Graphite flotation in castings can significantly impact both the mechanical properties and the appearance of the final product. During the cooling process, graphite balls precipitate from the hypereutectic iron liquid. These graphite balls tend to float and accumulate in the uppermost parts of the casting, particularly around the riser, which can compromise the casting’s overall quality.
To address this issue, it’s crucial to control the composition and temperature of the iron liquid during the casting process. Ensuring the uniform distribution of graphite throughout the liquid can help prevent unwanted flotation and improve the final casting’s integrity.
