JPS55112196A - Repair welding method of pipe structure - Google Patents
Repair welding method of pipe structureInfo
- Publication number
- JPS55112196A JPS55112196A JP1829979A JP1829979A JPS55112196A JP S55112196 A JPS55112196 A JP S55112196A JP 1829979 A JP1829979 A JP 1829979A JP 1829979 A JP1829979 A JP 1829979A JP S55112196 A JPS55112196 A JP S55112196A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- weld zone
- stainless steel
- repair
- welding
- 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
- 238000003466 welding Methods 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- 230000007797 corrosion Effects 0.000 abstract 3
- 238000005260 corrosion Methods 0.000 abstract 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract 3
- 239000010935 stainless steel Substances 0.000 abstract 3
- 239000011324 bead Substances 0.000 abstract 2
- 238000005336 cracking Methods 0.000 abstract 2
- 229910001566 austenite Inorganic materials 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Landscapes
- Arc Welding In General (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE:To ease the stress corrosion cracking by removing the defect portion on the circumference of the pipe-form structure then make repair welding of this portion thence forming the restraint beads on both sides with said repair weld zone in- between over the entire circumference of the outside surface of the pipe. CONSTITUTION:After the region where a crack has been detected in the butt weld zone 2 of stainless steel 1 is removed, stainless steel 5 for repair is inserted and two- layer TIG welding is done by an welding rod of C<=0.035%. At this time, cooling water is introduced into the pipe inside surface to keep cooling the pipe inside surface at all times during welding. Thence, restraint beads 7 are formed on both sides of the repar weld zone 8 in order the entire part of the pipe inside surface to be compressed. This method is ideally suited for preventing the effluence of corrosion medium to the outside from the welded joint part of chemical plants and nuclear power apparatus piping, particularly austenite stainless steel pipe weld zone where stress corrosion cracking has occured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1829979A JPS55112196A (en) | 1979-02-21 | 1979-02-21 | Repair welding method of pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1829979A JPS55112196A (en) | 1979-02-21 | 1979-02-21 | Repair welding method of pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55112196A true JPS55112196A (en) | 1980-08-29 |
Family
ID=11967725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1829979A Pending JPS55112196A (en) | 1979-02-21 | 1979-02-21 | Repair welding method of pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55112196A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184597A (en) * | 1981-05-11 | 1982-11-13 | Mitsubishi Electric Corp | Compressor |
| JP2014055760A (en) * | 2012-08-10 | 2014-03-27 | Hitachi Ltd | Prevention maintenance repair method for weld of membrane panel for boiler and boiler device with this prevention maintenance repair |
| CN112345647A (en) * | 2021-01-05 | 2021-02-09 | 中南大学 | Surrounding rock loosening ring test method |
| CN115229322A (en) * | 2022-08-17 | 2022-10-25 | 中国航空制造技术研究院 | Electron beam repair welding method for double-layer plate structure |
| WO2024171723A1 (en) * | 2023-02-13 | 2024-08-22 | 三菱重工業株式会社 | Repair method, and method for manufacturing combustion cylinder |
-
1979
- 1979-02-21 JP JP1829979A patent/JPS55112196A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184597A (en) * | 1981-05-11 | 1982-11-13 | Mitsubishi Electric Corp | Compressor |
| JP2014055760A (en) * | 2012-08-10 | 2014-03-27 | Hitachi Ltd | Prevention maintenance repair method for weld of membrane panel for boiler and boiler device with this prevention maintenance repair |
| CN112345647A (en) * | 2021-01-05 | 2021-02-09 | 中南大学 | Surrounding rock loosening ring test method |
| CN112345647B (en) * | 2021-01-05 | 2021-04-23 | 中南大学 | A test method for loose circle of surrounding rock |
| CN115229322A (en) * | 2022-08-17 | 2022-10-25 | 中国航空制造技术研究院 | Electron beam repair welding method for double-layer plate structure |
| CN115229322B (en) * | 2022-08-17 | 2023-08-22 | 中国航空制造技术研究院 | Electron beam repair welding method for double-layer plate structure |
| WO2024171723A1 (en) * | 2023-02-13 | 2024-08-22 | 三菱重工業株式会社 | Repair method, and method for manufacturing combustion cylinder |
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Legal Events
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| LAPS | Cancellation because of no payment of annual fees |