JPS56144868A - Production of internally overlaid elbow - Google Patents

Production of internally overlaid elbow

Info

Publication number
JPS56144868A
JPS56144868A JP4807680A JP4807680A JPS56144868A JP S56144868 A JPS56144868 A JP S56144868A JP 4807680 A JP4807680 A JP 4807680A JP 4807680 A JP4807680 A JP 4807680A JP S56144868 A JPS56144868 A JP S56144868A
Authority
JP
Japan
Prior art keywords
overlay
elbow
weld metal
welding
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
JP4807680A
Other languages
Japanese (ja)
Inventor
Yasufumi Kunimoto
Takao Adachi
Masaru Kanetani
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.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works 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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP4807680A priority Critical patent/JPS56144868A/en
Publication of JPS56144868A publication Critical patent/JPS56144868A/en
Pending legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To automate work, reduce time and improve quality by specifying the composition of overlaying weld metal and overlay-welding the same in a straight- pipe state then bending the pipe.
CONSTITUTION: The inside surface of a straight pipe is overlay-welded in such a manner that the composition of the weld metal consists of 18W22% Cr equiv. and 9W16 Ni equiv. and ≤10% ferrite in Schaeffler's diagram. A straight pipe 4 having this overlay weld metal 5 is formed to an elbow 6 of a one-piece shape. If the overlay weld mtal is within the above-described composition range, cracking by bending does not occur. Since the overlay welding of the inside surface can be made in the straight pipe state in this way, this method is easily adaptable to automatic welding, and no skill is required for the work.
COPYRIGHT: (C)1981,JPO&Japio
JP4807680A 1980-04-14 1980-04-14 Production of internally overlaid elbow Pending JPS56144868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4807680A JPS56144868A (en) 1980-04-14 1980-04-14 Production of internally overlaid elbow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4807680A JPS56144868A (en) 1980-04-14 1980-04-14 Production of internally overlaid elbow

Publications (1)

Publication Number Publication Date
JPS56144868A true JPS56144868A (en) 1981-11-11

Family

ID=12793246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4807680A Pending JPS56144868A (en) 1980-04-14 1980-04-14 Production of internally overlaid elbow

Country Status (1)

Country Link
JP (1) JPS56144868A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069573A1 (en) * 2011-11-08 2013-05-16 株式会社フジコー Curved surface weld overlay method and lance manufacturing method employing same
CN103170810A (en) * 2013-04-17 2013-06-26 二重集团（德阳）重型装备股份有限公司 Bead-welding method of inner wall of 90-degree bent pipe
CN103386556A (en) * 2013-07-29 2013-11-13 张家港化工机械股份有限公司 Surfacing welding method for inner wall of 90-degree elbow of shift converter
CN106238866B (en) * 2016-08-29 2018-07-31 东方电气集团东方锅炉股份有限公司 Ni-based membrane panel welding method
CN114309127A (en) * 2020-09-29 2022-04-12 郑州万达重工股份有限公司 Inner wall surfacing small-bending-radius bent pipe and forming method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53100150A (en) * 1977-02-14 1978-09-01 Kobe Steel Ltd Method and apparatus for bent tube welding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53100150A (en) * 1977-02-14 1978-09-01 Kobe Steel Ltd Method and apparatus for bent tube welding

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069573A1 (en) * 2011-11-08 2013-05-16 株式会社フジコー Curved surface weld overlay method and lance manufacturing method employing same
CN103170810A (en) * 2013-04-17 2013-06-26 二重集团（德阳）重型装备股份有限公司 Bead-welding method of inner wall of 90-degree bent pipe
CN103386556A (en) * 2013-07-29 2013-11-13 张家港化工机械股份有限公司 Surfacing welding method for inner wall of 90-degree elbow of shift converter
CN106238866B (en) * 2016-08-29 2018-07-31 东方电气集团东方锅炉股份有限公司 Ni-based membrane panel welding method
CN114309127A (en) * 2020-09-29 2022-04-12 郑州万达重工股份有限公司 Inner wall surfacing small-bending-radius bent pipe and forming method thereof
CN114309127B (en) * 2020-09-29 2023-09-26 郑州万达重工股份有限公司 Inner wall surfacing small bending radius bent pipe and forming method thereof

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