Spray transfer self-shielded tubular composite hard...

Details Spray transfer self-shielded tubular composite hard... Spray transfer self-shielded tubular composite hard...

C - Chemistry, Metallurgy

22

C

75/138

C22C 38/18 (2006.01) B23K 35/04 (2006.01) B23K 35/24 (2006.01)

Patent

CA 1270666

71611-2 ABSTRACT OF THE DISCLOSURE Addition of prescribed amounts of alloyed forms of at least one of magnesium, calcium, strontium and barium, preferably calcium, to the core of a tubular composite self-shielded arc welding electrode balanced to produce a hard surfacing weld deposit results in attrac- tive smooth spray transfer operation. With electrodes producing deposits containing titanium carbide, the addition also improves the weld metal fluidity to a significant degree. Preferably, small quantities of unalloyed aluminum and magnesium are also added to the core for their beneficial effect in minimizing or eliminating weld metal porosity.

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