JPS5479142A - Repairing method for internal coat at weld zone of internally coated steel pipe - Google Patents
Repairing method for internal coat at weld zone of internally coated steel pipeInfo
- Publication number
- JPS5479142A JPS5479142A JP14610877A JP14610877A JPS5479142A JP S5479142 A JPS5479142 A JP S5479142A JP 14610877 A JP14610877 A JP 14610877A JP 14610877 A JP14610877 A JP 14610877A JP S5479142 A JPS5479142 A JP S5479142A
- Authority
- JP
- Japan
- Prior art keywords
- core
- expanded
- repairing material
- pipe
- coated 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 4
- 239000010959 steel Substances 0.000 title abstract 4
- 239000011162 core material Substances 0.000 abstract 7
- 239000000463 material Substances 0.000 abstract 5
- 239000012530 fluid Substances 0.000 abstract 3
- 238000002347 injection Methods 0.000 abstract 3
- 239000007924 injection Substances 0.000 abstract 3
- 239000011148 porous material Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
PURPOSE: To obtain the repaired portion with corrosion-resisting-property better than that of the parent pipe, by inserting the backing core into the pipe end, previously expanded and welded to joint, of the internally coated steel pipe, and by injecting the repairing material into the ring type chamber formed between the expanded portion and the core.
CONSTITUTION: The pipe end of the internally coated steel pipes 1 and 1' are expanded, and the injection pore 2 for the repairing material 5 and the gas vent 3 are installed at the steel pipes 6 and 6' of the expanded portion. The expanded pipe ends 6 and 6' are jointed by welding 8, and then, into which is inserted the backing core 4 where the deflection-preventing-steel-core-material 10 is buried over the internal surface of the unexpanded pipe end. The fluid is pressure sealed into the fluid bags 11 and 11' being held within the both ends of the core 4, so as to press the bags tightly against the internal surface of the unexpanded portion; hereby, the ring type chamber is formed between the expanded pipe end and the core 4. Into this ring type chamber, the repairing material 5 is injected from the injection port 2 so as to be filled up, and this injection is stopped when the repairing material 5 begins to overflow from the gas vent 3. After the repairing material 5 solidifies, the fluid bags 11 and 11' are deflated, the backing core 4 is pulled away, and the repairing work is completed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14610877A JPS5479142A (en) | 1977-12-07 | 1977-12-07 | Repairing method for internal coat at weld zone of internally coated steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14610877A JPS5479142A (en) | 1977-12-07 | 1977-12-07 | Repairing method for internal coat at weld zone of internally coated steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5479142A true JPS5479142A (en) | 1979-06-23 |
| JPS5642398B2 JPS5642398B2 (en) | 1981-10-05 |
Family
ID=15400323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14610877A Granted JPS5479142A (en) | 1977-12-07 | 1977-12-07 | Repairing method for internal coat at weld zone of internally coated steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5479142A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012076731A (en) * | 2010-09-06 | 2012-04-19 | Hitachi Ltd | Manufacturing method of bogie frame for rail car and hollow structure |
| KR101139756B1 (en) | 2009-11-10 | 2012-04-26 | 주식회사 다샘 | An anticorrosion lining method for the inside of the welded pipe by injection of anticorrosion fiber mold. |
-
1977
- 1977-12-07 JP JP14610877A patent/JPS5479142A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101139756B1 (en) | 2009-11-10 | 2012-04-26 | 주식회사 다샘 | An anticorrosion lining method for the inside of the welded pipe by injection of anticorrosion fiber mold. |
| JP2012076731A (en) * | 2010-09-06 | 2012-04-19 | Hitachi Ltd | Manufacturing method of bogie frame for rail car and hollow structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5642398B2 (en) | 1981-10-05 |
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