| 摘要 |
The invention relates to a shielding gas arc welding method for non-ferrous materials, in particular aluminium materials and aluminium alloys, for example AlSi, which method comprises the continuous supply, during welding operation, of a shielding gas containing argon and/or helium to the weld spot (welding point) adjacent to the electrode. According to the invention, a shielding gas is proposed which in addition to argon and/or helium comprises a carbon dioxide fraction or an oxygen fraction or a fraction of a mixture of these gases of from 0.01 to 0.7 % by volume, preferably from 0.01 to 0.1 % by volume (from 100 to 7000 or 1000 ppm, respectively). |
