JPS5510329A - Production of large-diameter thick-walled bent pipe - Google Patents
Production of large-diameter thick-walled bent pipeInfo
- Publication number
- JPS5510329A JPS5510329A JP8299478A JP8299478A JPS5510329A JP S5510329 A JPS5510329 A JP S5510329A JP 8299478 A JP8299478 A JP 8299478A JP 8299478 A JP8299478 A JP 8299478A JP S5510329 A JPS5510329 A JP S5510329A
- Authority
- JP
- Japan
- Prior art keywords
- bending
- thickness
- fabricated
- wall thickness
- inside 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000005452 bending Methods 0.000 abstract 10
- 238000000034 method Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
PURPOSE: To produce large-diameter thick-walled bent pipes through bending of ordinary methods by forming the wall thickness on the outer side of bending of a blank pipe to be bent larger than that of the inner side.
CONSTITUTION: A blank pipe P is fabricated to an inside diameter of d'=d-2c1. Thereafter, the inside diameter of the portion which receives bending is made eccentric and so fabricated that the wall thickness on the outer side of bending becomes t+c1 and that of the inner side of bending t-c2. The neck part n is so fabricated that its inside diameter d becomes d=D-2t. C1 is the thickness decreased by bending and C2 likewise the thickness increased by bending. Deviating the blank pipe P in wall thickness in this way and bending the same by ordinary methods enable the elbow E of an equal wall thickness over the entire part, i.e., thickness t to be produced. If the wall thicknesses are deviated, the rate of thickness reduction is smaller and the rate of thickness increase larger than those on bending of an equal thickness pipe, and therefore in the case of embodiment, C1 and C2 are determined by considering this. C1 and C2 may be readily calculated if the heating temperature at the fabrication and other bending conditions are determined.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8299478A JPS5510329A (en) | 1978-07-10 | 1978-07-10 | Production of large-diameter thick-walled bent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8299478A JPS5510329A (en) | 1978-07-10 | 1978-07-10 | Production of large-diameter thick-walled bent pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5510329A true JPS5510329A (en) | 1980-01-24 |
Family
ID=13789767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8299478A Pending JPS5510329A (en) | 1978-07-10 | 1978-07-10 | Production of large-diameter thick-walled bent pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5510329A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5825887A (en) * | 1981-08-10 | 1983-02-16 | Sumitomo Light Metal Ind Ltd | Production of welded pipe |
| JPS6033178A (en) * | 1983-07-30 | 1985-02-20 | スズキ株式会社 | Frame for motorcycle |
-
1978
- 1978-07-10 JP JP8299478A patent/JPS5510329A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5825887A (en) * | 1981-08-10 | 1983-02-16 | Sumitomo Light Metal Ind Ltd | Production of welded pipe |
| JPS6033178A (en) * | 1983-07-30 | 1985-02-20 | スズキ株式会社 | Frame for motorcycle |
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