| 摘要 |
In connection with plasma tap hole welding, in which a plasma jet (7) directed towards a workpiece (8) to be welded is generated by means of a welding current applied onto an electrode (2) and a plasma gas, the plasma jet at least partly penetrating through the workpiece (9), wherein at least one electrical conductor (10, 50, 60, 61) is arranged at the exit side (8″) of the plasma jet (7), a penetration current (I2′) being measured via the electrical conductor (10, 50, 60, 61), it is suggested that the penetration current (I2) is actively modified during the welding process.
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