JPS54114444A - Weld zone strength method improving of cylindrical body - Google Patents
Weld zone strength method improving of cylindrical bodyInfo
- Publication number
- JPS54114444A JPS54114444A JP2092478A JP2092478A JPS54114444A JP S54114444 A JPS54114444 A JP S54114444A JP 2092478 A JP2092478 A JP 2092478A JP 2092478 A JP2092478 A JP 2092478A JP S54114444 A JPS54114444 A JP S54114444A
- Authority
- JP
- Japan
- Prior art keywords
- peripherical
- cylindrical body
- electrode
- groove
- holder
- 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.)
- Granted
Links
Landscapes
- Arc Welding In General (AREA)
Abstract
PURPOSE: At butt welded portion and its neighborhood, outer peripherical surface is melted, and inner peripherical portion is cooled at the same time. The process causes residual compressive stress at the inner surface, thereby preventing stress corrosion cracking.
CONSTITUTION: A shallow groove 4 is cut through around the cylindrical body 1 at outer peripherical surface of sensitive structure 3, 3 of welding zone 2. Annular electrode-holder 6 having a plurality of discharge electrodes 5 which direct inwardly is arranged so that the electrode tips face the groove 4. Cooling medium 8 is fed from not shown source, and injected into the cylindrical body 1 to cool the inner surface. From each electrode 5 arc discharge is directed at the groove 4 to melt the sensitive structure 3 at its peripherical outer surface, while simultaneously the electrode-holder 6 is rotated in one direction. Meanwhile, innert gas is jetted through the nozzle 7 to prevent oxidation of the welding zone.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2092478A JPS54114444A (en) | 1978-02-27 | 1978-02-27 | Weld zone strength method improving of cylindrical body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2092478A JPS54114444A (en) | 1978-02-27 | 1978-02-27 | Weld zone strength method improving of cylindrical body |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54114444A true JPS54114444A (en) | 1979-09-06 |
JPS577838B2 JPS577838B2 (en) | 1982-02-13 |
Family
ID=12040762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2092478A Granted JPS54114444A (en) | 1978-02-27 | 1978-02-27 | Weld zone strength method improving of cylindrical body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54114444A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0220247U (en) * | 1988-07-25 | 1990-02-09 |
-
1978
- 1978-02-27 JP JP2092478A patent/JPS54114444A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS577838B2 (en) | 1982-02-13 |
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