JPS56144864A - Welding method of square joint - Google Patents

Welding method of square joint

Info

Publication number
JPS56144864A
JPS56144864A JP4845280A JP4845280A JPS56144864A JP S56144864 A JPS56144864 A JP S56144864A JP 4845280 A JP4845280 A JP 4845280A JP 4845280 A JP4845280 A JP 4845280A JP S56144864 A JPS56144864 A JP S56144864A
Authority
JP
Japan
Prior art keywords
electrodes
groove
welding
heat input
root face
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
JP4845280A
Other languages
Japanese (ja)
Inventor
Shigeru Tanaka
Shozo Takanokura
Naoki Okuda
Kaoru Hase
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.)
TOKYO TETSUKOTSU KIYOURIYOU SE
TOKYO TETSUKOTSU KYORYO SEISAKUSHO KK
Kobe Steel Ltd
Original Assignee
TOKYO TETSUKOTSU KIYOURIYOU SE
TOKYO TETSUKOTSU KYORYO SEISAKUSHO KK
Kobe Steel 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 TOKYO TETSUKOTSU KIYOURIYOU SE, TOKYO TETSUKOTSU KYORYO SEISAKUSHO KK, Kobe Steel Ltd filed Critical TOKYO TETSUKOTSU KIYOURIYOU SE
Priority to JP4845280A priority Critical patent/JPS56144864A/en
Publication of JPS56144864A publication Critical patent/JPS56144864A/en
Pending legal-status Critical Current

Links

Landscapes

  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE: To reduce the number of passes, improve efficiency and prevent the occurrence of high temperature cracking and internal defects by welding the specific groove having a root face with multiple electrodes at large current and large heat input.
CONSTITUTION: A square joint part is subjected to edge preparation of a V- or Y shape satisfying 25W55° groove angles, is provided with a root face ranging 1W 10mm, and is welded at large current and large heat input by using ≥2 pieces of electrodes. The groove having this root face can be filled sufficiently with a small amount of deposited metal because of a small sectional area of the groove and this improves welding efficiency. The amount of deposited metal can be easily increased by the multiple-electrode welding and welding efficiency is markedly enhanced. In addition, high-temp. cracking is effectively prevented by so setting the distance between the electrodes that the heat input by the 2nd electrode is applied before the molten metal formed by the 1st electrodes solidifies sufficiently.
COPYRIGHT: (C)1981,JPO&Japio
JP4845280A 1980-04-11 1980-04-11 Welding method of square joint Pending JPS56144864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4845280A JPS56144864A (en) 1980-04-11 1980-04-11 Welding method of square joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4845280A JPS56144864A (en) 1980-04-11 1980-04-11 Welding method of square joint

Publications (1)

Publication Number Publication Date
JPS56144864A true JPS56144864A (en) 1981-11-11

Family

ID=12803734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4845280A Pending JPS56144864A (en) 1980-04-11 1980-04-11 Welding method of square joint

Country Status (1)

Country Link
JP (1) JPS56144864A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008261502A (en) * 2008-07-18 2008-10-30 Kawasaki Precision Machinery Ltd Seat block and valve device
US8752807B2 (en) 2005-03-10 2014-06-17 Kawasaki Jukogyo Kabushiki Kaisha Seat block and valve device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8752807B2 (en) 2005-03-10 2014-06-17 Kawasaki Jukogyo Kabushiki Kaisha Seat block and valve device
JP2008261502A (en) * 2008-07-18 2008-10-30 Kawasaki Precision Machinery Ltd Seat block and valve device

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