JPS54153769A - Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation - Google Patents
Production of cylinder member having elevations on its inner or both faces from pipe with outer elevationInfo
- Publication number
- JPS54153769A JPS54153769A JP6315178A JP6315178A JPS54153769A JP S54153769 A JPS54153769 A JP S54153769A JP 6315178 A JP6315178 A JP 6315178A JP 6315178 A JP6315178 A JP 6315178A JP S54153769 A JPS54153769 A JP S54153769A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- oval
- elevation
- faces
- 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
- Forging (AREA)
Abstract
PURPOSE: For simple, good-yield production of cylindrical member having elevated portions on its inner and outer surfaces or only inner surface, a pipe having on its outer face an elevated portion is plastically deformed in an oval shape and pressed to contract pipe diameter in the oval major axis direction by use of plurally devided die.
CONSTITUTION: Centrifugal cast or build-up welded peripheral elevation T is pressured on the whole of its surface through back plate X, X. This forms the elevation T in a substantial oval shape and nearabout straight pipe S in a slight oval shape. To prevent excessive straight pipe S oval formation, a core metal P is inserted, as required. The minor axis H of the elevation T oval is made smaller than the die internal diameter D'. The oval shaped elevation T and near straight pipe is pressed in the major direction to contract its diameter, by use of a pair of half dies having semicircular faces that will combine to form a circle of the diameter D' of the die. Thus, the method produces pipe having elevated prtions on its inner and outer faces or only on inner faces.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6315178A JPS54153769A (en) | 1978-05-25 | 1978-05-25 | Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6315178A JPS54153769A (en) | 1978-05-25 | 1978-05-25 | Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54153769A true JPS54153769A (en) | 1979-12-04 |
JPS5546260B2 JPS5546260B2 (en) | 1980-11-21 |
Family
ID=13220943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6315178A Granted JPS54153769A (en) | 1978-05-25 | 1978-05-25 | Production of cylinder member having elevations on its inner or both faces from pipe with outer elevation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54153769A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57131004U (en) * | 1981-02-05 | 1982-08-16 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58161634A (en) * | 1982-03-20 | 1983-09-26 | Stanley Electric Co Ltd | Speed alarm device for vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52140461A (en) * | 1976-05-20 | 1977-11-24 | Koshin Giken Kk | Method and device for molding staged building up pipes |
-
1978
- 1978-05-25 JP JP6315178A patent/JPS54153769A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52140461A (en) * | 1976-05-20 | 1977-11-24 | Koshin Giken Kk | Method and device for molding staged building up pipes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57131004U (en) * | 1981-02-05 | 1982-08-16 |
Also Published As
Publication number | Publication date |
---|---|
JPS5546260B2 (en) | 1980-11-21 |
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