JPS5636384A - Welding method of spheroidal graphite cast iron - Google Patents
Welding method of spheroidal graphite cast ironInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4965348A (en) * | 1972-10-27 | 1974-06-25 |
-
1980
- 1980-07-17 JP JP9841280A patent/JPS5636384A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4965348A (en) * | 1972-10-27 | 1974-06-25 |
Cited By (2)
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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