JPS5499047A - Repair welding method for austenitic stainless steel tube - Google Patents
Repair welding method for austenitic stainless steel tubeInfo
- Publication number
- JPS5499047A JPS5499047A JP527078A JP527078A JPS5499047A JP S5499047 A JPS5499047 A JP S5499047A JP 527078 A JP527078 A JP 527078A JP 527078 A JP527078 A JP 527078A JP S5499047 A JPS5499047 A JP S5499047A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- crack
- stress
- welding
- stainless steel
- 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
- Arc Welding In General (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To prevent outward effluence of corrosive medium, by covering the tube outer circumference face of zone to be welded of butt welding structure exposed the tube inner face in corrosive environment, with restraint parts made of metal or alloy, not bringing about stress corrosion crack and attaching by welding.
CONSTITUTION: Deposition area of Cr carbide is produced around the deposited metal 2 at weld zone of the austenitic steel tube 1 by the high temperature of welding and the corrosion crack 4 is produced under a specific corrosive environment when stress is given on the above part. In order to repair it, double structure metal restraint parts piled the mild steel or low alloy steel 7 having higher strength and lower thermal expansion than low carbon stainless steel, on the low carbon stainless steel parts 5 difficult to bring about stress corrosion crack, is heated at 300W400°C and is attached by welding on the tube 1 covering the cooled tube 1 passing through cooling medium in the tube 1. By the above process, residual stress neighboring the crack 4 of the tube 1 is transferred to compression stress and expansion of the crack 4 is prevented and effluence of corrosive medium is obstructed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP527078A JPS5499047A (en) | 1978-01-23 | 1978-01-23 | Repair welding method for austenitic stainless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP527078A JPS5499047A (en) | 1978-01-23 | 1978-01-23 | Repair welding method for austenitic stainless steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5499047A true JPS5499047A (en) | 1979-08-04 |
Family
ID=11606528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP527078A Pending JPS5499047A (en) | 1978-01-23 | 1978-01-23 | Repair welding method for austenitic stainless steel tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5499047A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184597A (en) * | 1981-05-11 | 1982-11-13 | Mitsubishi Electric Corp | Compressor |
| CN108127257A (en) * | 2017-12-21 | 2018-06-08 | 中广核工程有限公司 | In-service nuclear power station main equipment safe end weld defect restorative procedure |
-
1978
- 1978-01-23 JP JP527078A patent/JPS5499047A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184597A (en) * | 1981-05-11 | 1982-11-13 | Mitsubishi Electric Corp | Compressor |
| CN108127257A (en) * | 2017-12-21 | 2018-06-08 | 中广核工程有限公司 | In-service nuclear power station main equipment safe end weld defect restorative procedure |
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