JPS5478343A - Dc arc welder - Google Patents

Dc arc welder

Info

Publication number
JPS5478343A
JPS5478343A JP14563577A JP14563577A JPS5478343A JP S5478343 A JPS5478343 A JP S5478343A JP 14563577 A JP14563577 A JP 14563577A JP 14563577 A JP14563577 A JP 14563577A JP S5478343 A JPS5478343 A JP S5478343A
Authority
JP
Japan
Prior art keywords
welding
polarity
seam
torch
magnetic blow
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
JP14563577A
Other languages
Japanese (ja)
Inventor
Masayoshi Nukaga
Osamu Hirano
Keiji Takahashi
Toshinori Matsuo
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP14563577A priority Critical patent/JPS5478343A/en
Publication of JPS5478343A publication Critical patent/JPS5478343A/en
Pending legal-status Critical Current

Links

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  • Arc Welding Control (AREA)

Abstract

PURPOSE: The titled welder free from the magnetic blow-out constituted by installing the seam guide roller at the position nearer to the tip of the boom than the welding torch, and by arranging the power supply cable from the truck side so as to make changeable the polarity of the current.
CONSTITUTION: The polarity changer is switched to the reverse polarity, and the boom 4 is located on the welding seam 2 of the welded material 1, and then, the welding is worked according to the push welding method by the driving truck 3. The seam guide roller 6 is located further ahead of the welding torch 5 in the direction of welding, therefore, the followability of the welding seam 2 is made good. Besides, the welding seam 2 is located between two transfer poles 7, so that the stability of travel is also good. Since the power supply cable is located at the back of the torch 5, the magnetic blow-out due to the magnetic field generated in the unwelded zone is prevented, and the stable welding can be worked. After finishing the welding work, the polarity is changed to normal by the polarity changer, and the arc is struck for about 3W5 seconds; hereby, the residual magnetism is removed from the welded material 1, and the magnetic blow-out does not occur in the case of welding of the sealing groove.
COPYRIGHT: (C)1979,JPO&Japio
JP14563577A 1977-12-06 1977-12-06 Dc arc welder Pending JPS5478343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14563577A JPS5478343A (en) 1977-12-06 1977-12-06 Dc arc welder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14563577A JPS5478343A (en) 1977-12-06 1977-12-06 Dc arc welder

Publications (1)

Publication Number Publication Date
JPS5478343A true JPS5478343A (en) 1979-06-22

Family

ID=15389559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14563577A Pending JPS5478343A (en) 1977-12-06 1977-12-06 Dc arc welder

Country Status (1)

Country Link
JP (1) JPS5478343A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120936A (en) * 1976-04-06 1977-10-11 Nippon Kokan Kk Method of erasing residual magnetism in welding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120936A (en) * 1976-04-06 1977-10-11 Nippon Kokan Kk Method of erasing residual magnetism in welding

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