INERT ATMOSPHERE FOR LIGHT METAL ALLOYS MELTING SYSTEMS AND METHOD AND SYSTEM FOR MELTING SAID ALLOYS WITH THE USE OF SAID INERT ATMOSPHERE

摘要

An inert atmosphere for protecting, stabilising and making inert melt baths in systems for melting light metal alloys, containing pentafluoroethane C2HF5, alone or in a mixture with other gases is disclosed. Compared with the solutions of the prior art, the inert atmosphere of the invention offers the advantage of drastically reducing the environmental impact of the melting process, though increasing the inertisation of the free surface of the molten metal and reducing the amount of dross produced by the melting.