JPS54130465A - Manufacture of expansion type exhaust pipe - Google Patents

Manufacture of expansion type exhaust pipe

Info

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
Application number
JP3790678A
Other languages
Japanese (ja)
Inventor
Tomoji Sakai
Katsujiro Tachikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP3790678A priority Critical patent/JPS54130465A/en
Publication of JPS54130465A publication Critical patent/JPS54130465A/en
Pending legal-status Critical Current

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
JP3790678A 1978-03-31 1978-03-31 Manufacture of expansion type exhaust pipe Pending JPS54130465A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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