JPS5548491A - Penetration forming welding method for large-diameter steel tube - Google Patents

Penetration forming welding method for large-diameter steel tube

Info

Publication number
JPS5548491A
JPS5548491A JP11932578A JP11932578A JPS5548491A JP S5548491 A JPS5548491 A JP S5548491A JP 11932578 A JP11932578 A JP 11932578A JP 11932578 A JP11932578 A JP 11932578A JP S5548491 A JPS5548491 A JP S5548491A
Authority
JP
Japan
Prior art keywords
route
inert gas
steel tube
welding method
diameter steel
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
JP11932578A
Other languages
Japanese (ja)
Inventor
Motoji Taki
Hiroshi Miyake
Satoshi Ogura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11932578A priority Critical patent/JPS5548491A/en
Publication of JPS5548491A publication Critical patent/JPS5548491A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make back weld penetration even by carrying out welding by flowing inert gas through a hollow, by forming a hollow route by butting groove faces mutually.
CONSTITUTION: Route surfaces 2 of groove faces of large-diameter pipes 1 and 1' are butted each other to form route 3. Next, while inert gas is flowed through route 3, arc 6 is generated by tungsten electrode 5 of TIG torch 4, thereby welding the both. At this time, the back penetration states of internal surfaces of pipes 1 and 1' are controlled by adjusting the feed amount of inert gas flowing through route 3.
COPYRIGHT: (C)1980,JPO&Japio
JP11932578A 1978-09-29 1978-09-29 Penetration forming welding method for large-diameter steel tube Pending JPS5548491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11932578A JPS5548491A (en) 1978-09-29 1978-09-29 Penetration forming welding method for large-diameter steel tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11932578A JPS5548491A (en) 1978-09-29 1978-09-29 Penetration forming welding method for large-diameter steel tube

Publications (1)

Publication Number Publication Date
JPS5548491A true JPS5548491A (en) 1980-04-07

Family

ID=14758664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11932578A Pending JPS5548491A (en) 1978-09-29 1978-09-29 Penetration forming welding method for large-diameter steel tube

Country Status (1)

Country Link
JP (1) JPS5548491A (en)

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