JPS5770097A - Structure of butt welded joint of pipe - Google Patents

Structure of butt welded joint of pipe

Info

Publication number
JPS5770097A
JPS5770097A JP14580280A JP14580280A JPS5770097A JP S5770097 A JPS5770097 A JP S5770097A JP 14580280 A JP14580280 A JP 14580280A JP 14580280 A JP14580280 A JP 14580280A JP S5770097 A JPS5770097 A JP S5770097A
Authority
JP
Japan
Prior art keywords
outside
welded joint
weld metal
butt welded
butt
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
JP14580280A
Other languages
Japanese (ja)
Inventor
Shizuka Shimanuki
Isao Masaoka
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 JP14580280A priority Critical patent/JPS5770097A/en
Publication of JPS5770097A publication Critical patent/JPS5770097A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE: To provide the structure of a butt welded joint of pipes generated with residual compressive stress or decreased with residual tensile stress in the inside and outside surfaces of the weld zone by using a material of the small thermal expansion coefft. for at least one of the inside and outside circumferences of weld metal.
CONSTITUTION: In welding of the butt groove of austenite stainless steel pipes 3 or the like, inconel which has the thermal expansion coefft. smaller than that of the adjacent other weld metal 2 is used for a root pass 1 and a final pass 4, and a coated electrode is used for the intermediate passes of the 2nd and subsequent layers, whereby the butt welded joint is manufatured. It is so formed that the sectional area of at least one of the inside and outside circumferential part in the groove section is made smaller than the sectional area of the adjacent weld metal. With this joint construction, residual compressive stress is formed in the inside surface of the weld zone in an as welded state, and low residual tensile stress is obtained in the outside surface as well.
COPYRIGHT: (C)1982,JPO&Japio
JP14580280A 1980-10-20 1980-10-20 Structure of butt welded joint of pipe Pending JPS5770097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14580280A JPS5770097A (en) 1980-10-20 1980-10-20 Structure of butt welded joint of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14580280A JPS5770097A (en) 1980-10-20 1980-10-20 Structure of butt welded joint of pipe

Publications (1)

Publication Number Publication Date
JPS5770097A true JPS5770097A (en) 1982-04-30

Family

ID=15393484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14580280A Pending JPS5770097A (en) 1980-10-20 1980-10-20 Structure of butt welded joint of pipe

Country Status (1)

Country Link
JP (1) JPS5770097A (en)

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