Inorganic cores are increasingly used in gravity and low-pressure processes as they do not produce gas in the casting. They are also breathable and this allows the air in the mould to come out during the casting process. These two characteristics must be preserved. However, you must also pay special attention to reducing sintering effects.
In this regard, Altea has designed a specific powder that, applied electrostatically to the cores using the DRY LUB SYSTEM, maintains the characteristics of the cores. This way, it prevents alloy penetration and improves earthwork, while leaving the surfaces cleaner and smoother. The benefits are particularly visible in narrow cavities, which require meticulous and very expensive cleaning operations (specific steps for oil and water in vehicle engines, turbine parts, etc.) to ensure the absence of residues when the piece is complete.
The inorganic core coating process is the result of extensive research, which involved different companies to manufacture parts of the vehicle chassis with walls 2.5 mm thick. As it often happens, it has found its ideal development in the production of vehicle engine blocks.