| 摘要 |
PURPOSE:To analyze directly the components of molten metal on site simply and rapidly by controlling the gap between a molten metal surface and a counter electrode to a prescribed size by an ascending and descending controller and introducing fine particles evaporated by the spark discharge between the both to an analyzer. CONSTITUTION:The gap between the counter electrode 8 in a probe 1 and the molten metal surface is controlled to 5mm.+ or -1mm. through the ascending and descending position controller 20 interlocked with a bath level gauge 38. Gaseous Ar is blown in, the probe 1 is descended, the spark discharge is performed between the electrode 8 and a sample electrode 17, the fine particles evaporated and generated are sent to a plasma torch 29 together with gaseous Ar, excited and emitted and the analysis is performed. Thereby, the content of the molten metal components can be analyzed on site directly, simply and rapidly without sampling. |
