JPS55103233A - Discharge pipe-expanding method - Google Patents

Discharge pipe-expanding method

Info

Publication number
JPS55103233A
JPS55103233A JP909679A JP909679A JPS55103233A JP S55103233 A JPS55103233 A JP S55103233A JP 909679 A JP909679 A JP 909679A JP 909679 A JP909679 A JP 909679A JP S55103233 A JPS55103233 A JP S55103233A
Authority
JP
Japan
Prior art keywords
pipe
pressure
water
pressure medium
filament
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
Application number
JP909679A
Other languages
Japanese (ja)
Other versions
JPS6116538B2 (en
Inventor
Shigeo Sakamoto
Yoshihisa Nishikawa
Yasumi Nagura
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 Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP909679A priority Critical patent/JPS55103233A/en
Publication of JPS55103233A publication Critical patent/JPS55103233A/en
Publication of JPS6116538B2 publication Critical patent/JPS6116538B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: To let the tail of pipe coincide easily with the terminal line of water of pressure medium, by avoiding extreme restrictions of moving of water in the pipe axial direction, when expanding a pipe by evaporating the water of pressure medium with discharge energy and using this pressure of evaporation.
CONSTITUTION: A cartridge 8 containing water 9 of pressure medium is placed in a pipe 14 to be expanded, and a discharge energy charged in a capacitor 4 is instantly passed into a filament 11 placed therein by closing a switch 5. The filament is instantly fused and evaporated by a large current to evaporate the water 9 of pressure medium with its heat, so that the pipe 14 is expanded with its pressure F1 to be pressed against a pipe plate 15. At this time, the end cap 10 of the cartridge 8 is made of a thin sheet 17 of polyethylene material. This thin sheet is easily broken by the pressure of steam. As a result, the pressure medium is changed from liquid to nearly gas, dropping the pressure transmitting efficiency, so that the expanding effect of the pipe 14 due to composite force F2 in oblique direction with the force F3 in the pipe axial direction may be reduced. Thus, the positions of tail parts coincide, and the adjustment of pipe expansion length may be easier.
COPYRIGHT: (C)1980,JPO&Japio
JP909679A 1979-01-31 1979-01-31 Discharge pipe-expanding method Granted JPS55103233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP909679A JPS55103233A (en) 1979-01-31 1979-01-31 Discharge pipe-expanding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP909679A JPS55103233A (en) 1979-01-31 1979-01-31 Discharge pipe-expanding method

Publications (2)

Publication Number Publication Date
JPS55103233A true JPS55103233A (en) 1980-08-07
JPS6116538B2 JPS6116538B2 (en) 1986-05-01

Family

ID=11711074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP909679A Granted JPS55103233A (en) 1979-01-31 1979-01-31 Discharge pipe-expanding method

Country Status (1)

Country Link
JP (1) JPS55103233A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5861320U (en) * 1981-10-19 1983-04-25 三菱重工業株式会社 Cartridge for discharge tube expansion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5861320U (en) * 1981-10-19 1983-04-25 三菱重工業株式会社 Cartridge for discharge tube expansion

Also Published As

Publication number Publication date
JPS6116538B2 (en) 1986-05-01

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