Spray transfer self-shielded tubular composite hard surfacing electrode

Abstract From the Canadian patent

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 attractive 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.