JPS5717386A - Production of welded joint in hydraulic turbine casing - Google Patents

Production of welded joint in hydraulic turbine casing

Info

Publication number
JPS5717386A
JPS5717386A JP9178080A JP9178080A JPS5717386A JP S5717386 A JPS5717386 A JP S5717386A JP 9178080 A JP9178080 A JP 9178080A JP 9178080 A JP9178080 A JP 9178080A JP S5717386 A JPS5717386 A JP S5717386A
Authority
JP
Japan
Prior art keywords
base metals
weld
tensile strength
affected zone
heat affected
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
JP9178080A
Other languages
Japanese (ja)
Inventor
Toshimi Matsumoto
Hiroshi Sato
Tsutomu Konuma
Fumio Hataya
Seishin Kirihara
Mutsuo Suzuki
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 JP9178080A priority Critical patent/JPS5717386A/en
Publication of JPS5717386A publication Critical patent/JPS5717386A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To produce a titled joint which breaks at base metals without breaking at weld metal by using a material of which the tensile strength of deposited metal is lower by a specific rate than that of base metals for the base metals of which the hardness in weld heat affected zone is higher than that of blank material parts.
CONSTITUTION: A low alloy steel plate of about 60W70kg/mm2 tensile strength is desirable as a material of which the weld heat affected zone exhibits hardness higher than that of blank material parts despite the receipt of tempering effect accompanied with multilayer welding. In the case in which the heat affected zone has hardness higher than that of the blank material parts, the plastic restraining phenomenon occuring in weld metal during acting of the tensile force in the direction perpendicular to the weld line is accelerated effectively by the adjacency of the heat affected zone harder than the blank material parts of base metals to the weld metal. Hence, althrough this depends upon the tensile strength of the deposited metal as well, the joint will break at the base metals without breaking at the weld metal. However, the use of a welding material of which the tensile strength of deposited metal is ≥82% that of base metals and is smaller than that of base metals in the state that the reinforcement of weld is left is a condition.
COPYRIGHT: (C)1982,JPO&Japio
JP9178080A 1980-07-07 1980-07-07 Production of welded joint in hydraulic turbine casing Pending JPS5717386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9178080A JPS5717386A (en) 1980-07-07 1980-07-07 Production of welded joint in hydraulic turbine casing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9178080A JPS5717386A (en) 1980-07-07 1980-07-07 Production of welded joint in hydraulic turbine casing

Publications (1)

Publication Number Publication Date
JPS5717386A true JPS5717386A (en) 1982-01-29

Family

ID=14036098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9178080A Pending JPS5717386A (en) 1980-07-07 1980-07-07 Production of welded joint in hydraulic turbine casing

Country Status (1)

Country Link
JP (1) JPS5717386A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018176231A (en) * 2017-04-14 2018-11-15 新日鐵住金株式会社 Weld joint and method for manufacturing weld joint

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5436584A (en) * 1977-08-26 1979-03-17 Hitachi Ltd Resin mold coil for electric insturument use
JPS54133445A (en) * 1978-04-07 1979-10-17 Hitachi Ltd Arc welding method for high tension steel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5436584A (en) * 1977-08-26 1979-03-17 Hitachi Ltd Resin mold coil for electric insturument use
JPS54133445A (en) * 1978-04-07 1979-10-17 Hitachi Ltd Arc welding method for high tension steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018176231A (en) * 2017-04-14 2018-11-15 新日鐵住金株式会社 Weld joint and method for manufacturing weld joint

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