Process and welding rod for the welding of malleable cast iron

A process for the electric arc welding of cast iron containing, by weight, about 2.0 to about 2.6 percent carbon, about 1.1 to about 1.6 percent silicon, about 0.2 to about 1.0 percent manganese, about 0.18 to about 0.40 percent sulphur, about 0.0 to about 0.18 percent phosphorus, with the balance being iron plus incidental impurities which comprises:

• electrically applying to the cast iron to be welded, at welding temperatures, a welding material obtained by simultaneously melting a first and second welding rod;
• said first welding rod containing, by weight, about 0.085 to about 0.095 percent carbon, about 0.0285 to about 0.0315 percent chromium, about 0.0095 to about 0.0105 percent nickel, about 0.0095 to about 0.0105 percent molybdenum, about 0.618 to about 0.672 percent manganese, about 0.01615 to about 0.01785 percent sulphur, about 0.01805 to about 0.01995 percent phosphorus, about 2.50 percent silicon, with the balance being iron plus incidental impurities, said first welding rod being provided with a low hydrogen fluxing material;
• said second welding rod containing, by weight, from about 1.40 to about 2.20 percent carbon, about 0.04 percent chromium, from about 0.60 to about 1.00 percent nickel, from about 0.10 percent molybdenum, from about 0.90 to 1.00 percent manganese, about 0.05 percent sulphur, about 0.20 percent phosphorus, about 2.75 percent silicon, with the balance being iron plus incidental impurities.