JPS551906A - Manufacture of curved multilayer pipe - Google Patents
Manufacture of curved multilayer pipeInfo
- Publication number
- JPS551906A JPS551906A JP7348278A JP7348278A JPS551906A JP S551906 A JPS551906 A JP S551906A JP 7348278 A JP7348278 A JP 7348278A JP 7348278 A JP7348278 A JP 7348278A JP S551906 A JPS551906 A JP S551906A
- Authority
- JP
- Japan
- Prior art keywords
- blank
- liquid
- multilayer pipe
- beginning end
- freezed
- 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
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
PURPOSE: To manufacture the high accurate curved multilayer pipe at good producibility, by freezing the freezable liquid filled in the respective gap of the multilayer pipe blank being constituted by inserting the inner pipe of smaller diameter into the outer pipe of larger diameter, and then, by bending the multilayer pipe blank together with the freezed freezable liquid.
CONSTITUTION: The beginning end 21a, of the outer pipe blank 2a of larger diameter being cut into the specified length, is bent outward by the press to form the flange. The beginning end 31a of the inner pipe blank 3a is swelled out by the press machine so as to closely lie upon the inner circumference of the beginning end 21a of the blank 2a, and also, is bent outward to form the flange; after that, the blanks 2a, 3a, are fitted to overlap upon each other, and the beginning ends 21a, 31a, are spot welded to form the multilayer pipe blank 1a. At the beginning end of the blank 1a, the rubber made cap 4 is attached; and the freezably liquid 5, water for instance, is filled into the gap 3b and the ring type gap 13a, and is freezed at -20°CW-30°C; after that, the blank 1a is bent together with the freezed liquid 5 into the specified shape; next, the liquid 5 is molten, the cap 4 is detached, and the liquid 5 is discharged out.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7348278A JPS551906A (en) | 1978-06-17 | 1978-06-17 | Manufacture of curved multilayer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7348278A JPS551906A (en) | 1978-06-17 | 1978-06-17 | Manufacture of curved multilayer pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS551906A true JPS551906A (en) | 1980-01-09 |
Family
ID=13519533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7348278A Pending JPS551906A (en) | 1978-06-17 | 1978-06-17 | Manufacture of curved multilayer pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS551906A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62203620A (en) * | 1986-03-05 | 1987-09-08 | Eagle Ind Co Ltd | Manufacture of coil tube |
| JPS63112028A (en) * | 1986-10-29 | 1988-05-17 | Kawamura Seikan Kogyo Kk | Forming method for curved multiple pipe |
| EP0718053A1 (en) * | 1994-12-23 | 1996-06-26 | Metpela Oy | Method for freezing a liquid used for bending a double-wall pipe |
| JP2002070546A (en) * | 2000-09-04 | 2002-03-08 | Shinba Iron Works Inc | Exhaust system pipe mounted with catalyst pipe and its manufacturing method |
| JP2007175756A (en) * | 2005-12-28 | 2007-07-12 | Denso Corp | Method for manufacturing double pipe |
| CN110170806A (en) * | 2019-06-18 | 2019-08-27 | 江苏福莱斯伯汽车零件制造有限公司 | EGR cooling cycle pipe and its processing technology |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1096430A (en) * | 1966-06-24 | 1967-12-29 | Mullard Ltd | Improvements in or relating to cryogenic liquid transfer tubes and to methods of constructing them |
-
1978
- 1978-06-17 JP JP7348278A patent/JPS551906A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1096430A (en) * | 1966-06-24 | 1967-12-29 | Mullard Ltd | Improvements in or relating to cryogenic liquid transfer tubes and to methods of constructing them |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62203620A (en) * | 1986-03-05 | 1987-09-08 | Eagle Ind Co Ltd | Manufacture of coil tube |
| JPS63112028A (en) * | 1986-10-29 | 1988-05-17 | Kawamura Seikan Kogyo Kk | Forming method for curved multiple pipe |
| EP0718053A1 (en) * | 1994-12-23 | 1996-06-26 | Metpela Oy | Method for freezing a liquid used for bending a double-wall pipe |
| JP2002070546A (en) * | 2000-09-04 | 2002-03-08 | Shinba Iron Works Inc | Exhaust system pipe mounted with catalyst pipe and its manufacturing method |
| JP2007175756A (en) * | 2005-12-28 | 2007-07-12 | Denso Corp | Method for manufacturing double pipe |
| US7886420B2 (en) | 2005-12-28 | 2011-02-15 | Denso Corporation | Method of manufacturing double pipe |
| JP4698417B2 (en) * | 2005-12-28 | 2011-06-08 | 株式会社デンソー | Manufacturing method of double pipe |
| CN110170806A (en) * | 2019-06-18 | 2019-08-27 | 江苏福莱斯伯汽车零件制造有限公司 | EGR cooling cycle pipe and its processing technology |
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