Welding process

Details Welding process Welding process

B - Operations, Transporting

23

K

327/71

B23K 9/10 (2006.01) B23K 9/00 (2006.01) B23K 9/23 (2006.01) B23K 35/30 (2006.01)

Patent

CA 1133992

ABSTRACT OF THE DISCLOSURE This invention relates to a welding process using an eutectic alloy wire suitable for welding a super low-temperature steel such as 9% nickel steel. It is characterized in that, in welding a base metal comprising 3.5% - 9.5% nickel by weight, less than 100 ppm oxygen and less than 100 ppm nitrogen through the use of a welding wire comprising 8 - 15% nickel by weight, 0.1 - 0.8% manganese by weight less than 0.15% silicon by weight, less than 0.1% carbon by weight, less than 0.1% aluminum by weight, less than 0.1% titanium, less than 0.0006% boron by weight, less then 100 ppm oxygen and less than 100 ppm nitrogen, the sum of the oxygen content of the wire and the double oxygen content of the base metal is less than 200 ppm and the sum of the nitrogen content of the wire and the double nitrogen content of the base metal is less than 200 ppm.

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