JPS561224A - Hydraulic pipe expanding method for pipe - Google Patents
Hydraulic pipe expanding method for pipeInfo
- Publication number
- JPS561224A JPS561224A JP7471979A JP7471979A JPS561224A JP S561224 A JPS561224 A JP S561224A JP 7471979 A JP7471979 A JP 7471979A JP 7471979 A JP7471979 A JP 7471979A JP S561224 A JPS561224 A JP S561224A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- hydraulic
- pressure liquid
- hydraulic pipe
- pressure
- 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
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
PURPOSE: To prevent generation of the lap defect like as the crack, the turnup, etc., by heating the pressure liquid to maintain the temperature of the expanded part of the pipe at suitable temperatures, in case of applying the hydraulic pipe expanding work to the pipe of low toughness.
CONSTITUTION: In case of expanding the pipe 2 inserted into the tube plate 1, if the pipe 2 is made of an alloy possessing a low toughness at the normal temperature like as the ferrite stainless steel, the pressure liquid is heated by the heater 6 to about 80W100°C under control of the temperature controller 7; then the pressure of the pressure liquid is raised to high by the high pressure pump 8, and is fed to the hydraulic pipe expander inserted into the pipe so as to locate at the expanded position; hereby, the hydraulic pipe expanding work is performed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7471979A JPS561224A (en) | 1979-06-15 | 1979-06-15 | Hydraulic pipe expanding method for pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7471979A JPS561224A (en) | 1979-06-15 | 1979-06-15 | Hydraulic pipe expanding method for pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS561224A true JPS561224A (en) | 1981-01-08 |
Family
ID=13555301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7471979A Pending JPS561224A (en) | 1979-06-15 | 1979-06-15 | Hydraulic pipe expanding method for pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS561224A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180017647A (en) * | 2016-08-10 | 2018-02-21 | (주)월드이엔씨 | Pipe expanding apparatus and pipe expanding method using it |
-
1979
- 1979-06-15 JP JP7471979A patent/JPS561224A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180017647A (en) * | 2016-08-10 | 2018-02-21 | (주)월드이엔씨 | Pipe expanding apparatus and pipe expanding method using it |
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