JPS55117515A - Manufacture of double-ply pipe - Google Patents
Manufacture of double-ply pipeInfo
- Publication number
- JPS55117515A JPS55117515A JP2307679A JP2307679A JPS55117515A JP S55117515 A JPS55117515 A JP S55117515A JP 2307679 A JP2307679 A JP 2307679A JP 2307679 A JP2307679 A JP 2307679A JP S55117515 A JPS55117515 A JP S55117515A
- Authority
- JP
- Japan
- Prior art keywords
- inner pipe
- pipe
- hydraulic
- cooling medium
- diameter
- 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
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
PURPOSE: To make possible the manufacture of high accurate double-ply pipe comprising the tightly bound outer pipe and inner pipe over entire length, by giving first the thermal contraction and next the hydraulic expansion to the inner pipe, and then, by causing the thermal expansion in the inner pipe.
CONSTITUTION: The inner pipe 2 made of stainless steel, etc., is inserted into the outer pipe 1 made of carbon steel, etc. The hydraulic-cooling medium is introduced into inside 3 of the inner pipe 2 through the hole 5 of the plug 4 in order to cause the thermal contraction in diameter of the inner pipe 2. Next, the pressure of hydraulic-cooling medium is raised to expand the inner pipe 2; hereby, the outer pipe 1 is also simultaneously expanded together with the inner pipe 2. When the diameter becomes the set value, the pressure rise of the medium is interrupted, and the hydraulic-cooling medium is discharged from the inner pipe 2; hereafter, the diameter of inner pipe 2 is further increased owing to the thermal expansion, and the interference is formed between the outer pipe 1 and the inner pipe 2. According to this method, various kinds of material can be combined, and the tightening becomes uniform, resulting in the improvement of the product yield.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2307679A JPS55117515A (en) | 1979-02-28 | 1979-02-28 | Manufacture of double-ply pipe |
| CA000346285A CA1139923A (en) | 1979-02-28 | 1980-02-22 | Method of producing multiple-wall composite pipes |
| US06/124,215 US4332073A (en) | 1979-02-28 | 1980-02-25 | Method of producing multiple-wall composite pipes |
| EP80300585A EP0015712B1 (en) | 1979-02-28 | 1980-02-27 | Method of producing multiple-wall composite pipes |
| DE8080300585T DE3061957D1 (en) | 1979-02-28 | 1980-02-27 | Method of producing multiple-wall composite pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2307679A JPS55117515A (en) | 1979-02-28 | 1979-02-28 | Manufacture of double-ply pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55117515A true JPS55117515A (en) | 1980-09-09 |
| JPS5648254B2 JPS5648254B2 (en) | 1981-11-14 |
Family
ID=12100305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2307679A Granted JPS55117515A (en) | 1979-02-28 | 1979-02-28 | Manufacture of double-ply pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55117515A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187581A (en) * | 1986-02-12 | 1987-08-15 | Mitsubishi Heavy Ind Ltd | Production of multiple cylindrical member |
| JPS6349330A (en) * | 1986-08-12 | 1988-03-02 | バルケ−デユル・アクチエンゲゼルシヤフト | Method and device for mounting member onto hollow body |
-
1979
- 1979-02-28 JP JP2307679A patent/JPS55117515A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187581A (en) * | 1986-02-12 | 1987-08-15 | Mitsubishi Heavy Ind Ltd | Production of multiple cylindrical member |
| JPS6349330A (en) * | 1986-08-12 | 1988-03-02 | バルケ−デユル・アクチエンゲゼルシヤフト | Method and device for mounting member onto hollow body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5648254B2 (en) | 1981-11-14 |
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