Gas dosing module used for introducing a gas into a non-ferrous metal melt, especially an aluminum melt comprises a control block and a controller with a nozzle having a fitting with a peripheral outer edge and a recess

摘要

Gas dosing module comprises a control block for establishing a gas through-flow; and a controller for automatically regulating the gas through-flow and having a nozzle with an adjusting part arranged so that it can automatically regulate a constant gas flow independently from the gas pressure. The nozzle has a fitting having a peripheral outer edge (30) and a recess (34) between the outer edge and an inner edge. Preferred Features: The recess has several regions of different depths, the maximum depth being less than 2 mm. The adjusting part of the controller is a collision plate arranged as a moving wall between two chambers of the controller.