Vacuum metallurgy involves the design and supply of systems and processes for treating metals in liquid form – particularly vacuum systems for the melting, remelting and casting of metals and alloys. Vacuum induction melting (VIM) is one of the most used processes in secondary metallurgy applied for refining treatment in the liquid state and adjustment of chemical composition and temperature. VIM is indispensable in the manufacture of special alloys, which must be melted under vacuum or in an inert gas atmosphere because of their reactivity with atmospheric oxygen. VIM furnaces find potential in aviation industry, high temperature alloys (superalloys), electronic application, and special steels.