JPS5636384A - Welding method of spheroidal graphite cast iron - Google Patents

Welding method of spheroidal graphite cast iron

Info

Publication number
JPS5636384A
JPS5636384A JP9841280A JP9841280A JPS5636384A JP S5636384 A JPS5636384 A JP S5636384A JP 9841280 A JP9841280 A JP 9841280A JP 9841280 A JP9841280 A JP 9841280A JP S5636384 A JPS5636384 A JP S5636384A
Authority
JP
Japan
Prior art keywords
welding
cast iron
spheroidal graphite
weld zone
graphite cast
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
JP9841280A
Other languages
Japanese (ja)
Inventor
Toshiyuki Ashida
Mitsutami Nomiyama
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.)
Kurimoto Ltd
Kurimoto Iron Works Ltd
Original Assignee
Kurimoto Ltd
Kurimoto Iron 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 Kurimoto Ltd, Kurimoto Iron Works Ltd filed Critical Kurimoto Ltd
Priority to JP9841280A priority Critical patent/JPS5636384A/en
Publication of JPS5636384A publication Critical patent/JPS5636384A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arc Welding In General (AREA)

Abstract

PURPOSE: To enable perfect welding to be performed even in spheroidal graphite casting by making the cooling rate of the weld zone in welding process less than predetermined value and performing root-pass welding through plasma keyhole welding then performing the 2nd-pass welding by using the spheroidal graphite cast iron made welding material comprising the specific components.
CONSTITUTION: Root-pass welding is performed through plasma keyhole welding by determining material temperature in such a manner that the maximum cooling rate of the weld zone of spheroidal graphite cast iron material and near the same be- comes less than the upper threshold cooling rate of the continuous cooling transformation curve determined by the composition of this cast iron material, that is, while preventing the cracking of the weld zone. Thence, the 2nd-pass welding by gas welding etc. is performed by using eutectic welding material in the recesses produced in the surface of the weld zone by this root-pass welding. An electrode made of spheroidal graphite cast iron comprising 2W4wt% C, 1.5W5wt% Si, 0.02W 0.20wt% Ca or/and Mg and Fe for the remainder is used for this eutectic welding material.
COPYRIGHT: (C)1981,JPO&Japio
JP9841280A 1980-07-17 1980-07-17 Welding method of spheroidal graphite cast iron Pending JPS5636384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9841280A JPS5636384A (en) 1980-07-17 1980-07-17 Welding method of spheroidal graphite cast iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9841280A JPS5636384A (en) 1980-07-17 1980-07-17 Welding method of spheroidal graphite cast iron

Publications (1)

Publication Number Publication Date
JPS5636384A true JPS5636384A (en) 1981-04-09

Family

ID=14219105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9841280A Pending JPS5636384A (en) 1980-07-17 1980-07-17 Welding method of spheroidal graphite cast iron

Country Status (1)

Country Link
JP (1) JPS5636384A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009061019A (en) * 2007-09-05 2009-03-26 Sophia Co Ltd Game machine
JP2011177786A (en) * 2010-02-03 2011-09-15 Hinode Ltd Welding rod

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965348A (en) * 1972-10-27 1974-06-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965348A (en) * 1972-10-27 1974-06-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009061019A (en) * 2007-09-05 2009-03-26 Sophia Co Ltd Game machine
JP2011177786A (en) * 2010-02-03 2011-09-15 Hinode Ltd Welding rod

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