JPS5492542A - Welding method for circumference of pipe - Google Patents

Welding method for circumference of pipe

Info

Publication number
JPS5492542A
JPS5492542A JP16003777A JP16003777A JPS5492542A JP S5492542 A JPS5492542 A JP S5492542A JP 16003777 A JP16003777 A JP 16003777A JP 16003777 A JP16003777 A JP 16003777A JP S5492542 A JPS5492542 A JP S5492542A
Authority
JP
Japan
Prior art keywords
pipes
electrodes
face
placed under
pipe
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
JP16003777A
Other languages
Japanese (ja)
Inventor
Makoto Kikushima
Toshio Yada
Uhachiro Nakamura
Sakae Tomidokoro
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP16003777A priority Critical patent/JPS5492542A/en
Publication of JPS5492542A publication Critical patent/JPS5492542A/en
Pending legal-status Critical Current

Links

Landscapes

  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

PURPOSE: To make possible the electric current to be easily concentrated at the end face of the pipe on purpose to contrive to improve the production efficiency, by placing both ends of pipes respectively shifting 180 degrees in the direction of circumference so as to face each other with different polarity, and then, by contacting the electrodes.
CONSTITUTION: Electrodes 5W8 are contacted with the pipes 1 and 2 whose circumferential positions are shifted by 180 degrees. Hereupon, electrodes 5 and 8 are placed under the same polarity, and electrodes 6 and 7 are placed under the opposite polarity against electrodes 5 and 8. When the pipes 1 and 2 are to be pressure welded, the distance between pipes 1 and 2 is settled near, and the electrodes 5W8 are respectively contacted to the end faces of pipes 1 and 2; and then, electrodes 5W8 are rotated, and at the same time, the high frequency power source 4 is actuated. Hereby, the end faces of pipes 1 and 2 are heated and are placed under the condition that the pressure welding can be performed; therefore, the high frequency current is reduced and the pressure welding of pipes 1 and 2 is performed. According to this method, the directions of current flowing through the end faces of pipes 1 and 2 become opposite each other, and the current becomes easily flowable concentrating at the end face of the pipe, so that the heating efficiency can be improved.
COPYRIGHT: (C)1979,JPO&Japio
JP16003777A 1977-12-29 1977-12-29 Welding method for circumference of pipe Pending JPS5492542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16003777A JPS5492542A (en) 1977-12-29 1977-12-29 Welding method for circumference of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16003777A JPS5492542A (en) 1977-12-29 1977-12-29 Welding method for circumference of pipe

Publications (1)

Publication Number Publication Date
JPS5492542A true JPS5492542A (en) 1979-07-21

Family

ID=15706564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16003777A Pending JPS5492542A (en) 1977-12-29 1977-12-29 Welding method for circumference of pipe

Country Status (1)

Country Link
JP (1) JPS5492542A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63502748A (en) * 1986-01-09 1988-10-13 ジ・アップジョン・カンパニ− fake rabies virus vaccine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63502748A (en) * 1986-01-09 1988-10-13 ジ・アップジョン・カンパニ− fake rabies virus vaccine

Similar Documents

Publication Publication Date Title
ES8207454A1 (en) Apparatus and methods for use in welding
GB1014557A (en) Improvements in or relating to devices for use in high frequency electric current welding
JPS5492542A (en) Welding method for circumference of pipe
US3832509A (en) Split-type magnetic field concentrator
DE3479530D1 (en) Electrode system for the measurement of corrosion rate
JPS564374A (en) Submerged arc welding method
US3631524A (en) Arrangement for increasing the transfer of electrical power in the welding of pipes by induced currents
JPS5699087A (en) Method and device for plasma arc pressure welding
GB982337A (en) Improvements in or relating to pipe seam welding apparatus
JPS5555823A (en) Heater for welding polybutene-1 resin pipe
JPS54150342A (en) Circular arc welding method
SU308620A1 (en) Method of contact joint welding
JPS53114754A (en) Method and apparatus for welding
JPS5540052A (en) Spot welding method of hexagonal nut
JPS57115983A (en) Resistance welding method
JPS57178822A (en) Method of welding ethylene tetrafluoride by high- frequency resistance
JPS5418458A (en) Welding method for electric welded tube
JPS57100885A (en) Method and device for high frequency electro-unite welding
JPS528544A (en) High frequency heating method
JPS56161619A (en) Oil-immersed transformer
JPS5367611A (en) Annealing method for welded part of electrically seam welded steel pipe
JPS57130787A (en) Electric resistance welding method
Kalev et al. Calculation of Temperature Fields at Welding by Magnet-Controlled Arc With the Changing in Time Power
JPS53114752A (en) Arc welding method
Syrovatka et al. Pressure Welding of Pipes to Plates Using Rotating Arc(Heating)