De-agglomeration rate of silicate bonded sand cores during core removal

Cast-in cores generally exhibited higher de-agglomeration rates compared to non-cast-in reference cores, which confirmed a deteriorating influence of a casting process on the sand core. Increased de-agglomeration rates and more disintegrated core lumps were observed for the samples with longer thermal exposure. Avoiding ambient humidity resulted in a significantly increased de-agglomeration rate compared to openly stored samples.