Patent ID: 8445808

Claim:
A method for arc welding with a consumable electrode under a protective gas, wherein the protective gas is a mixture comprising at least helium and an active gas as well as a further inert gas, wherein a proportion of the active gas in the protective gas is determined and adjusted depending on a silicon content of a welding wire, wherein an upper limit of the proportion of the active gas is defined by an upper interpolation line (Max_AG) and the a lower limit of the proportion of the active gas is defined by a lower interpolation line (Min_AG), each comprising at least the data points (P 1 -P 3 , P 4 -P 6 ) indicated in the Table below: Max_AG Min_AG P1 P2 P3 P4 P5 P6 w_Si [%] 0.1 0.4 1.2 0.05 0.2 0.7 v_AG [%] 10 5 1.5 3 1 0.5, with w_Si being the proportion of the silicon in relation to the a total mass of the material of the welding wire in mass % and v_AG being the proportion of the active gas in the total volume of the protective gas in volume %.