JPS5443865A - Explosive pipe expanding method - Google Patents

Explosive pipe expanding method

Info

Publication number
JPS5443865A
JPS5443865A JP10998477A JP10998477A JPS5443865A JP S5443865 A JPS5443865 A JP S5443865A JP 10998477 A JP10998477 A JP 10998477A JP 10998477 A JP10998477 A JP 10998477A JP S5443865 A JPS5443865 A JP S5443865A
Authority
JP
Japan
Prior art keywords
explosives
pipe
explosive
pipe expanding
expanding method
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
JP10998477A
Other languages
Japanese (ja)
Inventor
Shigeru Tominaga
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.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP10998477A priority Critical patent/JPS5443865A/en
Publication of JPS5443865A publication Critical patent/JPS5443865A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the crack of the pipe in the explosive expanding work, by weakening the power of explosion at the end of the explosives, when the explosive expansion is carried out.
CONSTITUTION: When the pipe 2 is expanded using the explosives 1 on purpose to pressure weld the pipe 2 to the tube sheet 3, the tip part of explosives 1 is formed into a conical part 4, for instance, so as to weaken the power of explosion. The longer the length of the conical part 4 is, the larger the effect is; however, about 10mm or so is suitable for the practical purpose.
COPYRIGHT: (C)1979,JPO&Japio
JP10998477A 1977-09-14 1977-09-14 Explosive pipe expanding method Pending JPS5443865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10998477A JPS5443865A (en) 1977-09-14 1977-09-14 Explosive pipe expanding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10998477A JPS5443865A (en) 1977-09-14 1977-09-14 Explosive pipe expanding method

Publications (1)

Publication Number Publication Date
JPS5443865A true JPS5443865A (en) 1979-04-06

Family

ID=14524121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10998477A Pending JPS5443865A (en) 1977-09-14 1977-09-14 Explosive pipe expanding method

Country Status (1)

Country Link
JP (1) JPS5443865A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021012136A1 (en) * 2019-07-22 2021-01-28 中国石油大学(华东) Method for calculating internal explosion load rate based on progressive extension distance of pipeline cracks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021012136A1 (en) * 2019-07-22 2021-01-28 中国石油大学(华东) Method for calculating internal explosion load rate based on progressive extension distance of pipeline cracks
US11566987B1 (en) 2019-07-22 2023-01-31 China University Of Petroleum (East China) Method for calculating internal explosion load speed based on incremental crack growth distance of pipeline

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