JPS54130465A - Manufacture of expansion type exhaust pipe - Google Patents
Manufacture of expansion type exhaust pipeInfo
- Publication number
- JPS54130465A JPS54130465A JP3790678A JP3790678A JPS54130465A JP S54130465 A JPS54130465 A JP S54130465A JP 3790678 A JP3790678 A JP 3790678A JP 3790678 A JP3790678 A JP 3790678A JP S54130465 A JPS54130465 A JP S54130465A
- Authority
- JP
- Japan
- Prior art keywords
- blank
- exhaust pipe
- expansion type
- annealing
- type exhaust
- 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
- Exhaust Silencers (AREA)
Abstract
PURPOSE: To prevent the cracking, and to cheaply manufacture the titled exhaust pipe, by annealing the cylindrical pipe blank, and then, by expanding a part of above pipe blank into a taper shape.
CONSTITUTION: After annealing the blank 1 being formed by seam welding, the blank 1 is held in the female die, and the interior of the blank is thrusted by the taper shape male die; hereby, a partial length of about 150mm of the blank 1 is expanded into a taper angle 2W3 degrees. Hereupon, the maximum rate of expansion {(D1-D0)/D0} becomes about 35%; however, since the material is being made readily extendible due to the annealing, the cracking is prevented. Addtionally, the aluminizing process is applid, and the expansion type exhaust pipe is finished. This method is applicable to any material and kind of the blank. According to this method, the tapered expansion type exhaust pipe, able to reduce the pneumatic noise, is cheaply manufactured.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3790678A JPS54130465A (en) | 1978-03-31 | 1978-03-31 | Manufacture of expansion type exhaust pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3790678A JPS54130465A (en) | 1978-03-31 | 1978-03-31 | Manufacture of expansion type exhaust pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54130465A true JPS54130465A (en) | 1979-10-09 |
Family
ID=12510576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3790678A Pending JPS54130465A (en) | 1978-03-31 | 1978-03-31 | Manufacture of expansion type exhaust pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54130465A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5314108A (en) * | 1991-12-02 | 1994-05-24 | Usui Kokusai Sangyo Kaisha Limited | Method of producing welded tube with excellent corrosion-resistant inner surface |
CN106881568A (en) * | 2017-03-10 | 2017-06-23 | 佛山市恩成五金实业有限公司 | A kind of processing technology of complicated abnormal shape pipe |
-
1978
- 1978-03-31 JP JP3790678A patent/JPS54130465A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5314108A (en) * | 1991-12-02 | 1994-05-24 | Usui Kokusai Sangyo Kaisha Limited | Method of producing welded tube with excellent corrosion-resistant inner surface |
CN106881568A (en) * | 2017-03-10 | 2017-06-23 | 佛山市恩成五金实业有限公司 | A kind of processing technology of complicated abnormal shape pipe |
CN106881568B (en) * | 2017-03-10 | 2019-12-03 | 佛山市恩成五金实业有限公司 | A kind of processing technology of complicated abnormal shape pipe |
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