| 摘要 |
A method of metal inert-gas welding is proposed, a method in which a welding filler (1) is fed to a welding torch (10) and a welding current of a welding current source (30) is applied via a welding current connection (5), whereby an arc (7) is formed and, in a welding region, material of the welding filler (1) is transferred to a workpiece (20) consisting at least in the welding region of an alloyed high-grade steel. By means of the welding torch (10), an inert gas that includes a content of 0.5 to 3.0 percent by volume of at least one oxidizing component and a content of 0.1 to below 0.5 percent by volume of hydrogen is fed to the welding region. A method of reducing the content of nickel oxides and chromium (VI) compounds in welding fumes of such a welding method, a corresponding inert gas and the use of a gas mixture as an inert gas are likewise the subject of the present invention. |
