JPS54152639A - Repair welding method for steel pipe - Google Patents
Repair welding method for steel pipeInfo
- Publication number
- JPS54152639A JPS54152639A JP6096578A JP6096578A JPS54152639A JP S54152639 A JPS54152639 A JP S54152639A JP 6096578 A JP6096578 A JP 6096578A JP 6096578 A JP6096578 A JP 6096578A JP S54152639 A JPS54152639 A JP S54152639A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- steel pipe
- longer
- pipe
- value
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 4
- 239000010959 steel Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 238000003466 welding Methods 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
PURPOSE: To perfectly make the residual stress of the weld zone to be the compression stress in case of the local repair for the weld defects by means of the welding under water cooling for the inner surface of the pipe, by making the length of weld to be longer than the value to be obtained from the specified formula.
CONSTITUTION: The inner surface of the pipe is welded under water cooling, forming the groove at the part to be repaired of the butt welded steel pipe, so as to make the circumferential length l of this groove to be longer than the value obtained from the following formula. That is, the groove length l is made longer than the value to be obtained from l=45 logD×S1/S2 mm, in which S1 mm2 is the sectional area showing the groove shape of the original weld zone, S2mm2 is the sectional area showing the rewelded groove shape, and Dmm is the diameter of the steel pipe. Moreover, above groove is desired to be formed either along the original weld zone or leaving the first layer. Additionally, this method is desirable to be applied to the steel pipe made of the austenitic stainless steel.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6096578A JPS54152639A (en) | 1978-05-24 | 1978-05-24 | Repair welding method for steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6096578A JPS54152639A (en) | 1978-05-24 | 1978-05-24 | Repair welding method for steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54152639A true JPS54152639A (en) | 1979-12-01 |
Family
ID=13157629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6096578A Pending JPS54152639A (en) | 1978-05-24 | 1978-05-24 | Repair welding method for steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54152639A (en) |
-
1978
- 1978-05-24 JP JP6096578A patent/JPS54152639A/en active Pending
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