnell, Inc. | Process for reducing tensile welding stresses in a nozzle in a nuclear reactor shell |
CN111940584A (en) * | 2020-06-16 | 2020-11-17 | 东莞材料基因高等理工研究院 | Device and method capable of reducing residual stress of butt weld of dissimilar metal cylinder |
-
1978
- 1978-12-20 JP JP15647278A patent/JPS5584292A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57193292A (en) * | 1981-05-25 | 1982-11-27 | Kawasaki Heavy Ind Ltd | Treatment for welded joint part of pipe |
JPS6235875B2 (en) * | 1981-05-25 | 1987-08-04 | Kawasaki Heavy Ind Ltd | |
EP0597244A1 (en) * | 1992-11-13 | 1994-05-18 | Aea O'donnell, Inc. | Process for reducing tensile welding stresses in a nozzle in a nuclear reactor shell |
CN111940584A (en) * | 2020-06-16 | 2020-11-17 | 东莞材料基因高等理工研究院 | Device and method capable of reducing residual stress of butt weld of dissimilar metal cylinder |
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